Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 1 | /* |
Martin Doerr | 53821ff | 2015-01-12 11:14:49 +0100 | [diff] [blame] | 2 | * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved. |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 3 | * Copyright (c) 2012, 2015 SAP SE. All rights reserved. |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 4 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 5 | * |
| 6 | * This code is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License version 2 only, as |
| 8 | * published by the Free Software Foundation. |
| 9 | * |
| 10 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 13 | * version 2 for more details (a copy is included in the LICENSE file that |
| 14 | * accompanied this code). |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License version |
| 17 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 18 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 19 | * |
| 20 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| 21 | * or visit www.oracle.com if you need additional information or have any |
| 22 | * questions. |
| 23 | * |
| 24 | */ |
| 25 | |
| 26 | |
| 27 | #include "precompiled.hpp" |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 28 | #include "asm/macroAssembler.inline.hpp" |
| 29 | #include "interp_masm_ppc_64.hpp" |
| 30 | #include "interpreter/interpreterRuntime.hpp" |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 31 | #include "prims/jvmtiThreadState.hpp" |
Stefan Karlsson | c132a5a | 2015-02-10 17:16:17 +0100 | [diff] [blame] | 32 | #include "runtime/sharedRuntime.hpp" |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 33 | |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 34 | #ifdef PRODUCT |
| 35 | #define BLOCK_COMMENT(str) // nothing |
| 36 | #else |
| 37 | #define BLOCK_COMMENT(str) block_comment(str) |
| 38 | #endif |
| 39 | |
Goetz Lindenmaier | 7d56518 | 2013-12-11 00:06:11 +0100 | [diff] [blame] | 40 | void InterpreterMacroAssembler::null_check_throw(Register a, int offset, Register temp_reg) { |
Goetz Lindenmaier | 7d56518 | 2013-12-11 00:06:11 +0100 | [diff] [blame] | 41 | address exception_entry = Interpreter::throw_NullPointerException_entry(); |
Goetz Lindenmaier | 7d56518 | 2013-12-11 00:06:11 +0100 | [diff] [blame] | 42 | MacroAssembler::null_check_throw(a, offset, temp_reg, exception_entry); |
| 43 | } |
| 44 | |
Martin Doerr | 99c37e9 | 2015-09-17 09:03:57 +0200 | [diff] [blame] | 45 | void InterpreterMacroAssembler::jump_to_entry(address entry, Register Rscratch) { |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 46 | assert(entry, "Entry must have been generated by now"); |
| 47 | if (is_within_range_of_b(entry, pc())) { |
| 48 | b(entry); |
| 49 | } else { |
| 50 | load_const_optimized(Rscratch, entry, R0); |
| 51 | mtctr(Rscratch); |
| 52 | bctr(); |
| 53 | } |
| 54 | } |
| 55 | |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 56 | void InterpreterMacroAssembler::dispatch_next(TosState state, int bcp_incr) { |
| 57 | Register bytecode = R12_scratch2; |
| 58 | if (bcp_incr != 0) { |
| 59 | lbzu(bytecode, bcp_incr, R14_bcp); |
| 60 | } else { |
| 61 | lbz(bytecode, 0, R14_bcp); |
| 62 | } |
| 63 | |
| 64 | dispatch_Lbyte_code(state, bytecode, Interpreter::dispatch_table(state)); |
| 65 | } |
| 66 | |
| 67 | void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { |
| 68 | // Load current bytecode. |
| 69 | Register bytecode = R12_scratch2; |
| 70 | lbz(bytecode, 0, R14_bcp); |
| 71 | dispatch_Lbyte_code(state, bytecode, table); |
| 72 | } |
| 73 | |
| 74 | // Dispatch code executed in the prolog of a bytecode which does not do it's |
| 75 | // own dispatch. The dispatch address is computed and placed in R24_dispatch_addr. |
| 76 | void InterpreterMacroAssembler::dispatch_prolog(TosState state, int bcp_incr) { |
| 77 | Register bytecode = R12_scratch2; |
| 78 | lbz(bytecode, bcp_incr, R14_bcp); |
| 79 | |
| 80 | load_dispatch_table(R24_dispatch_addr, Interpreter::dispatch_table(state)); |
| 81 | |
| 82 | sldi(bytecode, bytecode, LogBytesPerWord); |
| 83 | ldx(R24_dispatch_addr, R24_dispatch_addr, bytecode); |
| 84 | } |
| 85 | |
| 86 | // Dispatch code executed in the epilog of a bytecode which does not do it's |
| 87 | // own dispatch. The dispatch address in R24_dispatch_addr is used for the |
| 88 | // dispatch. |
| 89 | void InterpreterMacroAssembler::dispatch_epilog(TosState state, int bcp_incr) { |
Martin Doerr | 8c5da27 | 2015-12-04 16:38:04 +0100 | [diff] [blame] | 90 | if (bcp_incr) { addi(R14_bcp, R14_bcp, bcp_incr); } |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 91 | mtctr(R24_dispatch_addr); |
Martin Doerr | 8c5da27 | 2015-12-04 16:38:04 +0100 | [diff] [blame] | 92 | bcctr(bcondAlways, 0, bhintbhBCCTRisNotPredictable); |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 93 | } |
| 94 | |
| 95 | void InterpreterMacroAssembler::check_and_handle_popframe(Register scratch_reg) { |
| 96 | assert(scratch_reg != R0, "can't use R0 as scratch_reg here"); |
| 97 | if (JvmtiExport::can_pop_frame()) { |
| 98 | Label L; |
| 99 | |
| 100 | // Check the "pending popframe condition" flag in the current thread. |
| 101 | lwz(scratch_reg, in_bytes(JavaThread::popframe_condition_offset()), R16_thread); |
| 102 | |
| 103 | // Initiate popframe handling only if it is not already being |
| 104 | // processed. If the flag has the popframe_processing bit set, it |
| 105 | // means that this code is called *during* popframe handling - we |
| 106 | // don't want to reenter. |
| 107 | andi_(R0, scratch_reg, JavaThread::popframe_pending_bit); |
| 108 | beq(CCR0, L); |
| 109 | |
| 110 | andi_(R0, scratch_reg, JavaThread::popframe_processing_bit); |
| 111 | bne(CCR0, L); |
| 112 | |
| 113 | // Call the Interpreter::remove_activation_preserving_args_entry() |
| 114 | // func to get the address of the same-named entrypoint in the |
| 115 | // generated interpreter code. |
Alexander Smundak | f8d5d70 | 2014-07-17 15:40:04 -0700 | [diff] [blame] | 116 | #if defined(ABI_ELFv2) |
| 117 | call_c(CAST_FROM_FN_PTR(address, |
| 118 | Interpreter::remove_activation_preserving_args_entry), |
| 119 | relocInfo::none); |
| 120 | #else |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 121 | call_c(CAST_FROM_FN_PTR(FunctionDescriptor*, |
| 122 | Interpreter::remove_activation_preserving_args_entry), |
| 123 | relocInfo::none); |
Alexander Smundak | f8d5d70 | 2014-07-17 15:40:04 -0700 | [diff] [blame] | 124 | #endif |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 125 | |
| 126 | // Jump to Interpreter::_remove_activation_preserving_args_entry. |
| 127 | mtctr(R3_RET); |
| 128 | bctr(); |
| 129 | |
| 130 | align(32, 12); |
| 131 | bind(L); |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | void InterpreterMacroAssembler::check_and_handle_earlyret(Register scratch_reg) { |
| 136 | const Register Rthr_state_addr = scratch_reg; |
| 137 | if (JvmtiExport::can_force_early_return()) { |
| 138 | Label Lno_early_ret; |
| 139 | ld(Rthr_state_addr, in_bytes(JavaThread::jvmti_thread_state_offset()), R16_thread); |
| 140 | cmpdi(CCR0, Rthr_state_addr, 0); |
| 141 | beq(CCR0, Lno_early_ret); |
| 142 | |
| 143 | lwz(R0, in_bytes(JvmtiThreadState::earlyret_state_offset()), Rthr_state_addr); |
| 144 | cmpwi(CCR0, R0, JvmtiThreadState::earlyret_pending); |
| 145 | bne(CCR0, Lno_early_ret); |
| 146 | |
| 147 | // Jump to Interpreter::_earlyret_entry. |
| 148 | lwz(R3_ARG1, in_bytes(JvmtiThreadState::earlyret_tos_offset()), Rthr_state_addr); |
| 149 | call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry)); |
| 150 | mtlr(R3_RET); |
| 151 | blr(); |
| 152 | |
| 153 | align(32, 12); |
| 154 | bind(Lno_early_ret); |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | void InterpreterMacroAssembler::load_earlyret_value(TosState state, Register Rscratch1) { |
| 159 | const Register RjvmtiState = Rscratch1; |
| 160 | const Register Rscratch2 = R0; |
| 161 | |
| 162 | ld(RjvmtiState, in_bytes(JavaThread::jvmti_thread_state_offset()), R16_thread); |
| 163 | li(Rscratch2, 0); |
| 164 | |
| 165 | switch (state) { |
| 166 | case atos: ld(R17_tos, in_bytes(JvmtiThreadState::earlyret_oop_offset()), RjvmtiState); |
| 167 | std(Rscratch2, in_bytes(JvmtiThreadState::earlyret_oop_offset()), RjvmtiState); |
| 168 | break; |
| 169 | case ltos: ld(R17_tos, in_bytes(JvmtiThreadState::earlyret_value_offset()), RjvmtiState); |
| 170 | break; |
| 171 | case btos: // fall through |
Martin Doerr | 2ee49b7 | 2016-04-22 10:46:08 +0200 | [diff] [blame] | 172 | case ztos: // fall through |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 173 | case ctos: // fall through |
| 174 | case stos: // fall through |
| 175 | case itos: lwz(R17_tos, in_bytes(JvmtiThreadState::earlyret_value_offset()), RjvmtiState); |
| 176 | break; |
| 177 | case ftos: lfs(F15_ftos, in_bytes(JvmtiThreadState::earlyret_value_offset()), RjvmtiState); |
| 178 | break; |
| 179 | case dtos: lfd(F15_ftos, in_bytes(JvmtiThreadState::earlyret_value_offset()), RjvmtiState); |
| 180 | break; |
| 181 | case vtos: break; |
| 182 | default : ShouldNotReachHere(); |
| 183 | } |
| 184 | |
| 185 | // Clean up tos value in the jvmti thread state. |
| 186 | std(Rscratch2, in_bytes(JvmtiThreadState::earlyret_value_offset()), RjvmtiState); |
| 187 | // Set tos state field to illegal value. |
| 188 | li(Rscratch2, ilgl); |
| 189 | stw(Rscratch2, in_bytes(JvmtiThreadState::earlyret_tos_offset()), RjvmtiState); |
| 190 | } |
| 191 | |
| 192 | // Common code to dispatch and dispatch_only. |
| 193 | // Dispatch value in Lbyte_code and increment Lbcp. |
| 194 | |
| 195 | void InterpreterMacroAssembler::load_dispatch_table(Register dst, address* table) { |
| 196 | address table_base = (address)Interpreter::dispatch_table((TosState)0); |
| 197 | intptr_t table_offs = (intptr_t)table - (intptr_t)table_base; |
| 198 | if (is_simm16(table_offs)) { |
| 199 | addi(dst, R25_templateTableBase, (int)table_offs); |
| 200 | } else { |
| 201 | load_const_optimized(dst, table, R0); |
| 202 | } |
| 203 | } |
| 204 | |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 205 | void InterpreterMacroAssembler::dispatch_Lbyte_code(TosState state, Register bytecode, |
| 206 | address* table, bool verify) { |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 207 | if (verify) { |
| 208 | unimplemented("dispatch_Lbyte_code: verify"); // See Sparc Implementation to implement this |
| 209 | } |
| 210 | |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 211 | assert_different_registers(bytecode, R11_scratch1); |
| 212 | |
| 213 | // Calc dispatch table address. |
| 214 | load_dispatch_table(R11_scratch1, table); |
| 215 | |
| 216 | sldi(R12_scratch2, bytecode, LogBytesPerWord); |
| 217 | ldx(R11_scratch1, R11_scratch1, R12_scratch2); |
| 218 | |
| 219 | // Jump off! |
| 220 | mtctr(R11_scratch1); |
Martin Doerr | 8c5da27 | 2015-12-04 16:38:04 +0100 | [diff] [blame] | 221 | bcctr(bcondAlways, 0, bhintbhBCCTRisNotPredictable); |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 222 | } |
| 223 | |
| 224 | void InterpreterMacroAssembler::load_receiver(Register Rparam_count, Register Rrecv_dst) { |
| 225 | sldi(Rrecv_dst, Rparam_count, Interpreter::logStackElementSize); |
| 226 | ldx(Rrecv_dst, Rrecv_dst, R15_esp); |
| 227 | } |
| 228 | |
| 229 | // helpers for expression stack |
| 230 | |
| 231 | void InterpreterMacroAssembler::pop_i(Register r) { |
| 232 | lwzu(r, Interpreter::stackElementSize, R15_esp); |
| 233 | } |
| 234 | |
| 235 | void InterpreterMacroAssembler::pop_ptr(Register r) { |
| 236 | ldu(r, Interpreter::stackElementSize, R15_esp); |
| 237 | } |
| 238 | |
| 239 | void InterpreterMacroAssembler::pop_l(Register r) { |
| 240 | ld(r, Interpreter::stackElementSize, R15_esp); |
| 241 | addi(R15_esp, R15_esp, 2 * Interpreter::stackElementSize); |
| 242 | } |
| 243 | |
| 244 | void InterpreterMacroAssembler::pop_f(FloatRegister f) { |
| 245 | lfsu(f, Interpreter::stackElementSize, R15_esp); |
| 246 | } |
| 247 | |
| 248 | void InterpreterMacroAssembler::pop_d(FloatRegister f) { |
| 249 | lfd(f, Interpreter::stackElementSize, R15_esp); |
| 250 | addi(R15_esp, R15_esp, 2 * Interpreter::stackElementSize); |
| 251 | } |
| 252 | |
| 253 | void InterpreterMacroAssembler::push_i(Register r) { |
| 254 | stw(r, 0, R15_esp); |
| 255 | addi(R15_esp, R15_esp, - Interpreter::stackElementSize ); |
| 256 | } |
| 257 | |
| 258 | void InterpreterMacroAssembler::push_ptr(Register r) { |
| 259 | std(r, 0, R15_esp); |
| 260 | addi(R15_esp, R15_esp, - Interpreter::stackElementSize ); |
| 261 | } |
| 262 | |
| 263 | void InterpreterMacroAssembler::push_l(Register r) { |
| 264 | std(r, - Interpreter::stackElementSize, R15_esp); |
| 265 | addi(R15_esp, R15_esp, - 2 * Interpreter::stackElementSize ); |
| 266 | } |
| 267 | |
| 268 | void InterpreterMacroAssembler::push_f(FloatRegister f) { |
| 269 | stfs(f, 0, R15_esp); |
| 270 | addi(R15_esp, R15_esp, - Interpreter::stackElementSize ); |
| 271 | } |
| 272 | |
| 273 | void InterpreterMacroAssembler::push_d(FloatRegister f) { |
| 274 | stfd(f, - Interpreter::stackElementSize, R15_esp); |
| 275 | addi(R15_esp, R15_esp, - 2 * Interpreter::stackElementSize ); |
| 276 | } |
| 277 | |
| 278 | void InterpreterMacroAssembler::push_2ptrs(Register first, Register second) { |
| 279 | std(first, 0, R15_esp); |
| 280 | std(second, -Interpreter::stackElementSize, R15_esp); |
| 281 | addi(R15_esp, R15_esp, - 2 * Interpreter::stackElementSize ); |
| 282 | } |
| 283 | |
| 284 | void InterpreterMacroAssembler::push_l_pop_d(Register l, FloatRegister d) { |
| 285 | std(l, 0, R15_esp); |
| 286 | lfd(d, 0, R15_esp); |
| 287 | } |
| 288 | |
| 289 | void InterpreterMacroAssembler::push_d_pop_l(FloatRegister d, Register l) { |
| 290 | stfd(d, 0, R15_esp); |
| 291 | ld(l, 0, R15_esp); |
| 292 | } |
| 293 | |
| 294 | void InterpreterMacroAssembler::push(TosState state) { |
| 295 | switch (state) { |
| 296 | case atos: push_ptr(); break; |
| 297 | case btos: |
Martin Doerr | 2ee49b7 | 2016-04-22 10:46:08 +0200 | [diff] [blame] | 298 | case ztos: |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 299 | case ctos: |
| 300 | case stos: |
| 301 | case itos: push_i(); break; |
| 302 | case ltos: push_l(); break; |
| 303 | case ftos: push_f(); break; |
| 304 | case dtos: push_d(); break; |
| 305 | case vtos: /* nothing to do */ break; |
| 306 | default : ShouldNotReachHere(); |
| 307 | } |
| 308 | } |
| 309 | |
| 310 | void InterpreterMacroAssembler::pop(TosState state) { |
| 311 | switch (state) { |
| 312 | case atos: pop_ptr(); break; |
| 313 | case btos: |
Martin Doerr | 2ee49b7 | 2016-04-22 10:46:08 +0200 | [diff] [blame] | 314 | case ztos: |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 315 | case ctos: |
| 316 | case stos: |
| 317 | case itos: pop_i(); break; |
| 318 | case ltos: pop_l(); break; |
| 319 | case ftos: pop_f(); break; |
| 320 | case dtos: pop_d(); break; |
| 321 | case vtos: /* nothing to do */ break; |
| 322 | default : ShouldNotReachHere(); |
| 323 | } |
| 324 | verify_oop(R17_tos, state); |
| 325 | } |
| 326 | |
| 327 | void InterpreterMacroAssembler::empty_expression_stack() { |
| 328 | addi(R15_esp, R26_monitor, - Interpreter::stackElementSize); |
| 329 | } |
| 330 | |
| 331 | void InterpreterMacroAssembler::get_2_byte_integer_at_bcp(int bcp_offset, |
| 332 | Register Rdst, |
| 333 | signedOrNot is_signed) { |
Alexander Smundak | f8d5d70 | 2014-07-17 15:40:04 -0700 | [diff] [blame] | 334 | #if defined(VM_LITTLE_ENDIAN) |
| 335 | if (bcp_offset) { |
| 336 | load_const_optimized(Rdst, bcp_offset); |
| 337 | lhbrx(Rdst, R14_bcp, Rdst); |
| 338 | } else { |
| 339 | lhbrx(Rdst, R14_bcp); |
| 340 | } |
| 341 | if (is_signed == Signed) { |
| 342 | extsh(Rdst, Rdst); |
| 343 | } |
| 344 | #else |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 345 | // Read Java big endian format. |
| 346 | if (is_signed == Signed) { |
| 347 | lha(Rdst, bcp_offset, R14_bcp); |
| 348 | } else { |
| 349 | lhz(Rdst, bcp_offset, R14_bcp); |
| 350 | } |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 351 | #endif |
| 352 | } |
| 353 | |
| 354 | void InterpreterMacroAssembler::get_4_byte_integer_at_bcp(int bcp_offset, |
| 355 | Register Rdst, |
| 356 | signedOrNot is_signed) { |
Alexander Smundak | f8d5d70 | 2014-07-17 15:40:04 -0700 | [diff] [blame] | 357 | #if defined(VM_LITTLE_ENDIAN) |
| 358 | if (bcp_offset) { |
| 359 | load_const_optimized(Rdst, bcp_offset); |
| 360 | lwbrx(Rdst, R14_bcp, Rdst); |
| 361 | } else { |
| 362 | lwbrx(Rdst, R14_bcp); |
| 363 | } |
| 364 | if (is_signed == Signed) { |
| 365 | extsw(Rdst, Rdst); |
| 366 | } |
| 367 | #else |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 368 | // Read Java big endian format. |
| 369 | if (bcp_offset & 3) { // Offset unaligned? |
| 370 | load_const_optimized(Rdst, bcp_offset); |
| 371 | if (is_signed == Signed) { |
| 372 | lwax(Rdst, R14_bcp, Rdst); |
| 373 | } else { |
| 374 | lwzx(Rdst, R14_bcp, Rdst); |
| 375 | } |
| 376 | } else { |
| 377 | if (is_signed == Signed) { |
| 378 | lwa(Rdst, bcp_offset, R14_bcp); |
| 379 | } else { |
| 380 | lwz(Rdst, bcp_offset, R14_bcp); |
| 381 | } |
| 382 | } |
Alexander Smundak | f8d5d70 | 2014-07-17 15:40:04 -0700 | [diff] [blame] | 383 | #endif |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 384 | } |
| 385 | |
Alexander Smundak | f8d5d70 | 2014-07-17 15:40:04 -0700 | [diff] [blame] | 386 | |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 387 | // Load the constant pool cache index from the bytecode stream. |
| 388 | // |
| 389 | // Kills / writes: |
| 390 | // - Rdst, Rscratch |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 391 | void InterpreterMacroAssembler::get_cache_index_at_bcp(Register Rdst, int bcp_offset, |
| 392 | size_t index_size) { |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 393 | assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); |
Alexander Smundak | f8d5d70 | 2014-07-17 15:40:04 -0700 | [diff] [blame] | 394 | // Cache index is always in the native format, courtesy of Rewriter. |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 395 | if (index_size == sizeof(u2)) { |
Alexander Smundak | f8d5d70 | 2014-07-17 15:40:04 -0700 | [diff] [blame] | 396 | lhz(Rdst, bcp_offset, R14_bcp); |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 397 | } else if (index_size == sizeof(u4)) { |
Alexander Smundak | f8d5d70 | 2014-07-17 15:40:04 -0700 | [diff] [blame] | 398 | if (bcp_offset & 3) { |
| 399 | load_const_optimized(Rdst, bcp_offset); |
| 400 | lwax(Rdst, R14_bcp, Rdst); |
| 401 | } else { |
| 402 | lwa(Rdst, bcp_offset, R14_bcp); |
| 403 | } |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 404 | assert(ConstantPool::decode_invokedynamic_index(~123) == 123, "else change next line"); |
| 405 | nand(Rdst, Rdst, Rdst); // convert to plain index |
| 406 | } else if (index_size == sizeof(u1)) { |
| 407 | lbz(Rdst, bcp_offset, R14_bcp); |
| 408 | } else { |
| 409 | ShouldNotReachHere(); |
| 410 | } |
| 411 | // Rdst now contains cp cache index. |
| 412 | } |
| 413 | |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 414 | void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, int bcp_offset, |
| 415 | size_t index_size) { |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 416 | get_cache_index_at_bcp(cache, bcp_offset, index_size); |
| 417 | sldi(cache, cache, exact_log2(in_words(ConstantPoolCacheEntry::size()) * BytesPerWord)); |
| 418 | add(cache, R27_constPoolCache, cache); |
| 419 | } |
| 420 | |
Alexander Smundak | f8d5d70 | 2014-07-17 15:40:04 -0700 | [diff] [blame] | 421 | // Load 4-byte signed or unsigned integer in Java format (that is, big-endian format) |
| 422 | // from (Rsrc)+offset. |
| 423 | void InterpreterMacroAssembler::get_u4(Register Rdst, Register Rsrc, int offset, |
| 424 | signedOrNot is_signed) { |
| 425 | #if defined(VM_LITTLE_ENDIAN) |
| 426 | if (offset) { |
| 427 | load_const_optimized(Rdst, offset); |
| 428 | lwbrx(Rdst, Rdst, Rsrc); |
| 429 | } else { |
| 430 | lwbrx(Rdst, Rsrc); |
| 431 | } |
| 432 | if (is_signed == Signed) { |
| 433 | extsw(Rdst, Rdst); |
| 434 | } |
| 435 | #else |
| 436 | if (is_signed == Signed) { |
| 437 | lwa(Rdst, offset, Rsrc); |
| 438 | } else { |
| 439 | lwz(Rdst, offset, Rsrc); |
| 440 | } |
| 441 | #endif |
| 442 | } |
| 443 | |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 444 | // Load object from cpool->resolved_references(index). |
Goetz Lindenmaier | 5827e6c | 2015-04-15 12:44:56 +0200 | [diff] [blame] | 445 | void InterpreterMacroAssembler::load_resolved_reference_at_index(Register result, Register index, Label *is_null) { |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 446 | assert_different_registers(result, index); |
| 447 | get_constant_pool(result); |
| 448 | |
| 449 | // Convert from field index to resolved_references() index and from |
| 450 | // word index to byte offset. Since this is a java object, it can be compressed. |
| 451 | Register tmp = index; // reuse |
| 452 | sldi(tmp, index, LogBytesPerHeapOop); |
| 453 | // Load pointer for resolved_references[] objArray. |
| 454 | ld(result, ConstantPool::resolved_references_offset_in_bytes(), result); |
| 455 | // JNIHandles::resolve(result) |
| 456 | ld(result, 0, result); |
| 457 | #ifdef ASSERT |
| 458 | Label index_ok; |
| 459 | lwa(R0, arrayOopDesc::length_offset_in_bytes(), result); |
| 460 | sldi(R0, R0, LogBytesPerHeapOop); |
| 461 | cmpd(CCR0, tmp, R0); |
| 462 | blt(CCR0, index_ok); |
| 463 | stop("resolved reference index out of bounds", 0x09256); |
| 464 | bind(index_ok); |
| 465 | #endif |
| 466 | // Add in the index. |
| 467 | add(result, tmp, result); |
Goetz Lindenmaier | 5827e6c | 2015-04-15 12:44:56 +0200 | [diff] [blame] | 468 | load_heap_oop(result, arrayOopDesc::base_offset_in_bytes(T_OBJECT), result, is_null); |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 469 | } |
| 470 | |
| 471 | // Generate a subtype check: branch to ok_is_subtype if sub_klass is |
| 472 | // a subtype of super_klass. Blows registers Rsub_klass, tmp1, tmp2. |
| 473 | void InterpreterMacroAssembler::gen_subtype_check(Register Rsub_klass, Register Rsuper_klass, Register Rtmp1, |
| 474 | Register Rtmp2, Register Rtmp3, Label &ok_is_subtype) { |
| 475 | // Profile the not-null value's klass. |
| 476 | profile_typecheck(Rsub_klass, Rtmp1, Rtmp2); |
| 477 | check_klass_subtype(Rsub_klass, Rsuper_klass, Rtmp1, Rtmp2, ok_is_subtype); |
| 478 | profile_typecheck_failed(Rtmp1, Rtmp2); |
| 479 | } |
| 480 | |
| 481 | void InterpreterMacroAssembler::generate_stack_overflow_check_with_compare_and_throw(Register Rmem_frame_size, Register Rscratch1) { |
| 482 | Label done; |
| 483 | sub(Rmem_frame_size, R1_SP, Rmem_frame_size); |
| 484 | ld(Rscratch1, thread_(stack_overflow_limit)); |
| 485 | cmpld(CCR0/*is_stack_overflow*/, Rmem_frame_size, Rscratch1); |
| 486 | bgt(CCR0/*is_stack_overflow*/, done); |
| 487 | |
| 488 | // Load target address of the runtime stub. |
| 489 | assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "generated in wrong order"); |
| 490 | load_const_optimized(Rscratch1, (StubRoutines::throw_StackOverflowError_entry()), R0); |
| 491 | mtctr(Rscratch1); |
| 492 | // Restore caller_sp. |
| 493 | #ifdef ASSERT |
| 494 | ld(Rscratch1, 0, R1_SP); |
| 495 | ld(R0, 0, R21_sender_SP); |
| 496 | cmpd(CCR0, R0, Rscratch1); |
| 497 | asm_assert_eq("backlink", 0x547); |
| 498 | #endif // ASSERT |
| 499 | mr(R1_SP, R21_sender_SP); |
| 500 | bctr(); |
| 501 | |
| 502 | align(32, 12); |
| 503 | bind(done); |
| 504 | } |
| 505 | |
| 506 | // Separate these two to allow for delay slot in middle. |
| 507 | // These are used to do a test and full jump to exception-throwing code. |
| 508 | |
| 509 | // Check that index is in range for array, then shift index by index_shift, |
| 510 | // and put arrayOop + shifted_index into res. |
| 511 | // Note: res is still shy of address by array offset into object. |
| 512 | |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 513 | void InterpreterMacroAssembler::index_check_without_pop(Register Rarray, Register Rindex, |
| 514 | int index_shift, Register Rtmp, Register Rres) { |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 515 | // Check that index is in range for array, then shift index by index_shift, |
| 516 | // and put arrayOop + shifted_index into res. |
| 517 | // Note: res is still shy of address by array offset into object. |
| 518 | // Kills: |
| 519 | // - Rindex |
| 520 | // Writes: |
| 521 | // - Rres: Address that corresponds to the array index if check was successful. |
| 522 | verify_oop(Rarray); |
| 523 | const Register Rlength = R0; |
| 524 | const Register RsxtIndex = Rtmp; |
| 525 | Label LisNull, LnotOOR; |
| 526 | |
| 527 | // Array nullcheck |
| 528 | if (!ImplicitNullChecks) { |
| 529 | cmpdi(CCR0, Rarray, 0); |
| 530 | beq(CCR0, LisNull); |
| 531 | } else { |
| 532 | null_check_throw(Rarray, arrayOopDesc::length_offset_in_bytes(), /*temp*/RsxtIndex); |
| 533 | } |
| 534 | |
| 535 | // Rindex might contain garbage in upper bits (remember that we don't sign extend |
| 536 | // during integer arithmetic operations). So kill them and put value into same register |
| 537 | // where ArrayIndexOutOfBounds would expect the index in. |
| 538 | rldicl(RsxtIndex, Rindex, 0, 32); // zero extend 32 bit -> 64 bit |
| 539 | |
| 540 | // Index check |
| 541 | lwz(Rlength, arrayOopDesc::length_offset_in_bytes(), Rarray); |
| 542 | cmplw(CCR0, Rindex, Rlength); |
| 543 | sldi(RsxtIndex, RsxtIndex, index_shift); |
| 544 | blt(CCR0, LnotOOR); |
Goetz Lindenmaier | 46714a7 | 2014-12-09 11:57:46 +0100 | [diff] [blame] | 545 | // Index should be in R17_tos, array should be in R4_ARG2. |
Martin Doerr | 8c5da27 | 2015-12-04 16:38:04 +0100 | [diff] [blame] | 546 | mr_if_needed(R17_tos, Rindex); |
| 547 | mr_if_needed(R4_ARG2, Rarray); |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 548 | load_dispatch_table(Rtmp, (address*)Interpreter::_throw_ArrayIndexOutOfBoundsException_entry); |
| 549 | mtctr(Rtmp); |
| 550 | bctr(); |
| 551 | |
| 552 | if (!ImplicitNullChecks) { |
| 553 | bind(LisNull); |
| 554 | load_dispatch_table(Rtmp, (address*)Interpreter::_throw_NullPointerException_entry); |
| 555 | mtctr(Rtmp); |
| 556 | bctr(); |
| 557 | } |
| 558 | |
| 559 | align(32, 16); |
| 560 | bind(LnotOOR); |
| 561 | |
| 562 | // Calc address |
| 563 | add(Rres, RsxtIndex, Rarray); |
| 564 | } |
| 565 | |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 566 | void InterpreterMacroAssembler::index_check(Register array, Register index, |
| 567 | int index_shift, Register tmp, Register res) { |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 568 | // pop array |
| 569 | pop_ptr(array); |
| 570 | |
| 571 | // check array |
| 572 | index_check_without_pop(array, index, index_shift, tmp, res); |
| 573 | } |
| 574 | |
| 575 | void InterpreterMacroAssembler::get_const(Register Rdst) { |
| 576 | ld(Rdst, in_bytes(Method::const_offset()), R19_method); |
| 577 | } |
| 578 | |
| 579 | void InterpreterMacroAssembler::get_constant_pool(Register Rdst) { |
| 580 | get_const(Rdst); |
| 581 | ld(Rdst, in_bytes(ConstMethod::constants_offset()), Rdst); |
| 582 | } |
| 583 | |
| 584 | void InterpreterMacroAssembler::get_constant_pool_cache(Register Rdst) { |
| 585 | get_constant_pool(Rdst); |
| 586 | ld(Rdst, ConstantPool::cache_offset_in_bytes(), Rdst); |
| 587 | } |
| 588 | |
| 589 | void InterpreterMacroAssembler::get_cpool_and_tags(Register Rcpool, Register Rtags) { |
| 590 | get_constant_pool(Rcpool); |
| 591 | ld(Rtags, ConstantPool::tags_offset_in_bytes(), Rcpool); |
| 592 | } |
| 593 | |
| 594 | // Unlock if synchronized method. |
| 595 | // |
| 596 | // Unlock the receiver if this is a synchronized method. |
| 597 | // Unlock any Java monitors from synchronized blocks. |
| 598 | // |
| 599 | // If there are locked Java monitors |
| 600 | // If throw_monitor_exception |
| 601 | // throws IllegalMonitorStateException |
| 602 | // Else if install_monitor_exception |
| 603 | // installs IllegalMonitorStateException |
| 604 | // Else |
| 605 | // no error processing |
| 606 | void InterpreterMacroAssembler::unlock_if_synchronized_method(TosState state, |
| 607 | bool throw_monitor_exception, |
| 608 | bool install_monitor_exception) { |
| 609 | Label Lunlocked, Lno_unlock; |
| 610 | { |
| 611 | Register Rdo_not_unlock_flag = R11_scratch1; |
| 612 | Register Raccess_flags = R12_scratch2; |
| 613 | |
| 614 | // Check if synchronized method or unlocking prevented by |
| 615 | // JavaThread::do_not_unlock_if_synchronized flag. |
| 616 | lbz(Rdo_not_unlock_flag, in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()), R16_thread); |
| 617 | lwz(Raccess_flags, in_bytes(Method::access_flags_offset()), R19_method); |
| 618 | li(R0, 0); |
| 619 | stb(R0, in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()), R16_thread); // reset flag |
| 620 | |
| 621 | push(state); |
| 622 | |
| 623 | // Skip if we don't have to unlock. |
| 624 | rldicl_(R0, Raccess_flags, 64-JVM_ACC_SYNCHRONIZED_BIT, 63); // Extract bit and compare to 0. |
| 625 | beq(CCR0, Lunlocked); |
| 626 | |
| 627 | cmpwi(CCR0, Rdo_not_unlock_flag, 0); |
| 628 | bne(CCR0, Lno_unlock); |
| 629 | } |
| 630 | |
| 631 | // Unlock |
| 632 | { |
| 633 | Register Rmonitor_base = R11_scratch1; |
| 634 | |
| 635 | Label Lunlock; |
| 636 | // If it's still locked, everything is ok, unlock it. |
| 637 | ld(Rmonitor_base, 0, R1_SP); |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 638 | addi(Rmonitor_base, Rmonitor_base, |
| 639 | -(frame::ijava_state_size + frame::interpreter_frame_monitor_size_in_bytes())); // Monitor base |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 640 | |
| 641 | ld(R0, BasicObjectLock::obj_offset_in_bytes(), Rmonitor_base); |
| 642 | cmpdi(CCR0, R0, 0); |
| 643 | bne(CCR0, Lunlock); |
| 644 | |
| 645 | // If it's already unlocked, throw exception. |
| 646 | if (throw_monitor_exception) { |
| 647 | call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); |
| 648 | should_not_reach_here(); |
| 649 | } else { |
| 650 | if (install_monitor_exception) { |
| 651 | call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); |
| 652 | b(Lunlocked); |
| 653 | } |
| 654 | } |
| 655 | |
| 656 | bind(Lunlock); |
| 657 | unlock_object(Rmonitor_base); |
| 658 | } |
| 659 | |
| 660 | // Check that all other monitors are unlocked. Throw IllegelMonitorState exception if not. |
| 661 | bind(Lunlocked); |
| 662 | { |
| 663 | Label Lexception, Lrestart; |
| 664 | Register Rcurrent_obj_addr = R11_scratch1; |
| 665 | const int delta = frame::interpreter_frame_monitor_size_in_bytes(); |
| 666 | assert((delta & LongAlignmentMask) == 0, "sizeof BasicObjectLock must be even number of doublewords"); |
| 667 | |
| 668 | bind(Lrestart); |
| 669 | // Set up search loop: Calc num of iterations. |
| 670 | { |
| 671 | Register Riterations = R12_scratch2; |
| 672 | Register Rmonitor_base = Rcurrent_obj_addr; |
| 673 | ld(Rmonitor_base, 0, R1_SP); |
| 674 | addi(Rmonitor_base, Rmonitor_base, - frame::ijava_state_size); // Monitor base |
| 675 | |
| 676 | subf_(Riterations, R26_monitor, Rmonitor_base); |
| 677 | ble(CCR0, Lno_unlock); |
| 678 | |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 679 | addi(Rcurrent_obj_addr, Rmonitor_base, |
| 680 | BasicObjectLock::obj_offset_in_bytes() - frame::interpreter_frame_monitor_size_in_bytes()); |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 681 | // Check if any monitor is on stack, bail out if not |
| 682 | srdi(Riterations, Riterations, exact_log2(delta)); |
| 683 | mtctr(Riterations); |
| 684 | } |
| 685 | |
| 686 | // The search loop: Look for locked monitors. |
| 687 | { |
| 688 | const Register Rcurrent_obj = R0; |
| 689 | Label Lloop; |
| 690 | |
| 691 | ld(Rcurrent_obj, 0, Rcurrent_obj_addr); |
| 692 | addi(Rcurrent_obj_addr, Rcurrent_obj_addr, -delta); |
| 693 | bind(Lloop); |
| 694 | |
| 695 | // Check if current entry is used. |
| 696 | cmpdi(CCR0, Rcurrent_obj, 0); |
| 697 | bne(CCR0, Lexception); |
| 698 | // Preload next iteration's compare value. |
| 699 | ld(Rcurrent_obj, 0, Rcurrent_obj_addr); |
| 700 | addi(Rcurrent_obj_addr, Rcurrent_obj_addr, -delta); |
| 701 | bdnz(Lloop); |
| 702 | } |
| 703 | // Fell through: Everything's unlocked => finish. |
| 704 | b(Lno_unlock); |
| 705 | |
| 706 | // An object is still locked => need to throw exception. |
| 707 | bind(Lexception); |
| 708 | if (throw_monitor_exception) { |
| 709 | call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); |
| 710 | should_not_reach_here(); |
| 711 | } else { |
| 712 | // Stack unrolling. Unlock object and if requested, install illegal_monitor_exception. |
| 713 | // Unlock does not block, so don't have to worry about the frame. |
| 714 | Register Rmonitor_addr = R11_scratch1; |
| 715 | addi(Rmonitor_addr, Rcurrent_obj_addr, -BasicObjectLock::obj_offset_in_bytes() + delta); |
| 716 | unlock_object(Rmonitor_addr); |
| 717 | if (install_monitor_exception) { |
| 718 | call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); |
| 719 | } |
| 720 | b(Lrestart); |
| 721 | } |
| 722 | } |
| 723 | |
| 724 | align(32, 12); |
| 725 | bind(Lno_unlock); |
| 726 | pop(state); |
| 727 | } |
| 728 | |
| 729 | // Support function for remove_activation & Co. |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 730 | void InterpreterMacroAssembler::merge_frames(Register Rsender_sp, Register return_pc, |
| 731 | Register Rscratch1, Register Rscratch2) { |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 732 | // Pop interpreter frame. |
| 733 | ld(Rscratch1, 0, R1_SP); // *SP |
| 734 | ld(Rsender_sp, _ijava_state_neg(sender_sp), Rscratch1); // top_frame_sp |
| 735 | ld(Rscratch2, 0, Rscratch1); // **SP |
| 736 | #ifdef ASSERT |
| 737 | { |
| 738 | Label Lok; |
| 739 | ld(R0, _ijava_state_neg(ijava_reserved), Rscratch1); |
| 740 | cmpdi(CCR0, R0, 0x5afe); |
| 741 | beq(CCR0, Lok); |
| 742 | stop("frame corrupted (remove activation)", 0x5afe); |
| 743 | bind(Lok); |
| 744 | } |
| 745 | #endif |
| 746 | if (return_pc!=noreg) { |
| 747 | ld(return_pc, _abi(lr), Rscratch1); // LR |
| 748 | } |
| 749 | |
| 750 | // Merge top frames. |
| 751 | subf(Rscratch1, R1_SP, Rsender_sp); // top_frame_sp - SP |
| 752 | stdux(Rscratch2, R1_SP, Rscratch1); // atomically set *(SP = top_frame_sp) = **SP |
| 753 | } |
| 754 | |
Martin Doerr | 2ee49b7 | 2016-04-22 10:46:08 +0200 | [diff] [blame] | 755 | void InterpreterMacroAssembler::narrow(Register result) { |
| 756 | Register ret_type = R11_scratch1; |
| 757 | ld(R11_scratch1, in_bytes(Method::const_offset()), R19_method); |
| 758 | lbz(ret_type, in_bytes(ConstMethod::result_type_offset()), R11_scratch1); |
| 759 | |
| 760 | Label notBool, notByte, notChar, done; |
| 761 | |
| 762 | // common case first |
| 763 | cmpwi(CCR0, ret_type, T_INT); |
| 764 | beq(CCR0, done); |
| 765 | |
| 766 | cmpwi(CCR0, ret_type, T_BOOLEAN); |
| 767 | bne(CCR0, notBool); |
| 768 | andi(result, result, 0x1); |
| 769 | b(done); |
| 770 | |
| 771 | bind(notBool); |
| 772 | cmpwi(CCR0, ret_type, T_BYTE); |
| 773 | bne(CCR0, notByte); |
| 774 | extsb(result, result); |
| 775 | b(done); |
| 776 | |
| 777 | bind(notByte); |
| 778 | cmpwi(CCR0, ret_type, T_CHAR); |
| 779 | bne(CCR0, notChar); |
| 780 | andi(result, result, 0xffff); |
| 781 | b(done); |
| 782 | |
| 783 | bind(notChar); |
| 784 | // cmpwi(CCR0, ret_type, T_SHORT); // all that's left |
| 785 | // bne(CCR0, done); |
| 786 | extsh(result, result); |
| 787 | |
| 788 | // Nothing to do for T_INT |
| 789 | bind(done); |
| 790 | } |
| 791 | |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 792 | // Remove activation. |
| 793 | // |
| 794 | // Unlock the receiver if this is a synchronized method. |
| 795 | // Unlock any Java monitors from synchronized blocks. |
| 796 | // Remove the activation from the stack. |
| 797 | // |
| 798 | // If there are locked Java monitors |
| 799 | // If throw_monitor_exception |
| 800 | // throws IllegalMonitorStateException |
| 801 | // Else if install_monitor_exception |
| 802 | // installs IllegalMonitorStateException |
| 803 | // Else |
| 804 | // no error processing |
| 805 | void InterpreterMacroAssembler::remove_activation(TosState state, |
| 806 | bool throw_monitor_exception, |
| 807 | bool install_monitor_exception) { |
| 808 | unlock_if_synchronized_method(state, throw_monitor_exception, install_monitor_exception); |
| 809 | |
| 810 | // Save result (push state before jvmti call and pop it afterwards) and notify jvmti. |
| 811 | notify_method_exit(false, state, NotifyJVMTI, true); |
| 812 | |
| 813 | verify_oop(R17_tos, state); |
| 814 | verify_thread(); |
| 815 | |
| 816 | merge_frames(/*top_frame_sp*/ R21_sender_SP, /*return_pc*/ R0, R11_scratch1, R12_scratch2); |
| 817 | mtlr(R0); |
| 818 | } |
| 819 | |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 820 | // Lock object |
| 821 | // |
| 822 | // Registers alive |
| 823 | // monitor - Address of the BasicObjectLock to be used for locking, |
| 824 | // which must be initialized with the object to lock. |
| 825 | // object - Address of the object to be locked. |
| 826 | // |
| 827 | void InterpreterMacroAssembler::lock_object(Register monitor, Register object) { |
| 828 | if (UseHeavyMonitors) { |
| 829 | call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 830 | monitor, /*check_for_exceptions=*/true); |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 831 | } else { |
| 832 | // template code: |
| 833 | // |
| 834 | // markOop displaced_header = obj->mark().set_unlocked(); |
| 835 | // monitor->lock()->set_displaced_header(displaced_header); |
| 836 | // if (Atomic::cmpxchg_ptr(/*ex=*/monitor, /*addr*/obj->mark_addr(), /*cmp*/displaced_header) == displaced_header) { |
| 837 | // // We stored the monitor address into the object's mark word. |
| 838 | // } else if (THREAD->is_lock_owned((address)displaced_header)) |
| 839 | // // Simple recursive case. |
| 840 | // monitor->lock()->set_displaced_header(NULL); |
| 841 | // } else { |
| 842 | // // Slow path. |
| 843 | // InterpreterRuntime::monitorenter(THREAD, monitor); |
| 844 | // } |
| 845 | |
| 846 | const Register displaced_header = R7_ARG5; |
| 847 | const Register object_mark_addr = R8_ARG6; |
| 848 | const Register current_header = R9_ARG7; |
| 849 | const Register tmp = R10_ARG8; |
| 850 | |
| 851 | Label done; |
Goetz Lindenmaier | 7d56518 | 2013-12-11 00:06:11 +0100 | [diff] [blame] | 852 | Label cas_failed, slow_case; |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 853 | |
| 854 | assert_different_registers(displaced_header, object_mark_addr, current_header, tmp); |
| 855 | |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 856 | // markOop displaced_header = obj->mark().set_unlocked(); |
| 857 | |
| 858 | // Load markOop from object into displaced_header. |
| 859 | ld(displaced_header, oopDesc::mark_offset_in_bytes(), object); |
| 860 | |
| 861 | if (UseBiasedLocking) { |
| 862 | biased_locking_enter(CCR0, object, displaced_header, tmp, current_header, done, &slow_case); |
| 863 | } |
| 864 | |
| 865 | // Set displaced_header to be (markOop of object | UNLOCK_VALUE). |
| 866 | ori(displaced_header, displaced_header, markOopDesc::unlocked_value); |
| 867 | |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 868 | // monitor->lock()->set_displaced_header(displaced_header); |
| 869 | |
| 870 | // Initialize the box (Must happen before we update the object mark!). |
| 871 | std(displaced_header, BasicObjectLock::lock_offset_in_bytes() + |
Goetz Lindenmaier | 7d56518 | 2013-12-11 00:06:11 +0100 | [diff] [blame] | 872 | BasicLock::displaced_header_offset_in_bytes(), monitor); |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 873 | |
| 874 | // if (Atomic::cmpxchg_ptr(/*ex=*/monitor, /*addr*/obj->mark_addr(), /*cmp*/displaced_header) == displaced_header) { |
| 875 | |
| 876 | // Store stack address of the BasicObjectLock (this is monitor) into object. |
| 877 | addi(object_mark_addr, object, oopDesc::mark_offset_in_bytes()); |
| 878 | |
| 879 | // Must fence, otherwise, preceding store(s) may float below cmpxchg. |
| 880 | // CmpxchgX sets CCR0 to cmpX(current, displaced). |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 881 | cmpxchgd(/*flag=*/CCR0, |
| 882 | /*current_value=*/current_header, |
| 883 | /*compare_value=*/displaced_header, /*exchange_value=*/monitor, |
| 884 | /*where=*/object_mark_addr, |
| 885 | MacroAssembler::MemBarRel | MacroAssembler::MemBarAcq, |
Goetz Lindenmaier | 7d56518 | 2013-12-11 00:06:11 +0100 | [diff] [blame] | 886 | MacroAssembler::cmpxchgx_hint_acquire_lock(), |
| 887 | noreg, |
Martin Doerr | 8c5da27 | 2015-12-04 16:38:04 +0100 | [diff] [blame] | 888 | &cas_failed, |
| 889 | /*check without membar and ldarx first*/true); |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 890 | |
| 891 | // If the compare-and-exchange succeeded, then we found an unlocked |
| 892 | // object and we have now locked it. |
Goetz Lindenmaier | 7d56518 | 2013-12-11 00:06:11 +0100 | [diff] [blame] | 893 | b(done); |
| 894 | bind(cas_failed); |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 895 | |
| 896 | // } else if (THREAD->is_lock_owned((address)displaced_header)) |
| 897 | // // Simple recursive case. |
| 898 | // monitor->lock()->set_displaced_header(NULL); |
| 899 | |
| 900 | // We did not see an unlocked object so try the fast recursive case. |
| 901 | |
| 902 | // Check if owner is self by comparing the value in the markOop of object |
| 903 | // (current_header) with the stack pointer. |
| 904 | sub(current_header, current_header, R1_SP); |
| 905 | |
| 906 | assert(os::vm_page_size() > 0xfff, "page size too small - change the constant"); |
Martin Doerr | 8c5da27 | 2015-12-04 16:38:04 +0100 | [diff] [blame] | 907 | load_const_optimized(tmp, ~(os::vm_page_size()-1) | markOopDesc::lock_mask_in_place); |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 908 | |
| 909 | and_(R0/*==0?*/, current_header, tmp); |
| 910 | // If condition is true we are done and hence we can store 0 in the displaced |
| 911 | // header indicating it is a recursive lock. |
| 912 | bne(CCR0, slow_case); |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 913 | std(R0/*==0!*/, BasicObjectLock::lock_offset_in_bytes() + |
Goetz Lindenmaier | 7d56518 | 2013-12-11 00:06:11 +0100 | [diff] [blame] | 914 | BasicLock::displaced_header_offset_in_bytes(), monitor); |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 915 | b(done); |
| 916 | |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 917 | // } else { |
| 918 | // // Slow path. |
| 919 | // InterpreterRuntime::monitorenter(THREAD, monitor); |
| 920 | |
| 921 | // None of the above fast optimizations worked so we have to get into the |
| 922 | // slow case of monitor enter. |
| 923 | bind(slow_case); |
| 924 | call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 925 | monitor, /*check_for_exceptions=*/true); |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 926 | // } |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 927 | align(32, 12); |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 928 | bind(done); |
| 929 | } |
| 930 | } |
| 931 | |
| 932 | // Unlocks an object. Used in monitorexit bytecode and remove_activation. |
| 933 | // |
| 934 | // Registers alive |
| 935 | // monitor - Address of the BasicObjectLock to be used for locking, |
| 936 | // which must be initialized with the object to lock. |
| 937 | // |
| 938 | // Throw IllegalMonitorException if object is not locked by current thread. |
Goetz Lindenmaier | 7d56518 | 2013-12-11 00:06:11 +0100 | [diff] [blame] | 939 | void InterpreterMacroAssembler::unlock_object(Register monitor, bool check_for_exceptions) { |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 940 | if (UseHeavyMonitors) { |
| 941 | call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 942 | monitor, check_for_exceptions); |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 943 | } else { |
| 944 | |
| 945 | // template code: |
| 946 | // |
| 947 | // if ((displaced_header = monitor->displaced_header()) == NULL) { |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 948 | // // Recursive unlock. Mark the monitor unlocked by setting the object field to NULL. |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 949 | // monitor->set_obj(NULL); |
| 950 | // } else if (Atomic::cmpxchg_ptr(displaced_header, obj->mark_addr(), monitor) == monitor) { |
| 951 | // // We swapped the unlocked mark in displaced_header into the object's mark word. |
| 952 | // monitor->set_obj(NULL); |
| 953 | // } else { |
| 954 | // // Slow path. |
| 955 | // InterpreterRuntime::monitorexit(THREAD, monitor); |
| 956 | // } |
| 957 | |
| 958 | const Register object = R7_ARG5; |
| 959 | const Register displaced_header = R8_ARG6; |
| 960 | const Register object_mark_addr = R9_ARG7; |
| 961 | const Register current_header = R10_ARG8; |
| 962 | |
Goetz Lindenmaier | 7d56518 | 2013-12-11 00:06:11 +0100 | [diff] [blame] | 963 | Label free_slot; |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 964 | Label slow_case; |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 965 | |
| 966 | assert_different_registers(object, displaced_header, object_mark_addr, current_header); |
| 967 | |
| 968 | if (UseBiasedLocking) { |
| 969 | // The object address from the monitor is in object. |
| 970 | ld(object, BasicObjectLock::obj_offset_in_bytes(), monitor); |
| 971 | assert(oopDesc::mark_offset_in_bytes() == 0, "offset of _mark is not 0"); |
Goetz Lindenmaier | 7d56518 | 2013-12-11 00:06:11 +0100 | [diff] [blame] | 972 | biased_locking_exit(CCR0, object, displaced_header, free_slot); |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 973 | } |
| 974 | |
| 975 | // Test first if we are in the fast recursive case. |
| 976 | ld(displaced_header, BasicObjectLock::lock_offset_in_bytes() + |
| 977 | BasicLock::displaced_header_offset_in_bytes(), monitor); |
| 978 | |
| 979 | // If the displaced header is zero, we have a recursive unlock. |
| 980 | cmpdi(CCR0, displaced_header, 0); |
Goetz Lindenmaier | 7d56518 | 2013-12-11 00:06:11 +0100 | [diff] [blame] | 981 | beq(CCR0, free_slot); // recursive unlock |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 982 | |
| 983 | // } else if (Atomic::cmpxchg_ptr(displaced_header, obj->mark_addr(), monitor) == monitor) { |
| 984 | // // We swapped the unlocked mark in displaced_header into the object's mark word. |
| 985 | // monitor->set_obj(NULL); |
| 986 | |
| 987 | // If we still have a lightweight lock, unlock the object and be done. |
| 988 | |
| 989 | // The object address from the monitor is in object. |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 990 | if (!UseBiasedLocking) { ld(object, BasicObjectLock::obj_offset_in_bytes(), monitor); } |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 991 | addi(object_mark_addr, object, oopDesc::mark_offset_in_bytes()); |
| 992 | |
| 993 | // We have the displaced header in displaced_header. If the lock is still |
| 994 | // lightweight, it will contain the monitor address and we'll store the |
| 995 | // displaced header back into the object's mark word. |
| 996 | // CmpxchgX sets CCR0 to cmpX(current, monitor). |
| 997 | cmpxchgd(/*flag=*/CCR0, |
| 998 | /*current_value=*/current_header, |
| 999 | /*compare_value=*/monitor, /*exchange_value=*/displaced_header, |
| 1000 | /*where=*/object_mark_addr, |
Goetz Lindenmaier | 7d56518 | 2013-12-11 00:06:11 +0100 | [diff] [blame] | 1001 | MacroAssembler::MemBarRel, |
| 1002 | MacroAssembler::cmpxchgx_hint_release_lock(), |
| 1003 | noreg, |
| 1004 | &slow_case); |
| 1005 | b(free_slot); |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 1006 | |
| 1007 | // } else { |
| 1008 | // // Slow path. |
| 1009 | // InterpreterRuntime::monitorexit(THREAD, monitor); |
| 1010 | |
| 1011 | // The lock has been converted into a heavy lock and hence |
| 1012 | // we need to get into the slow case. |
| 1013 | bind(slow_case); |
| 1014 | call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 1015 | monitor, check_for_exceptions); |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 1016 | // } |
| 1017 | |
Goetz Lindenmaier | 7d56518 | 2013-12-11 00:06:11 +0100 | [diff] [blame] | 1018 | Label done; |
| 1019 | b(done); // Monitor register may be overwritten! Runtime has already freed the slot. |
| 1020 | |
| 1021 | // Exchange worked, do monitor->set_obj(NULL); |
| 1022 | align(32, 12); |
| 1023 | bind(free_slot); |
| 1024 | li(R0, 0); |
| 1025 | std(R0, BasicObjectLock::obj_offset_in_bytes(), monitor); |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 1026 | bind(done); |
| 1027 | } |
| 1028 | } |
| 1029 | |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 1030 | // Load compiled (i2c) or interpreter entry when calling from interpreted and |
| 1031 | // do the call. Centralized so that all interpreter calls will do the same actions. |
| 1032 | // If jvmti single stepping is on for a thread we must not call compiled code. |
| 1033 | // |
| 1034 | // Input: |
| 1035 | // - Rtarget_method: method to call |
| 1036 | // - Rret_addr: return address |
| 1037 | // - 2 scratch regs |
| 1038 | // |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 1039 | void InterpreterMacroAssembler::call_from_interpreter(Register Rtarget_method, Register Rret_addr, |
| 1040 | Register Rscratch1, Register Rscratch2) { |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 1041 | assert_different_registers(Rscratch1, Rscratch2, Rtarget_method, Rret_addr); |
| 1042 | // Assume we want to go compiled if available. |
| 1043 | const Register Rtarget_addr = Rscratch1; |
| 1044 | const Register Rinterp_only = Rscratch2; |
| 1045 | |
| 1046 | ld(Rtarget_addr, in_bytes(Method::from_interpreted_offset()), Rtarget_method); |
| 1047 | |
| 1048 | if (JvmtiExport::can_post_interpreter_events()) { |
| 1049 | lwz(Rinterp_only, in_bytes(JavaThread::interp_only_mode_offset()), R16_thread); |
| 1050 | |
| 1051 | // JVMTI events, such as single-stepping, are implemented partly by avoiding running |
| 1052 | // compiled code in threads for which the event is enabled. Check here for |
| 1053 | // interp_only_mode if these events CAN be enabled. |
| 1054 | Label done; |
| 1055 | verify_thread(); |
| 1056 | cmpwi(CCR0, Rinterp_only, 0); |
| 1057 | beq(CCR0, done); |
| 1058 | ld(Rtarget_addr, in_bytes(Method::interpreter_entry_offset()), Rtarget_method); |
| 1059 | align(32, 12); |
| 1060 | bind(done); |
| 1061 | } |
| 1062 | |
| 1063 | #ifdef ASSERT |
| 1064 | { |
| 1065 | Label Lok; |
| 1066 | cmpdi(CCR0, Rtarget_addr, 0); |
| 1067 | bne(CCR0, Lok); |
| 1068 | stop("null entry point"); |
| 1069 | bind(Lok); |
| 1070 | } |
| 1071 | #endif // ASSERT |
| 1072 | |
| 1073 | mr(R21_sender_SP, R1_SP); |
| 1074 | |
| 1075 | // Calc a precise SP for the call. The SP value we calculated in |
| 1076 | // generate_fixed_frame() is based on the max_stack() value, so we would waste stack space |
| 1077 | // if esp is not max. Also, the i2c adapter extends the stack space without restoring |
| 1078 | // our pre-calced value, so repeating calls via i2c would result in stack overflow. |
| 1079 | // Since esp already points to an empty slot, we just have to sub 1 additional slot |
| 1080 | // to meet the abi scratch requirements. |
| 1081 | // The max_stack pointer will get restored by means of the GR_Lmax_stack local in |
| 1082 | // the return entry of the interpreter. |
| 1083 | addi(Rscratch2, R15_esp, Interpreter::stackElementSize - frame::abi_reg_args_size); |
| 1084 | clrrdi(Rscratch2, Rscratch2, exact_log2(frame::alignment_in_bytes)); // round towards smaller address |
| 1085 | resize_frame_absolute(Rscratch2, Rscratch2, R0); |
| 1086 | |
| 1087 | mr_if_needed(R19_method, Rtarget_method); |
| 1088 | mtctr(Rtarget_addr); |
| 1089 | mtlr(Rret_addr); |
| 1090 | |
| 1091 | save_interpreter_state(Rscratch2); |
| 1092 | #ifdef ASSERT |
| 1093 | ld(Rscratch1, _ijava_state_neg(top_frame_sp), Rscratch2); // Rscratch2 contains fp |
| 1094 | cmpd(CCR0, R21_sender_SP, Rscratch1); |
| 1095 | asm_assert_eq("top_frame_sp incorrect", 0x951); |
| 1096 | #endif |
| 1097 | |
| 1098 | bctr(); |
| 1099 | } |
| 1100 | |
| 1101 | // Set the method data pointer for the current bcp. |
| 1102 | void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() { |
| 1103 | assert(ProfileInterpreter, "must be profiling interpreter"); |
| 1104 | Label get_continue; |
| 1105 | ld(R28_mdx, in_bytes(Method::method_data_offset()), R19_method); |
| 1106 | test_method_data_pointer(get_continue); |
| 1107 | call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), R19_method, R14_bcp); |
| 1108 | |
| 1109 | addi(R28_mdx, R28_mdx, in_bytes(MethodData::data_offset())); |
| 1110 | add(R28_mdx, R28_mdx, R3_RET); |
| 1111 | bind(get_continue); |
| 1112 | } |
| 1113 | |
| 1114 | // Test ImethodDataPtr. If it is null, continue at the specified label. |
| 1115 | void InterpreterMacroAssembler::test_method_data_pointer(Label& zero_continue) { |
| 1116 | assert(ProfileInterpreter, "must be profiling interpreter"); |
| 1117 | cmpdi(CCR0, R28_mdx, 0); |
| 1118 | beq(CCR0, zero_continue); |
| 1119 | } |
| 1120 | |
| 1121 | void InterpreterMacroAssembler::verify_method_data_pointer() { |
| 1122 | assert(ProfileInterpreter, "must be profiling interpreter"); |
| 1123 | #ifdef ASSERT |
| 1124 | Label verify_continue; |
| 1125 | test_method_data_pointer(verify_continue); |
| 1126 | |
| 1127 | // If the mdp is valid, it will point to a DataLayout header which is |
| 1128 | // consistent with the bcp. The converse is highly probable also. |
| 1129 | lhz(R11_scratch1, in_bytes(DataLayout::bci_offset()), R28_mdx); |
| 1130 | ld(R12_scratch2, in_bytes(Method::const_offset()), R19_method); |
| 1131 | addi(R11_scratch1, R11_scratch1, in_bytes(ConstMethod::codes_offset())); |
| 1132 | add(R11_scratch1, R12_scratch2, R12_scratch2); |
| 1133 | cmpd(CCR0, R11_scratch1, R14_bcp); |
| 1134 | beq(CCR0, verify_continue); |
| 1135 | |
| 1136 | call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp ), R19_method, R14_bcp, R28_mdx); |
| 1137 | |
| 1138 | bind(verify_continue); |
| 1139 | #endif |
| 1140 | } |
| 1141 | |
| 1142 | void InterpreterMacroAssembler::test_invocation_counter_for_mdp(Register invocation_count, |
Martin Doerr | 8c5da27 | 2015-12-04 16:38:04 +0100 | [diff] [blame] | 1143 | Register method_counters, |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 1144 | Register Rscratch, |
| 1145 | Label &profile_continue) { |
| 1146 | assert(ProfileInterpreter, "must be profiling interpreter"); |
| 1147 | // Control will flow to "profile_continue" if the counter is less than the |
| 1148 | // limit or if we call profile_method(). |
| 1149 | Label done; |
| 1150 | |
| 1151 | // If no method data exists, and the counter is high enough, make one. |
Martin Doerr | 8c5da27 | 2015-12-04 16:38:04 +0100 | [diff] [blame] | 1152 | lwz(Rscratch, in_bytes(MethodCounters::interpreter_profile_limit_offset()), method_counters); |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 1153 | |
| 1154 | cmpdi(CCR0, R28_mdx, 0); |
| 1155 | // Test to see if we should create a method data oop. |
Martin Doerr | 8c5da27 | 2015-12-04 16:38:04 +0100 | [diff] [blame] | 1156 | cmpd(CCR1, Rscratch, invocation_count); |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 1157 | bne(CCR0, done); |
| 1158 | bge(CCR1, profile_continue); |
| 1159 | |
| 1160 | // Build it now. |
| 1161 | call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
| 1162 | set_method_data_pointer_for_bcp(); |
| 1163 | b(profile_continue); |
| 1164 | |
| 1165 | align(32, 12); |
| 1166 | bind(done); |
| 1167 | } |
| 1168 | |
Martin Doerr | 8c5da27 | 2015-12-04 16:38:04 +0100 | [diff] [blame] | 1169 | void InterpreterMacroAssembler::test_backedge_count_for_osr(Register backedge_count, Register method_counters, |
| 1170 | Register target_bcp, Register disp, Register Rtmp) { |
| 1171 | assert_different_registers(backedge_count, target_bcp, disp, Rtmp, R4_ARG2); |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 1172 | assert(UseOnStackReplacement,"Must UseOnStackReplacement to test_backedge_count_for_osr"); |
| 1173 | |
| 1174 | Label did_not_overflow; |
| 1175 | Label overflow_with_error; |
| 1176 | |
Martin Doerr | 8c5da27 | 2015-12-04 16:38:04 +0100 | [diff] [blame] | 1177 | lwz(Rtmp, in_bytes(MethodCounters::interpreter_backward_branch_limit_offset()), method_counters); |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 1178 | cmpw(CCR0, backedge_count, Rtmp); |
| 1179 | |
| 1180 | blt(CCR0, did_not_overflow); |
| 1181 | |
| 1182 | // When ProfileInterpreter is on, the backedge_count comes from the |
| 1183 | // methodDataOop, which value does not get reset on the call to |
| 1184 | // frequency_counter_overflow(). To avoid excessive calls to the overflow |
| 1185 | // routine while the method is being compiled, add a second test to make sure |
| 1186 | // the overflow function is called only once every overflow_frequency. |
| 1187 | if (ProfileInterpreter) { |
| 1188 | const int overflow_frequency = 1024; |
Martin Doerr | 8c5da27 | 2015-12-04 16:38:04 +0100 | [diff] [blame] | 1189 | andi_(Rtmp, backedge_count, overflow_frequency-1); |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 1190 | bne(CCR0, did_not_overflow); |
| 1191 | } |
| 1192 | |
| 1193 | // Overflow in loop, pass branch bytecode. |
Martin Doerr | 8c5da27 | 2015-12-04 16:38:04 +0100 | [diff] [blame] | 1194 | subf(R4_ARG2, disp, target_bcp); // Compute branch bytecode (previous bcp). |
| 1195 | call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), R4_ARG2, true); |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 1196 | |
| 1197 | // Was an OSR adapter generated? |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 1198 | cmpdi(CCR0, R3_RET, 0); |
| 1199 | beq(CCR0, overflow_with_error); |
| 1200 | |
| 1201 | // Has the nmethod been invalidated already? |
Tobias Hartmann | dd6285d | 2014-09-15 08:08:22 +0200 | [diff] [blame] | 1202 | lbz(Rtmp, nmethod::state_offset(), R3_RET); |
| 1203 | cmpwi(CCR0, Rtmp, nmethod::in_use); |
| 1204 | bne(CCR0, overflow_with_error); |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 1205 | |
| 1206 | // Migrate the interpreter frame off of the stack. |
| 1207 | // We can use all registers because we will not return to interpreter from this point. |
| 1208 | |
| 1209 | // Save nmethod. |
| 1210 | const Register osr_nmethod = R31; |
| 1211 | mr(osr_nmethod, R3_RET); |
| 1212 | set_top_ijava_frame_at_SP_as_last_Java_frame(R1_SP, R11_scratch1); |
| 1213 | call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin), R16_thread); |
| 1214 | reset_last_Java_frame(); |
| 1215 | // OSR buffer is in ARG1 |
| 1216 | |
| 1217 | // Remove the interpreter frame. |
| 1218 | merge_frames(/*top_frame_sp*/ R21_sender_SP, /*return_pc*/ R0, R11_scratch1, R12_scratch2); |
| 1219 | |
| 1220 | // Jump to the osr code. |
| 1221 | ld(R11_scratch1, nmethod::osr_entry_point_offset(), osr_nmethod); |
| 1222 | mtlr(R0); |
| 1223 | mtctr(R11_scratch1); |
| 1224 | bctr(); |
| 1225 | |
| 1226 | align(32, 12); |
| 1227 | bind(overflow_with_error); |
| 1228 | bind(did_not_overflow); |
| 1229 | } |
| 1230 | |
| 1231 | // Store a value at some constant offset from the method data pointer. |
| 1232 | void InterpreterMacroAssembler::set_mdp_data_at(int constant, Register value) { |
| 1233 | assert(ProfileInterpreter, "must be profiling interpreter"); |
| 1234 | |
| 1235 | std(value, constant, R28_mdx); |
| 1236 | } |
| 1237 | |
| 1238 | // Increment the value at some constant offset from the method data pointer. |
| 1239 | void InterpreterMacroAssembler::increment_mdp_data_at(int constant, |
| 1240 | Register counter_addr, |
| 1241 | Register Rbumped_count, |
| 1242 | bool decrement) { |
| 1243 | // Locate the counter at a fixed offset from the mdp: |
| 1244 | addi(counter_addr, R28_mdx, constant); |
| 1245 | increment_mdp_data_at(counter_addr, Rbumped_count, decrement); |
| 1246 | } |
| 1247 | |
| 1248 | // Increment the value at some non-fixed (reg + constant) offset from |
| 1249 | // the method data pointer. |
| 1250 | void InterpreterMacroAssembler::increment_mdp_data_at(Register reg, |
| 1251 | int constant, |
| 1252 | Register scratch, |
| 1253 | Register Rbumped_count, |
| 1254 | bool decrement) { |
| 1255 | // Add the constant to reg to get the offset. |
| 1256 | add(scratch, R28_mdx, reg); |
| 1257 | // Then calculate the counter address. |
| 1258 | addi(scratch, scratch, constant); |
| 1259 | increment_mdp_data_at(scratch, Rbumped_count, decrement); |
| 1260 | } |
| 1261 | |
| 1262 | void InterpreterMacroAssembler::increment_mdp_data_at(Register counter_addr, |
| 1263 | Register Rbumped_count, |
| 1264 | bool decrement) { |
| 1265 | assert(ProfileInterpreter, "must be profiling interpreter"); |
| 1266 | |
| 1267 | // Load the counter. |
| 1268 | ld(Rbumped_count, 0, counter_addr); |
| 1269 | |
| 1270 | if (decrement) { |
| 1271 | // Decrement the register. Set condition codes. |
| 1272 | addi(Rbumped_count, Rbumped_count, - DataLayout::counter_increment); |
| 1273 | // Store the decremented counter, if it is still negative. |
| 1274 | std(Rbumped_count, 0, counter_addr); |
| 1275 | // Note: add/sub overflow check are not ported, since 64 bit |
| 1276 | // calculation should never overflow. |
| 1277 | } else { |
| 1278 | // Increment the register. Set carry flag. |
| 1279 | addi(Rbumped_count, Rbumped_count, DataLayout::counter_increment); |
| 1280 | // Store the incremented counter. |
| 1281 | std(Rbumped_count, 0, counter_addr); |
| 1282 | } |
| 1283 | } |
| 1284 | |
| 1285 | // Set a flag value at the current method data pointer position. |
| 1286 | void InterpreterMacroAssembler::set_mdp_flag_at(int flag_constant, |
| 1287 | Register scratch) { |
| 1288 | assert(ProfileInterpreter, "must be profiling interpreter"); |
| 1289 | // Load the data header. |
| 1290 | lbz(scratch, in_bytes(DataLayout::flags_offset()), R28_mdx); |
| 1291 | // Set the flag. |
| 1292 | ori(scratch, scratch, flag_constant); |
| 1293 | // Store the modified header. |
| 1294 | stb(scratch, in_bytes(DataLayout::flags_offset()), R28_mdx); |
| 1295 | } |
| 1296 | |
| 1297 | // Test the location at some offset from the method data pointer. |
| 1298 | // If it is not equal to value, branch to the not_equal_continue Label. |
| 1299 | void InterpreterMacroAssembler::test_mdp_data_at(int offset, |
| 1300 | Register value, |
| 1301 | Label& not_equal_continue, |
| 1302 | Register test_out) { |
| 1303 | assert(ProfileInterpreter, "must be profiling interpreter"); |
| 1304 | |
| 1305 | ld(test_out, offset, R28_mdx); |
| 1306 | cmpd(CCR0, value, test_out); |
| 1307 | bne(CCR0, not_equal_continue); |
| 1308 | } |
| 1309 | |
| 1310 | // Update the method data pointer by the displacement located at some fixed |
| 1311 | // offset from the method data pointer. |
| 1312 | void InterpreterMacroAssembler::update_mdp_by_offset(int offset_of_disp, |
| 1313 | Register scratch) { |
| 1314 | assert(ProfileInterpreter, "must be profiling interpreter"); |
| 1315 | |
| 1316 | ld(scratch, offset_of_disp, R28_mdx); |
| 1317 | add(R28_mdx, scratch, R28_mdx); |
| 1318 | } |
| 1319 | |
| 1320 | // Update the method data pointer by the displacement located at the |
| 1321 | // offset (reg + offset_of_disp). |
| 1322 | void InterpreterMacroAssembler::update_mdp_by_offset(Register reg, |
| 1323 | int offset_of_disp, |
| 1324 | Register scratch) { |
| 1325 | assert(ProfileInterpreter, "must be profiling interpreter"); |
| 1326 | |
| 1327 | add(scratch, reg, R28_mdx); |
| 1328 | ld(scratch, offset_of_disp, scratch); |
| 1329 | add(R28_mdx, scratch, R28_mdx); |
| 1330 | } |
| 1331 | |
| 1332 | // Update the method data pointer by a simple constant displacement. |
| 1333 | void InterpreterMacroAssembler::update_mdp_by_constant(int constant) { |
| 1334 | assert(ProfileInterpreter, "must be profiling interpreter"); |
| 1335 | addi(R28_mdx, R28_mdx, constant); |
| 1336 | } |
| 1337 | |
| 1338 | // Update the method data pointer for a _ret bytecode whose target |
| 1339 | // was not among our cached targets. |
| 1340 | void InterpreterMacroAssembler::update_mdp_for_ret(TosState state, |
| 1341 | Register return_bci) { |
| 1342 | assert(ProfileInterpreter, "must be profiling interpreter"); |
| 1343 | |
| 1344 | push(state); |
| 1345 | assert(return_bci->is_nonvolatile(), "need to protect return_bci"); |
| 1346 | call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci); |
| 1347 | pop(state); |
| 1348 | } |
| 1349 | |
| 1350 | // Increments the backedge counter. |
| 1351 | // Returns backedge counter + invocation counter in Rdst. |
| 1352 | void InterpreterMacroAssembler::increment_backedge_counter(const Register Rcounters, const Register Rdst, |
| 1353 | const Register Rtmp1, Register Rscratch) { |
| 1354 | assert(UseCompiler, "incrementing must be useful"); |
| 1355 | assert_different_registers(Rdst, Rtmp1); |
| 1356 | const Register invocation_counter = Rtmp1; |
| 1357 | const Register counter = Rdst; |
Martin Doerr | 8c5da27 | 2015-12-04 16:38:04 +0100 | [diff] [blame] | 1358 | // TODO: PPC port: assert(4 == InvocationCounter::sz_counter(), "unexpected field size."); |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 1359 | |
| 1360 | // Load backedge counter. |
| 1361 | lwz(counter, in_bytes(MethodCounters::backedge_counter_offset()) + |
| 1362 | in_bytes(InvocationCounter::counter_offset()), Rcounters); |
| 1363 | // Load invocation counter. |
| 1364 | lwz(invocation_counter, in_bytes(MethodCounters::invocation_counter_offset()) + |
| 1365 | in_bytes(InvocationCounter::counter_offset()), Rcounters); |
| 1366 | |
| 1367 | // Add the delta to the backedge counter. |
| 1368 | addi(counter, counter, InvocationCounter::count_increment); |
| 1369 | |
| 1370 | // Mask the invocation counter. |
Martin Doerr | 8c5da27 | 2015-12-04 16:38:04 +0100 | [diff] [blame] | 1371 | andi(invocation_counter, invocation_counter, InvocationCounter::count_mask_value); |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 1372 | |
| 1373 | // Store new counter value. |
| 1374 | stw(counter, in_bytes(MethodCounters::backedge_counter_offset()) + |
| 1375 | in_bytes(InvocationCounter::counter_offset()), Rcounters); |
| 1376 | // Return invocation counter + backedge counter. |
| 1377 | add(counter, counter, invocation_counter); |
| 1378 | } |
| 1379 | |
| 1380 | // Count a taken branch in the bytecodes. |
| 1381 | void InterpreterMacroAssembler::profile_taken_branch(Register scratch, Register bumped_count) { |
| 1382 | if (ProfileInterpreter) { |
| 1383 | Label profile_continue; |
| 1384 | |
| 1385 | // If no method data exists, go to profile_continue. |
| 1386 | test_method_data_pointer(profile_continue); |
| 1387 | |
| 1388 | // We are taking a branch. Increment the taken count. |
| 1389 | increment_mdp_data_at(in_bytes(JumpData::taken_offset()), scratch, bumped_count); |
| 1390 | |
| 1391 | // The method data pointer needs to be updated to reflect the new target. |
| 1392 | update_mdp_by_offset(in_bytes(JumpData::displacement_offset()), scratch); |
| 1393 | bind (profile_continue); |
| 1394 | } |
| 1395 | } |
| 1396 | |
| 1397 | // Count a not-taken branch in the bytecodes. |
| 1398 | void InterpreterMacroAssembler::profile_not_taken_branch(Register scratch1, Register scratch2) { |
| 1399 | if (ProfileInterpreter) { |
| 1400 | Label profile_continue; |
| 1401 | |
| 1402 | // If no method data exists, go to profile_continue. |
| 1403 | test_method_data_pointer(profile_continue); |
| 1404 | |
| 1405 | // We are taking a branch. Increment the not taken count. |
| 1406 | increment_mdp_data_at(in_bytes(BranchData::not_taken_offset()), scratch1, scratch2); |
| 1407 | |
| 1408 | // The method data pointer needs to be updated to correspond to the |
| 1409 | // next bytecode. |
| 1410 | update_mdp_by_constant(in_bytes(BranchData::branch_data_size())); |
| 1411 | bind (profile_continue); |
| 1412 | } |
| 1413 | } |
| 1414 | |
| 1415 | // Count a non-virtual call in the bytecodes. |
| 1416 | void InterpreterMacroAssembler::profile_call(Register scratch1, Register scratch2) { |
| 1417 | if (ProfileInterpreter) { |
| 1418 | Label profile_continue; |
| 1419 | |
| 1420 | // If no method data exists, go to profile_continue. |
| 1421 | test_method_data_pointer(profile_continue); |
| 1422 | |
| 1423 | // We are making a call. Increment the count. |
| 1424 | increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2); |
| 1425 | |
| 1426 | // The method data pointer needs to be updated to reflect the new target. |
| 1427 | update_mdp_by_constant(in_bytes(CounterData::counter_data_size())); |
| 1428 | bind (profile_continue); |
| 1429 | } |
| 1430 | } |
| 1431 | |
| 1432 | // Count a final call in the bytecodes. |
| 1433 | void InterpreterMacroAssembler::profile_final_call(Register scratch1, Register scratch2) { |
| 1434 | if (ProfileInterpreter) { |
| 1435 | Label profile_continue; |
| 1436 | |
| 1437 | // If no method data exists, go to profile_continue. |
| 1438 | test_method_data_pointer(profile_continue); |
| 1439 | |
| 1440 | // We are making a call. Increment the count. |
| 1441 | increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2); |
| 1442 | |
| 1443 | // The method data pointer needs to be updated to reflect the new target. |
| 1444 | update_mdp_by_constant(in_bytes(VirtualCallData::virtual_call_data_size())); |
| 1445 | bind (profile_continue); |
| 1446 | } |
| 1447 | } |
| 1448 | |
| 1449 | // Count a virtual call in the bytecodes. |
| 1450 | void InterpreterMacroAssembler::profile_virtual_call(Register Rreceiver, |
| 1451 | Register Rscratch1, |
| 1452 | Register Rscratch2, |
| 1453 | bool receiver_can_be_null) { |
| 1454 | if (!ProfileInterpreter) { return; } |
| 1455 | Label profile_continue; |
| 1456 | |
| 1457 | // If no method data exists, go to profile_continue. |
| 1458 | test_method_data_pointer(profile_continue); |
| 1459 | |
| 1460 | Label skip_receiver_profile; |
| 1461 | if (receiver_can_be_null) { |
| 1462 | Label not_null; |
| 1463 | cmpdi(CCR0, Rreceiver, 0); |
| 1464 | bne(CCR0, not_null); |
| 1465 | // We are making a call. Increment the count for null receiver. |
| 1466 | increment_mdp_data_at(in_bytes(CounterData::count_offset()), Rscratch1, Rscratch2); |
| 1467 | b(skip_receiver_profile); |
| 1468 | bind(not_null); |
| 1469 | } |
| 1470 | |
| 1471 | // Record the receiver type. |
| 1472 | record_klass_in_profile(Rreceiver, Rscratch1, Rscratch2, true); |
| 1473 | bind(skip_receiver_profile); |
| 1474 | |
| 1475 | // The method data pointer needs to be updated to reflect the new target. |
| 1476 | update_mdp_by_constant(in_bytes(VirtualCallData::virtual_call_data_size())); |
| 1477 | bind (profile_continue); |
| 1478 | } |
| 1479 | |
| 1480 | void InterpreterMacroAssembler::profile_typecheck(Register Rklass, Register Rscratch1, Register Rscratch2) { |
| 1481 | if (ProfileInterpreter) { |
| 1482 | Label profile_continue; |
| 1483 | |
| 1484 | // If no method data exists, go to profile_continue. |
| 1485 | test_method_data_pointer(profile_continue); |
| 1486 | |
| 1487 | int mdp_delta = in_bytes(BitData::bit_data_size()); |
| 1488 | if (TypeProfileCasts) { |
| 1489 | mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); |
| 1490 | |
| 1491 | // Record the object type. |
| 1492 | record_klass_in_profile(Rklass, Rscratch1, Rscratch2, false); |
| 1493 | } |
| 1494 | |
| 1495 | // The method data pointer needs to be updated. |
| 1496 | update_mdp_by_constant(mdp_delta); |
| 1497 | |
| 1498 | bind (profile_continue); |
| 1499 | } |
| 1500 | } |
| 1501 | |
| 1502 | void InterpreterMacroAssembler::profile_typecheck_failed(Register Rscratch1, Register Rscratch2) { |
| 1503 | if (ProfileInterpreter && TypeProfileCasts) { |
| 1504 | Label profile_continue; |
| 1505 | |
| 1506 | // If no method data exists, go to profile_continue. |
| 1507 | test_method_data_pointer(profile_continue); |
| 1508 | |
| 1509 | int count_offset = in_bytes(CounterData::count_offset()); |
| 1510 | // Back up the address, since we have already bumped the mdp. |
| 1511 | count_offset -= in_bytes(VirtualCallData::virtual_call_data_size()); |
| 1512 | |
| 1513 | // *Decrement* the counter. We expect to see zero or small negatives. |
| 1514 | increment_mdp_data_at(count_offset, Rscratch1, Rscratch2, true); |
| 1515 | |
| 1516 | bind (profile_continue); |
| 1517 | } |
| 1518 | } |
| 1519 | |
| 1520 | // Count a ret in the bytecodes. |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 1521 | void InterpreterMacroAssembler::profile_ret(TosState state, Register return_bci, |
| 1522 | Register scratch1, Register scratch2) { |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 1523 | if (ProfileInterpreter) { |
| 1524 | Label profile_continue; |
| 1525 | uint row; |
| 1526 | |
| 1527 | // If no method data exists, go to profile_continue. |
| 1528 | test_method_data_pointer(profile_continue); |
| 1529 | |
| 1530 | // Update the total ret count. |
| 1531 | increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2 ); |
| 1532 | |
| 1533 | for (row = 0; row < RetData::row_limit(); row++) { |
| 1534 | Label next_test; |
| 1535 | |
| 1536 | // See if return_bci is equal to bci[n]: |
| 1537 | test_mdp_data_at(in_bytes(RetData::bci_offset(row)), return_bci, next_test, scratch1); |
| 1538 | |
| 1539 | // return_bci is equal to bci[n]. Increment the count. |
| 1540 | increment_mdp_data_at(in_bytes(RetData::bci_count_offset(row)), scratch1, scratch2); |
| 1541 | |
| 1542 | // The method data pointer needs to be updated to reflect the new target. |
| 1543 | update_mdp_by_offset(in_bytes(RetData::bci_displacement_offset(row)), scratch1); |
| 1544 | b(profile_continue); |
| 1545 | bind(next_test); |
| 1546 | } |
| 1547 | |
| 1548 | update_mdp_for_ret(state, return_bci); |
| 1549 | |
| 1550 | bind (profile_continue); |
| 1551 | } |
| 1552 | } |
| 1553 | |
| 1554 | // Count the default case of a switch construct. |
| 1555 | void InterpreterMacroAssembler::profile_switch_default(Register scratch1, Register scratch2) { |
| 1556 | if (ProfileInterpreter) { |
| 1557 | Label profile_continue; |
| 1558 | |
| 1559 | // If no method data exists, go to profile_continue. |
| 1560 | test_method_data_pointer(profile_continue); |
| 1561 | |
| 1562 | // Update the default case count |
| 1563 | increment_mdp_data_at(in_bytes(MultiBranchData::default_count_offset()), |
| 1564 | scratch1, scratch2); |
| 1565 | |
| 1566 | // The method data pointer needs to be updated. |
| 1567 | update_mdp_by_offset(in_bytes(MultiBranchData::default_displacement_offset()), |
| 1568 | scratch1); |
| 1569 | |
| 1570 | bind (profile_continue); |
| 1571 | } |
| 1572 | } |
| 1573 | |
| 1574 | // Count the index'th case of a switch construct. |
| 1575 | void InterpreterMacroAssembler::profile_switch_case(Register index, |
| 1576 | Register scratch1, |
| 1577 | Register scratch2, |
| 1578 | Register scratch3) { |
| 1579 | if (ProfileInterpreter) { |
| 1580 | assert_different_registers(index, scratch1, scratch2, scratch3); |
| 1581 | Label profile_continue; |
| 1582 | |
| 1583 | // If no method data exists, go to profile_continue. |
| 1584 | test_method_data_pointer(profile_continue); |
| 1585 | |
| 1586 | // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes(). |
| 1587 | li(scratch3, in_bytes(MultiBranchData::case_array_offset())); |
| 1588 | |
| 1589 | assert (in_bytes(MultiBranchData::per_case_size()) == 16, "so that shladd works"); |
| 1590 | sldi(scratch1, index, exact_log2(in_bytes(MultiBranchData::per_case_size()))); |
| 1591 | add(scratch1, scratch1, scratch3); |
| 1592 | |
| 1593 | // Update the case count. |
| 1594 | increment_mdp_data_at(scratch1, in_bytes(MultiBranchData::relative_count_offset()), scratch2, scratch3); |
| 1595 | |
| 1596 | // The method data pointer needs to be updated. |
| 1597 | update_mdp_by_offset(scratch1, in_bytes(MultiBranchData::relative_displacement_offset()), scratch2); |
| 1598 | |
| 1599 | bind (profile_continue); |
| 1600 | } |
| 1601 | } |
| 1602 | |
| 1603 | void InterpreterMacroAssembler::profile_null_seen(Register Rscratch1, Register Rscratch2) { |
| 1604 | if (ProfileInterpreter) { |
| 1605 | assert_different_registers(Rscratch1, Rscratch2); |
| 1606 | Label profile_continue; |
| 1607 | |
| 1608 | // If no method data exists, go to profile_continue. |
| 1609 | test_method_data_pointer(profile_continue); |
| 1610 | |
| 1611 | set_mdp_flag_at(BitData::null_seen_byte_constant(), Rscratch1); |
| 1612 | |
| 1613 | // The method data pointer needs to be updated. |
| 1614 | int mdp_delta = in_bytes(BitData::bit_data_size()); |
| 1615 | if (TypeProfileCasts) { |
| 1616 | mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); |
| 1617 | } |
| 1618 | update_mdp_by_constant(mdp_delta); |
| 1619 | |
| 1620 | bind (profile_continue); |
| 1621 | } |
| 1622 | } |
| 1623 | |
| 1624 | void InterpreterMacroAssembler::record_klass_in_profile(Register Rreceiver, |
| 1625 | Register Rscratch1, Register Rscratch2, |
| 1626 | bool is_virtual_call) { |
| 1627 | assert(ProfileInterpreter, "must be profiling"); |
| 1628 | assert_different_registers(Rreceiver, Rscratch1, Rscratch2); |
| 1629 | |
| 1630 | Label done; |
| 1631 | record_klass_in_profile_helper(Rreceiver, Rscratch1, Rscratch2, 0, done, is_virtual_call); |
| 1632 | bind (done); |
| 1633 | } |
| 1634 | |
| 1635 | void InterpreterMacroAssembler::record_klass_in_profile_helper( |
| 1636 | Register receiver, Register scratch1, Register scratch2, |
| 1637 | int start_row, Label& done, bool is_virtual_call) { |
| 1638 | if (TypeProfileWidth == 0) { |
| 1639 | if (is_virtual_call) { |
| 1640 | increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2); |
| 1641 | } |
| 1642 | return; |
| 1643 | } |
| 1644 | |
| 1645 | int last_row = VirtualCallData::row_limit() - 1; |
| 1646 | assert(start_row <= last_row, "must be work left to do"); |
| 1647 | // Test this row for both the receiver and for null. |
| 1648 | // Take any of three different outcomes: |
| 1649 | // 1. found receiver => increment count and goto done |
| 1650 | // 2. found null => keep looking for case 1, maybe allocate this cell |
| 1651 | // 3. found something else => keep looking for cases 1 and 2 |
| 1652 | // Case 3 is handled by a recursive call. |
| 1653 | for (int row = start_row; row <= last_row; row++) { |
| 1654 | Label next_test; |
| 1655 | bool test_for_null_also = (row == start_row); |
| 1656 | |
| 1657 | // See if the receiver is receiver[n]. |
| 1658 | int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row)); |
| 1659 | test_mdp_data_at(recvr_offset, receiver, next_test, scratch1); |
| 1660 | // delayed()->tst(scratch); |
| 1661 | |
| 1662 | // The receiver is receiver[n]. Increment count[n]. |
| 1663 | int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row)); |
| 1664 | increment_mdp_data_at(count_offset, scratch1, scratch2); |
| 1665 | b(done); |
| 1666 | bind(next_test); |
| 1667 | |
| 1668 | if (test_for_null_also) { |
| 1669 | Label found_null; |
| 1670 | // Failed the equality check on receiver[n]... Test for null. |
| 1671 | if (start_row == last_row) { |
| 1672 | // The only thing left to do is handle the null case. |
| 1673 | if (is_virtual_call) { |
| 1674 | // Scratch1 contains test_out from test_mdp_data_at. |
| 1675 | cmpdi(CCR0, scratch1, 0); |
| 1676 | beq(CCR0, found_null); |
| 1677 | // Receiver did not match any saved receiver and there is no empty row for it. |
| 1678 | // Increment total counter to indicate polymorphic case. |
| 1679 | increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2); |
| 1680 | b(done); |
| 1681 | bind(found_null); |
| 1682 | } else { |
| 1683 | cmpdi(CCR0, scratch1, 0); |
| 1684 | bne(CCR0, done); |
| 1685 | } |
| 1686 | break; |
| 1687 | } |
| 1688 | // Since null is rare, make it be the branch-taken case. |
| 1689 | cmpdi(CCR0, scratch1, 0); |
| 1690 | beq(CCR0, found_null); |
| 1691 | |
| 1692 | // Put all the "Case 3" tests here. |
| 1693 | record_klass_in_profile_helper(receiver, scratch1, scratch2, start_row + 1, done, is_virtual_call); |
| 1694 | |
| 1695 | // Found a null. Keep searching for a matching receiver, |
| 1696 | // but remember that this is an empty (unused) slot. |
| 1697 | bind(found_null); |
| 1698 | } |
| 1699 | } |
| 1700 | |
| 1701 | // In the fall-through case, we found no matching receiver, but we |
| 1702 | // observed the receiver[start_row] is NULL. |
| 1703 | |
| 1704 | // Fill in the receiver field and increment the count. |
| 1705 | int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row)); |
| 1706 | set_mdp_data_at(recvr_offset, receiver); |
| 1707 | int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row)); |
| 1708 | li(scratch1, DataLayout::counter_increment); |
| 1709 | set_mdp_data_at(count_offset, scratch1); |
| 1710 | if (start_row > 0) { |
| 1711 | b(done); |
| 1712 | } |
| 1713 | } |
| 1714 | |
Goetz Lindenmaier | 46714a7 | 2014-12-09 11:57:46 +0100 | [diff] [blame] | 1715 | // Argument and return type profilig. |
| 1716 | // kills: tmp, tmp2, R0, CR0, CR1 |
| 1717 | void InterpreterMacroAssembler::profile_obj_type(Register obj, Register mdo_addr_base, |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 1718 | RegisterOrConstant mdo_addr_offs, |
| 1719 | Register tmp, Register tmp2) { |
Goetz Lindenmaier | 46714a7 | 2014-12-09 11:57:46 +0100 | [diff] [blame] | 1720 | Label do_nothing, do_update; |
| 1721 | |
| 1722 | // tmp2 = obj is allowed |
| 1723 | assert_different_registers(obj, mdo_addr_base, tmp, R0); |
| 1724 | assert_different_registers(tmp2, mdo_addr_base, tmp, R0); |
| 1725 | const Register klass = tmp2; |
| 1726 | |
| 1727 | verify_oop(obj); |
| 1728 | |
| 1729 | ld(tmp, mdo_addr_offs, mdo_addr_base); |
| 1730 | |
| 1731 | // Set null_seen if obj is 0. |
| 1732 | cmpdi(CCR0, obj, 0); |
| 1733 | ori(R0, tmp, TypeEntries::null_seen); |
| 1734 | beq(CCR0, do_update); |
| 1735 | |
| 1736 | load_klass(klass, obj); |
| 1737 | |
| 1738 | clrrdi(R0, tmp, exact_log2(-TypeEntries::type_klass_mask)); |
| 1739 | // Basically same as andi(R0, tmp, TypeEntries::type_klass_mask); |
| 1740 | cmpd(CCR1, R0, klass); |
| 1741 | // Klass seen before, nothing to do (regardless of unknown bit). |
| 1742 | //beq(CCR1, do_nothing); |
| 1743 | |
| 1744 | andi_(R0, klass, TypeEntries::type_unknown); |
| 1745 | // Already unknown. Nothing to do anymore. |
| 1746 | //bne(CCR0, do_nothing); |
Martin Doerr | 53821ff | 2015-01-12 11:14:49 +0100 | [diff] [blame] | 1747 | crorc(CCR0, Assembler::equal, CCR1, Assembler::equal); // cr0 eq = cr1 eq or cr0 ne |
Goetz Lindenmaier | 46714a7 | 2014-12-09 11:57:46 +0100 | [diff] [blame] | 1748 | beq(CCR0, do_nothing); |
| 1749 | |
| 1750 | clrrdi_(R0, tmp, exact_log2(-TypeEntries::type_mask)); |
| 1751 | orr(R0, klass, tmp); // Combine klass and null_seen bit (only used if (tmp & type_mask)==0). |
| 1752 | beq(CCR0, do_update); // First time here. Set profile type. |
| 1753 | |
| 1754 | // Different than before. Cannot keep accurate profile. |
| 1755 | ori(R0, tmp, TypeEntries::type_unknown); |
| 1756 | |
| 1757 | bind(do_update); |
| 1758 | // update profile |
| 1759 | std(R0, mdo_addr_offs, mdo_addr_base); |
| 1760 | |
| 1761 | align(32, 12); |
| 1762 | bind(do_nothing); |
| 1763 | } |
| 1764 | |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 1765 | void InterpreterMacroAssembler::profile_arguments_type(Register callee, |
| 1766 | Register tmp1, Register tmp2, |
| 1767 | bool is_virtual) { |
Goetz Lindenmaier | 46714a7 | 2014-12-09 11:57:46 +0100 | [diff] [blame] | 1768 | if (!ProfileInterpreter) { |
| 1769 | return; |
| 1770 | } |
| 1771 | |
| 1772 | assert_different_registers(callee, tmp1, tmp2, R28_mdx); |
| 1773 | |
| 1774 | if (MethodData::profile_arguments() || MethodData::profile_return()) { |
| 1775 | Label profile_continue; |
| 1776 | |
| 1777 | test_method_data_pointer(profile_continue); |
| 1778 | |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 1779 | int off_to_start = is_virtual ? |
| 1780 | in_bytes(VirtualCallData::virtual_call_data_size()) : in_bytes(CounterData::counter_data_size()); |
Goetz Lindenmaier | 46714a7 | 2014-12-09 11:57:46 +0100 | [diff] [blame] | 1781 | |
| 1782 | lbz(tmp1, in_bytes(DataLayout::tag_offset()) - off_to_start, R28_mdx); |
| 1783 | cmpwi(CCR0, tmp1, is_virtual ? DataLayout::virtual_call_type_data_tag : DataLayout::call_type_data_tag); |
| 1784 | bne(CCR0, profile_continue); |
| 1785 | |
| 1786 | if (MethodData::profile_arguments()) { |
| 1787 | Label done; |
| 1788 | int off_to_args = in_bytes(TypeEntriesAtCall::args_data_offset()); |
| 1789 | add(R28_mdx, off_to_args, R28_mdx); |
| 1790 | |
| 1791 | for (int i = 0; i < TypeProfileArgsLimit; i++) { |
| 1792 | if (i > 0 || MethodData::profile_return()) { |
| 1793 | // If return value type is profiled we may have no argument to profile. |
| 1794 | ld(tmp1, in_bytes(TypeEntriesAtCall::cell_count_offset())-off_to_args, R28_mdx); |
| 1795 | cmpdi(CCR0, tmp1, (i+1)*TypeStackSlotEntries::per_arg_count()); |
| 1796 | addi(tmp1, tmp1, -i*TypeStackSlotEntries::per_arg_count()); |
| 1797 | blt(CCR0, done); |
| 1798 | } |
| 1799 | ld(tmp1, in_bytes(Method::const_offset()), callee); |
| 1800 | lhz(tmp1, in_bytes(ConstMethod::size_of_parameters_offset()), tmp1); |
| 1801 | // Stack offset o (zero based) from the start of the argument |
| 1802 | // list, for n arguments translates into offset n - o - 1 from |
| 1803 | // the end of the argument list. But there's an extra slot at |
| 1804 | // the top of the stack. So the offset is n - o from Lesp. |
| 1805 | ld(tmp2, in_bytes(TypeEntriesAtCall::stack_slot_offset(i))-off_to_args, R28_mdx); |
| 1806 | subf(tmp1, tmp2, tmp1); |
| 1807 | |
| 1808 | sldi(tmp1, tmp1, Interpreter::logStackElementSize); |
| 1809 | ldx(tmp1, tmp1, R15_esp); |
| 1810 | |
| 1811 | profile_obj_type(tmp1, R28_mdx, in_bytes(TypeEntriesAtCall::argument_type_offset(i))-off_to_args, tmp2, tmp1); |
| 1812 | |
| 1813 | int to_add = in_bytes(TypeStackSlotEntries::per_arg_size()); |
| 1814 | addi(R28_mdx, R28_mdx, to_add); |
| 1815 | off_to_args += to_add; |
| 1816 | } |
| 1817 | |
| 1818 | if (MethodData::profile_return()) { |
| 1819 | ld(tmp1, in_bytes(TypeEntriesAtCall::cell_count_offset())-off_to_args, R28_mdx); |
| 1820 | addi(tmp1, tmp1, -TypeProfileArgsLimit*TypeStackSlotEntries::per_arg_count()); |
| 1821 | } |
| 1822 | |
| 1823 | bind(done); |
| 1824 | |
| 1825 | if (MethodData::profile_return()) { |
| 1826 | // We're right after the type profile for the last |
| 1827 | // argument. tmp1 is the number of cells left in the |
| 1828 | // CallTypeData/VirtualCallTypeData to reach its end. Non null |
| 1829 | // if there's a return to profile. |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 1830 | assert(ReturnTypeEntry::static_cell_count() < TypeStackSlotEntries::per_arg_count(), |
| 1831 | "can't move past ret type"); |
Goetz Lindenmaier | 46714a7 | 2014-12-09 11:57:46 +0100 | [diff] [blame] | 1832 | sldi(tmp1, tmp1, exact_log2(DataLayout::cell_size)); |
| 1833 | add(R28_mdx, tmp1, R28_mdx); |
| 1834 | } |
| 1835 | } else { |
| 1836 | assert(MethodData::profile_return(), "either profile call args or call ret"); |
| 1837 | update_mdp_by_constant(in_bytes(TypeEntriesAtCall::return_only_size())); |
| 1838 | } |
| 1839 | |
| 1840 | // Mdp points right after the end of the |
| 1841 | // CallTypeData/VirtualCallTypeData, right after the cells for the |
| 1842 | // return value type if there's one. |
| 1843 | align(32, 12); |
| 1844 | bind(profile_continue); |
| 1845 | } |
| 1846 | } |
| 1847 | |
| 1848 | void InterpreterMacroAssembler::profile_return_type(Register ret, Register tmp1, Register tmp2) { |
| 1849 | assert_different_registers(ret, tmp1, tmp2); |
| 1850 | if (ProfileInterpreter && MethodData::profile_return()) { |
| 1851 | Label profile_continue; |
| 1852 | |
| 1853 | test_method_data_pointer(profile_continue); |
| 1854 | |
| 1855 | if (MethodData::profile_return_jsr292_only()) { |
| 1856 | // If we don't profile all invoke bytecodes we must make sure |
| 1857 | // it's a bytecode we indeed profile. We can't go back to the |
| 1858 | // begining of the ProfileData we intend to update to check its |
| 1859 | // type because we're right after it and we don't known its |
| 1860 | // length. |
| 1861 | lbz(tmp1, 0, R14_bcp); |
Martin Doerr | 8c5da27 | 2015-12-04 16:38:04 +0100 | [diff] [blame] | 1862 | lbz(tmp2, Method::intrinsic_id_offset_in_bytes(), R19_method); |
Goetz Lindenmaier | 46714a7 | 2014-12-09 11:57:46 +0100 | [diff] [blame] | 1863 | cmpwi(CCR0, tmp1, Bytecodes::_invokedynamic); |
| 1864 | cmpwi(CCR1, tmp1, Bytecodes::_invokehandle); |
Martin Doerr | 53821ff | 2015-01-12 11:14:49 +0100 | [diff] [blame] | 1865 | cror(CCR0, Assembler::equal, CCR1, Assembler::equal); |
Goetz Lindenmaier | 46714a7 | 2014-12-09 11:57:46 +0100 | [diff] [blame] | 1866 | cmpwi(CCR1, tmp2, vmIntrinsics::_compiledLambdaForm); |
Martin Doerr | 53821ff | 2015-01-12 11:14:49 +0100 | [diff] [blame] | 1867 | cror(CCR0, Assembler::equal, CCR1, Assembler::equal); |
Goetz Lindenmaier | 46714a7 | 2014-12-09 11:57:46 +0100 | [diff] [blame] | 1868 | bne(CCR0, profile_continue); |
| 1869 | } |
| 1870 | |
| 1871 | profile_obj_type(ret, R28_mdx, -in_bytes(ReturnTypeEntry::size()), tmp1, tmp2); |
| 1872 | |
| 1873 | align(32, 12); |
| 1874 | bind(profile_continue); |
| 1875 | } |
| 1876 | } |
| 1877 | |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 1878 | void InterpreterMacroAssembler::profile_parameters_type(Register tmp1, Register tmp2, |
| 1879 | Register tmp3, Register tmp4) { |
Goetz Lindenmaier | 46714a7 | 2014-12-09 11:57:46 +0100 | [diff] [blame] | 1880 | if (ProfileInterpreter && MethodData::profile_parameters()) { |
| 1881 | Label profile_continue, done; |
| 1882 | |
| 1883 | test_method_data_pointer(profile_continue); |
| 1884 | |
| 1885 | // Load the offset of the area within the MDO used for |
| 1886 | // parameters. If it's negative we're not profiling any parameters. |
| 1887 | lwz(tmp1, in_bytes(MethodData::parameters_type_data_di_offset()) - in_bytes(MethodData::data_offset()), R28_mdx); |
| 1888 | cmpwi(CCR0, tmp1, 0); |
| 1889 | blt(CCR0, profile_continue); |
| 1890 | |
| 1891 | // Compute a pointer to the area for parameters from the offset |
| 1892 | // and move the pointer to the slot for the last |
| 1893 | // parameters. Collect profiling from last parameter down. |
| 1894 | // mdo start + parameters offset + array length - 1 |
| 1895 | |
| 1896 | // Pointer to the parameter area in the MDO. |
| 1897 | const Register mdp = tmp1; |
| 1898 | add(mdp, tmp1, R28_mdx); |
| 1899 | |
Goetz Lindenmaier | 5827e6c | 2015-04-15 12:44:56 +0200 | [diff] [blame] | 1900 | // Offset of the current profile entry to update. |
Goetz Lindenmaier | 46714a7 | 2014-12-09 11:57:46 +0100 | [diff] [blame] | 1901 | const Register entry_offset = tmp2; |
| 1902 | // entry_offset = array len in number of cells |
| 1903 | ld(entry_offset, in_bytes(ArrayData::array_len_offset()), mdp); |
| 1904 | |
| 1905 | int off_base = in_bytes(ParametersTypeData::stack_slot_offset(0)); |
| 1906 | assert(off_base % DataLayout::cell_size == 0, "should be a number of cells"); |
| 1907 | |
| 1908 | // entry_offset (number of cells) = array len - size of 1 entry + offset of the stack slot field |
| 1909 | addi(entry_offset, entry_offset, -TypeStackSlotEntries::per_arg_count() + (off_base / DataLayout::cell_size)); |
| 1910 | // entry_offset in bytes |
| 1911 | sldi(entry_offset, entry_offset, exact_log2(DataLayout::cell_size)); |
| 1912 | |
| 1913 | Label loop; |
| 1914 | align(32, 12); |
| 1915 | bind(loop); |
| 1916 | |
| 1917 | // Load offset on the stack from the slot for this parameter. |
| 1918 | ld(tmp3, entry_offset, mdp); |
| 1919 | sldi(tmp3, tmp3, Interpreter::logStackElementSize); |
| 1920 | neg(tmp3, tmp3); |
| 1921 | // Read the parameter from the local area. |
| 1922 | ldx(tmp3, tmp3, R18_locals); |
| 1923 | |
| 1924 | // Make entry_offset now point to the type field for this parameter. |
| 1925 | int type_base = in_bytes(ParametersTypeData::type_offset(0)); |
| 1926 | assert(type_base > off_base, "unexpected"); |
| 1927 | addi(entry_offset, entry_offset, type_base - off_base); |
| 1928 | |
| 1929 | // Profile the parameter. |
| 1930 | profile_obj_type(tmp3, mdp, entry_offset, tmp4, tmp3); |
| 1931 | |
| 1932 | // Go to next parameter. |
| 1933 | int delta = TypeStackSlotEntries::per_arg_count() * DataLayout::cell_size + (type_base - off_base); |
| 1934 | cmpdi(CCR0, entry_offset, off_base + delta); |
| 1935 | addi(entry_offset, entry_offset, -delta); |
| 1936 | bge(CCR0, loop); |
| 1937 | |
| 1938 | align(32, 12); |
| 1939 | bind(profile_continue); |
| 1940 | } |
| 1941 | } |
| 1942 | |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 1943 | // Add a InterpMonitorElem to stack (see frame_sparc.hpp). |
| 1944 | void InterpreterMacroAssembler::add_monitor_to_stack(bool stack_is_empty, Register Rtemp1, Register Rtemp2) { |
| 1945 | |
| 1946 | // Very-local scratch registers. |
| 1947 | const Register esp = Rtemp1; |
| 1948 | const Register slot = Rtemp2; |
| 1949 | |
| 1950 | // Extracted monitor_size. |
| 1951 | int monitor_size = frame::interpreter_frame_monitor_size_in_bytes(); |
| 1952 | assert(Assembler::is_aligned((unsigned int)monitor_size, |
| 1953 | (unsigned int)frame::alignment_in_bytes), |
| 1954 | "size of a monitor must respect alignment of SP"); |
| 1955 | |
| 1956 | resize_frame(-monitor_size, /*temp*/esp); // Allocate space for new monitor |
| 1957 | std(R1_SP, _ijava_state_neg(top_frame_sp), esp); // esp contains fp |
| 1958 | |
| 1959 | // Shuffle expression stack down. Recall that stack_base points |
| 1960 | // just above the new expression stack bottom. Old_tos and new_tos |
| 1961 | // are used to scan thru the old and new expression stacks. |
| 1962 | if (!stack_is_empty) { |
| 1963 | Label copy_slot, copy_slot_finished; |
| 1964 | const Register n_slots = slot; |
| 1965 | |
| 1966 | addi(esp, R15_esp, Interpreter::stackElementSize); // Point to first element (pre-pushed stack). |
| 1967 | subf(n_slots, esp, R26_monitor); |
| 1968 | srdi_(n_slots, n_slots, LogBytesPerWord); // Compute number of slots to copy. |
| 1969 | assert(LogBytesPerWord == 3, "conflicts assembler instructions"); |
| 1970 | beq(CCR0, copy_slot_finished); // Nothing to copy. |
| 1971 | |
| 1972 | mtctr(n_slots); |
| 1973 | |
| 1974 | // loop |
| 1975 | bind(copy_slot); |
| 1976 | ld(slot, 0, esp); // Move expression stack down. |
| 1977 | std(slot, -monitor_size, esp); // distance = monitor_size |
| 1978 | addi(esp, esp, BytesPerWord); |
| 1979 | bdnz(copy_slot); |
| 1980 | |
| 1981 | bind(copy_slot_finished); |
| 1982 | } |
| 1983 | |
| 1984 | addi(R15_esp, R15_esp, -monitor_size); |
| 1985 | addi(R26_monitor, R26_monitor, -monitor_size); |
| 1986 | |
| 1987 | // Restart interpreter |
| 1988 | } |
| 1989 | |
| 1990 | // ============================================================================ |
| 1991 | // Java locals access |
| 1992 | |
| 1993 | // Load a local variable at index in Rindex into register Rdst_value. |
| 1994 | // Also puts address of local into Rdst_address as a service. |
| 1995 | // Kills: |
| 1996 | // - Rdst_value |
| 1997 | // - Rdst_address |
| 1998 | void InterpreterMacroAssembler::load_local_int(Register Rdst_value, Register Rdst_address, Register Rindex) { |
| 1999 | sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); |
| 2000 | subf(Rdst_address, Rdst_address, R18_locals); |
| 2001 | lwz(Rdst_value, 0, Rdst_address); |
| 2002 | } |
| 2003 | |
| 2004 | // Load a local variable at index in Rindex into register Rdst_value. |
| 2005 | // Also puts address of local into Rdst_address as a service. |
| 2006 | // Kills: |
| 2007 | // - Rdst_value |
| 2008 | // - Rdst_address |
| 2009 | void InterpreterMacroAssembler::load_local_long(Register Rdst_value, Register Rdst_address, Register Rindex) { |
| 2010 | sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); |
| 2011 | subf(Rdst_address, Rdst_address, R18_locals); |
| 2012 | ld(Rdst_value, -8, Rdst_address); |
| 2013 | } |
| 2014 | |
| 2015 | // Load a local variable at index in Rindex into register Rdst_value. |
| 2016 | // Also puts address of local into Rdst_address as a service. |
| 2017 | // Input: |
| 2018 | // - Rindex: slot nr of local variable |
| 2019 | // Kills: |
| 2020 | // - Rdst_value |
| 2021 | // - Rdst_address |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 2022 | void InterpreterMacroAssembler::load_local_ptr(Register Rdst_value, |
| 2023 | Register Rdst_address, |
| 2024 | Register Rindex) { |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 2025 | sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); |
| 2026 | subf(Rdst_address, Rdst_address, R18_locals); |
| 2027 | ld(Rdst_value, 0, Rdst_address); |
| 2028 | } |
| 2029 | |
| 2030 | // Load a local variable at index in Rindex into register Rdst_value. |
| 2031 | // Also puts address of local into Rdst_address as a service. |
| 2032 | // Kills: |
| 2033 | // - Rdst_value |
| 2034 | // - Rdst_address |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 2035 | void InterpreterMacroAssembler::load_local_float(FloatRegister Rdst_value, |
| 2036 | Register Rdst_address, |
| 2037 | Register Rindex) { |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 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 |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 2048 | void InterpreterMacroAssembler::load_local_double(FloatRegister Rdst_value, |
| 2049 | Register Rdst_address, |
| 2050 | Register Rindex) { |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 2051 | sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); |
| 2052 | subf(Rdst_address, Rdst_address, R18_locals); |
| 2053 | lfd(Rdst_value, -8, Rdst_address); |
| 2054 | } |
| 2055 | |
| 2056 | // Store an int value at local variable slot Rindex. |
| 2057 | // Kills: |
| 2058 | // - Rindex |
| 2059 | void InterpreterMacroAssembler::store_local_int(Register Rvalue, Register Rindex) { |
| 2060 | sldi(Rindex, Rindex, Interpreter::logStackElementSize); |
| 2061 | subf(Rindex, Rindex, R18_locals); |
| 2062 | stw(Rvalue, 0, Rindex); |
| 2063 | } |
| 2064 | |
| 2065 | // Store a long value at local variable slot Rindex. |
| 2066 | // Kills: |
| 2067 | // - Rindex |
| 2068 | void InterpreterMacroAssembler::store_local_long(Register Rvalue, Register Rindex) { |
| 2069 | sldi(Rindex, Rindex, Interpreter::logStackElementSize); |
| 2070 | subf(Rindex, Rindex, R18_locals); |
| 2071 | std(Rvalue, -8, Rindex); |
| 2072 | } |
| 2073 | |
| 2074 | // Store an oop value at local variable slot Rindex. |
| 2075 | // Kills: |
| 2076 | // - Rindex |
| 2077 | void InterpreterMacroAssembler::store_local_ptr(Register Rvalue, Register Rindex) { |
| 2078 | sldi(Rindex, Rindex, Interpreter::logStackElementSize); |
| 2079 | subf(Rindex, Rindex, R18_locals); |
| 2080 | std(Rvalue, 0, Rindex); |
| 2081 | } |
| 2082 | |
| 2083 | // Store an int value at local variable slot Rindex. |
| 2084 | // Kills: |
| 2085 | // - Rindex |
| 2086 | void InterpreterMacroAssembler::store_local_float(FloatRegister Rvalue, Register Rindex) { |
| 2087 | sldi(Rindex, Rindex, Interpreter::logStackElementSize); |
| 2088 | subf(Rindex, Rindex, R18_locals); |
| 2089 | stfs(Rvalue, 0, Rindex); |
| 2090 | } |
| 2091 | |
| 2092 | // Store an int value at local variable slot Rindex. |
| 2093 | // Kills: |
| 2094 | // - Rindex |
| 2095 | void InterpreterMacroAssembler::store_local_double(FloatRegister Rvalue, Register Rindex) { |
| 2096 | sldi(Rindex, Rindex, Interpreter::logStackElementSize); |
| 2097 | subf(Rindex, Rindex, R18_locals); |
| 2098 | stfd(Rvalue, -8, Rindex); |
| 2099 | } |
| 2100 | |
| 2101 | // Read pending exception from thread and jump to interpreter. |
| 2102 | // Throw exception entry if one if pending. Fall through otherwise. |
| 2103 | void InterpreterMacroAssembler::check_and_forward_exception(Register Rscratch1, Register Rscratch2) { |
| 2104 | assert_different_registers(Rscratch1, Rscratch2, R3); |
| 2105 | Register Rexception = Rscratch1; |
| 2106 | Register Rtmp = Rscratch2; |
| 2107 | Label Ldone; |
| 2108 | // Get pending exception oop. |
| 2109 | ld(Rexception, thread_(pending_exception)); |
| 2110 | cmpdi(CCR0, Rexception, 0); |
| 2111 | beq(CCR0, Ldone); |
| 2112 | li(Rtmp, 0); |
| 2113 | mr_if_needed(R3, Rexception); |
| 2114 | std(Rtmp, thread_(pending_exception)); // Clear exception in thread |
| 2115 | if (Interpreter::rethrow_exception_entry() != NULL) { |
| 2116 | // Already got entry address. |
| 2117 | load_dispatch_table(Rtmp, (address*)Interpreter::rethrow_exception_entry()); |
| 2118 | } else { |
| 2119 | // Dynamically load entry address. |
| 2120 | int simm16_rest = load_const_optimized(Rtmp, &Interpreter::_rethrow_exception_entry, R0, true); |
| 2121 | ld(Rtmp, simm16_rest, Rtmp); |
| 2122 | } |
| 2123 | mtctr(Rtmp); |
| 2124 | save_interpreter_state(Rtmp); |
| 2125 | bctr(); |
| 2126 | |
| 2127 | align(32, 12); |
| 2128 | bind(Ldone); |
| 2129 | } |
| 2130 | |
| 2131 | void InterpreterMacroAssembler::call_VM(Register oop_result, address entry_point, bool check_exceptions) { |
| 2132 | save_interpreter_state(R11_scratch1); |
| 2133 | |
| 2134 | MacroAssembler::call_VM(oop_result, entry_point, false); |
| 2135 | |
| 2136 | restore_interpreter_state(R11_scratch1, /*bcp_and_mdx_only*/ true); |
| 2137 | |
| 2138 | check_and_handle_popframe(R11_scratch1); |
| 2139 | check_and_handle_earlyret(R11_scratch1); |
| 2140 | // Now check exceptions manually. |
| 2141 | if (check_exceptions) { |
| 2142 | check_and_forward_exception(R11_scratch1, R12_scratch2); |
| 2143 | } |
| 2144 | } |
| 2145 | |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 2146 | void InterpreterMacroAssembler::call_VM(Register oop_result, address entry_point, |
| 2147 | Register arg_1, bool check_exceptions) { |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 2148 | // ARG1 is reserved for the thread. |
| 2149 | mr_if_needed(R4_ARG2, arg_1); |
| 2150 | call_VM(oop_result, entry_point, check_exceptions); |
| 2151 | } |
| 2152 | |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 2153 | void InterpreterMacroAssembler::call_VM(Register oop_result, address entry_point, |
| 2154 | Register arg_1, Register arg_2, |
| 2155 | bool check_exceptions) { |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 2156 | // ARG1 is reserved for the thread. |
| 2157 | mr_if_needed(R4_ARG2, arg_1); |
| 2158 | assert(arg_2 != R4_ARG2, "smashed argument"); |
| 2159 | mr_if_needed(R5_ARG3, arg_2); |
| 2160 | call_VM(oop_result, entry_point, check_exceptions); |
| 2161 | } |
| 2162 | |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 2163 | void InterpreterMacroAssembler::call_VM(Register oop_result, address entry_point, |
| 2164 | Register arg_1, Register arg_2, Register arg_3, |
| 2165 | bool check_exceptions) { |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 2166 | // ARG1 is reserved for the thread. |
| 2167 | mr_if_needed(R4_ARG2, arg_1); |
| 2168 | assert(arg_2 != R4_ARG2, "smashed argument"); |
| 2169 | mr_if_needed(R5_ARG3, arg_2); |
| 2170 | assert(arg_3 != R4_ARG2 && arg_3 != R5_ARG3, "smashed argument"); |
| 2171 | mr_if_needed(R6_ARG4, arg_3); |
| 2172 | call_VM(oop_result, entry_point, check_exceptions); |
| 2173 | } |
| 2174 | |
| 2175 | void InterpreterMacroAssembler::save_interpreter_state(Register scratch) { |
| 2176 | ld(scratch, 0, R1_SP); |
| 2177 | std(R15_esp, _ijava_state_neg(esp), scratch); |
| 2178 | std(R14_bcp, _ijava_state_neg(bcp), scratch); |
| 2179 | std(R26_monitor, _ijava_state_neg(monitors), scratch); |
| 2180 | if (ProfileInterpreter) { std(R28_mdx, _ijava_state_neg(mdx), scratch); } |
| 2181 | // Other entries should be unchanged. |
| 2182 | } |
| 2183 | |
| 2184 | void InterpreterMacroAssembler::restore_interpreter_state(Register scratch, bool bcp_and_mdx_only) { |
| 2185 | ld(scratch, 0, R1_SP); |
| 2186 | ld(R14_bcp, _ijava_state_neg(bcp), scratch); // Changed by VM code (exception). |
| 2187 | if (ProfileInterpreter) { ld(R28_mdx, _ijava_state_neg(mdx), scratch); } // Changed by VM code. |
| 2188 | if (!bcp_and_mdx_only) { |
| 2189 | // Following ones are Metadata. |
| 2190 | ld(R19_method, _ijava_state_neg(method), scratch); |
| 2191 | ld(R27_constPoolCache, _ijava_state_neg(cpoolCache), scratch); |
| 2192 | // Following ones are stack addresses and don't require reload. |
| 2193 | ld(R15_esp, _ijava_state_neg(esp), scratch); |
| 2194 | ld(R18_locals, _ijava_state_neg(locals), scratch); |
| 2195 | ld(R26_monitor, _ijava_state_neg(monitors), scratch); |
| 2196 | } |
| 2197 | #ifdef ASSERT |
| 2198 | { |
| 2199 | Label Lok; |
| 2200 | subf(R0, R1_SP, scratch); |
| 2201 | cmpdi(CCR0, R0, frame::abi_reg_args_size + frame::ijava_state_size); |
| 2202 | bge(CCR0, Lok); |
| 2203 | stop("frame too small (restore istate)", 0x5432); |
| 2204 | bind(Lok); |
| 2205 | } |
| 2206 | { |
| 2207 | Label Lok; |
| 2208 | ld(R0, _ijava_state_neg(ijava_reserved), scratch); |
| 2209 | cmpdi(CCR0, R0, 0x5afe); |
| 2210 | beq(CCR0, Lok); |
| 2211 | stop("frame corrupted (restore istate)", 0x5afe); |
| 2212 | bind(Lok); |
| 2213 | } |
| 2214 | #endif |
| 2215 | } |
| 2216 | |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 2217 | void InterpreterMacroAssembler::get_method_counters(Register method, |
| 2218 | Register Rcounters, |
| 2219 | Label& skip) { |
| 2220 | BLOCK_COMMENT("Load and ev. allocate counter object {"); |
| 2221 | Label has_counters; |
| 2222 | ld(Rcounters, in_bytes(Method::method_counters_offset()), method); |
| 2223 | cmpdi(CCR0, Rcounters, 0); |
| 2224 | bne(CCR0, has_counters); |
| 2225 | call_VM(noreg, CAST_FROM_FN_PTR(address, |
| 2226 | InterpreterRuntime::build_method_counters), method, false); |
| 2227 | ld(Rcounters, in_bytes(Method::method_counters_offset()), method); |
| 2228 | cmpdi(CCR0, Rcounters, 0); |
| 2229 | beq(CCR0, skip); // No MethodCounters, OutOfMemory. |
| 2230 | BLOCK_COMMENT("} Load and ev. allocate counter object"); |
| 2231 | |
| 2232 | bind(has_counters); |
| 2233 | } |
| 2234 | |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 2235 | void InterpreterMacroAssembler::increment_invocation_counter(Register Rcounters, |
| 2236 | Register iv_be_count, |
| 2237 | Register Rtmp_r0) { |
Goetz Lindenmaier | fdbe749 | 2015-07-29 15:08:42 -0700 | [diff] [blame] | 2238 | assert(UseCompiler || LogTouchedMethods, "incrementing must be useful"); |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 2239 | Register invocation_count = iv_be_count; |
| 2240 | Register backedge_count = Rtmp_r0; |
| 2241 | int delta = InvocationCounter::count_increment; |
| 2242 | |
| 2243 | // Load each counter in a register. |
| 2244 | // ld(inv_counter, Rtmp); |
| 2245 | // ld(be_counter, Rtmp2); |
| 2246 | int inv_counter_offset = in_bytes(MethodCounters::invocation_counter_offset() + |
| 2247 | InvocationCounter::counter_offset()); |
| 2248 | int be_counter_offset = in_bytes(MethodCounters::backedge_counter_offset() + |
| 2249 | InvocationCounter::counter_offset()); |
| 2250 | |
| 2251 | BLOCK_COMMENT("Increment profiling counters {"); |
| 2252 | |
| 2253 | // Load the backedge counter. |
| 2254 | lwz(backedge_count, be_counter_offset, Rcounters); // is unsigned int |
| 2255 | // Mask the backedge counter. |
Martin Doerr | 8c5da27 | 2015-12-04 16:38:04 +0100 | [diff] [blame] | 2256 | andi(backedge_count, backedge_count, InvocationCounter::count_mask_value); |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 2257 | |
| 2258 | // Load the invocation counter. |
| 2259 | lwz(invocation_count, inv_counter_offset, Rcounters); // is unsigned int |
| 2260 | // Add the delta to the invocation counter and store the result. |
| 2261 | addi(invocation_count, invocation_count, delta); |
| 2262 | // Store value. |
| 2263 | stw(invocation_count, inv_counter_offset, Rcounters); |
| 2264 | |
| 2265 | // Add invocation counter + backedge counter. |
| 2266 | add(iv_be_count, backedge_count, invocation_count); |
| 2267 | |
| 2268 | // Note that this macro must leave the backedge_count + invocation_count in |
| 2269 | // register iv_be_count! |
| 2270 | BLOCK_COMMENT("} Increment profiling counters"); |
| 2271 | } |
| 2272 | |
| 2273 | void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) { |
| 2274 | if (state == atos) { MacroAssembler::verify_oop(reg); } |
| 2275 | } |
| 2276 | |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 2277 | // Local helper function for the verify_oop_or_return_address macro. |
| 2278 | static bool verify_return_address(Method* m, int bci) { |
| 2279 | #ifndef PRODUCT |
| 2280 | address pc = (address)(m->constMethod()) + in_bytes(ConstMethod::codes_offset()) + bci; |
| 2281 | // Assume it is a valid return address if it is inside m and is preceded by a jsr. |
| 2282 | if (!m->contains(pc)) return false; |
| 2283 | address jsr_pc; |
| 2284 | jsr_pc = pc - Bytecodes::length_for(Bytecodes::_jsr); |
| 2285 | if (*jsr_pc == Bytecodes::_jsr && jsr_pc >= m->code_base()) return true; |
| 2286 | jsr_pc = pc - Bytecodes::length_for(Bytecodes::_jsr_w); |
| 2287 | if (*jsr_pc == Bytecodes::_jsr_w && jsr_pc >= m->code_base()) return true; |
| 2288 | #endif // PRODUCT |
| 2289 | return false; |
| 2290 | } |
| 2291 | |
| 2292 | void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { |
| 2293 | if (VerifyFPU) { |
| 2294 | unimplemented("verfiyFPU"); |
| 2295 | } |
| 2296 | } |
| 2297 | |
| 2298 | void InterpreterMacroAssembler::verify_oop_or_return_address(Register reg, Register Rtmp) { |
| 2299 | if (!VerifyOops) return; |
| 2300 | |
| 2301 | // The VM documentation for the astore[_wide] bytecode allows |
| 2302 | // the TOS to be not only an oop but also a return address. |
| 2303 | Label test; |
| 2304 | Label skip; |
| 2305 | // See if it is an address (in the current method): |
| 2306 | |
| 2307 | const int log2_bytecode_size_limit = 16; |
| 2308 | srdi_(Rtmp, reg, log2_bytecode_size_limit); |
| 2309 | bne(CCR0, test); |
| 2310 | |
| 2311 | address fd = CAST_FROM_FN_PTR(address, verify_return_address); |
Martin Doerr | 8c5da27 | 2015-12-04 16:38:04 +0100 | [diff] [blame] | 2312 | const int nbytes_save = MacroAssembler::num_volatile_regs * 8; |
Goetz Lindenmaier | 46714a7 | 2014-12-09 11:57:46 +0100 | [diff] [blame] | 2313 | save_volatile_gprs(R1_SP, -nbytes_save); // except R0 |
| 2314 | save_LR_CR(Rtmp); // Save in old frame. |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 2315 | push_frame_reg_args(nbytes_save, Rtmp); |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 2316 | |
| 2317 | load_const_optimized(Rtmp, fd, R0); |
| 2318 | mr_if_needed(R4_ARG2, reg); |
| 2319 | mr(R3_ARG1, R19_method); |
| 2320 | call_c(Rtmp); // call C |
| 2321 | |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 2322 | pop_frame(); |
| 2323 | restore_LR_CR(Rtmp); |
Goetz Lindenmaier | 46714a7 | 2014-12-09 11:57:46 +0100 | [diff] [blame] | 2324 | restore_volatile_gprs(R1_SP, -nbytes_save); // except R0 |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 2325 | b(skip); |
| 2326 | |
| 2327 | // Perform a more elaborate out-of-line call. |
| 2328 | // Not an address; verify it: |
| 2329 | bind(test); |
| 2330 | verify_oop(reg); |
| 2331 | bind(skip); |
| 2332 | } |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 2333 | |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 2334 | // Inline assembly for: |
| 2335 | // |
| 2336 | // if (thread is in interp_only_mode) { |
| 2337 | // InterpreterRuntime::post_method_entry(); |
| 2338 | // } |
| 2339 | // if (*jvmpi::event_flags_array_at_addr(JVMPI_EVENT_METHOD_ENTRY ) || |
| 2340 | // *jvmpi::event_flags_array_at_addr(JVMPI_EVENT_METHOD_ENTRY2) ) { |
| 2341 | // SharedRuntime::jvmpi_method_entry(method, receiver); |
| 2342 | // } |
| 2343 | void InterpreterMacroAssembler::notify_method_entry() { |
| 2344 | // JVMTI |
| 2345 | // Whenever JVMTI puts a thread in interp_only_mode, method |
| 2346 | // entry/exit events are sent for that thread to track stack |
| 2347 | // depth. If it is possible to enter interp_only_mode we add |
| 2348 | // the code to check if the event should be sent. |
| 2349 | if (JvmtiExport::can_post_interpreter_events()) { |
| 2350 | Label jvmti_post_done; |
| 2351 | |
| 2352 | lwz(R0, in_bytes(JavaThread::interp_only_mode_offset()), R16_thread); |
| 2353 | cmpwi(CCR0, R0, 0); |
| 2354 | beq(CCR0, jvmti_post_done); |
| 2355 | call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry), |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 2356 | /*check_exceptions=*/true); |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 2357 | |
| 2358 | bind(jvmti_post_done); |
| 2359 | } |
| 2360 | } |
| 2361 | |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 2362 | // Inline assembly for: |
| 2363 | // |
| 2364 | // if (thread is in interp_only_mode) { |
| 2365 | // // save result |
| 2366 | // InterpreterRuntime::post_method_exit(); |
| 2367 | // // restore result |
| 2368 | // } |
| 2369 | // if (*jvmpi::event_flags_array_at_addr(JVMPI_EVENT_METHOD_EXIT)) { |
| 2370 | // // save result |
| 2371 | // SharedRuntime::jvmpi_method_exit(); |
| 2372 | // // restore result |
| 2373 | // } |
| 2374 | // |
| 2375 | // Native methods have their result stored in d_tmp and l_tmp. |
| 2376 | // Java methods have their result stored in the expression stack. |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 2377 | void InterpreterMacroAssembler::notify_method_exit(bool is_native_method, TosState state, |
| 2378 | NotifyMethodExitMode mode, bool check_exceptions) { |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 2379 | // JVMTI |
| 2380 | // Whenever JVMTI puts a thread in interp_only_mode, method |
| 2381 | // entry/exit events are sent for that thread to track stack |
| 2382 | // depth. If it is possible to enter interp_only_mode we add |
| 2383 | // the code to check if the event should be sent. |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 2384 | if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) { |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 2385 | Label jvmti_post_done; |
| 2386 | |
| 2387 | lwz(R0, in_bytes(JavaThread::interp_only_mode_offset()), R16_thread); |
| 2388 | cmpwi(CCR0, R0, 0); |
| 2389 | beq(CCR0, jvmti_post_done); |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 2390 | if (!is_native_method) { push(state); } // Expose tos to GC. |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 2391 | call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit), |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 2392 | /*check_exceptions=*/check_exceptions); |
Goetz Lindenmaier | 39e280e | 2015-12-10 16:18:25 +0100 | [diff] [blame] | 2393 | if (!is_native_method) { pop(state); } |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 2394 | |
Goetz Lindenmaier | 7d56518 | 2013-12-11 00:06:11 +0100 | [diff] [blame] | 2395 | align(32, 12); |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 2396 | bind(jvmti_post_done); |
| 2397 | } |
Axel Siebenborn | faad788 | 2014-03-10 12:58:02 +0100 | [diff] [blame] | 2398 | |
| 2399 | // Dtrace support not implemented. |
Goetz Lindenmaier | cf98cb0 | 2013-08-02 16:46:45 +0200 | [diff] [blame] | 2400 | } |
| 2401 | |