Mercurial > hg > truffle
annotate src/cpu/sparc/vm/c1_Runtime1_sparc.cpp @ 4771:22cee0ee8927
Merge
| author | kvn |
|---|---|
| date | Fri, 06 Jan 2012 20:09:20 -0800 |
| parents | 52b5d32fbfaf 069ab3f976d3 |
| children | da91efe96a93 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "c1/c1_Defs.hpp" | |
| 27 #include "c1/c1_MacroAssembler.hpp" | |
| 28 #include "c1/c1_Runtime1.hpp" | |
| 29 #include "interpreter/interpreter.hpp" | |
| 30 #include "nativeInst_sparc.hpp" | |
| 31 #include "oops/compiledICHolderOop.hpp" | |
| 32 #include "oops/oop.inline.hpp" | |
| 33 #include "prims/jvmtiExport.hpp" | |
| 34 #include "register_sparc.hpp" | |
| 35 #include "runtime/sharedRuntime.hpp" | |
| 36 #include "runtime/signature.hpp" | |
| 37 #include "runtime/vframeArray.hpp" | |
| 38 #include "vmreg_sparc.inline.hpp" | |
| 0 | 39 |
| 40 // Implementation of StubAssembler | |
| 41 | |
| 42 int StubAssembler::call_RT(Register oop_result1, Register oop_result2, address entry_point, int number_of_arguments) { | |
| 43 // for sparc changing the number of arguments doesn't change | |
| 44 // anything about the frame size so we'll always lie and claim that | |
| 45 // we are only passing 1 argument. | |
| 46 set_num_rt_args(1); | |
| 47 | |
| 48 assert_not_delayed(); | |
| 49 // bang stack before going to runtime | |
| 50 set(-os::vm_page_size() + STACK_BIAS, G3_scratch); | |
| 51 st(G0, SP, G3_scratch); | |
| 52 | |
| 53 // debugging support | |
| 54 assert(number_of_arguments >= 0 , "cannot have negative number of arguments"); | |
| 55 | |
| 56 set_last_Java_frame(SP, noreg); | |
| 57 if (VerifyThread) mov(G2_thread, O0); // about to be smashed; pass early | |
| 58 save_thread(L7_thread_cache); | |
| 59 // do the call | |
| 60 call(entry_point, relocInfo::runtime_call_type); | |
| 61 if (!VerifyThread) { | |
| 62 delayed()->mov(G2_thread, O0); // pass thread as first argument | |
| 63 } else { | |
| 64 delayed()->nop(); // (thread already passed) | |
| 65 } | |
| 66 int call_offset = offset(); // offset of return address | |
| 67 restore_thread(L7_thread_cache); | |
| 68 reset_last_Java_frame(); | |
| 69 | |
| 70 // check for pending exceptions | |
| 71 { Label L; | |
| 727 | 72 Address exception_addr(G2_thread, Thread::pending_exception_offset()); |
| 0 | 73 ld_ptr(exception_addr, Gtemp); |
| 3839 | 74 br_null_short(Gtemp, pt, L); |
| 727 | 75 Address vm_result_addr(G2_thread, JavaThread::vm_result_offset()); |
| 0 | 76 st_ptr(G0, vm_result_addr); |
| 727 | 77 Address vm_result_addr_2(G2_thread, JavaThread::vm_result_2_offset()); |
| 0 | 78 st_ptr(G0, vm_result_addr_2); |
| 79 | |
| 80 if (frame_size() == no_frame_size) { | |
| 81 // we use O7 linkage so that forward_exception_entry has the issuing PC | |
| 82 call(StubRoutines::forward_exception_entry(), relocInfo::runtime_call_type); | |
| 83 delayed()->restore(); | |
| 84 } else if (_stub_id == Runtime1::forward_exception_id) { | |
| 85 should_not_reach_here(); | |
| 86 } else { | |
| 727 | 87 AddressLiteral exc(Runtime1::entry_for(Runtime1::forward_exception_id)); |
| 88 jump_to(exc, G4); | |
| 0 | 89 delayed()->nop(); |
| 90 } | |
| 91 bind(L); | |
| 92 } | |
| 93 | |
| 94 // get oop result if there is one and reset the value in the thread | |
| 95 if (oop_result1->is_valid()) { // get oop result if there is one and reset it in the thread | |
| 96 get_vm_result (oop_result1); | |
| 97 } else { | |
| 98 // be a little paranoid and clear the result | |
| 727 | 99 Address vm_result_addr(G2_thread, JavaThread::vm_result_offset()); |
| 0 | 100 st_ptr(G0, vm_result_addr); |
| 101 } | |
| 102 | |
| 103 if (oop_result2->is_valid()) { | |
| 104 get_vm_result_2(oop_result2); | |
| 105 } else { | |
| 106 // be a little paranoid and clear the result | |
| 727 | 107 Address vm_result_addr_2(G2_thread, JavaThread::vm_result_2_offset()); |
| 0 | 108 st_ptr(G0, vm_result_addr_2); |
| 109 } | |
| 110 | |
| 111 return call_offset; | |
| 112 } | |
| 113 | |
| 114 | |
| 115 int StubAssembler::call_RT(Register oop_result1, Register oop_result2, address entry, Register arg1) { | |
| 116 // O0 is reserved for the thread | |
| 117 mov(arg1, O1); | |
| 118 return call_RT(oop_result1, oop_result2, entry, 1); | |
| 119 } | |
| 120 | |
| 121 | |
| 122 int StubAssembler::call_RT(Register oop_result1, Register oop_result2, address entry, Register arg1, Register arg2) { | |
| 123 // O0 is reserved for the thread | |
| 124 mov(arg1, O1); | |
| 125 mov(arg2, O2); assert(arg2 != O1, "smashed argument"); | |
| 126 return call_RT(oop_result1, oop_result2, entry, 2); | |
| 127 } | |
| 128 | |
| 129 | |
| 130 int StubAssembler::call_RT(Register oop_result1, Register oop_result2, address entry, Register arg1, Register arg2, Register arg3) { | |
| 131 // O0 is reserved for the thread | |
| 132 mov(arg1, O1); | |
| 133 mov(arg2, O2); assert(arg2 != O1, "smashed argument"); | |
| 134 mov(arg3, O3); assert(arg3 != O1 && arg3 != O2, "smashed argument"); | |
| 135 return call_RT(oop_result1, oop_result2, entry, 3); | |
| 136 } | |
| 137 | |
| 138 | |
| 139 // Implementation of Runtime1 | |
| 140 | |
| 141 #define __ sasm-> | |
| 142 | |
| 143 static int cpu_reg_save_offsets[FrameMap::nof_cpu_regs]; | |
| 144 static int fpu_reg_save_offsets[FrameMap::nof_fpu_regs]; | |
| 145 static int reg_save_size_in_words; | |
| 146 static int frame_size_in_bytes = -1; | |
| 147 | |
| 148 static OopMap* generate_oop_map(StubAssembler* sasm, bool save_fpu_registers) { | |
| 149 assert(frame_size_in_bytes == __ total_frame_size_in_bytes(reg_save_size_in_words), | |
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150 "mismatch in calculation"); |
| 0 | 151 sasm->set_frame_size(frame_size_in_bytes / BytesPerWord); |
| 152 int frame_size_in_slots = frame_size_in_bytes / sizeof(jint); | |
| 153 OopMap* oop_map = new OopMap(frame_size_in_slots, 0); | |
| 154 | |
| 155 int i; | |
| 156 for (i = 0; i < FrameMap::nof_cpu_regs; i++) { | |
| 157 Register r = as_Register(i); | |
| 158 if (r == G1 || r == G3 || r == G4 || r == G5) { | |
| 159 int sp_offset = cpu_reg_save_offsets[i]; | |
| 160 oop_map->set_callee_saved(VMRegImpl::stack2reg(sp_offset), | |
| 161 r->as_VMReg()); | |
| 162 } | |
| 163 } | |
| 164 | |
| 165 if (save_fpu_registers) { | |
| 166 for (i = 0; i < FrameMap::nof_fpu_regs; i++) { | |
| 167 FloatRegister r = as_FloatRegister(i); | |
| 168 int sp_offset = fpu_reg_save_offsets[i]; | |
| 169 oop_map->set_callee_saved(VMRegImpl::stack2reg(sp_offset), | |
| 170 r->as_VMReg()); | |
| 171 } | |
| 172 } | |
| 173 return oop_map; | |
| 174 } | |
| 175 | |
| 176 static OopMap* save_live_registers(StubAssembler* sasm, bool save_fpu_registers = true) { | |
| 177 assert(frame_size_in_bytes == __ total_frame_size_in_bytes(reg_save_size_in_words), | |
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178 "mismatch in calculation"); |
| 0 | 179 __ save_frame_c1(frame_size_in_bytes); |
| 180 | |
| 181 // Record volatile registers as callee-save values in an OopMap so their save locations will be | |
| 182 // propagated to the caller frame's RegisterMap during StackFrameStream construction (needed for | |
| 183 // deoptimization; see compiledVFrame::create_stack_value). The caller's I, L and O registers | |
| 184 // are saved in register windows - I's and L's in the caller's frame and O's in the stub frame | |
| 185 // (as the stub's I's) when the runtime routine called by the stub creates its frame. | |
| 186 // OopMap frame sizes are in c2 stack slot sizes (sizeof(jint)) | |
| 187 | |
| 188 int i; | |
| 189 for (i = 0; i < FrameMap::nof_cpu_regs; i++) { | |
| 190 Register r = as_Register(i); | |
| 191 if (r == G1 || r == G3 || r == G4 || r == G5) { | |
| 192 int sp_offset = cpu_reg_save_offsets[i]; | |
| 193 __ st_ptr(r, SP, (sp_offset * BytesPerWord) + STACK_BIAS); | |
| 194 } | |
| 195 } | |
| 196 | |
| 197 if (save_fpu_registers) { | |
| 198 for (i = 0; i < FrameMap::nof_fpu_regs; i++) { | |
| 199 FloatRegister r = as_FloatRegister(i); | |
| 200 int sp_offset = fpu_reg_save_offsets[i]; | |
| 201 __ stf(FloatRegisterImpl::S, r, SP, (sp_offset * BytesPerWord) + STACK_BIAS); | |
| 202 } | |
| 203 } | |
| 204 | |
| 205 return generate_oop_map(sasm, save_fpu_registers); | |
| 206 } | |
| 207 | |
| 208 static void restore_live_registers(StubAssembler* sasm, bool restore_fpu_registers = true) { | |
| 209 for (int i = 0; i < FrameMap::nof_cpu_regs; i++) { | |
| 210 Register r = as_Register(i); | |
| 211 if (r == G1 || r == G3 || r == G4 || r == G5) { | |
| 212 __ ld_ptr(SP, (cpu_reg_save_offsets[i] * BytesPerWord) + STACK_BIAS, r); | |
| 213 } | |
| 214 } | |
| 215 | |
| 216 if (restore_fpu_registers) { | |
| 217 for (int i = 0; i < FrameMap::nof_fpu_regs; i++) { | |
| 218 FloatRegister r = as_FloatRegister(i); | |
| 219 __ ldf(FloatRegisterImpl::S, SP, (fpu_reg_save_offsets[i] * BytesPerWord) + STACK_BIAS, r); | |
| 220 } | |
| 221 } | |
| 222 } | |
| 223 | |
| 224 | |
| 225 void Runtime1::initialize_pd() { | |
| 226 // compute word offsets from SP at which live (non-windowed) registers are captured by stub routines | |
| 227 // | |
| 228 // A stub routine will have a frame that is at least large enough to hold | |
| 229 // a register window save area (obviously) and the volatile g registers | |
| 230 // and floating registers. A user of save_live_registers can have a frame | |
| 231 // that has more scratch area in it (although typically they will use L-regs). | |
| 232 // in that case the frame will look like this (stack growing down) | |
| 233 // | |
| 234 // FP -> | | | |
| 235 // | scratch mem | | |
| 236 // | " " | | |
| 237 // -------------- | |
| 238 // | float regs | | |
| 239 // | " " | | |
| 240 // --------------- | |
| 241 // | G regs | | |
| 242 // | " " | | |
| 243 // --------------- | |
| 244 // | abi reg. | | |
| 245 // | window save | | |
| 246 // | area | | |
| 247 // SP -> --------------- | |
| 248 // | |
| 249 int i; | |
| 250 int sp_offset = round_to(frame::register_save_words, 2); // start doubleword aligned | |
| 251 | |
| 252 // only G int registers are saved explicitly; others are found in register windows | |
| 253 for (i = 0; i < FrameMap::nof_cpu_regs; i++) { | |
| 254 Register r = as_Register(i); | |
| 255 if (r == G1 || r == G3 || r == G4 || r == G5) { | |
| 256 cpu_reg_save_offsets[i] = sp_offset; | |
| 257 sp_offset++; | |
| 258 } | |
| 259 } | |
| 260 | |
| 261 // all float registers are saved explicitly | |
| 262 assert(FrameMap::nof_fpu_regs == 32, "double registers not handled here"); | |
| 263 for (i = 0; i < FrameMap::nof_fpu_regs; i++) { | |
| 264 fpu_reg_save_offsets[i] = sp_offset; | |
| 265 sp_offset++; | |
| 266 } | |
| 267 reg_save_size_in_words = sp_offset - frame::memory_parameter_word_sp_offset; | |
| 268 // this should match assembler::total_frame_size_in_bytes, which | |
| 269 // isn't callable from this context. It's checked by an assert when | |
| 270 // it's used though. | |
| 271 frame_size_in_bytes = align_size_up(sp_offset * wordSize, 8); | |
| 272 } | |
| 273 | |
| 274 | |
| 275 OopMapSet* Runtime1::generate_exception_throw(StubAssembler* sasm, address target, bool has_argument) { | |
| 276 // make a frame and preserve the caller's caller-save registers | |
| 277 OopMap* oop_map = save_live_registers(sasm); | |
| 278 int call_offset; | |
| 279 if (!has_argument) { | |
| 280 call_offset = __ call_RT(noreg, noreg, target); | |
| 281 } else { | |
| 282 call_offset = __ call_RT(noreg, noreg, target, G4); | |
| 283 } | |
| 284 OopMapSet* oop_maps = new OopMapSet(); | |
| 285 oop_maps->add_gc_map(call_offset, oop_map); | |
| 286 | |
| 287 __ should_not_reach_here(); | |
| 288 return oop_maps; | |
| 289 } | |
| 290 | |
| 291 | |
| 292 OopMapSet* Runtime1::generate_stub_call(StubAssembler* sasm, Register result, address target, | |
| 293 Register arg1, Register arg2, Register arg3) { | |
| 294 // make a frame and preserve the caller's caller-save registers | |
| 295 OopMap* oop_map = save_live_registers(sasm); | |
| 296 | |
| 297 int call_offset; | |
| 298 if (arg1 == noreg) { | |
| 299 call_offset = __ call_RT(result, noreg, target); | |
| 300 } else if (arg2 == noreg) { | |
| 301 call_offset = __ call_RT(result, noreg, target, arg1); | |
| 302 } else if (arg3 == noreg) { | |
| 303 call_offset = __ call_RT(result, noreg, target, arg1, arg2); | |
| 304 } else { | |
| 305 call_offset = __ call_RT(result, noreg, target, arg1, arg2, arg3); | |
| 306 } | |
| 307 OopMapSet* oop_maps = NULL; | |
| 308 | |
| 309 oop_maps = new OopMapSet(); | |
| 310 oop_maps->add_gc_map(call_offset, oop_map); | |
| 311 restore_live_registers(sasm); | |
| 312 | |
| 313 __ ret(); | |
| 314 __ delayed()->restore(); | |
| 315 | |
| 316 return oop_maps; | |
| 317 } | |
| 318 | |
| 319 | |
| 320 OopMapSet* Runtime1::generate_patching(StubAssembler* sasm, address target) { | |
| 321 // make a frame and preserve the caller's caller-save registers | |
| 322 OopMap* oop_map = save_live_registers(sasm); | |
| 323 | |
| 324 // call the runtime patching routine, returns non-zero if nmethod got deopted. | |
| 325 int call_offset = __ call_RT(noreg, noreg, target); | |
| 326 OopMapSet* oop_maps = new OopMapSet(); | |
| 327 oop_maps->add_gc_map(call_offset, oop_map); | |
| 328 | |
| 329 // re-execute the patched instruction or, if the nmethod was deoptmized, return to the | |
| 330 // deoptimization handler entry that will cause re-execution of the current bytecode | |
| 331 DeoptimizationBlob* deopt_blob = SharedRuntime::deopt_blob(); | |
| 332 assert(deopt_blob != NULL, "deoptimization blob must have been created"); | |
| 333 | |
| 334 Label no_deopt; | |
| 3839 | 335 __ br_null_short(O0, Assembler::pt, no_deopt); |
| 0 | 336 |
| 337 // return to the deoptimization handler entry for unpacking and rexecute | |
| 338 // if we simply returned the we'd deopt as if any call we patched had just | |
| 339 // returned. | |
| 340 | |
| 341 restore_live_registers(sasm); | |
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342 |
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343 AddressLiteral dest(deopt_blob->unpack_with_reexecution()); |
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344 __ jump_to(dest, O0); |
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345 __ delayed()->restore(); |
| 0 | 346 |
| 347 __ bind(no_deopt); | |
| 348 restore_live_registers(sasm); | |
| 349 __ ret(); | |
| 350 __ delayed()->restore(); | |
| 351 | |
| 352 return oop_maps; | |
| 353 } | |
| 354 | |
| 355 OopMapSet* Runtime1::generate_code_for(StubID id, StubAssembler* sasm) { | |
| 356 | |
| 357 OopMapSet* oop_maps = NULL; | |
| 358 // for better readability | |
| 359 const bool must_gc_arguments = true; | |
| 360 const bool dont_gc_arguments = false; | |
| 361 | |
| 362 // stub code & info for the different stubs | |
| 363 switch (id) { | |
| 364 case forward_exception_id: | |
| 365 { | |
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366 oop_maps = generate_handle_exception(id, sasm); |
| 0 | 367 } |
| 368 break; | |
| 369 | |
| 370 case new_instance_id: | |
| 371 case fast_new_instance_id: | |
| 372 case fast_new_instance_init_check_id: | |
| 373 { | |
| 374 Register G5_klass = G5; // Incoming | |
| 375 Register O0_obj = O0; // Outgoing | |
| 376 | |
| 377 if (id == new_instance_id) { | |
| 378 __ set_info("new_instance", dont_gc_arguments); | |
| 379 } else if (id == fast_new_instance_id) { | |
| 380 __ set_info("fast new_instance", dont_gc_arguments); | |
| 381 } else { | |
| 382 assert(id == fast_new_instance_init_check_id, "bad StubID"); | |
| 383 __ set_info("fast new_instance init check", dont_gc_arguments); | |
| 384 } | |
| 385 | |
| 386 if ((id == fast_new_instance_id || id == fast_new_instance_init_check_id) && | |
| 387 UseTLAB && FastTLABRefill) { | |
| 388 Label slow_path; | |
| 389 Register G1_obj_size = G1; | |
| 390 Register G3_t1 = G3; | |
| 391 Register G4_t2 = G4; | |
| 392 assert_different_registers(G5_klass, G1_obj_size, G3_t1, G4_t2); | |
| 393 | |
| 394 // Push a frame since we may do dtrace notification for the | |
| 395 // allocation which requires calling out and we don't want | |
| 396 // to stomp the real return address. | |
| 397 __ save_frame(0); | |
| 398 | |
| 399 if (id == fast_new_instance_init_check_id) { | |
| 400 // make sure the klass is initialized | |
| 4771 | 401 __ ldub(G5_klass, in_bytes(instanceKlass::init_state_offset()), G3_t1); |
| 3839 | 402 __ cmp_and_br_short(G3_t1, instanceKlass::fully_initialized, Assembler::notEqual, Assembler::pn, slow_path); |
| 0 | 403 } |
| 404 #ifdef ASSERT | |
| 405 // assert object can be fast path allocated | |
| 406 { | |
| 407 Label ok, not_ok; | |
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408 __ ld(G5_klass, in_bytes(Klass::layout_helper_offset()), G1_obj_size); |
| 3839 | 409 // make sure it's an instance (LH > 0) |
| 410 __ cmp_and_br_short(G1_obj_size, 0, Assembler::lessEqual, Assembler::pn, not_ok); | |
| 0 | 411 __ btst(Klass::_lh_instance_slow_path_bit, G1_obj_size); |
| 412 __ br(Assembler::zero, false, Assembler::pn, ok); | |
| 413 __ delayed()->nop(); | |
| 414 __ bind(not_ok); | |
| 415 __ stop("assert(can be fast path allocated)"); | |
| 416 __ should_not_reach_here(); | |
| 417 __ bind(ok); | |
| 418 } | |
| 419 #endif // ASSERT | |
| 420 // if we got here then the TLAB allocation failed, so try | |
| 421 // refilling the TLAB or allocating directly from eden. | |
| 422 Label retry_tlab, try_eden; | |
| 423 __ tlab_refill(retry_tlab, try_eden, slow_path); // preserves G5_klass | |
| 424 | |
| 425 __ bind(retry_tlab); | |
| 426 | |
| 427 // get the instance size | |
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428 __ ld(G5_klass, in_bytes(Klass::layout_helper_offset()), G1_obj_size); |
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429 |
| 0 | 430 __ tlab_allocate(O0_obj, G1_obj_size, 0, G3_t1, slow_path); |
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431 |
| 0 | 432 __ initialize_object(O0_obj, G5_klass, G1_obj_size, 0, G3_t1, G4_t2); |
| 433 __ verify_oop(O0_obj); | |
| 434 __ mov(O0, I0); | |
| 435 __ ret(); | |
| 436 __ delayed()->restore(); | |
| 437 | |
| 438 __ bind(try_eden); | |
| 439 // get the instance size | |
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440 __ ld(G5_klass, in_bytes(Klass::layout_helper_offset()), G1_obj_size); |
| 0 | 441 __ eden_allocate(O0_obj, G1_obj_size, 0, G3_t1, G4_t2, slow_path); |
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442 __ incr_allocated_bytes(G1_obj_size, G3_t1, G4_t2); |
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443 |
| 0 | 444 __ initialize_object(O0_obj, G5_klass, G1_obj_size, 0, G3_t1, G4_t2); |
| 445 __ verify_oop(O0_obj); | |
| 446 __ mov(O0, I0); | |
| 447 __ ret(); | |
| 448 __ delayed()->restore(); | |
| 449 | |
| 450 __ bind(slow_path); | |
| 451 | |
| 452 // pop this frame so generate_stub_call can push it's own | |
| 453 __ restore(); | |
| 454 } | |
| 455 | |
| 456 oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_instance), G5_klass); | |
| 457 // I0->O0: new instance | |
| 458 } | |
| 459 | |
| 460 break; | |
| 461 | |
| 462 case counter_overflow_id: | |
| 1783 | 463 // G4 contains bci, G5 contains method |
| 464 oop_maps = generate_stub_call(sasm, noreg, CAST_FROM_FN_PTR(address, counter_overflow), G4, G5); | |
| 0 | 465 break; |
| 466 | |
| 467 case new_type_array_id: | |
| 468 case new_object_array_id: | |
| 469 { | |
| 470 Register G5_klass = G5; // Incoming | |
| 471 Register G4_length = G4; // Incoming | |
| 472 Register O0_obj = O0; // Outgoing | |
| 473 | |
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474 Address klass_lh(G5_klass, Klass::layout_helper_offset()); |
| 0 | 475 assert(Klass::_lh_header_size_shift % BitsPerByte == 0, "bytewise"); |
| 476 assert(Klass::_lh_header_size_mask == 0xFF, "bytewise"); | |
| 477 // Use this offset to pick out an individual byte of the layout_helper: | |
| 478 const int klass_lh_header_size_offset = ((BytesPerInt - 1) // 3 - 2 selects byte {0,1,0,0} | |
| 479 - Klass::_lh_header_size_shift / BitsPerByte); | |
| 480 | |
| 481 if (id == new_type_array_id) { | |
| 482 __ set_info("new_type_array", dont_gc_arguments); | |
| 483 } else { | |
| 484 __ set_info("new_object_array", dont_gc_arguments); | |
| 485 } | |
| 486 | |
| 487 #ifdef ASSERT | |
| 488 // assert object type is really an array of the proper kind | |
| 489 { | |
| 490 Label ok; | |
| 491 Register G3_t1 = G3; | |
| 492 __ ld(klass_lh, G3_t1); | |
| 493 __ sra(G3_t1, Klass::_lh_array_tag_shift, G3_t1); | |
| 494 int tag = ((id == new_type_array_id) | |
| 495 ? Klass::_lh_array_tag_type_value | |
| 496 : Klass::_lh_array_tag_obj_value); | |
| 3839 | 497 __ cmp_and_brx_short(G3_t1, tag, Assembler::equal, Assembler::pt, ok); |
| 0 | 498 __ stop("assert(is an array klass)"); |
| 499 __ should_not_reach_here(); | |
| 500 __ bind(ok); | |
| 501 } | |
| 502 #endif // ASSERT | |
| 503 | |
| 504 if (UseTLAB && FastTLABRefill) { | |
| 505 Label slow_path; | |
| 506 Register G1_arr_size = G1; | |
| 507 Register G3_t1 = G3; | |
| 508 Register O1_t2 = O1; | |
| 509 assert_different_registers(G5_klass, G4_length, G1_arr_size, G3_t1, O1_t2); | |
| 510 | |
| 511 // check that array length is small enough for fast path | |
| 512 __ set(C1_MacroAssembler::max_array_allocation_length, G3_t1); | |
| 3839 | 513 __ cmp_and_br_short(G4_length, G3_t1, Assembler::greaterUnsigned, Assembler::pn, slow_path); |
| 0 | 514 |
| 515 // if we got here then the TLAB allocation failed, so try | |
| 516 // refilling the TLAB or allocating directly from eden. | |
| 517 Label retry_tlab, try_eden; | |
| 518 __ tlab_refill(retry_tlab, try_eden, slow_path); // preserves G4_length and G5_klass | |
| 519 | |
| 520 __ bind(retry_tlab); | |
| 521 | |
| 522 // get the allocation size: (length << (layout_helper & 0x1F)) + header_size | |
| 523 __ ld(klass_lh, G3_t1); | |
| 524 __ sll(G4_length, G3_t1, G1_arr_size); | |
| 525 __ srl(G3_t1, Klass::_lh_header_size_shift, G3_t1); | |
| 526 __ and3(G3_t1, Klass::_lh_header_size_mask, G3_t1); | |
| 527 __ add(G1_arr_size, G3_t1, G1_arr_size); | |
| 528 __ add(G1_arr_size, MinObjAlignmentInBytesMask, G1_arr_size); // align up | |
| 529 __ and3(G1_arr_size, ~MinObjAlignmentInBytesMask, G1_arr_size); | |
| 530 | |
| 531 __ tlab_allocate(O0_obj, G1_arr_size, 0, G3_t1, slow_path); // preserves G1_arr_size | |
| 532 | |
| 533 __ initialize_header(O0_obj, G5_klass, G4_length, G3_t1, O1_t2); | |
| 534 __ ldub(klass_lh, G3_t1, klass_lh_header_size_offset); | |
| 535 __ sub(G1_arr_size, G3_t1, O1_t2); // body length | |
| 536 __ add(O0_obj, G3_t1, G3_t1); // body start | |
| 537 __ initialize_body(G3_t1, O1_t2); | |
| 538 __ verify_oop(O0_obj); | |
| 539 __ retl(); | |
| 540 __ delayed()->nop(); | |
| 541 | |
| 542 __ bind(try_eden); | |
| 543 // get the allocation size: (length << (layout_helper & 0x1F)) + header_size | |
| 544 __ ld(klass_lh, G3_t1); | |
| 545 __ sll(G4_length, G3_t1, G1_arr_size); | |
| 546 __ srl(G3_t1, Klass::_lh_header_size_shift, G3_t1); | |
| 547 __ and3(G3_t1, Klass::_lh_header_size_mask, G3_t1); | |
| 548 __ add(G1_arr_size, G3_t1, G1_arr_size); | |
| 549 __ add(G1_arr_size, MinObjAlignmentInBytesMask, G1_arr_size); | |
| 550 __ and3(G1_arr_size, ~MinObjAlignmentInBytesMask, G1_arr_size); | |
| 551 | |
| 552 __ eden_allocate(O0_obj, G1_arr_size, 0, G3_t1, O1_t2, slow_path); // preserves G1_arr_size | |
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553 __ incr_allocated_bytes(G1_arr_size, G3_t1, O1_t2); |
| 0 | 554 |
| 555 __ initialize_header(O0_obj, G5_klass, G4_length, G3_t1, O1_t2); | |
| 556 __ ldub(klass_lh, G3_t1, klass_lh_header_size_offset); | |
| 557 __ sub(G1_arr_size, G3_t1, O1_t2); // body length | |
| 558 __ add(O0_obj, G3_t1, G3_t1); // body start | |
| 559 __ initialize_body(G3_t1, O1_t2); | |
| 560 __ verify_oop(O0_obj); | |
| 561 __ retl(); | |
| 562 __ delayed()->nop(); | |
| 563 | |
| 564 __ bind(slow_path); | |
| 565 } | |
| 566 | |
| 567 if (id == new_type_array_id) { | |
| 568 oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_type_array), G5_klass, G4_length); | |
| 569 } else { | |
| 570 oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_object_array), G5_klass, G4_length); | |
| 571 } | |
| 572 // I0 -> O0: new array | |
| 573 } | |
| 574 break; | |
| 575 | |
| 576 case new_multi_array_id: | |
| 577 { // O0: klass | |
| 578 // O1: rank | |
| 579 // O2: address of 1st dimension | |
| 580 __ set_info("new_multi_array", dont_gc_arguments); | |
| 581 oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_multi_array), I0, I1, I2); | |
| 582 // I0 -> O0: new multi array | |
| 583 } | |
| 584 break; | |
| 585 | |
| 586 case register_finalizer_id: | |
| 587 { | |
| 588 __ set_info("register_finalizer", dont_gc_arguments); | |
| 589 | |
| 590 // load the klass and check the has finalizer flag | |
| 591 Label register_finalizer; | |
| 592 Register t = O1; | |
| 2002 | 593 __ load_klass(O0, t); |
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594 __ ld(t, in_bytes(Klass::access_flags_offset()), t); |
| 0 | 595 __ set(JVM_ACC_HAS_FINALIZER, G3); |
| 596 __ andcc(G3, t, G0); | |
| 597 __ br(Assembler::notZero, false, Assembler::pt, register_finalizer); | |
| 598 __ delayed()->nop(); | |
| 599 | |
| 600 // do a leaf return | |
| 601 __ retl(); | |
| 602 __ delayed()->nop(); | |
| 603 | |
| 604 __ bind(register_finalizer); | |
| 605 OopMap* oop_map = save_live_registers(sasm); | |
| 606 int call_offset = __ call_RT(noreg, noreg, | |
| 607 CAST_FROM_FN_PTR(address, SharedRuntime::register_finalizer), I0); | |
| 608 oop_maps = new OopMapSet(); | |
| 609 oop_maps->add_gc_map(call_offset, oop_map); | |
| 610 | |
| 611 // Now restore all the live registers | |
| 612 restore_live_registers(sasm); | |
| 613 | |
| 614 __ ret(); | |
| 615 __ delayed()->restore(); | |
| 616 } | |
| 617 break; | |
| 618 | |
| 619 case throw_range_check_failed_id: | |
| 620 { __ set_info("range_check_failed", dont_gc_arguments); // arguments will be discarded | |
| 621 // G4: index | |
| 622 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_range_check_exception), true); | |
| 623 } | |
| 624 break; | |
| 625 | |
| 626 case throw_index_exception_id: | |
| 627 { __ set_info("index_range_check_failed", dont_gc_arguments); // arguments will be discarded | |
| 628 // G4: index | |
| 629 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_index_exception), true); | |
| 630 } | |
| 631 break; | |
| 632 | |
| 633 case throw_div0_exception_id: | |
| 634 { __ set_info("throw_div0_exception", dont_gc_arguments); | |
| 635 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_div0_exception), false); | |
| 636 } | |
| 637 break; | |
| 638 | |
| 639 case throw_null_pointer_exception_id: | |
| 640 { __ set_info("throw_null_pointer_exception", dont_gc_arguments); | |
| 641 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_null_pointer_exception), false); | |
| 642 } | |
| 643 break; | |
| 644 | |
| 645 case handle_exception_id: | |
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646 { __ set_info("handle_exception", dont_gc_arguments); |
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647 oop_maps = generate_handle_exception(id, sasm); |
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648 } |
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649 break; |
| 0 | 650 |
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651 case handle_exception_from_callee_id: |
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652 { __ set_info("handle_exception_from_callee", dont_gc_arguments); |
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653 oop_maps = generate_handle_exception(id, sasm); |
| 0 | 654 } |
| 655 break; | |
| 656 | |
| 657 case unwind_exception_id: | |
| 658 { | |
| 659 // O0: exception | |
| 660 // I7: address of call to this method | |
| 661 | |
| 662 __ set_info("unwind_exception", dont_gc_arguments); | |
| 663 __ mov(Oexception, Oexception->after_save()); | |
| 664 __ add(I7, frame::pc_return_offset, Oissuing_pc->after_save()); | |
| 665 | |
| 666 __ call_VM_leaf(L7_thread_cache, CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), | |
| 1295 | 667 G2_thread, Oissuing_pc->after_save()); |
| 0 | 668 __ verify_not_null_oop(Oexception->after_save()); |
| 1564 | 669 |
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670 // Restore SP from L7 if the exception PC is a method handle call site. |
| 1564 | 671 __ mov(O0, G5); // Save the target address. |
| 672 __ lduw(Address(G2_thread, JavaThread::is_method_handle_return_offset()), L0); | |
| 673 __ tst(L0); // Condition codes are preserved over the restore. | |
| 674 __ restore(); | |
| 675 | |
| 676 __ jmp(G5, 0); | |
| 677 __ delayed()->movcc(Assembler::notZero, false, Assembler::icc, L7_mh_SP_save, SP); // Restore SP if required. | |
| 0 | 678 } |
| 679 break; | |
| 680 | |
| 681 case throw_array_store_exception_id: | |
| 682 { | |
| 683 __ set_info("throw_array_store_exception", dont_gc_arguments); | |
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684 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_array_store_exception), true); |
| 0 | 685 } |
| 686 break; | |
| 687 | |
| 688 case throw_class_cast_exception_id: | |
| 689 { | |
| 690 // G4: object | |
| 691 __ set_info("throw_class_cast_exception", dont_gc_arguments); | |
| 692 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_class_cast_exception), true); | |
| 693 } | |
| 694 break; | |
| 695 | |
| 696 case throw_incompatible_class_change_error_id: | |
| 697 { | |
| 698 __ set_info("throw_incompatible_class_cast_exception", dont_gc_arguments); | |
| 699 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_incompatible_class_change_error), false); | |
| 700 } | |
| 701 break; | |
| 702 | |
| 703 case slow_subtype_check_id: | |
| 704 { // Support for uint StubRoutine::partial_subtype_check( Klass sub, Klass super ); | |
| 705 // Arguments : | |
| 706 // | |
| 707 // ret : G3 | |
| 708 // sub : G3, argument, destroyed | |
| 709 // super: G1, argument, not changed | |
| 710 // raddr: O7, blown by call | |
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711 Label miss; |
| 0 | 712 |
| 713 __ save_frame(0); // Blow no registers! | |
| 714 | |
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715 __ check_klass_subtype_slow_path(G3, G1, L0, L1, L2, L4, NULL, &miss); |
| 0 | 716 |
| 717 __ mov(1, G3); | |
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718 __ ret(); // Result in G5 is 'true' |
| 0 | 719 __ delayed()->restore(); // free copy or add can go here |
| 720 | |
| 721 __ bind(miss); | |
| 722 __ mov(0, G3); | |
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723 __ ret(); // Result in G5 is 'false' |
| 0 | 724 __ delayed()->restore(); // free copy or add can go here |
| 725 } | |
| 726 | |
| 727 case monitorenter_nofpu_id: | |
| 728 case monitorenter_id: | |
| 729 { // G4: object | |
| 730 // G5: lock address | |
| 731 __ set_info("monitorenter", dont_gc_arguments); | |
| 732 | |
| 733 int save_fpu_registers = (id == monitorenter_id); | |
| 734 // make a frame and preserve the caller's caller-save registers | |
| 735 OopMap* oop_map = save_live_registers(sasm, save_fpu_registers); | |
| 736 | |
| 737 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, monitorenter), G4, G5); | |
| 738 | |
| 739 oop_maps = new OopMapSet(); | |
| 740 oop_maps->add_gc_map(call_offset, oop_map); | |
| 741 restore_live_registers(sasm, save_fpu_registers); | |
| 742 | |
| 743 __ ret(); | |
| 744 __ delayed()->restore(); | |
| 745 } | |
| 746 break; | |
| 747 | |
| 748 case monitorexit_nofpu_id: | |
| 749 case monitorexit_id: | |
| 750 { // G4: lock address | |
| 751 // note: really a leaf routine but must setup last java sp | |
| 752 // => use call_RT for now (speed can be improved by | |
| 753 // doing last java sp setup manually) | |
| 754 __ set_info("monitorexit", dont_gc_arguments); | |
| 755 | |
| 756 int save_fpu_registers = (id == monitorexit_id); | |
| 757 // make a frame and preserve the caller's caller-save registers | |
| 758 OopMap* oop_map = save_live_registers(sasm, save_fpu_registers); | |
| 759 | |
| 760 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, monitorexit), G4); | |
| 761 | |
| 762 oop_maps = new OopMapSet(); | |
| 763 oop_maps->add_gc_map(call_offset, oop_map); | |
| 764 restore_live_registers(sasm, save_fpu_registers); | |
| 765 | |
| 766 __ ret(); | |
| 767 __ delayed()->restore(); | |
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768 } |
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769 break; |
| 0 | 770 |
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771 case deoptimize_id: |
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772 { |
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773 __ set_info("deoptimize", dont_gc_arguments); |
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774 OopMap* oop_map = save_live_registers(sasm); |
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775 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, deoptimize)); |
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776 oop_maps = new OopMapSet(); |
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777 oop_maps->add_gc_map(call_offset, oop_map); |
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778 restore_live_registers(sasm); |
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779 DeoptimizationBlob* deopt_blob = SharedRuntime::deopt_blob(); |
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780 assert(deopt_blob != NULL, "deoptimization blob must have been created"); |
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781 AddressLiteral dest(deopt_blob->unpack_with_reexecution()); |
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782 __ jump_to(dest, O0); |
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783 __ delayed()->restore(); |
| 0 | 784 } |
| 785 break; | |
| 786 | |
| 787 case access_field_patching_id: | |
| 788 { __ set_info("access_field_patching", dont_gc_arguments); | |
| 789 oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, access_field_patching)); | |
| 790 } | |
| 791 break; | |
| 792 | |
| 793 case load_klass_patching_id: | |
| 794 { __ set_info("load_klass_patching", dont_gc_arguments); | |
| 795 oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, move_klass_patching)); | |
| 796 } | |
| 797 break; | |
| 798 | |
| 799 case dtrace_object_alloc_id: | |
| 800 { // O0: object | |
| 801 __ set_info("dtrace_object_alloc", dont_gc_arguments); | |
| 802 // we can't gc here so skip the oopmap but make sure that all | |
| 803 // the live registers get saved. | |
| 804 save_live_registers(sasm); | |
| 805 | |
| 806 __ save_thread(L7_thread_cache); | |
| 807 __ call(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc), | |
| 808 relocInfo::runtime_call_type); | |
| 809 __ delayed()->mov(I0, O0); | |
| 810 __ restore_thread(L7_thread_cache); | |
| 811 | |
| 812 restore_live_registers(sasm); | |
| 813 __ ret(); | |
| 814 __ delayed()->restore(); | |
| 815 } | |
| 816 break; | |
| 817 | |
| 342 | 818 #ifndef SERIALGC |
| 819 case g1_pre_barrier_slow_id: | |
| 820 { // G4: previous value of memory | |
| 821 BarrierSet* bs = Universe::heap()->barrier_set(); | |
| 822 if (bs->kind() != BarrierSet::G1SATBCTLogging) { | |
| 823 __ save_frame(0); | |
| 824 __ set((int)id, O1); | |
| 825 __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), I0); | |
| 826 __ should_not_reach_here(); | |
| 827 break; | |
| 828 } | |
| 829 | |
| 830 __ set_info("g1_pre_barrier_slow_id", dont_gc_arguments); | |
| 831 | |
| 832 Register pre_val = G4; | |
| 833 Register tmp = G1_scratch; | |
| 834 Register tmp2 = G3_scratch; | |
| 835 | |
| 836 Label refill, restart; | |
| 837 bool with_frame = false; // I don't know if we can do with-frame. | |
| 838 int satb_q_index_byte_offset = | |
| 839 in_bytes(JavaThread::satb_mark_queue_offset() + | |
| 840 PtrQueue::byte_offset_of_index()); | |
| 841 int satb_q_buf_byte_offset = | |
| 842 in_bytes(JavaThread::satb_mark_queue_offset() + | |
| 843 PtrQueue::byte_offset_of_buf()); | |
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844 |
| 342 | 845 __ bind(restart); |
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846 // Load the index into the SATB buffer. PtrQueue::_index is a |
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847 // size_t so ld_ptr is appropriate |
| 342 | 848 __ ld_ptr(G2_thread, satb_q_index_byte_offset, tmp); |
| 849 | |
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850 // index == 0? |
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851 __ cmp_and_brx_short(tmp, G0, Assembler::equal, Assembler::pn, refill); |
| 342 | 852 |
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853 __ ld_ptr(G2_thread, satb_q_buf_byte_offset, tmp2); |
| 342 | 854 __ sub(tmp, oopSize, tmp); |
| 855 | |
| 856 __ st_ptr(pre_val, tmp2, tmp); // [_buf + index] := <address_of_card> | |
| 857 // Use return-from-leaf | |
| 858 __ retl(); | |
| 859 __ delayed()->st_ptr(tmp, G2_thread, satb_q_index_byte_offset); | |
| 860 | |
| 861 __ bind(refill); | |
| 862 __ save_frame(0); | |
| 863 | |
| 864 __ mov(pre_val, L0); | |
| 865 __ mov(tmp, L1); | |
| 866 __ mov(tmp2, L2); | |
| 867 | |
| 868 __ call_VM_leaf(L7_thread_cache, | |
| 869 CAST_FROM_FN_PTR(address, | |
| 870 SATBMarkQueueSet::handle_zero_index_for_thread), | |
| 871 G2_thread); | |
| 872 | |
| 873 __ mov(L0, pre_val); | |
| 874 __ mov(L1, tmp); | |
| 875 __ mov(L2, tmp2); | |
| 876 | |
| 877 __ br(Assembler::always, /*annul*/false, Assembler::pt, restart); | |
| 878 __ delayed()->restore(); | |
| 879 } | |
| 880 break; | |
| 881 | |
| 882 case g1_post_barrier_slow_id: | |
| 883 { | |
| 884 BarrierSet* bs = Universe::heap()->barrier_set(); | |
| 885 if (bs->kind() != BarrierSet::G1SATBCTLogging) { | |
| 886 __ save_frame(0); | |
| 887 __ set((int)id, O1); | |
| 888 __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), I0); | |
| 889 __ should_not_reach_here(); | |
| 890 break; | |
| 891 } | |
| 892 | |
| 893 __ set_info("g1_post_barrier_slow_id", dont_gc_arguments); | |
| 894 | |
| 895 Register addr = G4; | |
| 896 Register cardtable = G5; | |
| 897 Register tmp = G1_scratch; | |
| 898 Register tmp2 = G3_scratch; | |
| 899 jbyte* byte_map_base = ((CardTableModRefBS*)bs)->byte_map_base; | |
| 900 | |
| 901 Label not_already_dirty, restart, refill; | |
| 902 | |
| 903 #ifdef _LP64 | |
| 904 __ srlx(addr, CardTableModRefBS::card_shift, addr); | |
| 905 #else | |
| 906 __ srl(addr, CardTableModRefBS::card_shift, addr); | |
| 907 #endif | |
| 908 | |
| 727 | 909 AddressLiteral rs(byte_map_base); |
| 910 __ set(rs, cardtable); // cardtable := <card table base> | |
| 342 | 911 __ ldub(addr, cardtable, tmp); // tmp := [addr + cardtable] |
| 912 | |
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913 assert(CardTableModRefBS::dirty_card_val() == 0, "otherwise check this code"); |
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914 __ cmp_and_br_short(tmp, G0, Assembler::notEqual, Assembler::pt, not_already_dirty); |
| 342 | 915 |
| 916 // We didn't take the branch, so we're already dirty: return. | |
| 917 // Use return-from-leaf | |
| 918 __ retl(); | |
| 919 __ delayed()->nop(); | |
| 920 | |
| 921 // Not dirty. | |
| 922 __ bind(not_already_dirty); | |
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923 |
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924 // Get cardtable + tmp into a reg by itself |
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925 __ add(addr, cardtable, tmp2); |
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926 |
| 342 | 927 // First, dirty it. |
| 928 __ stb(G0, tmp2, 0); // [cardPtr] := 0 (i.e., dirty). | |
| 929 | |
| 930 Register tmp3 = cardtable; | |
| 931 Register tmp4 = tmp; | |
| 932 | |
| 933 // these registers are now dead | |
| 934 addr = cardtable = tmp = noreg; | |
| 935 | |
| 936 int dirty_card_q_index_byte_offset = | |
| 937 in_bytes(JavaThread::dirty_card_queue_offset() + | |
| 938 PtrQueue::byte_offset_of_index()); | |
| 939 int dirty_card_q_buf_byte_offset = | |
| 940 in_bytes(JavaThread::dirty_card_queue_offset() + | |
| 941 PtrQueue::byte_offset_of_buf()); | |
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942 |
| 342 | 943 __ bind(restart); |
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944 |
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945 // Get the index into the update buffer. PtrQueue::_index is |
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946 // a size_t so ld_ptr is appropriate here. |
| 342 | 947 __ ld_ptr(G2_thread, dirty_card_q_index_byte_offset, tmp3); |
| 948 | |
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949 // index == 0? |
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950 __ cmp_and_brx_short(tmp3, G0, Assembler::equal, Assembler::pn, refill); |
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951 |
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952 __ ld_ptr(G2_thread, dirty_card_q_buf_byte_offset, tmp4); |
| 342 | 953 __ sub(tmp3, oopSize, tmp3); |
| 954 | |
| 955 __ st_ptr(tmp2, tmp4, tmp3); // [_buf + index] := <address_of_card> | |
| 956 // Use return-from-leaf | |
| 957 __ retl(); | |
| 958 __ delayed()->st_ptr(tmp3, G2_thread, dirty_card_q_index_byte_offset); | |
| 959 | |
| 960 __ bind(refill); | |
| 961 __ save_frame(0); | |
| 962 | |
| 963 __ mov(tmp2, L0); | |
| 964 __ mov(tmp3, L1); | |
| 965 __ mov(tmp4, L2); | |
| 966 | |
| 967 __ call_VM_leaf(L7_thread_cache, | |
| 968 CAST_FROM_FN_PTR(address, | |
| 969 DirtyCardQueueSet::handle_zero_index_for_thread), | |
| 970 G2_thread); | |
| 971 | |
| 972 __ mov(L0, tmp2); | |
| 973 __ mov(L1, tmp3); | |
| 974 __ mov(L2, tmp4); | |
| 975 | |
| 976 __ br(Assembler::always, /*annul*/false, Assembler::pt, restart); | |
| 977 __ delayed()->restore(); | |
| 978 } | |
| 979 break; | |
| 980 #endif // !SERIALGC | |
| 981 | |
| 0 | 982 default: |
| 983 { __ set_info("unimplemented entry", dont_gc_arguments); | |
| 984 __ save_frame(0); | |
| 985 __ set((int)id, O1); | |
| 986 __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), O1); | |
| 987 __ should_not_reach_here(); | |
| 988 } | |
| 989 break; | |
| 990 } | |
| 991 return oop_maps; | |
| 992 } | |
| 993 | |
| 994 | |
|
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995 OopMapSet* Runtime1::generate_handle_exception(StubID id, StubAssembler* sasm) { |
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996 __ block_comment("generate_handle_exception"); |
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997 |
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998 // Save registers, if required. |
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999 OopMapSet* oop_maps = new OopMapSet(); |
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1000 OopMap* oop_map = NULL; |
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1001 switch (id) { |
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1002 case forward_exception_id: |
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1003 // We're handling an exception in the context of a compiled frame. |
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1004 // The registers have been saved in the standard places. Perform |
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1005 // an exception lookup in the caller and dispatch to the handler |
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1006 // if found. Otherwise unwind and dispatch to the callers |
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1007 // exception handler. |
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1008 oop_map = generate_oop_map(sasm, true); |
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1009 |
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1010 // transfer the pending exception to the exception_oop |
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1011 __ ld_ptr(G2_thread, in_bytes(JavaThread::pending_exception_offset()), Oexception); |
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1012 __ ld_ptr(Oexception, 0, G0); |
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1013 __ st_ptr(G0, G2_thread, in_bytes(JavaThread::pending_exception_offset())); |
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1014 __ add(I7, frame::pc_return_offset, Oissuing_pc); |
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1015 break; |
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1016 case handle_exception_id: |
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1017 // At this point all registers MAY be live. |
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1018 oop_map = save_live_registers(sasm); |
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1019 __ mov(Oexception->after_save(), Oexception); |
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1020 __ mov(Oissuing_pc->after_save(), Oissuing_pc); |
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1021 break; |
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1022 case handle_exception_from_callee_id: |
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1023 // At this point all registers except exception oop (Oexception) |
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1024 // and exception pc (Oissuing_pc) are dead. |
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1025 oop_map = new OopMap(frame_size_in_bytes / sizeof(jint), 0); |
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1026 sasm->set_frame_size(frame_size_in_bytes / BytesPerWord); |
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1027 __ save_frame_c1(frame_size_in_bytes); |
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1028 __ mov(Oexception->after_save(), Oexception); |
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1029 __ mov(Oissuing_pc->after_save(), Oissuing_pc); |
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1030 break; |
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1031 default: ShouldNotReachHere(); |
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1032 } |
| 0 | 1033 |
| 1034 __ verify_not_null_oop(Oexception); | |
| 1035 | |
| 1036 // save the exception and issuing pc in the thread | |
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1037 __ st_ptr(Oexception, G2_thread, in_bytes(JavaThread::exception_oop_offset())); |
| 0 | 1038 __ st_ptr(Oissuing_pc, G2_thread, in_bytes(JavaThread::exception_pc_offset())); |
| 1039 | |
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1040 // use the throwing pc as the return address to lookup (has bci & oop map) |
| 0 | 1041 __ mov(Oissuing_pc, I7); |
| 1042 __ sub(I7, frame::pc_return_offset, I7); | |
| 1043 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, exception_handler_for_pc)); | |
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1044 oop_maps->add_gc_map(call_offset, oop_map); |
| 0 | 1045 |
| 1046 // Note: if nmethod has been deoptimized then regardless of | |
| 1047 // whether it had a handler or not we will deoptimize | |
| 1048 // by entering the deopt blob with a pending exception. | |
| 1049 | |
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1050 // Restore the registers that were saved at the beginning, remove |
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1051 // the frame and jump to the exception handler. |
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1052 switch (id) { |
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1053 case forward_exception_id: |
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1054 case handle_exception_id: |
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1055 restore_live_registers(sasm); |
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1056 __ jmp(O0, 0); |
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1057 __ delayed()->restore(); |
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1058 break; |
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1059 case handle_exception_from_callee_id: |
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1060 // Restore SP from L7 if the exception PC is a method handle call site. |
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1061 __ mov(O0, G5); // Save the target address. |
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1062 __ lduw(Address(G2_thread, JavaThread::is_method_handle_return_offset()), L0); |
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1063 __ tst(L0); // Condition codes are preserved over the restore. |
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1064 __ restore(); |
| 0 | 1065 |
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1066 __ jmp(G5, 0); // jump to the exception handler |
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1067 __ delayed()->movcc(Assembler::notZero, false, Assembler::icc, L7_mh_SP_save, SP); // Restore SP if required. |
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1068 break; |
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1069 default: ShouldNotReachHere(); |
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1070 } |
| 0 | 1071 |
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1072 return oop_maps; |
| 0 | 1073 } |
| 1074 | |
| 1075 | |
| 1076 #undef __ | |
| 1077 | |
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1078 const char *Runtime1::pd_name_for_address(address entry) { |
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1079 return "<unknown function>"; |
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1080 } |