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) 1999, 2013, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. |
aoqi@0 | 8 | * |
aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 13 | * accompanied this code). |
aoqi@0 | 14 | * |
aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 18 | * |
aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 21 | * questions. |
aoqi@0 | 22 | * |
aoqi@0 | 23 | */ |
aoqi@0 | 24 | |
aoqi@0 | 25 | #include "precompiled.hpp" |
aoqi@0 | 26 | #include "c1/c1_Defs.hpp" |
aoqi@0 | 27 | #include "c1/c1_MacroAssembler.hpp" |
aoqi@0 | 28 | #include "c1/c1_Runtime1.hpp" |
aoqi@0 | 29 | #include "interpreter/interpreter.hpp" |
aoqi@0 | 30 | #include "nativeInst_sparc.hpp" |
aoqi@0 | 31 | #include "oops/compiledICHolder.hpp" |
aoqi@0 | 32 | #include "oops/oop.inline.hpp" |
aoqi@0 | 33 | #include "prims/jvmtiExport.hpp" |
aoqi@0 | 34 | #include "register_sparc.hpp" |
aoqi@0 | 35 | #include "runtime/sharedRuntime.hpp" |
aoqi@0 | 36 | #include "runtime/signature.hpp" |
aoqi@0 | 37 | #include "runtime/vframeArray.hpp" |
aoqi@0 | 38 | #include "utilities/macros.hpp" |
aoqi@0 | 39 | #include "vmreg_sparc.inline.hpp" |
aoqi@0 | 40 | #if INCLUDE_ALL_GCS |
aoqi@0 | 41 | #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp" |
aoqi@0 | 42 | #endif |
aoqi@0 | 43 | |
aoqi@0 | 44 | // Implementation of StubAssembler |
aoqi@0 | 45 | |
aoqi@0 | 46 | int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry_point, int number_of_arguments) { |
aoqi@0 | 47 | // for sparc changing the number of arguments doesn't change |
aoqi@0 | 48 | // anything about the frame size so we'll always lie and claim that |
aoqi@0 | 49 | // we are only passing 1 argument. |
aoqi@0 | 50 | set_num_rt_args(1); |
aoqi@0 | 51 | |
aoqi@0 | 52 | assert_not_delayed(); |
aoqi@0 | 53 | // bang stack before going to runtime |
aoqi@0 | 54 | set(-os::vm_page_size() + STACK_BIAS, G3_scratch); |
aoqi@0 | 55 | st(G0, SP, G3_scratch); |
aoqi@0 | 56 | |
aoqi@0 | 57 | // debugging support |
aoqi@0 | 58 | assert(number_of_arguments >= 0 , "cannot have negative number of arguments"); |
aoqi@0 | 59 | |
aoqi@0 | 60 | set_last_Java_frame(SP, noreg); |
aoqi@0 | 61 | if (VerifyThread) mov(G2_thread, O0); // about to be smashed; pass early |
aoqi@0 | 62 | save_thread(L7_thread_cache); |
aoqi@0 | 63 | // do the call |
aoqi@0 | 64 | call(entry_point, relocInfo::runtime_call_type); |
aoqi@0 | 65 | if (!VerifyThread) { |
aoqi@0 | 66 | delayed()->mov(G2_thread, O0); // pass thread as first argument |
aoqi@0 | 67 | } else { |
aoqi@0 | 68 | delayed()->nop(); // (thread already passed) |
aoqi@0 | 69 | } |
aoqi@0 | 70 | int call_offset = offset(); // offset of return address |
aoqi@0 | 71 | restore_thread(L7_thread_cache); |
aoqi@0 | 72 | reset_last_Java_frame(); |
aoqi@0 | 73 | |
aoqi@0 | 74 | // check for pending exceptions |
aoqi@0 | 75 | { Label L; |
aoqi@0 | 76 | Address exception_addr(G2_thread, Thread::pending_exception_offset()); |
aoqi@0 | 77 | ld_ptr(exception_addr, Gtemp); |
aoqi@0 | 78 | br_null_short(Gtemp, pt, L); |
aoqi@0 | 79 | Address vm_result_addr(G2_thread, JavaThread::vm_result_offset()); |
aoqi@0 | 80 | st_ptr(G0, vm_result_addr); |
aoqi@0 | 81 | Address vm_result_addr_2(G2_thread, JavaThread::vm_result_2_offset()); |
aoqi@0 | 82 | st_ptr(G0, vm_result_addr_2); |
aoqi@0 | 83 | |
aoqi@0 | 84 | if (frame_size() == no_frame_size) { |
aoqi@0 | 85 | // we use O7 linkage so that forward_exception_entry has the issuing PC |
aoqi@0 | 86 | call(StubRoutines::forward_exception_entry(), relocInfo::runtime_call_type); |
aoqi@0 | 87 | delayed()->restore(); |
aoqi@0 | 88 | } else if (_stub_id == Runtime1::forward_exception_id) { |
aoqi@0 | 89 | should_not_reach_here(); |
aoqi@0 | 90 | } else { |
aoqi@0 | 91 | AddressLiteral exc(Runtime1::entry_for(Runtime1::forward_exception_id)); |
aoqi@0 | 92 | jump_to(exc, G4); |
aoqi@0 | 93 | delayed()->nop(); |
aoqi@0 | 94 | } |
aoqi@0 | 95 | bind(L); |
aoqi@0 | 96 | } |
aoqi@0 | 97 | |
aoqi@0 | 98 | // get oop result if there is one and reset the value in the thread |
aoqi@0 | 99 | if (oop_result1->is_valid()) { // get oop result if there is one and reset it in the thread |
aoqi@0 | 100 | get_vm_result (oop_result1); |
aoqi@0 | 101 | } else { |
aoqi@0 | 102 | // be a little paranoid and clear the result |
aoqi@0 | 103 | Address vm_result_addr(G2_thread, JavaThread::vm_result_offset()); |
aoqi@0 | 104 | st_ptr(G0, vm_result_addr); |
aoqi@0 | 105 | } |
aoqi@0 | 106 | |
aoqi@0 | 107 | // get second result if there is one and reset the value in the thread |
aoqi@0 | 108 | if (metadata_result->is_valid()) { |
aoqi@0 | 109 | get_vm_result_2 (metadata_result); |
aoqi@0 | 110 | } else { |
aoqi@0 | 111 | // be a little paranoid and clear the result |
aoqi@0 | 112 | Address vm_result_addr_2(G2_thread, JavaThread::vm_result_2_offset()); |
aoqi@0 | 113 | st_ptr(G0, vm_result_addr_2); |
aoqi@0 | 114 | } |
aoqi@0 | 115 | |
aoqi@0 | 116 | return call_offset; |
aoqi@0 | 117 | } |
aoqi@0 | 118 | |
aoqi@0 | 119 | |
aoqi@0 | 120 | int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry, Register arg1) { |
aoqi@0 | 121 | // O0 is reserved for the thread |
aoqi@0 | 122 | mov(arg1, O1); |
aoqi@0 | 123 | return call_RT(oop_result1, metadata_result, entry, 1); |
aoqi@0 | 124 | } |
aoqi@0 | 125 | |
aoqi@0 | 126 | |
aoqi@0 | 127 | int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry, Register arg1, Register arg2) { |
aoqi@0 | 128 | // O0 is reserved for the thread |
aoqi@0 | 129 | mov(arg1, O1); |
aoqi@0 | 130 | mov(arg2, O2); assert(arg2 != O1, "smashed argument"); |
aoqi@0 | 131 | return call_RT(oop_result1, metadata_result, entry, 2); |
aoqi@0 | 132 | } |
aoqi@0 | 133 | |
aoqi@0 | 134 | |
aoqi@0 | 135 | int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry, Register arg1, Register arg2, Register arg3) { |
aoqi@0 | 136 | // O0 is reserved for the thread |
aoqi@0 | 137 | mov(arg1, O1); |
aoqi@0 | 138 | mov(arg2, O2); assert(arg2 != O1, "smashed argument"); |
aoqi@0 | 139 | mov(arg3, O3); assert(arg3 != O1 && arg3 != O2, "smashed argument"); |
aoqi@0 | 140 | return call_RT(oop_result1, metadata_result, entry, 3); |
aoqi@0 | 141 | } |
aoqi@0 | 142 | |
aoqi@0 | 143 | |
aoqi@0 | 144 | // Implementation of Runtime1 |
aoqi@0 | 145 | |
aoqi@0 | 146 | #define __ sasm-> |
aoqi@0 | 147 | |
aoqi@0 | 148 | static int cpu_reg_save_offsets[FrameMap::nof_cpu_regs]; |
aoqi@0 | 149 | static int fpu_reg_save_offsets[FrameMap::nof_fpu_regs]; |
aoqi@0 | 150 | static int reg_save_size_in_words; |
aoqi@0 | 151 | static int frame_size_in_bytes = -1; |
aoqi@0 | 152 | |
aoqi@0 | 153 | static OopMap* generate_oop_map(StubAssembler* sasm, bool save_fpu_registers) { |
aoqi@0 | 154 | assert(frame_size_in_bytes == __ total_frame_size_in_bytes(reg_save_size_in_words), |
aoqi@0 | 155 | "mismatch in calculation"); |
aoqi@0 | 156 | sasm->set_frame_size(frame_size_in_bytes / BytesPerWord); |
aoqi@0 | 157 | int frame_size_in_slots = frame_size_in_bytes / sizeof(jint); |
aoqi@0 | 158 | OopMap* oop_map = new OopMap(frame_size_in_slots, 0); |
aoqi@0 | 159 | |
aoqi@0 | 160 | int i; |
aoqi@0 | 161 | for (i = 0; i < FrameMap::nof_cpu_regs; i++) { |
aoqi@0 | 162 | Register r = as_Register(i); |
aoqi@0 | 163 | if (r == G1 || r == G3 || r == G4 || r == G5) { |
aoqi@0 | 164 | int sp_offset = cpu_reg_save_offsets[i]; |
aoqi@0 | 165 | oop_map->set_callee_saved(VMRegImpl::stack2reg(sp_offset), |
aoqi@0 | 166 | r->as_VMReg()); |
aoqi@0 | 167 | } |
aoqi@0 | 168 | } |
aoqi@0 | 169 | |
aoqi@0 | 170 | if (save_fpu_registers) { |
aoqi@0 | 171 | for (i = 0; i < FrameMap::nof_fpu_regs; i++) { |
aoqi@0 | 172 | FloatRegister r = as_FloatRegister(i); |
aoqi@0 | 173 | int sp_offset = fpu_reg_save_offsets[i]; |
aoqi@0 | 174 | oop_map->set_callee_saved(VMRegImpl::stack2reg(sp_offset), |
aoqi@0 | 175 | r->as_VMReg()); |
aoqi@0 | 176 | } |
aoqi@0 | 177 | } |
aoqi@0 | 178 | return oop_map; |
aoqi@0 | 179 | } |
aoqi@0 | 180 | |
aoqi@0 | 181 | static OopMap* save_live_registers(StubAssembler* sasm, bool save_fpu_registers = true) { |
aoqi@0 | 182 | assert(frame_size_in_bytes == __ total_frame_size_in_bytes(reg_save_size_in_words), |
aoqi@0 | 183 | "mismatch in calculation"); |
aoqi@0 | 184 | __ save_frame_c1(frame_size_in_bytes); |
aoqi@0 | 185 | |
aoqi@0 | 186 | // Record volatile registers as callee-save values in an OopMap so their save locations will be |
aoqi@0 | 187 | // propagated to the caller frame's RegisterMap during StackFrameStream construction (needed for |
aoqi@0 | 188 | // deoptimization; see compiledVFrame::create_stack_value). The caller's I, L and O registers |
aoqi@0 | 189 | // are saved in register windows - I's and L's in the caller's frame and O's in the stub frame |
aoqi@0 | 190 | // (as the stub's I's) when the runtime routine called by the stub creates its frame. |
aoqi@0 | 191 | // OopMap frame sizes are in c2 stack slot sizes (sizeof(jint)) |
aoqi@0 | 192 | |
aoqi@0 | 193 | int i; |
aoqi@0 | 194 | for (i = 0; i < FrameMap::nof_cpu_regs; i++) { |
aoqi@0 | 195 | Register r = as_Register(i); |
aoqi@0 | 196 | if (r == G1 || r == G3 || r == G4 || r == G5) { |
aoqi@0 | 197 | int sp_offset = cpu_reg_save_offsets[i]; |
aoqi@0 | 198 | __ st_ptr(r, SP, (sp_offset * BytesPerWord) + STACK_BIAS); |
aoqi@0 | 199 | } |
aoqi@0 | 200 | } |
aoqi@0 | 201 | |
aoqi@0 | 202 | if (save_fpu_registers) { |
aoqi@0 | 203 | for (i = 0; i < FrameMap::nof_fpu_regs; i++) { |
aoqi@0 | 204 | FloatRegister r = as_FloatRegister(i); |
aoqi@0 | 205 | int sp_offset = fpu_reg_save_offsets[i]; |
aoqi@0 | 206 | __ stf(FloatRegisterImpl::S, r, SP, (sp_offset * BytesPerWord) + STACK_BIAS); |
aoqi@0 | 207 | } |
aoqi@0 | 208 | } |
aoqi@0 | 209 | |
aoqi@0 | 210 | return generate_oop_map(sasm, save_fpu_registers); |
aoqi@0 | 211 | } |
aoqi@0 | 212 | |
aoqi@0 | 213 | static void restore_live_registers(StubAssembler* sasm, bool restore_fpu_registers = true) { |
aoqi@0 | 214 | for (int i = 0; i < FrameMap::nof_cpu_regs; i++) { |
aoqi@0 | 215 | Register r = as_Register(i); |
aoqi@0 | 216 | if (r == G1 || r == G3 || r == G4 || r == G5) { |
aoqi@0 | 217 | __ ld_ptr(SP, (cpu_reg_save_offsets[i] * BytesPerWord) + STACK_BIAS, r); |
aoqi@0 | 218 | } |
aoqi@0 | 219 | } |
aoqi@0 | 220 | |
aoqi@0 | 221 | if (restore_fpu_registers) { |
aoqi@0 | 222 | for (int i = 0; i < FrameMap::nof_fpu_regs; i++) { |
aoqi@0 | 223 | FloatRegister r = as_FloatRegister(i); |
aoqi@0 | 224 | __ ldf(FloatRegisterImpl::S, SP, (fpu_reg_save_offsets[i] * BytesPerWord) + STACK_BIAS, r); |
aoqi@0 | 225 | } |
aoqi@0 | 226 | } |
aoqi@0 | 227 | } |
aoqi@0 | 228 | |
aoqi@0 | 229 | |
aoqi@0 | 230 | void Runtime1::initialize_pd() { |
aoqi@0 | 231 | // compute word offsets from SP at which live (non-windowed) registers are captured by stub routines |
aoqi@0 | 232 | // |
aoqi@0 | 233 | // A stub routine will have a frame that is at least large enough to hold |
aoqi@0 | 234 | // a register window save area (obviously) and the volatile g registers |
aoqi@0 | 235 | // and floating registers. A user of save_live_registers can have a frame |
aoqi@0 | 236 | // that has more scratch area in it (although typically they will use L-regs). |
aoqi@0 | 237 | // in that case the frame will look like this (stack growing down) |
aoqi@0 | 238 | // |
aoqi@0 | 239 | // FP -> | | |
aoqi@0 | 240 | // | scratch mem | |
aoqi@0 | 241 | // | " " | |
aoqi@0 | 242 | // -------------- |
aoqi@0 | 243 | // | float regs | |
aoqi@0 | 244 | // | " " | |
aoqi@0 | 245 | // --------------- |
aoqi@0 | 246 | // | G regs | |
aoqi@0 | 247 | // | " " | |
aoqi@0 | 248 | // --------------- |
aoqi@0 | 249 | // | abi reg. | |
aoqi@0 | 250 | // | window save | |
aoqi@0 | 251 | // | area | |
aoqi@0 | 252 | // SP -> --------------- |
aoqi@0 | 253 | // |
aoqi@0 | 254 | int i; |
aoqi@0 | 255 | int sp_offset = round_to(frame::register_save_words, 2); // start doubleword aligned |
aoqi@0 | 256 | |
aoqi@0 | 257 | // only G int registers are saved explicitly; others are found in register windows |
aoqi@0 | 258 | for (i = 0; i < FrameMap::nof_cpu_regs; i++) { |
aoqi@0 | 259 | Register r = as_Register(i); |
aoqi@0 | 260 | if (r == G1 || r == G3 || r == G4 || r == G5) { |
aoqi@0 | 261 | cpu_reg_save_offsets[i] = sp_offset; |
aoqi@0 | 262 | sp_offset++; |
aoqi@0 | 263 | } |
aoqi@0 | 264 | } |
aoqi@0 | 265 | |
aoqi@0 | 266 | // all float registers are saved explicitly |
aoqi@0 | 267 | assert(FrameMap::nof_fpu_regs == 32, "double registers not handled here"); |
aoqi@0 | 268 | for (i = 0; i < FrameMap::nof_fpu_regs; i++) { |
aoqi@0 | 269 | fpu_reg_save_offsets[i] = sp_offset; |
aoqi@0 | 270 | sp_offset++; |
aoqi@0 | 271 | } |
aoqi@0 | 272 | reg_save_size_in_words = sp_offset - frame::memory_parameter_word_sp_offset; |
aoqi@0 | 273 | // this should match assembler::total_frame_size_in_bytes, which |
aoqi@0 | 274 | // isn't callable from this context. It's checked by an assert when |
aoqi@0 | 275 | // it's used though. |
aoqi@0 | 276 | frame_size_in_bytes = align_size_up(sp_offset * wordSize, 8); |
aoqi@0 | 277 | } |
aoqi@0 | 278 | |
aoqi@0 | 279 | |
aoqi@0 | 280 | OopMapSet* Runtime1::generate_exception_throw(StubAssembler* sasm, address target, bool has_argument) { |
aoqi@0 | 281 | // make a frame and preserve the caller's caller-save registers |
aoqi@0 | 282 | OopMap* oop_map = save_live_registers(sasm); |
aoqi@0 | 283 | int call_offset; |
aoqi@0 | 284 | if (!has_argument) { |
aoqi@0 | 285 | call_offset = __ call_RT(noreg, noreg, target); |
aoqi@0 | 286 | } else { |
aoqi@0 | 287 | call_offset = __ call_RT(noreg, noreg, target, G4); |
aoqi@0 | 288 | } |
aoqi@0 | 289 | OopMapSet* oop_maps = new OopMapSet(); |
aoqi@0 | 290 | oop_maps->add_gc_map(call_offset, oop_map); |
aoqi@0 | 291 | |
aoqi@0 | 292 | __ should_not_reach_here(); |
aoqi@0 | 293 | return oop_maps; |
aoqi@0 | 294 | } |
aoqi@0 | 295 | |
aoqi@0 | 296 | |
aoqi@0 | 297 | OopMapSet* Runtime1::generate_stub_call(StubAssembler* sasm, Register result, address target, |
aoqi@0 | 298 | Register arg1, Register arg2, Register arg3) { |
aoqi@0 | 299 | // make a frame and preserve the caller's caller-save registers |
aoqi@0 | 300 | OopMap* oop_map = save_live_registers(sasm); |
aoqi@0 | 301 | |
aoqi@0 | 302 | int call_offset; |
aoqi@0 | 303 | if (arg1 == noreg) { |
aoqi@0 | 304 | call_offset = __ call_RT(result, noreg, target); |
aoqi@0 | 305 | } else if (arg2 == noreg) { |
aoqi@0 | 306 | call_offset = __ call_RT(result, noreg, target, arg1); |
aoqi@0 | 307 | } else if (arg3 == noreg) { |
aoqi@0 | 308 | call_offset = __ call_RT(result, noreg, target, arg1, arg2); |
aoqi@0 | 309 | } else { |
aoqi@0 | 310 | call_offset = __ call_RT(result, noreg, target, arg1, arg2, arg3); |
aoqi@0 | 311 | } |
aoqi@0 | 312 | OopMapSet* oop_maps = NULL; |
aoqi@0 | 313 | |
aoqi@0 | 314 | oop_maps = new OopMapSet(); |
aoqi@0 | 315 | oop_maps->add_gc_map(call_offset, oop_map); |
aoqi@0 | 316 | restore_live_registers(sasm); |
aoqi@0 | 317 | |
aoqi@0 | 318 | __ ret(); |
aoqi@0 | 319 | __ delayed()->restore(); |
aoqi@0 | 320 | |
aoqi@0 | 321 | return oop_maps; |
aoqi@0 | 322 | } |
aoqi@0 | 323 | |
aoqi@0 | 324 | |
aoqi@0 | 325 | OopMapSet* Runtime1::generate_patching(StubAssembler* sasm, address target) { |
aoqi@0 | 326 | // make a frame and preserve the caller's caller-save registers |
aoqi@0 | 327 | OopMap* oop_map = save_live_registers(sasm); |
aoqi@0 | 328 | |
aoqi@0 | 329 | // call the runtime patching routine, returns non-zero if nmethod got deopted. |
aoqi@0 | 330 | int call_offset = __ call_RT(noreg, noreg, target); |
aoqi@0 | 331 | OopMapSet* oop_maps = new OopMapSet(); |
aoqi@0 | 332 | oop_maps->add_gc_map(call_offset, oop_map); |
aoqi@0 | 333 | |
aoqi@0 | 334 | // re-execute the patched instruction or, if the nmethod was deoptmized, return to the |
aoqi@0 | 335 | // deoptimization handler entry that will cause re-execution of the current bytecode |
aoqi@0 | 336 | DeoptimizationBlob* deopt_blob = SharedRuntime::deopt_blob(); |
aoqi@0 | 337 | assert(deopt_blob != NULL, "deoptimization blob must have been created"); |
aoqi@0 | 338 | |
aoqi@0 | 339 | Label no_deopt; |
aoqi@0 | 340 | __ br_null_short(O0, Assembler::pt, no_deopt); |
aoqi@0 | 341 | |
aoqi@0 | 342 | // return to the deoptimization handler entry for unpacking and rexecute |
aoqi@0 | 343 | // if we simply returned the we'd deopt as if any call we patched had just |
aoqi@0 | 344 | // returned. |
aoqi@0 | 345 | |
aoqi@0 | 346 | restore_live_registers(sasm); |
aoqi@0 | 347 | |
aoqi@0 | 348 | AddressLiteral dest(deopt_blob->unpack_with_reexecution()); |
aoqi@0 | 349 | __ jump_to(dest, O0); |
aoqi@0 | 350 | __ delayed()->restore(); |
aoqi@0 | 351 | |
aoqi@0 | 352 | __ bind(no_deopt); |
aoqi@0 | 353 | restore_live_registers(sasm); |
aoqi@0 | 354 | __ ret(); |
aoqi@0 | 355 | __ delayed()->restore(); |
aoqi@0 | 356 | |
aoqi@0 | 357 | return oop_maps; |
aoqi@0 | 358 | } |
aoqi@0 | 359 | |
aoqi@0 | 360 | OopMapSet* Runtime1::generate_code_for(StubID id, StubAssembler* sasm) { |
aoqi@0 | 361 | |
aoqi@0 | 362 | OopMapSet* oop_maps = NULL; |
aoqi@0 | 363 | // for better readability |
aoqi@0 | 364 | const bool must_gc_arguments = true; |
aoqi@0 | 365 | const bool dont_gc_arguments = false; |
aoqi@0 | 366 | |
aoqi@0 | 367 | // stub code & info for the different stubs |
aoqi@0 | 368 | switch (id) { |
aoqi@0 | 369 | case forward_exception_id: |
aoqi@0 | 370 | { |
aoqi@0 | 371 | oop_maps = generate_handle_exception(id, sasm); |
aoqi@0 | 372 | } |
aoqi@0 | 373 | break; |
aoqi@0 | 374 | |
aoqi@0 | 375 | case new_instance_id: |
aoqi@0 | 376 | case fast_new_instance_id: |
aoqi@0 | 377 | case fast_new_instance_init_check_id: |
aoqi@0 | 378 | { |
aoqi@0 | 379 | Register G5_klass = G5; // Incoming |
aoqi@0 | 380 | Register O0_obj = O0; // Outgoing |
aoqi@0 | 381 | |
aoqi@0 | 382 | if (id == new_instance_id) { |
aoqi@0 | 383 | __ set_info("new_instance", dont_gc_arguments); |
aoqi@0 | 384 | } else if (id == fast_new_instance_id) { |
aoqi@0 | 385 | __ set_info("fast new_instance", dont_gc_arguments); |
aoqi@0 | 386 | } else { |
aoqi@0 | 387 | assert(id == fast_new_instance_init_check_id, "bad StubID"); |
aoqi@0 | 388 | __ set_info("fast new_instance init check", dont_gc_arguments); |
aoqi@0 | 389 | } |
aoqi@0 | 390 | |
aoqi@0 | 391 | if ((id == fast_new_instance_id || id == fast_new_instance_init_check_id) && |
aoqi@0 | 392 | UseTLAB && FastTLABRefill) { |
aoqi@0 | 393 | Label slow_path; |
aoqi@0 | 394 | Register G1_obj_size = G1; |
aoqi@0 | 395 | Register G3_t1 = G3; |
aoqi@0 | 396 | Register G4_t2 = G4; |
aoqi@0 | 397 | assert_different_registers(G5_klass, G1_obj_size, G3_t1, G4_t2); |
aoqi@0 | 398 | |
aoqi@0 | 399 | // Push a frame since we may do dtrace notification for the |
aoqi@0 | 400 | // allocation which requires calling out and we don't want |
aoqi@0 | 401 | // to stomp the real return address. |
aoqi@0 | 402 | __ save_frame(0); |
aoqi@0 | 403 | |
aoqi@0 | 404 | if (id == fast_new_instance_init_check_id) { |
aoqi@0 | 405 | // make sure the klass is initialized |
aoqi@0 | 406 | __ ldub(G5_klass, in_bytes(InstanceKlass::init_state_offset()), G3_t1); |
aoqi@0 | 407 | __ cmp(G3_t1, InstanceKlass::fully_initialized); |
aoqi@0 | 408 | __ br(Assembler::notEqual, false, Assembler::pn, slow_path); |
aoqi@0 | 409 | __ delayed()->nop(); |
aoqi@0 | 410 | } |
aoqi@0 | 411 | #ifdef ASSERT |
aoqi@0 | 412 | // assert object can be fast path allocated |
aoqi@0 | 413 | { |
aoqi@0 | 414 | Label ok, not_ok; |
aoqi@0 | 415 | __ ld(G5_klass, in_bytes(Klass::layout_helper_offset()), G1_obj_size); |
aoqi@0 | 416 | // make sure it's an instance (LH > 0) |
aoqi@0 | 417 | __ cmp_and_br_short(G1_obj_size, 0, Assembler::lessEqual, Assembler::pn, not_ok); |
aoqi@0 | 418 | __ btst(Klass::_lh_instance_slow_path_bit, G1_obj_size); |
aoqi@0 | 419 | __ br(Assembler::zero, false, Assembler::pn, ok); |
aoqi@0 | 420 | __ delayed()->nop(); |
aoqi@0 | 421 | __ bind(not_ok); |
aoqi@0 | 422 | __ stop("assert(can be fast path allocated)"); |
aoqi@0 | 423 | __ should_not_reach_here(); |
aoqi@0 | 424 | __ bind(ok); |
aoqi@0 | 425 | } |
aoqi@0 | 426 | #endif // ASSERT |
aoqi@0 | 427 | // if we got here then the TLAB allocation failed, so try |
aoqi@0 | 428 | // refilling the TLAB or allocating directly from eden. |
aoqi@0 | 429 | Label retry_tlab, try_eden; |
aoqi@0 | 430 | __ tlab_refill(retry_tlab, try_eden, slow_path); // preserves G5_klass |
aoqi@0 | 431 | |
aoqi@0 | 432 | __ bind(retry_tlab); |
aoqi@0 | 433 | |
aoqi@0 | 434 | // get the instance size |
aoqi@0 | 435 | __ ld(G5_klass, in_bytes(Klass::layout_helper_offset()), G1_obj_size); |
aoqi@0 | 436 | |
aoqi@0 | 437 | __ tlab_allocate(O0_obj, G1_obj_size, 0, G3_t1, slow_path); |
aoqi@0 | 438 | |
aoqi@0 | 439 | __ initialize_object(O0_obj, G5_klass, G1_obj_size, 0, G3_t1, G4_t2); |
aoqi@0 | 440 | __ verify_oop(O0_obj); |
aoqi@0 | 441 | __ mov(O0, I0); |
aoqi@0 | 442 | __ ret(); |
aoqi@0 | 443 | __ delayed()->restore(); |
aoqi@0 | 444 | |
aoqi@0 | 445 | __ bind(try_eden); |
aoqi@0 | 446 | // get the instance size |
aoqi@0 | 447 | __ ld(G5_klass, in_bytes(Klass::layout_helper_offset()), G1_obj_size); |
aoqi@0 | 448 | __ eden_allocate(O0_obj, G1_obj_size, 0, G3_t1, G4_t2, slow_path); |
aoqi@0 | 449 | __ incr_allocated_bytes(G1_obj_size, G3_t1, G4_t2); |
aoqi@0 | 450 | |
aoqi@0 | 451 | __ initialize_object(O0_obj, G5_klass, G1_obj_size, 0, G3_t1, G4_t2); |
aoqi@0 | 452 | __ verify_oop(O0_obj); |
aoqi@0 | 453 | __ mov(O0, I0); |
aoqi@0 | 454 | __ ret(); |
aoqi@0 | 455 | __ delayed()->restore(); |
aoqi@0 | 456 | |
aoqi@0 | 457 | __ bind(slow_path); |
aoqi@0 | 458 | |
aoqi@0 | 459 | // pop this frame so generate_stub_call can push it's own |
aoqi@0 | 460 | __ restore(); |
aoqi@0 | 461 | } |
aoqi@0 | 462 | |
aoqi@0 | 463 | oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_instance), G5_klass); |
aoqi@0 | 464 | // I0->O0: new instance |
aoqi@0 | 465 | } |
aoqi@0 | 466 | |
aoqi@0 | 467 | break; |
aoqi@0 | 468 | |
aoqi@0 | 469 | case counter_overflow_id: |
aoqi@0 | 470 | // G4 contains bci, G5 contains method |
aoqi@0 | 471 | oop_maps = generate_stub_call(sasm, noreg, CAST_FROM_FN_PTR(address, counter_overflow), G4, G5); |
aoqi@0 | 472 | break; |
aoqi@0 | 473 | |
aoqi@0 | 474 | case new_type_array_id: |
aoqi@0 | 475 | case new_object_array_id: |
aoqi@0 | 476 | { |
aoqi@0 | 477 | Register G5_klass = G5; // Incoming |
aoqi@0 | 478 | Register G4_length = G4; // Incoming |
aoqi@0 | 479 | Register O0_obj = O0; // Outgoing |
aoqi@0 | 480 | |
aoqi@0 | 481 | Address klass_lh(G5_klass, Klass::layout_helper_offset()); |
aoqi@0 | 482 | assert(Klass::_lh_header_size_shift % BitsPerByte == 0, "bytewise"); |
aoqi@0 | 483 | assert(Klass::_lh_header_size_mask == 0xFF, "bytewise"); |
aoqi@0 | 484 | // Use this offset to pick out an individual byte of the layout_helper: |
aoqi@0 | 485 | const int klass_lh_header_size_offset = ((BytesPerInt - 1) // 3 - 2 selects byte {0,1,0,0} |
aoqi@0 | 486 | - Klass::_lh_header_size_shift / BitsPerByte); |
aoqi@0 | 487 | |
aoqi@0 | 488 | if (id == new_type_array_id) { |
aoqi@0 | 489 | __ set_info("new_type_array", dont_gc_arguments); |
aoqi@0 | 490 | } else { |
aoqi@0 | 491 | __ set_info("new_object_array", dont_gc_arguments); |
aoqi@0 | 492 | } |
aoqi@0 | 493 | |
aoqi@0 | 494 | #ifdef ASSERT |
aoqi@0 | 495 | // assert object type is really an array of the proper kind |
aoqi@0 | 496 | { |
aoqi@0 | 497 | Label ok; |
aoqi@0 | 498 | Register G3_t1 = G3; |
aoqi@0 | 499 | __ ld(klass_lh, G3_t1); |
aoqi@0 | 500 | __ sra(G3_t1, Klass::_lh_array_tag_shift, G3_t1); |
aoqi@0 | 501 | int tag = ((id == new_type_array_id) |
aoqi@0 | 502 | ? Klass::_lh_array_tag_type_value |
aoqi@0 | 503 | : Klass::_lh_array_tag_obj_value); |
aoqi@0 | 504 | __ cmp_and_brx_short(G3_t1, tag, Assembler::equal, Assembler::pt, ok); |
aoqi@0 | 505 | __ stop("assert(is an array klass)"); |
aoqi@0 | 506 | __ should_not_reach_here(); |
aoqi@0 | 507 | __ bind(ok); |
aoqi@0 | 508 | } |
aoqi@0 | 509 | #endif // ASSERT |
aoqi@0 | 510 | |
aoqi@0 | 511 | if (UseTLAB && FastTLABRefill) { |
aoqi@0 | 512 | Label slow_path; |
aoqi@0 | 513 | Register G1_arr_size = G1; |
aoqi@0 | 514 | Register G3_t1 = G3; |
aoqi@0 | 515 | Register O1_t2 = O1; |
aoqi@0 | 516 | assert_different_registers(G5_klass, G4_length, G1_arr_size, G3_t1, O1_t2); |
aoqi@0 | 517 | |
aoqi@0 | 518 | // check that array length is small enough for fast path |
aoqi@0 | 519 | __ set(C1_MacroAssembler::max_array_allocation_length, G3_t1); |
aoqi@0 | 520 | __ cmp(G4_length, G3_t1); |
aoqi@0 | 521 | __ br(Assembler::greaterUnsigned, false, Assembler::pn, slow_path); |
aoqi@0 | 522 | __ delayed()->nop(); |
aoqi@0 | 523 | |
aoqi@0 | 524 | // if we got here then the TLAB allocation failed, so try |
aoqi@0 | 525 | // refilling the TLAB or allocating directly from eden. |
aoqi@0 | 526 | Label retry_tlab, try_eden; |
aoqi@0 | 527 | __ tlab_refill(retry_tlab, try_eden, slow_path); // preserves G4_length and G5_klass |
aoqi@0 | 528 | |
aoqi@0 | 529 | __ bind(retry_tlab); |
aoqi@0 | 530 | |
aoqi@0 | 531 | // get the allocation size: (length << (layout_helper & 0x1F)) + header_size |
aoqi@0 | 532 | __ ld(klass_lh, G3_t1); |
aoqi@0 | 533 | __ sll(G4_length, G3_t1, G1_arr_size); |
aoqi@0 | 534 | __ srl(G3_t1, Klass::_lh_header_size_shift, G3_t1); |
aoqi@0 | 535 | __ and3(G3_t1, Klass::_lh_header_size_mask, G3_t1); |
aoqi@0 | 536 | __ add(G1_arr_size, G3_t1, G1_arr_size); |
aoqi@0 | 537 | __ add(G1_arr_size, MinObjAlignmentInBytesMask, G1_arr_size); // align up |
aoqi@0 | 538 | __ and3(G1_arr_size, ~MinObjAlignmentInBytesMask, G1_arr_size); |
aoqi@0 | 539 | |
aoqi@0 | 540 | __ tlab_allocate(O0_obj, G1_arr_size, 0, G3_t1, slow_path); // preserves G1_arr_size |
aoqi@0 | 541 | |
aoqi@0 | 542 | __ initialize_header(O0_obj, G5_klass, G4_length, G3_t1, O1_t2); |
aoqi@0 | 543 | __ ldub(klass_lh, G3_t1, klass_lh_header_size_offset); |
aoqi@0 | 544 | __ sub(G1_arr_size, G3_t1, O1_t2); // body length |
aoqi@0 | 545 | __ add(O0_obj, G3_t1, G3_t1); // body start |
aoqi@0 | 546 | __ initialize_body(G3_t1, O1_t2); |
aoqi@0 | 547 | __ verify_oop(O0_obj); |
aoqi@0 | 548 | __ retl(); |
aoqi@0 | 549 | __ delayed()->nop(); |
aoqi@0 | 550 | |
aoqi@0 | 551 | __ bind(try_eden); |
aoqi@0 | 552 | // get the allocation size: (length << (layout_helper & 0x1F)) + header_size |
aoqi@0 | 553 | __ ld(klass_lh, G3_t1); |
aoqi@0 | 554 | __ sll(G4_length, G3_t1, G1_arr_size); |
aoqi@0 | 555 | __ srl(G3_t1, Klass::_lh_header_size_shift, G3_t1); |
aoqi@0 | 556 | __ and3(G3_t1, Klass::_lh_header_size_mask, G3_t1); |
aoqi@0 | 557 | __ add(G1_arr_size, G3_t1, G1_arr_size); |
aoqi@0 | 558 | __ add(G1_arr_size, MinObjAlignmentInBytesMask, G1_arr_size); |
aoqi@0 | 559 | __ and3(G1_arr_size, ~MinObjAlignmentInBytesMask, G1_arr_size); |
aoqi@0 | 560 | |
aoqi@0 | 561 | __ eden_allocate(O0_obj, G1_arr_size, 0, G3_t1, O1_t2, slow_path); // preserves G1_arr_size |
aoqi@0 | 562 | __ incr_allocated_bytes(G1_arr_size, G3_t1, O1_t2); |
aoqi@0 | 563 | |
aoqi@0 | 564 | __ initialize_header(O0_obj, G5_klass, G4_length, G3_t1, O1_t2); |
aoqi@0 | 565 | __ ldub(klass_lh, G3_t1, klass_lh_header_size_offset); |
aoqi@0 | 566 | __ sub(G1_arr_size, G3_t1, O1_t2); // body length |
aoqi@0 | 567 | __ add(O0_obj, G3_t1, G3_t1); // body start |
aoqi@0 | 568 | __ initialize_body(G3_t1, O1_t2); |
aoqi@0 | 569 | __ verify_oop(O0_obj); |
aoqi@0 | 570 | __ retl(); |
aoqi@0 | 571 | __ delayed()->nop(); |
aoqi@0 | 572 | |
aoqi@0 | 573 | __ bind(slow_path); |
aoqi@0 | 574 | } |
aoqi@0 | 575 | |
aoqi@0 | 576 | if (id == new_type_array_id) { |
aoqi@0 | 577 | oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_type_array), G5_klass, G4_length); |
aoqi@0 | 578 | } else { |
aoqi@0 | 579 | oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_object_array), G5_klass, G4_length); |
aoqi@0 | 580 | } |
aoqi@0 | 581 | // I0 -> O0: new array |
aoqi@0 | 582 | } |
aoqi@0 | 583 | break; |
aoqi@0 | 584 | |
aoqi@0 | 585 | case new_multi_array_id: |
aoqi@0 | 586 | { // O0: klass |
aoqi@0 | 587 | // O1: rank |
aoqi@0 | 588 | // O2: address of 1st dimension |
aoqi@0 | 589 | __ set_info("new_multi_array", dont_gc_arguments); |
aoqi@0 | 590 | oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_multi_array), I0, I1, I2); |
aoqi@0 | 591 | // I0 -> O0: new multi array |
aoqi@0 | 592 | } |
aoqi@0 | 593 | break; |
aoqi@0 | 594 | |
aoqi@0 | 595 | case register_finalizer_id: |
aoqi@0 | 596 | { |
aoqi@0 | 597 | __ set_info("register_finalizer", dont_gc_arguments); |
aoqi@0 | 598 | |
aoqi@0 | 599 | // load the klass and check the has finalizer flag |
aoqi@0 | 600 | Label register_finalizer; |
aoqi@0 | 601 | Register t = O1; |
aoqi@0 | 602 | __ load_klass(O0, t); |
aoqi@0 | 603 | __ ld(t, in_bytes(Klass::access_flags_offset()), t); |
aoqi@0 | 604 | __ set(JVM_ACC_HAS_FINALIZER, G3); |
aoqi@0 | 605 | __ andcc(G3, t, G0); |
aoqi@0 | 606 | __ br(Assembler::notZero, false, Assembler::pt, register_finalizer); |
aoqi@0 | 607 | __ delayed()->nop(); |
aoqi@0 | 608 | |
aoqi@0 | 609 | // do a leaf return |
aoqi@0 | 610 | __ retl(); |
aoqi@0 | 611 | __ delayed()->nop(); |
aoqi@0 | 612 | |
aoqi@0 | 613 | __ bind(register_finalizer); |
aoqi@0 | 614 | OopMap* oop_map = save_live_registers(sasm); |
aoqi@0 | 615 | int call_offset = __ call_RT(noreg, noreg, |
aoqi@0 | 616 | CAST_FROM_FN_PTR(address, SharedRuntime::register_finalizer), I0); |
aoqi@0 | 617 | oop_maps = new OopMapSet(); |
aoqi@0 | 618 | oop_maps->add_gc_map(call_offset, oop_map); |
aoqi@0 | 619 | |
aoqi@0 | 620 | // Now restore all the live registers |
aoqi@0 | 621 | restore_live_registers(sasm); |
aoqi@0 | 622 | |
aoqi@0 | 623 | __ ret(); |
aoqi@0 | 624 | __ delayed()->restore(); |
aoqi@0 | 625 | } |
aoqi@0 | 626 | break; |
aoqi@0 | 627 | |
aoqi@0 | 628 | case throw_range_check_failed_id: |
aoqi@0 | 629 | { __ set_info("range_check_failed", dont_gc_arguments); // arguments will be discarded |
aoqi@0 | 630 | // G4: index |
aoqi@0 | 631 | oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_range_check_exception), true); |
aoqi@0 | 632 | } |
aoqi@0 | 633 | break; |
aoqi@0 | 634 | |
aoqi@0 | 635 | case throw_index_exception_id: |
aoqi@0 | 636 | { __ set_info("index_range_check_failed", dont_gc_arguments); // arguments will be discarded |
aoqi@0 | 637 | // G4: index |
aoqi@0 | 638 | oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_index_exception), true); |
aoqi@0 | 639 | } |
aoqi@0 | 640 | break; |
aoqi@0 | 641 | |
aoqi@0 | 642 | case throw_div0_exception_id: |
aoqi@0 | 643 | { __ set_info("throw_div0_exception", dont_gc_arguments); |
aoqi@0 | 644 | oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_div0_exception), false); |
aoqi@0 | 645 | } |
aoqi@0 | 646 | break; |
aoqi@0 | 647 | |
aoqi@0 | 648 | case throw_null_pointer_exception_id: |
aoqi@0 | 649 | { __ set_info("throw_null_pointer_exception", dont_gc_arguments); |
aoqi@0 | 650 | oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_null_pointer_exception), false); |
aoqi@0 | 651 | } |
aoqi@0 | 652 | break; |
aoqi@0 | 653 | |
aoqi@0 | 654 | case handle_exception_id: |
aoqi@0 | 655 | { __ set_info("handle_exception", dont_gc_arguments); |
aoqi@0 | 656 | oop_maps = generate_handle_exception(id, sasm); |
aoqi@0 | 657 | } |
aoqi@0 | 658 | break; |
aoqi@0 | 659 | |
aoqi@0 | 660 | case handle_exception_from_callee_id: |
aoqi@0 | 661 | { __ set_info("handle_exception_from_callee", dont_gc_arguments); |
aoqi@0 | 662 | oop_maps = generate_handle_exception(id, sasm); |
aoqi@0 | 663 | } |
aoqi@0 | 664 | break; |
aoqi@0 | 665 | |
aoqi@0 | 666 | case unwind_exception_id: |
aoqi@0 | 667 | { |
aoqi@0 | 668 | // O0: exception |
aoqi@0 | 669 | // I7: address of call to this method |
aoqi@0 | 670 | |
aoqi@0 | 671 | __ set_info("unwind_exception", dont_gc_arguments); |
aoqi@0 | 672 | __ mov(Oexception, Oexception->after_save()); |
aoqi@0 | 673 | __ add(I7, frame::pc_return_offset, Oissuing_pc->after_save()); |
aoqi@0 | 674 | |
aoqi@0 | 675 | __ call_VM_leaf(L7_thread_cache, CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), |
aoqi@0 | 676 | G2_thread, Oissuing_pc->after_save()); |
aoqi@0 | 677 | __ verify_not_null_oop(Oexception->after_save()); |
aoqi@0 | 678 | |
aoqi@0 | 679 | // Restore SP from L7 if the exception PC is a method handle call site. |
aoqi@0 | 680 | __ mov(O0, G5); // Save the target address. |
aoqi@0 | 681 | __ lduw(Address(G2_thread, JavaThread::is_method_handle_return_offset()), L0); |
aoqi@0 | 682 | __ tst(L0); // Condition codes are preserved over the restore. |
aoqi@0 | 683 | __ restore(); |
aoqi@0 | 684 | |
aoqi@0 | 685 | __ jmp(G5, 0); |
aoqi@0 | 686 | __ delayed()->movcc(Assembler::notZero, false, Assembler::icc, L7_mh_SP_save, SP); // Restore SP if required. |
aoqi@0 | 687 | } |
aoqi@0 | 688 | break; |
aoqi@0 | 689 | |
aoqi@0 | 690 | case throw_array_store_exception_id: |
aoqi@0 | 691 | { |
aoqi@0 | 692 | __ set_info("throw_array_store_exception", dont_gc_arguments); |
aoqi@0 | 693 | oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_array_store_exception), true); |
aoqi@0 | 694 | } |
aoqi@0 | 695 | break; |
aoqi@0 | 696 | |
aoqi@0 | 697 | case throw_class_cast_exception_id: |
aoqi@0 | 698 | { |
aoqi@0 | 699 | // G4: object |
aoqi@0 | 700 | __ set_info("throw_class_cast_exception", dont_gc_arguments); |
aoqi@0 | 701 | oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_class_cast_exception), true); |
aoqi@0 | 702 | } |
aoqi@0 | 703 | break; |
aoqi@0 | 704 | |
aoqi@0 | 705 | case throw_incompatible_class_change_error_id: |
aoqi@0 | 706 | { |
aoqi@0 | 707 | __ set_info("throw_incompatible_class_cast_exception", dont_gc_arguments); |
aoqi@0 | 708 | oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_incompatible_class_change_error), false); |
aoqi@0 | 709 | } |
aoqi@0 | 710 | break; |
aoqi@0 | 711 | |
aoqi@0 | 712 | case slow_subtype_check_id: |
aoqi@0 | 713 | { // Support for uint StubRoutine::partial_subtype_check( Klass sub, Klass super ); |
aoqi@0 | 714 | // Arguments : |
aoqi@0 | 715 | // |
aoqi@0 | 716 | // ret : G3 |
aoqi@0 | 717 | // sub : G3, argument, destroyed |
aoqi@0 | 718 | // super: G1, argument, not changed |
aoqi@0 | 719 | // raddr: O7, blown by call |
aoqi@0 | 720 | Label miss; |
aoqi@0 | 721 | |
aoqi@0 | 722 | __ save_frame(0); // Blow no registers! |
aoqi@0 | 723 | |
aoqi@0 | 724 | __ check_klass_subtype_slow_path(G3, G1, L0, L1, L2, L4, NULL, &miss); |
aoqi@0 | 725 | |
aoqi@0 | 726 | __ mov(1, G3); |
aoqi@0 | 727 | __ ret(); // Result in G5 is 'true' |
aoqi@0 | 728 | __ delayed()->restore(); // free copy or add can go here |
aoqi@0 | 729 | |
aoqi@0 | 730 | __ bind(miss); |
aoqi@0 | 731 | __ mov(0, G3); |
aoqi@0 | 732 | __ ret(); // Result in G5 is 'false' |
aoqi@0 | 733 | __ delayed()->restore(); // free copy or add can go here |
aoqi@0 | 734 | } |
aoqi@0 | 735 | |
aoqi@0 | 736 | case monitorenter_nofpu_id: |
aoqi@0 | 737 | case monitorenter_id: |
aoqi@0 | 738 | { // G4: object |
aoqi@0 | 739 | // G5: lock address |
aoqi@0 | 740 | __ set_info("monitorenter", dont_gc_arguments); |
aoqi@0 | 741 | |
aoqi@0 | 742 | int save_fpu_registers = (id == monitorenter_id); |
aoqi@0 | 743 | // make a frame and preserve the caller's caller-save registers |
aoqi@0 | 744 | OopMap* oop_map = save_live_registers(sasm, save_fpu_registers); |
aoqi@0 | 745 | |
aoqi@0 | 746 | int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, monitorenter), G4, G5); |
aoqi@0 | 747 | |
aoqi@0 | 748 | oop_maps = new OopMapSet(); |
aoqi@0 | 749 | oop_maps->add_gc_map(call_offset, oop_map); |
aoqi@0 | 750 | restore_live_registers(sasm, save_fpu_registers); |
aoqi@0 | 751 | |
aoqi@0 | 752 | __ ret(); |
aoqi@0 | 753 | __ delayed()->restore(); |
aoqi@0 | 754 | } |
aoqi@0 | 755 | break; |
aoqi@0 | 756 | |
aoqi@0 | 757 | case monitorexit_nofpu_id: |
aoqi@0 | 758 | case monitorexit_id: |
aoqi@0 | 759 | { // G4: lock address |
aoqi@0 | 760 | // note: really a leaf routine but must setup last java sp |
aoqi@0 | 761 | // => use call_RT for now (speed can be improved by |
aoqi@0 | 762 | // doing last java sp setup manually) |
aoqi@0 | 763 | __ set_info("monitorexit", dont_gc_arguments); |
aoqi@0 | 764 | |
aoqi@0 | 765 | int save_fpu_registers = (id == monitorexit_id); |
aoqi@0 | 766 | // make a frame and preserve the caller's caller-save registers |
aoqi@0 | 767 | OopMap* oop_map = save_live_registers(sasm, save_fpu_registers); |
aoqi@0 | 768 | |
aoqi@0 | 769 | int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, monitorexit), G4); |
aoqi@0 | 770 | |
aoqi@0 | 771 | oop_maps = new OopMapSet(); |
aoqi@0 | 772 | oop_maps->add_gc_map(call_offset, oop_map); |
aoqi@0 | 773 | restore_live_registers(sasm, save_fpu_registers); |
aoqi@0 | 774 | |
aoqi@0 | 775 | __ ret(); |
aoqi@0 | 776 | __ delayed()->restore(); |
aoqi@0 | 777 | } |
aoqi@0 | 778 | break; |
aoqi@0 | 779 | |
aoqi@0 | 780 | case deoptimize_id: |
aoqi@0 | 781 | { |
aoqi@0 | 782 | __ set_info("deoptimize", dont_gc_arguments); |
aoqi@0 | 783 | OopMap* oop_map = save_live_registers(sasm); |
aoqi@0 | 784 | int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, deoptimize)); |
aoqi@0 | 785 | oop_maps = new OopMapSet(); |
aoqi@0 | 786 | oop_maps->add_gc_map(call_offset, oop_map); |
aoqi@0 | 787 | restore_live_registers(sasm); |
aoqi@0 | 788 | DeoptimizationBlob* deopt_blob = SharedRuntime::deopt_blob(); |
aoqi@0 | 789 | assert(deopt_blob != NULL, "deoptimization blob must have been created"); |
aoqi@0 | 790 | AddressLiteral dest(deopt_blob->unpack_with_reexecution()); |
aoqi@0 | 791 | __ jump_to(dest, O0); |
aoqi@0 | 792 | __ delayed()->restore(); |
aoqi@0 | 793 | } |
aoqi@0 | 794 | break; |
aoqi@0 | 795 | |
aoqi@0 | 796 | case access_field_patching_id: |
aoqi@0 | 797 | { __ set_info("access_field_patching", dont_gc_arguments); |
aoqi@0 | 798 | oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, access_field_patching)); |
aoqi@0 | 799 | } |
aoqi@0 | 800 | break; |
aoqi@0 | 801 | |
aoqi@0 | 802 | case load_klass_patching_id: |
aoqi@0 | 803 | { __ set_info("load_klass_patching", dont_gc_arguments); |
aoqi@0 | 804 | oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, move_klass_patching)); |
aoqi@0 | 805 | } |
aoqi@0 | 806 | break; |
aoqi@0 | 807 | |
aoqi@0 | 808 | case load_mirror_patching_id: |
aoqi@0 | 809 | { __ set_info("load_mirror_patching", dont_gc_arguments); |
aoqi@0 | 810 | oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, move_mirror_patching)); |
aoqi@0 | 811 | } |
aoqi@0 | 812 | break; |
aoqi@0 | 813 | |
aoqi@0 | 814 | case load_appendix_patching_id: |
aoqi@0 | 815 | { __ set_info("load_appendix_patching", dont_gc_arguments); |
aoqi@0 | 816 | oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, move_appendix_patching)); |
aoqi@0 | 817 | } |
aoqi@0 | 818 | break; |
aoqi@0 | 819 | |
aoqi@0 | 820 | case dtrace_object_alloc_id: |
aoqi@0 | 821 | { // O0: object |
aoqi@0 | 822 | __ set_info("dtrace_object_alloc", dont_gc_arguments); |
aoqi@0 | 823 | // we can't gc here so skip the oopmap but make sure that all |
aoqi@0 | 824 | // the live registers get saved. |
aoqi@0 | 825 | save_live_registers(sasm); |
aoqi@0 | 826 | |
aoqi@0 | 827 | __ save_thread(L7_thread_cache); |
aoqi@0 | 828 | __ call(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc), |
aoqi@0 | 829 | relocInfo::runtime_call_type); |
aoqi@0 | 830 | __ delayed()->mov(I0, O0); |
aoqi@0 | 831 | __ restore_thread(L7_thread_cache); |
aoqi@0 | 832 | |
aoqi@0 | 833 | restore_live_registers(sasm); |
aoqi@0 | 834 | __ ret(); |
aoqi@0 | 835 | __ delayed()->restore(); |
aoqi@0 | 836 | } |
aoqi@0 | 837 | break; |
aoqi@0 | 838 | |
aoqi@0 | 839 | #if INCLUDE_ALL_GCS |
aoqi@0 | 840 | case g1_pre_barrier_slow_id: |
aoqi@0 | 841 | { // G4: previous value of memory |
aoqi@0 | 842 | BarrierSet* bs = Universe::heap()->barrier_set(); |
aoqi@0 | 843 | if (bs->kind() != BarrierSet::G1SATBCTLogging) { |
aoqi@0 | 844 | __ save_frame(0); |
aoqi@0 | 845 | __ set((int)id, O1); |
aoqi@0 | 846 | __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), I0); |
aoqi@0 | 847 | __ should_not_reach_here(); |
aoqi@0 | 848 | break; |
aoqi@0 | 849 | } |
aoqi@0 | 850 | |
aoqi@0 | 851 | __ set_info("g1_pre_barrier_slow_id", dont_gc_arguments); |
aoqi@0 | 852 | |
aoqi@0 | 853 | Register pre_val = G4; |
aoqi@0 | 854 | Register tmp = G1_scratch; |
aoqi@0 | 855 | Register tmp2 = G3_scratch; |
aoqi@0 | 856 | |
aoqi@0 | 857 | Label refill, restart; |
aoqi@0 | 858 | bool with_frame = false; // I don't know if we can do with-frame. |
aoqi@0 | 859 | int satb_q_index_byte_offset = |
aoqi@0 | 860 | in_bytes(JavaThread::satb_mark_queue_offset() + |
aoqi@0 | 861 | PtrQueue::byte_offset_of_index()); |
aoqi@0 | 862 | int satb_q_buf_byte_offset = |
aoqi@0 | 863 | in_bytes(JavaThread::satb_mark_queue_offset() + |
aoqi@0 | 864 | PtrQueue::byte_offset_of_buf()); |
aoqi@0 | 865 | |
aoqi@0 | 866 | __ bind(restart); |
aoqi@0 | 867 | // Load the index into the SATB buffer. PtrQueue::_index is a |
aoqi@0 | 868 | // size_t so ld_ptr is appropriate |
aoqi@0 | 869 | __ ld_ptr(G2_thread, satb_q_index_byte_offset, tmp); |
aoqi@0 | 870 | |
aoqi@0 | 871 | // index == 0? |
aoqi@0 | 872 | __ cmp_and_brx_short(tmp, G0, Assembler::equal, Assembler::pn, refill); |
aoqi@0 | 873 | |
aoqi@0 | 874 | __ ld_ptr(G2_thread, satb_q_buf_byte_offset, tmp2); |
aoqi@0 | 875 | __ sub(tmp, oopSize, tmp); |
aoqi@0 | 876 | |
aoqi@0 | 877 | __ st_ptr(pre_val, tmp2, tmp); // [_buf + index] := <address_of_card> |
aoqi@0 | 878 | // Use return-from-leaf |
aoqi@0 | 879 | __ retl(); |
aoqi@0 | 880 | __ delayed()->st_ptr(tmp, G2_thread, satb_q_index_byte_offset); |
aoqi@0 | 881 | |
aoqi@0 | 882 | __ bind(refill); |
aoqi@0 | 883 | __ save_frame(0); |
aoqi@0 | 884 | |
aoqi@0 | 885 | __ mov(pre_val, L0); |
aoqi@0 | 886 | __ mov(tmp, L1); |
aoqi@0 | 887 | __ mov(tmp2, L2); |
aoqi@0 | 888 | |
aoqi@0 | 889 | __ call_VM_leaf(L7_thread_cache, |
aoqi@0 | 890 | CAST_FROM_FN_PTR(address, |
aoqi@0 | 891 | SATBMarkQueueSet::handle_zero_index_for_thread), |
aoqi@0 | 892 | G2_thread); |
aoqi@0 | 893 | |
aoqi@0 | 894 | __ mov(L0, pre_val); |
aoqi@0 | 895 | __ mov(L1, tmp); |
aoqi@0 | 896 | __ mov(L2, tmp2); |
aoqi@0 | 897 | |
aoqi@0 | 898 | __ br(Assembler::always, /*annul*/false, Assembler::pt, restart); |
aoqi@0 | 899 | __ delayed()->restore(); |
aoqi@0 | 900 | } |
aoqi@0 | 901 | break; |
aoqi@0 | 902 | |
aoqi@0 | 903 | case g1_post_barrier_slow_id: |
aoqi@0 | 904 | { |
aoqi@0 | 905 | BarrierSet* bs = Universe::heap()->barrier_set(); |
aoqi@0 | 906 | if (bs->kind() != BarrierSet::G1SATBCTLogging) { |
aoqi@0 | 907 | __ save_frame(0); |
aoqi@0 | 908 | __ set((int)id, O1); |
aoqi@0 | 909 | __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), I0); |
aoqi@0 | 910 | __ should_not_reach_here(); |
aoqi@0 | 911 | break; |
aoqi@0 | 912 | } |
aoqi@0 | 913 | |
aoqi@0 | 914 | __ set_info("g1_post_barrier_slow_id", dont_gc_arguments); |
aoqi@0 | 915 | |
aoqi@0 | 916 | Register addr = G4; |
aoqi@0 | 917 | Register cardtable = G5; |
aoqi@0 | 918 | Register tmp = G1_scratch; |
aoqi@0 | 919 | Register tmp2 = G3_scratch; |
aoqi@0 | 920 | jbyte* byte_map_base = ((CardTableModRefBS*)bs)->byte_map_base; |
aoqi@0 | 921 | |
aoqi@0 | 922 | Label not_already_dirty, restart, refill, young_card; |
aoqi@0 | 923 | |
aoqi@0 | 924 | #ifdef _LP64 |
aoqi@0 | 925 | __ srlx(addr, CardTableModRefBS::card_shift, addr); |
aoqi@0 | 926 | #else |
aoqi@0 | 927 | __ srl(addr, CardTableModRefBS::card_shift, addr); |
aoqi@0 | 928 | #endif |
aoqi@0 | 929 | |
aoqi@0 | 930 | AddressLiteral rs(byte_map_base); |
aoqi@0 | 931 | __ set(rs, cardtable); // cardtable := <card table base> |
aoqi@0 | 932 | __ ldub(addr, cardtable, tmp); // tmp := [addr + cardtable] |
aoqi@0 | 933 | |
aoqi@0 | 934 | __ cmp_and_br_short(tmp, G1SATBCardTableModRefBS::g1_young_card_val(), Assembler::equal, Assembler::pt, young_card); |
aoqi@0 | 935 | |
aoqi@0 | 936 | __ membar(Assembler::Membar_mask_bits(Assembler::StoreLoad)); |
aoqi@0 | 937 | __ ldub(addr, cardtable, tmp); // tmp := [addr + cardtable] |
aoqi@0 | 938 | |
aoqi@0 | 939 | assert(CardTableModRefBS::dirty_card_val() == 0, "otherwise check this code"); |
aoqi@0 | 940 | __ cmp_and_br_short(tmp, G0, Assembler::notEqual, Assembler::pt, not_already_dirty); |
aoqi@0 | 941 | |
aoqi@0 | 942 | __ bind(young_card); |
aoqi@0 | 943 | // We didn't take the branch, so we're already dirty: return. |
aoqi@0 | 944 | // Use return-from-leaf |
aoqi@0 | 945 | __ retl(); |
aoqi@0 | 946 | __ delayed()->nop(); |
aoqi@0 | 947 | |
aoqi@0 | 948 | // Not dirty. |
aoqi@0 | 949 | __ bind(not_already_dirty); |
aoqi@0 | 950 | |
aoqi@0 | 951 | // Get cardtable + tmp into a reg by itself |
aoqi@0 | 952 | __ add(addr, cardtable, tmp2); |
aoqi@0 | 953 | |
aoqi@0 | 954 | // First, dirty it. |
aoqi@0 | 955 | __ stb(G0, tmp2, 0); // [cardPtr] := 0 (i.e., dirty). |
aoqi@0 | 956 | |
aoqi@0 | 957 | Register tmp3 = cardtable; |
aoqi@0 | 958 | Register tmp4 = tmp; |
aoqi@0 | 959 | |
aoqi@0 | 960 | // these registers are now dead |
aoqi@0 | 961 | addr = cardtable = tmp = noreg; |
aoqi@0 | 962 | |
aoqi@0 | 963 | int dirty_card_q_index_byte_offset = |
aoqi@0 | 964 | in_bytes(JavaThread::dirty_card_queue_offset() + |
aoqi@0 | 965 | PtrQueue::byte_offset_of_index()); |
aoqi@0 | 966 | int dirty_card_q_buf_byte_offset = |
aoqi@0 | 967 | in_bytes(JavaThread::dirty_card_queue_offset() + |
aoqi@0 | 968 | PtrQueue::byte_offset_of_buf()); |
aoqi@0 | 969 | |
aoqi@0 | 970 | __ bind(restart); |
aoqi@0 | 971 | |
aoqi@0 | 972 | // Get the index into the update buffer. PtrQueue::_index is |
aoqi@0 | 973 | // a size_t so ld_ptr is appropriate here. |
aoqi@0 | 974 | __ ld_ptr(G2_thread, dirty_card_q_index_byte_offset, tmp3); |
aoqi@0 | 975 | |
aoqi@0 | 976 | // index == 0? |
aoqi@0 | 977 | __ cmp_and_brx_short(tmp3, G0, Assembler::equal, Assembler::pn, refill); |
aoqi@0 | 978 | |
aoqi@0 | 979 | __ ld_ptr(G2_thread, dirty_card_q_buf_byte_offset, tmp4); |
aoqi@0 | 980 | __ sub(tmp3, oopSize, tmp3); |
aoqi@0 | 981 | |
aoqi@0 | 982 | __ st_ptr(tmp2, tmp4, tmp3); // [_buf + index] := <address_of_card> |
aoqi@0 | 983 | // Use return-from-leaf |
aoqi@0 | 984 | __ retl(); |
aoqi@0 | 985 | __ delayed()->st_ptr(tmp3, G2_thread, dirty_card_q_index_byte_offset); |
aoqi@0 | 986 | |
aoqi@0 | 987 | __ bind(refill); |
aoqi@0 | 988 | __ save_frame(0); |
aoqi@0 | 989 | |
aoqi@0 | 990 | __ mov(tmp2, L0); |
aoqi@0 | 991 | __ mov(tmp3, L1); |
aoqi@0 | 992 | __ mov(tmp4, L2); |
aoqi@0 | 993 | |
aoqi@0 | 994 | __ call_VM_leaf(L7_thread_cache, |
aoqi@0 | 995 | CAST_FROM_FN_PTR(address, |
aoqi@0 | 996 | DirtyCardQueueSet::handle_zero_index_for_thread), |
aoqi@0 | 997 | G2_thread); |
aoqi@0 | 998 | |
aoqi@0 | 999 | __ mov(L0, tmp2); |
aoqi@0 | 1000 | __ mov(L1, tmp3); |
aoqi@0 | 1001 | __ mov(L2, tmp4); |
aoqi@0 | 1002 | |
aoqi@0 | 1003 | __ br(Assembler::always, /*annul*/false, Assembler::pt, restart); |
aoqi@0 | 1004 | __ delayed()->restore(); |
aoqi@0 | 1005 | } |
aoqi@0 | 1006 | break; |
aoqi@0 | 1007 | #endif // INCLUDE_ALL_GCS |
aoqi@0 | 1008 | |
aoqi@0 | 1009 | case predicate_failed_trap_id: |
aoqi@0 | 1010 | { |
aoqi@0 | 1011 | __ set_info("predicate_failed_trap", dont_gc_arguments); |
aoqi@0 | 1012 | OopMap* oop_map = save_live_registers(sasm); |
aoqi@0 | 1013 | |
aoqi@0 | 1014 | int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, predicate_failed_trap)); |
aoqi@0 | 1015 | |
aoqi@0 | 1016 | oop_maps = new OopMapSet(); |
aoqi@0 | 1017 | oop_maps->add_gc_map(call_offset, oop_map); |
aoqi@0 | 1018 | |
aoqi@0 | 1019 | DeoptimizationBlob* deopt_blob = SharedRuntime::deopt_blob(); |
aoqi@0 | 1020 | assert(deopt_blob != NULL, "deoptimization blob must have been created"); |
aoqi@0 | 1021 | restore_live_registers(sasm); |
aoqi@0 | 1022 | |
aoqi@0 | 1023 | AddressLiteral dest(deopt_blob->unpack_with_reexecution()); |
aoqi@0 | 1024 | __ jump_to(dest, O0); |
aoqi@0 | 1025 | __ delayed()->restore(); |
aoqi@0 | 1026 | } |
aoqi@0 | 1027 | break; |
aoqi@0 | 1028 | |
aoqi@0 | 1029 | default: |
aoqi@0 | 1030 | { __ set_info("unimplemented entry", dont_gc_arguments); |
aoqi@0 | 1031 | __ save_frame(0); |
aoqi@0 | 1032 | __ set((int)id, O1); |
aoqi@0 | 1033 | __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), O1); |
aoqi@0 | 1034 | __ should_not_reach_here(); |
aoqi@0 | 1035 | } |
aoqi@0 | 1036 | break; |
aoqi@0 | 1037 | } |
aoqi@0 | 1038 | return oop_maps; |
aoqi@0 | 1039 | } |
aoqi@0 | 1040 | |
aoqi@0 | 1041 | |
aoqi@0 | 1042 | OopMapSet* Runtime1::generate_handle_exception(StubID id, StubAssembler* sasm) { |
aoqi@0 | 1043 | __ block_comment("generate_handle_exception"); |
aoqi@0 | 1044 | |
aoqi@0 | 1045 | // Save registers, if required. |
aoqi@0 | 1046 | OopMapSet* oop_maps = new OopMapSet(); |
aoqi@0 | 1047 | OopMap* oop_map = NULL; |
aoqi@0 | 1048 | switch (id) { |
aoqi@0 | 1049 | case forward_exception_id: |
aoqi@0 | 1050 | // We're handling an exception in the context of a compiled frame. |
aoqi@0 | 1051 | // The registers have been saved in the standard places. Perform |
aoqi@0 | 1052 | // an exception lookup in the caller and dispatch to the handler |
aoqi@0 | 1053 | // if found. Otherwise unwind and dispatch to the callers |
aoqi@0 | 1054 | // exception handler. |
aoqi@0 | 1055 | oop_map = generate_oop_map(sasm, true); |
aoqi@0 | 1056 | |
aoqi@0 | 1057 | // transfer the pending exception to the exception_oop |
aoqi@0 | 1058 | __ ld_ptr(G2_thread, in_bytes(JavaThread::pending_exception_offset()), Oexception); |
aoqi@0 | 1059 | __ ld_ptr(Oexception, 0, G0); |
aoqi@0 | 1060 | __ st_ptr(G0, G2_thread, in_bytes(JavaThread::pending_exception_offset())); |
aoqi@0 | 1061 | __ add(I7, frame::pc_return_offset, Oissuing_pc); |
aoqi@0 | 1062 | break; |
aoqi@0 | 1063 | case handle_exception_id: |
aoqi@0 | 1064 | // At this point all registers MAY be live. |
aoqi@0 | 1065 | oop_map = save_live_registers(sasm); |
aoqi@0 | 1066 | __ mov(Oexception->after_save(), Oexception); |
aoqi@0 | 1067 | __ mov(Oissuing_pc->after_save(), Oissuing_pc); |
aoqi@0 | 1068 | break; |
aoqi@0 | 1069 | case handle_exception_from_callee_id: |
aoqi@0 | 1070 | // At this point all registers except exception oop (Oexception) |
aoqi@0 | 1071 | // and exception pc (Oissuing_pc) are dead. |
aoqi@0 | 1072 | oop_map = new OopMap(frame_size_in_bytes / sizeof(jint), 0); |
aoqi@0 | 1073 | sasm->set_frame_size(frame_size_in_bytes / BytesPerWord); |
aoqi@0 | 1074 | __ save_frame_c1(frame_size_in_bytes); |
aoqi@0 | 1075 | __ mov(Oexception->after_save(), Oexception); |
aoqi@0 | 1076 | __ mov(Oissuing_pc->after_save(), Oissuing_pc); |
aoqi@0 | 1077 | break; |
aoqi@0 | 1078 | default: ShouldNotReachHere(); |
aoqi@0 | 1079 | } |
aoqi@0 | 1080 | |
aoqi@0 | 1081 | __ verify_not_null_oop(Oexception); |
aoqi@0 | 1082 | |
aoqi@0 | 1083 | #ifdef ASSERT |
aoqi@0 | 1084 | // check that fields in JavaThread for exception oop and issuing pc are |
aoqi@0 | 1085 | // empty before writing to them |
aoqi@0 | 1086 | Label oop_empty; |
aoqi@0 | 1087 | Register scratch = I7; // We can use I7 here because it's overwritten later anyway. |
aoqi@0 | 1088 | __ ld_ptr(Address(G2_thread, JavaThread::exception_oop_offset()), scratch); |
aoqi@0 | 1089 | __ br_null(scratch, false, Assembler::pt, oop_empty); |
aoqi@0 | 1090 | __ delayed()->nop(); |
aoqi@0 | 1091 | __ stop("exception oop already set"); |
aoqi@0 | 1092 | __ bind(oop_empty); |
aoqi@0 | 1093 | |
aoqi@0 | 1094 | Label pc_empty; |
aoqi@0 | 1095 | __ ld_ptr(Address(G2_thread, JavaThread::exception_pc_offset()), scratch); |
aoqi@0 | 1096 | __ br_null(scratch, false, Assembler::pt, pc_empty); |
aoqi@0 | 1097 | __ delayed()->nop(); |
aoqi@0 | 1098 | __ stop("exception pc already set"); |
aoqi@0 | 1099 | __ bind(pc_empty); |
aoqi@0 | 1100 | #endif |
aoqi@0 | 1101 | |
aoqi@0 | 1102 | // save the exception and issuing pc in the thread |
aoqi@0 | 1103 | __ st_ptr(Oexception, G2_thread, in_bytes(JavaThread::exception_oop_offset())); |
aoqi@0 | 1104 | __ st_ptr(Oissuing_pc, G2_thread, in_bytes(JavaThread::exception_pc_offset())); |
aoqi@0 | 1105 | |
aoqi@0 | 1106 | // use the throwing pc as the return address to lookup (has bci & oop map) |
aoqi@0 | 1107 | __ mov(Oissuing_pc, I7); |
aoqi@0 | 1108 | __ sub(I7, frame::pc_return_offset, I7); |
aoqi@0 | 1109 | int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, exception_handler_for_pc)); |
aoqi@0 | 1110 | oop_maps->add_gc_map(call_offset, oop_map); |
aoqi@0 | 1111 | |
aoqi@0 | 1112 | // Note: if nmethod has been deoptimized then regardless of |
aoqi@0 | 1113 | // whether it had a handler or not we will deoptimize |
aoqi@0 | 1114 | // by entering the deopt blob with a pending exception. |
aoqi@0 | 1115 | |
aoqi@0 | 1116 | // Restore the registers that were saved at the beginning, remove |
aoqi@0 | 1117 | // the frame and jump to the exception handler. |
aoqi@0 | 1118 | switch (id) { |
aoqi@0 | 1119 | case forward_exception_id: |
aoqi@0 | 1120 | case handle_exception_id: |
aoqi@0 | 1121 | restore_live_registers(sasm); |
aoqi@0 | 1122 | __ jmp(O0, 0); |
aoqi@0 | 1123 | __ delayed()->restore(); |
aoqi@0 | 1124 | break; |
aoqi@0 | 1125 | case handle_exception_from_callee_id: |
aoqi@0 | 1126 | // Restore SP from L7 if the exception PC is a method handle call site. |
aoqi@0 | 1127 | __ mov(O0, G5); // Save the target address. |
aoqi@0 | 1128 | __ lduw(Address(G2_thread, JavaThread::is_method_handle_return_offset()), L0); |
aoqi@0 | 1129 | __ tst(L0); // Condition codes are preserved over the restore. |
aoqi@0 | 1130 | __ restore(); |
aoqi@0 | 1131 | |
aoqi@0 | 1132 | __ jmp(G5, 0); // jump to the exception handler |
aoqi@0 | 1133 | __ delayed()->movcc(Assembler::notZero, false, Assembler::icc, L7_mh_SP_save, SP); // Restore SP if required. |
aoqi@0 | 1134 | break; |
aoqi@0 | 1135 | default: ShouldNotReachHere(); |
aoqi@0 | 1136 | } |
aoqi@0 | 1137 | |
aoqi@0 | 1138 | return oop_maps; |
aoqi@0 | 1139 | } |
aoqi@0 | 1140 | |
aoqi@0 | 1141 | |
aoqi@0 | 1142 | #undef __ |
aoqi@0 | 1143 | |
aoqi@0 | 1144 | const char *Runtime1::pd_name_for_address(address entry) { |
aoqi@0 | 1145 | return "<unknown function>"; |
aoqi@0 | 1146 | } |