Mercurial > hg > graal-jvmci-8
annotate src/cpu/ppc/vm/interp_masm_ppc_64.cpp @ 23627:47cd96b2510f
8148487: PPC64: Better byte behavior
Reviewed-by: goetz, mdoerr
| author | simonis |
|---|---|
| date | Wed, 27 Jan 2016 15:01:46 +0100 |
| parents | c5e86c5cd22e |
| children |
| rev | line source |
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1 /* |
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2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. |
| 17804 | 3 * Copyright 2012, 2014 SAP AG. All rights reserved. |
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4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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5 * |
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6 * This code is free software; you can redistribute it and/or modify it |
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7 * under the terms of the GNU General Public License version 2 only, as |
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8 * published by the Free Software Foundation. |
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9 * |
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10 * This code is distributed in the hope that it will be useful, but WITHOUT |
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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13 * version 2 for more details (a copy is included in the LICENSE file that |
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14 * accompanied this code). |
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15 * |
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16 * You should have received a copy of the GNU General Public License version |
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17 * 2 along with this work; if not, write to the Free Software Foundation, |
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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19 * |
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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21 * or visit www.oracle.com if you need additional information or have any |
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22 * questions. |
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23 * |
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24 */ |
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25 |
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26 |
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27 #include "precompiled.hpp" |
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28 #include "asm/macroAssembler.inline.hpp" |
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29 #include "interp_masm_ppc_64.hpp" |
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30 #include "interpreter/interpreterRuntime.hpp" |
| 17804 | 31 #include "prims/jvmtiThreadState.hpp" |
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32 |
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33 #ifdef PRODUCT |
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34 #define BLOCK_COMMENT(str) // nothing |
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35 #else |
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36 #define BLOCK_COMMENT(str) block_comment(str) |
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37 #endif |
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38 |
| 14445 | 39 void InterpreterMacroAssembler::null_check_throw(Register a, int offset, Register temp_reg) { |
| 40 #ifdef CC_INTERP | |
| 41 address exception_entry = StubRoutines::throw_NullPointerException_at_call_entry(); | |
| 42 #else | |
| 43 address exception_entry = Interpreter::throw_NullPointerException_entry(); | |
| 44 #endif | |
| 45 MacroAssembler::null_check_throw(a, offset, temp_reg, exception_entry); | |
| 46 } | |
| 47 | |
| 17804 | 48 void InterpreterMacroAssembler::branch_to_entry(address entry, Register Rscratch) { |
| 49 assert(entry, "Entry must have been generated by now"); | |
| 50 if (is_within_range_of_b(entry, pc())) { | |
| 51 b(entry); | |
| 52 } else { | |
| 53 load_const_optimized(Rscratch, entry, R0); | |
| 54 mtctr(Rscratch); | |
| 55 bctr(); | |
| 56 } | |
| 57 } | |
| 58 | |
| 59 #ifndef CC_INTERP | |
| 60 | |
| 61 void InterpreterMacroAssembler::dispatch_next(TosState state, int bcp_incr) { | |
| 62 Register bytecode = R12_scratch2; | |
| 63 if (bcp_incr != 0) { | |
| 64 lbzu(bytecode, bcp_incr, R14_bcp); | |
| 65 } else { | |
| 66 lbz(bytecode, 0, R14_bcp); | |
| 67 } | |
| 68 | |
| 69 dispatch_Lbyte_code(state, bytecode, Interpreter::dispatch_table(state)); | |
| 70 } | |
| 71 | |
| 72 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { | |
| 73 // Load current bytecode. | |
| 74 Register bytecode = R12_scratch2; | |
| 75 lbz(bytecode, 0, R14_bcp); | |
| 76 dispatch_Lbyte_code(state, bytecode, table); | |
| 77 } | |
| 78 | |
| 79 // Dispatch code executed in the prolog of a bytecode which does not do it's | |
| 80 // own dispatch. The dispatch address is computed and placed in R24_dispatch_addr. | |
| 81 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int bcp_incr) { | |
| 82 Register bytecode = R12_scratch2; | |
| 83 lbz(bytecode, bcp_incr, R14_bcp); | |
| 84 | |
| 85 load_dispatch_table(R24_dispatch_addr, Interpreter::dispatch_table(state)); | |
| 86 | |
| 87 sldi(bytecode, bytecode, LogBytesPerWord); | |
| 88 ldx(R24_dispatch_addr, R24_dispatch_addr, bytecode); | |
| 89 } | |
| 90 | |
| 91 // Dispatch code executed in the epilog of a bytecode which does not do it's | |
| 92 // own dispatch. The dispatch address in R24_dispatch_addr is used for the | |
| 93 // dispatch. | |
| 94 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int bcp_incr) { | |
| 95 mtctr(R24_dispatch_addr); | |
| 96 addi(R14_bcp, R14_bcp, bcp_incr); | |
| 97 bctr(); | |
| 98 } | |
| 99 | |
| 100 void InterpreterMacroAssembler::check_and_handle_popframe(Register scratch_reg) { | |
| 101 assert(scratch_reg != R0, "can't use R0 as scratch_reg here"); | |
| 102 if (JvmtiExport::can_pop_frame()) { | |
| 103 Label L; | |
| 104 | |
| 105 // Check the "pending popframe condition" flag in the current thread. | |
| 106 lwz(scratch_reg, in_bytes(JavaThread::popframe_condition_offset()), R16_thread); | |
| 107 | |
| 108 // Initiate popframe handling only if it is not already being | |
| 109 // processed. If the flag has the popframe_processing bit set, it | |
| 110 // means that this code is called *during* popframe handling - we | |
| 111 // don't want to reenter. | |
| 112 andi_(R0, scratch_reg, JavaThread::popframe_pending_bit); | |
| 113 beq(CCR0, L); | |
| 114 | |
| 115 andi_(R0, scratch_reg, JavaThread::popframe_processing_bit); | |
| 116 bne(CCR0, L); | |
| 117 | |
| 118 // Call the Interpreter::remove_activation_preserving_args_entry() | |
| 119 // func to get the address of the same-named entrypoint in the | |
| 120 // generated interpreter code. | |
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121 #if defined(ABI_ELFv2) |
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122 call_c(CAST_FROM_FN_PTR(address, |
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123 Interpreter::remove_activation_preserving_args_entry), |
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124 relocInfo::none); |
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125 #else |
| 17804 | 126 call_c(CAST_FROM_FN_PTR(FunctionDescriptor*, |
| 127 Interpreter::remove_activation_preserving_args_entry), | |
| 128 relocInfo::none); | |
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129 #endif |
| 17804 | 130 |
| 131 // Jump to Interpreter::_remove_activation_preserving_args_entry. | |
| 132 mtctr(R3_RET); | |
| 133 bctr(); | |
| 134 | |
| 135 align(32, 12); | |
| 136 bind(L); | |
| 137 } | |
| 138 } | |
| 139 | |
| 140 void InterpreterMacroAssembler::check_and_handle_earlyret(Register scratch_reg) { | |
| 141 const Register Rthr_state_addr = scratch_reg; | |
| 142 if (JvmtiExport::can_force_early_return()) { | |
| 143 Label Lno_early_ret; | |
| 144 ld(Rthr_state_addr, in_bytes(JavaThread::jvmti_thread_state_offset()), R16_thread); | |
| 145 cmpdi(CCR0, Rthr_state_addr, 0); | |
| 146 beq(CCR0, Lno_early_ret); | |
| 147 | |
| 148 lwz(R0, in_bytes(JvmtiThreadState::earlyret_state_offset()), Rthr_state_addr); | |
| 149 cmpwi(CCR0, R0, JvmtiThreadState::earlyret_pending); | |
| 150 bne(CCR0, Lno_early_ret); | |
| 151 | |
| 152 // Jump to Interpreter::_earlyret_entry. | |
| 153 lwz(R3_ARG1, in_bytes(JvmtiThreadState::earlyret_tos_offset()), Rthr_state_addr); | |
| 154 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry)); | |
| 155 mtlr(R3_RET); | |
| 156 blr(); | |
| 157 | |
| 158 align(32, 12); | |
| 159 bind(Lno_early_ret); | |
| 160 } | |
| 161 } | |
| 162 | |
| 163 void InterpreterMacroAssembler::load_earlyret_value(TosState state, Register Rscratch1) { | |
| 164 const Register RjvmtiState = Rscratch1; | |
| 165 const Register Rscratch2 = R0; | |
| 166 | |
| 167 ld(RjvmtiState, in_bytes(JavaThread::jvmti_thread_state_offset()), R16_thread); | |
| 168 li(Rscratch2, 0); | |
| 169 | |
| 170 switch (state) { | |
| 171 case atos: ld(R17_tos, in_bytes(JvmtiThreadState::earlyret_oop_offset()), RjvmtiState); | |
| 172 std(Rscratch2, in_bytes(JvmtiThreadState::earlyret_oop_offset()), RjvmtiState); | |
| 173 break; | |
| 174 case ltos: ld(R17_tos, in_bytes(JvmtiThreadState::earlyret_value_offset()), RjvmtiState); | |
| 175 break; | |
| 176 case btos: // fall through | |
| 23627 | 177 case ztos: // fall through |
| 17804 | 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: | |
| 23627 | 306 case ztos: |
| 17804 | 307 case ctos: |
| 308 case stos: | |
| 309 case itos: push_i(); break; | |
| 310 case ltos: push_l(); break; | |
| 311 case ftos: push_f(); break; | |
| 312 case dtos: push_d(); break; | |
| 313 case vtos: /* nothing to do */ break; | |
| 314 default : ShouldNotReachHere(); | |
| 315 } | |
| 316 } | |
| 317 | |
| 318 void InterpreterMacroAssembler::pop(TosState state) { | |
| 319 switch (state) { | |
| 320 case atos: pop_ptr(); break; | |
| 321 case btos: | |
| 23627 | 322 case ztos: |
| 17804 | 323 case ctos: |
| 324 case stos: | |
| 325 case itos: pop_i(); break; | |
| 326 case ltos: pop_l(); break; | |
| 327 case ftos: pop_f(); break; | |
| 328 case dtos: pop_d(); break; | |
| 329 case vtos: /* nothing to do */ break; | |
| 330 default : ShouldNotReachHere(); | |
| 331 } | |
| 332 verify_oop(R17_tos, state); | |
| 333 } | |
| 334 | |
| 335 void InterpreterMacroAssembler::empty_expression_stack() { | |
| 336 addi(R15_esp, R26_monitor, - Interpreter::stackElementSize); | |
| 337 } | |
| 338 | |
| 339 void InterpreterMacroAssembler::get_2_byte_integer_at_bcp(int bcp_offset, | |
| 340 Register Rdst, | |
| 341 signedOrNot is_signed) { | |
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342 #if defined(VM_LITTLE_ENDIAN) |
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343 if (bcp_offset) { |
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344 load_const_optimized(Rdst, bcp_offset); |
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345 lhbrx(Rdst, R14_bcp, Rdst); |
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346 } else { |
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347 lhbrx(Rdst, R14_bcp); |
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348 } |
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349 if (is_signed == Signed) { |
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350 extsh(Rdst, Rdst); |
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351 } |
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352 #else |
| 17804 | 353 // Read Java big endian format. |
| 354 if (is_signed == Signed) { | |
| 355 lha(Rdst, bcp_offset, R14_bcp); | |
| 356 } else { | |
| 357 lhz(Rdst, bcp_offset, R14_bcp); | |
| 358 } | |
| 359 #endif | |
| 360 } | |
| 361 | |
| 362 void InterpreterMacroAssembler::get_4_byte_integer_at_bcp(int bcp_offset, | |
| 363 Register Rdst, | |
| 364 signedOrNot is_signed) { | |
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365 #if defined(VM_LITTLE_ENDIAN) |
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366 if (bcp_offset) { |
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367 load_const_optimized(Rdst, bcp_offset); |
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368 lwbrx(Rdst, R14_bcp, Rdst); |
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369 } else { |
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370 lwbrx(Rdst, R14_bcp); |
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371 } |
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372 if (is_signed == Signed) { |
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373 extsw(Rdst, Rdst); |
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374 } |
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375 #else |
| 17804 | 376 // Read Java big endian format. |
| 377 if (bcp_offset & 3) { // Offset unaligned? | |
| 378 load_const_optimized(Rdst, bcp_offset); | |
| 379 if (is_signed == Signed) { | |
| 380 lwax(Rdst, R14_bcp, Rdst); | |
| 381 } else { | |
| 382 lwzx(Rdst, R14_bcp, Rdst); | |
| 383 } | |
| 384 } else { | |
| 385 if (is_signed == Signed) { | |
| 386 lwa(Rdst, bcp_offset, R14_bcp); | |
| 387 } else { | |
| 388 lwz(Rdst, bcp_offset, R14_bcp); | |
| 389 } | |
| 390 } | |
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391 #endif |
| 17804 | 392 } |
| 393 | |
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394 |
| 17804 | 395 // Load the constant pool cache index from the bytecode stream. |
| 396 // | |
| 397 // Kills / writes: | |
| 398 // - Rdst, Rscratch | |
| 399 void InterpreterMacroAssembler::get_cache_index_at_bcp(Register Rdst, int bcp_offset, size_t index_size) { | |
| 400 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); | |
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401 // Cache index is always in the native format, courtesy of Rewriter. |
| 17804 | 402 if (index_size == sizeof(u2)) { |
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403 lhz(Rdst, bcp_offset, R14_bcp); |
| 17804 | 404 } else if (index_size == sizeof(u4)) { |
| 405 assert(EnableInvokeDynamic, "giant index used only for JSR 292"); | |
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406 if (bcp_offset & 3) { |
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407 load_const_optimized(Rdst, bcp_offset); |
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408 lwax(Rdst, R14_bcp, Rdst); |
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409 } else { |
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410 lwa(Rdst, bcp_offset, R14_bcp); |
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411 } |
| 17804 | 412 assert(ConstantPool::decode_invokedynamic_index(~123) == 123, "else change next line"); |
| 413 nand(Rdst, Rdst, Rdst); // convert to plain index | |
| 414 } else if (index_size == sizeof(u1)) { | |
| 415 lbz(Rdst, bcp_offset, R14_bcp); | |
| 416 } else { | |
| 417 ShouldNotReachHere(); | |
| 418 } | |
| 419 // Rdst now contains cp cache index. | |
| 420 } | |
| 421 | |
| 422 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, int bcp_offset, size_t index_size) { | |
| 423 get_cache_index_at_bcp(cache, bcp_offset, index_size); | |
| 424 sldi(cache, cache, exact_log2(in_words(ConstantPoolCacheEntry::size()) * BytesPerWord)); | |
| 425 add(cache, R27_constPoolCache, cache); | |
| 426 } | |
| 427 | |
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428 // Load 4-byte signed or unsigned integer in Java format (that is, big-endian format) |
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429 // from (Rsrc)+offset. |
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430 void InterpreterMacroAssembler::get_u4(Register Rdst, Register Rsrc, int offset, |
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431 signedOrNot is_signed) { |
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432 #if defined(VM_LITTLE_ENDIAN) |
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433 if (offset) { |
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434 load_const_optimized(Rdst, offset); |
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435 lwbrx(Rdst, Rdst, Rsrc); |
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436 } else { |
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437 lwbrx(Rdst, Rsrc); |
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438 } |
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439 if (is_signed == Signed) { |
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440 extsw(Rdst, Rdst); |
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441 } |
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442 #else |
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443 if (is_signed == Signed) { |
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444 lwa(Rdst, offset, Rsrc); |
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445 } else { |
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446 lwz(Rdst, offset, Rsrc); |
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447 } |
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448 #endif |
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449 } |
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450 |
| 17804 | 451 // Load object from cpool->resolved_references(index). |
| 452 void InterpreterMacroAssembler::load_resolved_reference_at_index(Register result, Register index) { | |
| 453 assert_different_registers(result, index); | |
| 454 get_constant_pool(result); | |
| 455 | |
| 456 // Convert from field index to resolved_references() index and from | |
| 457 // word index to byte offset. Since this is a java object, it can be compressed. | |
| 458 Register tmp = index; // reuse | |
| 459 sldi(tmp, index, LogBytesPerHeapOop); | |
| 460 // Load pointer for resolved_references[] objArray. | |
| 461 ld(result, ConstantPool::resolved_references_offset_in_bytes(), result); | |
| 462 // JNIHandles::resolve(result) | |
| 463 ld(result, 0, result); | |
| 464 #ifdef ASSERT | |
| 465 Label index_ok; | |
| 466 lwa(R0, arrayOopDesc::length_offset_in_bytes(), result); | |
| 467 sldi(R0, R0, LogBytesPerHeapOop); | |
| 468 cmpd(CCR0, tmp, R0); | |
| 469 blt(CCR0, index_ok); | |
| 470 stop("resolved reference index out of bounds", 0x09256); | |
| 471 bind(index_ok); | |
| 472 #endif | |
| 473 // Add in the index. | |
| 474 add(result, tmp, result); | |
| 475 load_heap_oop(result, arrayOopDesc::base_offset_in_bytes(T_OBJECT), result); | |
| 476 } | |
| 477 | |
| 478 // Generate a subtype check: branch to ok_is_subtype if sub_klass is | |
| 479 // a subtype of super_klass. Blows registers Rsub_klass, tmp1, tmp2. | |
| 480 void InterpreterMacroAssembler::gen_subtype_check(Register Rsub_klass, Register Rsuper_klass, Register Rtmp1, | |
| 481 Register Rtmp2, Register Rtmp3, Label &ok_is_subtype) { | |
| 482 // Profile the not-null value's klass. | |
| 483 profile_typecheck(Rsub_klass, Rtmp1, Rtmp2); | |
| 484 check_klass_subtype(Rsub_klass, Rsuper_klass, Rtmp1, Rtmp2, ok_is_subtype); | |
| 485 profile_typecheck_failed(Rtmp1, Rtmp2); | |
| 486 } | |
| 487 | |
| 488 void InterpreterMacroAssembler::generate_stack_overflow_check_with_compare_and_throw(Register Rmem_frame_size, Register Rscratch1) { | |
| 489 Label done; | |
| 490 sub(Rmem_frame_size, R1_SP, Rmem_frame_size); | |
| 491 ld(Rscratch1, thread_(stack_overflow_limit)); | |
| 492 cmpld(CCR0/*is_stack_overflow*/, Rmem_frame_size, Rscratch1); | |
| 493 bgt(CCR0/*is_stack_overflow*/, done); | |
| 494 | |
| 495 // Load target address of the runtime stub. | |
| 496 assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "generated in wrong order"); | |
| 497 load_const_optimized(Rscratch1, (StubRoutines::throw_StackOverflowError_entry()), R0); | |
| 498 mtctr(Rscratch1); | |
| 499 // Restore caller_sp. | |
| 500 #ifdef ASSERT | |
| 501 ld(Rscratch1, 0, R1_SP); | |
| 502 ld(R0, 0, R21_sender_SP); | |
| 503 cmpd(CCR0, R0, Rscratch1); | |
| 504 asm_assert_eq("backlink", 0x547); | |
| 505 #endif // ASSERT | |
| 506 mr(R1_SP, R21_sender_SP); | |
| 507 bctr(); | |
| 508 | |
| 509 align(32, 12); | |
| 510 bind(done); | |
| 511 } | |
| 512 | |
| 513 // Separate these two to allow for delay slot in middle. | |
| 514 // These are used to do a test and full jump to exception-throwing code. | |
| 515 | |
| 516 // Check that index is in range for array, then shift index by index_shift, | |
| 517 // and put arrayOop + shifted_index into res. | |
| 518 // Note: res is still shy of address by array offset into object. | |
| 519 | |
| 520 void InterpreterMacroAssembler::index_check_without_pop(Register Rarray, Register Rindex, int index_shift, Register Rtmp, Register Rres) { | |
| 521 // Check that index is in range for array, then shift index by index_shift, | |
| 522 // and put arrayOop + shifted_index into res. | |
| 523 // Note: res is still shy of address by array offset into object. | |
| 524 // Kills: | |
| 525 // - Rindex | |
| 526 // Writes: | |
| 527 // - Rres: Address that corresponds to the array index if check was successful. | |
| 528 verify_oop(Rarray); | |
| 529 const Register Rlength = R0; | |
| 530 const Register RsxtIndex = Rtmp; | |
| 531 Label LisNull, LnotOOR; | |
| 532 | |
| 533 // Array nullcheck | |
| 534 if (!ImplicitNullChecks) { | |
| 535 cmpdi(CCR0, Rarray, 0); | |
| 536 beq(CCR0, LisNull); | |
| 537 } else { | |
| 538 null_check_throw(Rarray, arrayOopDesc::length_offset_in_bytes(), /*temp*/RsxtIndex); | |
| 539 } | |
| 540 | |
| 541 // Rindex might contain garbage in upper bits (remember that we don't sign extend | |
| 542 // during integer arithmetic operations). So kill them and put value into same register | |
| 543 // where ArrayIndexOutOfBounds would expect the index in. | |
| 544 rldicl(RsxtIndex, Rindex, 0, 32); // zero extend 32 bit -> 64 bit | |
| 545 | |
| 546 // Index check | |
| 547 lwz(Rlength, arrayOopDesc::length_offset_in_bytes(), Rarray); | |
| 548 cmplw(CCR0, Rindex, Rlength); | |
| 549 sldi(RsxtIndex, RsxtIndex, index_shift); | |
| 550 blt(CCR0, LnotOOR); | |
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551 // Index should be in R17_tos, array should be in R4_ARG2. |
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552 mr(R17_tos, Rindex); |
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553 mr(R4_ARG2, Rarray); |
| 17804 | 554 load_dispatch_table(Rtmp, (address*)Interpreter::_throw_ArrayIndexOutOfBoundsException_entry); |
| 555 mtctr(Rtmp); | |
| 556 bctr(); | |
| 557 | |
| 558 if (!ImplicitNullChecks) { | |
| 559 bind(LisNull); | |
| 560 load_dispatch_table(Rtmp, (address*)Interpreter::_throw_NullPointerException_entry); | |
| 561 mtctr(Rtmp); | |
| 562 bctr(); | |
| 563 } | |
| 564 | |
| 565 align(32, 16); | |
| 566 bind(LnotOOR); | |
| 567 | |
| 568 // Calc address | |
| 569 add(Rres, RsxtIndex, Rarray); | |
| 570 } | |
| 571 | |
| 572 void InterpreterMacroAssembler::index_check(Register array, Register index, int index_shift, Register tmp, Register res) { | |
| 573 // pop array | |
| 574 pop_ptr(array); | |
| 575 | |
| 576 // check array | |
| 577 index_check_without_pop(array, index, index_shift, tmp, res); | |
| 578 } | |
| 579 | |
| 580 void InterpreterMacroAssembler::get_const(Register Rdst) { | |
| 581 ld(Rdst, in_bytes(Method::const_offset()), R19_method); | |
| 582 } | |
| 583 | |
| 584 void InterpreterMacroAssembler::get_constant_pool(Register Rdst) { | |
| 585 get_const(Rdst); | |
| 586 ld(Rdst, in_bytes(ConstMethod::constants_offset()), Rdst); | |
| 587 } | |
| 588 | |
| 589 void InterpreterMacroAssembler::get_constant_pool_cache(Register Rdst) { | |
| 590 get_constant_pool(Rdst); | |
| 591 ld(Rdst, ConstantPool::cache_offset_in_bytes(), Rdst); | |
| 592 } | |
| 593 | |
| 594 void InterpreterMacroAssembler::get_cpool_and_tags(Register Rcpool, Register Rtags) { | |
| 595 get_constant_pool(Rcpool); | |
| 596 ld(Rtags, ConstantPool::tags_offset_in_bytes(), Rcpool); | |
| 597 } | |
| 598 | |
| 599 // Unlock if synchronized method. | |
| 600 // | |
| 601 // Unlock the receiver if this is a synchronized method. | |
| 602 // Unlock any Java monitors from synchronized blocks. | |
| 603 // | |
| 604 // If there are locked Java monitors | |
| 605 // If throw_monitor_exception | |
| 606 // throws IllegalMonitorStateException | |
| 607 // Else if install_monitor_exception | |
| 608 // installs IllegalMonitorStateException | |
| 609 // Else | |
| 610 // no error processing | |
| 611 void InterpreterMacroAssembler::unlock_if_synchronized_method(TosState state, | |
| 612 bool throw_monitor_exception, | |
| 613 bool install_monitor_exception) { | |
| 614 Label Lunlocked, Lno_unlock; | |
| 615 { | |
| 616 Register Rdo_not_unlock_flag = R11_scratch1; | |
| 617 Register Raccess_flags = R12_scratch2; | |
| 618 | |
| 619 // Check if synchronized method or unlocking prevented by | |
| 620 // JavaThread::do_not_unlock_if_synchronized flag. | |
| 621 lbz(Rdo_not_unlock_flag, in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()), R16_thread); | |
| 622 lwz(Raccess_flags, in_bytes(Method::access_flags_offset()), R19_method); | |
| 623 li(R0, 0); | |
| 624 stb(R0, in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()), R16_thread); // reset flag | |
| 625 | |
| 626 push(state); | |
| 627 | |
| 628 // Skip if we don't have to unlock. | |
| 629 rldicl_(R0, Raccess_flags, 64-JVM_ACC_SYNCHRONIZED_BIT, 63); // Extract bit and compare to 0. | |
| 630 beq(CCR0, Lunlocked); | |
| 631 | |
| 632 cmpwi(CCR0, Rdo_not_unlock_flag, 0); | |
| 633 bne(CCR0, Lno_unlock); | |
| 634 } | |
| 635 | |
| 636 // Unlock | |
| 637 { | |
| 638 Register Rmonitor_base = R11_scratch1; | |
| 639 | |
| 640 Label Lunlock; | |
| 641 // If it's still locked, everything is ok, unlock it. | |
| 642 ld(Rmonitor_base, 0, R1_SP); | |
| 643 addi(Rmonitor_base, Rmonitor_base, - (frame::ijava_state_size + frame::interpreter_frame_monitor_size_in_bytes())); // Monitor base | |
| 644 | |
| 645 ld(R0, BasicObjectLock::obj_offset_in_bytes(), Rmonitor_base); | |
| 646 cmpdi(CCR0, R0, 0); | |
| 647 bne(CCR0, Lunlock); | |
| 648 | |
| 649 // If it's already unlocked, throw exception. | |
| 650 if (throw_monitor_exception) { | |
| 651 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 652 should_not_reach_here(); | |
| 653 } else { | |
| 654 if (install_monitor_exception) { | |
| 655 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
| 656 b(Lunlocked); | |
| 657 } | |
| 658 } | |
| 659 | |
| 660 bind(Lunlock); | |
| 661 unlock_object(Rmonitor_base); | |
| 662 } | |
| 663 | |
| 664 // Check that all other monitors are unlocked. Throw IllegelMonitorState exception if not. | |
| 665 bind(Lunlocked); | |
| 666 { | |
| 667 Label Lexception, Lrestart; | |
| 668 Register Rcurrent_obj_addr = R11_scratch1; | |
| 669 const int delta = frame::interpreter_frame_monitor_size_in_bytes(); | |
| 670 assert((delta & LongAlignmentMask) == 0, "sizeof BasicObjectLock must be even number of doublewords"); | |
| 671 | |
| 672 bind(Lrestart); | |
| 673 // Set up search loop: Calc num of iterations. | |
| 674 { | |
| 675 Register Riterations = R12_scratch2; | |
| 676 Register Rmonitor_base = Rcurrent_obj_addr; | |
| 677 ld(Rmonitor_base, 0, R1_SP); | |
| 678 addi(Rmonitor_base, Rmonitor_base, - frame::ijava_state_size); // Monitor base | |
| 679 | |
| 680 subf_(Riterations, R26_monitor, Rmonitor_base); | |
| 681 ble(CCR0, Lno_unlock); | |
| 682 | |
| 683 addi(Rcurrent_obj_addr, Rmonitor_base, BasicObjectLock::obj_offset_in_bytes() - frame::interpreter_frame_monitor_size_in_bytes()); | |
| 684 // Check if any monitor is on stack, bail out if not | |
| 685 srdi(Riterations, Riterations, exact_log2(delta)); | |
| 686 mtctr(Riterations); | |
| 687 } | |
| 688 | |
| 689 // The search loop: Look for locked monitors. | |
| 690 { | |
| 691 const Register Rcurrent_obj = R0; | |
| 692 Label Lloop; | |
| 693 | |
| 694 ld(Rcurrent_obj, 0, Rcurrent_obj_addr); | |
| 695 addi(Rcurrent_obj_addr, Rcurrent_obj_addr, -delta); | |
| 696 bind(Lloop); | |
| 697 | |
| 698 // Check if current entry is used. | |
| 699 cmpdi(CCR0, Rcurrent_obj, 0); | |
| 700 bne(CCR0, Lexception); | |
| 701 // Preload next iteration's compare value. | |
| 702 ld(Rcurrent_obj, 0, Rcurrent_obj_addr); | |
| 703 addi(Rcurrent_obj_addr, Rcurrent_obj_addr, -delta); | |
| 704 bdnz(Lloop); | |
| 705 } | |
| 706 // Fell through: Everything's unlocked => finish. | |
| 707 b(Lno_unlock); | |
| 708 | |
| 709 // An object is still locked => need to throw exception. | |
| 710 bind(Lexception); | |
| 711 if (throw_monitor_exception) { | |
| 712 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 713 should_not_reach_here(); | |
| 714 } else { | |
| 715 // Stack unrolling. Unlock object and if requested, install illegal_monitor_exception. | |
| 716 // Unlock does not block, so don't have to worry about the frame. | |
| 717 Register Rmonitor_addr = R11_scratch1; | |
| 718 addi(Rmonitor_addr, Rcurrent_obj_addr, -BasicObjectLock::obj_offset_in_bytes() + delta); | |
| 719 unlock_object(Rmonitor_addr); | |
| 720 if (install_monitor_exception) { | |
| 721 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
| 722 } | |
| 723 b(Lrestart); | |
| 724 } | |
| 725 } | |
| 726 | |
| 727 align(32, 12); | |
| 728 bind(Lno_unlock); | |
| 729 pop(state); | |
| 730 } | |
| 731 | |
| 732 // Support function for remove_activation & Co. | |
| 733 void InterpreterMacroAssembler::merge_frames(Register Rsender_sp, Register return_pc, Register Rscratch1, Register Rscratch2) { | |
| 734 // Pop interpreter frame. | |
| 735 ld(Rscratch1, 0, R1_SP); // *SP | |
| 736 ld(Rsender_sp, _ijava_state_neg(sender_sp), Rscratch1); // top_frame_sp | |
| 737 ld(Rscratch2, 0, Rscratch1); // **SP | |
| 738 #ifdef ASSERT | |
| 739 { | |
| 740 Label Lok; | |
| 741 ld(R0, _ijava_state_neg(ijava_reserved), Rscratch1); | |
| 742 cmpdi(CCR0, R0, 0x5afe); | |
| 743 beq(CCR0, Lok); | |
| 744 stop("frame corrupted (remove activation)", 0x5afe); | |
| 745 bind(Lok); | |
| 746 } | |
| 747 #endif | |
| 748 if (return_pc!=noreg) { | |
| 749 ld(return_pc, _abi(lr), Rscratch1); // LR | |
| 750 } | |
| 751 | |
| 752 // Merge top frames. | |
| 753 subf(Rscratch1, R1_SP, Rsender_sp); // top_frame_sp - SP | |
| 754 stdux(Rscratch2, R1_SP, Rscratch1); // atomically set *(SP = top_frame_sp) = **SP | |
| 755 } | |
| 756 | |
| 23627 | 757 void InterpreterMacroAssembler::narrow(Register result) { |
| 758 Register ret_type = R11_scratch1; | |
| 759 ld(R11_scratch1, in_bytes(Method::const_offset()), R19_method); | |
| 760 lbz(ret_type, in_bytes(ConstMethod::result_type_offset()), R11_scratch1); | |
| 761 | |
| 762 Label notBool, notByte, notChar, done; | |
| 763 | |
| 764 // common case first | |
| 765 cmpwi(CCR0, ret_type, T_INT); | |
| 766 beq(CCR0, done); | |
| 767 | |
| 768 cmpwi(CCR0, ret_type, T_BOOLEAN); | |
| 769 bne(CCR0, notBool); | |
| 770 andi(result, result, 0x1); | |
| 771 b(done); | |
| 772 | |
| 773 bind(notBool); | |
| 774 cmpwi(CCR0, ret_type, T_BYTE); | |
| 775 bne(CCR0, notByte); | |
| 776 extsb(result, result); | |
| 777 b(done); | |
| 778 | |
| 779 bind(notByte); | |
| 780 cmpwi(CCR0, ret_type, T_CHAR); | |
| 781 bne(CCR0, notChar); | |
| 782 andi(result, result, 0xffff); | |
| 783 b(done); | |
| 784 | |
| 785 bind(notChar); | |
| 786 // cmpwi(CCR0, ret_type, T_SHORT); // all that's left | |
| 787 // bne(CCR0, done); | |
| 788 extsh(result, result); | |
| 789 | |
| 790 // Nothing to do for T_INT | |
| 791 bind(done); | |
| 792 } | |
| 793 | |
| 17804 | 794 // Remove activation. |
| 795 // | |
| 796 // Unlock the receiver if this is a synchronized method. | |
| 797 // Unlock any Java monitors from synchronized blocks. | |
| 798 // Remove the activation from the stack. | |
| 799 // | |
| 800 // If there are locked Java monitors | |
| 801 // If throw_monitor_exception | |
| 802 // throws IllegalMonitorStateException | |
| 803 // Else if install_monitor_exception | |
| 804 // installs IllegalMonitorStateException | |
| 805 // Else | |
| 806 // no error processing | |
| 807 void InterpreterMacroAssembler::remove_activation(TosState state, | |
| 808 bool throw_monitor_exception, | |
| 809 bool install_monitor_exception) { | |
| 810 unlock_if_synchronized_method(state, throw_monitor_exception, install_monitor_exception); | |
| 811 | |
| 812 // Save result (push state before jvmti call and pop it afterwards) and notify jvmti. | |
| 813 notify_method_exit(false, state, NotifyJVMTI, true); | |
| 814 | |
| 815 verify_oop(R17_tos, state); | |
| 816 verify_thread(); | |
| 817 | |
| 818 merge_frames(/*top_frame_sp*/ R21_sender_SP, /*return_pc*/ R0, R11_scratch1, R12_scratch2); | |
| 819 mtlr(R0); | |
| 820 } | |
| 821 | |
| 822 #endif // !CC_INTERP | |
| 823 | |
|
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824 // Lock object |
|
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825 // |
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826 // Registers alive |
|
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827 // monitor - Address of the BasicObjectLock to be used for locking, |
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828 // which must be initialized with the object to lock. |
|
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829 // object - Address of the object to be locked. |
|
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830 // |
|
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831 void InterpreterMacroAssembler::lock_object(Register monitor, Register object) { |
|
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832 if (UseHeavyMonitors) { |
|
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833 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), |
| 14445 | 834 monitor, /*check_for_exceptions=*/true CC_INTERP_ONLY(&& false)); |
|
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835 } else { |
|
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836 // template code: |
|
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837 // |
|
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838 // markOop displaced_header = obj->mark().set_unlocked(); |
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839 // monitor->lock()->set_displaced_header(displaced_header); |
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840 // if (Atomic::cmpxchg_ptr(/*ex=*/monitor, /*addr*/obj->mark_addr(), /*cmp*/displaced_header) == displaced_header) { |
|
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841 // // We stored the monitor address into the object's mark word. |
|
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842 // } else if (THREAD->is_lock_owned((address)displaced_header)) |
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843 // // Simple recursive case. |
|
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844 // monitor->lock()->set_displaced_header(NULL); |
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845 // } else { |
|
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846 // // Slow path. |
|
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847 // InterpreterRuntime::monitorenter(THREAD, monitor); |
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848 // } |
|
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849 |
|
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850 const Register displaced_header = R7_ARG5; |
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851 const Register object_mark_addr = R8_ARG6; |
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852 const Register current_header = R9_ARG7; |
|
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853 const Register tmp = R10_ARG8; |
|
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854 |
|
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855 Label done; |
| 14445 | 856 Label cas_failed, slow_case; |
|
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857 |
|
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858 assert_different_registers(displaced_header, object_mark_addr, current_header, tmp); |
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859 |
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860 // markOop displaced_header = obj->mark().set_unlocked(); |
|
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861 |
|
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862 // Load markOop from object into displaced_header. |
|
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863 ld(displaced_header, oopDesc::mark_offset_in_bytes(), object); |
|
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864 |
|
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865 if (UseBiasedLocking) { |
|
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866 biased_locking_enter(CCR0, object, displaced_header, tmp, current_header, done, &slow_case); |
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867 } |
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868 |
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869 // Set displaced_header to be (markOop of object | UNLOCK_VALUE). |
|
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870 ori(displaced_header, displaced_header, markOopDesc::unlocked_value); |
|
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871 |
|
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872 // monitor->lock()->set_displaced_header(displaced_header); |
|
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873 |
|
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874 // Initialize the box (Must happen before we update the object mark!). |
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875 std(displaced_header, BasicObjectLock::lock_offset_in_bytes() + |
| 14445 | 876 BasicLock::displaced_header_offset_in_bytes(), monitor); |
|
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877 |
|
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878 // if (Atomic::cmpxchg_ptr(/*ex=*/monitor, /*addr*/obj->mark_addr(), /*cmp*/displaced_header) == displaced_header) { |
|
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879 |
|
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880 // Store stack address of the BasicObjectLock (this is monitor) into object. |
|
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881 addi(object_mark_addr, object, oopDesc::mark_offset_in_bytes()); |
|
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882 |
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883 // Must fence, otherwise, preceding store(s) may float below cmpxchg. |
|
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884 // CmpxchgX sets CCR0 to cmpX(current, displaced). |
|
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885 fence(); // TODO: replace by MacroAssembler::MemBarRel | MacroAssembler::MemBarAcq ? |
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886 cmpxchgd(/*flag=*/CCR0, |
|
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887 /*current_value=*/current_header, |
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888 /*compare_value=*/displaced_header, /*exchange_value=*/monitor, |
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889 /*where=*/object_mark_addr, |
|
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890 MacroAssembler::MemBarRel | MacroAssembler::MemBarAcq, |
| 14445 | 891 MacroAssembler::cmpxchgx_hint_acquire_lock(), |
| 892 noreg, | |
| 893 &cas_failed); | |
|
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894 |
|
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895 // If the compare-and-exchange succeeded, then we found an unlocked |
|
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896 // object and we have now locked it. |
| 14445 | 897 b(done); |
| 898 bind(cas_failed); | |
|
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899 |
|
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900 // } else if (THREAD->is_lock_owned((address)displaced_header)) |
|
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901 // // Simple recursive case. |
|
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902 // monitor->lock()->set_displaced_header(NULL); |
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903 |
|
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904 // We did not see an unlocked object so try the fast recursive case. |
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905 |
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906 // Check if owner is self by comparing the value in the markOop of object |
|
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907 // (current_header) with the stack pointer. |
|
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908 sub(current_header, current_header, R1_SP); |
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909 |
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910 assert(os::vm_page_size() > 0xfff, "page size too small - change the constant"); |
|
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911 load_const_optimized(tmp, |
|
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912 (address) (~(os::vm_page_size()-1) | |
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913 markOopDesc::lock_mask_in_place)); |
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914 |
|
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915 and_(R0/*==0?*/, current_header, tmp); |
|
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916 // If condition is true we are done and hence we can store 0 in the displaced |
|
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917 // header indicating it is a recursive lock. |
|
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918 bne(CCR0, slow_case); |
|
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|
919 release(); |
|
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920 std(R0/*==0!*/, BasicObjectLock::lock_offset_in_bytes() + |
| 14445 | 921 BasicLock::displaced_header_offset_in_bytes(), monitor); |
|
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922 b(done); |
|
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923 |
|
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924 // } else { |
|
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925 // // Slow path. |
|
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926 // InterpreterRuntime::monitorenter(THREAD, monitor); |
|
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927 |
|
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928 // None of the above fast optimizations worked so we have to get into the |
|
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929 // slow case of monitor enter. |
|
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|
930 bind(slow_case); |
|
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931 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), |
| 14445 | 932 monitor, /*check_for_exceptions=*/true CC_INTERP_ONLY(&& false)); |
|
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933 // } |
| 17804 | 934 align(32, 12); |
|
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935 bind(done); |
|
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936 } |
|
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|
937 } |
|
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|
938 |
|
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939 // Unlocks an object. Used in monitorexit bytecode and remove_activation. |
|
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940 // |
|
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941 // Registers alive |
|
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942 // monitor - Address of the BasicObjectLock to be used for locking, |
|
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943 // which must be initialized with the object to lock. |
|
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944 // |
|
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945 // Throw IllegalMonitorException if object is not locked by current thread. |
| 14445 | 946 void InterpreterMacroAssembler::unlock_object(Register monitor, bool check_for_exceptions) { |
|
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947 if (UseHeavyMonitors) { |
|
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948 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), |
| 17804 | 949 monitor, check_for_exceptions CC_INTERP_ONLY(&& false)); |
|
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950 } else { |
|
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|
951 |
|
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|
952 // template code: |
|
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|
953 // |
|
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|
954 // if ((displaced_header = monitor->displaced_header()) == NULL) { |
| 17804 | 955 // // Recursive unlock. Mark the monitor unlocked by setting the object field to NULL. |
|
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956 // monitor->set_obj(NULL); |
|
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957 // } else if (Atomic::cmpxchg_ptr(displaced_header, obj->mark_addr(), monitor) == monitor) { |
|
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958 // // We swapped the unlocked mark in displaced_header into the object's mark word. |
|
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959 // monitor->set_obj(NULL); |
|
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|
960 // } else { |
|
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961 // // Slow path. |
|
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962 // InterpreterRuntime::monitorexit(THREAD, monitor); |
|
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963 // } |
|
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964 |
|
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965 const Register object = R7_ARG5; |
|
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966 const Register displaced_header = R8_ARG6; |
|
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967 const Register object_mark_addr = R9_ARG7; |
|
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968 const Register current_header = R10_ARG8; |
|
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969 |
| 14445 | 970 Label free_slot; |
|
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971 Label slow_case; |
|
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|
972 |
|
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|
973 assert_different_registers(object, displaced_header, object_mark_addr, current_header); |
|
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974 |
|
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|
975 if (UseBiasedLocking) { |
|
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976 // The object address from the monitor is in object. |
|
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977 ld(object, BasicObjectLock::obj_offset_in_bytes(), monitor); |
|
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978 assert(oopDesc::mark_offset_in_bytes() == 0, "offset of _mark is not 0"); |
| 14445 | 979 biased_locking_exit(CCR0, object, displaced_header, free_slot); |
|
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980 } |
|
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981 |
|
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982 // Test first if we are in the fast recursive case. |
|
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983 ld(displaced_header, BasicObjectLock::lock_offset_in_bytes() + |
|
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984 BasicLock::displaced_header_offset_in_bytes(), monitor); |
|
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|
985 |
|
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986 // If the displaced header is zero, we have a recursive unlock. |
|
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987 cmpdi(CCR0, displaced_header, 0); |
| 14445 | 988 beq(CCR0, free_slot); // recursive unlock |
|
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989 |
|
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990 // } else if (Atomic::cmpxchg_ptr(displaced_header, obj->mark_addr(), monitor) == monitor) { |
|
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|
991 // // We swapped the unlocked mark in displaced_header into the object's mark word. |
|
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992 // monitor->set_obj(NULL); |
|
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|
993 |
|
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|
994 // If we still have a lightweight lock, unlock the object and be done. |
|
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|
995 |
|
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|
996 // The object address from the monitor is in object. |
| 17804 | 997 if (!UseBiasedLocking) { ld(object, BasicObjectLock::obj_offset_in_bytes(), monitor); } |
|
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998 addi(object_mark_addr, object, oopDesc::mark_offset_in_bytes()); |
|
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|
999 |
|
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|
1000 // We have the displaced header in displaced_header. If the lock is still |
|
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1001 // lightweight, it will contain the monitor address and we'll store the |
|
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|
1002 // displaced header back into the object's mark word. |
|
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1003 // CmpxchgX sets CCR0 to cmpX(current, monitor). |
|
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1004 cmpxchgd(/*flag=*/CCR0, |
|
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|
1005 /*current_value=*/current_header, |
|
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1006 /*compare_value=*/monitor, /*exchange_value=*/displaced_header, |
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1007 /*where=*/object_mark_addr, |
| 14445 | 1008 MacroAssembler::MemBarRel, |
| 1009 MacroAssembler::cmpxchgx_hint_release_lock(), | |
| 1010 noreg, | |
| 1011 &slow_case); | |
| 1012 b(free_slot); | |
|
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1013 |
|
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1014 // } else { |
|
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|
1015 // // Slow path. |
|
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1016 // InterpreterRuntime::monitorexit(THREAD, monitor); |
|
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1017 |
|
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1018 // The lock has been converted into a heavy lock and hence |
|
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1019 // we need to get into the slow case. |
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1020 bind(slow_case); |
|
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1021 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), |
| 14445 | 1022 monitor, check_for_exceptions CC_INTERP_ONLY(&& false)); |
|
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1023 // } |
|
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1024 |
| 14445 | 1025 Label done; |
| 1026 b(done); // Monitor register may be overwritten! Runtime has already freed the slot. | |
| 1027 | |
| 1028 // Exchange worked, do monitor->set_obj(NULL); | |
| 1029 align(32, 12); | |
| 1030 bind(free_slot); | |
| 1031 li(R0, 0); | |
| 1032 std(R0, BasicObjectLock::obj_offset_in_bytes(), monitor); | |
|
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1033 bind(done); |
|
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|
1034 } |
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|
1035 } |
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1036 |
| 17804 | 1037 #ifndef CC_INTERP |
| 1038 | |
| 1039 // Load compiled (i2c) or interpreter entry when calling from interpreted and | |
| 1040 // do the call. Centralized so that all interpreter calls will do the same actions. | |
| 1041 // If jvmti single stepping is on for a thread we must not call compiled code. | |
| 1042 // | |
| 1043 // Input: | |
| 1044 // - Rtarget_method: method to call | |
| 1045 // - Rret_addr: return address | |
| 1046 // - 2 scratch regs | |
| 1047 // | |
| 1048 void InterpreterMacroAssembler::call_from_interpreter(Register Rtarget_method, Register Rret_addr, Register Rscratch1, Register Rscratch2) { | |
| 1049 assert_different_registers(Rscratch1, Rscratch2, Rtarget_method, Rret_addr); | |
| 1050 // Assume we want to go compiled if available. | |
| 1051 const Register Rtarget_addr = Rscratch1; | |
| 1052 const Register Rinterp_only = Rscratch2; | |
| 1053 | |
| 1054 ld(Rtarget_addr, in_bytes(Method::from_interpreted_offset()), Rtarget_method); | |
| 1055 | |
| 1056 if (JvmtiExport::can_post_interpreter_events()) { | |
| 1057 lwz(Rinterp_only, in_bytes(JavaThread::interp_only_mode_offset()), R16_thread); | |
| 1058 | |
| 1059 // JVMTI events, such as single-stepping, are implemented partly by avoiding running | |
| 1060 // compiled code in threads for which the event is enabled. Check here for | |
| 1061 // interp_only_mode if these events CAN be enabled. | |
| 1062 Label done; | |
| 1063 verify_thread(); | |
| 1064 cmpwi(CCR0, Rinterp_only, 0); | |
| 1065 beq(CCR0, done); | |
| 1066 ld(Rtarget_addr, in_bytes(Method::interpreter_entry_offset()), Rtarget_method); | |
| 1067 align(32, 12); | |
| 1068 bind(done); | |
| 1069 } | |
| 1070 | |
| 1071 #ifdef ASSERT | |
| 1072 { | |
| 1073 Label Lok; | |
| 1074 cmpdi(CCR0, Rtarget_addr, 0); | |
| 1075 bne(CCR0, Lok); | |
| 1076 stop("null entry point"); | |
| 1077 bind(Lok); | |
| 1078 } | |
| 1079 #endif // ASSERT | |
| 1080 | |
| 1081 mr(R21_sender_SP, R1_SP); | |
| 1082 | |
| 1083 // Calc a precise SP for the call. The SP value we calculated in | |
| 1084 // generate_fixed_frame() is based on the max_stack() value, so we would waste stack space | |
| 1085 // if esp is not max. Also, the i2c adapter extends the stack space without restoring | |
| 1086 // our pre-calced value, so repeating calls via i2c would result in stack overflow. | |
| 1087 // Since esp already points to an empty slot, we just have to sub 1 additional slot | |
| 1088 // to meet the abi scratch requirements. | |
| 1089 // The max_stack pointer will get restored by means of the GR_Lmax_stack local in | |
| 1090 // the return entry of the interpreter. | |
| 1091 addi(Rscratch2, R15_esp, Interpreter::stackElementSize - frame::abi_reg_args_size); | |
| 1092 clrrdi(Rscratch2, Rscratch2, exact_log2(frame::alignment_in_bytes)); // round towards smaller address | |
| 1093 resize_frame_absolute(Rscratch2, Rscratch2, R0); | |
| 1094 | |
| 1095 mr_if_needed(R19_method, Rtarget_method); | |
| 1096 mtctr(Rtarget_addr); | |
| 1097 mtlr(Rret_addr); | |
| 1098 | |
| 1099 save_interpreter_state(Rscratch2); | |
| 1100 #ifdef ASSERT | |
| 1101 ld(Rscratch1, _ijava_state_neg(top_frame_sp), Rscratch2); // Rscratch2 contains fp | |
| 1102 cmpd(CCR0, R21_sender_SP, Rscratch1); | |
| 1103 asm_assert_eq("top_frame_sp incorrect", 0x951); | |
| 1104 #endif | |
| 1105 | |
| 1106 bctr(); | |
| 1107 } | |
| 1108 | |
| 1109 // Set the method data pointer for the current bcp. | |
| 1110 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() { | |
| 1111 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1112 Label get_continue; | |
| 1113 ld(R28_mdx, in_bytes(Method::method_data_offset()), R19_method); | |
| 1114 test_method_data_pointer(get_continue); | |
| 1115 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), R19_method, R14_bcp); | |
| 1116 | |
| 1117 addi(R28_mdx, R28_mdx, in_bytes(MethodData::data_offset())); | |
| 1118 add(R28_mdx, R28_mdx, R3_RET); | |
| 1119 bind(get_continue); | |
| 1120 } | |
| 1121 | |
| 1122 // Test ImethodDataPtr. If it is null, continue at the specified label. | |
| 1123 void InterpreterMacroAssembler::test_method_data_pointer(Label& zero_continue) { | |
| 1124 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1125 cmpdi(CCR0, R28_mdx, 0); | |
| 1126 beq(CCR0, zero_continue); | |
| 1127 } | |
| 1128 | |
| 1129 void InterpreterMacroAssembler::verify_method_data_pointer() { | |
| 1130 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1131 #ifdef ASSERT | |
| 1132 Label verify_continue; | |
| 1133 test_method_data_pointer(verify_continue); | |
| 1134 | |
| 1135 // If the mdp is valid, it will point to a DataLayout header which is | |
| 1136 // consistent with the bcp. The converse is highly probable also. | |
| 1137 lhz(R11_scratch1, in_bytes(DataLayout::bci_offset()), R28_mdx); | |
| 1138 ld(R12_scratch2, in_bytes(Method::const_offset()), R19_method); | |
| 1139 addi(R11_scratch1, R11_scratch1, in_bytes(ConstMethod::codes_offset())); | |
| 1140 add(R11_scratch1, R12_scratch2, R12_scratch2); | |
| 1141 cmpd(CCR0, R11_scratch1, R14_bcp); | |
| 1142 beq(CCR0, verify_continue); | |
| 1143 | |
| 1144 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp ), R19_method, R14_bcp, R28_mdx); | |
| 1145 | |
| 1146 bind(verify_continue); | |
| 1147 #endif | |
| 1148 } | |
| 1149 | |
| 1150 void InterpreterMacroAssembler::test_invocation_counter_for_mdp(Register invocation_count, | |
| 1151 Register Rscratch, | |
| 1152 Label &profile_continue) { | |
| 1153 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1154 // Control will flow to "profile_continue" if the counter is less than the | |
| 1155 // limit or if we call profile_method(). | |
| 1156 Label done; | |
| 1157 | |
| 1158 // If no method data exists, and the counter is high enough, make one. | |
| 1159 int ipl_offs = load_const_optimized(Rscratch, &InvocationCounter::InterpreterProfileLimit, R0, true); | |
| 1160 lwz(Rscratch, ipl_offs, Rscratch); | |
| 1161 | |
| 1162 cmpdi(CCR0, R28_mdx, 0); | |
| 1163 // Test to see if we should create a method data oop. | |
| 1164 cmpd(CCR1, Rscratch /* InterpreterProfileLimit */, invocation_count); | |
| 1165 bne(CCR0, done); | |
| 1166 bge(CCR1, profile_continue); | |
| 1167 | |
| 1168 // Build it now. | |
| 1169 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); | |
| 1170 set_method_data_pointer_for_bcp(); | |
| 1171 b(profile_continue); | |
| 1172 | |
| 1173 align(32, 12); | |
| 1174 bind(done); | |
| 1175 } | |
| 1176 | |
| 1177 void InterpreterMacroAssembler::test_backedge_count_for_osr(Register backedge_count, Register branch_bcp, Register Rtmp) { | |
| 1178 assert_different_registers(backedge_count, Rtmp, branch_bcp); | |
| 1179 assert(UseOnStackReplacement,"Must UseOnStackReplacement to test_backedge_count_for_osr"); | |
| 1180 | |
| 1181 Label did_not_overflow; | |
| 1182 Label overflow_with_error; | |
| 1183 | |
| 1184 int ibbl_offs = load_const_optimized(Rtmp, &InvocationCounter::InterpreterBackwardBranchLimit, R0, true); | |
| 1185 lwz(Rtmp, ibbl_offs, Rtmp); | |
| 1186 cmpw(CCR0, backedge_count, Rtmp); | |
| 1187 | |
| 1188 blt(CCR0, did_not_overflow); | |
| 1189 | |
| 1190 // When ProfileInterpreter is on, the backedge_count comes from the | |
| 1191 // methodDataOop, which value does not get reset on the call to | |
| 1192 // frequency_counter_overflow(). To avoid excessive calls to the overflow | |
| 1193 // routine while the method is being compiled, add a second test to make sure | |
| 1194 // the overflow function is called only once every overflow_frequency. | |
| 1195 if (ProfileInterpreter) { | |
| 1196 const int overflow_frequency = 1024; | |
| 1197 li(Rtmp, overflow_frequency-1); | |
| 1198 andr(Rtmp, Rtmp, backedge_count); | |
| 1199 cmpwi(CCR0, Rtmp, 0); | |
| 1200 bne(CCR0, did_not_overflow); | |
| 1201 } | |
| 1202 | |
| 1203 // Overflow in loop, pass branch bytecode. | |
| 1204 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), branch_bcp, true); | |
| 1205 | |
| 1206 // Was an OSR adapter generated? | |
| 1207 // O0 = osr nmethod | |
| 1208 cmpdi(CCR0, R3_RET, 0); | |
| 1209 beq(CCR0, overflow_with_error); | |
| 1210 | |
| 1211 // Has the nmethod been invalidated already? | |
| 1212 lwz(Rtmp, nmethod::entry_bci_offset(), R3_RET); | |
| 1213 cmpwi(CCR0, Rtmp, InvalidOSREntryBci); | |
| 1214 beq(CCR0, overflow_with_error); | |
| 1215 | |
| 1216 // Migrate the interpreter frame off of the stack. | |
| 1217 // We can use all registers because we will not return to interpreter from this point. | |
| 1218 | |
| 1219 // Save nmethod. | |
| 1220 const Register osr_nmethod = R31; | |
| 1221 mr(osr_nmethod, R3_RET); | |
| 1222 set_top_ijava_frame_at_SP_as_last_Java_frame(R1_SP, R11_scratch1); | |
| 1223 call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin), R16_thread); | |
| 1224 reset_last_Java_frame(); | |
| 1225 // OSR buffer is in ARG1 | |
| 1226 | |
| 1227 // Remove the interpreter frame. | |
| 1228 merge_frames(/*top_frame_sp*/ R21_sender_SP, /*return_pc*/ R0, R11_scratch1, R12_scratch2); | |
| 1229 | |
| 1230 // Jump to the osr code. | |
| 1231 ld(R11_scratch1, nmethod::osr_entry_point_offset(), osr_nmethod); | |
| 1232 mtlr(R0); | |
| 1233 mtctr(R11_scratch1); | |
| 1234 bctr(); | |
| 1235 | |
| 1236 align(32, 12); | |
| 1237 bind(overflow_with_error); | |
| 1238 bind(did_not_overflow); | |
| 1239 } | |
| 1240 | |
| 1241 // Store a value at some constant offset from the method data pointer. | |
| 1242 void InterpreterMacroAssembler::set_mdp_data_at(int constant, Register value) { | |
| 1243 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1244 | |
| 1245 std(value, constant, R28_mdx); | |
| 1246 } | |
| 1247 | |
| 1248 // Increment the value at some constant offset from the method data pointer. | |
| 1249 void InterpreterMacroAssembler::increment_mdp_data_at(int constant, | |
| 1250 Register counter_addr, | |
| 1251 Register Rbumped_count, | |
| 1252 bool decrement) { | |
| 1253 // Locate the counter at a fixed offset from the mdp: | |
| 1254 addi(counter_addr, R28_mdx, constant); | |
| 1255 increment_mdp_data_at(counter_addr, Rbumped_count, decrement); | |
| 1256 } | |
| 1257 | |
| 1258 // Increment the value at some non-fixed (reg + constant) offset from | |
| 1259 // the method data pointer. | |
| 1260 void InterpreterMacroAssembler::increment_mdp_data_at(Register reg, | |
| 1261 int constant, | |
| 1262 Register scratch, | |
| 1263 Register Rbumped_count, | |
| 1264 bool decrement) { | |
| 1265 // Add the constant to reg to get the offset. | |
| 1266 add(scratch, R28_mdx, reg); | |
| 1267 // Then calculate the counter address. | |
| 1268 addi(scratch, scratch, constant); | |
| 1269 increment_mdp_data_at(scratch, Rbumped_count, decrement); | |
| 1270 } | |
| 1271 | |
| 1272 void InterpreterMacroAssembler::increment_mdp_data_at(Register counter_addr, | |
| 1273 Register Rbumped_count, | |
| 1274 bool decrement) { | |
| 1275 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1276 | |
| 1277 // Load the counter. | |
| 1278 ld(Rbumped_count, 0, counter_addr); | |
| 1279 | |
| 1280 if (decrement) { | |
| 1281 // Decrement the register. Set condition codes. | |
| 1282 addi(Rbumped_count, Rbumped_count, - DataLayout::counter_increment); | |
| 1283 // Store the decremented counter, if it is still negative. | |
| 1284 std(Rbumped_count, 0, counter_addr); | |
| 1285 // Note: add/sub overflow check are not ported, since 64 bit | |
| 1286 // calculation should never overflow. | |
| 1287 } else { | |
| 1288 // Increment the register. Set carry flag. | |
| 1289 addi(Rbumped_count, Rbumped_count, DataLayout::counter_increment); | |
| 1290 // Store the incremented counter. | |
| 1291 std(Rbumped_count, 0, counter_addr); | |
| 1292 } | |
| 1293 } | |
| 1294 | |
| 1295 // Set a flag value at the current method data pointer position. | |
| 1296 void InterpreterMacroAssembler::set_mdp_flag_at(int flag_constant, | |
| 1297 Register scratch) { | |
| 1298 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1299 // Load the data header. | |
| 1300 lbz(scratch, in_bytes(DataLayout::flags_offset()), R28_mdx); | |
| 1301 // Set the flag. | |
| 1302 ori(scratch, scratch, flag_constant); | |
| 1303 // Store the modified header. | |
| 1304 stb(scratch, in_bytes(DataLayout::flags_offset()), R28_mdx); | |
| 1305 } | |
| 1306 | |
| 1307 // Test the location at some offset from the method data pointer. | |
| 1308 // If it is not equal to value, branch to the not_equal_continue Label. | |
| 1309 void InterpreterMacroAssembler::test_mdp_data_at(int offset, | |
| 1310 Register value, | |
| 1311 Label& not_equal_continue, | |
| 1312 Register test_out) { | |
| 1313 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1314 | |
| 1315 ld(test_out, offset, R28_mdx); | |
| 1316 cmpd(CCR0, value, test_out); | |
| 1317 bne(CCR0, not_equal_continue); | |
| 1318 } | |
| 1319 | |
| 1320 // Update the method data pointer by the displacement located at some fixed | |
| 1321 // offset from the method data pointer. | |
| 1322 void InterpreterMacroAssembler::update_mdp_by_offset(int offset_of_disp, | |
| 1323 Register scratch) { | |
| 1324 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1325 | |
| 1326 ld(scratch, offset_of_disp, R28_mdx); | |
| 1327 add(R28_mdx, scratch, R28_mdx); | |
| 1328 } | |
| 1329 | |
| 1330 // Update the method data pointer by the displacement located at the | |
| 1331 // offset (reg + offset_of_disp). | |
| 1332 void InterpreterMacroAssembler::update_mdp_by_offset(Register reg, | |
| 1333 int offset_of_disp, | |
| 1334 Register scratch) { | |
| 1335 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1336 | |
| 1337 add(scratch, reg, R28_mdx); | |
| 1338 ld(scratch, offset_of_disp, scratch); | |
| 1339 add(R28_mdx, scratch, R28_mdx); | |
| 1340 } | |
| 1341 | |
| 1342 // Update the method data pointer by a simple constant displacement. | |
| 1343 void InterpreterMacroAssembler::update_mdp_by_constant(int constant) { | |
| 1344 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1345 addi(R28_mdx, R28_mdx, constant); | |
| 1346 } | |
| 1347 | |
| 1348 // Update the method data pointer for a _ret bytecode whose target | |
| 1349 // was not among our cached targets. | |
| 1350 void InterpreterMacroAssembler::update_mdp_for_ret(TosState state, | |
| 1351 Register return_bci) { | |
| 1352 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1353 | |
| 1354 push(state); | |
| 1355 assert(return_bci->is_nonvolatile(), "need to protect return_bci"); | |
| 1356 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci); | |
| 1357 pop(state); | |
| 1358 } | |
| 1359 | |
| 1360 // Increments the backedge counter. | |
| 1361 // Returns backedge counter + invocation counter in Rdst. | |
| 1362 void InterpreterMacroAssembler::increment_backedge_counter(const Register Rcounters, const Register Rdst, | |
| 1363 const Register Rtmp1, Register Rscratch) { | |
| 1364 assert(UseCompiler, "incrementing must be useful"); | |
| 1365 assert_different_registers(Rdst, Rtmp1); | |
| 1366 const Register invocation_counter = Rtmp1; | |
| 1367 const Register counter = Rdst; | |
| 1368 // TODO ppc port assert(4 == InvocationCounter::sz_counter(), "unexpected field size."); | |
| 1369 | |
| 1370 // Load backedge counter. | |
| 1371 lwz(counter, in_bytes(MethodCounters::backedge_counter_offset()) + | |
| 1372 in_bytes(InvocationCounter::counter_offset()), Rcounters); | |
| 1373 // Load invocation counter. | |
| 1374 lwz(invocation_counter, in_bytes(MethodCounters::invocation_counter_offset()) + | |
| 1375 in_bytes(InvocationCounter::counter_offset()), Rcounters); | |
| 1376 | |
| 1377 // Add the delta to the backedge counter. | |
| 1378 addi(counter, counter, InvocationCounter::count_increment); | |
| 1379 | |
| 1380 // Mask the invocation counter. | |
| 1381 li(Rscratch, InvocationCounter::count_mask_value); | |
| 1382 andr(invocation_counter, invocation_counter, Rscratch); | |
| 1383 | |
| 1384 // Store new counter value. | |
| 1385 stw(counter, in_bytes(MethodCounters::backedge_counter_offset()) + | |
| 1386 in_bytes(InvocationCounter::counter_offset()), Rcounters); | |
| 1387 // Return invocation counter + backedge counter. | |
| 1388 add(counter, counter, invocation_counter); | |
| 1389 } | |
| 1390 | |
| 1391 // Count a taken branch in the bytecodes. | |
| 1392 void InterpreterMacroAssembler::profile_taken_branch(Register scratch, Register bumped_count) { | |
| 1393 if (ProfileInterpreter) { | |
| 1394 Label profile_continue; | |
| 1395 | |
| 1396 // If no method data exists, go to profile_continue. | |
| 1397 test_method_data_pointer(profile_continue); | |
| 1398 | |
| 1399 // We are taking a branch. Increment the taken count. | |
| 1400 increment_mdp_data_at(in_bytes(JumpData::taken_offset()), scratch, bumped_count); | |
| 1401 | |
| 1402 // The method data pointer needs to be updated to reflect the new target. | |
| 1403 update_mdp_by_offset(in_bytes(JumpData::displacement_offset()), scratch); | |
| 1404 bind (profile_continue); | |
| 1405 } | |
| 1406 } | |
| 1407 | |
| 1408 // Count a not-taken branch in the bytecodes. | |
| 1409 void InterpreterMacroAssembler::profile_not_taken_branch(Register scratch1, Register scratch2) { | |
| 1410 if (ProfileInterpreter) { | |
| 1411 Label profile_continue; | |
| 1412 | |
| 1413 // If no method data exists, go to profile_continue. | |
| 1414 test_method_data_pointer(profile_continue); | |
| 1415 | |
| 1416 // We are taking a branch. Increment the not taken count. | |
| 1417 increment_mdp_data_at(in_bytes(BranchData::not_taken_offset()), scratch1, scratch2); | |
| 1418 | |
| 1419 // The method data pointer needs to be updated to correspond to the | |
| 1420 // next bytecode. | |
| 1421 update_mdp_by_constant(in_bytes(BranchData::branch_data_size())); | |
| 1422 bind (profile_continue); | |
| 1423 } | |
| 1424 } | |
| 1425 | |
| 1426 // Count a non-virtual call in the bytecodes. | |
| 1427 void InterpreterMacroAssembler::profile_call(Register scratch1, Register scratch2) { | |
| 1428 if (ProfileInterpreter) { | |
| 1429 Label profile_continue; | |
| 1430 | |
| 1431 // If no method data exists, go to profile_continue. | |
| 1432 test_method_data_pointer(profile_continue); | |
| 1433 | |
| 1434 // We are making a call. Increment the count. | |
| 1435 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2); | |
| 1436 | |
| 1437 // The method data pointer needs to be updated to reflect the new target. | |
| 1438 update_mdp_by_constant(in_bytes(CounterData::counter_data_size())); | |
| 1439 bind (profile_continue); | |
| 1440 } | |
| 1441 } | |
| 1442 | |
| 1443 // Count a final call in the bytecodes. | |
| 1444 void InterpreterMacroAssembler::profile_final_call(Register scratch1, Register scratch2) { | |
| 1445 if (ProfileInterpreter) { | |
| 1446 Label profile_continue; | |
| 1447 | |
| 1448 // If no method data exists, go to profile_continue. | |
| 1449 test_method_data_pointer(profile_continue); | |
| 1450 | |
| 1451 // We are making a call. Increment the count. | |
| 1452 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2); | |
| 1453 | |
| 1454 // The method data pointer needs to be updated to reflect the new target. | |
| 1455 update_mdp_by_constant(in_bytes(VirtualCallData::virtual_call_data_size())); | |
| 1456 bind (profile_continue); | |
| 1457 } | |
| 1458 } | |
| 1459 | |
| 1460 // Count a virtual call in the bytecodes. | |
| 1461 void InterpreterMacroAssembler::profile_virtual_call(Register Rreceiver, | |
| 1462 Register Rscratch1, | |
| 1463 Register Rscratch2, | |
| 1464 bool receiver_can_be_null) { | |
| 1465 if (!ProfileInterpreter) { return; } | |
| 1466 Label profile_continue; | |
| 1467 | |
| 1468 // If no method data exists, go to profile_continue. | |
| 1469 test_method_data_pointer(profile_continue); | |
| 1470 | |
| 1471 Label skip_receiver_profile; | |
| 1472 if (receiver_can_be_null) { | |
| 1473 Label not_null; | |
| 1474 cmpdi(CCR0, Rreceiver, 0); | |
| 1475 bne(CCR0, not_null); | |
| 1476 // We are making a call. Increment the count for null receiver. | |
| 1477 increment_mdp_data_at(in_bytes(CounterData::count_offset()), Rscratch1, Rscratch2); | |
| 1478 b(skip_receiver_profile); | |
| 1479 bind(not_null); | |
| 1480 } | |
| 1481 | |
| 1482 // Record the receiver type. | |
| 1483 record_klass_in_profile(Rreceiver, Rscratch1, Rscratch2, true); | |
| 1484 bind(skip_receiver_profile); | |
| 1485 | |
| 1486 // The method data pointer needs to be updated to reflect the new target. | |
| 1487 update_mdp_by_constant(in_bytes(VirtualCallData::virtual_call_data_size())); | |
| 1488 bind (profile_continue); | |
| 1489 } | |
| 1490 | |
| 1491 void InterpreterMacroAssembler::profile_typecheck(Register Rklass, Register Rscratch1, Register Rscratch2) { | |
| 1492 if (ProfileInterpreter) { | |
| 1493 Label profile_continue; | |
| 1494 | |
| 1495 // If no method data exists, go to profile_continue. | |
| 1496 test_method_data_pointer(profile_continue); | |
| 1497 | |
| 1498 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
| 1499 if (TypeProfileCasts) { | |
| 1500 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1501 | |
| 1502 // Record the object type. | |
| 1503 record_klass_in_profile(Rklass, Rscratch1, Rscratch2, false); | |
| 1504 } | |
| 1505 | |
| 1506 // The method data pointer needs to be updated. | |
| 1507 update_mdp_by_constant(mdp_delta); | |
| 1508 | |
| 1509 bind (profile_continue); | |
| 1510 } | |
| 1511 } | |
| 1512 | |
| 1513 void InterpreterMacroAssembler::profile_typecheck_failed(Register Rscratch1, Register Rscratch2) { | |
| 1514 if (ProfileInterpreter && TypeProfileCasts) { | |
| 1515 Label profile_continue; | |
| 1516 | |
| 1517 // If no method data exists, go to profile_continue. | |
| 1518 test_method_data_pointer(profile_continue); | |
| 1519 | |
| 1520 int count_offset = in_bytes(CounterData::count_offset()); | |
| 1521 // Back up the address, since we have already bumped the mdp. | |
| 1522 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1523 | |
| 1524 // *Decrement* the counter. We expect to see zero or small negatives. | |
| 1525 increment_mdp_data_at(count_offset, Rscratch1, Rscratch2, true); | |
| 1526 | |
| 1527 bind (profile_continue); | |
| 1528 } | |
| 1529 } | |
| 1530 | |
| 1531 // Count a ret in the bytecodes. | |
| 1532 void InterpreterMacroAssembler::profile_ret(TosState state, Register return_bci, Register scratch1, Register scratch2) { | |
| 1533 if (ProfileInterpreter) { | |
| 1534 Label profile_continue; | |
| 1535 uint row; | |
| 1536 | |
| 1537 // If no method data exists, go to profile_continue. | |
| 1538 test_method_data_pointer(profile_continue); | |
| 1539 | |
| 1540 // Update the total ret count. | |
| 1541 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2 ); | |
| 1542 | |
| 1543 for (row = 0; row < RetData::row_limit(); row++) { | |
| 1544 Label next_test; | |
| 1545 | |
| 1546 // See if return_bci is equal to bci[n]: | |
| 1547 test_mdp_data_at(in_bytes(RetData::bci_offset(row)), return_bci, next_test, scratch1); | |
| 1548 | |
| 1549 // return_bci is equal to bci[n]. Increment the count. | |
| 1550 increment_mdp_data_at(in_bytes(RetData::bci_count_offset(row)), scratch1, scratch2); | |
| 1551 | |
| 1552 // The method data pointer needs to be updated to reflect the new target. | |
| 1553 update_mdp_by_offset(in_bytes(RetData::bci_displacement_offset(row)), scratch1); | |
| 1554 b(profile_continue); | |
| 1555 bind(next_test); | |
| 1556 } | |
| 1557 | |
| 1558 update_mdp_for_ret(state, return_bci); | |
| 1559 | |
| 1560 bind (profile_continue); | |
| 1561 } | |
| 1562 } | |
| 1563 | |
| 1564 // Count the default case of a switch construct. | |
| 1565 void InterpreterMacroAssembler::profile_switch_default(Register scratch1, Register scratch2) { | |
| 1566 if (ProfileInterpreter) { | |
| 1567 Label profile_continue; | |
| 1568 | |
| 1569 // If no method data exists, go to profile_continue. | |
| 1570 test_method_data_pointer(profile_continue); | |
| 1571 | |
| 1572 // Update the default case count | |
| 1573 increment_mdp_data_at(in_bytes(MultiBranchData::default_count_offset()), | |
| 1574 scratch1, scratch2); | |
| 1575 | |
| 1576 // The method data pointer needs to be updated. | |
| 1577 update_mdp_by_offset(in_bytes(MultiBranchData::default_displacement_offset()), | |
| 1578 scratch1); | |
| 1579 | |
| 1580 bind (profile_continue); | |
| 1581 } | |
| 1582 } | |
| 1583 | |
| 1584 // Count the index'th case of a switch construct. | |
| 1585 void InterpreterMacroAssembler::profile_switch_case(Register index, | |
| 1586 Register scratch1, | |
| 1587 Register scratch2, | |
| 1588 Register scratch3) { | |
| 1589 if (ProfileInterpreter) { | |
| 1590 assert_different_registers(index, scratch1, scratch2, scratch3); | |
| 1591 Label profile_continue; | |
| 1592 | |
| 1593 // If no method data exists, go to profile_continue. | |
| 1594 test_method_data_pointer(profile_continue); | |
| 1595 | |
| 1596 // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes(). | |
| 1597 li(scratch3, in_bytes(MultiBranchData::case_array_offset())); | |
| 1598 | |
| 1599 assert (in_bytes(MultiBranchData::per_case_size()) == 16, "so that shladd works"); | |
| 1600 sldi(scratch1, index, exact_log2(in_bytes(MultiBranchData::per_case_size()))); | |
| 1601 add(scratch1, scratch1, scratch3); | |
| 1602 | |
| 1603 // Update the case count. | |
| 1604 increment_mdp_data_at(scratch1, in_bytes(MultiBranchData::relative_count_offset()), scratch2, scratch3); | |
| 1605 | |
| 1606 // The method data pointer needs to be updated. | |
| 1607 update_mdp_by_offset(scratch1, in_bytes(MultiBranchData::relative_displacement_offset()), scratch2); | |
| 1608 | |
| 1609 bind (profile_continue); | |
| 1610 } | |
| 1611 } | |
| 1612 | |
| 1613 void InterpreterMacroAssembler::profile_null_seen(Register Rscratch1, Register Rscratch2) { | |
| 1614 if (ProfileInterpreter) { | |
| 1615 assert_different_registers(Rscratch1, Rscratch2); | |
| 1616 Label profile_continue; | |
| 1617 | |
| 1618 // If no method data exists, go to profile_continue. | |
| 1619 test_method_data_pointer(profile_continue); | |
| 1620 | |
| 1621 set_mdp_flag_at(BitData::null_seen_byte_constant(), Rscratch1); | |
| 1622 | |
| 1623 // The method data pointer needs to be updated. | |
| 1624 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
| 1625 if (TypeProfileCasts) { | |
| 1626 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1627 } | |
| 1628 update_mdp_by_constant(mdp_delta); | |
| 1629 | |
| 1630 bind (profile_continue); | |
| 1631 } | |
| 1632 } | |
| 1633 | |
| 1634 void InterpreterMacroAssembler::record_klass_in_profile(Register Rreceiver, | |
| 1635 Register Rscratch1, Register Rscratch2, | |
| 1636 bool is_virtual_call) { | |
| 1637 assert(ProfileInterpreter, "must be profiling"); | |
| 1638 assert_different_registers(Rreceiver, Rscratch1, Rscratch2); | |
| 1639 | |
| 1640 Label done; | |
| 1641 record_klass_in_profile_helper(Rreceiver, Rscratch1, Rscratch2, 0, done, is_virtual_call); | |
| 1642 bind (done); | |
| 1643 } | |
| 1644 | |
| 1645 void InterpreterMacroAssembler::record_klass_in_profile_helper( | |
| 1646 Register receiver, Register scratch1, Register scratch2, | |
| 1647 int start_row, Label& done, bool is_virtual_call) { | |
| 1648 if (TypeProfileWidth == 0) { | |
| 1649 if (is_virtual_call) { | |
| 1650 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2); | |
| 1651 } | |
| 1652 return; | |
| 1653 } | |
| 1654 | |
| 1655 int last_row = VirtualCallData::row_limit() - 1; | |
| 1656 assert(start_row <= last_row, "must be work left to do"); | |
| 1657 // Test this row for both the receiver and for null. | |
| 1658 // Take any of three different outcomes: | |
| 1659 // 1. found receiver => increment count and goto done | |
| 1660 // 2. found null => keep looking for case 1, maybe allocate this cell | |
| 1661 // 3. found something else => keep looking for cases 1 and 2 | |
| 1662 // Case 3 is handled by a recursive call. | |
| 1663 for (int row = start_row; row <= last_row; row++) { | |
| 1664 Label next_test; | |
| 1665 bool test_for_null_also = (row == start_row); | |
| 1666 | |
| 1667 // See if the receiver is receiver[n]. | |
| 1668 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row)); | |
| 1669 test_mdp_data_at(recvr_offset, receiver, next_test, scratch1); | |
| 1670 // delayed()->tst(scratch); | |
| 1671 | |
| 1672 // The receiver is receiver[n]. Increment count[n]. | |
| 1673 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row)); | |
| 1674 increment_mdp_data_at(count_offset, scratch1, scratch2); | |
| 1675 b(done); | |
| 1676 bind(next_test); | |
| 1677 | |
| 1678 if (test_for_null_also) { | |
| 1679 Label found_null; | |
| 1680 // Failed the equality check on receiver[n]... Test for null. | |
| 1681 if (start_row == last_row) { | |
| 1682 // The only thing left to do is handle the null case. | |
| 1683 if (is_virtual_call) { | |
| 1684 // Scratch1 contains test_out from test_mdp_data_at. | |
| 1685 cmpdi(CCR0, scratch1, 0); | |
| 1686 beq(CCR0, found_null); | |
| 1687 // Receiver did not match any saved receiver and there is no empty row for it. | |
| 1688 // Increment total counter to indicate polymorphic case. | |
| 1689 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2); | |
| 1690 b(done); | |
| 1691 bind(found_null); | |
| 1692 } else { | |
| 1693 cmpdi(CCR0, scratch1, 0); | |
| 1694 bne(CCR0, done); | |
| 1695 } | |
| 1696 break; | |
| 1697 } | |
| 1698 // Since null is rare, make it be the branch-taken case. | |
| 1699 cmpdi(CCR0, scratch1, 0); | |
| 1700 beq(CCR0, found_null); | |
| 1701 | |
| 1702 // Put all the "Case 3" tests here. | |
| 1703 record_klass_in_profile_helper(receiver, scratch1, scratch2, start_row + 1, done, is_virtual_call); | |
| 1704 | |
| 1705 // Found a null. Keep searching for a matching receiver, | |
| 1706 // but remember that this is an empty (unused) slot. | |
| 1707 bind(found_null); | |
| 1708 } | |
| 1709 } | |
| 1710 | |
| 1711 // In the fall-through case, we found no matching receiver, but we | |
| 1712 // observed the receiver[start_row] is NULL. | |
| 1713 | |
| 1714 // Fill in the receiver field and increment the count. | |
| 1715 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row)); | |
| 1716 set_mdp_data_at(recvr_offset, receiver); | |
| 1717 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row)); | |
| 1718 li(scratch1, DataLayout::counter_increment); | |
| 1719 set_mdp_data_at(count_offset, scratch1); | |
| 1720 if (start_row > 0) { | |
| 1721 b(done); | |
| 1722 } | |
| 1723 } | |
| 1724 | |
|
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1725 // Argument and return type profilig. |
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1726 // kills: tmp, tmp2, R0, CR0, CR1 |
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1727 void InterpreterMacroAssembler::profile_obj_type(Register obj, Register mdo_addr_base, |
|
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1728 RegisterOrConstant mdo_addr_offs, Register tmp, Register tmp2) { |
|
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1729 Label do_nothing, do_update; |
|
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1730 |
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1731 // tmp2 = obj is allowed |
|
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1732 assert_different_registers(obj, mdo_addr_base, tmp, R0); |
|
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1733 assert_different_registers(tmp2, mdo_addr_base, tmp, R0); |
|
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1734 const Register klass = tmp2; |
|
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1735 |
|
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1736 verify_oop(obj); |
|
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1737 |
|
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|
1738 ld(tmp, mdo_addr_offs, mdo_addr_base); |
|
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1739 |
|
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1740 // Set null_seen if obj is 0. |
|
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1741 cmpdi(CCR0, obj, 0); |
|
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|
1742 ori(R0, tmp, TypeEntries::null_seen); |
|
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1743 beq(CCR0, do_update); |
|
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1744 |
|
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|
1745 load_klass(klass, obj); |
|
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1746 |
|
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|
1747 clrrdi(R0, tmp, exact_log2(-TypeEntries::type_klass_mask)); |
|
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1748 // Basically same as andi(R0, tmp, TypeEntries::type_klass_mask); |
|
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|
1749 cmpd(CCR1, R0, klass); |
|
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1750 // Klass seen before, nothing to do (regardless of unknown bit). |
|
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1751 //beq(CCR1, do_nothing); |
|
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|
1752 |
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|
1753 andi_(R0, klass, TypeEntries::type_unknown); |
|
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1754 // Already unknown. Nothing to do anymore. |
|
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|
1755 //bne(CCR0, do_nothing); |
|
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|
1756 crorc(/*CCR0 eq*/2, /*CCR1 eq*/4+2, /*CCR0 eq*/2); // cr0 eq = cr1 eq or cr0 ne |
|
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|
1757 beq(CCR0, do_nothing); |
|
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|
1758 |
|
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|
1759 clrrdi_(R0, tmp, exact_log2(-TypeEntries::type_mask)); |
|
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1760 orr(R0, klass, tmp); // Combine klass and null_seen bit (only used if (tmp & type_mask)==0). |
|
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1761 beq(CCR0, do_update); // First time here. Set profile type. |
|
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|
1762 |
|
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1763 // Different than before. Cannot keep accurate profile. |
|
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|
1764 ori(R0, tmp, TypeEntries::type_unknown); |
|
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|
1765 |
|
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|
1766 bind(do_update); |
|
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|
1767 // update profile |
|
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1768 std(R0, mdo_addr_offs, mdo_addr_base); |
|
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|
1769 |
|
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|
1770 align(32, 12); |
|
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|
1771 bind(do_nothing); |
|
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|
1772 } |
|
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|
1773 |
|
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|
1774 void InterpreterMacroAssembler::profile_arguments_type(Register callee, Register tmp1, Register tmp2, bool is_virtual) { |
|
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1775 if (!ProfileInterpreter) { |
|
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|
1776 return; |
|
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|
1777 } |
|
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|
1778 |
|
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1779 assert_different_registers(callee, tmp1, tmp2, R28_mdx); |
|
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1780 |
|
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1781 if (MethodData::profile_arguments() || MethodData::profile_return()) { |
|
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1782 Label profile_continue; |
|
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1783 |
|
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1784 test_method_data_pointer(profile_continue); |
|
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1785 |
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1786 int off_to_start = is_virtual ? in_bytes(VirtualCallData::virtual_call_data_size()) : in_bytes(CounterData::counter_data_size()); |
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1787 |
|
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1788 lbz(tmp1, in_bytes(DataLayout::tag_offset()) - off_to_start, R28_mdx); |
|
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1789 cmpwi(CCR0, tmp1, is_virtual ? DataLayout::virtual_call_type_data_tag : DataLayout::call_type_data_tag); |
|
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1790 bne(CCR0, profile_continue); |
|
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1791 |
|
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1792 if (MethodData::profile_arguments()) { |
|
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1793 Label done; |
|
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1794 int off_to_args = in_bytes(TypeEntriesAtCall::args_data_offset()); |
|
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1795 add(R28_mdx, off_to_args, R28_mdx); |
|
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1796 |
|
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1797 for (int i = 0; i < TypeProfileArgsLimit; i++) { |
|
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1798 if (i > 0 || MethodData::profile_return()) { |
|
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1799 // If return value type is profiled we may have no argument to profile. |
|
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1800 ld(tmp1, in_bytes(TypeEntriesAtCall::cell_count_offset())-off_to_args, R28_mdx); |
|
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1801 cmpdi(CCR0, tmp1, (i+1)*TypeStackSlotEntries::per_arg_count()); |
|
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1802 addi(tmp1, tmp1, -i*TypeStackSlotEntries::per_arg_count()); |
|
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|
1803 blt(CCR0, done); |
|
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1804 } |
|
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|
1805 ld(tmp1, in_bytes(Method::const_offset()), callee); |
|
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|
1806 lhz(tmp1, in_bytes(ConstMethod::size_of_parameters_offset()), tmp1); |
|
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|
1807 // Stack offset o (zero based) from the start of the argument |
|
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|
1808 // list, for n arguments translates into offset n - o - 1 from |
|
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|
1809 // the end of the argument list. But there's an extra slot at |
|
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|
1810 // the top of the stack. So the offset is n - o from Lesp. |
|
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|
1811 ld(tmp2, in_bytes(TypeEntriesAtCall::stack_slot_offset(i))-off_to_args, R28_mdx); |
|
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|
1812 subf(tmp1, tmp2, tmp1); |
|
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|
1813 |
|
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|
1814 sldi(tmp1, tmp1, Interpreter::logStackElementSize); |
|
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|
1815 ldx(tmp1, tmp1, R15_esp); |
|
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1816 |
|
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|
1817 profile_obj_type(tmp1, R28_mdx, in_bytes(TypeEntriesAtCall::argument_type_offset(i))-off_to_args, tmp2, tmp1); |
|
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|
1818 |
|
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|
1819 int to_add = in_bytes(TypeStackSlotEntries::per_arg_size()); |
|
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|
1820 addi(R28_mdx, R28_mdx, to_add); |
|
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1821 off_to_args += to_add; |
|
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1822 } |
|
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|
1823 |
|
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1824 if (MethodData::profile_return()) { |
|
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|
1825 ld(tmp1, in_bytes(TypeEntriesAtCall::cell_count_offset())-off_to_args, R28_mdx); |
|
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|
1826 addi(tmp1, tmp1, -TypeProfileArgsLimit*TypeStackSlotEntries::per_arg_count()); |
|
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|
1827 } |
|
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|
1828 |
|
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|
1829 bind(done); |
|
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|
1830 |
|
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|
1831 if (MethodData::profile_return()) { |
|
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1832 // We're right after the type profile for the last |
|
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|
1833 // argument. tmp1 is the number of cells left in the |
|
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|
1834 // CallTypeData/VirtualCallTypeData to reach its end. Non null |
|
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1835 // if there's a return to profile. |
|
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|
1836 assert(ReturnTypeEntry::static_cell_count() < TypeStackSlotEntries::per_arg_count(), "can't move past ret type"); |
|
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|
1837 sldi(tmp1, tmp1, exact_log2(DataLayout::cell_size)); |
|
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|
1838 add(R28_mdx, tmp1, R28_mdx); |
|
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|
1839 } |
|
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|
1840 } else { |
|
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|
1841 assert(MethodData::profile_return(), "either profile call args or call ret"); |
|
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|
1842 update_mdp_by_constant(in_bytes(TypeEntriesAtCall::return_only_size())); |
|
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|
1843 } |
|
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|
1844 |
|
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|
1845 // Mdp points right after the end of the |
|
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|
1846 // CallTypeData/VirtualCallTypeData, right after the cells for the |
|
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|
1847 // return value type if there's one. |
|
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|
1848 align(32, 12); |
|
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|
1849 bind(profile_continue); |
|
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|
1850 } |
|
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|
1851 } |
|
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|
1852 |
|
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|
1853 void InterpreterMacroAssembler::profile_return_type(Register ret, Register tmp1, Register tmp2) { |
|
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|
1854 assert_different_registers(ret, tmp1, tmp2); |
|
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|
1855 if (ProfileInterpreter && MethodData::profile_return()) { |
|
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|
1856 Label profile_continue; |
|
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|
1857 |
|
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|
1858 test_method_data_pointer(profile_continue); |
|
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|
1859 |
|
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|
1860 if (MethodData::profile_return_jsr292_only()) { |
|
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|
1861 // If we don't profile all invoke bytecodes we must make sure |
|
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|
1862 // it's a bytecode we indeed profile. We can't go back to the |
|
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|
1863 // begining of the ProfileData we intend to update to check its |
|
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|
1864 // type because we're right after it and we don't known its |
|
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|
1865 // length. |
|
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|
1866 lbz(tmp1, 0, R14_bcp); |
|
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|
1867 lbz(tmp2, Method::intrinsic_id_offset_in_bytes(), R19_method); |
|
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|
1868 cmpwi(CCR0, tmp1, Bytecodes::_invokedynamic); |
|
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|
1869 cmpwi(CCR1, tmp1, Bytecodes::_invokehandle); |
|
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|
1870 cror(/*CR0 eq*/2, /*CR1 eq*/4+2, /*CR0 eq*/2); |
|
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|
1871 cmpwi(CCR1, tmp2, vmIntrinsics::_compiledLambdaForm); |
|
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|
1872 cror(/*CR0 eq*/2, /*CR1 eq*/4+2, /*CR0 eq*/2); |
|
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|
1873 bne(CCR0, profile_continue); |
|
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|
1874 } |
|
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|
1875 |
|
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|
1876 profile_obj_type(ret, R28_mdx, -in_bytes(ReturnTypeEntry::size()), tmp1, tmp2); |
|
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|
1877 |
|
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|
1878 align(32, 12); |
|
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|
1879 bind(profile_continue); |
|
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|
1880 } |
|
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|
1881 } |
|
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|
1882 |
|
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|
1883 void InterpreterMacroAssembler::profile_parameters_type(Register tmp1, Register tmp2, Register tmp3, Register tmp4) { |
|
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|
1884 if (ProfileInterpreter && MethodData::profile_parameters()) { |
|
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|
1885 Label profile_continue, done; |
|
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|
1886 |
|
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|
1887 test_method_data_pointer(profile_continue); |
|
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|
1888 |
|
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|
1889 // Load the offset of the area within the MDO used for |
|
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|
1890 // parameters. If it's negative we're not profiling any parameters. |
|
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|
1891 lwz(tmp1, in_bytes(MethodData::parameters_type_data_di_offset()) - in_bytes(MethodData::data_offset()), R28_mdx); |
|
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|
1892 cmpwi(CCR0, tmp1, 0); |
|
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|
1893 blt(CCR0, profile_continue); |
|
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|
1894 |
|
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|
1895 // Compute a pointer to the area for parameters from the offset |
|
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|
1896 // and move the pointer to the slot for the last |
|
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|
1897 // parameters. Collect profiling from last parameter down. |
|
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|
1898 // mdo start + parameters offset + array length - 1 |
|
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|
1899 |
|
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|
1900 // Pointer to the parameter area in the MDO. |
|
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|
1901 const Register mdp = tmp1; |
|
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|
1902 add(mdp, tmp1, R28_mdx); |
|
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|
1903 |
|
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|
1904 // Pffset of the current profile entry to update. |
|
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|
1905 const Register entry_offset = tmp2; |
|
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|
1906 // entry_offset = array len in number of cells |
|
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|
1907 ld(entry_offset, in_bytes(ArrayData::array_len_offset()), mdp); |
|
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|
1908 |
|
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|
1909 int off_base = in_bytes(ParametersTypeData::stack_slot_offset(0)); |
|
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|
1910 assert(off_base % DataLayout::cell_size == 0, "should be a number of cells"); |
|
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|
1911 |
|
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|
1912 // entry_offset (number of cells) = array len - size of 1 entry + offset of the stack slot field |
|
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1913 addi(entry_offset, entry_offset, -TypeStackSlotEntries::per_arg_count() + (off_base / DataLayout::cell_size)); |
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1914 // entry_offset in bytes |
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1915 sldi(entry_offset, entry_offset, exact_log2(DataLayout::cell_size)); |
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1916 |
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1917 Label loop; |
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1918 align(32, 12); |
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1919 bind(loop); |
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1920 |
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1921 // Load offset on the stack from the slot for this parameter. |
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1922 ld(tmp3, entry_offset, mdp); |
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1923 sldi(tmp3, tmp3, Interpreter::logStackElementSize); |
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1924 neg(tmp3, tmp3); |
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1925 // Read the parameter from the local area. |
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1926 ldx(tmp3, tmp3, R18_locals); |
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1927 |
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1928 // Make entry_offset now point to the type field for this parameter. |
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1929 int type_base = in_bytes(ParametersTypeData::type_offset(0)); |
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1930 assert(type_base > off_base, "unexpected"); |
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1931 addi(entry_offset, entry_offset, type_base - off_base); |
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1932 |
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1933 // Profile the parameter. |
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1934 profile_obj_type(tmp3, mdp, entry_offset, tmp4, tmp3); |
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1935 |
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1936 // Go to next parameter. |
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1937 int delta = TypeStackSlotEntries::per_arg_count() * DataLayout::cell_size + (type_base - off_base); |
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1938 cmpdi(CCR0, entry_offset, off_base + delta); |
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1939 addi(entry_offset, entry_offset, -delta); |
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1940 bge(CCR0, loop); |
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1941 |
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1942 align(32, 12); |
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1943 bind(profile_continue); |
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1944 } |
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1945 } |
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1946 |
| 17804 | 1947 // Add a InterpMonitorElem to stack (see frame_sparc.hpp). |
| 1948 void InterpreterMacroAssembler::add_monitor_to_stack(bool stack_is_empty, Register Rtemp1, Register Rtemp2) { | |
| 1949 | |
| 1950 // Very-local scratch registers. | |
| 1951 const Register esp = Rtemp1; | |
| 1952 const Register slot = Rtemp2; | |
| 1953 | |
| 1954 // Extracted monitor_size. | |
| 1955 int monitor_size = frame::interpreter_frame_monitor_size_in_bytes(); | |
| 1956 assert(Assembler::is_aligned((unsigned int)monitor_size, | |
| 1957 (unsigned int)frame::alignment_in_bytes), | |
| 1958 "size of a monitor must respect alignment of SP"); | |
| 1959 | |
| 1960 resize_frame(-monitor_size, /*temp*/esp); // Allocate space for new monitor | |
| 1961 std(R1_SP, _ijava_state_neg(top_frame_sp), esp); // esp contains fp | |
| 1962 | |
| 1963 // Shuffle expression stack down. Recall that stack_base points | |
| 1964 // just above the new expression stack bottom. Old_tos and new_tos | |
| 1965 // are used to scan thru the old and new expression stacks. | |
| 1966 if (!stack_is_empty) { | |
| 1967 Label copy_slot, copy_slot_finished; | |
| 1968 const Register n_slots = slot; | |
| 1969 | |
| 1970 addi(esp, R15_esp, Interpreter::stackElementSize); // Point to first element (pre-pushed stack). | |
| 1971 subf(n_slots, esp, R26_monitor); | |
| 1972 srdi_(n_slots, n_slots, LogBytesPerWord); // Compute number of slots to copy. | |
| 1973 assert(LogBytesPerWord == 3, "conflicts assembler instructions"); | |
| 1974 beq(CCR0, copy_slot_finished); // Nothing to copy. | |
| 1975 | |
| 1976 mtctr(n_slots); | |
| 1977 | |
| 1978 // loop | |
| 1979 bind(copy_slot); | |
| 1980 ld(slot, 0, esp); // Move expression stack down. | |
| 1981 std(slot, -monitor_size, esp); // distance = monitor_size | |
| 1982 addi(esp, esp, BytesPerWord); | |
| 1983 bdnz(copy_slot); | |
| 1984 | |
| 1985 bind(copy_slot_finished); | |
| 1986 } | |
| 1987 | |
| 1988 addi(R15_esp, R15_esp, -monitor_size); | |
| 1989 addi(R26_monitor, R26_monitor, -monitor_size); | |
| 1990 | |
| 1991 // Restart interpreter | |
| 1992 } | |
| 1993 | |
| 1994 // ============================================================================ | |
| 1995 // Java locals access | |
| 1996 | |
| 1997 // Load a local variable at index in Rindex into register Rdst_value. | |
| 1998 // Also puts address of local into Rdst_address as a service. | |
| 1999 // Kills: | |
| 2000 // - Rdst_value | |
| 2001 // - Rdst_address | |
| 2002 void InterpreterMacroAssembler::load_local_int(Register Rdst_value, Register Rdst_address, Register Rindex) { | |
| 2003 sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); | |
| 2004 subf(Rdst_address, Rdst_address, R18_locals); | |
| 2005 lwz(Rdst_value, 0, Rdst_address); | |
| 2006 } | |
| 2007 | |
| 2008 // Load a local variable at index in Rindex into register Rdst_value. | |
| 2009 // Also puts address of local into Rdst_address as a service. | |
| 2010 // Kills: | |
| 2011 // - Rdst_value | |
| 2012 // - Rdst_address | |
| 2013 void InterpreterMacroAssembler::load_local_long(Register Rdst_value, Register Rdst_address, Register Rindex) { | |
| 2014 sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); | |
| 2015 subf(Rdst_address, Rdst_address, R18_locals); | |
| 2016 ld(Rdst_value, -8, Rdst_address); | |
| 2017 } | |
| 2018 | |
| 2019 // Load a local variable at index in Rindex into register Rdst_value. | |
| 2020 // Also puts address of local into Rdst_address as a service. | |
| 2021 // Input: | |
| 2022 // - Rindex: slot nr of local variable | |
| 2023 // Kills: | |
| 2024 // - Rdst_value | |
| 2025 // - Rdst_address | |
| 2026 void InterpreterMacroAssembler::load_local_ptr(Register Rdst_value, Register Rdst_address, Register Rindex) { | |
| 2027 sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); | |
| 2028 subf(Rdst_address, Rdst_address, R18_locals); | |
| 2029 ld(Rdst_value, 0, Rdst_address); | |
| 2030 } | |
| 2031 | |
| 2032 // Load a local variable at index in Rindex into register Rdst_value. | |
| 2033 // Also puts address of local into Rdst_address as a service. | |
| 2034 // Kills: | |
| 2035 // - Rdst_value | |
| 2036 // - Rdst_address | |
| 2037 void InterpreterMacroAssembler::load_local_float(FloatRegister Rdst_value, Register Rdst_address, Register Rindex) { | |
| 2038 sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); | |
| 2039 subf(Rdst_address, Rdst_address, R18_locals); | |
| 2040 lfs(Rdst_value, 0, Rdst_address); | |
| 2041 } | |
| 2042 | |
| 2043 // Load a local variable at index in Rindex into register Rdst_value. | |
| 2044 // Also puts address of local into Rdst_address as a service. | |
| 2045 // Kills: | |
| 2046 // - Rdst_value | |
| 2047 // - Rdst_address | |
| 2048 void InterpreterMacroAssembler::load_local_double(FloatRegister Rdst_value, Register Rdst_address, Register Rindex) { | |
| 2049 sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); | |
| 2050 subf(Rdst_address, Rdst_address, R18_locals); | |
| 2051 lfd(Rdst_value, -8, Rdst_address); | |
| 2052 } | |
| 2053 | |
| 2054 // Store an int value at local variable slot Rindex. | |
| 2055 // Kills: | |
| 2056 // - Rindex | |
| 2057 void InterpreterMacroAssembler::store_local_int(Register Rvalue, Register Rindex) { | |
| 2058 sldi(Rindex, Rindex, Interpreter::logStackElementSize); | |
| 2059 subf(Rindex, Rindex, R18_locals); | |
| 2060 stw(Rvalue, 0, Rindex); | |
| 2061 } | |
| 2062 | |
| 2063 // Store a long value at local variable slot Rindex. | |
| 2064 // Kills: | |
| 2065 // - Rindex | |
| 2066 void InterpreterMacroAssembler::store_local_long(Register Rvalue, Register Rindex) { | |
| 2067 sldi(Rindex, Rindex, Interpreter::logStackElementSize); | |
| 2068 subf(Rindex, Rindex, R18_locals); | |
| 2069 std(Rvalue, -8, Rindex); | |
| 2070 } | |
| 2071 | |
| 2072 // Store an oop value at local variable slot Rindex. | |
| 2073 // Kills: | |
| 2074 // - Rindex | |
| 2075 void InterpreterMacroAssembler::store_local_ptr(Register Rvalue, Register Rindex) { | |
| 2076 sldi(Rindex, Rindex, Interpreter::logStackElementSize); | |
| 2077 subf(Rindex, Rindex, R18_locals); | |
| 2078 std(Rvalue, 0, Rindex); | |
| 2079 } | |
| 2080 | |
| 2081 // Store an int value at local variable slot Rindex. | |
| 2082 // Kills: | |
| 2083 // - Rindex | |
| 2084 void InterpreterMacroAssembler::store_local_float(FloatRegister Rvalue, Register Rindex) { | |
| 2085 sldi(Rindex, Rindex, Interpreter::logStackElementSize); | |
| 2086 subf(Rindex, Rindex, R18_locals); | |
| 2087 stfs(Rvalue, 0, Rindex); | |
| 2088 } | |
| 2089 | |
| 2090 // Store an int value at local variable slot Rindex. | |
| 2091 // Kills: | |
| 2092 // - Rindex | |
| 2093 void InterpreterMacroAssembler::store_local_double(FloatRegister Rvalue, Register Rindex) { | |
| 2094 sldi(Rindex, Rindex, Interpreter::logStackElementSize); | |
| 2095 subf(Rindex, Rindex, R18_locals); | |
| 2096 stfd(Rvalue, -8, Rindex); | |
| 2097 } | |
| 2098 | |
| 2099 // Read pending exception from thread and jump to interpreter. | |
| 2100 // Throw exception entry if one if pending. Fall through otherwise. | |
| 2101 void InterpreterMacroAssembler::check_and_forward_exception(Register Rscratch1, Register Rscratch2) { | |
| 2102 assert_different_registers(Rscratch1, Rscratch2, R3); | |
| 2103 Register Rexception = Rscratch1; | |
| 2104 Register Rtmp = Rscratch2; | |
| 2105 Label Ldone; | |
| 2106 // Get pending exception oop. | |
| 2107 ld(Rexception, thread_(pending_exception)); | |
| 2108 cmpdi(CCR0, Rexception, 0); | |
| 2109 beq(CCR0, Ldone); | |
| 2110 li(Rtmp, 0); | |
| 2111 mr_if_needed(R3, Rexception); | |
| 2112 std(Rtmp, thread_(pending_exception)); // Clear exception in thread | |
| 2113 if (Interpreter::rethrow_exception_entry() != NULL) { | |
| 2114 // Already got entry address. | |
| 2115 load_dispatch_table(Rtmp, (address*)Interpreter::rethrow_exception_entry()); | |
| 2116 } else { | |
| 2117 // Dynamically load entry address. | |
| 2118 int simm16_rest = load_const_optimized(Rtmp, &Interpreter::_rethrow_exception_entry, R0, true); | |
| 2119 ld(Rtmp, simm16_rest, Rtmp); | |
| 2120 } | |
| 2121 mtctr(Rtmp); | |
| 2122 save_interpreter_state(Rtmp); | |
| 2123 bctr(); | |
| 2124 | |
| 2125 align(32, 12); | |
| 2126 bind(Ldone); | |
| 2127 } | |
| 2128 | |
| 2129 void InterpreterMacroAssembler::call_VM(Register oop_result, address entry_point, bool check_exceptions) { | |
| 2130 save_interpreter_state(R11_scratch1); | |
| 2131 | |
| 2132 MacroAssembler::call_VM(oop_result, entry_point, false); | |
| 2133 | |
| 2134 restore_interpreter_state(R11_scratch1, /*bcp_and_mdx_only*/ true); | |
| 2135 | |
| 2136 check_and_handle_popframe(R11_scratch1); | |
| 2137 check_and_handle_earlyret(R11_scratch1); | |
| 2138 // Now check exceptions manually. | |
| 2139 if (check_exceptions) { | |
| 2140 check_and_forward_exception(R11_scratch1, R12_scratch2); | |
| 2141 } | |
| 2142 } | |
| 2143 | |
| 2144 void InterpreterMacroAssembler::call_VM(Register oop_result, address entry_point, Register arg_1, bool check_exceptions) { | |
| 2145 // ARG1 is reserved for the thread. | |
| 2146 mr_if_needed(R4_ARG2, arg_1); | |
| 2147 call_VM(oop_result, entry_point, check_exceptions); | |
| 2148 } | |
| 2149 | |
| 2150 void InterpreterMacroAssembler::call_VM(Register oop_result, address entry_point, Register arg_1, Register arg_2, bool check_exceptions) { | |
| 2151 // ARG1 is reserved for the thread. | |
| 2152 mr_if_needed(R4_ARG2, arg_1); | |
| 2153 assert(arg_2 != R4_ARG2, "smashed argument"); | |
| 2154 mr_if_needed(R5_ARG3, arg_2); | |
| 2155 call_VM(oop_result, entry_point, check_exceptions); | |
| 2156 } | |
| 2157 | |
| 2158 void InterpreterMacroAssembler::call_VM(Register oop_result, address entry_point, Register arg_1, Register arg_2, Register arg_3, bool check_exceptions) { | |
| 2159 // ARG1 is reserved for the thread. | |
| 2160 mr_if_needed(R4_ARG2, arg_1); | |
| 2161 assert(arg_2 != R4_ARG2, "smashed argument"); | |
| 2162 mr_if_needed(R5_ARG3, arg_2); | |
| 2163 assert(arg_3 != R4_ARG2 && arg_3 != R5_ARG3, "smashed argument"); | |
| 2164 mr_if_needed(R6_ARG4, arg_3); | |
| 2165 call_VM(oop_result, entry_point, check_exceptions); | |
| 2166 } | |
| 2167 | |
| 2168 void InterpreterMacroAssembler::save_interpreter_state(Register scratch) { | |
| 2169 ld(scratch, 0, R1_SP); | |
| 2170 std(R15_esp, _ijava_state_neg(esp), scratch); | |
| 2171 std(R14_bcp, _ijava_state_neg(bcp), scratch); | |
| 2172 std(R26_monitor, _ijava_state_neg(monitors), scratch); | |
| 2173 if (ProfileInterpreter) { std(R28_mdx, _ijava_state_neg(mdx), scratch); } | |
| 2174 // Other entries should be unchanged. | |
| 2175 } | |
| 2176 | |
| 2177 void InterpreterMacroAssembler::restore_interpreter_state(Register scratch, bool bcp_and_mdx_only) { | |
| 2178 ld(scratch, 0, R1_SP); | |
| 2179 ld(R14_bcp, _ijava_state_neg(bcp), scratch); // Changed by VM code (exception). | |
| 2180 if (ProfileInterpreter) { ld(R28_mdx, _ijava_state_neg(mdx), scratch); } // Changed by VM code. | |
| 2181 if (!bcp_and_mdx_only) { | |
| 2182 // Following ones are Metadata. | |
| 2183 ld(R19_method, _ijava_state_neg(method), scratch); | |
| 2184 ld(R27_constPoolCache, _ijava_state_neg(cpoolCache), scratch); | |
| 2185 // Following ones are stack addresses and don't require reload. | |
| 2186 ld(R15_esp, _ijava_state_neg(esp), scratch); | |
| 2187 ld(R18_locals, _ijava_state_neg(locals), scratch); | |
| 2188 ld(R26_monitor, _ijava_state_neg(monitors), scratch); | |
| 2189 } | |
| 2190 #ifdef ASSERT | |
| 2191 { | |
| 2192 Label Lok; | |
| 2193 subf(R0, R1_SP, scratch); | |
| 2194 cmpdi(CCR0, R0, frame::abi_reg_args_size + frame::ijava_state_size); | |
| 2195 bge(CCR0, Lok); | |
| 2196 stop("frame too small (restore istate)", 0x5432); | |
| 2197 bind(Lok); | |
| 2198 } | |
| 2199 { | |
| 2200 Label Lok; | |
| 2201 ld(R0, _ijava_state_neg(ijava_reserved), scratch); | |
| 2202 cmpdi(CCR0, R0, 0x5afe); | |
| 2203 beq(CCR0, Lok); | |
| 2204 stop("frame corrupted (restore istate)", 0x5afe); | |
| 2205 bind(Lok); | |
| 2206 } | |
| 2207 #endif | |
| 2208 } | |
| 2209 | |
| 2210 #endif // !CC_INTERP | |
| 2211 | |
|
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2212 void InterpreterMacroAssembler::get_method_counters(Register method, |
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2213 Register Rcounters, |
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2214 Label& skip) { |
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2215 BLOCK_COMMENT("Load and ev. allocate counter object {"); |
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2216 Label has_counters; |
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2217 ld(Rcounters, in_bytes(Method::method_counters_offset()), method); |
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2218 cmpdi(CCR0, Rcounters, 0); |
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2219 bne(CCR0, has_counters); |
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2220 call_VM(noreg, CAST_FROM_FN_PTR(address, |
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2221 InterpreterRuntime::build_method_counters), method, false); |
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2222 ld(Rcounters, in_bytes(Method::method_counters_offset()), method); |
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2223 cmpdi(CCR0, Rcounters, 0); |
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2224 beq(CCR0, skip); // No MethodCounters, OutOfMemory. |
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2225 BLOCK_COMMENT("} Load and ev. allocate counter object"); |
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parents:
diff
changeset
|
2226 |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2227 bind(has_counters); |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2228 } |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2229 |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff
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|
2230 void InterpreterMacroAssembler::increment_invocation_counter(Register Rcounters, Register iv_be_count, Register Rtmp_r0) { |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff
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|
2231 assert(UseCompiler, "incrementing must be useful"); |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
2232 Register invocation_count = iv_be_count; |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
2233 Register backedge_count = Rtmp_r0; |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2234 int delta = InvocationCounter::count_increment; |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2235 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2236 // Load each counter in a register. |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2237 // ld(inv_counter, Rtmp); |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2238 // ld(be_counter, Rtmp2); |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2239 int inv_counter_offset = in_bytes(MethodCounters::invocation_counter_offset() + |
|
ec28f9c041ff
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parents:
diff
changeset
|
2240 InvocationCounter::counter_offset()); |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2241 int be_counter_offset = in_bytes(MethodCounters::backedge_counter_offset() + |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2242 InvocationCounter::counter_offset()); |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2243 |
|
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parents:
diff
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|
2244 BLOCK_COMMENT("Increment profiling counters {"); |
|
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parents:
diff
changeset
|
2245 |
|
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parents:
diff
changeset
|
2246 // Load the backedge counter. |
|
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parents:
diff
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|
2247 lwz(backedge_count, be_counter_offset, Rcounters); // is unsigned int |
|
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parents:
diff
changeset
|
2248 // Mask the backedge counter. |
|
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parents:
diff
changeset
|
2249 Register tmp = invocation_count; |
|
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parents:
diff
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|
2250 li(tmp, InvocationCounter::count_mask_value); |
|
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parents:
diff
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|
2251 andr(backedge_count, tmp, backedge_count); // Cannot use andi, need sign extension of count_mask_value. |
|
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parents:
diff
changeset
|
2252 |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2253 // Load the invocation counter. |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2254 lwz(invocation_count, inv_counter_offset, Rcounters); // is unsigned int |
|
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parents:
diff
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|
2255 // Add the delta to the invocation counter and store the result. |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
2256 addi(invocation_count, invocation_count, delta); |
|
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parents:
diff
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|
2257 // Store value. |
|
ec28f9c041ff
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parents:
diff
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|
2258 stw(invocation_count, inv_counter_offset, Rcounters); |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
2259 |
|
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goetz
parents:
diff
changeset
|
2260 // Add invocation counter + backedge counter. |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2261 add(iv_be_count, backedge_count, invocation_count); |
|
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parents:
diff
changeset
|
2262 |
|
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parents:
diff
changeset
|
2263 // Note that this macro must leave the backedge_count + invocation_count in |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2264 // register iv_be_count! |
|
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parents:
diff
changeset
|
2265 BLOCK_COMMENT("} Increment profiling counters"); |
|
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goetz
parents:
diff
changeset
|
2266 } |
|
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parents:
diff
changeset
|
2267 |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2268 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) { |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2269 if (state == atos) { MacroAssembler::verify_oop(reg); } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2270 } |
|
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parents:
diff
changeset
|
2271 |
| 17804 | 2272 #ifndef CC_INTERP |
| 2273 // Local helper function for the verify_oop_or_return_address macro. | |
| 2274 static bool verify_return_address(Method* m, int bci) { | |
| 2275 #ifndef PRODUCT | |
| 2276 address pc = (address)(m->constMethod()) + in_bytes(ConstMethod::codes_offset()) + bci; | |
| 2277 // Assume it is a valid return address if it is inside m and is preceded by a jsr. | |
| 2278 if (!m->contains(pc)) return false; | |
| 2279 address jsr_pc; | |
| 2280 jsr_pc = pc - Bytecodes::length_for(Bytecodes::_jsr); | |
| 2281 if (*jsr_pc == Bytecodes::_jsr && jsr_pc >= m->code_base()) return true; | |
| 2282 jsr_pc = pc - Bytecodes::length_for(Bytecodes::_jsr_w); | |
| 2283 if (*jsr_pc == Bytecodes::_jsr_w && jsr_pc >= m->code_base()) return true; | |
| 2284 #endif // PRODUCT | |
| 2285 return false; | |
| 2286 } | |
| 2287 | |
| 2288 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { | |
| 2289 if (VerifyFPU) { | |
| 2290 unimplemented("verfiyFPU"); | |
| 2291 } | |
| 2292 } | |
| 2293 | |
| 2294 void InterpreterMacroAssembler::verify_oop_or_return_address(Register reg, Register Rtmp) { | |
| 2295 if (!VerifyOops) return; | |
| 2296 | |
| 2297 // The VM documentation for the astore[_wide] bytecode allows | |
| 2298 // the TOS to be not only an oop but also a return address. | |
| 2299 Label test; | |
| 2300 Label skip; | |
| 2301 // See if it is an address (in the current method): | |
| 2302 | |
| 2303 const int log2_bytecode_size_limit = 16; | |
| 2304 srdi_(Rtmp, reg, log2_bytecode_size_limit); | |
| 2305 bne(CCR0, test); | |
| 2306 | |
| 2307 address fd = CAST_FROM_FN_PTR(address, verify_return_address); | |
|
20710
c5e86c5cd22e
8066964: ppc64: argument and return type profiling, fix problem with popframe
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parents:
20508
diff
changeset
|
2308 const int nbytes_save = 11*8; // volatile gprs except R0 |
|
c5e86c5cd22e
8066964: ppc64: argument and return type profiling, fix problem with popframe
goetz
parents:
20508
diff
changeset
|
2309 save_volatile_gprs(R1_SP, -nbytes_save); // except R0 |
|
c5e86c5cd22e
8066964: ppc64: argument and return type profiling, fix problem with popframe
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parents:
20508
diff
changeset
|
2310 save_LR_CR(Rtmp); // Save in old frame. |
| 17804 | 2311 push_frame_reg_args(nbytes_save, Rtmp); |
| 2312 | |
| 2313 load_const_optimized(Rtmp, fd, R0); | |
| 2314 mr_if_needed(R4_ARG2, reg); | |
| 2315 mr(R3_ARG1, R19_method); | |
| 2316 call_c(Rtmp); // call C | |
| 2317 | |
| 2318 pop_frame(); | |
| 2319 restore_LR_CR(Rtmp); | |
|
20710
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parents:
20508
diff
changeset
|
2320 restore_volatile_gprs(R1_SP, -nbytes_save); // except R0 |
| 17804 | 2321 b(skip); |
| 2322 | |
| 2323 // Perform a more elaborate out-of-line call. | |
| 2324 // Not an address; verify it: | |
| 2325 bind(test); | |
| 2326 verify_oop(reg); | |
| 2327 bind(skip); | |
| 2328 } | |
| 2329 #endif // !CC_INTERP | |
| 2330 | |
|
14408
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parents:
diff
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|
2331 // Inline assembly for: |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
2332 // |
|
ec28f9c041ff
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parents:
diff
changeset
|
2333 // if (thread is in interp_only_mode) { |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2334 // InterpreterRuntime::post_method_entry(); |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2335 // } |
|
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parents:
diff
changeset
|
2336 // if (*jvmpi::event_flags_array_at_addr(JVMPI_EVENT_METHOD_ENTRY ) || |
|
ec28f9c041ff
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parents:
diff
changeset
|
2337 // *jvmpi::event_flags_array_at_addr(JVMPI_EVENT_METHOD_ENTRY2) ) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2338 // SharedRuntime::jvmpi_method_entry(method, receiver); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2339 // } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2340 void InterpreterMacroAssembler::notify_method_entry() { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2341 // JVMTI |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2342 // Whenever JVMTI puts a thread in interp_only_mode, method |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2343 // entry/exit events are sent for that thread to track stack |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2344 // depth. If it is possible to enter interp_only_mode we add |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2345 // the code to check if the event should be sent. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2346 if (JvmtiExport::can_post_interpreter_events()) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2347 Label jvmti_post_done; |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2348 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2349 lwz(R0, in_bytes(JavaThread::interp_only_mode_offset()), R16_thread); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2350 cmpwi(CCR0, R0, 0); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2351 beq(CCR0, jvmti_post_done); |
|
ec28f9c041ff
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goetz
parents:
diff
changeset
|
2352 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry), |
| 17804 | 2353 /*check_exceptions=*/true CC_INTERP_ONLY(&& false)); |
|
14408
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2354 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2355 bind(jvmti_post_done); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2356 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2357 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2358 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2359 // Inline assembly for: |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2360 // |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2361 // if (thread is in interp_only_mode) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2362 // // save result |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2363 // InterpreterRuntime::post_method_exit(); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2364 // // restore result |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2365 // } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2366 // if (*jvmpi::event_flags_array_at_addr(JVMPI_EVENT_METHOD_EXIT)) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2367 // // save result |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2368 // SharedRuntime::jvmpi_method_exit(); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2369 // // restore result |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2370 // } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2371 // |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2372 // Native methods have their result stored in d_tmp and l_tmp. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2373 // Java methods have their result stored in the expression stack. |
| 17804 | 2374 void InterpreterMacroAssembler::notify_method_exit(bool is_native_method, TosState state, |
| 2375 NotifyMethodExitMode mode, bool check_exceptions) { | |
|
14408
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goetz
parents:
diff
changeset
|
2376 // JVMTI |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2377 // Whenever JVMTI puts a thread in interp_only_mode, method |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2378 // entry/exit events are sent for that thread to track stack |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2379 // depth. If it is possible to enter interp_only_mode we add |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2380 // the code to check if the event should be sent. |
| 17804 | 2381 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) { |
|
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2382 Label jvmti_post_done; |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2383 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2384 lwz(R0, in_bytes(JavaThread::interp_only_mode_offset()), R16_thread); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2385 cmpwi(CCR0, R0, 0); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2386 beq(CCR0, jvmti_post_done); |
| 17804 | 2387 CC_INTERP_ONLY(assert(is_native_method && !check_exceptions, "must not push state")); |
| 2388 if (!is_native_method) push(state); // Expose tos to GC. | |
|
14408
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2389 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit), |
| 17804 | 2390 /*check_exceptions=*/check_exceptions); |
| 2391 if (!is_native_method) pop(state); | |
|
14408
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2392 |
| 14445 | 2393 align(32, 12); |
|
14408
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2394 bind(jvmti_post_done); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2395 } |
| 17804 | 2396 |
| 2397 // Dtrace support not implemented. | |
|
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2398 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2399 |
| 17804 | 2400 #ifdef CC_INTERP |
|
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2401 // Convert the current TOP_IJAVA_FRAME into a PARENT_IJAVA_FRAME |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2402 // (using parent_frame_resize) and push a new interpreter |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2403 // TOP_IJAVA_FRAME (using frame_size). |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2404 void InterpreterMacroAssembler::push_interpreter_frame(Register top_frame_size, Register parent_frame_resize, |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2405 Register tmp1, Register tmp2, Register tmp3, |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2406 Register tmp4, Register pc) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2407 assert_different_registers(top_frame_size, parent_frame_resize, tmp1, tmp2, tmp3, tmp4); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2408 ld(tmp1, _top_ijava_frame_abi(frame_manager_lr), R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2409 mr(tmp2/*top_frame_sp*/, R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2410 // Move initial_caller_sp. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2411 ld(tmp4, _top_ijava_frame_abi(initial_caller_sp), R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2412 neg(parent_frame_resize, parent_frame_resize); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2413 resize_frame(parent_frame_resize/*-parent_frame_resize*/, tmp3); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2414 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2415 // Set LR in new parent frame. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2416 std(tmp1, _abi(lr), R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2417 // Set top_frame_sp info for new parent frame. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2418 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
|
2419 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
|
2420 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2421 // Push new TOP_IJAVA_FRAME. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2422 push_frame(top_frame_size, tmp2); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2423 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2424 get_PC_trash_LR(tmp3); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2425 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
|
2426 // Used for non-initial callers by unextended_sp(). |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2427 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
|
2428 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2429 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2430 // 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
|
2431 // PARENT_IJAVA_FRAME back into a TOP_IJAVA_FRAME. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2432 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
|
2433 assert_different_registers(tmp1, tmp2, tmp3, tmp4); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2434 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2435 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
|
2436 ld(tmp3, _abi(lr), tmp1); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2437 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2438 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
|
2439 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2440 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
|
2441 // Merge top frame. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2442 std(tmp2, _abi(callers_sp), R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2443 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2444 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
|
2445 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2446 // Update C stack pointer to caller's top_abi. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2447 resize_frame_absolute(tmp2/*addr*/, tmp1/*tmp*/, tmp2/*tmp*/); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2448 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2449 // Update LR in top_frame. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2450 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
|
2451 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2452 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
|
2453 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2454 // Store the top-frame stack-pointer for c2i adapters. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2455 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
|
2456 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2457 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2458 // 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
|
2459 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
|
2460 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
|
2461 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2462 if (state == R14_state) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2463 ld(tmp1/*state's fp*/, state_(_last_Java_fp)); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2464 ld(tmp2/*state's sp*/, state_(_last_Java_sp)); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2465 } else if (state == R15_prev_state) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2466 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
|
2467 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
|
2468 } else { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2469 ShouldNotReachHere(); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2470 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2471 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2472 // Merge top frames. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2473 std(tmp1, _abi(callers_sp), R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2474 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2475 // Tmp2 is new SP. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2476 // Tmp1 is parent's SP. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2477 resize_frame_absolute(tmp2/*addr*/, tmp1/*tmp*/, tmp2/*tmp*/); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2478 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2479 // Update LR in top_frame. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2480 // Must be interpreter frame. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2481 get_PC_trash_LR(tmp3); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2482 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
|
2483 // Used for non-initial callers by unextended_sp(). |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2484 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
|
2485 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2486 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2487 // 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
|
2488 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
|
2489 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
|
2490 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
|
2491 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
|
2492 mr(R1_SP, tmp1); // ... and resize to initial caller. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2493 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2494 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2495 // Pop the current interpreter state (without popping the correspoding |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2496 // 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
|
2497 // 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
|
2498 // 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
|
2499 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
|
2500 { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2501 // 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
|
2502 Label prev_state_is_0; |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2503 mr(R14_state, R15_prev_state); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2504 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2505 // Don't retrieve /*state==*/prev_state_(_prev_link) |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2506 // if /*state==*/prev_state is 0. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2507 if (prev_state_may_be_0) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2508 cmpdi(CCR0, R15_prev_state, 0); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2509 beq(CCR0, prev_state_is_0); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2510 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2511 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2512 ld(R15_prev_state, /*state==*/prev_state_(_prev_link)); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2513 bind(prev_state_is_0); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2514 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2515 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2516 void InterpreterMacroAssembler::restore_prev_state() { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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2517 // _prev_link is private, but cInterpreter is a friend. |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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2518 ld(R15_prev_state, state_(_prev_link)); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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2519 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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2520 #endif // CC_INTERP |