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annotate src/cpu/sparc/vm/c1_Runtime1_sparc.cpp @ 5313:be1a8ff480db
Visualizer: display long properties correctly, "!InstanceOf" for negated InstanceOfNodes
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Fri, 27 Apr 2012 11:16:17 +0200 |
parents | 22cee0ee8927 |
children | da91efe96a93 |
rev | line source |
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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 |
2321
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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 | |
1681
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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 } |