Wed, 27 Apr 2016 01:25:04 +0800
Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * Copyright 2012, 2014 SAP AG. All rights reserved. |
aoqi@0 | 4 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 5 | * |
aoqi@0 | 6 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 7 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 8 | * published by the Free Software Foundation. |
aoqi@0 | 9 | * |
aoqi@0 | 10 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 13 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 14 | * accompanied this code). |
aoqi@0 | 15 | * |
aoqi@0 | 16 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 17 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 18 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 19 | * |
aoqi@0 | 20 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 21 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 22 | * questions. |
aoqi@0 | 23 | * |
aoqi@0 | 24 | */ |
aoqi@0 | 25 | |
aoqi@0 | 26 | #include "precompiled.hpp" |
aoqi@0 | 27 | #include "asm/macroAssembler.inline.hpp" |
aoqi@0 | 28 | #include "code/debugInfoRec.hpp" |
aoqi@0 | 29 | #include "code/icBuffer.hpp" |
aoqi@0 | 30 | #include "code/vtableStubs.hpp" |
aoqi@0 | 31 | #include "interpreter/interpreter.hpp" |
aoqi@0 | 32 | #include "oops/compiledICHolder.hpp" |
aoqi@0 | 33 | #include "prims/jvmtiRedefineClassesTrace.hpp" |
aoqi@0 | 34 | #include "runtime/sharedRuntime.hpp" |
aoqi@0 | 35 | #include "runtime/vframeArray.hpp" |
aoqi@0 | 36 | #include "vmreg_ppc.inline.hpp" |
aoqi@0 | 37 | #include "adfiles/ad_ppc_64.hpp" |
aoqi@0 | 38 | #ifdef COMPILER1 |
aoqi@0 | 39 | #include "c1/c1_Runtime1.hpp" |
aoqi@0 | 40 | #endif |
aoqi@0 | 41 | #ifdef COMPILER2 |
aoqi@0 | 42 | #include "opto/runtime.hpp" |
aoqi@0 | 43 | #endif |
aoqi@0 | 44 | |
aoqi@0 | 45 | #define __ masm-> |
aoqi@0 | 46 | |
aoqi@0 | 47 | #ifdef PRODUCT |
aoqi@0 | 48 | #define BLOCK_COMMENT(str) // nothing |
aoqi@0 | 49 | #else |
aoqi@0 | 50 | #define BLOCK_COMMENT(str) __ block_comment(str) |
aoqi@0 | 51 | #endif |
aoqi@0 | 52 | |
aoqi@0 | 53 | #define BIND(label) bind(label); BLOCK_COMMENT(#label ":") |
aoqi@0 | 54 | |
aoqi@0 | 55 | |
aoqi@0 | 56 | class RegisterSaver { |
aoqi@0 | 57 | // Used for saving volatile registers. |
aoqi@0 | 58 | public: |
aoqi@0 | 59 | |
aoqi@0 | 60 | // Support different return pc locations. |
aoqi@0 | 61 | enum ReturnPCLocation { |
aoqi@0 | 62 | return_pc_is_lr, |
aoqi@0 | 63 | return_pc_is_r4, |
aoqi@0 | 64 | return_pc_is_thread_saved_exception_pc |
aoqi@0 | 65 | }; |
aoqi@0 | 66 | |
aoqi@0 | 67 | static OopMap* push_frame_reg_args_and_save_live_registers(MacroAssembler* masm, |
aoqi@0 | 68 | int* out_frame_size_in_bytes, |
aoqi@0 | 69 | bool generate_oop_map, |
aoqi@0 | 70 | int return_pc_adjustment, |
aoqi@0 | 71 | ReturnPCLocation return_pc_location); |
aoqi@0 | 72 | static void restore_live_registers_and_pop_frame(MacroAssembler* masm, |
aoqi@0 | 73 | int frame_size_in_bytes, |
aoqi@0 | 74 | bool restore_ctr); |
aoqi@0 | 75 | |
aoqi@0 | 76 | static void push_frame_and_save_argument_registers(MacroAssembler* masm, |
aoqi@0 | 77 | Register r_temp, |
aoqi@0 | 78 | int frame_size, |
aoqi@0 | 79 | int total_args, |
aoqi@0 | 80 | const VMRegPair *regs, const VMRegPair *regs2 = NULL); |
aoqi@0 | 81 | static void restore_argument_registers_and_pop_frame(MacroAssembler*masm, |
aoqi@0 | 82 | int frame_size, |
aoqi@0 | 83 | int total_args, |
aoqi@0 | 84 | const VMRegPair *regs, const VMRegPair *regs2 = NULL); |
aoqi@0 | 85 | |
aoqi@0 | 86 | // During deoptimization only the result registers need to be restored |
aoqi@0 | 87 | // all the other values have already been extracted. |
aoqi@0 | 88 | static void restore_result_registers(MacroAssembler* masm, int frame_size_in_bytes); |
aoqi@0 | 89 | |
aoqi@0 | 90 | // Constants and data structures: |
aoqi@0 | 91 | |
aoqi@0 | 92 | typedef enum { |
aoqi@0 | 93 | int_reg = 0, |
aoqi@0 | 94 | float_reg = 1, |
aoqi@0 | 95 | special_reg = 2 |
aoqi@0 | 96 | } RegisterType; |
aoqi@0 | 97 | |
aoqi@0 | 98 | typedef enum { |
aoqi@0 | 99 | reg_size = 8, |
aoqi@0 | 100 | half_reg_size = reg_size / 2, |
aoqi@0 | 101 | } RegisterConstants; |
aoqi@0 | 102 | |
aoqi@0 | 103 | typedef struct { |
aoqi@0 | 104 | RegisterType reg_type; |
aoqi@0 | 105 | int reg_num; |
aoqi@0 | 106 | VMReg vmreg; |
aoqi@0 | 107 | } LiveRegType; |
aoqi@0 | 108 | }; |
aoqi@0 | 109 | |
aoqi@0 | 110 | |
aoqi@0 | 111 | #define RegisterSaver_LiveSpecialReg(regname) \ |
aoqi@0 | 112 | { RegisterSaver::special_reg, regname->encoding(), regname->as_VMReg() } |
aoqi@0 | 113 | |
aoqi@0 | 114 | #define RegisterSaver_LiveIntReg(regname) \ |
aoqi@0 | 115 | { RegisterSaver::int_reg, regname->encoding(), regname->as_VMReg() } |
aoqi@0 | 116 | |
aoqi@0 | 117 | #define RegisterSaver_LiveFloatReg(regname) \ |
aoqi@0 | 118 | { RegisterSaver::float_reg, regname->encoding(), regname->as_VMReg() } |
aoqi@0 | 119 | |
aoqi@0 | 120 | static const RegisterSaver::LiveRegType RegisterSaver_LiveRegs[] = { |
aoqi@0 | 121 | // Live registers which get spilled to the stack. Register |
aoqi@0 | 122 | // positions in this array correspond directly to the stack layout. |
aoqi@0 | 123 | |
aoqi@0 | 124 | // |
aoqi@0 | 125 | // live special registers: |
aoqi@0 | 126 | // |
aoqi@0 | 127 | RegisterSaver_LiveSpecialReg(SR_CTR), |
aoqi@0 | 128 | // |
aoqi@0 | 129 | // live float registers: |
aoqi@0 | 130 | // |
aoqi@0 | 131 | RegisterSaver_LiveFloatReg( F0 ), |
aoqi@0 | 132 | RegisterSaver_LiveFloatReg( F1 ), |
aoqi@0 | 133 | RegisterSaver_LiveFloatReg( F2 ), |
aoqi@0 | 134 | RegisterSaver_LiveFloatReg( F3 ), |
aoqi@0 | 135 | RegisterSaver_LiveFloatReg( F4 ), |
aoqi@0 | 136 | RegisterSaver_LiveFloatReg( F5 ), |
aoqi@0 | 137 | RegisterSaver_LiveFloatReg( F6 ), |
aoqi@0 | 138 | RegisterSaver_LiveFloatReg( F7 ), |
aoqi@0 | 139 | RegisterSaver_LiveFloatReg( F8 ), |
aoqi@0 | 140 | RegisterSaver_LiveFloatReg( F9 ), |
aoqi@0 | 141 | RegisterSaver_LiveFloatReg( F10 ), |
aoqi@0 | 142 | RegisterSaver_LiveFloatReg( F11 ), |
aoqi@0 | 143 | RegisterSaver_LiveFloatReg( F12 ), |
aoqi@0 | 144 | RegisterSaver_LiveFloatReg( F13 ), |
aoqi@0 | 145 | RegisterSaver_LiveFloatReg( F14 ), |
aoqi@0 | 146 | RegisterSaver_LiveFloatReg( F15 ), |
aoqi@0 | 147 | RegisterSaver_LiveFloatReg( F16 ), |
aoqi@0 | 148 | RegisterSaver_LiveFloatReg( F17 ), |
aoqi@0 | 149 | RegisterSaver_LiveFloatReg( F18 ), |
aoqi@0 | 150 | RegisterSaver_LiveFloatReg( F19 ), |
aoqi@0 | 151 | RegisterSaver_LiveFloatReg( F20 ), |
aoqi@0 | 152 | RegisterSaver_LiveFloatReg( F21 ), |
aoqi@0 | 153 | RegisterSaver_LiveFloatReg( F22 ), |
aoqi@0 | 154 | RegisterSaver_LiveFloatReg( F23 ), |
aoqi@0 | 155 | RegisterSaver_LiveFloatReg( F24 ), |
aoqi@0 | 156 | RegisterSaver_LiveFloatReg( F25 ), |
aoqi@0 | 157 | RegisterSaver_LiveFloatReg( F26 ), |
aoqi@0 | 158 | RegisterSaver_LiveFloatReg( F27 ), |
aoqi@0 | 159 | RegisterSaver_LiveFloatReg( F28 ), |
aoqi@0 | 160 | RegisterSaver_LiveFloatReg( F29 ), |
aoqi@0 | 161 | RegisterSaver_LiveFloatReg( F30 ), |
aoqi@0 | 162 | RegisterSaver_LiveFloatReg( F31 ), |
aoqi@0 | 163 | // |
aoqi@0 | 164 | // live integer registers: |
aoqi@0 | 165 | // |
aoqi@0 | 166 | RegisterSaver_LiveIntReg( R0 ), |
aoqi@0 | 167 | //RegisterSaver_LiveIntReg( R1 ), // stack pointer |
aoqi@0 | 168 | RegisterSaver_LiveIntReg( R2 ), |
aoqi@0 | 169 | RegisterSaver_LiveIntReg( R3 ), |
aoqi@0 | 170 | RegisterSaver_LiveIntReg( R4 ), |
aoqi@0 | 171 | RegisterSaver_LiveIntReg( R5 ), |
aoqi@0 | 172 | RegisterSaver_LiveIntReg( R6 ), |
aoqi@0 | 173 | RegisterSaver_LiveIntReg( R7 ), |
aoqi@0 | 174 | RegisterSaver_LiveIntReg( R8 ), |
aoqi@0 | 175 | RegisterSaver_LiveIntReg( R9 ), |
aoqi@0 | 176 | RegisterSaver_LiveIntReg( R10 ), |
aoqi@0 | 177 | RegisterSaver_LiveIntReg( R11 ), |
aoqi@0 | 178 | RegisterSaver_LiveIntReg( R12 ), |
aoqi@0 | 179 | //RegisterSaver_LiveIntReg( R13 ), // system thread id |
aoqi@0 | 180 | RegisterSaver_LiveIntReg( R14 ), |
aoqi@0 | 181 | RegisterSaver_LiveIntReg( R15 ), |
aoqi@0 | 182 | RegisterSaver_LiveIntReg( R16 ), |
aoqi@0 | 183 | RegisterSaver_LiveIntReg( R17 ), |
aoqi@0 | 184 | RegisterSaver_LiveIntReg( R18 ), |
aoqi@0 | 185 | RegisterSaver_LiveIntReg( R19 ), |
aoqi@0 | 186 | RegisterSaver_LiveIntReg( R20 ), |
aoqi@0 | 187 | RegisterSaver_LiveIntReg( R21 ), |
aoqi@0 | 188 | RegisterSaver_LiveIntReg( R22 ), |
aoqi@0 | 189 | RegisterSaver_LiveIntReg( R23 ), |
aoqi@0 | 190 | RegisterSaver_LiveIntReg( R24 ), |
aoqi@0 | 191 | RegisterSaver_LiveIntReg( R25 ), |
aoqi@0 | 192 | RegisterSaver_LiveIntReg( R26 ), |
aoqi@0 | 193 | RegisterSaver_LiveIntReg( R27 ), |
aoqi@0 | 194 | RegisterSaver_LiveIntReg( R28 ), |
aoqi@0 | 195 | RegisterSaver_LiveIntReg( R29 ), |
aoqi@0 | 196 | RegisterSaver_LiveIntReg( R31 ), |
aoqi@0 | 197 | RegisterSaver_LiveIntReg( R30 ), // r30 must be the last register |
aoqi@0 | 198 | }; |
aoqi@0 | 199 | |
aoqi@0 | 200 | OopMap* RegisterSaver::push_frame_reg_args_and_save_live_registers(MacroAssembler* masm, |
aoqi@0 | 201 | int* out_frame_size_in_bytes, |
aoqi@0 | 202 | bool generate_oop_map, |
aoqi@0 | 203 | int return_pc_adjustment, |
aoqi@0 | 204 | ReturnPCLocation return_pc_location) { |
aoqi@0 | 205 | // Push an abi_reg_args-frame and store all registers which may be live. |
aoqi@0 | 206 | // If requested, create an OopMap: Record volatile registers as |
aoqi@0 | 207 | // callee-save values in an OopMap so their save locations will be |
aoqi@0 | 208 | // propagated to the RegisterMap of the caller frame during |
aoqi@0 | 209 | // StackFrameStream construction (needed for deoptimization; see |
aoqi@0 | 210 | // compiledVFrame::create_stack_value). |
aoqi@0 | 211 | // If return_pc_adjustment != 0 adjust the return pc by return_pc_adjustment. |
aoqi@0 | 212 | |
aoqi@0 | 213 | int i; |
aoqi@0 | 214 | int offset; |
aoqi@0 | 215 | |
aoqi@0 | 216 | // calcualte frame size |
aoqi@0 | 217 | const int regstosave_num = sizeof(RegisterSaver_LiveRegs) / |
aoqi@0 | 218 | sizeof(RegisterSaver::LiveRegType); |
aoqi@0 | 219 | const int register_save_size = regstosave_num * reg_size; |
aoqi@0 | 220 | const int frame_size_in_bytes = round_to(register_save_size, frame::alignment_in_bytes) |
aoqi@0 | 221 | + frame::abi_reg_args_size; |
aoqi@0 | 222 | *out_frame_size_in_bytes = frame_size_in_bytes; |
aoqi@0 | 223 | const int frame_size_in_slots = frame_size_in_bytes / sizeof(jint); |
aoqi@0 | 224 | const int register_save_offset = frame_size_in_bytes - register_save_size; |
aoqi@0 | 225 | |
aoqi@0 | 226 | // OopMap frame size is in c2 stack slots (sizeof(jint)) not bytes or words. |
aoqi@0 | 227 | OopMap* map = generate_oop_map ? new OopMap(frame_size_in_slots, 0) : NULL; |
aoqi@0 | 228 | |
aoqi@0 | 229 | BLOCK_COMMENT("push_frame_reg_args_and_save_live_registers {"); |
aoqi@0 | 230 | |
aoqi@0 | 231 | // Save r30 in the last slot of the not yet pushed frame so that we |
aoqi@0 | 232 | // can use it as scratch reg. |
aoqi@0 | 233 | __ std(R30, -reg_size, R1_SP); |
aoqi@0 | 234 | assert(-reg_size == register_save_offset - frame_size_in_bytes + ((regstosave_num-1)*reg_size), |
aoqi@0 | 235 | "consistency check"); |
aoqi@0 | 236 | |
aoqi@0 | 237 | // save the flags |
aoqi@0 | 238 | // Do the save_LR_CR by hand and adjust the return pc if requested. |
aoqi@0 | 239 | __ mfcr(R30); |
aoqi@0 | 240 | __ std(R30, _abi(cr), R1_SP); |
aoqi@0 | 241 | switch (return_pc_location) { |
aoqi@0 | 242 | case return_pc_is_lr: __ mflr(R30); break; |
aoqi@0 | 243 | case return_pc_is_r4: __ mr(R30, R4); break; |
aoqi@0 | 244 | case return_pc_is_thread_saved_exception_pc: |
aoqi@0 | 245 | __ ld(R30, thread_(saved_exception_pc)); break; |
aoqi@0 | 246 | default: ShouldNotReachHere(); |
aoqi@0 | 247 | } |
aoqi@0 | 248 | if (return_pc_adjustment != 0) |
aoqi@0 | 249 | __ addi(R30, R30, return_pc_adjustment); |
aoqi@0 | 250 | __ std(R30, _abi(lr), R1_SP); |
aoqi@0 | 251 | |
aoqi@0 | 252 | // push a new frame |
aoqi@0 | 253 | __ push_frame(frame_size_in_bytes, R30); |
aoqi@0 | 254 | |
aoqi@0 | 255 | // save all registers (ints and floats) |
aoqi@0 | 256 | offset = register_save_offset; |
aoqi@0 | 257 | for (int i = 0; i < regstosave_num; i++) { |
aoqi@0 | 258 | int reg_num = RegisterSaver_LiveRegs[i].reg_num; |
aoqi@0 | 259 | int reg_type = RegisterSaver_LiveRegs[i].reg_type; |
aoqi@0 | 260 | |
aoqi@0 | 261 | switch (reg_type) { |
aoqi@0 | 262 | case RegisterSaver::int_reg: { |
aoqi@0 | 263 | if (reg_num != 30) { // We spilled R30 right at the beginning. |
aoqi@0 | 264 | __ std(as_Register(reg_num), offset, R1_SP); |
aoqi@0 | 265 | } |
aoqi@0 | 266 | break; |
aoqi@0 | 267 | } |
aoqi@0 | 268 | case RegisterSaver::float_reg: { |
aoqi@0 | 269 | __ stfd(as_FloatRegister(reg_num), offset, R1_SP); |
aoqi@0 | 270 | break; |
aoqi@0 | 271 | } |
aoqi@0 | 272 | case RegisterSaver::special_reg: { |
aoqi@0 | 273 | if (reg_num == SR_CTR_SpecialRegisterEnumValue) { |
aoqi@0 | 274 | __ mfctr(R30); |
aoqi@0 | 275 | __ std(R30, offset, R1_SP); |
aoqi@0 | 276 | } else { |
aoqi@0 | 277 | Unimplemented(); |
aoqi@0 | 278 | } |
aoqi@0 | 279 | break; |
aoqi@0 | 280 | } |
aoqi@0 | 281 | default: |
aoqi@0 | 282 | ShouldNotReachHere(); |
aoqi@0 | 283 | } |
aoqi@0 | 284 | |
aoqi@0 | 285 | if (generate_oop_map) { |
aoqi@0 | 286 | map->set_callee_saved(VMRegImpl::stack2reg(offset>>2), |
aoqi@0 | 287 | RegisterSaver_LiveRegs[i].vmreg); |
aoqi@0 | 288 | map->set_callee_saved(VMRegImpl::stack2reg((offset + half_reg_size)>>2), |
aoqi@0 | 289 | RegisterSaver_LiveRegs[i].vmreg->next()); |
aoqi@0 | 290 | } |
aoqi@0 | 291 | offset += reg_size; |
aoqi@0 | 292 | } |
aoqi@0 | 293 | |
aoqi@0 | 294 | BLOCK_COMMENT("} push_frame_reg_args_and_save_live_registers"); |
aoqi@0 | 295 | |
aoqi@0 | 296 | // And we're done. |
aoqi@0 | 297 | return map; |
aoqi@0 | 298 | } |
aoqi@0 | 299 | |
aoqi@0 | 300 | |
aoqi@0 | 301 | // Pop the current frame and restore all the registers that we |
aoqi@0 | 302 | // saved. |
aoqi@0 | 303 | void RegisterSaver::restore_live_registers_and_pop_frame(MacroAssembler* masm, |
aoqi@0 | 304 | int frame_size_in_bytes, |
aoqi@0 | 305 | bool restore_ctr) { |
aoqi@0 | 306 | int i; |
aoqi@0 | 307 | int offset; |
aoqi@0 | 308 | const int regstosave_num = sizeof(RegisterSaver_LiveRegs) / |
aoqi@0 | 309 | sizeof(RegisterSaver::LiveRegType); |
aoqi@0 | 310 | const int register_save_size = regstosave_num * reg_size; |
aoqi@0 | 311 | const int register_save_offset = frame_size_in_bytes - register_save_size; |
aoqi@0 | 312 | |
aoqi@0 | 313 | BLOCK_COMMENT("restore_live_registers_and_pop_frame {"); |
aoqi@0 | 314 | |
aoqi@0 | 315 | // restore all registers (ints and floats) |
aoqi@0 | 316 | offset = register_save_offset; |
aoqi@0 | 317 | for (int i = 0; i < regstosave_num; i++) { |
aoqi@0 | 318 | int reg_num = RegisterSaver_LiveRegs[i].reg_num; |
aoqi@0 | 319 | int reg_type = RegisterSaver_LiveRegs[i].reg_type; |
aoqi@0 | 320 | |
aoqi@0 | 321 | switch (reg_type) { |
aoqi@0 | 322 | case RegisterSaver::int_reg: { |
aoqi@0 | 323 | if (reg_num != 30) // R30 restored at the end, it's the tmp reg! |
aoqi@0 | 324 | __ ld(as_Register(reg_num), offset, R1_SP); |
aoqi@0 | 325 | break; |
aoqi@0 | 326 | } |
aoqi@0 | 327 | case RegisterSaver::float_reg: { |
aoqi@0 | 328 | __ lfd(as_FloatRegister(reg_num), offset, R1_SP); |
aoqi@0 | 329 | break; |
aoqi@0 | 330 | } |
aoqi@0 | 331 | case RegisterSaver::special_reg: { |
aoqi@0 | 332 | if (reg_num == SR_CTR_SpecialRegisterEnumValue) { |
aoqi@0 | 333 | if (restore_ctr) { // Nothing to do here if ctr already contains the next address. |
aoqi@0 | 334 | __ ld(R30, offset, R1_SP); |
aoqi@0 | 335 | __ mtctr(R30); |
aoqi@0 | 336 | } |
aoqi@0 | 337 | } else { |
aoqi@0 | 338 | Unimplemented(); |
aoqi@0 | 339 | } |
aoqi@0 | 340 | break; |
aoqi@0 | 341 | } |
aoqi@0 | 342 | default: |
aoqi@0 | 343 | ShouldNotReachHere(); |
aoqi@0 | 344 | } |
aoqi@0 | 345 | offset += reg_size; |
aoqi@0 | 346 | } |
aoqi@0 | 347 | |
aoqi@0 | 348 | // pop the frame |
aoqi@0 | 349 | __ pop_frame(); |
aoqi@0 | 350 | |
aoqi@0 | 351 | // restore the flags |
aoqi@0 | 352 | __ restore_LR_CR(R30); |
aoqi@0 | 353 | |
aoqi@0 | 354 | // restore scratch register's value |
aoqi@0 | 355 | __ ld(R30, -reg_size, R1_SP); |
aoqi@0 | 356 | |
aoqi@0 | 357 | BLOCK_COMMENT("} restore_live_registers_and_pop_frame"); |
aoqi@0 | 358 | } |
aoqi@0 | 359 | |
aoqi@0 | 360 | void RegisterSaver::push_frame_and_save_argument_registers(MacroAssembler* masm, Register r_temp, |
aoqi@0 | 361 | int frame_size,int total_args, const VMRegPair *regs, |
aoqi@0 | 362 | const VMRegPair *regs2) { |
aoqi@0 | 363 | __ push_frame(frame_size, r_temp); |
aoqi@0 | 364 | int st_off = frame_size - wordSize; |
aoqi@0 | 365 | for (int i = 0; i < total_args; i++) { |
aoqi@0 | 366 | VMReg r_1 = regs[i].first(); |
aoqi@0 | 367 | VMReg r_2 = regs[i].second(); |
aoqi@0 | 368 | if (!r_1->is_valid()) { |
aoqi@0 | 369 | assert(!r_2->is_valid(), ""); |
aoqi@0 | 370 | continue; |
aoqi@0 | 371 | } |
aoqi@0 | 372 | if (r_1->is_Register()) { |
aoqi@0 | 373 | Register r = r_1->as_Register(); |
aoqi@0 | 374 | __ std(r, st_off, R1_SP); |
aoqi@0 | 375 | st_off -= wordSize; |
aoqi@0 | 376 | } else if (r_1->is_FloatRegister()) { |
aoqi@0 | 377 | FloatRegister f = r_1->as_FloatRegister(); |
aoqi@0 | 378 | __ stfd(f, st_off, R1_SP); |
aoqi@0 | 379 | st_off -= wordSize; |
aoqi@0 | 380 | } |
aoqi@0 | 381 | } |
aoqi@0 | 382 | if (regs2 != NULL) { |
aoqi@0 | 383 | for (int i = 0; i < total_args; i++) { |
aoqi@0 | 384 | VMReg r_1 = regs2[i].first(); |
aoqi@0 | 385 | VMReg r_2 = regs2[i].second(); |
aoqi@0 | 386 | if (!r_1->is_valid()) { |
aoqi@0 | 387 | assert(!r_2->is_valid(), ""); |
aoqi@0 | 388 | continue; |
aoqi@0 | 389 | } |
aoqi@0 | 390 | if (r_1->is_Register()) { |
aoqi@0 | 391 | Register r = r_1->as_Register(); |
aoqi@0 | 392 | __ std(r, st_off, R1_SP); |
aoqi@0 | 393 | st_off -= wordSize; |
aoqi@0 | 394 | } else if (r_1->is_FloatRegister()) { |
aoqi@0 | 395 | FloatRegister f = r_1->as_FloatRegister(); |
aoqi@0 | 396 | __ stfd(f, st_off, R1_SP); |
aoqi@0 | 397 | st_off -= wordSize; |
aoqi@0 | 398 | } |
aoqi@0 | 399 | } |
aoqi@0 | 400 | } |
aoqi@0 | 401 | } |
aoqi@0 | 402 | |
aoqi@0 | 403 | void RegisterSaver::restore_argument_registers_and_pop_frame(MacroAssembler*masm, int frame_size, |
aoqi@0 | 404 | int total_args, const VMRegPair *regs, |
aoqi@0 | 405 | const VMRegPair *regs2) { |
aoqi@0 | 406 | int st_off = frame_size - wordSize; |
aoqi@0 | 407 | for (int i = 0; i < total_args; i++) { |
aoqi@0 | 408 | VMReg r_1 = regs[i].first(); |
aoqi@0 | 409 | VMReg r_2 = regs[i].second(); |
aoqi@0 | 410 | if (r_1->is_Register()) { |
aoqi@0 | 411 | Register r = r_1->as_Register(); |
aoqi@0 | 412 | __ ld(r, st_off, R1_SP); |
aoqi@0 | 413 | st_off -= wordSize; |
aoqi@0 | 414 | } else if (r_1->is_FloatRegister()) { |
aoqi@0 | 415 | FloatRegister f = r_1->as_FloatRegister(); |
aoqi@0 | 416 | __ lfd(f, st_off, R1_SP); |
aoqi@0 | 417 | st_off -= wordSize; |
aoqi@0 | 418 | } |
aoqi@0 | 419 | } |
aoqi@0 | 420 | if (regs2 != NULL) |
aoqi@0 | 421 | for (int i = 0; i < total_args; i++) { |
aoqi@0 | 422 | VMReg r_1 = regs2[i].first(); |
aoqi@0 | 423 | VMReg r_2 = regs2[i].second(); |
aoqi@0 | 424 | if (r_1->is_Register()) { |
aoqi@0 | 425 | Register r = r_1->as_Register(); |
aoqi@0 | 426 | __ ld(r, st_off, R1_SP); |
aoqi@0 | 427 | st_off -= wordSize; |
aoqi@0 | 428 | } else if (r_1->is_FloatRegister()) { |
aoqi@0 | 429 | FloatRegister f = r_1->as_FloatRegister(); |
aoqi@0 | 430 | __ lfd(f, st_off, R1_SP); |
aoqi@0 | 431 | st_off -= wordSize; |
aoqi@0 | 432 | } |
aoqi@0 | 433 | } |
aoqi@0 | 434 | __ pop_frame(); |
aoqi@0 | 435 | } |
aoqi@0 | 436 | |
aoqi@0 | 437 | // Restore the registers that might be holding a result. |
aoqi@0 | 438 | void RegisterSaver::restore_result_registers(MacroAssembler* masm, int frame_size_in_bytes) { |
aoqi@0 | 439 | int i; |
aoqi@0 | 440 | int offset; |
aoqi@0 | 441 | const int regstosave_num = sizeof(RegisterSaver_LiveRegs) / |
aoqi@0 | 442 | sizeof(RegisterSaver::LiveRegType); |
aoqi@0 | 443 | const int register_save_size = regstosave_num * reg_size; |
aoqi@0 | 444 | const int register_save_offset = frame_size_in_bytes - register_save_size; |
aoqi@0 | 445 | |
aoqi@0 | 446 | // restore all result registers (ints and floats) |
aoqi@0 | 447 | offset = register_save_offset; |
aoqi@0 | 448 | for (int i = 0; i < regstosave_num; i++) { |
aoqi@0 | 449 | int reg_num = RegisterSaver_LiveRegs[i].reg_num; |
aoqi@0 | 450 | int reg_type = RegisterSaver_LiveRegs[i].reg_type; |
aoqi@0 | 451 | switch (reg_type) { |
aoqi@0 | 452 | case RegisterSaver::int_reg: { |
aoqi@0 | 453 | if (as_Register(reg_num)==R3_RET) // int result_reg |
aoqi@0 | 454 | __ ld(as_Register(reg_num), offset, R1_SP); |
aoqi@0 | 455 | break; |
aoqi@0 | 456 | } |
aoqi@0 | 457 | case RegisterSaver::float_reg: { |
aoqi@0 | 458 | if (as_FloatRegister(reg_num)==F1_RET) // float result_reg |
aoqi@0 | 459 | __ lfd(as_FloatRegister(reg_num), offset, R1_SP); |
aoqi@0 | 460 | break; |
aoqi@0 | 461 | } |
aoqi@0 | 462 | case RegisterSaver::special_reg: { |
aoqi@0 | 463 | // Special registers don't hold a result. |
aoqi@0 | 464 | break; |
aoqi@0 | 465 | } |
aoqi@0 | 466 | default: |
aoqi@0 | 467 | ShouldNotReachHere(); |
aoqi@0 | 468 | } |
aoqi@0 | 469 | offset += reg_size; |
aoqi@0 | 470 | } |
aoqi@0 | 471 | } |
aoqi@0 | 472 | |
aoqi@0 | 473 | // Is vector's size (in bytes) bigger than a size saved by default? |
aoqi@0 | 474 | bool SharedRuntime::is_wide_vector(int size) { |
aoqi@0 | 475 | ResourceMark rm; |
aoqi@0 | 476 | // Note, MaxVectorSize == 8 on PPC64. |
aoqi@0 | 477 | assert(size <= 8, err_msg_res("%d bytes vectors are not supported", size)); |
aoqi@0 | 478 | return size > 8; |
aoqi@0 | 479 | } |
aoqi@0 | 480 | #ifdef COMPILER2 |
aoqi@0 | 481 | static int reg2slot(VMReg r) { |
aoqi@0 | 482 | return r->reg2stack() + SharedRuntime::out_preserve_stack_slots(); |
aoqi@0 | 483 | } |
aoqi@0 | 484 | |
aoqi@0 | 485 | static int reg2offset(VMReg r) { |
aoqi@0 | 486 | return (r->reg2stack() + SharedRuntime::out_preserve_stack_slots()) * VMRegImpl::stack_slot_size; |
aoqi@0 | 487 | } |
aoqi@0 | 488 | #endif |
aoqi@0 | 489 | |
aoqi@0 | 490 | // --------------------------------------------------------------------------- |
aoqi@0 | 491 | // Read the array of BasicTypes from a signature, and compute where the |
aoqi@0 | 492 | // arguments should go. Values in the VMRegPair regs array refer to 4-byte |
aoqi@0 | 493 | // quantities. Values less than VMRegImpl::stack0 are registers, those above |
aoqi@0 | 494 | // refer to 4-byte stack slots. All stack slots are based off of the stack pointer |
aoqi@0 | 495 | // as framesizes are fixed. |
aoqi@0 | 496 | // VMRegImpl::stack0 refers to the first slot 0(sp). |
aoqi@0 | 497 | // and VMRegImpl::stack0+1 refers to the memory word 4-bytes higher. Register |
aoqi@0 | 498 | // up to RegisterImpl::number_of_registers) are the 64-bit |
aoqi@0 | 499 | // integer registers. |
aoqi@0 | 500 | |
aoqi@0 | 501 | // Note: the INPUTS in sig_bt are in units of Java argument words, which are |
aoqi@0 | 502 | // either 32-bit or 64-bit depending on the build. The OUTPUTS are in 32-bit |
aoqi@0 | 503 | // units regardless of build. Of course for i486 there is no 64 bit build |
aoqi@0 | 504 | |
aoqi@0 | 505 | // The Java calling convention is a "shifted" version of the C ABI. |
aoqi@0 | 506 | // By skipping the first C ABI register we can call non-static jni methods |
aoqi@0 | 507 | // with small numbers of arguments without having to shuffle the arguments |
aoqi@0 | 508 | // at all. Since we control the java ABI we ought to at least get some |
aoqi@0 | 509 | // advantage out of it. |
aoqi@0 | 510 | |
aoqi@0 | 511 | const VMReg java_iarg_reg[8] = { |
aoqi@0 | 512 | R3->as_VMReg(), |
aoqi@0 | 513 | R4->as_VMReg(), |
aoqi@0 | 514 | R5->as_VMReg(), |
aoqi@0 | 515 | R6->as_VMReg(), |
aoqi@0 | 516 | R7->as_VMReg(), |
aoqi@0 | 517 | R8->as_VMReg(), |
aoqi@0 | 518 | R9->as_VMReg(), |
aoqi@0 | 519 | R10->as_VMReg() |
aoqi@0 | 520 | }; |
aoqi@0 | 521 | |
aoqi@0 | 522 | const VMReg java_farg_reg[13] = { |
aoqi@0 | 523 | F1->as_VMReg(), |
aoqi@0 | 524 | F2->as_VMReg(), |
aoqi@0 | 525 | F3->as_VMReg(), |
aoqi@0 | 526 | F4->as_VMReg(), |
aoqi@0 | 527 | F5->as_VMReg(), |
aoqi@0 | 528 | F6->as_VMReg(), |
aoqi@0 | 529 | F7->as_VMReg(), |
aoqi@0 | 530 | F8->as_VMReg(), |
aoqi@0 | 531 | F9->as_VMReg(), |
aoqi@0 | 532 | F10->as_VMReg(), |
aoqi@0 | 533 | F11->as_VMReg(), |
aoqi@0 | 534 | F12->as_VMReg(), |
aoqi@0 | 535 | F13->as_VMReg() |
aoqi@0 | 536 | }; |
aoqi@0 | 537 | |
aoqi@0 | 538 | const int num_java_iarg_registers = sizeof(java_iarg_reg) / sizeof(java_iarg_reg[0]); |
aoqi@0 | 539 | const int num_java_farg_registers = sizeof(java_farg_reg) / sizeof(java_farg_reg[0]); |
aoqi@0 | 540 | |
aoqi@0 | 541 | int SharedRuntime::java_calling_convention(const BasicType *sig_bt, |
aoqi@0 | 542 | VMRegPair *regs, |
aoqi@0 | 543 | int total_args_passed, |
aoqi@0 | 544 | int is_outgoing) { |
aoqi@0 | 545 | // C2c calling conventions for compiled-compiled calls. |
aoqi@0 | 546 | // Put 8 ints/longs into registers _AND_ 13 float/doubles into |
aoqi@0 | 547 | // registers _AND_ put the rest on the stack. |
aoqi@0 | 548 | |
aoqi@0 | 549 | const int inc_stk_for_intfloat = 1; // 1 slots for ints and floats |
aoqi@0 | 550 | const int inc_stk_for_longdouble = 2; // 2 slots for longs and doubles |
aoqi@0 | 551 | |
aoqi@0 | 552 | int i; |
aoqi@0 | 553 | VMReg reg; |
aoqi@0 | 554 | int stk = 0; |
aoqi@0 | 555 | int ireg = 0; |
aoqi@0 | 556 | int freg = 0; |
aoqi@0 | 557 | |
aoqi@0 | 558 | // We put the first 8 arguments into registers and the rest on the |
aoqi@0 | 559 | // stack, float arguments are already in their argument registers |
aoqi@0 | 560 | // due to c2c calling conventions (see calling_convention). |
aoqi@0 | 561 | for (int i = 0; i < total_args_passed; ++i) { |
aoqi@0 | 562 | switch(sig_bt[i]) { |
aoqi@0 | 563 | case T_BOOLEAN: |
aoqi@0 | 564 | case T_CHAR: |
aoqi@0 | 565 | case T_BYTE: |
aoqi@0 | 566 | case T_SHORT: |
aoqi@0 | 567 | case T_INT: |
aoqi@0 | 568 | if (ireg < num_java_iarg_registers) { |
aoqi@0 | 569 | // Put int/ptr in register |
aoqi@0 | 570 | reg = java_iarg_reg[ireg]; |
aoqi@0 | 571 | ++ireg; |
aoqi@0 | 572 | } else { |
aoqi@0 | 573 | // Put int/ptr on stack. |
aoqi@0 | 574 | reg = VMRegImpl::stack2reg(stk); |
aoqi@0 | 575 | stk += inc_stk_for_intfloat; |
aoqi@0 | 576 | } |
aoqi@0 | 577 | regs[i].set1(reg); |
aoqi@0 | 578 | break; |
aoqi@0 | 579 | case T_LONG: |
aoqi@0 | 580 | assert(sig_bt[i+1] == T_VOID, "expecting half"); |
aoqi@0 | 581 | if (ireg < num_java_iarg_registers) { |
aoqi@0 | 582 | // Put long in register. |
aoqi@0 | 583 | reg = java_iarg_reg[ireg]; |
aoqi@0 | 584 | ++ireg; |
aoqi@0 | 585 | } else { |
aoqi@0 | 586 | // Put long on stack. They must be aligned to 2 slots. |
aoqi@0 | 587 | if (stk & 0x1) ++stk; |
aoqi@0 | 588 | reg = VMRegImpl::stack2reg(stk); |
aoqi@0 | 589 | stk += inc_stk_for_longdouble; |
aoqi@0 | 590 | } |
aoqi@0 | 591 | regs[i].set2(reg); |
aoqi@0 | 592 | break; |
aoqi@0 | 593 | case T_OBJECT: |
aoqi@0 | 594 | case T_ARRAY: |
aoqi@0 | 595 | case T_ADDRESS: |
aoqi@0 | 596 | if (ireg < num_java_iarg_registers) { |
aoqi@0 | 597 | // Put ptr in register. |
aoqi@0 | 598 | reg = java_iarg_reg[ireg]; |
aoqi@0 | 599 | ++ireg; |
aoqi@0 | 600 | } else { |
aoqi@0 | 601 | // Put ptr on stack. Objects must be aligned to 2 slots too, |
aoqi@0 | 602 | // because "64-bit pointers record oop-ishness on 2 aligned |
aoqi@0 | 603 | // adjacent registers." (see OopFlow::build_oop_map). |
aoqi@0 | 604 | if (stk & 0x1) ++stk; |
aoqi@0 | 605 | reg = VMRegImpl::stack2reg(stk); |
aoqi@0 | 606 | stk += inc_stk_for_longdouble; |
aoqi@0 | 607 | } |
aoqi@0 | 608 | regs[i].set2(reg); |
aoqi@0 | 609 | break; |
aoqi@0 | 610 | case T_FLOAT: |
aoqi@0 | 611 | if (freg < num_java_farg_registers) { |
aoqi@0 | 612 | // Put float in register. |
aoqi@0 | 613 | reg = java_farg_reg[freg]; |
aoqi@0 | 614 | ++freg; |
aoqi@0 | 615 | } else { |
aoqi@0 | 616 | // Put float on stack. |
aoqi@0 | 617 | reg = VMRegImpl::stack2reg(stk); |
aoqi@0 | 618 | stk += inc_stk_for_intfloat; |
aoqi@0 | 619 | } |
aoqi@0 | 620 | regs[i].set1(reg); |
aoqi@0 | 621 | break; |
aoqi@0 | 622 | case T_DOUBLE: |
aoqi@0 | 623 | assert(sig_bt[i+1] == T_VOID, "expecting half"); |
aoqi@0 | 624 | if (freg < num_java_farg_registers) { |
aoqi@0 | 625 | // Put double in register. |
aoqi@0 | 626 | reg = java_farg_reg[freg]; |
aoqi@0 | 627 | ++freg; |
aoqi@0 | 628 | } else { |
aoqi@0 | 629 | // Put double on stack. They must be aligned to 2 slots. |
aoqi@0 | 630 | if (stk & 0x1) ++stk; |
aoqi@0 | 631 | reg = VMRegImpl::stack2reg(stk); |
aoqi@0 | 632 | stk += inc_stk_for_longdouble; |
aoqi@0 | 633 | } |
aoqi@0 | 634 | regs[i].set2(reg); |
aoqi@0 | 635 | break; |
aoqi@0 | 636 | case T_VOID: |
aoqi@0 | 637 | // Do not count halves. |
aoqi@0 | 638 | regs[i].set_bad(); |
aoqi@0 | 639 | break; |
aoqi@0 | 640 | default: |
aoqi@0 | 641 | ShouldNotReachHere(); |
aoqi@0 | 642 | } |
aoqi@0 | 643 | } |
aoqi@0 | 644 | return round_to(stk, 2); |
aoqi@0 | 645 | } |
aoqi@0 | 646 | |
aoqi@0 | 647 | #ifdef COMPILER2 |
aoqi@0 | 648 | // Calling convention for calling C code. |
aoqi@0 | 649 | int SharedRuntime::c_calling_convention(const BasicType *sig_bt, |
aoqi@0 | 650 | VMRegPair *regs, |
aoqi@0 | 651 | VMRegPair *regs2, |
aoqi@0 | 652 | int total_args_passed) { |
aoqi@0 | 653 | // Calling conventions for C runtime calls and calls to JNI native methods. |
aoqi@0 | 654 | // |
aoqi@0 | 655 | // PPC64 convention: Hoist the first 8 int/ptr/long's in the first 8 |
aoqi@0 | 656 | // int regs, leaving int regs undefined if the arg is flt/dbl. Hoist |
aoqi@0 | 657 | // the first 13 flt/dbl's in the first 13 fp regs but additionally |
aoqi@0 | 658 | // copy flt/dbl to the stack if they are beyond the 8th argument. |
aoqi@0 | 659 | |
aoqi@0 | 660 | const VMReg iarg_reg[8] = { |
aoqi@0 | 661 | R3->as_VMReg(), |
aoqi@0 | 662 | R4->as_VMReg(), |
aoqi@0 | 663 | R5->as_VMReg(), |
aoqi@0 | 664 | R6->as_VMReg(), |
aoqi@0 | 665 | R7->as_VMReg(), |
aoqi@0 | 666 | R8->as_VMReg(), |
aoqi@0 | 667 | R9->as_VMReg(), |
aoqi@0 | 668 | R10->as_VMReg() |
aoqi@0 | 669 | }; |
aoqi@0 | 670 | |
aoqi@0 | 671 | const VMReg farg_reg[13] = { |
aoqi@0 | 672 | F1->as_VMReg(), |
aoqi@0 | 673 | F2->as_VMReg(), |
aoqi@0 | 674 | F3->as_VMReg(), |
aoqi@0 | 675 | F4->as_VMReg(), |
aoqi@0 | 676 | F5->as_VMReg(), |
aoqi@0 | 677 | F6->as_VMReg(), |
aoqi@0 | 678 | F7->as_VMReg(), |
aoqi@0 | 679 | F8->as_VMReg(), |
aoqi@0 | 680 | F9->as_VMReg(), |
aoqi@0 | 681 | F10->as_VMReg(), |
aoqi@0 | 682 | F11->as_VMReg(), |
aoqi@0 | 683 | F12->as_VMReg(), |
aoqi@0 | 684 | F13->as_VMReg() |
aoqi@0 | 685 | }; |
aoqi@0 | 686 | |
aoqi@0 | 687 | // Check calling conventions consistency. |
aoqi@0 | 688 | assert(sizeof(iarg_reg) / sizeof(iarg_reg[0]) == Argument::n_int_register_parameters_c && |
aoqi@0 | 689 | sizeof(farg_reg) / sizeof(farg_reg[0]) == Argument::n_float_register_parameters_c, |
aoqi@0 | 690 | "consistency"); |
aoqi@0 | 691 | |
aoqi@0 | 692 | // `Stk' counts stack slots. Due to alignment, 32 bit values occupy |
aoqi@0 | 693 | // 2 such slots, like 64 bit values do. |
aoqi@0 | 694 | const int inc_stk_for_intfloat = 2; // 2 slots for ints and floats |
aoqi@0 | 695 | const int inc_stk_for_longdouble = 2; // 2 slots for longs and doubles |
aoqi@0 | 696 | |
aoqi@0 | 697 | int i; |
aoqi@0 | 698 | VMReg reg; |
aoqi@0 | 699 | // Leave room for C-compatible ABI_REG_ARGS. |
aoqi@0 | 700 | int stk = (frame::abi_reg_args_size - frame::jit_out_preserve_size) / VMRegImpl::stack_slot_size; |
aoqi@0 | 701 | int arg = 0; |
aoqi@0 | 702 | int freg = 0; |
aoqi@0 | 703 | |
aoqi@0 | 704 | // Avoid passing C arguments in the wrong stack slots. |
aoqi@0 | 705 | #if defined(ABI_ELFv2) |
aoqi@0 | 706 | assert((SharedRuntime::out_preserve_stack_slots() + stk) * VMRegImpl::stack_slot_size == 96, |
aoqi@0 | 707 | "passing C arguments in wrong stack slots"); |
aoqi@0 | 708 | #else |
aoqi@0 | 709 | assert((SharedRuntime::out_preserve_stack_slots() + stk) * VMRegImpl::stack_slot_size == 112, |
aoqi@0 | 710 | "passing C arguments in wrong stack slots"); |
aoqi@0 | 711 | #endif |
aoqi@0 | 712 | // We fill-out regs AND regs2 if an argument must be passed in a |
aoqi@0 | 713 | // register AND in a stack slot. If regs2 is NULL in such a |
aoqi@0 | 714 | // situation, we bail-out with a fatal error. |
aoqi@0 | 715 | for (int i = 0; i < total_args_passed; ++i, ++arg) { |
aoqi@0 | 716 | // Initialize regs2 to BAD. |
aoqi@0 | 717 | if (regs2 != NULL) regs2[i].set_bad(); |
aoqi@0 | 718 | |
aoqi@0 | 719 | switch(sig_bt[i]) { |
aoqi@0 | 720 | |
aoqi@0 | 721 | // |
aoqi@0 | 722 | // If arguments 0-7 are integers, they are passed in integer registers. |
aoqi@0 | 723 | // Argument i is placed in iarg_reg[i]. |
aoqi@0 | 724 | // |
aoqi@0 | 725 | case T_BOOLEAN: |
aoqi@0 | 726 | case T_CHAR: |
aoqi@0 | 727 | case T_BYTE: |
aoqi@0 | 728 | case T_SHORT: |
aoqi@0 | 729 | case T_INT: |
aoqi@0 | 730 | // We must cast ints to longs and use full 64 bit stack slots |
aoqi@0 | 731 | // here. We do the cast in GraphKit::gen_stub() and just guard |
aoqi@0 | 732 | // here against loosing that change. |
aoqi@0 | 733 | assert(CCallingConventionRequiresIntsAsLongs, |
aoqi@0 | 734 | "argument of type int should be promoted to type long"); |
aoqi@0 | 735 | guarantee(i > 0 && sig_bt[i-1] == T_LONG, |
aoqi@0 | 736 | "argument of type (bt) should have been promoted to type (T_LONG,bt) for bt in " |
aoqi@0 | 737 | "{T_BOOLEAN, T_CHAR, T_BYTE, T_SHORT, T_INT}"); |
aoqi@0 | 738 | // Do not count halves. |
aoqi@0 | 739 | regs[i].set_bad(); |
aoqi@0 | 740 | --arg; |
aoqi@0 | 741 | break; |
aoqi@0 | 742 | case T_LONG: |
aoqi@0 | 743 | guarantee(sig_bt[i+1] == T_VOID || |
aoqi@0 | 744 | sig_bt[i+1] == T_BOOLEAN || sig_bt[i+1] == T_CHAR || |
aoqi@0 | 745 | sig_bt[i+1] == T_BYTE || sig_bt[i+1] == T_SHORT || |
aoqi@0 | 746 | sig_bt[i+1] == T_INT, |
aoqi@0 | 747 | "expecting type (T_LONG,half) or type (T_LONG,bt) with bt in {T_BOOLEAN, T_CHAR, T_BYTE, T_SHORT, T_INT}"); |
aoqi@0 | 748 | case T_OBJECT: |
aoqi@0 | 749 | case T_ARRAY: |
aoqi@0 | 750 | case T_ADDRESS: |
aoqi@0 | 751 | case T_METADATA: |
aoqi@0 | 752 | // Oops are already boxed if required (JNI). |
aoqi@0 | 753 | if (arg < Argument::n_int_register_parameters_c) { |
aoqi@0 | 754 | reg = iarg_reg[arg]; |
aoqi@0 | 755 | } else { |
aoqi@0 | 756 | reg = VMRegImpl::stack2reg(stk); |
aoqi@0 | 757 | stk += inc_stk_for_longdouble; |
aoqi@0 | 758 | } |
aoqi@0 | 759 | regs[i].set2(reg); |
aoqi@0 | 760 | break; |
aoqi@0 | 761 | |
aoqi@0 | 762 | // |
aoqi@0 | 763 | // Floats are treated differently from int regs: The first 13 float arguments |
aoqi@0 | 764 | // are passed in registers (not the float args among the first 13 args). |
aoqi@0 | 765 | // Thus argument i is NOT passed in farg_reg[i] if it is float. It is passed |
aoqi@0 | 766 | // in farg_reg[j] if argument i is the j-th float argument of this call. |
aoqi@0 | 767 | // |
aoqi@0 | 768 | case T_FLOAT: |
aoqi@0 | 769 | if (freg < Argument::n_float_register_parameters_c) { |
aoqi@0 | 770 | // Put float in register ... |
aoqi@0 | 771 | reg = farg_reg[freg]; |
aoqi@0 | 772 | ++freg; |
aoqi@0 | 773 | |
aoqi@0 | 774 | // Argument i for i > 8 is placed on the stack even if it's |
aoqi@0 | 775 | // placed in a register (if it's a float arg). Aix disassembly |
aoqi@0 | 776 | // shows that xlC places these float args on the stack AND in |
aoqi@0 | 777 | // a register. This is not documented, but we follow this |
aoqi@0 | 778 | // convention, too. |
aoqi@0 | 779 | if (arg >= Argument::n_regs_not_on_stack_c) { |
aoqi@0 | 780 | // ... and on the stack. |
aoqi@0 | 781 | guarantee(regs2 != NULL, "must pass float in register and stack slot"); |
aoqi@0 | 782 | VMReg reg2 = VMRegImpl::stack2reg(stk LINUX_ONLY(+1)); |
aoqi@0 | 783 | regs2[i].set1(reg2); |
aoqi@0 | 784 | stk += inc_stk_for_intfloat; |
aoqi@0 | 785 | } |
aoqi@0 | 786 | |
aoqi@0 | 787 | } else { |
aoqi@0 | 788 | // Put float on stack. |
aoqi@0 | 789 | reg = VMRegImpl::stack2reg(stk LINUX_ONLY(+1)); |
aoqi@0 | 790 | stk += inc_stk_for_intfloat; |
aoqi@0 | 791 | } |
aoqi@0 | 792 | regs[i].set1(reg); |
aoqi@0 | 793 | break; |
aoqi@0 | 794 | case T_DOUBLE: |
aoqi@0 | 795 | assert(sig_bt[i+1] == T_VOID, "expecting half"); |
aoqi@0 | 796 | if (freg < Argument::n_float_register_parameters_c) { |
aoqi@0 | 797 | // Put double in register ... |
aoqi@0 | 798 | reg = farg_reg[freg]; |
aoqi@0 | 799 | ++freg; |
aoqi@0 | 800 | |
aoqi@0 | 801 | // Argument i for i > 8 is placed on the stack even if it's |
aoqi@0 | 802 | // placed in a register (if it's a double arg). Aix disassembly |
aoqi@0 | 803 | // shows that xlC places these float args on the stack AND in |
aoqi@0 | 804 | // a register. This is not documented, but we follow this |
aoqi@0 | 805 | // convention, too. |
aoqi@0 | 806 | if (arg >= Argument::n_regs_not_on_stack_c) { |
aoqi@0 | 807 | // ... and on the stack. |
aoqi@0 | 808 | guarantee(regs2 != NULL, "must pass float in register and stack slot"); |
aoqi@0 | 809 | VMReg reg2 = VMRegImpl::stack2reg(stk); |
aoqi@0 | 810 | regs2[i].set2(reg2); |
aoqi@0 | 811 | stk += inc_stk_for_longdouble; |
aoqi@0 | 812 | } |
aoqi@0 | 813 | } else { |
aoqi@0 | 814 | // Put double on stack. |
aoqi@0 | 815 | reg = VMRegImpl::stack2reg(stk); |
aoqi@0 | 816 | stk += inc_stk_for_longdouble; |
aoqi@0 | 817 | } |
aoqi@0 | 818 | regs[i].set2(reg); |
aoqi@0 | 819 | break; |
aoqi@0 | 820 | |
aoqi@0 | 821 | case T_VOID: |
aoqi@0 | 822 | // Do not count halves. |
aoqi@0 | 823 | regs[i].set_bad(); |
aoqi@0 | 824 | --arg; |
aoqi@0 | 825 | break; |
aoqi@0 | 826 | default: |
aoqi@0 | 827 | ShouldNotReachHere(); |
aoqi@0 | 828 | } |
aoqi@0 | 829 | } |
aoqi@0 | 830 | |
aoqi@0 | 831 | return round_to(stk, 2); |
aoqi@0 | 832 | } |
aoqi@0 | 833 | #endif // COMPILER2 |
aoqi@0 | 834 | |
aoqi@0 | 835 | static address gen_c2i_adapter(MacroAssembler *masm, |
aoqi@0 | 836 | int total_args_passed, |
aoqi@0 | 837 | int comp_args_on_stack, |
aoqi@0 | 838 | const BasicType *sig_bt, |
aoqi@0 | 839 | const VMRegPair *regs, |
aoqi@0 | 840 | Label& call_interpreter, |
aoqi@0 | 841 | const Register& ientry) { |
aoqi@0 | 842 | |
aoqi@0 | 843 | address c2i_entrypoint; |
aoqi@0 | 844 | |
aoqi@0 | 845 | const Register sender_SP = R21_sender_SP; // == R21_tmp1 |
aoqi@0 | 846 | const Register code = R22_tmp2; |
aoqi@0 | 847 | //const Register ientry = R23_tmp3; |
aoqi@0 | 848 | const Register value_regs[] = { R24_tmp4, R25_tmp5, R26_tmp6 }; |
aoqi@0 | 849 | const int num_value_regs = sizeof(value_regs) / sizeof(Register); |
aoqi@0 | 850 | int value_regs_index = 0; |
aoqi@0 | 851 | |
aoqi@0 | 852 | const Register return_pc = R27_tmp7; |
aoqi@0 | 853 | const Register tmp = R28_tmp8; |
aoqi@0 | 854 | |
aoqi@0 | 855 | assert_different_registers(sender_SP, code, ientry, return_pc, tmp); |
aoqi@0 | 856 | |
aoqi@0 | 857 | // Adapter needs TOP_IJAVA_FRAME_ABI. |
aoqi@0 | 858 | const int adapter_size = frame::top_ijava_frame_abi_size + |
aoqi@0 | 859 | round_to(total_args_passed * wordSize, frame::alignment_in_bytes); |
aoqi@0 | 860 | |
aoqi@0 | 861 | // regular (verified) c2i entry point |
aoqi@0 | 862 | c2i_entrypoint = __ pc(); |
aoqi@0 | 863 | |
aoqi@0 | 864 | // Does compiled code exists? If yes, patch the caller's callsite. |
aoqi@0 | 865 | __ ld(code, method_(code)); |
aoqi@0 | 866 | __ cmpdi(CCR0, code, 0); |
aoqi@0 | 867 | __ ld(ientry, method_(interpreter_entry)); // preloaded |
aoqi@0 | 868 | __ beq(CCR0, call_interpreter); |
aoqi@0 | 869 | |
aoqi@0 | 870 | |
aoqi@0 | 871 | // Patch caller's callsite, method_(code) was not NULL which means that |
aoqi@0 | 872 | // compiled code exists. |
aoqi@0 | 873 | __ mflr(return_pc); |
aoqi@0 | 874 | __ std(return_pc, _abi(lr), R1_SP); |
aoqi@0 | 875 | RegisterSaver::push_frame_and_save_argument_registers(masm, tmp, adapter_size, total_args_passed, regs); |
aoqi@0 | 876 | |
aoqi@0 | 877 | __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::fixup_callers_callsite), R19_method, return_pc); |
aoqi@0 | 878 | |
aoqi@0 | 879 | RegisterSaver::restore_argument_registers_and_pop_frame(masm, adapter_size, total_args_passed, regs); |
aoqi@0 | 880 | __ ld(return_pc, _abi(lr), R1_SP); |
aoqi@0 | 881 | __ ld(ientry, method_(interpreter_entry)); // preloaded |
aoqi@0 | 882 | __ mtlr(return_pc); |
aoqi@0 | 883 | |
aoqi@0 | 884 | |
aoqi@0 | 885 | // Call the interpreter. |
aoqi@0 | 886 | __ BIND(call_interpreter); |
aoqi@0 | 887 | __ mtctr(ientry); |
aoqi@0 | 888 | |
aoqi@0 | 889 | // Get a copy of the current SP for loading caller's arguments. |
aoqi@0 | 890 | __ mr(sender_SP, R1_SP); |
aoqi@0 | 891 | |
aoqi@0 | 892 | // Add space for the adapter. |
aoqi@0 | 893 | __ resize_frame(-adapter_size, R12_scratch2); |
aoqi@0 | 894 | |
aoqi@0 | 895 | int st_off = adapter_size - wordSize; |
aoqi@0 | 896 | |
aoqi@0 | 897 | // Write the args into the outgoing interpreter space. |
aoqi@0 | 898 | for (int i = 0; i < total_args_passed; i++) { |
aoqi@0 | 899 | VMReg r_1 = regs[i].first(); |
aoqi@0 | 900 | VMReg r_2 = regs[i].second(); |
aoqi@0 | 901 | if (!r_1->is_valid()) { |
aoqi@0 | 902 | assert(!r_2->is_valid(), ""); |
aoqi@0 | 903 | continue; |
aoqi@0 | 904 | } |
aoqi@0 | 905 | if (r_1->is_stack()) { |
aoqi@0 | 906 | Register tmp_reg = value_regs[value_regs_index]; |
aoqi@0 | 907 | value_regs_index = (value_regs_index + 1) % num_value_regs; |
aoqi@0 | 908 | // The calling convention produces OptoRegs that ignore the out |
aoqi@0 | 909 | // preserve area (JIT's ABI). We must account for it here. |
aoqi@0 | 910 | int ld_off = (r_1->reg2stack() + SharedRuntime::out_preserve_stack_slots()) * VMRegImpl::stack_slot_size; |
aoqi@0 | 911 | if (!r_2->is_valid()) { |
aoqi@0 | 912 | __ lwz(tmp_reg, ld_off, sender_SP); |
aoqi@0 | 913 | } else { |
aoqi@0 | 914 | __ ld(tmp_reg, ld_off, sender_SP); |
aoqi@0 | 915 | } |
aoqi@0 | 916 | // Pretend stack targets were loaded into tmp_reg. |
aoqi@0 | 917 | r_1 = tmp_reg->as_VMReg(); |
aoqi@0 | 918 | } |
aoqi@0 | 919 | |
aoqi@0 | 920 | if (r_1->is_Register()) { |
aoqi@0 | 921 | Register r = r_1->as_Register(); |
aoqi@0 | 922 | if (!r_2->is_valid()) { |
aoqi@0 | 923 | __ stw(r, st_off, R1_SP); |
aoqi@0 | 924 | st_off-=wordSize; |
aoqi@0 | 925 | } else { |
aoqi@0 | 926 | // Longs are given 2 64-bit slots in the interpreter, but the |
aoqi@0 | 927 | // data is passed in only 1 slot. |
aoqi@0 | 928 | if (sig_bt[i] == T_LONG || sig_bt[i] == T_DOUBLE) { |
aoqi@0 | 929 | DEBUG_ONLY( __ li(tmp, 0); __ std(tmp, st_off, R1_SP); ) |
aoqi@0 | 930 | st_off-=wordSize; |
aoqi@0 | 931 | } |
aoqi@0 | 932 | __ std(r, st_off, R1_SP); |
aoqi@0 | 933 | st_off-=wordSize; |
aoqi@0 | 934 | } |
aoqi@0 | 935 | } else { |
aoqi@0 | 936 | assert(r_1->is_FloatRegister(), ""); |
aoqi@0 | 937 | FloatRegister f = r_1->as_FloatRegister(); |
aoqi@0 | 938 | if (!r_2->is_valid()) { |
aoqi@0 | 939 | __ stfs(f, st_off, R1_SP); |
aoqi@0 | 940 | st_off-=wordSize; |
aoqi@0 | 941 | } else { |
aoqi@0 | 942 | // In 64bit, doubles are given 2 64-bit slots in the interpreter, but the |
aoqi@0 | 943 | // data is passed in only 1 slot. |
aoqi@0 | 944 | // One of these should get known junk... |
aoqi@0 | 945 | DEBUG_ONLY( __ li(tmp, 0); __ std(tmp, st_off, R1_SP); ) |
aoqi@0 | 946 | st_off-=wordSize; |
aoqi@0 | 947 | __ stfd(f, st_off, R1_SP); |
aoqi@0 | 948 | st_off-=wordSize; |
aoqi@0 | 949 | } |
aoqi@0 | 950 | } |
aoqi@0 | 951 | } |
aoqi@0 | 952 | |
aoqi@0 | 953 | // Jump to the interpreter just as if interpreter was doing it. |
aoqi@0 | 954 | |
aoqi@0 | 955 | #ifdef CC_INTERP |
aoqi@0 | 956 | const Register tos = R17_tos; |
aoqi@0 | 957 | #else |
aoqi@0 | 958 | const Register tos = R15_esp; |
aoqi@0 | 959 | __ load_const_optimized(R25_templateTableBase, (address)Interpreter::dispatch_table((TosState)0), R11_scratch1); |
aoqi@0 | 960 | #endif |
aoqi@0 | 961 | |
aoqi@0 | 962 | // load TOS |
aoqi@0 | 963 | __ addi(tos, R1_SP, st_off); |
aoqi@0 | 964 | |
aoqi@0 | 965 | // Frame_manager expects initial_caller_sp (= SP without resize by c2i) in R21_tmp1. |
aoqi@0 | 966 | assert(sender_SP == R21_sender_SP, "passing initial caller's SP in wrong register"); |
aoqi@0 | 967 | __ bctr(); |
aoqi@0 | 968 | |
aoqi@0 | 969 | return c2i_entrypoint; |
aoqi@0 | 970 | } |
aoqi@0 | 971 | |
aoqi@0 | 972 | static void gen_i2c_adapter(MacroAssembler *masm, |
aoqi@0 | 973 | int total_args_passed, |
aoqi@0 | 974 | int comp_args_on_stack, |
aoqi@0 | 975 | const BasicType *sig_bt, |
aoqi@0 | 976 | const VMRegPair *regs) { |
aoqi@0 | 977 | |
aoqi@0 | 978 | // Load method's entry-point from method. |
aoqi@0 | 979 | __ ld(R12_scratch2, in_bytes(Method::from_compiled_offset()), R19_method); |
aoqi@0 | 980 | __ mtctr(R12_scratch2); |
aoqi@0 | 981 | |
aoqi@0 | 982 | // We will only enter here from an interpreted frame and never from after |
aoqi@0 | 983 | // passing thru a c2i. Azul allowed this but we do not. If we lose the |
aoqi@0 | 984 | // race and use a c2i we will remain interpreted for the race loser(s). |
aoqi@0 | 985 | // This removes all sorts of headaches on the x86 side and also eliminates |
aoqi@0 | 986 | // the possibility of having c2i -> i2c -> c2i -> ... endless transitions. |
aoqi@0 | 987 | |
aoqi@0 | 988 | // Note: r13 contains the senderSP on entry. We must preserve it since |
aoqi@0 | 989 | // we may do a i2c -> c2i transition if we lose a race where compiled |
aoqi@0 | 990 | // code goes non-entrant while we get args ready. |
aoqi@0 | 991 | // In addition we use r13 to locate all the interpreter args as |
aoqi@0 | 992 | // we must align the stack to 16 bytes on an i2c entry else we |
aoqi@0 | 993 | // lose alignment we expect in all compiled code and register |
aoqi@0 | 994 | // save code can segv when fxsave instructions find improperly |
aoqi@0 | 995 | // aligned stack pointer. |
aoqi@0 | 996 | |
aoqi@0 | 997 | #ifdef CC_INTERP |
aoqi@0 | 998 | const Register ld_ptr = R17_tos; |
aoqi@0 | 999 | #else |
aoqi@0 | 1000 | const Register ld_ptr = R15_esp; |
aoqi@0 | 1001 | #endif |
aoqi@0 | 1002 | |
aoqi@0 | 1003 | const Register value_regs[] = { R22_tmp2, R23_tmp3, R24_tmp4, R25_tmp5, R26_tmp6 }; |
aoqi@0 | 1004 | const int num_value_regs = sizeof(value_regs) / sizeof(Register); |
aoqi@0 | 1005 | int value_regs_index = 0; |
aoqi@0 | 1006 | |
aoqi@0 | 1007 | int ld_offset = total_args_passed*wordSize; |
aoqi@0 | 1008 | |
aoqi@0 | 1009 | // Cut-out for having no stack args. Since up to 2 int/oop args are passed |
aoqi@0 | 1010 | // in registers, we will occasionally have no stack args. |
aoqi@0 | 1011 | int comp_words_on_stack = 0; |
aoqi@0 | 1012 | if (comp_args_on_stack) { |
aoqi@0 | 1013 | // Sig words on the stack are greater-than VMRegImpl::stack0. Those in |
aoqi@0 | 1014 | // registers are below. By subtracting stack0, we either get a negative |
aoqi@0 | 1015 | // number (all values in registers) or the maximum stack slot accessed. |
aoqi@0 | 1016 | |
aoqi@0 | 1017 | // Convert 4-byte c2 stack slots to words. |
aoqi@0 | 1018 | comp_words_on_stack = round_to(comp_args_on_stack*VMRegImpl::stack_slot_size, wordSize)>>LogBytesPerWord; |
aoqi@0 | 1019 | // Round up to miminum stack alignment, in wordSize. |
aoqi@0 | 1020 | comp_words_on_stack = round_to(comp_words_on_stack, 2); |
aoqi@0 | 1021 | __ resize_frame(-comp_words_on_stack * wordSize, R11_scratch1); |
aoqi@0 | 1022 | } |
aoqi@0 | 1023 | |
aoqi@0 | 1024 | // Now generate the shuffle code. Pick up all register args and move the |
aoqi@0 | 1025 | // rest through register value=Z_R12. |
aoqi@0 | 1026 | BLOCK_COMMENT("Shuffle arguments"); |
aoqi@0 | 1027 | for (int i = 0; i < total_args_passed; i++) { |
aoqi@0 | 1028 | if (sig_bt[i] == T_VOID) { |
aoqi@0 | 1029 | assert(i > 0 && (sig_bt[i-1] == T_LONG || sig_bt[i-1] == T_DOUBLE), "missing half"); |
aoqi@0 | 1030 | continue; |
aoqi@0 | 1031 | } |
aoqi@0 | 1032 | |
aoqi@0 | 1033 | // Pick up 0, 1 or 2 words from ld_ptr. |
aoqi@0 | 1034 | assert(!regs[i].second()->is_valid() || regs[i].first()->next() == regs[i].second(), |
aoqi@0 | 1035 | "scrambled load targets?"); |
aoqi@0 | 1036 | VMReg r_1 = regs[i].first(); |
aoqi@0 | 1037 | VMReg r_2 = regs[i].second(); |
aoqi@0 | 1038 | if (!r_1->is_valid()) { |
aoqi@0 | 1039 | assert(!r_2->is_valid(), ""); |
aoqi@0 | 1040 | continue; |
aoqi@0 | 1041 | } |
aoqi@0 | 1042 | if (r_1->is_FloatRegister()) { |
aoqi@0 | 1043 | if (!r_2->is_valid()) { |
aoqi@0 | 1044 | __ lfs(r_1->as_FloatRegister(), ld_offset, ld_ptr); |
aoqi@0 | 1045 | ld_offset-=wordSize; |
aoqi@0 | 1046 | } else { |
aoqi@0 | 1047 | // Skip the unused interpreter slot. |
aoqi@0 | 1048 | __ lfd(r_1->as_FloatRegister(), ld_offset-wordSize, ld_ptr); |
aoqi@0 | 1049 | ld_offset-=2*wordSize; |
aoqi@0 | 1050 | } |
aoqi@0 | 1051 | } else { |
aoqi@0 | 1052 | Register r; |
aoqi@0 | 1053 | if (r_1->is_stack()) { |
aoqi@0 | 1054 | // Must do a memory to memory move thru "value". |
aoqi@0 | 1055 | r = value_regs[value_regs_index]; |
aoqi@0 | 1056 | value_regs_index = (value_regs_index + 1) % num_value_regs; |
aoqi@0 | 1057 | } else { |
aoqi@0 | 1058 | r = r_1->as_Register(); |
aoqi@0 | 1059 | } |
aoqi@0 | 1060 | if (!r_2->is_valid()) { |
aoqi@0 | 1061 | // Not sure we need to do this but it shouldn't hurt. |
aoqi@0 | 1062 | if (sig_bt[i] == T_OBJECT || sig_bt[i] == T_ADDRESS || sig_bt[i] == T_ARRAY) { |
aoqi@0 | 1063 | __ ld(r, ld_offset, ld_ptr); |
aoqi@0 | 1064 | ld_offset-=wordSize; |
aoqi@0 | 1065 | } else { |
aoqi@0 | 1066 | __ lwz(r, ld_offset, ld_ptr); |
aoqi@0 | 1067 | ld_offset-=wordSize; |
aoqi@0 | 1068 | } |
aoqi@0 | 1069 | } else { |
aoqi@0 | 1070 | // In 64bit, longs are given 2 64-bit slots in the interpreter, but the |
aoqi@0 | 1071 | // data is passed in only 1 slot. |
aoqi@0 | 1072 | if (sig_bt[i] == T_LONG || sig_bt[i] == T_DOUBLE) { |
aoqi@0 | 1073 | ld_offset-=wordSize; |
aoqi@0 | 1074 | } |
aoqi@0 | 1075 | __ ld(r, ld_offset, ld_ptr); |
aoqi@0 | 1076 | ld_offset-=wordSize; |
aoqi@0 | 1077 | } |
aoqi@0 | 1078 | |
aoqi@0 | 1079 | if (r_1->is_stack()) { |
aoqi@0 | 1080 | // Now store value where the compiler expects it |
aoqi@0 | 1081 | int st_off = (r_1->reg2stack() + SharedRuntime::out_preserve_stack_slots())*VMRegImpl::stack_slot_size; |
aoqi@0 | 1082 | |
aoqi@0 | 1083 | if (sig_bt[i] == T_INT || sig_bt[i] == T_FLOAT ||sig_bt[i] == T_BOOLEAN || |
aoqi@0 | 1084 | sig_bt[i] == T_SHORT || sig_bt[i] == T_CHAR || sig_bt[i] == T_BYTE) { |
aoqi@0 | 1085 | __ stw(r, st_off, R1_SP); |
aoqi@0 | 1086 | } else { |
aoqi@0 | 1087 | __ std(r, st_off, R1_SP); |
aoqi@0 | 1088 | } |
aoqi@0 | 1089 | } |
aoqi@0 | 1090 | } |
aoqi@0 | 1091 | } |
aoqi@0 | 1092 | |
aoqi@0 | 1093 | BLOCK_COMMENT("Store method"); |
aoqi@0 | 1094 | // Store method into thread->callee_target. |
aoqi@0 | 1095 | // We might end up in handle_wrong_method if the callee is |
aoqi@0 | 1096 | // deoptimized as we race thru here. If that happens we don't want |
aoqi@0 | 1097 | // to take a safepoint because the caller frame will look |
aoqi@0 | 1098 | // interpreted and arguments are now "compiled" so it is much better |
aoqi@0 | 1099 | // to make this transition invisible to the stack walking |
aoqi@0 | 1100 | // code. Unfortunately if we try and find the callee by normal means |
aoqi@0 | 1101 | // a safepoint is possible. So we stash the desired callee in the |
aoqi@0 | 1102 | // thread and the vm will find there should this case occur. |
aoqi@0 | 1103 | __ std(R19_method, thread_(callee_target)); |
aoqi@0 | 1104 | |
aoqi@0 | 1105 | // Jump to the compiled code just as if compiled code was doing it. |
aoqi@0 | 1106 | __ bctr(); |
aoqi@0 | 1107 | } |
aoqi@0 | 1108 | |
aoqi@0 | 1109 | AdapterHandlerEntry* SharedRuntime::generate_i2c2i_adapters(MacroAssembler *masm, |
aoqi@0 | 1110 | int total_args_passed, |
aoqi@0 | 1111 | int comp_args_on_stack, |
aoqi@0 | 1112 | const BasicType *sig_bt, |
aoqi@0 | 1113 | const VMRegPair *regs, |
aoqi@0 | 1114 | AdapterFingerPrint* fingerprint) { |
aoqi@0 | 1115 | address i2c_entry; |
aoqi@0 | 1116 | address c2i_unverified_entry; |
aoqi@0 | 1117 | address c2i_entry; |
aoqi@0 | 1118 | |
aoqi@0 | 1119 | |
aoqi@0 | 1120 | // entry: i2c |
aoqi@0 | 1121 | |
aoqi@0 | 1122 | __ align(CodeEntryAlignment); |
aoqi@0 | 1123 | i2c_entry = __ pc(); |
aoqi@0 | 1124 | gen_i2c_adapter(masm, total_args_passed, comp_args_on_stack, sig_bt, regs); |
aoqi@0 | 1125 | |
aoqi@0 | 1126 | |
aoqi@0 | 1127 | // entry: c2i unverified |
aoqi@0 | 1128 | |
aoqi@0 | 1129 | __ align(CodeEntryAlignment); |
aoqi@0 | 1130 | BLOCK_COMMENT("c2i unverified entry"); |
aoqi@0 | 1131 | c2i_unverified_entry = __ pc(); |
aoqi@0 | 1132 | |
aoqi@0 | 1133 | // inline_cache contains a compiledICHolder |
aoqi@0 | 1134 | const Register ic = R19_method; |
aoqi@0 | 1135 | const Register ic_klass = R11_scratch1; |
aoqi@0 | 1136 | const Register receiver_klass = R12_scratch2; |
aoqi@0 | 1137 | const Register code = R21_tmp1; |
aoqi@0 | 1138 | const Register ientry = R23_tmp3; |
aoqi@0 | 1139 | |
aoqi@0 | 1140 | assert_different_registers(ic, ic_klass, receiver_klass, R3_ARG1, code, ientry); |
aoqi@0 | 1141 | assert(R11_scratch1 == R11, "need prologue scratch register"); |
aoqi@0 | 1142 | |
aoqi@0 | 1143 | Label call_interpreter; |
aoqi@0 | 1144 | |
aoqi@0 | 1145 | assert(!MacroAssembler::needs_explicit_null_check(oopDesc::klass_offset_in_bytes()), |
aoqi@0 | 1146 | "klass offset should reach into any page"); |
aoqi@0 | 1147 | // Check for NULL argument if we don't have implicit null checks. |
aoqi@0 | 1148 | if (!ImplicitNullChecks || !os::zero_page_read_protected()) { |
aoqi@0 | 1149 | if (TrapBasedNullChecks) { |
aoqi@0 | 1150 | __ trap_null_check(R3_ARG1); |
aoqi@0 | 1151 | } else { |
aoqi@0 | 1152 | Label valid; |
aoqi@0 | 1153 | __ cmpdi(CCR0, R3_ARG1, 0); |
aoqi@0 | 1154 | __ bne_predict_taken(CCR0, valid); |
aoqi@0 | 1155 | // We have a null argument, branch to ic_miss_stub. |
aoqi@0 | 1156 | __ b64_patchable((address)SharedRuntime::get_ic_miss_stub(), |
aoqi@0 | 1157 | relocInfo::runtime_call_type); |
aoqi@0 | 1158 | __ BIND(valid); |
aoqi@0 | 1159 | } |
aoqi@0 | 1160 | } |
aoqi@0 | 1161 | // Assume argument is not NULL, load klass from receiver. |
aoqi@0 | 1162 | __ load_klass(receiver_klass, R3_ARG1); |
aoqi@0 | 1163 | |
aoqi@0 | 1164 | __ ld(ic_klass, CompiledICHolder::holder_klass_offset(), ic); |
aoqi@0 | 1165 | |
aoqi@0 | 1166 | if (TrapBasedICMissChecks) { |
aoqi@0 | 1167 | __ trap_ic_miss_check(receiver_klass, ic_klass); |
aoqi@0 | 1168 | } else { |
aoqi@0 | 1169 | Label valid; |
aoqi@0 | 1170 | __ cmpd(CCR0, receiver_klass, ic_klass); |
aoqi@0 | 1171 | __ beq_predict_taken(CCR0, valid); |
aoqi@0 | 1172 | // We have an unexpected klass, branch to ic_miss_stub. |
aoqi@0 | 1173 | __ b64_patchable((address)SharedRuntime::get_ic_miss_stub(), |
aoqi@0 | 1174 | relocInfo::runtime_call_type); |
aoqi@0 | 1175 | __ BIND(valid); |
aoqi@0 | 1176 | } |
aoqi@0 | 1177 | |
aoqi@0 | 1178 | // Argument is valid and klass is as expected, continue. |
aoqi@0 | 1179 | |
aoqi@0 | 1180 | // Extract method from inline cache, verified entry point needs it. |
aoqi@0 | 1181 | __ ld(R19_method, CompiledICHolder::holder_method_offset(), ic); |
aoqi@0 | 1182 | assert(R19_method == ic, "the inline cache register is dead here"); |
aoqi@0 | 1183 | |
aoqi@0 | 1184 | __ ld(code, method_(code)); |
aoqi@0 | 1185 | __ cmpdi(CCR0, code, 0); |
aoqi@0 | 1186 | __ ld(ientry, method_(interpreter_entry)); // preloaded |
aoqi@0 | 1187 | __ beq_predict_taken(CCR0, call_interpreter); |
aoqi@0 | 1188 | |
aoqi@0 | 1189 | // Branch to ic_miss_stub. |
aoqi@0 | 1190 | __ b64_patchable((address)SharedRuntime::get_ic_miss_stub(), relocInfo::runtime_call_type); |
aoqi@0 | 1191 | |
aoqi@0 | 1192 | // entry: c2i |
aoqi@0 | 1193 | |
aoqi@0 | 1194 | c2i_entry = gen_c2i_adapter(masm, total_args_passed, comp_args_on_stack, sig_bt, regs, call_interpreter, ientry); |
aoqi@0 | 1195 | |
aoqi@0 | 1196 | return AdapterHandlerLibrary::new_entry(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
aoqi@0 | 1197 | } |
aoqi@0 | 1198 | |
aoqi@0 | 1199 | #ifdef COMPILER2 |
aoqi@0 | 1200 | // An oop arg. Must pass a handle not the oop itself. |
aoqi@0 | 1201 | static void object_move(MacroAssembler* masm, |
aoqi@0 | 1202 | int frame_size_in_slots, |
aoqi@0 | 1203 | OopMap* oop_map, int oop_handle_offset, |
aoqi@0 | 1204 | bool is_receiver, int* receiver_offset, |
aoqi@0 | 1205 | VMRegPair src, VMRegPair dst, |
aoqi@0 | 1206 | Register r_caller_sp, Register r_temp_1, Register r_temp_2) { |
aoqi@0 | 1207 | assert(!is_receiver || (is_receiver && (*receiver_offset == -1)), |
aoqi@0 | 1208 | "receiver has already been moved"); |
aoqi@0 | 1209 | |
aoqi@0 | 1210 | // We must pass a handle. First figure out the location we use as a handle. |
aoqi@0 | 1211 | |
aoqi@0 | 1212 | if (src.first()->is_stack()) { |
aoqi@0 | 1213 | // stack to stack or reg |
aoqi@0 | 1214 | |
aoqi@0 | 1215 | const Register r_handle = dst.first()->is_stack() ? r_temp_1 : dst.first()->as_Register(); |
aoqi@0 | 1216 | Label skip; |
aoqi@0 | 1217 | const int oop_slot_in_callers_frame = reg2slot(src.first()); |
aoqi@0 | 1218 | |
aoqi@0 | 1219 | guarantee(!is_receiver, "expecting receiver in register"); |
aoqi@0 | 1220 | oop_map->set_oop(VMRegImpl::stack2reg(oop_slot_in_callers_frame + frame_size_in_slots)); |
aoqi@0 | 1221 | |
aoqi@0 | 1222 | __ addi(r_handle, r_caller_sp, reg2offset(src.first())); |
aoqi@0 | 1223 | __ ld( r_temp_2, reg2offset(src.first()), r_caller_sp); |
aoqi@0 | 1224 | __ cmpdi(CCR0, r_temp_2, 0); |
aoqi@0 | 1225 | __ bne(CCR0, skip); |
aoqi@0 | 1226 | // Use a NULL handle if oop is NULL. |
aoqi@0 | 1227 | __ li(r_handle, 0); |
aoqi@0 | 1228 | __ bind(skip); |
aoqi@0 | 1229 | |
aoqi@0 | 1230 | if (dst.first()->is_stack()) { |
aoqi@0 | 1231 | // stack to stack |
aoqi@0 | 1232 | __ std(r_handle, reg2offset(dst.first()), R1_SP); |
aoqi@0 | 1233 | } else { |
aoqi@0 | 1234 | // stack to reg |
aoqi@0 | 1235 | // Nothing to do, r_handle is already the dst register. |
aoqi@0 | 1236 | } |
aoqi@0 | 1237 | } else { |
aoqi@0 | 1238 | // reg to stack or reg |
aoqi@0 | 1239 | const Register r_oop = src.first()->as_Register(); |
aoqi@0 | 1240 | const Register r_handle = dst.first()->is_stack() ? r_temp_1 : dst.first()->as_Register(); |
aoqi@0 | 1241 | const int oop_slot = (r_oop->encoding()-R3_ARG1->encoding()) * VMRegImpl::slots_per_word |
aoqi@0 | 1242 | + oop_handle_offset; // in slots |
aoqi@0 | 1243 | const int oop_offset = oop_slot * VMRegImpl::stack_slot_size; |
aoqi@0 | 1244 | Label skip; |
aoqi@0 | 1245 | |
aoqi@0 | 1246 | if (is_receiver) { |
aoqi@0 | 1247 | *receiver_offset = oop_offset; |
aoqi@0 | 1248 | } |
aoqi@0 | 1249 | oop_map->set_oop(VMRegImpl::stack2reg(oop_slot)); |
aoqi@0 | 1250 | |
aoqi@0 | 1251 | __ std( r_oop, oop_offset, R1_SP); |
aoqi@0 | 1252 | __ addi(r_handle, R1_SP, oop_offset); |
aoqi@0 | 1253 | |
aoqi@0 | 1254 | __ cmpdi(CCR0, r_oop, 0); |
aoqi@0 | 1255 | __ bne(CCR0, skip); |
aoqi@0 | 1256 | // Use a NULL handle if oop is NULL. |
aoqi@0 | 1257 | __ li(r_handle, 0); |
aoqi@0 | 1258 | __ bind(skip); |
aoqi@0 | 1259 | |
aoqi@0 | 1260 | if (dst.first()->is_stack()) { |
aoqi@0 | 1261 | // reg to stack |
aoqi@0 | 1262 | __ std(r_handle, reg2offset(dst.first()), R1_SP); |
aoqi@0 | 1263 | } else { |
aoqi@0 | 1264 | // reg to reg |
aoqi@0 | 1265 | // Nothing to do, r_handle is already the dst register. |
aoqi@0 | 1266 | } |
aoqi@0 | 1267 | } |
aoqi@0 | 1268 | } |
aoqi@0 | 1269 | |
aoqi@0 | 1270 | static void int_move(MacroAssembler*masm, |
aoqi@0 | 1271 | VMRegPair src, VMRegPair dst, |
aoqi@0 | 1272 | Register r_caller_sp, Register r_temp) { |
aoqi@0 | 1273 | assert(src.first()->is_valid() && src.second() == src.first()->next(), "incoming must be long-int"); |
aoqi@0 | 1274 | assert(dst.first()->is_valid() && dst.second() == dst.first()->next(), "outgoing must be long"); |
aoqi@0 | 1275 | |
aoqi@0 | 1276 | if (src.first()->is_stack()) { |
aoqi@0 | 1277 | if (dst.first()->is_stack()) { |
aoqi@0 | 1278 | // stack to stack |
aoqi@0 | 1279 | __ lwa(r_temp, reg2offset(src.first()), r_caller_sp); |
aoqi@0 | 1280 | __ std(r_temp, reg2offset(dst.first()), R1_SP); |
aoqi@0 | 1281 | } else { |
aoqi@0 | 1282 | // stack to reg |
aoqi@0 | 1283 | __ lwa(dst.first()->as_Register(), reg2offset(src.first()), r_caller_sp); |
aoqi@0 | 1284 | } |
aoqi@0 | 1285 | } else if (dst.first()->is_stack()) { |
aoqi@0 | 1286 | // reg to stack |
aoqi@0 | 1287 | __ extsw(r_temp, src.first()->as_Register()); |
aoqi@0 | 1288 | __ std(r_temp, reg2offset(dst.first()), R1_SP); |
aoqi@0 | 1289 | } else { |
aoqi@0 | 1290 | // reg to reg |
aoqi@0 | 1291 | __ extsw(dst.first()->as_Register(), src.first()->as_Register()); |
aoqi@0 | 1292 | } |
aoqi@0 | 1293 | } |
aoqi@0 | 1294 | |
aoqi@0 | 1295 | static void long_move(MacroAssembler*masm, |
aoqi@0 | 1296 | VMRegPair src, VMRegPair dst, |
aoqi@0 | 1297 | Register r_caller_sp, Register r_temp) { |
aoqi@0 | 1298 | assert(src.first()->is_valid() && src.second() == src.first()->next(), "incoming must be long"); |
aoqi@0 | 1299 | assert(dst.first()->is_valid() && dst.second() == dst.first()->next(), "outgoing must be long"); |
aoqi@0 | 1300 | |
aoqi@0 | 1301 | if (src.first()->is_stack()) { |
aoqi@0 | 1302 | if (dst.first()->is_stack()) { |
aoqi@0 | 1303 | // stack to stack |
aoqi@0 | 1304 | __ ld( r_temp, reg2offset(src.first()), r_caller_sp); |
aoqi@0 | 1305 | __ std(r_temp, reg2offset(dst.first()), R1_SP); |
aoqi@0 | 1306 | } else { |
aoqi@0 | 1307 | // stack to reg |
aoqi@0 | 1308 | __ ld(dst.first()->as_Register(), reg2offset(src.first()), r_caller_sp); |
aoqi@0 | 1309 | } |
aoqi@0 | 1310 | } else if (dst.first()->is_stack()) { |
aoqi@0 | 1311 | // reg to stack |
aoqi@0 | 1312 | __ std(src.first()->as_Register(), reg2offset(dst.first()), R1_SP); |
aoqi@0 | 1313 | } else { |
aoqi@0 | 1314 | // reg to reg |
aoqi@0 | 1315 | if (dst.first()->as_Register() != src.first()->as_Register()) |
aoqi@0 | 1316 | __ mr(dst.first()->as_Register(), src.first()->as_Register()); |
aoqi@0 | 1317 | } |
aoqi@0 | 1318 | } |
aoqi@0 | 1319 | |
aoqi@0 | 1320 | static void float_move(MacroAssembler*masm, |
aoqi@0 | 1321 | VMRegPair src, VMRegPair dst, |
aoqi@0 | 1322 | Register r_caller_sp, Register r_temp) { |
aoqi@0 | 1323 | assert(src.first()->is_valid() && !src.second()->is_valid(), "incoming must be float"); |
aoqi@0 | 1324 | assert(dst.first()->is_valid() && !dst.second()->is_valid(), "outgoing must be float"); |
aoqi@0 | 1325 | |
aoqi@0 | 1326 | if (src.first()->is_stack()) { |
aoqi@0 | 1327 | if (dst.first()->is_stack()) { |
aoqi@0 | 1328 | // stack to stack |
aoqi@0 | 1329 | __ lwz(r_temp, reg2offset(src.first()), r_caller_sp); |
aoqi@0 | 1330 | __ stw(r_temp, reg2offset(dst.first()), R1_SP); |
aoqi@0 | 1331 | } else { |
aoqi@0 | 1332 | // stack to reg |
aoqi@0 | 1333 | __ lfs(dst.first()->as_FloatRegister(), reg2offset(src.first()), r_caller_sp); |
aoqi@0 | 1334 | } |
aoqi@0 | 1335 | } else if (dst.first()->is_stack()) { |
aoqi@0 | 1336 | // reg to stack |
aoqi@0 | 1337 | __ stfs(src.first()->as_FloatRegister(), reg2offset(dst.first()), R1_SP); |
aoqi@0 | 1338 | } else { |
aoqi@0 | 1339 | // reg to reg |
aoqi@0 | 1340 | if (dst.first()->as_FloatRegister() != src.first()->as_FloatRegister()) |
aoqi@0 | 1341 | __ fmr(dst.first()->as_FloatRegister(), src.first()->as_FloatRegister()); |
aoqi@0 | 1342 | } |
aoqi@0 | 1343 | } |
aoqi@0 | 1344 | |
aoqi@0 | 1345 | static void double_move(MacroAssembler*masm, |
aoqi@0 | 1346 | VMRegPair src, VMRegPair dst, |
aoqi@0 | 1347 | Register r_caller_sp, Register r_temp) { |
aoqi@0 | 1348 | assert(src.first()->is_valid() && src.second() == src.first()->next(), "incoming must be double"); |
aoqi@0 | 1349 | assert(dst.first()->is_valid() && dst.second() == dst.first()->next(), "outgoing must be double"); |
aoqi@0 | 1350 | |
aoqi@0 | 1351 | if (src.first()->is_stack()) { |
aoqi@0 | 1352 | if (dst.first()->is_stack()) { |
aoqi@0 | 1353 | // stack to stack |
aoqi@0 | 1354 | __ ld( r_temp, reg2offset(src.first()), r_caller_sp); |
aoqi@0 | 1355 | __ std(r_temp, reg2offset(dst.first()), R1_SP); |
aoqi@0 | 1356 | } else { |
aoqi@0 | 1357 | // stack to reg |
aoqi@0 | 1358 | __ lfd(dst.first()->as_FloatRegister(), reg2offset(src.first()), r_caller_sp); |
aoqi@0 | 1359 | } |
aoqi@0 | 1360 | } else if (dst.first()->is_stack()) { |
aoqi@0 | 1361 | // reg to stack |
aoqi@0 | 1362 | __ stfd(src.first()->as_FloatRegister(), reg2offset(dst.first()), R1_SP); |
aoqi@0 | 1363 | } else { |
aoqi@0 | 1364 | // reg to reg |
aoqi@0 | 1365 | if (dst.first()->as_FloatRegister() != src.first()->as_FloatRegister()) |
aoqi@0 | 1366 | __ fmr(dst.first()->as_FloatRegister(), src.first()->as_FloatRegister()); |
aoqi@0 | 1367 | } |
aoqi@0 | 1368 | } |
aoqi@0 | 1369 | |
aoqi@0 | 1370 | void SharedRuntime::save_native_result(MacroAssembler *masm, BasicType ret_type, int frame_slots) { |
aoqi@0 | 1371 | switch (ret_type) { |
aoqi@0 | 1372 | case T_BOOLEAN: |
aoqi@0 | 1373 | case T_CHAR: |
aoqi@0 | 1374 | case T_BYTE: |
aoqi@0 | 1375 | case T_SHORT: |
aoqi@0 | 1376 | case T_INT: |
aoqi@0 | 1377 | __ stw (R3_RET, frame_slots*VMRegImpl::stack_slot_size, R1_SP); |
aoqi@0 | 1378 | break; |
aoqi@0 | 1379 | case T_ARRAY: |
aoqi@0 | 1380 | case T_OBJECT: |
aoqi@0 | 1381 | case T_LONG: |
aoqi@0 | 1382 | __ std (R3_RET, frame_slots*VMRegImpl::stack_slot_size, R1_SP); |
aoqi@0 | 1383 | break; |
aoqi@0 | 1384 | case T_FLOAT: |
aoqi@0 | 1385 | __ stfs(F1_RET, frame_slots*VMRegImpl::stack_slot_size, R1_SP); |
aoqi@0 | 1386 | break; |
aoqi@0 | 1387 | case T_DOUBLE: |
aoqi@0 | 1388 | __ stfd(F1_RET, frame_slots*VMRegImpl::stack_slot_size, R1_SP); |
aoqi@0 | 1389 | break; |
aoqi@0 | 1390 | case T_VOID: |
aoqi@0 | 1391 | break; |
aoqi@0 | 1392 | default: |
aoqi@0 | 1393 | ShouldNotReachHere(); |
aoqi@0 | 1394 | break; |
aoqi@0 | 1395 | } |
aoqi@0 | 1396 | } |
aoqi@0 | 1397 | |
aoqi@0 | 1398 | void SharedRuntime::restore_native_result(MacroAssembler *masm, BasicType ret_type, int frame_slots) { |
aoqi@0 | 1399 | switch (ret_type) { |
aoqi@0 | 1400 | case T_BOOLEAN: |
aoqi@0 | 1401 | case T_CHAR: |
aoqi@0 | 1402 | case T_BYTE: |
aoqi@0 | 1403 | case T_SHORT: |
aoqi@0 | 1404 | case T_INT: |
aoqi@0 | 1405 | __ lwz(R3_RET, frame_slots*VMRegImpl::stack_slot_size, R1_SP); |
aoqi@0 | 1406 | break; |
aoqi@0 | 1407 | case T_ARRAY: |
aoqi@0 | 1408 | case T_OBJECT: |
aoqi@0 | 1409 | case T_LONG: |
aoqi@0 | 1410 | __ ld (R3_RET, frame_slots*VMRegImpl::stack_slot_size, R1_SP); |
aoqi@0 | 1411 | break; |
aoqi@0 | 1412 | case T_FLOAT: |
aoqi@0 | 1413 | __ lfs(F1_RET, frame_slots*VMRegImpl::stack_slot_size, R1_SP); |
aoqi@0 | 1414 | break; |
aoqi@0 | 1415 | case T_DOUBLE: |
aoqi@0 | 1416 | __ lfd(F1_RET, frame_slots*VMRegImpl::stack_slot_size, R1_SP); |
aoqi@0 | 1417 | break; |
aoqi@0 | 1418 | case T_VOID: |
aoqi@0 | 1419 | break; |
aoqi@0 | 1420 | default: |
aoqi@0 | 1421 | ShouldNotReachHere(); |
aoqi@0 | 1422 | break; |
aoqi@0 | 1423 | } |
aoqi@0 | 1424 | } |
aoqi@0 | 1425 | |
aoqi@0 | 1426 | static void save_or_restore_arguments(MacroAssembler* masm, |
aoqi@0 | 1427 | const int stack_slots, |
aoqi@0 | 1428 | const int total_in_args, |
aoqi@0 | 1429 | const int arg_save_area, |
aoqi@0 | 1430 | OopMap* map, |
aoqi@0 | 1431 | VMRegPair* in_regs, |
aoqi@0 | 1432 | BasicType* in_sig_bt) { |
aoqi@0 | 1433 | // If map is non-NULL then the code should store the values, |
aoqi@0 | 1434 | // otherwise it should load them. |
aoqi@0 | 1435 | int slot = arg_save_area; |
aoqi@0 | 1436 | // Save down double word first. |
aoqi@0 | 1437 | for (int i = 0; i < total_in_args; i++) { |
aoqi@0 | 1438 | if (in_regs[i].first()->is_FloatRegister() && in_sig_bt[i] == T_DOUBLE) { |
aoqi@0 | 1439 | int offset = slot * VMRegImpl::stack_slot_size; |
aoqi@0 | 1440 | slot += VMRegImpl::slots_per_word; |
aoqi@0 | 1441 | assert(slot <= stack_slots, "overflow (after DOUBLE stack slot)"); |
aoqi@0 | 1442 | if (map != NULL) { |
aoqi@0 | 1443 | __ stfd(in_regs[i].first()->as_FloatRegister(), offset, R1_SP); |
aoqi@0 | 1444 | } else { |
aoqi@0 | 1445 | __ lfd(in_regs[i].first()->as_FloatRegister(), offset, R1_SP); |
aoqi@0 | 1446 | } |
aoqi@0 | 1447 | } else if (in_regs[i].first()->is_Register() && |
aoqi@0 | 1448 | (in_sig_bt[i] == T_LONG || in_sig_bt[i] == T_ARRAY)) { |
aoqi@0 | 1449 | int offset = slot * VMRegImpl::stack_slot_size; |
aoqi@0 | 1450 | if (map != NULL) { |
aoqi@0 | 1451 | __ std(in_regs[i].first()->as_Register(), offset, R1_SP); |
aoqi@0 | 1452 | if (in_sig_bt[i] == T_ARRAY) { |
aoqi@0 | 1453 | map->set_oop(VMRegImpl::stack2reg(slot)); |
aoqi@0 | 1454 | } |
aoqi@0 | 1455 | } else { |
aoqi@0 | 1456 | __ ld(in_regs[i].first()->as_Register(), offset, R1_SP); |
aoqi@0 | 1457 | } |
aoqi@0 | 1458 | slot += VMRegImpl::slots_per_word; |
aoqi@0 | 1459 | assert(slot <= stack_slots, "overflow (after LONG/ARRAY stack slot)"); |
aoqi@0 | 1460 | } |
aoqi@0 | 1461 | } |
aoqi@0 | 1462 | // Save or restore single word registers. |
aoqi@0 | 1463 | for (int i = 0; i < total_in_args; i++) { |
aoqi@0 | 1464 | // PPC64: pass ints as longs: must only deal with floats here. |
aoqi@0 | 1465 | if (in_regs[i].first()->is_FloatRegister()) { |
aoqi@0 | 1466 | if (in_sig_bt[i] == T_FLOAT) { |
aoqi@0 | 1467 | int offset = slot * VMRegImpl::stack_slot_size; |
aoqi@0 | 1468 | slot++; |
aoqi@0 | 1469 | assert(slot <= stack_slots, "overflow (after FLOAT stack slot)"); |
aoqi@0 | 1470 | if (map != NULL) { |
aoqi@0 | 1471 | __ stfs(in_regs[i].first()->as_FloatRegister(), offset, R1_SP); |
aoqi@0 | 1472 | } else { |
aoqi@0 | 1473 | __ lfs(in_regs[i].first()->as_FloatRegister(), offset, R1_SP); |
aoqi@0 | 1474 | } |
aoqi@0 | 1475 | } |
aoqi@0 | 1476 | } else if (in_regs[i].first()->is_stack()) { |
aoqi@0 | 1477 | if (in_sig_bt[i] == T_ARRAY && map != NULL) { |
aoqi@0 | 1478 | int offset_in_older_frame = in_regs[i].first()->reg2stack() + SharedRuntime::out_preserve_stack_slots(); |
aoqi@0 | 1479 | map->set_oop(VMRegImpl::stack2reg(offset_in_older_frame + stack_slots)); |
aoqi@0 | 1480 | } |
aoqi@0 | 1481 | } |
aoqi@0 | 1482 | } |
aoqi@0 | 1483 | } |
aoqi@0 | 1484 | |
aoqi@0 | 1485 | // Check GC_locker::needs_gc and enter the runtime if it's true. This |
aoqi@0 | 1486 | // keeps a new JNI critical region from starting until a GC has been |
aoqi@0 | 1487 | // forced. Save down any oops in registers and describe them in an |
aoqi@0 | 1488 | // OopMap. |
aoqi@0 | 1489 | static void check_needs_gc_for_critical_native(MacroAssembler* masm, |
aoqi@0 | 1490 | const int stack_slots, |
aoqi@0 | 1491 | const int total_in_args, |
aoqi@0 | 1492 | const int arg_save_area, |
aoqi@0 | 1493 | OopMapSet* oop_maps, |
aoqi@0 | 1494 | VMRegPair* in_regs, |
aoqi@0 | 1495 | BasicType* in_sig_bt, |
aoqi@0 | 1496 | Register tmp_reg ) { |
aoqi@0 | 1497 | __ block_comment("check GC_locker::needs_gc"); |
aoqi@0 | 1498 | Label cont; |
aoqi@0 | 1499 | __ lbz(tmp_reg, (RegisterOrConstant)(intptr_t)GC_locker::needs_gc_address()); |
aoqi@0 | 1500 | __ cmplwi(CCR0, tmp_reg, 0); |
aoqi@0 | 1501 | __ beq(CCR0, cont); |
aoqi@0 | 1502 | |
aoqi@0 | 1503 | // Save down any values that are live in registers and call into the |
aoqi@0 | 1504 | // runtime to halt for a GC. |
aoqi@0 | 1505 | OopMap* map = new OopMap(stack_slots * 2, 0 /* arg_slots*/); |
aoqi@0 | 1506 | save_or_restore_arguments(masm, stack_slots, total_in_args, |
aoqi@0 | 1507 | arg_save_area, map, in_regs, in_sig_bt); |
aoqi@0 | 1508 | |
aoqi@0 | 1509 | __ mr(R3_ARG1, R16_thread); |
aoqi@0 | 1510 | __ set_last_Java_frame(R1_SP, noreg); |
aoqi@0 | 1511 | |
aoqi@0 | 1512 | __ block_comment("block_for_jni_critical"); |
aoqi@0 | 1513 | address entry_point = CAST_FROM_FN_PTR(address, SharedRuntime::block_for_jni_critical); |
aoqi@0 | 1514 | #if defined(ABI_ELFv2) |
aoqi@0 | 1515 | __ call_c(entry_point, relocInfo::runtime_call_type); |
aoqi@0 | 1516 | #else |
aoqi@0 | 1517 | __ call_c(CAST_FROM_FN_PTR(FunctionDescriptor*, entry_point), relocInfo::runtime_call_type); |
aoqi@0 | 1518 | #endif |
aoqi@0 | 1519 | address start = __ pc() - __ offset(), |
aoqi@0 | 1520 | calls_return_pc = __ last_calls_return_pc(); |
aoqi@0 | 1521 | oop_maps->add_gc_map(calls_return_pc - start, map); |
aoqi@0 | 1522 | |
aoqi@0 | 1523 | __ reset_last_Java_frame(); |
aoqi@0 | 1524 | |
aoqi@0 | 1525 | // Reload all the register arguments. |
aoqi@0 | 1526 | save_or_restore_arguments(masm, stack_slots, total_in_args, |
aoqi@0 | 1527 | arg_save_area, NULL, in_regs, in_sig_bt); |
aoqi@0 | 1528 | |
aoqi@0 | 1529 | __ BIND(cont); |
aoqi@0 | 1530 | |
aoqi@0 | 1531 | #ifdef ASSERT |
aoqi@0 | 1532 | if (StressCriticalJNINatives) { |
aoqi@0 | 1533 | // Stress register saving. |
aoqi@0 | 1534 | OopMap* map = new OopMap(stack_slots * 2, 0 /* arg_slots*/); |
aoqi@0 | 1535 | save_or_restore_arguments(masm, stack_slots, total_in_args, |
aoqi@0 | 1536 | arg_save_area, map, in_regs, in_sig_bt); |
aoqi@0 | 1537 | // Destroy argument registers. |
aoqi@0 | 1538 | for (int i = 0; i < total_in_args; i++) { |
aoqi@0 | 1539 | if (in_regs[i].first()->is_Register()) { |
aoqi@0 | 1540 | const Register reg = in_regs[i].first()->as_Register(); |
aoqi@0 | 1541 | __ neg(reg, reg); |
aoqi@0 | 1542 | } else if (in_regs[i].first()->is_FloatRegister()) { |
aoqi@0 | 1543 | __ fneg(in_regs[i].first()->as_FloatRegister(), in_regs[i].first()->as_FloatRegister()); |
aoqi@0 | 1544 | } |
aoqi@0 | 1545 | } |
aoqi@0 | 1546 | |
aoqi@0 | 1547 | save_or_restore_arguments(masm, stack_slots, total_in_args, |
aoqi@0 | 1548 | arg_save_area, NULL, in_regs, in_sig_bt); |
aoqi@0 | 1549 | } |
aoqi@0 | 1550 | #endif |
aoqi@0 | 1551 | } |
aoqi@0 | 1552 | |
aoqi@0 | 1553 | static void move_ptr(MacroAssembler* masm, VMRegPair src, VMRegPair dst, Register r_caller_sp, Register r_temp) { |
aoqi@0 | 1554 | if (src.first()->is_stack()) { |
aoqi@0 | 1555 | if (dst.first()->is_stack()) { |
aoqi@0 | 1556 | // stack to stack |
aoqi@0 | 1557 | __ ld(r_temp, reg2offset(src.first()), r_caller_sp); |
aoqi@0 | 1558 | __ std(r_temp, reg2offset(dst.first()), R1_SP); |
aoqi@0 | 1559 | } else { |
aoqi@0 | 1560 | // stack to reg |
aoqi@0 | 1561 | __ ld(dst.first()->as_Register(), reg2offset(src.first()), r_caller_sp); |
aoqi@0 | 1562 | } |
aoqi@0 | 1563 | } else if (dst.first()->is_stack()) { |
aoqi@0 | 1564 | // reg to stack |
aoqi@0 | 1565 | __ std(src.first()->as_Register(), reg2offset(dst.first()), R1_SP); |
aoqi@0 | 1566 | } else { |
aoqi@0 | 1567 | if (dst.first() != src.first()) { |
aoqi@0 | 1568 | __ mr(dst.first()->as_Register(), src.first()->as_Register()); |
aoqi@0 | 1569 | } |
aoqi@0 | 1570 | } |
aoqi@0 | 1571 | } |
aoqi@0 | 1572 | |
aoqi@0 | 1573 | // Unpack an array argument into a pointer to the body and the length |
aoqi@0 | 1574 | // if the array is non-null, otherwise pass 0 for both. |
aoqi@0 | 1575 | static void unpack_array_argument(MacroAssembler* masm, VMRegPair reg, BasicType in_elem_type, |
aoqi@0 | 1576 | VMRegPair body_arg, VMRegPair length_arg, Register r_caller_sp, |
aoqi@0 | 1577 | Register tmp_reg, Register tmp2_reg) { |
aoqi@0 | 1578 | assert(!body_arg.first()->is_Register() || body_arg.first()->as_Register() != tmp_reg, |
aoqi@0 | 1579 | "possible collision"); |
aoqi@0 | 1580 | assert(!length_arg.first()->is_Register() || length_arg.first()->as_Register() != tmp_reg, |
aoqi@0 | 1581 | "possible collision"); |
aoqi@0 | 1582 | |
aoqi@0 | 1583 | // Pass the length, ptr pair. |
aoqi@0 | 1584 | Label set_out_args; |
aoqi@0 | 1585 | VMRegPair tmp, tmp2; |
aoqi@0 | 1586 | tmp.set_ptr(tmp_reg->as_VMReg()); |
aoqi@0 | 1587 | tmp2.set_ptr(tmp2_reg->as_VMReg()); |
aoqi@0 | 1588 | if (reg.first()->is_stack()) { |
aoqi@0 | 1589 | // Load the arg up from the stack. |
aoqi@0 | 1590 | move_ptr(masm, reg, tmp, r_caller_sp, /*unused*/ R0); |
aoqi@0 | 1591 | reg = tmp; |
aoqi@0 | 1592 | } |
aoqi@0 | 1593 | __ li(tmp2_reg, 0); // Pass zeros if Array=null. |
aoqi@0 | 1594 | if (tmp_reg != reg.first()->as_Register()) __ li(tmp_reg, 0); |
aoqi@0 | 1595 | __ cmpdi(CCR0, reg.first()->as_Register(), 0); |
aoqi@0 | 1596 | __ beq(CCR0, set_out_args); |
aoqi@0 | 1597 | __ lwa(tmp2_reg, arrayOopDesc::length_offset_in_bytes(), reg.first()->as_Register()); |
aoqi@0 | 1598 | __ addi(tmp_reg, reg.first()->as_Register(), arrayOopDesc::base_offset_in_bytes(in_elem_type)); |
aoqi@0 | 1599 | __ bind(set_out_args); |
aoqi@0 | 1600 | move_ptr(masm, tmp, body_arg, r_caller_sp, /*unused*/ R0); |
aoqi@0 | 1601 | move_ptr(masm, tmp2, length_arg, r_caller_sp, /*unused*/ R0); // Same as move32_64 on PPC64. |
aoqi@0 | 1602 | } |
aoqi@0 | 1603 | |
aoqi@0 | 1604 | static void verify_oop_args(MacroAssembler* masm, |
aoqi@0 | 1605 | methodHandle method, |
aoqi@0 | 1606 | const BasicType* sig_bt, |
aoqi@0 | 1607 | const VMRegPair* regs) { |
aoqi@0 | 1608 | Register temp_reg = R19_method; // not part of any compiled calling seq |
aoqi@0 | 1609 | if (VerifyOops) { |
aoqi@0 | 1610 | for (int i = 0; i < method->size_of_parameters(); i++) { |
aoqi@0 | 1611 | if (sig_bt[i] == T_OBJECT || |
aoqi@0 | 1612 | sig_bt[i] == T_ARRAY) { |
aoqi@0 | 1613 | VMReg r = regs[i].first(); |
aoqi@0 | 1614 | assert(r->is_valid(), "bad oop arg"); |
aoqi@0 | 1615 | if (r->is_stack()) { |
aoqi@0 | 1616 | __ ld(temp_reg, reg2offset(r), R1_SP); |
aoqi@0 | 1617 | __ verify_oop(temp_reg); |
aoqi@0 | 1618 | } else { |
aoqi@0 | 1619 | __ verify_oop(r->as_Register()); |
aoqi@0 | 1620 | } |
aoqi@0 | 1621 | } |
aoqi@0 | 1622 | } |
aoqi@0 | 1623 | } |
aoqi@0 | 1624 | } |
aoqi@0 | 1625 | |
aoqi@0 | 1626 | static void gen_special_dispatch(MacroAssembler* masm, |
aoqi@0 | 1627 | methodHandle method, |
aoqi@0 | 1628 | const BasicType* sig_bt, |
aoqi@0 | 1629 | const VMRegPair* regs) { |
aoqi@0 | 1630 | verify_oop_args(masm, method, sig_bt, regs); |
aoqi@0 | 1631 | vmIntrinsics::ID iid = method->intrinsic_id(); |
aoqi@0 | 1632 | |
aoqi@0 | 1633 | // Now write the args into the outgoing interpreter space |
aoqi@0 | 1634 | bool has_receiver = false; |
aoqi@0 | 1635 | Register receiver_reg = noreg; |
aoqi@0 | 1636 | int member_arg_pos = -1; |
aoqi@0 | 1637 | Register member_reg = noreg; |
aoqi@0 | 1638 | int ref_kind = MethodHandles::signature_polymorphic_intrinsic_ref_kind(iid); |
aoqi@0 | 1639 | if (ref_kind != 0) { |
aoqi@0 | 1640 | member_arg_pos = method->size_of_parameters() - 1; // trailing MemberName argument |
aoqi@0 | 1641 | member_reg = R19_method; // known to be free at this point |
aoqi@0 | 1642 | has_receiver = MethodHandles::ref_kind_has_receiver(ref_kind); |
aoqi@0 | 1643 | } else if (iid == vmIntrinsics::_invokeBasic) { |
aoqi@0 | 1644 | has_receiver = true; |
aoqi@0 | 1645 | } else { |
aoqi@0 | 1646 | fatal(err_msg_res("unexpected intrinsic id %d", iid)); |
aoqi@0 | 1647 | } |
aoqi@0 | 1648 | |
aoqi@0 | 1649 | if (member_reg != noreg) { |
aoqi@0 | 1650 | // Load the member_arg into register, if necessary. |
aoqi@0 | 1651 | SharedRuntime::check_member_name_argument_is_last_argument(method, sig_bt, regs); |
aoqi@0 | 1652 | VMReg r = regs[member_arg_pos].first(); |
aoqi@0 | 1653 | if (r->is_stack()) { |
aoqi@0 | 1654 | __ ld(member_reg, reg2offset(r), R1_SP); |
aoqi@0 | 1655 | } else { |
aoqi@0 | 1656 | // no data motion is needed |
aoqi@0 | 1657 | member_reg = r->as_Register(); |
aoqi@0 | 1658 | } |
aoqi@0 | 1659 | } |
aoqi@0 | 1660 | |
aoqi@0 | 1661 | if (has_receiver) { |
aoqi@0 | 1662 | // Make sure the receiver is loaded into a register. |
aoqi@0 | 1663 | assert(method->size_of_parameters() > 0, "oob"); |
aoqi@0 | 1664 | assert(sig_bt[0] == T_OBJECT, "receiver argument must be an object"); |
aoqi@0 | 1665 | VMReg r = regs[0].first(); |
aoqi@0 | 1666 | assert(r->is_valid(), "bad receiver arg"); |
aoqi@0 | 1667 | if (r->is_stack()) { |
aoqi@0 | 1668 | // Porting note: This assumes that compiled calling conventions always |
aoqi@0 | 1669 | // pass the receiver oop in a register. If this is not true on some |
aoqi@0 | 1670 | // platform, pick a temp and load the receiver from stack. |
aoqi@0 | 1671 | fatal("receiver always in a register"); |
aoqi@0 | 1672 | receiver_reg = R11_scratch1; // TODO (hs24): is R11_scratch1 really free at this point? |
aoqi@0 | 1673 | __ ld(receiver_reg, reg2offset(r), R1_SP); |
aoqi@0 | 1674 | } else { |
aoqi@0 | 1675 | // no data motion is needed |
aoqi@0 | 1676 | receiver_reg = r->as_Register(); |
aoqi@0 | 1677 | } |
aoqi@0 | 1678 | } |
aoqi@0 | 1679 | |
aoqi@0 | 1680 | // Figure out which address we are really jumping to: |
aoqi@0 | 1681 | MethodHandles::generate_method_handle_dispatch(masm, iid, |
aoqi@0 | 1682 | receiver_reg, member_reg, /*for_compiler_entry:*/ true); |
aoqi@0 | 1683 | } |
aoqi@0 | 1684 | |
aoqi@0 | 1685 | #endif // COMPILER2 |
aoqi@0 | 1686 | |
aoqi@0 | 1687 | // --------------------------------------------------------------------------- |
aoqi@0 | 1688 | // Generate a native wrapper for a given method. The method takes arguments |
aoqi@0 | 1689 | // in the Java compiled code convention, marshals them to the native |
aoqi@0 | 1690 | // convention (handlizes oops, etc), transitions to native, makes the call, |
aoqi@0 | 1691 | // returns to java state (possibly blocking), unhandlizes any result and |
aoqi@0 | 1692 | // returns. |
aoqi@0 | 1693 | // |
aoqi@0 | 1694 | // Critical native functions are a shorthand for the use of |
aoqi@0 | 1695 | // GetPrimtiveArrayCritical and disallow the use of any other JNI |
aoqi@0 | 1696 | // functions. The wrapper is expected to unpack the arguments before |
aoqi@0 | 1697 | // passing them to the callee and perform checks before and after the |
aoqi@0 | 1698 | // native call to ensure that they GC_locker |
aoqi@0 | 1699 | // lock_critical/unlock_critical semantics are followed. Some other |
aoqi@0 | 1700 | // parts of JNI setup are skipped like the tear down of the JNI handle |
aoqi@0 | 1701 | // block and the check for pending exceptions it's impossible for them |
aoqi@0 | 1702 | // to be thrown. |
aoqi@0 | 1703 | // |
aoqi@0 | 1704 | // They are roughly structured like this: |
aoqi@0 | 1705 | // if (GC_locker::needs_gc()) |
aoqi@0 | 1706 | // SharedRuntime::block_for_jni_critical(); |
aoqi@0 | 1707 | // tranistion to thread_in_native |
aoqi@0 | 1708 | // unpack arrray arguments and call native entry point |
aoqi@0 | 1709 | // check for safepoint in progress |
aoqi@0 | 1710 | // check if any thread suspend flags are set |
aoqi@0 | 1711 | // call into JVM and possible unlock the JNI critical |
aoqi@0 | 1712 | // if a GC was suppressed while in the critical native. |
aoqi@0 | 1713 | // transition back to thread_in_Java |
aoqi@0 | 1714 | // return to caller |
aoqi@0 | 1715 | // |
aoqi@0 | 1716 | nmethod *SharedRuntime::generate_native_wrapper(MacroAssembler *masm, |
aoqi@0 | 1717 | methodHandle method, |
aoqi@0 | 1718 | int compile_id, |
aoqi@0 | 1719 | BasicType *in_sig_bt, |
aoqi@0 | 1720 | VMRegPair *in_regs, |
aoqi@0 | 1721 | BasicType ret_type) { |
aoqi@0 | 1722 | #ifdef COMPILER2 |
aoqi@0 | 1723 | if (method->is_method_handle_intrinsic()) { |
aoqi@0 | 1724 | vmIntrinsics::ID iid = method->intrinsic_id(); |
aoqi@0 | 1725 | intptr_t start = (intptr_t)__ pc(); |
aoqi@0 | 1726 | int vep_offset = ((intptr_t)__ pc()) - start; |
aoqi@0 | 1727 | gen_special_dispatch(masm, |
aoqi@0 | 1728 | method, |
aoqi@0 | 1729 | in_sig_bt, |
aoqi@0 | 1730 | in_regs); |
aoqi@0 | 1731 | int frame_complete = ((intptr_t)__ pc()) - start; // not complete, period |
aoqi@0 | 1732 | __ flush(); |
aoqi@0 | 1733 | int stack_slots = SharedRuntime::out_preserve_stack_slots(); // no out slots at all, actually |
aoqi@0 | 1734 | return nmethod::new_native_nmethod(method, |
aoqi@0 | 1735 | compile_id, |
aoqi@0 | 1736 | masm->code(), |
aoqi@0 | 1737 | vep_offset, |
aoqi@0 | 1738 | frame_complete, |
aoqi@0 | 1739 | stack_slots / VMRegImpl::slots_per_word, |
aoqi@0 | 1740 | in_ByteSize(-1), |
aoqi@0 | 1741 | in_ByteSize(-1), |
aoqi@0 | 1742 | (OopMapSet*)NULL); |
aoqi@0 | 1743 | } |
aoqi@0 | 1744 | |
aoqi@0 | 1745 | bool is_critical_native = true; |
aoqi@0 | 1746 | address native_func = method->critical_native_function(); |
aoqi@0 | 1747 | if (native_func == NULL) { |
aoqi@0 | 1748 | native_func = method->native_function(); |
aoqi@0 | 1749 | is_critical_native = false; |
aoqi@0 | 1750 | } |
aoqi@0 | 1751 | assert(native_func != NULL, "must have function"); |
aoqi@0 | 1752 | |
aoqi@0 | 1753 | // First, create signature for outgoing C call |
aoqi@0 | 1754 | // -------------------------------------------------------------------------- |
aoqi@0 | 1755 | |
aoqi@0 | 1756 | int total_in_args = method->size_of_parameters(); |
aoqi@0 | 1757 | // We have received a description of where all the java args are located |
aoqi@0 | 1758 | // on entry to the wrapper. We need to convert these args to where |
aoqi@0 | 1759 | // the jni function will expect them. To figure out where they go |
aoqi@0 | 1760 | // we convert the java signature to a C signature by inserting |
aoqi@0 | 1761 | // the hidden arguments as arg[0] and possibly arg[1] (static method) |
aoqi@0 | 1762 | // |
aoqi@0 | 1763 | // Additionally, on ppc64 we must convert integers to longs in the C |
aoqi@0 | 1764 | // signature. We do this in advance in order to have no trouble with |
aoqi@0 | 1765 | // indexes into the bt-arrays. |
aoqi@0 | 1766 | // So convert the signature and registers now, and adjust the total number |
aoqi@0 | 1767 | // of in-arguments accordingly. |
aoqi@0 | 1768 | int i2l_argcnt = convert_ints_to_longints_argcnt(total_in_args, in_sig_bt); // PPC64: pass ints as longs. |
aoqi@0 | 1769 | |
aoqi@0 | 1770 | // Calculate the total number of C arguments and create arrays for the |
aoqi@0 | 1771 | // signature and the outgoing registers. |
aoqi@0 | 1772 | // On ppc64, we have two arrays for the outgoing registers, because |
aoqi@0 | 1773 | // some floating-point arguments must be passed in registers _and_ |
aoqi@0 | 1774 | // in stack locations. |
aoqi@0 | 1775 | bool method_is_static = method->is_static(); |
aoqi@0 | 1776 | int total_c_args = i2l_argcnt; |
aoqi@0 | 1777 | |
aoqi@0 | 1778 | if (!is_critical_native) { |
aoqi@0 | 1779 | int n_hidden_args = method_is_static ? 2 : 1; |
aoqi@0 | 1780 | total_c_args += n_hidden_args; |
aoqi@0 | 1781 | } else { |
aoqi@0 | 1782 | // No JNIEnv*, no this*, but unpacked arrays (base+length). |
aoqi@0 | 1783 | for (int i = 0; i < total_in_args; i++) { |
aoqi@0 | 1784 | if (in_sig_bt[i] == T_ARRAY) { |
aoqi@0 | 1785 | total_c_args += 2; // PPC64: T_LONG, T_INT, T_ADDRESS (see convert_ints_to_longints and c_calling_convention) |
aoqi@0 | 1786 | } |
aoqi@0 | 1787 | } |
aoqi@0 | 1788 | } |
aoqi@0 | 1789 | |
aoqi@0 | 1790 | BasicType *out_sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_c_args); |
aoqi@0 | 1791 | VMRegPair *out_regs = NEW_RESOURCE_ARRAY(VMRegPair, total_c_args); |
aoqi@0 | 1792 | VMRegPair *out_regs2 = NEW_RESOURCE_ARRAY(VMRegPair, total_c_args); |
aoqi@0 | 1793 | BasicType* in_elem_bt = NULL; |
aoqi@0 | 1794 | |
aoqi@0 | 1795 | // Create the signature for the C call: |
aoqi@0 | 1796 | // 1) add the JNIEnv* |
aoqi@0 | 1797 | // 2) add the class if the method is static |
aoqi@0 | 1798 | // 3) copy the rest of the incoming signature (shifted by the number of |
aoqi@0 | 1799 | // hidden arguments). |
aoqi@0 | 1800 | |
aoqi@0 | 1801 | int argc = 0; |
aoqi@0 | 1802 | if (!is_critical_native) { |
aoqi@0 | 1803 | convert_ints_to_longints(i2l_argcnt, total_in_args, in_sig_bt, in_regs); // PPC64: pass ints as longs. |
aoqi@0 | 1804 | |
aoqi@0 | 1805 | out_sig_bt[argc++] = T_ADDRESS; |
aoqi@0 | 1806 | if (method->is_static()) { |
aoqi@0 | 1807 | out_sig_bt[argc++] = T_OBJECT; |
aoqi@0 | 1808 | } |
aoqi@0 | 1809 | |
aoqi@0 | 1810 | for (int i = 0; i < total_in_args ; i++ ) { |
aoqi@0 | 1811 | out_sig_bt[argc++] = in_sig_bt[i]; |
aoqi@0 | 1812 | } |
aoqi@0 | 1813 | } else { |
aoqi@0 | 1814 | Thread* THREAD = Thread::current(); |
aoqi@0 | 1815 | in_elem_bt = NEW_RESOURCE_ARRAY(BasicType, i2l_argcnt); |
aoqi@0 | 1816 | SignatureStream ss(method->signature()); |
aoqi@0 | 1817 | int o = 0; |
aoqi@0 | 1818 | for (int i = 0; i < total_in_args ; i++, o++) { |
aoqi@0 | 1819 | if (in_sig_bt[i] == T_ARRAY) { |
aoqi@0 | 1820 | // Arrays are passed as int, elem* pair |
aoqi@0 | 1821 | Symbol* atype = ss.as_symbol(CHECK_NULL); |
aoqi@0 | 1822 | const char* at = atype->as_C_string(); |
aoqi@0 | 1823 | if (strlen(at) == 2) { |
aoqi@0 | 1824 | assert(at[0] == '[', "must be"); |
aoqi@0 | 1825 | switch (at[1]) { |
aoqi@0 | 1826 | case 'B': in_elem_bt[o] = T_BYTE; break; |
aoqi@0 | 1827 | case 'C': in_elem_bt[o] = T_CHAR; break; |
aoqi@0 | 1828 | case 'D': in_elem_bt[o] = T_DOUBLE; break; |
aoqi@0 | 1829 | case 'F': in_elem_bt[o] = T_FLOAT; break; |
aoqi@0 | 1830 | case 'I': in_elem_bt[o] = T_INT; break; |
aoqi@0 | 1831 | case 'J': in_elem_bt[o] = T_LONG; break; |
aoqi@0 | 1832 | case 'S': in_elem_bt[o] = T_SHORT; break; |
aoqi@0 | 1833 | case 'Z': in_elem_bt[o] = T_BOOLEAN; break; |
aoqi@0 | 1834 | default: ShouldNotReachHere(); |
aoqi@0 | 1835 | } |
aoqi@0 | 1836 | } |
aoqi@0 | 1837 | } else { |
aoqi@0 | 1838 | in_elem_bt[o] = T_VOID; |
aoqi@0 | 1839 | switch(in_sig_bt[i]) { // PPC64: pass ints as longs. |
aoqi@0 | 1840 | case T_BOOLEAN: |
aoqi@0 | 1841 | case T_CHAR: |
aoqi@0 | 1842 | case T_BYTE: |
aoqi@0 | 1843 | case T_SHORT: |
aoqi@0 | 1844 | case T_INT: in_elem_bt[++o] = T_VOID; break; |
aoqi@0 | 1845 | default: break; |
aoqi@0 | 1846 | } |
aoqi@0 | 1847 | } |
aoqi@0 | 1848 | if (in_sig_bt[i] != T_VOID) { |
aoqi@0 | 1849 | assert(in_sig_bt[i] == ss.type(), "must match"); |
aoqi@0 | 1850 | ss.next(); |
aoqi@0 | 1851 | } |
aoqi@0 | 1852 | } |
aoqi@0 | 1853 | assert(i2l_argcnt==o, "must match"); |
aoqi@0 | 1854 | |
aoqi@0 | 1855 | convert_ints_to_longints(i2l_argcnt, total_in_args, in_sig_bt, in_regs); // PPC64: pass ints as longs. |
aoqi@0 | 1856 | |
aoqi@0 | 1857 | for (int i = 0; i < total_in_args ; i++ ) { |
aoqi@0 | 1858 | if (in_sig_bt[i] == T_ARRAY) { |
aoqi@0 | 1859 | // Arrays are passed as int, elem* pair. |
aoqi@0 | 1860 | out_sig_bt[argc++] = T_LONG; // PPC64: pass ints as longs. |
aoqi@0 | 1861 | out_sig_bt[argc++] = T_INT; |
aoqi@0 | 1862 | out_sig_bt[argc++] = T_ADDRESS; |
aoqi@0 | 1863 | } else { |
aoqi@0 | 1864 | out_sig_bt[argc++] = in_sig_bt[i]; |
aoqi@0 | 1865 | } |
aoqi@0 | 1866 | } |
aoqi@0 | 1867 | } |
aoqi@0 | 1868 | |
aoqi@0 | 1869 | |
aoqi@0 | 1870 | // Compute the wrapper's frame size. |
aoqi@0 | 1871 | // -------------------------------------------------------------------------- |
aoqi@0 | 1872 | |
aoqi@0 | 1873 | // Now figure out where the args must be stored and how much stack space |
aoqi@0 | 1874 | // they require. |
aoqi@0 | 1875 | // |
aoqi@0 | 1876 | // Compute framesize for the wrapper. We need to handlize all oops in |
aoqi@0 | 1877 | // incoming registers. |
aoqi@0 | 1878 | // |
aoqi@0 | 1879 | // Calculate the total number of stack slots we will need: |
aoqi@0 | 1880 | // 1) abi requirements |
aoqi@0 | 1881 | // 2) outgoing arguments |
aoqi@0 | 1882 | // 3) space for inbound oop handle area |
aoqi@0 | 1883 | // 4) space for handlizing a klass if static method |
aoqi@0 | 1884 | // 5) space for a lock if synchronized method |
aoqi@0 | 1885 | // 6) workspace for saving return values, int <-> float reg moves, etc. |
aoqi@0 | 1886 | // 7) alignment |
aoqi@0 | 1887 | // |
aoqi@0 | 1888 | // Layout of the native wrapper frame: |
aoqi@0 | 1889 | // (stack grows upwards, memory grows downwards) |
aoqi@0 | 1890 | // |
aoqi@0 | 1891 | // NW [ABI_REG_ARGS] <-- 1) R1_SP |
aoqi@0 | 1892 | // [outgoing arguments] <-- 2) R1_SP + out_arg_slot_offset |
aoqi@0 | 1893 | // [oopHandle area] <-- 3) R1_SP + oop_handle_offset (save area for critical natives) |
aoqi@0 | 1894 | // klass <-- 4) R1_SP + klass_offset |
aoqi@0 | 1895 | // lock <-- 5) R1_SP + lock_offset |
aoqi@0 | 1896 | // [workspace] <-- 6) R1_SP + workspace_offset |
aoqi@0 | 1897 | // [alignment] (optional) <-- 7) |
aoqi@0 | 1898 | // caller [JIT_TOP_ABI_48] <-- r_callers_sp |
aoqi@0 | 1899 | // |
aoqi@0 | 1900 | // - *_slot_offset Indicates offset from SP in number of stack slots. |
aoqi@0 | 1901 | // - *_offset Indicates offset from SP in bytes. |
aoqi@0 | 1902 | |
aoqi@0 | 1903 | int stack_slots = c_calling_convention(out_sig_bt, out_regs, out_regs2, total_c_args) // 1+2) |
aoqi@0 | 1904 | + SharedRuntime::out_preserve_stack_slots(); // See c_calling_convention. |
aoqi@0 | 1905 | |
aoqi@0 | 1906 | // Now the space for the inbound oop handle area. |
aoqi@0 | 1907 | int total_save_slots = num_java_iarg_registers * VMRegImpl::slots_per_word; |
aoqi@0 | 1908 | if (is_critical_native) { |
aoqi@0 | 1909 | // Critical natives may have to call out so they need a save area |
aoqi@0 | 1910 | // for register arguments. |
aoqi@0 | 1911 | int double_slots = 0; |
aoqi@0 | 1912 | int single_slots = 0; |
aoqi@0 | 1913 | for (int i = 0; i < total_in_args; i++) { |
aoqi@0 | 1914 | if (in_regs[i].first()->is_Register()) { |
aoqi@0 | 1915 | const Register reg = in_regs[i].first()->as_Register(); |
aoqi@0 | 1916 | switch (in_sig_bt[i]) { |
aoqi@0 | 1917 | case T_BOOLEAN: |
aoqi@0 | 1918 | case T_BYTE: |
aoqi@0 | 1919 | case T_SHORT: |
aoqi@0 | 1920 | case T_CHAR: |
aoqi@0 | 1921 | case T_INT: /*single_slots++;*/ break; // PPC64: pass ints as longs. |
aoqi@0 | 1922 | case T_ARRAY: |
aoqi@0 | 1923 | case T_LONG: double_slots++; break; |
aoqi@0 | 1924 | default: ShouldNotReachHere(); |
aoqi@0 | 1925 | } |
aoqi@0 | 1926 | } else if (in_regs[i].first()->is_FloatRegister()) { |
aoqi@0 | 1927 | switch (in_sig_bt[i]) { |
aoqi@0 | 1928 | case T_FLOAT: single_slots++; break; |
aoqi@0 | 1929 | case T_DOUBLE: double_slots++; break; |
aoqi@0 | 1930 | default: ShouldNotReachHere(); |
aoqi@0 | 1931 | } |
aoqi@0 | 1932 | } |
aoqi@0 | 1933 | } |
aoqi@0 | 1934 | total_save_slots = double_slots * 2 + round_to(single_slots, 2); // round to even |
aoqi@0 | 1935 | } |
aoqi@0 | 1936 | |
aoqi@0 | 1937 | int oop_handle_slot_offset = stack_slots; |
aoqi@0 | 1938 | stack_slots += total_save_slots; // 3) |
aoqi@0 | 1939 | |
aoqi@0 | 1940 | int klass_slot_offset = 0; |
aoqi@0 | 1941 | int klass_offset = -1; |
aoqi@0 | 1942 | if (method_is_static && !is_critical_native) { // 4) |
aoqi@0 | 1943 | klass_slot_offset = stack_slots; |
aoqi@0 | 1944 | klass_offset = klass_slot_offset * VMRegImpl::stack_slot_size; |
aoqi@0 | 1945 | stack_slots += VMRegImpl::slots_per_word; |
aoqi@0 | 1946 | } |
aoqi@0 | 1947 | |
aoqi@0 | 1948 | int lock_slot_offset = 0; |
aoqi@0 | 1949 | int lock_offset = -1; |
aoqi@0 | 1950 | if (method->is_synchronized()) { // 5) |
aoqi@0 | 1951 | lock_slot_offset = stack_slots; |
aoqi@0 | 1952 | lock_offset = lock_slot_offset * VMRegImpl::stack_slot_size; |
aoqi@0 | 1953 | stack_slots += VMRegImpl::slots_per_word; |
aoqi@0 | 1954 | } |
aoqi@0 | 1955 | |
aoqi@0 | 1956 | int workspace_slot_offset = stack_slots; // 6) |
aoqi@0 | 1957 | stack_slots += 2; |
aoqi@0 | 1958 | |
aoqi@0 | 1959 | // Now compute actual number of stack words we need. |
aoqi@0 | 1960 | // Rounding to make stack properly aligned. |
aoqi@0 | 1961 | stack_slots = round_to(stack_slots, // 7) |
aoqi@0 | 1962 | frame::alignment_in_bytes / VMRegImpl::stack_slot_size); |
aoqi@0 | 1963 | int frame_size_in_bytes = stack_slots * VMRegImpl::stack_slot_size; |
aoqi@0 | 1964 | |
aoqi@0 | 1965 | |
aoqi@0 | 1966 | // Now we can start generating code. |
aoqi@0 | 1967 | // -------------------------------------------------------------------------- |
aoqi@0 | 1968 | |
aoqi@0 | 1969 | intptr_t start_pc = (intptr_t)__ pc(); |
aoqi@0 | 1970 | intptr_t vep_start_pc; |
aoqi@0 | 1971 | intptr_t frame_done_pc; |
aoqi@0 | 1972 | intptr_t oopmap_pc; |
aoqi@0 | 1973 | |
aoqi@0 | 1974 | Label ic_miss; |
aoqi@0 | 1975 | Label handle_pending_exception; |
aoqi@0 | 1976 | |
aoqi@0 | 1977 | Register r_callers_sp = R21; |
aoqi@0 | 1978 | Register r_temp_1 = R22; |
aoqi@0 | 1979 | Register r_temp_2 = R23; |
aoqi@0 | 1980 | Register r_temp_3 = R24; |
aoqi@0 | 1981 | Register r_temp_4 = R25; |
aoqi@0 | 1982 | Register r_temp_5 = R26; |
aoqi@0 | 1983 | Register r_temp_6 = R27; |
aoqi@0 | 1984 | Register r_return_pc = R28; |
aoqi@0 | 1985 | |
aoqi@0 | 1986 | Register r_carg1_jnienv = noreg; |
aoqi@0 | 1987 | Register r_carg2_classorobject = noreg; |
aoqi@0 | 1988 | if (!is_critical_native) { |
aoqi@0 | 1989 | r_carg1_jnienv = out_regs[0].first()->as_Register(); |
aoqi@0 | 1990 | r_carg2_classorobject = out_regs[1].first()->as_Register(); |
aoqi@0 | 1991 | } |
aoqi@0 | 1992 | |
aoqi@0 | 1993 | |
aoqi@0 | 1994 | // Generate the Unverified Entry Point (UEP). |
aoqi@0 | 1995 | // -------------------------------------------------------------------------- |
aoqi@0 | 1996 | assert(start_pc == (intptr_t)__ pc(), "uep must be at start"); |
aoqi@0 | 1997 | |
aoqi@0 | 1998 | // Check ic: object class == cached class? |
aoqi@0 | 1999 | if (!method_is_static) { |
aoqi@0 | 2000 | Register ic = as_Register(Matcher::inline_cache_reg_encode()); |
aoqi@0 | 2001 | Register receiver_klass = r_temp_1; |
aoqi@0 | 2002 | |
aoqi@0 | 2003 | __ cmpdi(CCR0, R3_ARG1, 0); |
aoqi@0 | 2004 | __ beq(CCR0, ic_miss); |
aoqi@0 | 2005 | __ verify_oop(R3_ARG1); |
aoqi@0 | 2006 | __ load_klass(receiver_klass, R3_ARG1); |
aoqi@0 | 2007 | |
aoqi@0 | 2008 | __ cmpd(CCR0, receiver_klass, ic); |
aoqi@0 | 2009 | __ bne(CCR0, ic_miss); |
aoqi@0 | 2010 | } |
aoqi@0 | 2011 | |
aoqi@0 | 2012 | |
aoqi@0 | 2013 | // Generate the Verified Entry Point (VEP). |
aoqi@0 | 2014 | // -------------------------------------------------------------------------- |
aoqi@0 | 2015 | vep_start_pc = (intptr_t)__ pc(); |
aoqi@0 | 2016 | |
aoqi@0 | 2017 | __ save_LR_CR(r_temp_1); |
aoqi@0 | 2018 | __ generate_stack_overflow_check(frame_size_in_bytes); // Check before creating frame. |
aoqi@0 | 2019 | __ mr(r_callers_sp, R1_SP); // Remember frame pointer. |
aoqi@0 | 2020 | __ push_frame(frame_size_in_bytes, r_temp_1); // Push the c2n adapter's frame. |
aoqi@0 | 2021 | frame_done_pc = (intptr_t)__ pc(); |
aoqi@0 | 2022 | |
aoqi@0 | 2023 | // Native nmethod wrappers never take possesion of the oop arguments. |
aoqi@0 | 2024 | // So the caller will gc the arguments. |
aoqi@0 | 2025 | // The only thing we need an oopMap for is if the call is static. |
aoqi@0 | 2026 | // |
aoqi@0 | 2027 | // An OopMap for lock (and class if static), and one for the VM call itself. |
aoqi@0 | 2028 | OopMapSet *oop_maps = new OopMapSet(); |
aoqi@0 | 2029 | OopMap *oop_map = new OopMap(stack_slots * 2, 0 /* arg_slots*/); |
aoqi@0 | 2030 | |
aoqi@0 | 2031 | if (is_critical_native) { |
aoqi@0 | 2032 | check_needs_gc_for_critical_native(masm, stack_slots, total_in_args, oop_handle_slot_offset, oop_maps, in_regs, in_sig_bt, r_temp_1); |
aoqi@0 | 2033 | } |
aoqi@0 | 2034 | |
aoqi@0 | 2035 | // Move arguments from register/stack to register/stack. |
aoqi@0 | 2036 | // -------------------------------------------------------------------------- |
aoqi@0 | 2037 | // |
aoqi@0 | 2038 | // We immediately shuffle the arguments so that for any vm call we have |
aoqi@0 | 2039 | // to make from here on out (sync slow path, jvmti, etc.) we will have |
aoqi@0 | 2040 | // captured the oops from our caller and have a valid oopMap for them. |
aoqi@0 | 2041 | // |
aoqi@0 | 2042 | // Natives require 1 or 2 extra arguments over the normal ones: the JNIEnv* |
aoqi@0 | 2043 | // (derived from JavaThread* which is in R16_thread) and, if static, |
aoqi@0 | 2044 | // the class mirror instead of a receiver. This pretty much guarantees that |
aoqi@0 | 2045 | // register layout will not match. We ignore these extra arguments during |
aoqi@0 | 2046 | // the shuffle. The shuffle is described by the two calling convention |
aoqi@0 | 2047 | // vectors we have in our possession. We simply walk the java vector to |
aoqi@0 | 2048 | // get the source locations and the c vector to get the destinations. |
aoqi@0 | 2049 | |
aoqi@0 | 2050 | // Record sp-based slot for receiver on stack for non-static methods. |
aoqi@0 | 2051 | int receiver_offset = -1; |
aoqi@0 | 2052 | |
aoqi@0 | 2053 | // We move the arguments backward because the floating point registers |
aoqi@0 | 2054 | // destination will always be to a register with a greater or equal |
aoqi@0 | 2055 | // register number or the stack. |
aoqi@0 | 2056 | // in is the index of the incoming Java arguments |
aoqi@0 | 2057 | // out is the index of the outgoing C arguments |
aoqi@0 | 2058 | |
aoqi@0 | 2059 | #ifdef ASSERT |
aoqi@0 | 2060 | bool reg_destroyed[RegisterImpl::number_of_registers]; |
aoqi@0 | 2061 | bool freg_destroyed[FloatRegisterImpl::number_of_registers]; |
aoqi@0 | 2062 | for (int r = 0 ; r < RegisterImpl::number_of_registers ; r++) { |
aoqi@0 | 2063 | reg_destroyed[r] = false; |
aoqi@0 | 2064 | } |
aoqi@0 | 2065 | for (int f = 0 ; f < FloatRegisterImpl::number_of_registers ; f++) { |
aoqi@0 | 2066 | freg_destroyed[f] = false; |
aoqi@0 | 2067 | } |
aoqi@0 | 2068 | #endif // ASSERT |
aoqi@0 | 2069 | |
aoqi@0 | 2070 | for (int in = total_in_args - 1, out = total_c_args - 1; in >= 0 ; in--, out--) { |
aoqi@0 | 2071 | |
aoqi@0 | 2072 | #ifdef ASSERT |
aoqi@0 | 2073 | if (in_regs[in].first()->is_Register()) { |
aoqi@0 | 2074 | assert(!reg_destroyed[in_regs[in].first()->as_Register()->encoding()], "ack!"); |
aoqi@0 | 2075 | } else if (in_regs[in].first()->is_FloatRegister()) { |
aoqi@0 | 2076 | assert(!freg_destroyed[in_regs[in].first()->as_FloatRegister()->encoding()], "ack!"); |
aoqi@0 | 2077 | } |
aoqi@0 | 2078 | if (out_regs[out].first()->is_Register()) { |
aoqi@0 | 2079 | reg_destroyed[out_regs[out].first()->as_Register()->encoding()] = true; |
aoqi@0 | 2080 | } else if (out_regs[out].first()->is_FloatRegister()) { |
aoqi@0 | 2081 | freg_destroyed[out_regs[out].first()->as_FloatRegister()->encoding()] = true; |
aoqi@0 | 2082 | } |
aoqi@0 | 2083 | if (out_regs2[out].first()->is_Register()) { |
aoqi@0 | 2084 | reg_destroyed[out_regs2[out].first()->as_Register()->encoding()] = true; |
aoqi@0 | 2085 | } else if (out_regs2[out].first()->is_FloatRegister()) { |
aoqi@0 | 2086 | freg_destroyed[out_regs2[out].first()->as_FloatRegister()->encoding()] = true; |
aoqi@0 | 2087 | } |
aoqi@0 | 2088 | #endif // ASSERT |
aoqi@0 | 2089 | |
aoqi@0 | 2090 | switch (in_sig_bt[in]) { |
aoqi@0 | 2091 | case T_BOOLEAN: |
aoqi@0 | 2092 | case T_CHAR: |
aoqi@0 | 2093 | case T_BYTE: |
aoqi@0 | 2094 | case T_SHORT: |
aoqi@0 | 2095 | case T_INT: |
aoqi@0 | 2096 | guarantee(in > 0 && in_sig_bt[in-1] == T_LONG, |
aoqi@0 | 2097 | "expecting type (T_LONG,bt) for bt in {T_BOOLEAN, T_CHAR, T_BYTE, T_SHORT, T_INT}"); |
aoqi@0 | 2098 | break; |
aoqi@0 | 2099 | case T_LONG: |
aoqi@0 | 2100 | if (in_sig_bt[in+1] == T_VOID) { |
aoqi@0 | 2101 | long_move(masm, in_regs[in], out_regs[out], r_callers_sp, r_temp_1); |
aoqi@0 | 2102 | } else { |
aoqi@0 | 2103 | guarantee(in_sig_bt[in+1] == T_BOOLEAN || in_sig_bt[in+1] == T_CHAR || |
aoqi@0 | 2104 | in_sig_bt[in+1] == T_BYTE || in_sig_bt[in+1] == T_SHORT || |
aoqi@0 | 2105 | in_sig_bt[in+1] == T_INT, |
aoqi@0 | 2106 | "expecting type (T_LONG,bt) for bt in {T_BOOLEAN, T_CHAR, T_BYTE, T_SHORT, T_INT}"); |
aoqi@0 | 2107 | int_move(masm, in_regs[in], out_regs[out], r_callers_sp, r_temp_1); |
aoqi@0 | 2108 | } |
aoqi@0 | 2109 | break; |
aoqi@0 | 2110 | case T_ARRAY: |
aoqi@0 | 2111 | if (is_critical_native) { |
aoqi@0 | 2112 | int body_arg = out; |
aoqi@0 | 2113 | out -= 2; // Point to length arg. PPC64: pass ints as longs. |
aoqi@0 | 2114 | unpack_array_argument(masm, in_regs[in], in_elem_bt[in], out_regs[body_arg], out_regs[out], |
aoqi@0 | 2115 | r_callers_sp, r_temp_1, r_temp_2); |
aoqi@0 | 2116 | break; |
aoqi@0 | 2117 | } |
aoqi@0 | 2118 | case T_OBJECT: |
aoqi@0 | 2119 | assert(!is_critical_native, "no oop arguments"); |
aoqi@0 | 2120 | object_move(masm, stack_slots, |
aoqi@0 | 2121 | oop_map, oop_handle_slot_offset, |
aoqi@0 | 2122 | ((in == 0) && (!method_is_static)), &receiver_offset, |
aoqi@0 | 2123 | in_regs[in], out_regs[out], |
aoqi@0 | 2124 | r_callers_sp, r_temp_1, r_temp_2); |
aoqi@0 | 2125 | break; |
aoqi@0 | 2126 | case T_VOID: |
aoqi@0 | 2127 | break; |
aoqi@0 | 2128 | case T_FLOAT: |
aoqi@0 | 2129 | float_move(masm, in_regs[in], out_regs[out], r_callers_sp, r_temp_1); |
aoqi@0 | 2130 | if (out_regs2[out].first()->is_valid()) { |
aoqi@0 | 2131 | float_move(masm, in_regs[in], out_regs2[out], r_callers_sp, r_temp_1); |
aoqi@0 | 2132 | } |
aoqi@0 | 2133 | break; |
aoqi@0 | 2134 | case T_DOUBLE: |
aoqi@0 | 2135 | double_move(masm, in_regs[in], out_regs[out], r_callers_sp, r_temp_1); |
aoqi@0 | 2136 | if (out_regs2[out].first()->is_valid()) { |
aoqi@0 | 2137 | double_move(masm, in_regs[in], out_regs2[out], r_callers_sp, r_temp_1); |
aoqi@0 | 2138 | } |
aoqi@0 | 2139 | break; |
aoqi@0 | 2140 | case T_ADDRESS: |
aoqi@0 | 2141 | fatal("found type (T_ADDRESS) in java args"); |
aoqi@0 | 2142 | break; |
aoqi@0 | 2143 | default: |
aoqi@0 | 2144 | ShouldNotReachHere(); |
aoqi@0 | 2145 | break; |
aoqi@0 | 2146 | } |
aoqi@0 | 2147 | } |
aoqi@0 | 2148 | |
aoqi@0 | 2149 | // Pre-load a static method's oop into ARG2. |
aoqi@0 | 2150 | // Used both by locking code and the normal JNI call code. |
aoqi@0 | 2151 | if (method_is_static && !is_critical_native) { |
aoqi@0 | 2152 | __ set_oop_constant(JNIHandles::make_local(method->method_holder()->java_mirror()), |
aoqi@0 | 2153 | r_carg2_classorobject); |
aoqi@0 | 2154 | |
aoqi@0 | 2155 | // Now handlize the static class mirror in carg2. It's known not-null. |
aoqi@0 | 2156 | __ std(r_carg2_classorobject, klass_offset, R1_SP); |
aoqi@0 | 2157 | oop_map->set_oop(VMRegImpl::stack2reg(klass_slot_offset)); |
aoqi@0 | 2158 | __ addi(r_carg2_classorobject, R1_SP, klass_offset); |
aoqi@0 | 2159 | } |
aoqi@0 | 2160 | |
aoqi@0 | 2161 | // Get JNIEnv* which is first argument to native. |
aoqi@0 | 2162 | if (!is_critical_native) { |
aoqi@0 | 2163 | __ addi(r_carg1_jnienv, R16_thread, in_bytes(JavaThread::jni_environment_offset())); |
aoqi@0 | 2164 | } |
aoqi@0 | 2165 | |
aoqi@0 | 2166 | // NOTE: |
aoqi@0 | 2167 | // |
aoqi@0 | 2168 | // We have all of the arguments setup at this point. |
aoqi@0 | 2169 | // We MUST NOT touch any outgoing regs from this point on. |
aoqi@0 | 2170 | // So if we must call out we must push a new frame. |
aoqi@0 | 2171 | |
aoqi@0 | 2172 | // Get current pc for oopmap, and load it patchable relative to global toc. |
aoqi@0 | 2173 | oopmap_pc = (intptr_t) __ pc(); |
aoqi@0 | 2174 | __ calculate_address_from_global_toc(r_return_pc, (address)oopmap_pc, true, true, true, true); |
aoqi@0 | 2175 | |
aoqi@0 | 2176 | // We use the same pc/oopMap repeatedly when we call out. |
aoqi@0 | 2177 | oop_maps->add_gc_map(oopmap_pc - start_pc, oop_map); |
aoqi@0 | 2178 | |
aoqi@0 | 2179 | // r_return_pc now has the pc loaded that we will use when we finally call |
aoqi@0 | 2180 | // to native. |
aoqi@0 | 2181 | |
aoqi@0 | 2182 | // Make sure that thread is non-volatile; it crosses a bunch of VM calls below. |
aoqi@0 | 2183 | assert(R16_thread->is_nonvolatile(), "thread must be in non-volatile register"); |
aoqi@0 | 2184 | |
aoqi@0 | 2185 | |
aoqi@0 | 2186 | # if 0 |
aoqi@0 | 2187 | // DTrace method entry |
aoqi@0 | 2188 | # endif |
aoqi@0 | 2189 | |
aoqi@0 | 2190 | // Lock a synchronized method. |
aoqi@0 | 2191 | // -------------------------------------------------------------------------- |
aoqi@0 | 2192 | |
aoqi@0 | 2193 | if (method->is_synchronized()) { |
aoqi@0 | 2194 | assert(!is_critical_native, "unhandled"); |
aoqi@0 | 2195 | ConditionRegister r_flag = CCR1; |
aoqi@0 | 2196 | Register r_oop = r_temp_4; |
aoqi@0 | 2197 | const Register r_box = r_temp_5; |
aoqi@0 | 2198 | Label done, locked; |
aoqi@0 | 2199 | |
aoqi@0 | 2200 | // Load the oop for the object or class. r_carg2_classorobject contains |
aoqi@0 | 2201 | // either the handlized oop from the incoming arguments or the handlized |
aoqi@0 | 2202 | // class mirror (if the method is static). |
aoqi@0 | 2203 | __ ld(r_oop, 0, r_carg2_classorobject); |
aoqi@0 | 2204 | |
aoqi@0 | 2205 | // Get the lock box slot's address. |
aoqi@0 | 2206 | __ addi(r_box, R1_SP, lock_offset); |
aoqi@0 | 2207 | |
aoqi@0 | 2208 | # ifdef ASSERT |
aoqi@0 | 2209 | if (UseBiasedLocking) { |
aoqi@0 | 2210 | // Making the box point to itself will make it clear it went unused |
aoqi@0 | 2211 | // but also be obviously invalid. |
aoqi@0 | 2212 | __ std(r_box, 0, r_box); |
aoqi@0 | 2213 | } |
aoqi@0 | 2214 | # endif // ASSERT |
aoqi@0 | 2215 | |
aoqi@0 | 2216 | // Try fastpath for locking. |
aoqi@0 | 2217 | // fast_lock kills r_temp_1, r_temp_2, r_temp_3. |
aoqi@0 | 2218 | __ compiler_fast_lock_object(r_flag, r_oop, r_box, r_temp_1, r_temp_2, r_temp_3); |
aoqi@0 | 2219 | __ beq(r_flag, locked); |
aoqi@0 | 2220 | |
aoqi@0 | 2221 | // None of the above fast optimizations worked so we have to get into the |
aoqi@0 | 2222 | // slow case of monitor enter. Inline a special case of call_VM that |
aoqi@0 | 2223 | // disallows any pending_exception. |
aoqi@0 | 2224 | |
aoqi@0 | 2225 | // Save argument registers and leave room for C-compatible ABI_REG_ARGS. |
aoqi@0 | 2226 | int frame_size = frame::abi_reg_args_size + |
aoqi@0 | 2227 | round_to(total_c_args * wordSize, frame::alignment_in_bytes); |
aoqi@0 | 2228 | __ mr(R11_scratch1, R1_SP); |
aoqi@0 | 2229 | RegisterSaver::push_frame_and_save_argument_registers(masm, R12_scratch2, frame_size, total_c_args, out_regs, out_regs2); |
aoqi@0 | 2230 | |
aoqi@0 | 2231 | // Do the call. |
aoqi@0 | 2232 | __ set_last_Java_frame(R11_scratch1, r_return_pc); |
aoqi@0 | 2233 | assert(r_return_pc->is_nonvolatile(), "expecting return pc to be in non-volatile register"); |
aoqi@0 | 2234 | __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::complete_monitor_locking_C), r_oop, r_box, R16_thread); |
aoqi@0 | 2235 | __ reset_last_Java_frame(); |
aoqi@0 | 2236 | |
aoqi@0 | 2237 | RegisterSaver::restore_argument_registers_and_pop_frame(masm, frame_size, total_c_args, out_regs, out_regs2); |
aoqi@0 | 2238 | |
aoqi@0 | 2239 | __ asm_assert_mem8_is_zero(thread_(pending_exception), |
aoqi@0 | 2240 | "no pending exception allowed on exit from SharedRuntime::complete_monitor_locking_C", 0); |
aoqi@0 | 2241 | |
aoqi@0 | 2242 | __ bind(locked); |
aoqi@0 | 2243 | } |
aoqi@0 | 2244 | |
aoqi@0 | 2245 | |
aoqi@0 | 2246 | // Publish thread state |
aoqi@0 | 2247 | // -------------------------------------------------------------------------- |
aoqi@0 | 2248 | |
aoqi@0 | 2249 | // Use that pc we placed in r_return_pc a while back as the current frame anchor. |
aoqi@0 | 2250 | __ set_last_Java_frame(R1_SP, r_return_pc); |
aoqi@0 | 2251 | |
aoqi@0 | 2252 | // Transition from _thread_in_Java to _thread_in_native. |
aoqi@0 | 2253 | __ li(R0, _thread_in_native); |
aoqi@0 | 2254 | __ release(); |
aoqi@0 | 2255 | // TODO: PPC port assert(4 == JavaThread::sz_thread_state(), "unexpected field size"); |
aoqi@0 | 2256 | __ stw(R0, thread_(thread_state)); |
aoqi@0 | 2257 | if (UseMembar) { |
aoqi@0 | 2258 | __ fence(); |
aoqi@0 | 2259 | } |
aoqi@0 | 2260 | |
aoqi@0 | 2261 | |
aoqi@0 | 2262 | // The JNI call |
aoqi@0 | 2263 | // -------------------------------------------------------------------------- |
aoqi@0 | 2264 | #if defined(ABI_ELFv2) |
aoqi@0 | 2265 | __ call_c(native_func, relocInfo::runtime_call_type); |
aoqi@0 | 2266 | #else |
aoqi@0 | 2267 | FunctionDescriptor* fd_native_method = (FunctionDescriptor*) native_func; |
aoqi@0 | 2268 | __ call_c(fd_native_method, relocInfo::runtime_call_type); |
aoqi@0 | 2269 | #endif |
aoqi@0 | 2270 | |
aoqi@0 | 2271 | |
aoqi@0 | 2272 | // Now, we are back from the native code. |
aoqi@0 | 2273 | |
aoqi@0 | 2274 | |
aoqi@0 | 2275 | // Unpack the native result. |
aoqi@0 | 2276 | // -------------------------------------------------------------------------- |
aoqi@0 | 2277 | |
aoqi@0 | 2278 | // For int-types, we do any needed sign-extension required. |
aoqi@0 | 2279 | // Care must be taken that the return values (R3_RET and F1_RET) |
aoqi@0 | 2280 | // will survive any VM calls for blocking or unlocking. |
aoqi@0 | 2281 | // An OOP result (handle) is done specially in the slow-path code. |
aoqi@0 | 2282 | |
aoqi@0 | 2283 | switch (ret_type) { |
aoqi@0 | 2284 | case T_VOID: break; // Nothing to do! |
aoqi@0 | 2285 | case T_FLOAT: break; // Got it where we want it (unless slow-path). |
aoqi@0 | 2286 | case T_DOUBLE: break; // Got it where we want it (unless slow-path). |
aoqi@0 | 2287 | case T_LONG: break; // Got it where we want it (unless slow-path). |
aoqi@0 | 2288 | case T_OBJECT: break; // Really a handle. |
aoqi@0 | 2289 | // Cannot de-handlize until after reclaiming jvm_lock. |
aoqi@0 | 2290 | case T_ARRAY: break; |
aoqi@0 | 2291 | |
aoqi@0 | 2292 | case T_BOOLEAN: { // 0 -> false(0); !0 -> true(1) |
aoqi@0 | 2293 | Label skip_modify; |
aoqi@0 | 2294 | __ cmpwi(CCR0, R3_RET, 0); |
aoqi@0 | 2295 | __ beq(CCR0, skip_modify); |
aoqi@0 | 2296 | __ li(R3_RET, 1); |
aoqi@0 | 2297 | __ bind(skip_modify); |
aoqi@0 | 2298 | break; |
aoqi@0 | 2299 | } |
aoqi@0 | 2300 | case T_BYTE: { // sign extension |
aoqi@0 | 2301 | __ extsb(R3_RET, R3_RET); |
aoqi@0 | 2302 | break; |
aoqi@0 | 2303 | } |
aoqi@0 | 2304 | case T_CHAR: { // unsigned result |
aoqi@0 | 2305 | __ andi(R3_RET, R3_RET, 0xffff); |
aoqi@0 | 2306 | break; |
aoqi@0 | 2307 | } |
aoqi@0 | 2308 | case T_SHORT: { // sign extension |
aoqi@0 | 2309 | __ extsh(R3_RET, R3_RET); |
aoqi@0 | 2310 | break; |
aoqi@0 | 2311 | } |
aoqi@0 | 2312 | case T_INT: // nothing to do |
aoqi@0 | 2313 | break; |
aoqi@0 | 2314 | default: |
aoqi@0 | 2315 | ShouldNotReachHere(); |
aoqi@0 | 2316 | break; |
aoqi@0 | 2317 | } |
aoqi@0 | 2318 | |
aoqi@0 | 2319 | |
aoqi@0 | 2320 | // Publish thread state |
aoqi@0 | 2321 | // -------------------------------------------------------------------------- |
aoqi@0 | 2322 | |
aoqi@0 | 2323 | // Switch thread to "native transition" state before reading the |
aoqi@0 | 2324 | // synchronization state. This additional state is necessary because reading |
aoqi@0 | 2325 | // and testing the synchronization state is not atomic w.r.t. GC, as this |
aoqi@0 | 2326 | // scenario demonstrates: |
aoqi@0 | 2327 | // - Java thread A, in _thread_in_native state, loads _not_synchronized |
aoqi@0 | 2328 | // and is preempted. |
aoqi@0 | 2329 | // - VM thread changes sync state to synchronizing and suspends threads |
aoqi@0 | 2330 | // for GC. |
aoqi@0 | 2331 | // - Thread A is resumed to finish this native method, but doesn't block |
aoqi@0 | 2332 | // here since it didn't see any synchronization in progress, and escapes. |
aoqi@0 | 2333 | |
aoqi@0 | 2334 | // Transition from _thread_in_native to _thread_in_native_trans. |
aoqi@0 | 2335 | __ li(R0, _thread_in_native_trans); |
aoqi@0 | 2336 | __ release(); |
aoqi@0 | 2337 | // TODO: PPC port assert(4 == JavaThread::sz_thread_state(), "unexpected field size"); |
aoqi@0 | 2338 | __ stw(R0, thread_(thread_state)); |
aoqi@0 | 2339 | |
aoqi@0 | 2340 | |
aoqi@0 | 2341 | // Must we block? |
aoqi@0 | 2342 | // -------------------------------------------------------------------------- |
aoqi@0 | 2343 | |
aoqi@0 | 2344 | // Block, if necessary, before resuming in _thread_in_Java state. |
aoqi@0 | 2345 | // In order for GC to work, don't clear the last_Java_sp until after blocking. |
aoqi@0 | 2346 | Label after_transition; |
aoqi@0 | 2347 | { |
aoqi@0 | 2348 | Label no_block, sync; |
aoqi@0 | 2349 | |
aoqi@0 | 2350 | if (os::is_MP()) { |
aoqi@0 | 2351 | if (UseMembar) { |
aoqi@0 | 2352 | // Force this write out before the read below. |
aoqi@0 | 2353 | __ fence(); |
aoqi@0 | 2354 | } else { |
aoqi@0 | 2355 | // Write serialization page so VM thread can do a pseudo remote membar. |
aoqi@0 | 2356 | // We use the current thread pointer to calculate a thread specific |
aoqi@0 | 2357 | // offset to write to within the page. This minimizes bus traffic |
aoqi@0 | 2358 | // due to cache line collision. |
aoqi@0 | 2359 | __ serialize_memory(R16_thread, r_temp_4, r_temp_5); |
aoqi@0 | 2360 | } |
aoqi@0 | 2361 | } |
aoqi@0 | 2362 | |
aoqi@0 | 2363 | Register sync_state_addr = r_temp_4; |
aoqi@0 | 2364 | Register sync_state = r_temp_5; |
aoqi@0 | 2365 | Register suspend_flags = r_temp_6; |
aoqi@0 | 2366 | |
aoqi@0 | 2367 | __ load_const(sync_state_addr, SafepointSynchronize::address_of_state(), /*temp*/ sync_state); |
aoqi@0 | 2368 | |
aoqi@0 | 2369 | // TODO: PPC port assert(4 == SafepointSynchronize::sz_state(), "unexpected field size"); |
aoqi@0 | 2370 | __ lwz(sync_state, 0, sync_state_addr); |
aoqi@0 | 2371 | |
aoqi@0 | 2372 | // TODO: PPC port assert(4 == Thread::sz_suspend_flags(), "unexpected field size"); |
aoqi@0 | 2373 | __ lwz(suspend_flags, thread_(suspend_flags)); |
aoqi@0 | 2374 | |
aoqi@0 | 2375 | __ acquire(); |
aoqi@0 | 2376 | |
aoqi@0 | 2377 | Label do_safepoint; |
aoqi@0 | 2378 | // No synchronization in progress nor yet synchronized. |
aoqi@0 | 2379 | __ cmpwi(CCR0, sync_state, SafepointSynchronize::_not_synchronized); |
aoqi@0 | 2380 | // Not suspended. |
aoqi@0 | 2381 | __ cmpwi(CCR1, suspend_flags, 0); |
aoqi@0 | 2382 | |
aoqi@0 | 2383 | __ bne(CCR0, sync); |
aoqi@0 | 2384 | __ beq(CCR1, no_block); |
aoqi@0 | 2385 | |
aoqi@0 | 2386 | // Block. Save any potential method result value before the operation and |
aoqi@0 | 2387 | // use a leaf call to leave the last_Java_frame setup undisturbed. Doing this |
aoqi@0 | 2388 | // lets us share the oopMap we used when we went native rather than create |
aoqi@0 | 2389 | // a distinct one for this pc. |
aoqi@0 | 2390 | __ bind(sync); |
aoqi@0 | 2391 | |
aoqi@0 | 2392 | address entry_point = is_critical_native |
aoqi@0 | 2393 | ? CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans_and_transition) |
aoqi@0 | 2394 | : CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans); |
aoqi@0 | 2395 | save_native_result(masm, ret_type, workspace_slot_offset); |
aoqi@0 | 2396 | __ call_VM_leaf(entry_point, R16_thread); |
aoqi@0 | 2397 | restore_native_result(masm, ret_type, workspace_slot_offset); |
aoqi@0 | 2398 | |
aoqi@0 | 2399 | if (is_critical_native) { |
aoqi@0 | 2400 | __ b(after_transition); // No thread state transition here. |
aoqi@0 | 2401 | } |
aoqi@0 | 2402 | __ bind(no_block); |
aoqi@0 | 2403 | } |
aoqi@0 | 2404 | |
aoqi@0 | 2405 | // Publish thread state. |
aoqi@0 | 2406 | // -------------------------------------------------------------------------- |
aoqi@0 | 2407 | |
aoqi@0 | 2408 | // Thread state is thread_in_native_trans. Any safepoint blocking has |
aoqi@0 | 2409 | // already happened so we can now change state to _thread_in_Java. |
aoqi@0 | 2410 | |
aoqi@0 | 2411 | // Transition from _thread_in_native_trans to _thread_in_Java. |
aoqi@0 | 2412 | __ li(R0, _thread_in_Java); |
aoqi@0 | 2413 | __ release(); |
aoqi@0 | 2414 | // TODO: PPC port assert(4 == JavaThread::sz_thread_state(), "unexpected field size"); |
aoqi@0 | 2415 | __ stw(R0, thread_(thread_state)); |
aoqi@0 | 2416 | if (UseMembar) { |
aoqi@0 | 2417 | __ fence(); |
aoqi@0 | 2418 | } |
aoqi@0 | 2419 | __ bind(after_transition); |
aoqi@0 | 2420 | |
aoqi@0 | 2421 | // Reguard any pages if necessary. |
aoqi@0 | 2422 | // -------------------------------------------------------------------------- |
aoqi@0 | 2423 | |
aoqi@0 | 2424 | Label no_reguard; |
aoqi@0 | 2425 | __ lwz(r_temp_1, thread_(stack_guard_state)); |
aoqi@0 | 2426 | __ cmpwi(CCR0, r_temp_1, JavaThread::stack_guard_yellow_disabled); |
aoqi@0 | 2427 | __ bne(CCR0, no_reguard); |
aoqi@0 | 2428 | |
aoqi@0 | 2429 | save_native_result(masm, ret_type, workspace_slot_offset); |
aoqi@0 | 2430 | __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages)); |
aoqi@0 | 2431 | restore_native_result(masm, ret_type, workspace_slot_offset); |
aoqi@0 | 2432 | |
aoqi@0 | 2433 | __ bind(no_reguard); |
aoqi@0 | 2434 | |
aoqi@0 | 2435 | |
aoqi@0 | 2436 | // Unlock |
aoqi@0 | 2437 | // -------------------------------------------------------------------------- |
aoqi@0 | 2438 | |
aoqi@0 | 2439 | if (method->is_synchronized()) { |
aoqi@0 | 2440 | |
aoqi@0 | 2441 | ConditionRegister r_flag = CCR1; |
aoqi@0 | 2442 | const Register r_oop = r_temp_4; |
aoqi@0 | 2443 | const Register r_box = r_temp_5; |
aoqi@0 | 2444 | const Register r_exception = r_temp_6; |
aoqi@0 | 2445 | Label done; |
aoqi@0 | 2446 | |
aoqi@0 | 2447 | // Get oop and address of lock object box. |
aoqi@0 | 2448 | if (method_is_static) { |
aoqi@0 | 2449 | assert(klass_offset != -1, ""); |
aoqi@0 | 2450 | __ ld(r_oop, klass_offset, R1_SP); |
aoqi@0 | 2451 | } else { |
aoqi@0 | 2452 | assert(receiver_offset != -1, ""); |
aoqi@0 | 2453 | __ ld(r_oop, receiver_offset, R1_SP); |
aoqi@0 | 2454 | } |
aoqi@0 | 2455 | __ addi(r_box, R1_SP, lock_offset); |
aoqi@0 | 2456 | |
aoqi@0 | 2457 | // Try fastpath for unlocking. |
aoqi@0 | 2458 | __ compiler_fast_unlock_object(r_flag, r_oop, r_box, r_temp_1, r_temp_2, r_temp_3); |
aoqi@0 | 2459 | __ beq(r_flag, done); |
aoqi@0 | 2460 | |
aoqi@0 | 2461 | // Save and restore any potential method result value around the unlocking operation. |
aoqi@0 | 2462 | save_native_result(masm, ret_type, workspace_slot_offset); |
aoqi@0 | 2463 | |
aoqi@0 | 2464 | // Must save pending exception around the slow-path VM call. Since it's a |
aoqi@0 | 2465 | // leaf call, the pending exception (if any) can be kept in a register. |
aoqi@0 | 2466 | __ ld(r_exception, thread_(pending_exception)); |
aoqi@0 | 2467 | assert(r_exception->is_nonvolatile(), "exception register must be non-volatile"); |
aoqi@0 | 2468 | __ li(R0, 0); |
aoqi@0 | 2469 | __ std(R0, thread_(pending_exception)); |
aoqi@0 | 2470 | |
aoqi@0 | 2471 | // Slow case of monitor enter. |
aoqi@0 | 2472 | // Inline a special case of call_VM that disallows any pending_exception. |
aoqi@0 | 2473 | __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::complete_monitor_unlocking_C), r_oop, r_box); |
aoqi@0 | 2474 | |
aoqi@0 | 2475 | __ asm_assert_mem8_is_zero(thread_(pending_exception), |
aoqi@0 | 2476 | "no pending exception allowed on exit from SharedRuntime::complete_monitor_unlocking_C", 0); |
aoqi@0 | 2477 | |
aoqi@0 | 2478 | restore_native_result(masm, ret_type, workspace_slot_offset); |
aoqi@0 | 2479 | |
aoqi@0 | 2480 | // Check_forward_pending_exception jump to forward_exception if any pending |
aoqi@0 | 2481 | // exception is set. The forward_exception routine expects to see the |
aoqi@0 | 2482 | // exception in pending_exception and not in a register. Kind of clumsy, |
aoqi@0 | 2483 | // since all folks who branch to forward_exception must have tested |
aoqi@0 | 2484 | // pending_exception first and hence have it in a register already. |
aoqi@0 | 2485 | __ std(r_exception, thread_(pending_exception)); |
aoqi@0 | 2486 | |
aoqi@0 | 2487 | __ bind(done); |
aoqi@0 | 2488 | } |
aoqi@0 | 2489 | |
aoqi@0 | 2490 | # if 0 |
aoqi@0 | 2491 | // DTrace method exit |
aoqi@0 | 2492 | # endif |
aoqi@0 | 2493 | |
aoqi@0 | 2494 | // Clear "last Java frame" SP and PC. |
aoqi@0 | 2495 | // -------------------------------------------------------------------------- |
aoqi@0 | 2496 | |
aoqi@0 | 2497 | __ reset_last_Java_frame(); |
aoqi@0 | 2498 | |
aoqi@0 | 2499 | // Unpack oop result. |
aoqi@0 | 2500 | // -------------------------------------------------------------------------- |
aoqi@0 | 2501 | |
aoqi@0 | 2502 | if (ret_type == T_OBJECT || ret_type == T_ARRAY) { |
aoqi@0 | 2503 | Label skip_unboxing; |
aoqi@0 | 2504 | __ cmpdi(CCR0, R3_RET, 0); |
aoqi@0 | 2505 | __ beq(CCR0, skip_unboxing); |
aoqi@0 | 2506 | __ ld(R3_RET, 0, R3_RET); |
aoqi@0 | 2507 | __ bind(skip_unboxing); |
aoqi@0 | 2508 | __ verify_oop(R3_RET); |
aoqi@0 | 2509 | } |
aoqi@0 | 2510 | |
aoqi@0 | 2511 | |
aoqi@0 | 2512 | // Reset handle block. |
aoqi@0 | 2513 | // -------------------------------------------------------------------------- |
aoqi@0 | 2514 | if (!is_critical_native) { |
aoqi@0 | 2515 | __ ld(r_temp_1, thread_(active_handles)); |
aoqi@0 | 2516 | // TODO: PPC port assert(4 == JNIHandleBlock::top_size_in_bytes(), "unexpected field size"); |
aoqi@0 | 2517 | __ li(r_temp_2, 0); |
aoqi@0 | 2518 | __ stw(r_temp_2, JNIHandleBlock::top_offset_in_bytes(), r_temp_1); |
aoqi@0 | 2519 | |
aoqi@0 | 2520 | |
aoqi@0 | 2521 | // Check for pending exceptions. |
aoqi@0 | 2522 | // -------------------------------------------------------------------------- |
aoqi@0 | 2523 | __ ld(r_temp_2, thread_(pending_exception)); |
aoqi@0 | 2524 | __ cmpdi(CCR0, r_temp_2, 0); |
aoqi@0 | 2525 | __ bne(CCR0, handle_pending_exception); |
aoqi@0 | 2526 | } |
aoqi@0 | 2527 | |
aoqi@0 | 2528 | // Return |
aoqi@0 | 2529 | // -------------------------------------------------------------------------- |
aoqi@0 | 2530 | |
aoqi@0 | 2531 | __ pop_frame(); |
aoqi@0 | 2532 | __ restore_LR_CR(R11); |
aoqi@0 | 2533 | __ blr(); |
aoqi@0 | 2534 | |
aoqi@0 | 2535 | |
aoqi@0 | 2536 | // Handler for pending exceptions (out-of-line). |
aoqi@0 | 2537 | // -------------------------------------------------------------------------- |
aoqi@0 | 2538 | |
aoqi@0 | 2539 | // Since this is a native call, we know the proper exception handler |
aoqi@0 | 2540 | // is the empty function. We just pop this frame and then jump to |
aoqi@0 | 2541 | // forward_exception_entry. |
aoqi@0 | 2542 | if (!is_critical_native) { |
aoqi@0 | 2543 | __ align(InteriorEntryAlignment); |
aoqi@0 | 2544 | __ bind(handle_pending_exception); |
aoqi@0 | 2545 | |
aoqi@0 | 2546 | __ pop_frame(); |
aoqi@0 | 2547 | __ restore_LR_CR(R11); |
aoqi@0 | 2548 | __ b64_patchable((address)StubRoutines::forward_exception_entry(), |
aoqi@0 | 2549 | relocInfo::runtime_call_type); |
aoqi@0 | 2550 | } |
aoqi@0 | 2551 | |
aoqi@0 | 2552 | // Handler for a cache miss (out-of-line). |
aoqi@0 | 2553 | // -------------------------------------------------------------------------- |
aoqi@0 | 2554 | |
aoqi@0 | 2555 | if (!method_is_static) { |
aoqi@0 | 2556 | __ align(InteriorEntryAlignment); |
aoqi@0 | 2557 | __ bind(ic_miss); |
aoqi@0 | 2558 | |
aoqi@0 | 2559 | __ b64_patchable((address)SharedRuntime::get_ic_miss_stub(), |
aoqi@0 | 2560 | relocInfo::runtime_call_type); |
aoqi@0 | 2561 | } |
aoqi@0 | 2562 | |
aoqi@0 | 2563 | // Done. |
aoqi@0 | 2564 | // -------------------------------------------------------------------------- |
aoqi@0 | 2565 | |
aoqi@0 | 2566 | __ flush(); |
aoqi@0 | 2567 | |
aoqi@0 | 2568 | nmethod *nm = nmethod::new_native_nmethod(method, |
aoqi@0 | 2569 | compile_id, |
aoqi@0 | 2570 | masm->code(), |
aoqi@0 | 2571 | vep_start_pc-start_pc, |
aoqi@0 | 2572 | frame_done_pc-start_pc, |
aoqi@0 | 2573 | stack_slots / VMRegImpl::slots_per_word, |
aoqi@0 | 2574 | (method_is_static ? in_ByteSize(klass_offset) : in_ByteSize(receiver_offset)), |
aoqi@0 | 2575 | in_ByteSize(lock_offset), |
aoqi@0 | 2576 | oop_maps); |
aoqi@0 | 2577 | |
aoqi@0 | 2578 | if (is_critical_native) { |
aoqi@0 | 2579 | nm->set_lazy_critical_native(true); |
aoqi@0 | 2580 | } |
aoqi@0 | 2581 | |
aoqi@0 | 2582 | return nm; |
aoqi@0 | 2583 | #else |
aoqi@0 | 2584 | ShouldNotReachHere(); |
aoqi@0 | 2585 | return NULL; |
aoqi@0 | 2586 | #endif // COMPILER2 |
aoqi@0 | 2587 | } |
aoqi@0 | 2588 | |
aoqi@0 | 2589 | // This function returns the adjust size (in number of words) to a c2i adapter |
aoqi@0 | 2590 | // activation for use during deoptimization. |
aoqi@0 | 2591 | int Deoptimization::last_frame_adjust(int callee_parameters, int callee_locals) { |
aoqi@0 | 2592 | return round_to((callee_locals - callee_parameters) * Interpreter::stackElementWords, frame::alignment_in_bytes); |
aoqi@0 | 2593 | } |
aoqi@0 | 2594 | |
aoqi@0 | 2595 | uint SharedRuntime::out_preserve_stack_slots() { |
aoqi@0 | 2596 | #ifdef COMPILER2 |
aoqi@0 | 2597 | return frame::jit_out_preserve_size / VMRegImpl::stack_slot_size; |
aoqi@0 | 2598 | #else |
aoqi@0 | 2599 | return 0; |
aoqi@0 | 2600 | #endif |
aoqi@0 | 2601 | } |
aoqi@0 | 2602 | |
aoqi@0 | 2603 | #ifdef COMPILER2 |
aoqi@0 | 2604 | // Frame generation for deopt and uncommon trap blobs. |
aoqi@0 | 2605 | static void push_skeleton_frame(MacroAssembler* masm, bool deopt, |
aoqi@0 | 2606 | /* Read */ |
aoqi@0 | 2607 | Register unroll_block_reg, |
aoqi@0 | 2608 | /* Update */ |
aoqi@0 | 2609 | Register frame_sizes_reg, |
aoqi@0 | 2610 | Register number_of_frames_reg, |
aoqi@0 | 2611 | Register pcs_reg, |
aoqi@0 | 2612 | /* Invalidate */ |
aoqi@0 | 2613 | Register frame_size_reg, |
aoqi@0 | 2614 | Register pc_reg) { |
aoqi@0 | 2615 | |
aoqi@0 | 2616 | __ ld(pc_reg, 0, pcs_reg); |
aoqi@0 | 2617 | __ ld(frame_size_reg, 0, frame_sizes_reg); |
aoqi@0 | 2618 | __ std(pc_reg, _abi(lr), R1_SP); |
aoqi@0 | 2619 | __ push_frame(frame_size_reg, R0/*tmp*/); |
aoqi@0 | 2620 | #ifdef CC_INTERP |
aoqi@0 | 2621 | __ std(R1_SP, _parent_ijava_frame_abi(initial_caller_sp), R1_SP); |
aoqi@0 | 2622 | #else |
aoqi@0 | 2623 | #ifdef ASSERT |
aoqi@0 | 2624 | __ load_const_optimized(pc_reg, 0x5afe); |
aoqi@0 | 2625 | __ std(pc_reg, _ijava_state_neg(ijava_reserved), R1_SP); |
aoqi@0 | 2626 | #endif |
aoqi@0 | 2627 | __ std(R1_SP, _ijava_state_neg(sender_sp), R1_SP); |
aoqi@0 | 2628 | #endif // CC_INTERP |
aoqi@0 | 2629 | __ addi(number_of_frames_reg, number_of_frames_reg, -1); |
aoqi@0 | 2630 | __ addi(frame_sizes_reg, frame_sizes_reg, wordSize); |
aoqi@0 | 2631 | __ addi(pcs_reg, pcs_reg, wordSize); |
aoqi@0 | 2632 | } |
aoqi@0 | 2633 | |
aoqi@0 | 2634 | // Loop through the UnrollBlock info and create new frames. |
aoqi@0 | 2635 | static void push_skeleton_frames(MacroAssembler* masm, bool deopt, |
aoqi@0 | 2636 | /* read */ |
aoqi@0 | 2637 | Register unroll_block_reg, |
aoqi@0 | 2638 | /* invalidate */ |
aoqi@0 | 2639 | Register frame_sizes_reg, |
aoqi@0 | 2640 | Register number_of_frames_reg, |
aoqi@0 | 2641 | Register pcs_reg, |
aoqi@0 | 2642 | Register frame_size_reg, |
aoqi@0 | 2643 | Register pc_reg) { |
aoqi@0 | 2644 | Label loop; |
aoqi@0 | 2645 | |
aoqi@0 | 2646 | // _number_of_frames is of type int (deoptimization.hpp) |
aoqi@0 | 2647 | __ lwa(number_of_frames_reg, |
aoqi@0 | 2648 | Deoptimization::UnrollBlock::number_of_frames_offset_in_bytes(), |
aoqi@0 | 2649 | unroll_block_reg); |
aoqi@0 | 2650 | __ ld(pcs_reg, |
aoqi@0 | 2651 | Deoptimization::UnrollBlock::frame_pcs_offset_in_bytes(), |
aoqi@0 | 2652 | unroll_block_reg); |
aoqi@0 | 2653 | __ ld(frame_sizes_reg, |
aoqi@0 | 2654 | Deoptimization::UnrollBlock::frame_sizes_offset_in_bytes(), |
aoqi@0 | 2655 | unroll_block_reg); |
aoqi@0 | 2656 | |
aoqi@0 | 2657 | // stack: (caller_of_deoptee, ...). |
aoqi@0 | 2658 | |
aoqi@0 | 2659 | // At this point we either have an interpreter frame or a compiled |
aoqi@0 | 2660 | // frame on top of stack. If it is a compiled frame we push a new c2i |
aoqi@0 | 2661 | // adapter here |
aoqi@0 | 2662 | |
aoqi@0 | 2663 | // Memorize top-frame stack-pointer. |
aoqi@0 | 2664 | __ mr(frame_size_reg/*old_sp*/, R1_SP); |
aoqi@0 | 2665 | |
aoqi@0 | 2666 | // Resize interpreter top frame OR C2I adapter. |
aoqi@0 | 2667 | |
aoqi@0 | 2668 | // At this moment, the top frame (which is the caller of the deoptee) is |
aoqi@0 | 2669 | // an interpreter frame or a newly pushed C2I adapter or an entry frame. |
aoqi@0 | 2670 | // The top frame has a TOP_IJAVA_FRAME_ABI and the frame contains the |
aoqi@0 | 2671 | // outgoing arguments. |
aoqi@0 | 2672 | // |
aoqi@0 | 2673 | // In order to push the interpreter frame for the deoptee, we need to |
aoqi@0 | 2674 | // resize the top frame such that we are able to place the deoptee's |
aoqi@0 | 2675 | // locals in the frame. |
aoqi@0 | 2676 | // Additionally, we have to turn the top frame's TOP_IJAVA_FRAME_ABI |
aoqi@0 | 2677 | // into a valid PARENT_IJAVA_FRAME_ABI. |
aoqi@0 | 2678 | |
aoqi@0 | 2679 | __ lwa(R11_scratch1, |
aoqi@0 | 2680 | Deoptimization::UnrollBlock::caller_adjustment_offset_in_bytes(), |
aoqi@0 | 2681 | unroll_block_reg); |
aoqi@0 | 2682 | __ neg(R11_scratch1, R11_scratch1); |
aoqi@0 | 2683 | |
aoqi@0 | 2684 | // R11_scratch1 contains size of locals for frame resizing. |
aoqi@0 | 2685 | // R12_scratch2 contains top frame's lr. |
aoqi@0 | 2686 | |
aoqi@0 | 2687 | // Resize frame by complete frame size prevents TOC from being |
aoqi@0 | 2688 | // overwritten by locals. A more stack space saving way would be |
aoqi@0 | 2689 | // to copy the TOC to its location in the new abi. |
aoqi@0 | 2690 | __ addi(R11_scratch1, R11_scratch1, - frame::parent_ijava_frame_abi_size); |
aoqi@0 | 2691 | |
aoqi@0 | 2692 | // now, resize the frame |
aoqi@0 | 2693 | __ resize_frame(R11_scratch1, pc_reg/*tmp*/); |
aoqi@0 | 2694 | |
aoqi@0 | 2695 | // In the case where we have resized a c2i frame above, the optional |
aoqi@0 | 2696 | // alignment below the locals has size 32 (why?). |
aoqi@0 | 2697 | __ std(R12_scratch2, _abi(lr), R1_SP); |
aoqi@0 | 2698 | |
aoqi@0 | 2699 | // Initialize initial_caller_sp. |
aoqi@0 | 2700 | #ifdef CC_INTERP |
aoqi@0 | 2701 | __ std(frame_size_reg/*old_sp*/, _parent_ijava_frame_abi(initial_caller_sp), R1_SP); |
aoqi@0 | 2702 | #else |
aoqi@0 | 2703 | #ifdef ASSERT |
aoqi@0 | 2704 | __ load_const_optimized(pc_reg, 0x5afe); |
aoqi@0 | 2705 | __ std(pc_reg, _ijava_state_neg(ijava_reserved), R1_SP); |
aoqi@0 | 2706 | #endif |
aoqi@0 | 2707 | __ std(frame_size_reg, _ijava_state_neg(sender_sp), R1_SP); |
aoqi@0 | 2708 | #endif // CC_INTERP |
aoqi@0 | 2709 | |
aoqi@0 | 2710 | #ifdef ASSERT |
aoqi@0 | 2711 | // Make sure that there is at least one entry in the array. |
aoqi@0 | 2712 | __ cmpdi(CCR0, number_of_frames_reg, 0); |
aoqi@0 | 2713 | __ asm_assert_ne("array_size must be > 0", 0x205); |
aoqi@0 | 2714 | #endif |
aoqi@0 | 2715 | |
aoqi@0 | 2716 | // Now push the new interpreter frames. |
aoqi@0 | 2717 | // |
aoqi@0 | 2718 | __ bind(loop); |
aoqi@0 | 2719 | // Allocate a new frame, fill in the pc. |
aoqi@0 | 2720 | push_skeleton_frame(masm, deopt, |
aoqi@0 | 2721 | unroll_block_reg, |
aoqi@0 | 2722 | frame_sizes_reg, |
aoqi@0 | 2723 | number_of_frames_reg, |
aoqi@0 | 2724 | pcs_reg, |
aoqi@0 | 2725 | frame_size_reg, |
aoqi@0 | 2726 | pc_reg); |
aoqi@0 | 2727 | __ cmpdi(CCR0, number_of_frames_reg, 0); |
aoqi@0 | 2728 | __ bne(CCR0, loop); |
aoqi@0 | 2729 | |
aoqi@0 | 2730 | // Get the return address pointing into the frame manager. |
aoqi@0 | 2731 | __ ld(R0, 0, pcs_reg); |
aoqi@0 | 2732 | // Store it in the top interpreter frame. |
aoqi@0 | 2733 | __ std(R0, _abi(lr), R1_SP); |
aoqi@0 | 2734 | // Initialize frame_manager_lr of interpreter top frame. |
aoqi@0 | 2735 | #ifdef CC_INTERP |
aoqi@0 | 2736 | __ std(R0, _top_ijava_frame_abi(frame_manager_lr), R1_SP); |
aoqi@0 | 2737 | #endif |
aoqi@0 | 2738 | } |
aoqi@0 | 2739 | #endif |
aoqi@0 | 2740 | |
aoqi@0 | 2741 | void SharedRuntime::generate_deopt_blob() { |
aoqi@0 | 2742 | // Allocate space for the code |
aoqi@0 | 2743 | ResourceMark rm; |
aoqi@0 | 2744 | // Setup code generation tools |
aoqi@0 | 2745 | CodeBuffer buffer("deopt_blob", 2048, 1024); |
aoqi@0 | 2746 | InterpreterMacroAssembler* masm = new InterpreterMacroAssembler(&buffer); |
aoqi@0 | 2747 | Label exec_mode_initialized; |
aoqi@0 | 2748 | int frame_size_in_words; |
aoqi@0 | 2749 | OopMap* map = NULL; |
aoqi@0 | 2750 | OopMapSet *oop_maps = new OopMapSet(); |
aoqi@0 | 2751 | |
aoqi@0 | 2752 | // size of ABI112 plus spill slots for R3_RET and F1_RET. |
aoqi@0 | 2753 | const int frame_size_in_bytes = frame::abi_reg_args_spill_size; |
aoqi@0 | 2754 | const int frame_size_in_slots = frame_size_in_bytes / sizeof(jint); |
aoqi@0 | 2755 | int first_frame_size_in_bytes = 0; // frame size of "unpack frame" for call to fetch_unroll_info. |
aoqi@0 | 2756 | |
aoqi@0 | 2757 | const Register exec_mode_reg = R21_tmp1; |
aoqi@0 | 2758 | |
aoqi@0 | 2759 | const address start = __ pc(); |
aoqi@0 | 2760 | |
aoqi@0 | 2761 | #ifdef COMPILER2 |
aoqi@0 | 2762 | // -------------------------------------------------------------------------- |
aoqi@0 | 2763 | // Prolog for non exception case! |
aoqi@0 | 2764 | |
aoqi@0 | 2765 | // We have been called from the deopt handler of the deoptee. |
aoqi@0 | 2766 | // |
aoqi@0 | 2767 | // deoptee: |
aoqi@0 | 2768 | // ... |
aoqi@0 | 2769 | // call X |
aoqi@0 | 2770 | // ... |
aoqi@0 | 2771 | // deopt_handler: call_deopt_stub |
aoqi@0 | 2772 | // cur. return pc --> ... |
aoqi@0 | 2773 | // |
aoqi@0 | 2774 | // So currently SR_LR points behind the call in the deopt handler. |
aoqi@0 | 2775 | // We adjust it such that it points to the start of the deopt handler. |
aoqi@0 | 2776 | // The return_pc has been stored in the frame of the deoptee and |
aoqi@0 | 2777 | // will replace the address of the deopt_handler in the call |
aoqi@0 | 2778 | // to Deoptimization::fetch_unroll_info below. |
aoqi@0 | 2779 | // We can't grab a free register here, because all registers may |
aoqi@0 | 2780 | // contain live values, so let the RegisterSaver do the adjustment |
aoqi@0 | 2781 | // of the return pc. |
aoqi@0 | 2782 | const int return_pc_adjustment_no_exception = -HandlerImpl::size_deopt_handler(); |
aoqi@0 | 2783 | |
aoqi@0 | 2784 | // Push the "unpack frame" |
aoqi@0 | 2785 | // Save everything in sight. |
aoqi@0 | 2786 | map = RegisterSaver::push_frame_reg_args_and_save_live_registers(masm, |
aoqi@0 | 2787 | &first_frame_size_in_bytes, |
aoqi@0 | 2788 | /*generate_oop_map=*/ true, |
aoqi@0 | 2789 | return_pc_adjustment_no_exception, |
aoqi@0 | 2790 | RegisterSaver::return_pc_is_lr); |
aoqi@0 | 2791 | assert(map != NULL, "OopMap must have been created"); |
aoqi@0 | 2792 | |
aoqi@0 | 2793 | __ li(exec_mode_reg, Deoptimization::Unpack_deopt); |
aoqi@0 | 2794 | // Save exec mode for unpack_frames. |
aoqi@0 | 2795 | __ b(exec_mode_initialized); |
aoqi@0 | 2796 | |
aoqi@0 | 2797 | // -------------------------------------------------------------------------- |
aoqi@0 | 2798 | // Prolog for exception case |
aoqi@0 | 2799 | |
aoqi@0 | 2800 | // An exception is pending. |
aoqi@0 | 2801 | // We have been called with a return (interpreter) or a jump (exception blob). |
aoqi@0 | 2802 | // |
aoqi@0 | 2803 | // - R3_ARG1: exception oop |
aoqi@0 | 2804 | // - R4_ARG2: exception pc |
aoqi@0 | 2805 | |
aoqi@0 | 2806 | int exception_offset = __ pc() - start; |
aoqi@0 | 2807 | |
aoqi@0 | 2808 | BLOCK_COMMENT("Prolog for exception case"); |
aoqi@0 | 2809 | |
aoqi@0 | 2810 | // The RegisterSaves doesn't need to adjust the return pc for this situation. |
aoqi@0 | 2811 | const int return_pc_adjustment_exception = 0; |
aoqi@0 | 2812 | |
aoqi@0 | 2813 | // Push the "unpack frame". |
aoqi@0 | 2814 | // Save everything in sight. |
aoqi@0 | 2815 | assert(R4 == R4_ARG2, "exception pc must be in r4"); |
aoqi@0 | 2816 | RegisterSaver::push_frame_reg_args_and_save_live_registers(masm, |
aoqi@0 | 2817 | &first_frame_size_in_bytes, |
aoqi@0 | 2818 | /*generate_oop_map=*/ false, |
aoqi@0 | 2819 | return_pc_adjustment_exception, |
aoqi@0 | 2820 | RegisterSaver::return_pc_is_r4); |
aoqi@0 | 2821 | |
aoqi@0 | 2822 | // Deopt during an exception. Save exec mode for unpack_frames. |
aoqi@0 | 2823 | __ li(exec_mode_reg, Deoptimization::Unpack_exception); |
aoqi@0 | 2824 | |
aoqi@0 | 2825 | // Store exception oop and pc in thread (location known to GC). |
aoqi@0 | 2826 | // This is needed since the call to "fetch_unroll_info()" may safepoint. |
aoqi@0 | 2827 | __ std(R3_ARG1, in_bytes(JavaThread::exception_oop_offset()), R16_thread); |
aoqi@0 | 2828 | __ std(R4_ARG2, in_bytes(JavaThread::exception_pc_offset()), R16_thread); |
aoqi@0 | 2829 | |
aoqi@0 | 2830 | // fall through |
aoqi@0 | 2831 | |
aoqi@0 | 2832 | // -------------------------------------------------------------------------- |
aoqi@0 | 2833 | __ BIND(exec_mode_initialized); |
aoqi@0 | 2834 | |
aoqi@0 | 2835 | { |
aoqi@0 | 2836 | const Register unroll_block_reg = R22_tmp2; |
aoqi@0 | 2837 | |
aoqi@0 | 2838 | // We need to set `last_Java_frame' because `fetch_unroll_info' will |
aoqi@0 | 2839 | // call `last_Java_frame()'. The value of the pc in the frame is not |
aoqi@0 | 2840 | // particularly important. It just needs to identify this blob. |
aoqi@0 | 2841 | __ set_last_Java_frame(R1_SP, noreg); |
aoqi@0 | 2842 | |
aoqi@0 | 2843 | // With EscapeAnalysis turned on, this call may safepoint! |
aoqi@0 | 2844 | __ call_VM_leaf(CAST_FROM_FN_PTR(address, Deoptimization::fetch_unroll_info), R16_thread); |
aoqi@0 | 2845 | address calls_return_pc = __ last_calls_return_pc(); |
aoqi@0 | 2846 | // Set an oopmap for the call site that describes all our saved registers. |
aoqi@0 | 2847 | oop_maps->add_gc_map(calls_return_pc - start, map); |
aoqi@0 | 2848 | |
aoqi@0 | 2849 | __ reset_last_Java_frame(); |
aoqi@0 | 2850 | // Save the return value. |
aoqi@0 | 2851 | __ mr(unroll_block_reg, R3_RET); |
aoqi@0 | 2852 | |
aoqi@0 | 2853 | // Restore only the result registers that have been saved |
aoqi@0 | 2854 | // by save_volatile_registers(...). |
aoqi@0 | 2855 | RegisterSaver::restore_result_registers(masm, first_frame_size_in_bytes); |
aoqi@0 | 2856 | |
aoqi@0 | 2857 | // In excp_deopt_mode, restore and clear exception oop which we |
aoqi@0 | 2858 | // stored in the thread during exception entry above. The exception |
aoqi@0 | 2859 | // oop will be the return value of this stub. |
aoqi@0 | 2860 | Label skip_restore_excp; |
aoqi@0 | 2861 | __ cmpdi(CCR0, exec_mode_reg, Deoptimization::Unpack_exception); |
aoqi@0 | 2862 | __ bne(CCR0, skip_restore_excp); |
aoqi@0 | 2863 | __ ld(R3_RET, in_bytes(JavaThread::exception_oop_offset()), R16_thread); |
aoqi@0 | 2864 | __ ld(R4_ARG2, in_bytes(JavaThread::exception_pc_offset()), R16_thread); |
aoqi@0 | 2865 | __ li(R0, 0); |
aoqi@0 | 2866 | __ std(R0, in_bytes(JavaThread::exception_pc_offset()), R16_thread); |
aoqi@0 | 2867 | __ std(R0, in_bytes(JavaThread::exception_oop_offset()), R16_thread); |
aoqi@0 | 2868 | __ BIND(skip_restore_excp); |
aoqi@0 | 2869 | |
aoqi@0 | 2870 | // reload narrro_oop_base |
aoqi@0 | 2871 | if (UseCompressedOops && Universe::narrow_oop_base() != 0) { |
aoqi@0 | 2872 | __ load_const_optimized(R30, Universe::narrow_oop_base()); |
aoqi@0 | 2873 | } |
aoqi@0 | 2874 | |
aoqi@0 | 2875 | __ pop_frame(); |
aoqi@0 | 2876 | |
aoqi@0 | 2877 | // stack: (deoptee, optional i2c, caller of deoptee, ...). |
aoqi@0 | 2878 | |
aoqi@0 | 2879 | // pop the deoptee's frame |
aoqi@0 | 2880 | __ pop_frame(); |
aoqi@0 | 2881 | |
aoqi@0 | 2882 | // stack: (caller_of_deoptee, ...). |
aoqi@0 | 2883 | |
aoqi@0 | 2884 | // Loop through the `UnrollBlock' info and create interpreter frames. |
aoqi@0 | 2885 | push_skeleton_frames(masm, true/*deopt*/, |
aoqi@0 | 2886 | unroll_block_reg, |
aoqi@0 | 2887 | R23_tmp3, |
aoqi@0 | 2888 | R24_tmp4, |
aoqi@0 | 2889 | R25_tmp5, |
aoqi@0 | 2890 | R26_tmp6, |
aoqi@0 | 2891 | R27_tmp7); |
aoqi@0 | 2892 | |
aoqi@0 | 2893 | // stack: (skeletal interpreter frame, ..., optional skeletal |
aoqi@0 | 2894 | // interpreter frame, optional c2i, caller of deoptee, ...). |
aoqi@0 | 2895 | } |
aoqi@0 | 2896 | |
aoqi@0 | 2897 | // push an `unpack_frame' taking care of float / int return values. |
aoqi@0 | 2898 | __ push_frame(frame_size_in_bytes, R0/*tmp*/); |
aoqi@0 | 2899 | |
aoqi@0 | 2900 | // stack: (unpack frame, skeletal interpreter frame, ..., optional |
aoqi@0 | 2901 | // skeletal interpreter frame, optional c2i, caller of deoptee, |
aoqi@0 | 2902 | // ...). |
aoqi@0 | 2903 | |
aoqi@0 | 2904 | // Spill live volatile registers since we'll do a call. |
aoqi@0 | 2905 | __ std( R3_RET, _abi_reg_args_spill(spill_ret), R1_SP); |
aoqi@0 | 2906 | __ stfd(F1_RET, _abi_reg_args_spill(spill_fret), R1_SP); |
aoqi@0 | 2907 | |
aoqi@0 | 2908 | // Let the unpacker layout information in the skeletal frames just |
aoqi@0 | 2909 | // allocated. |
aoqi@0 | 2910 | __ get_PC_trash_LR(R3_RET); |
aoqi@0 | 2911 | __ set_last_Java_frame(/*sp*/R1_SP, /*pc*/R3_RET); |
aoqi@0 | 2912 | // This is a call to a LEAF method, so no oop map is required. |
aoqi@0 | 2913 | __ call_VM_leaf(CAST_FROM_FN_PTR(address, Deoptimization::unpack_frames), |
aoqi@0 | 2914 | R16_thread/*thread*/, exec_mode_reg/*exec_mode*/); |
aoqi@0 | 2915 | __ reset_last_Java_frame(); |
aoqi@0 | 2916 | |
aoqi@0 | 2917 | // Restore the volatiles saved above. |
aoqi@0 | 2918 | __ ld( R3_RET, _abi_reg_args_spill(spill_ret), R1_SP); |
aoqi@0 | 2919 | __ lfd(F1_RET, _abi_reg_args_spill(spill_fret), R1_SP); |
aoqi@0 | 2920 | |
aoqi@0 | 2921 | // Pop the unpack frame. |
aoqi@0 | 2922 | __ pop_frame(); |
aoqi@0 | 2923 | __ restore_LR_CR(R0); |
aoqi@0 | 2924 | |
aoqi@0 | 2925 | // stack: (top interpreter frame, ..., optional interpreter frame, |
aoqi@0 | 2926 | // optional c2i, caller of deoptee, ...). |
aoqi@0 | 2927 | |
aoqi@0 | 2928 | // Initialize R14_state. |
aoqi@0 | 2929 | #ifdef CC_INTERP |
aoqi@0 | 2930 | __ ld(R14_state, 0, R1_SP); |
aoqi@0 | 2931 | __ addi(R14_state, R14_state, -frame::interpreter_frame_cinterpreterstate_size_in_bytes()); |
aoqi@0 | 2932 | // Also inititialize R15_prev_state. |
aoqi@0 | 2933 | __ restore_prev_state(); |
aoqi@0 | 2934 | #else |
aoqi@0 | 2935 | __ restore_interpreter_state(R11_scratch1); |
aoqi@0 | 2936 | __ load_const_optimized(R25_templateTableBase, (address)Interpreter::dispatch_table((TosState)0), R11_scratch1); |
aoqi@0 | 2937 | #endif // CC_INTERP |
aoqi@0 | 2938 | |
aoqi@0 | 2939 | |
aoqi@0 | 2940 | // Return to the interpreter entry point. |
aoqi@0 | 2941 | __ blr(); |
aoqi@0 | 2942 | __ flush(); |
aoqi@0 | 2943 | #else // COMPILER2 |
aoqi@0 | 2944 | __ unimplemented("deopt blob needed only with compiler"); |
aoqi@0 | 2945 | int exception_offset = __ pc() - start; |
aoqi@0 | 2946 | #endif // COMPILER2 |
aoqi@0 | 2947 | |
aoqi@0 | 2948 | _deopt_blob = DeoptimizationBlob::create(&buffer, oop_maps, 0, exception_offset, 0, first_frame_size_in_bytes / wordSize); |
aoqi@0 | 2949 | } |
aoqi@0 | 2950 | |
aoqi@0 | 2951 | #ifdef COMPILER2 |
aoqi@0 | 2952 | void SharedRuntime::generate_uncommon_trap_blob() { |
aoqi@0 | 2953 | // Allocate space for the code. |
aoqi@0 | 2954 | ResourceMark rm; |
aoqi@0 | 2955 | // Setup code generation tools. |
aoqi@0 | 2956 | CodeBuffer buffer("uncommon_trap_blob", 2048, 1024); |
aoqi@0 | 2957 | InterpreterMacroAssembler* masm = new InterpreterMacroAssembler(&buffer); |
aoqi@0 | 2958 | address start = __ pc(); |
aoqi@0 | 2959 | |
aoqi@0 | 2960 | Register unroll_block_reg = R21_tmp1; |
aoqi@0 | 2961 | Register klass_index_reg = R22_tmp2; |
aoqi@0 | 2962 | Register unc_trap_reg = R23_tmp3; |
aoqi@0 | 2963 | |
aoqi@0 | 2964 | OopMapSet* oop_maps = new OopMapSet(); |
aoqi@0 | 2965 | int frame_size_in_bytes = frame::abi_reg_args_size; |
aoqi@0 | 2966 | OopMap* map = new OopMap(frame_size_in_bytes / sizeof(jint), 0); |
aoqi@0 | 2967 | |
aoqi@0 | 2968 | // stack: (deoptee, optional i2c, caller_of_deoptee, ...). |
aoqi@0 | 2969 | |
aoqi@0 | 2970 | // Push a dummy `unpack_frame' and call |
aoqi@0 | 2971 | // `Deoptimization::uncommon_trap' to pack the compiled frame into a |
aoqi@0 | 2972 | // vframe array and return the `UnrollBlock' information. |
aoqi@0 | 2973 | |
aoqi@0 | 2974 | // Save LR to compiled frame. |
aoqi@0 | 2975 | __ save_LR_CR(R11_scratch1); |
aoqi@0 | 2976 | |
aoqi@0 | 2977 | // Push an "uncommon_trap" frame. |
aoqi@0 | 2978 | __ push_frame_reg_args(0, R11_scratch1); |
aoqi@0 | 2979 | |
aoqi@0 | 2980 | // stack: (unpack frame, deoptee, optional i2c, caller_of_deoptee, ...). |
aoqi@0 | 2981 | |
aoqi@0 | 2982 | // Set the `unpack_frame' as last_Java_frame. |
aoqi@0 | 2983 | // `Deoptimization::uncommon_trap' expects it and considers its |
aoqi@0 | 2984 | // sender frame as the deoptee frame. |
aoqi@0 | 2985 | // Remember the offset of the instruction whose address will be |
aoqi@0 | 2986 | // moved to R11_scratch1. |
aoqi@0 | 2987 | address gc_map_pc = __ get_PC_trash_LR(R11_scratch1); |
aoqi@0 | 2988 | |
aoqi@0 | 2989 | __ set_last_Java_frame(/*sp*/R1_SP, /*pc*/R11_scratch1); |
aoqi@0 | 2990 | |
aoqi@0 | 2991 | __ mr(klass_index_reg, R3); |
aoqi@0 | 2992 | __ call_VM_leaf(CAST_FROM_FN_PTR(address, Deoptimization::uncommon_trap), |
aoqi@0 | 2993 | R16_thread, klass_index_reg); |
aoqi@0 | 2994 | |
aoqi@0 | 2995 | // Set an oopmap for the call site. |
aoqi@0 | 2996 | oop_maps->add_gc_map(gc_map_pc - start, map); |
aoqi@0 | 2997 | |
aoqi@0 | 2998 | __ reset_last_Java_frame(); |
aoqi@0 | 2999 | |
aoqi@0 | 3000 | // Pop the `unpack frame'. |
aoqi@0 | 3001 | __ pop_frame(); |
aoqi@0 | 3002 | |
aoqi@0 | 3003 | // stack: (deoptee, optional i2c, caller_of_deoptee, ...). |
aoqi@0 | 3004 | |
aoqi@0 | 3005 | // Save the return value. |
aoqi@0 | 3006 | __ mr(unroll_block_reg, R3_RET); |
aoqi@0 | 3007 | |
aoqi@0 | 3008 | // Pop the uncommon_trap frame. |
aoqi@0 | 3009 | __ pop_frame(); |
aoqi@0 | 3010 | |
aoqi@0 | 3011 | // stack: (caller_of_deoptee, ...). |
aoqi@0 | 3012 | |
aoqi@0 | 3013 | // Allocate new interpreter frame(s) and possibly a c2i adapter |
aoqi@0 | 3014 | // frame. |
aoqi@0 | 3015 | push_skeleton_frames(masm, false/*deopt*/, |
aoqi@0 | 3016 | unroll_block_reg, |
aoqi@0 | 3017 | R22_tmp2, |
aoqi@0 | 3018 | R23_tmp3, |
aoqi@0 | 3019 | R24_tmp4, |
aoqi@0 | 3020 | R25_tmp5, |
aoqi@0 | 3021 | R26_tmp6); |
aoqi@0 | 3022 | |
aoqi@0 | 3023 | // stack: (skeletal interpreter frame, ..., optional skeletal |
aoqi@0 | 3024 | // interpreter frame, optional c2i, caller of deoptee, ...). |
aoqi@0 | 3025 | |
aoqi@0 | 3026 | // Push a dummy `unpack_frame' taking care of float return values. |
aoqi@0 | 3027 | // Call `Deoptimization::unpack_frames' to layout information in the |
aoqi@0 | 3028 | // interpreter frames just created. |
aoqi@0 | 3029 | |
aoqi@0 | 3030 | // Push a simple "unpack frame" here. |
aoqi@0 | 3031 | __ push_frame_reg_args(0, R11_scratch1); |
aoqi@0 | 3032 | |
aoqi@0 | 3033 | // stack: (unpack frame, skeletal interpreter frame, ..., optional |
aoqi@0 | 3034 | // skeletal interpreter frame, optional c2i, caller of deoptee, |
aoqi@0 | 3035 | // ...). |
aoqi@0 | 3036 | |
aoqi@0 | 3037 | // Set the "unpack_frame" as last_Java_frame. |
aoqi@0 | 3038 | __ get_PC_trash_LR(R11_scratch1); |
aoqi@0 | 3039 | __ set_last_Java_frame(/*sp*/R1_SP, /*pc*/R11_scratch1); |
aoqi@0 | 3040 | |
aoqi@0 | 3041 | // Indicate it is the uncommon trap case. |
aoqi@0 | 3042 | __ li(unc_trap_reg, Deoptimization::Unpack_uncommon_trap); |
aoqi@0 | 3043 | // Let the unpacker layout information in the skeletal frames just |
aoqi@0 | 3044 | // allocated. |
aoqi@0 | 3045 | __ call_VM_leaf(CAST_FROM_FN_PTR(address, Deoptimization::unpack_frames), |
aoqi@0 | 3046 | R16_thread, unc_trap_reg); |
aoqi@0 | 3047 | |
aoqi@0 | 3048 | __ reset_last_Java_frame(); |
aoqi@0 | 3049 | // Pop the `unpack frame'. |
aoqi@0 | 3050 | __ pop_frame(); |
aoqi@0 | 3051 | // Restore LR from top interpreter frame. |
aoqi@0 | 3052 | __ restore_LR_CR(R11_scratch1); |
aoqi@0 | 3053 | |
aoqi@0 | 3054 | // stack: (top interpreter frame, ..., optional interpreter frame, |
aoqi@0 | 3055 | // optional c2i, caller of deoptee, ...). |
aoqi@0 | 3056 | |
aoqi@0 | 3057 | #ifdef CC_INTERP |
aoqi@0 | 3058 | // Initialize R14_state, ... |
aoqi@0 | 3059 | __ ld(R11_scratch1, 0, R1_SP); |
aoqi@0 | 3060 | __ addi(R14_state, R11_scratch1, -frame::interpreter_frame_cinterpreterstate_size_in_bytes()); |
aoqi@0 | 3061 | // also initialize R15_prev_state. |
aoqi@0 | 3062 | __ restore_prev_state(); |
aoqi@0 | 3063 | #else |
aoqi@0 | 3064 | __ restore_interpreter_state(R11_scratch1); |
aoqi@0 | 3065 | __ load_const_optimized(R25_templateTableBase, (address)Interpreter::dispatch_table((TosState)0), R11_scratch1); |
aoqi@0 | 3066 | #endif // CC_INTERP |
aoqi@0 | 3067 | |
aoqi@0 | 3068 | // Return to the interpreter entry point. |
aoqi@0 | 3069 | __ blr(); |
aoqi@0 | 3070 | |
aoqi@0 | 3071 | masm->flush(); |
aoqi@0 | 3072 | |
aoqi@0 | 3073 | _uncommon_trap_blob = UncommonTrapBlob::create(&buffer, oop_maps, frame_size_in_bytes/wordSize); |
aoqi@0 | 3074 | } |
aoqi@0 | 3075 | #endif // COMPILER2 |
aoqi@0 | 3076 | |
aoqi@0 | 3077 | // Generate a special Compile2Runtime blob that saves all registers, and setup oopmap. |
aoqi@0 | 3078 | SafepointBlob* SharedRuntime::generate_handler_blob(address call_ptr, int poll_type) { |
aoqi@0 | 3079 | assert(StubRoutines::forward_exception_entry() != NULL, |
aoqi@0 | 3080 | "must be generated before"); |
aoqi@0 | 3081 | |
aoqi@0 | 3082 | ResourceMark rm; |
aoqi@0 | 3083 | OopMapSet *oop_maps = new OopMapSet(); |
aoqi@0 | 3084 | OopMap* map; |
aoqi@0 | 3085 | |
aoqi@0 | 3086 | // Allocate space for the code. Setup code generation tools. |
aoqi@0 | 3087 | CodeBuffer buffer("handler_blob", 2048, 1024); |
aoqi@0 | 3088 | MacroAssembler* masm = new MacroAssembler(&buffer); |
aoqi@0 | 3089 | |
aoqi@0 | 3090 | address start = __ pc(); |
aoqi@0 | 3091 | int frame_size_in_bytes = 0; |
aoqi@0 | 3092 | |
aoqi@0 | 3093 | RegisterSaver::ReturnPCLocation return_pc_location; |
aoqi@0 | 3094 | bool cause_return = (poll_type == POLL_AT_RETURN); |
aoqi@0 | 3095 | if (cause_return) { |
aoqi@0 | 3096 | // Nothing to do here. The frame has already been popped in MachEpilogNode. |
aoqi@0 | 3097 | // Register LR already contains the return pc. |
aoqi@0 | 3098 | return_pc_location = RegisterSaver::return_pc_is_lr; |
aoqi@0 | 3099 | } else { |
aoqi@0 | 3100 | // Use thread()->saved_exception_pc() as return pc. |
aoqi@0 | 3101 | return_pc_location = RegisterSaver::return_pc_is_thread_saved_exception_pc; |
aoqi@0 | 3102 | } |
aoqi@0 | 3103 | |
aoqi@0 | 3104 | // Save registers, fpu state, and flags. |
aoqi@0 | 3105 | map = RegisterSaver::push_frame_reg_args_and_save_live_registers(masm, |
aoqi@0 | 3106 | &frame_size_in_bytes, |
aoqi@0 | 3107 | /*generate_oop_map=*/ true, |
aoqi@0 | 3108 | /*return_pc_adjustment=*/0, |
aoqi@0 | 3109 | return_pc_location); |
aoqi@0 | 3110 | |
aoqi@0 | 3111 | // The following is basically a call_VM. However, we need the precise |
aoqi@0 | 3112 | // address of the call in order to generate an oopmap. Hence, we do all the |
aoqi@0 | 3113 | // work outselves. |
aoqi@0 | 3114 | __ set_last_Java_frame(/*sp=*/R1_SP, /*pc=*/noreg); |
aoqi@0 | 3115 | |
aoqi@0 | 3116 | // The return address must always be correct so that the frame constructor |
aoqi@0 | 3117 | // never sees an invalid pc. |
aoqi@0 | 3118 | |
aoqi@0 | 3119 | // Do the call |
aoqi@0 | 3120 | __ call_VM_leaf(call_ptr, R16_thread); |
aoqi@0 | 3121 | address calls_return_pc = __ last_calls_return_pc(); |
aoqi@0 | 3122 | |
aoqi@0 | 3123 | // Set an oopmap for the call site. This oopmap will map all |
aoqi@0 | 3124 | // oop-registers and debug-info registers as callee-saved. This |
aoqi@0 | 3125 | // will allow deoptimization at this safepoint to find all possible |
aoqi@0 | 3126 | // debug-info recordings, as well as let GC find all oops. |
aoqi@0 | 3127 | oop_maps->add_gc_map(calls_return_pc - start, map); |
aoqi@0 | 3128 | |
aoqi@0 | 3129 | Label noException; |
aoqi@0 | 3130 | |
aoqi@0 | 3131 | // Clear the last Java frame. |
aoqi@0 | 3132 | __ reset_last_Java_frame(); |
aoqi@0 | 3133 | |
aoqi@0 | 3134 | BLOCK_COMMENT(" Check pending exception."); |
aoqi@0 | 3135 | const Register pending_exception = R0; |
aoqi@0 | 3136 | __ ld(pending_exception, thread_(pending_exception)); |
aoqi@0 | 3137 | __ cmpdi(CCR0, pending_exception, 0); |
aoqi@0 | 3138 | __ beq(CCR0, noException); |
aoqi@0 | 3139 | |
aoqi@0 | 3140 | // Exception pending |
aoqi@0 | 3141 | RegisterSaver::restore_live_registers_and_pop_frame(masm, |
aoqi@0 | 3142 | frame_size_in_bytes, |
aoqi@0 | 3143 | /*restore_ctr=*/true); |
aoqi@0 | 3144 | |
aoqi@0 | 3145 | BLOCK_COMMENT(" Jump to forward_exception_entry."); |
aoqi@0 | 3146 | // Jump to forward_exception_entry, with the issuing PC in LR |
aoqi@0 | 3147 | // so it looks like the original nmethod called forward_exception_entry. |
aoqi@0 | 3148 | __ b64_patchable(StubRoutines::forward_exception_entry(), relocInfo::runtime_call_type); |
aoqi@0 | 3149 | |
aoqi@0 | 3150 | // No exception case. |
aoqi@0 | 3151 | __ BIND(noException); |
aoqi@0 | 3152 | |
aoqi@0 | 3153 | |
aoqi@0 | 3154 | // Normal exit, restore registers and exit. |
aoqi@0 | 3155 | RegisterSaver::restore_live_registers_and_pop_frame(masm, |
aoqi@0 | 3156 | frame_size_in_bytes, |
aoqi@0 | 3157 | /*restore_ctr=*/true); |
aoqi@0 | 3158 | |
aoqi@0 | 3159 | __ blr(); |
aoqi@0 | 3160 | |
aoqi@0 | 3161 | // Make sure all code is generated |
aoqi@0 | 3162 | masm->flush(); |
aoqi@0 | 3163 | |
aoqi@0 | 3164 | // Fill-out other meta info |
aoqi@0 | 3165 | // CodeBlob frame size is in words. |
aoqi@0 | 3166 | return SafepointBlob::create(&buffer, oop_maps, frame_size_in_bytes / wordSize); |
aoqi@0 | 3167 | } |
aoqi@0 | 3168 | |
aoqi@0 | 3169 | // generate_resolve_blob - call resolution (static/virtual/opt-virtual/ic-miss) |
aoqi@0 | 3170 | // |
aoqi@0 | 3171 | // Generate a stub that calls into the vm to find out the proper destination |
aoqi@0 | 3172 | // of a java call. All the argument registers are live at this point |
aoqi@0 | 3173 | // but since this is generic code we don't know what they are and the caller |
aoqi@0 | 3174 | // must do any gc of the args. |
aoqi@0 | 3175 | // |
aoqi@0 | 3176 | RuntimeStub* SharedRuntime::generate_resolve_blob(address destination, const char* name) { |
aoqi@0 | 3177 | |
aoqi@0 | 3178 | // allocate space for the code |
aoqi@0 | 3179 | ResourceMark rm; |
aoqi@0 | 3180 | |
aoqi@0 | 3181 | CodeBuffer buffer(name, 1000, 512); |
aoqi@0 | 3182 | MacroAssembler* masm = new MacroAssembler(&buffer); |
aoqi@0 | 3183 | |
aoqi@0 | 3184 | int frame_size_in_bytes; |
aoqi@0 | 3185 | |
aoqi@0 | 3186 | OopMapSet *oop_maps = new OopMapSet(); |
aoqi@0 | 3187 | OopMap* map = NULL; |
aoqi@0 | 3188 | |
aoqi@0 | 3189 | address start = __ pc(); |
aoqi@0 | 3190 | |
aoqi@0 | 3191 | map = RegisterSaver::push_frame_reg_args_and_save_live_registers(masm, |
aoqi@0 | 3192 | &frame_size_in_bytes, |
aoqi@0 | 3193 | /*generate_oop_map*/ true, |
aoqi@0 | 3194 | /*return_pc_adjustment*/ 0, |
aoqi@0 | 3195 | RegisterSaver::return_pc_is_lr); |
aoqi@0 | 3196 | |
aoqi@0 | 3197 | // Use noreg as last_Java_pc, the return pc will be reconstructed |
aoqi@0 | 3198 | // from the physical frame. |
aoqi@0 | 3199 | __ set_last_Java_frame(/*sp*/R1_SP, noreg); |
aoqi@0 | 3200 | |
aoqi@0 | 3201 | int frame_complete = __ offset(); |
aoqi@0 | 3202 | |
aoqi@0 | 3203 | // Pass R19_method as 2nd (optional) argument, used by |
aoqi@0 | 3204 | // counter_overflow_stub. |
aoqi@0 | 3205 | __ call_VM_leaf(destination, R16_thread, R19_method); |
aoqi@0 | 3206 | address calls_return_pc = __ last_calls_return_pc(); |
aoqi@0 | 3207 | // Set an oopmap for the call site. |
aoqi@0 | 3208 | // We need this not only for callee-saved registers, but also for volatile |
aoqi@0 | 3209 | // registers that the compiler might be keeping live across a safepoint. |
aoqi@0 | 3210 | // Create the oopmap for the call's return pc. |
aoqi@0 | 3211 | oop_maps->add_gc_map(calls_return_pc - start, map); |
aoqi@0 | 3212 | |
aoqi@0 | 3213 | // R3_RET contains the address we are going to jump to assuming no exception got installed. |
aoqi@0 | 3214 | |
aoqi@0 | 3215 | // clear last_Java_sp |
aoqi@0 | 3216 | __ reset_last_Java_frame(); |
aoqi@0 | 3217 | |
aoqi@0 | 3218 | // Check for pending exceptions. |
aoqi@0 | 3219 | BLOCK_COMMENT("Check for pending exceptions."); |
aoqi@0 | 3220 | Label pending; |
aoqi@0 | 3221 | __ ld(R11_scratch1, thread_(pending_exception)); |
aoqi@0 | 3222 | __ cmpdi(CCR0, R11_scratch1, 0); |
aoqi@0 | 3223 | __ bne(CCR0, pending); |
aoqi@0 | 3224 | |
aoqi@0 | 3225 | __ mtctr(R3_RET); // Ctr will not be touched by restore_live_registers_and_pop_frame. |
aoqi@0 | 3226 | |
aoqi@0 | 3227 | RegisterSaver::restore_live_registers_and_pop_frame(masm, frame_size_in_bytes, /*restore_ctr*/ false); |
aoqi@0 | 3228 | |
aoqi@0 | 3229 | // Get the returned method. |
aoqi@0 | 3230 | __ get_vm_result_2(R19_method); |
aoqi@0 | 3231 | |
aoqi@0 | 3232 | __ bctr(); |
aoqi@0 | 3233 | |
aoqi@0 | 3234 | |
aoqi@0 | 3235 | // Pending exception after the safepoint. |
aoqi@0 | 3236 | __ BIND(pending); |
aoqi@0 | 3237 | |
aoqi@0 | 3238 | RegisterSaver::restore_live_registers_and_pop_frame(masm, frame_size_in_bytes, /*restore_ctr*/ true); |
aoqi@0 | 3239 | |
aoqi@0 | 3240 | // exception pending => remove activation and forward to exception handler |
aoqi@0 | 3241 | |
aoqi@0 | 3242 | __ li(R11_scratch1, 0); |
aoqi@0 | 3243 | __ ld(R3_ARG1, thread_(pending_exception)); |
aoqi@0 | 3244 | __ std(R11_scratch1, in_bytes(JavaThread::vm_result_offset()), R16_thread); |
aoqi@0 | 3245 | __ b64_patchable(StubRoutines::forward_exception_entry(), relocInfo::runtime_call_type); |
aoqi@0 | 3246 | |
aoqi@0 | 3247 | // ------------- |
aoqi@0 | 3248 | // Make sure all code is generated. |
aoqi@0 | 3249 | masm->flush(); |
aoqi@0 | 3250 | |
aoqi@0 | 3251 | // return the blob |
aoqi@0 | 3252 | // frame_size_words or bytes?? |
aoqi@0 | 3253 | return RuntimeStub::new_runtime_stub(name, &buffer, frame_complete, frame_size_in_bytes/wordSize, |
aoqi@0 | 3254 | oop_maps, true); |
aoqi@0 | 3255 | } |