0
|
1 /*
|
|
2 * Copyright 1999-2007 Sun Microsystems, Inc. All Rights Reserved.
|
|
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 *
|
|
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
|
20 * CA 95054 USA or visit www.sun.com if you need additional information or
|
|
21 * have any questions.
|
|
22 *
|
|
23 */
|
|
24
|
|
25 #include "incls/_precompiled.incl"
|
|
26 #include "incls/_c1_Runtime1_sparc.cpp.incl"
|
|
27
|
|
28 // Implementation of StubAssembler
|
|
29
|
|
30 int StubAssembler::call_RT(Register oop_result1, Register oop_result2, address entry_point, int number_of_arguments) {
|
|
31 // for sparc changing the number of arguments doesn't change
|
|
32 // anything about the frame size so we'll always lie and claim that
|
|
33 // we are only passing 1 argument.
|
|
34 set_num_rt_args(1);
|
|
35
|
|
36 assert_not_delayed();
|
|
37 // bang stack before going to runtime
|
|
38 set(-os::vm_page_size() + STACK_BIAS, G3_scratch);
|
|
39 st(G0, SP, G3_scratch);
|
|
40
|
|
41 // debugging support
|
|
42 assert(number_of_arguments >= 0 , "cannot have negative number of arguments");
|
|
43
|
|
44 set_last_Java_frame(SP, noreg);
|
|
45 if (VerifyThread) mov(G2_thread, O0); // about to be smashed; pass early
|
|
46 save_thread(L7_thread_cache);
|
|
47 // do the call
|
|
48 call(entry_point, relocInfo::runtime_call_type);
|
|
49 if (!VerifyThread) {
|
|
50 delayed()->mov(G2_thread, O0); // pass thread as first argument
|
|
51 } else {
|
|
52 delayed()->nop(); // (thread already passed)
|
|
53 }
|
|
54 int call_offset = offset(); // offset of return address
|
|
55 restore_thread(L7_thread_cache);
|
|
56 reset_last_Java_frame();
|
|
57
|
|
58 // check for pending exceptions
|
|
59 { Label L;
|
|
60 Address exception_addr(G2_thread, 0, in_bytes(Thread::pending_exception_offset()));
|
|
61 ld_ptr(exception_addr, Gtemp);
|
|
62 br_null(Gtemp, false, pt, L);
|
|
63 delayed()->nop();
|
|
64 Address vm_result_addr(G2_thread, 0, in_bytes(JavaThread::vm_result_offset()));
|
|
65 st_ptr(G0, vm_result_addr);
|
|
66 Address vm_result_addr_2(G2_thread, 0, in_bytes(JavaThread::vm_result_2_offset()));
|
|
67 st_ptr(G0, vm_result_addr_2);
|
|
68
|
|
69 if (frame_size() == no_frame_size) {
|
|
70 // we use O7 linkage so that forward_exception_entry has the issuing PC
|
|
71 call(StubRoutines::forward_exception_entry(), relocInfo::runtime_call_type);
|
|
72 delayed()->restore();
|
|
73 } else if (_stub_id == Runtime1::forward_exception_id) {
|
|
74 should_not_reach_here();
|
|
75 } else {
|
|
76 Address exc(G4, Runtime1::entry_for(Runtime1::forward_exception_id));
|
|
77 jump_to(exc, 0);
|
|
78 delayed()->nop();
|
|
79 }
|
|
80 bind(L);
|
|
81 }
|
|
82
|
|
83 // get oop result if there is one and reset the value in the thread
|
|
84 if (oop_result1->is_valid()) { // get oop result if there is one and reset it in the thread
|
|
85 get_vm_result (oop_result1);
|
|
86 } else {
|
|
87 // be a little paranoid and clear the result
|
|
88 Address vm_result_addr(G2_thread, 0, in_bytes(JavaThread::vm_result_offset()));
|
|
89 st_ptr(G0, vm_result_addr);
|
|
90 }
|
|
91
|
|
92 if (oop_result2->is_valid()) {
|
|
93 get_vm_result_2(oop_result2);
|
|
94 } else {
|
|
95 // be a little paranoid and clear the result
|
|
96 Address vm_result_addr_2(G2_thread, 0, in_bytes(JavaThread::vm_result_2_offset()));
|
|
97 st_ptr(G0, vm_result_addr_2);
|
|
98 }
|
|
99
|
|
100 return call_offset;
|
|
101 }
|
|
102
|
|
103
|
|
104 int StubAssembler::call_RT(Register oop_result1, Register oop_result2, address entry, Register arg1) {
|
|
105 // O0 is reserved for the thread
|
|
106 mov(arg1, O1);
|
|
107 return call_RT(oop_result1, oop_result2, entry, 1);
|
|
108 }
|
|
109
|
|
110
|
|
111 int StubAssembler::call_RT(Register oop_result1, Register oop_result2, address entry, Register arg1, Register arg2) {
|
|
112 // O0 is reserved for the thread
|
|
113 mov(arg1, O1);
|
|
114 mov(arg2, O2); assert(arg2 != O1, "smashed argument");
|
|
115 return call_RT(oop_result1, oop_result2, entry, 2);
|
|
116 }
|
|
117
|
|
118
|
|
119 int StubAssembler::call_RT(Register oop_result1, Register oop_result2, address entry, Register arg1, Register arg2, Register arg3) {
|
|
120 // O0 is reserved for the thread
|
|
121 mov(arg1, O1);
|
|
122 mov(arg2, O2); assert(arg2 != O1, "smashed argument");
|
|
123 mov(arg3, O3); assert(arg3 != O1 && arg3 != O2, "smashed argument");
|
|
124 return call_RT(oop_result1, oop_result2, entry, 3);
|
|
125 }
|
|
126
|
|
127
|
|
128 // Implementation of Runtime1
|
|
129
|
|
130 #define __ sasm->
|
|
131
|
|
132 static int cpu_reg_save_offsets[FrameMap::nof_cpu_regs];
|
|
133 static int fpu_reg_save_offsets[FrameMap::nof_fpu_regs];
|
|
134 static int reg_save_size_in_words;
|
|
135 static int frame_size_in_bytes = -1;
|
|
136
|
|
137 static OopMap* generate_oop_map(StubAssembler* sasm, bool save_fpu_registers) {
|
|
138 assert(frame_size_in_bytes == __ total_frame_size_in_bytes(reg_save_size_in_words),
|
|
139 " mismatch in calculation");
|
|
140 sasm->set_frame_size(frame_size_in_bytes / BytesPerWord);
|
|
141 int frame_size_in_slots = frame_size_in_bytes / sizeof(jint);
|
|
142 OopMap* oop_map = new OopMap(frame_size_in_slots, 0);
|
|
143
|
|
144 int i;
|
|
145 for (i = 0; i < FrameMap::nof_cpu_regs; i++) {
|
|
146 Register r = as_Register(i);
|
|
147 if (r == G1 || r == G3 || r == G4 || r == G5) {
|
|
148 int sp_offset = cpu_reg_save_offsets[i];
|
|
149 oop_map->set_callee_saved(VMRegImpl::stack2reg(sp_offset),
|
|
150 r->as_VMReg());
|
|
151 }
|
|
152 }
|
|
153
|
|
154 if (save_fpu_registers) {
|
|
155 for (i = 0; i < FrameMap::nof_fpu_regs; i++) {
|
|
156 FloatRegister r = as_FloatRegister(i);
|
|
157 int sp_offset = fpu_reg_save_offsets[i];
|
|
158 oop_map->set_callee_saved(VMRegImpl::stack2reg(sp_offset),
|
|
159 r->as_VMReg());
|
|
160 }
|
|
161 }
|
|
162 return oop_map;
|
|
163 }
|
|
164
|
|
165 static OopMap* save_live_registers(StubAssembler* sasm, bool save_fpu_registers = true) {
|
|
166 assert(frame_size_in_bytes == __ total_frame_size_in_bytes(reg_save_size_in_words),
|
|
167 " mismatch in calculation");
|
|
168 __ save_frame_c1(frame_size_in_bytes);
|
|
169 sasm->set_frame_size(frame_size_in_bytes / BytesPerWord);
|
|
170
|
|
171 // Record volatile registers as callee-save values in an OopMap so their save locations will be
|
|
172 // propagated to the caller frame's RegisterMap during StackFrameStream construction (needed for
|
|
173 // deoptimization; see compiledVFrame::create_stack_value). The caller's I, L and O registers
|
|
174 // are saved in register windows - I's and L's in the caller's frame and O's in the stub frame
|
|
175 // (as the stub's I's) when the runtime routine called by the stub creates its frame.
|
|
176 // OopMap frame sizes are in c2 stack slot sizes (sizeof(jint))
|
|
177
|
|
178 int i;
|
|
179 for (i = 0; i < FrameMap::nof_cpu_regs; i++) {
|
|
180 Register r = as_Register(i);
|
|
181 if (r == G1 || r == G3 || r == G4 || r == G5) {
|
|
182 int sp_offset = cpu_reg_save_offsets[i];
|
|
183 __ st_ptr(r, SP, (sp_offset * BytesPerWord) + STACK_BIAS);
|
|
184 }
|
|
185 }
|
|
186
|
|
187 if (save_fpu_registers) {
|
|
188 for (i = 0; i < FrameMap::nof_fpu_regs; i++) {
|
|
189 FloatRegister r = as_FloatRegister(i);
|
|
190 int sp_offset = fpu_reg_save_offsets[i];
|
|
191 __ stf(FloatRegisterImpl::S, r, SP, (sp_offset * BytesPerWord) + STACK_BIAS);
|
|
192 }
|
|
193 }
|
|
194
|
|
195 return generate_oop_map(sasm, save_fpu_registers);
|
|
196 }
|
|
197
|
|
198 static void restore_live_registers(StubAssembler* sasm, bool restore_fpu_registers = true) {
|
|
199 for (int i = 0; i < FrameMap::nof_cpu_regs; i++) {
|
|
200 Register r = as_Register(i);
|
|
201 if (r == G1 || r == G3 || r == G4 || r == G5) {
|
|
202 __ ld_ptr(SP, (cpu_reg_save_offsets[i] * BytesPerWord) + STACK_BIAS, r);
|
|
203 }
|
|
204 }
|
|
205
|
|
206 if (restore_fpu_registers) {
|
|
207 for (int i = 0; i < FrameMap::nof_fpu_regs; i++) {
|
|
208 FloatRegister r = as_FloatRegister(i);
|
|
209 __ ldf(FloatRegisterImpl::S, SP, (fpu_reg_save_offsets[i] * BytesPerWord) + STACK_BIAS, r);
|
|
210 }
|
|
211 }
|
|
212 }
|
|
213
|
|
214
|
|
215 void Runtime1::initialize_pd() {
|
|
216 // compute word offsets from SP at which live (non-windowed) registers are captured by stub routines
|
|
217 //
|
|
218 // A stub routine will have a frame that is at least large enough to hold
|
|
219 // a register window save area (obviously) and the volatile g registers
|
|
220 // and floating registers. A user of save_live_registers can have a frame
|
|
221 // that has more scratch area in it (although typically they will use L-regs).
|
|
222 // in that case the frame will look like this (stack growing down)
|
|
223 //
|
|
224 // FP -> | |
|
|
225 // | scratch mem |
|
|
226 // | " " |
|
|
227 // --------------
|
|
228 // | float regs |
|
|
229 // | " " |
|
|
230 // ---------------
|
|
231 // | G regs |
|
|
232 // | " " |
|
|
233 // ---------------
|
|
234 // | abi reg. |
|
|
235 // | window save |
|
|
236 // | area |
|
|
237 // SP -> ---------------
|
|
238 //
|
|
239 int i;
|
|
240 int sp_offset = round_to(frame::register_save_words, 2); // start doubleword aligned
|
|
241
|
|
242 // only G int registers are saved explicitly; others are found in register windows
|
|
243 for (i = 0; i < FrameMap::nof_cpu_regs; i++) {
|
|
244 Register r = as_Register(i);
|
|
245 if (r == G1 || r == G3 || r == G4 || r == G5) {
|
|
246 cpu_reg_save_offsets[i] = sp_offset;
|
|
247 sp_offset++;
|
|
248 }
|
|
249 }
|
|
250
|
|
251 // all float registers are saved explicitly
|
|
252 assert(FrameMap::nof_fpu_regs == 32, "double registers not handled here");
|
|
253 for (i = 0; i < FrameMap::nof_fpu_regs; i++) {
|
|
254 fpu_reg_save_offsets[i] = sp_offset;
|
|
255 sp_offset++;
|
|
256 }
|
|
257 reg_save_size_in_words = sp_offset - frame::memory_parameter_word_sp_offset;
|
|
258 // this should match assembler::total_frame_size_in_bytes, which
|
|
259 // isn't callable from this context. It's checked by an assert when
|
|
260 // it's used though.
|
|
261 frame_size_in_bytes = align_size_up(sp_offset * wordSize, 8);
|
|
262 }
|
|
263
|
|
264
|
|
265 OopMapSet* Runtime1::generate_exception_throw(StubAssembler* sasm, address target, bool has_argument) {
|
|
266 // make a frame and preserve the caller's caller-save registers
|
|
267 OopMap* oop_map = save_live_registers(sasm);
|
|
268 int call_offset;
|
|
269 if (!has_argument) {
|
|
270 call_offset = __ call_RT(noreg, noreg, target);
|
|
271 } else {
|
|
272 call_offset = __ call_RT(noreg, noreg, target, G4);
|
|
273 }
|
|
274 OopMapSet* oop_maps = new OopMapSet();
|
|
275 oop_maps->add_gc_map(call_offset, oop_map);
|
|
276
|
|
277 __ should_not_reach_here();
|
|
278 return oop_maps;
|
|
279 }
|
|
280
|
|
281
|
|
282 OopMapSet* Runtime1::generate_stub_call(StubAssembler* sasm, Register result, address target,
|
|
283 Register arg1, Register arg2, Register arg3) {
|
|
284 // make a frame and preserve the caller's caller-save registers
|
|
285 OopMap* oop_map = save_live_registers(sasm);
|
|
286
|
|
287 int call_offset;
|
|
288 if (arg1 == noreg) {
|
|
289 call_offset = __ call_RT(result, noreg, target);
|
|
290 } else if (arg2 == noreg) {
|
|
291 call_offset = __ call_RT(result, noreg, target, arg1);
|
|
292 } else if (arg3 == noreg) {
|
|
293 call_offset = __ call_RT(result, noreg, target, arg1, arg2);
|
|
294 } else {
|
|
295 call_offset = __ call_RT(result, noreg, target, arg1, arg2, arg3);
|
|
296 }
|
|
297 OopMapSet* oop_maps = NULL;
|
|
298
|
|
299 oop_maps = new OopMapSet();
|
|
300 oop_maps->add_gc_map(call_offset, oop_map);
|
|
301 restore_live_registers(sasm);
|
|
302
|
|
303 __ ret();
|
|
304 __ delayed()->restore();
|
|
305
|
|
306 return oop_maps;
|
|
307 }
|
|
308
|
|
309
|
|
310 OopMapSet* Runtime1::generate_patching(StubAssembler* sasm, address target) {
|
|
311 // make a frame and preserve the caller's caller-save registers
|
|
312 OopMap* oop_map = save_live_registers(sasm);
|
|
313
|
|
314 // call the runtime patching routine, returns non-zero if nmethod got deopted.
|
|
315 int call_offset = __ call_RT(noreg, noreg, target);
|
|
316 OopMapSet* oop_maps = new OopMapSet();
|
|
317 oop_maps->add_gc_map(call_offset, oop_map);
|
|
318
|
|
319 // re-execute the patched instruction or, if the nmethod was deoptmized, return to the
|
|
320 // deoptimization handler entry that will cause re-execution of the current bytecode
|
|
321 DeoptimizationBlob* deopt_blob = SharedRuntime::deopt_blob();
|
|
322 assert(deopt_blob != NULL, "deoptimization blob must have been created");
|
|
323
|
|
324 Label no_deopt;
|
|
325 __ tst(O0);
|
|
326 __ brx(Assembler::equal, false, Assembler::pt, no_deopt);
|
|
327 __ delayed()->nop();
|
|
328
|
|
329 // return to the deoptimization handler entry for unpacking and rexecute
|
|
330 // if we simply returned the we'd deopt as if any call we patched had just
|
|
331 // returned.
|
|
332
|
|
333 restore_live_registers(sasm);
|
|
334 __ restore();
|
|
335 __ br(Assembler::always, false, Assembler::pt, deopt_blob->unpack_with_reexecution(), relocInfo::runtime_call_type);
|
|
336 __ delayed()->nop();
|
|
337
|
|
338 __ bind(no_deopt);
|
|
339 restore_live_registers(sasm);
|
|
340 __ ret();
|
|
341 __ delayed()->restore();
|
|
342
|
|
343 return oop_maps;
|
|
344 }
|
|
345
|
|
346 OopMapSet* Runtime1::generate_code_for(StubID id, StubAssembler* sasm) {
|
|
347
|
|
348 OopMapSet* oop_maps = NULL;
|
|
349 // for better readability
|
|
350 const bool must_gc_arguments = true;
|
|
351 const bool dont_gc_arguments = false;
|
|
352
|
|
353 // stub code & info for the different stubs
|
|
354 switch (id) {
|
|
355 case forward_exception_id:
|
|
356 {
|
|
357 // we're handling an exception in the context of a compiled
|
|
358 // frame. The registers have been saved in the standard
|
|
359 // places. Perform an exception lookup in the caller and
|
|
360 // dispatch to the handler if found. Otherwise unwind and
|
|
361 // dispatch to the callers exception handler.
|
|
362
|
|
363 oop_maps = new OopMapSet();
|
|
364 OopMap* oop_map = generate_oop_map(sasm, true);
|
|
365
|
|
366 // transfer the pending exception to the exception_oop
|
|
367 __ ld_ptr(G2_thread, in_bytes(JavaThread::pending_exception_offset()), Oexception);
|
|
368 __ ld_ptr(Oexception, 0, G0);
|
|
369 __ st_ptr(G0, G2_thread, in_bytes(JavaThread::pending_exception_offset()));
|
|
370 __ add(I7, frame::pc_return_offset, Oissuing_pc);
|
|
371
|
|
372 generate_handle_exception(sasm, oop_maps, oop_map);
|
|
373 __ should_not_reach_here();
|
|
374 }
|
|
375 break;
|
|
376
|
|
377 case new_instance_id:
|
|
378 case fast_new_instance_id:
|
|
379 case fast_new_instance_init_check_id:
|
|
380 {
|
|
381 Register G5_klass = G5; // Incoming
|
|
382 Register O0_obj = O0; // Outgoing
|
|
383
|
|
384 if (id == new_instance_id) {
|
|
385 __ set_info("new_instance", dont_gc_arguments);
|
|
386 } else if (id == fast_new_instance_id) {
|
|
387 __ set_info("fast new_instance", dont_gc_arguments);
|
|
388 } else {
|
|
389 assert(id == fast_new_instance_init_check_id, "bad StubID");
|
|
390 __ set_info("fast new_instance init check", dont_gc_arguments);
|
|
391 }
|
|
392
|
|
393 if ((id == fast_new_instance_id || id == fast_new_instance_init_check_id) &&
|
|
394 UseTLAB && FastTLABRefill) {
|
|
395 Label slow_path;
|
|
396 Register G1_obj_size = G1;
|
|
397 Register G3_t1 = G3;
|
|
398 Register G4_t2 = G4;
|
|
399 assert_different_registers(G5_klass, G1_obj_size, G3_t1, G4_t2);
|
|
400
|
|
401 // Push a frame since we may do dtrace notification for the
|
|
402 // allocation which requires calling out and we don't want
|
|
403 // to stomp the real return address.
|
|
404 __ save_frame(0);
|
|
405
|
|
406 if (id == fast_new_instance_init_check_id) {
|
|
407 // make sure the klass is initialized
|
|
408 __ ld(G5_klass, instanceKlass::init_state_offset_in_bytes() + sizeof(oopDesc), G3_t1);
|
|
409 __ cmp(G3_t1, instanceKlass::fully_initialized);
|
|
410 __ br(Assembler::notEqual, false, Assembler::pn, slow_path);
|
|
411 __ delayed()->nop();
|
|
412 }
|
|
413 #ifdef ASSERT
|
|
414 // assert object can be fast path allocated
|
|
415 {
|
|
416 Label ok, not_ok;
|
|
417 __ ld(G5_klass, Klass::layout_helper_offset_in_bytes() + sizeof(oopDesc), G1_obj_size);
|
|
418 __ cmp(G1_obj_size, 0); // make sure it's an instance (LH > 0)
|
|
419 __ br(Assembler::lessEqual, false, Assembler::pn, not_ok);
|
|
420 __ delayed()->nop();
|
|
421 __ btst(Klass::_lh_instance_slow_path_bit, G1_obj_size);
|
|
422 __ br(Assembler::zero, false, Assembler::pn, ok);
|
|
423 __ delayed()->nop();
|
|
424 __ bind(not_ok);
|
|
425 __ stop("assert(can be fast path allocated)");
|
|
426 __ should_not_reach_here();
|
|
427 __ bind(ok);
|
|
428 }
|
|
429 #endif // ASSERT
|
|
430 // if we got here then the TLAB allocation failed, so try
|
|
431 // refilling the TLAB or allocating directly from eden.
|
|
432 Label retry_tlab, try_eden;
|
|
433 __ tlab_refill(retry_tlab, try_eden, slow_path); // preserves G5_klass
|
|
434
|
|
435 __ bind(retry_tlab);
|
|
436
|
|
437 // get the instance size
|
|
438 __ ld(G5_klass, klassOopDesc::header_size() * HeapWordSize + Klass::layout_helper_offset_in_bytes(), G1_obj_size);
|
|
439 __ tlab_allocate(O0_obj, G1_obj_size, 0, G3_t1, slow_path);
|
|
440 __ initialize_object(O0_obj, G5_klass, G1_obj_size, 0, G3_t1, G4_t2);
|
|
441 __ verify_oop(O0_obj);
|
|
442 __ mov(O0, I0);
|
|
443 __ ret();
|
|
444 __ delayed()->restore();
|
|
445
|
|
446 __ bind(try_eden);
|
|
447 // get the instance size
|
|
448 __ ld(G5_klass, klassOopDesc::header_size() * HeapWordSize + Klass::layout_helper_offset_in_bytes(), G1_obj_size);
|
|
449 __ eden_allocate(O0_obj, G1_obj_size, 0, G3_t1, G4_t2, slow_path);
|
|
450 __ initialize_object(O0_obj, G5_klass, G1_obj_size, 0, G3_t1, G4_t2);
|
|
451 __ verify_oop(O0_obj);
|
|
452 __ mov(O0, I0);
|
|
453 __ ret();
|
|
454 __ delayed()->restore();
|
|
455
|
|
456 __ bind(slow_path);
|
|
457
|
|
458 // pop this frame so generate_stub_call can push it's own
|
|
459 __ restore();
|
|
460 }
|
|
461
|
|
462 oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_instance), G5_klass);
|
|
463 // I0->O0: new instance
|
|
464 }
|
|
465
|
|
466 break;
|
|
467
|
|
468 #ifdef TIERED
|
|
469 case counter_overflow_id:
|
|
470 // G4 contains bci
|
|
471 oop_maps = generate_stub_call(sasm, noreg, CAST_FROM_FN_PTR(address, counter_overflow), G4);
|
|
472 break;
|
|
473 #endif // TIERED
|
|
474
|
|
475 case new_type_array_id:
|
|
476 case new_object_array_id:
|
|
477 {
|
|
478 Register G5_klass = G5; // Incoming
|
|
479 Register G4_length = G4; // Incoming
|
|
480 Register O0_obj = O0; // Outgoing
|
|
481
|
|
482 Address klass_lh(G5_klass, 0, ((klassOopDesc::header_size() * HeapWordSize)
|
|
483 + Klass::layout_helper_offset_in_bytes()));
|
|
484 assert(Klass::_lh_header_size_shift % BitsPerByte == 0, "bytewise");
|
|
485 assert(Klass::_lh_header_size_mask == 0xFF, "bytewise");
|
|
486 // Use this offset to pick out an individual byte of the layout_helper:
|
|
487 const int klass_lh_header_size_offset = ((BytesPerInt - 1) // 3 - 2 selects byte {0,1,0,0}
|
|
488 - Klass::_lh_header_size_shift / BitsPerByte);
|
|
489
|
|
490 if (id == new_type_array_id) {
|
|
491 __ set_info("new_type_array", dont_gc_arguments);
|
|
492 } else {
|
|
493 __ set_info("new_object_array", dont_gc_arguments);
|
|
494 }
|
|
495
|
|
496 #ifdef ASSERT
|
|
497 // assert object type is really an array of the proper kind
|
|
498 {
|
|
499 Label ok;
|
|
500 Register G3_t1 = G3;
|
|
501 __ ld(klass_lh, G3_t1);
|
|
502 __ sra(G3_t1, Klass::_lh_array_tag_shift, G3_t1);
|
|
503 int tag = ((id == new_type_array_id)
|
|
504 ? Klass::_lh_array_tag_type_value
|
|
505 : Klass::_lh_array_tag_obj_value);
|
|
506 __ cmp(G3_t1, tag);
|
|
507 __ brx(Assembler::equal, false, Assembler::pt, ok);
|
|
508 __ delayed()->nop();
|
|
509 __ stop("assert(is an array klass)");
|
|
510 __ should_not_reach_here();
|
|
511 __ bind(ok);
|
|
512 }
|
|
513 #endif // ASSERT
|
|
514
|
|
515 if (UseTLAB && FastTLABRefill) {
|
|
516 Label slow_path;
|
|
517 Register G1_arr_size = G1;
|
|
518 Register G3_t1 = G3;
|
|
519 Register O1_t2 = O1;
|
|
520 assert_different_registers(G5_klass, G4_length, G1_arr_size, G3_t1, O1_t2);
|
|
521
|
|
522 // check that array length is small enough for fast path
|
|
523 __ set(C1_MacroAssembler::max_array_allocation_length, G3_t1);
|
|
524 __ cmp(G4_length, G3_t1);
|
|
525 __ br(Assembler::greaterUnsigned, false, Assembler::pn, slow_path);
|
|
526 __ delayed()->nop();
|
|
527
|
|
528 // if we got here then the TLAB allocation failed, so try
|
|
529 // refilling the TLAB or allocating directly from eden.
|
|
530 Label retry_tlab, try_eden;
|
|
531 __ tlab_refill(retry_tlab, try_eden, slow_path); // preserves G4_length and G5_klass
|
|
532
|
|
533 __ bind(retry_tlab);
|
|
534
|
|
535 // get the allocation size: (length << (layout_helper & 0x1F)) + header_size
|
|
536 __ ld(klass_lh, G3_t1);
|
|
537 __ sll(G4_length, G3_t1, G1_arr_size);
|
|
538 __ srl(G3_t1, Klass::_lh_header_size_shift, G3_t1);
|
|
539 __ and3(G3_t1, Klass::_lh_header_size_mask, G3_t1);
|
|
540 __ add(G1_arr_size, G3_t1, G1_arr_size);
|
|
541 __ add(G1_arr_size, MinObjAlignmentInBytesMask, G1_arr_size); // align up
|
|
542 __ and3(G1_arr_size, ~MinObjAlignmentInBytesMask, G1_arr_size);
|
|
543
|
|
544 __ tlab_allocate(O0_obj, G1_arr_size, 0, G3_t1, slow_path); // preserves G1_arr_size
|
|
545
|
|
546 __ initialize_header(O0_obj, G5_klass, G4_length, G3_t1, O1_t2);
|
|
547 __ ldub(klass_lh, G3_t1, klass_lh_header_size_offset);
|
|
548 __ sub(G1_arr_size, G3_t1, O1_t2); // body length
|
|
549 __ add(O0_obj, G3_t1, G3_t1); // body start
|
|
550 __ initialize_body(G3_t1, O1_t2);
|
|
551 __ verify_oop(O0_obj);
|
|
552 __ retl();
|
|
553 __ delayed()->nop();
|
|
554
|
|
555 __ bind(try_eden);
|
|
556 // get the allocation size: (length << (layout_helper & 0x1F)) + header_size
|
|
557 __ ld(klass_lh, G3_t1);
|
|
558 __ sll(G4_length, G3_t1, G1_arr_size);
|
|
559 __ srl(G3_t1, Klass::_lh_header_size_shift, G3_t1);
|
|
560 __ and3(G3_t1, Klass::_lh_header_size_mask, G3_t1);
|
|
561 __ add(G1_arr_size, G3_t1, G1_arr_size);
|
|
562 __ add(G1_arr_size, MinObjAlignmentInBytesMask, G1_arr_size);
|
|
563 __ and3(G1_arr_size, ~MinObjAlignmentInBytesMask, G1_arr_size);
|
|
564
|
|
565 __ eden_allocate(O0_obj, G1_arr_size, 0, G3_t1, O1_t2, slow_path); // preserves G1_arr_size
|
|
566
|
|
567 __ initialize_header(O0_obj, G5_klass, G4_length, G3_t1, O1_t2);
|
|
568 __ ldub(klass_lh, G3_t1, klass_lh_header_size_offset);
|
|
569 __ sub(G1_arr_size, G3_t1, O1_t2); // body length
|
|
570 __ add(O0_obj, G3_t1, G3_t1); // body start
|
|
571 __ initialize_body(G3_t1, O1_t2);
|
|
572 __ verify_oop(O0_obj);
|
|
573 __ retl();
|
|
574 __ delayed()->nop();
|
|
575
|
|
576 __ bind(slow_path);
|
|
577 }
|
|
578
|
|
579 if (id == new_type_array_id) {
|
|
580 oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_type_array), G5_klass, G4_length);
|
|
581 } else {
|
|
582 oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_object_array), G5_klass, G4_length);
|
|
583 }
|
|
584 // I0 -> O0: new array
|
|
585 }
|
|
586 break;
|
|
587
|
|
588 case new_multi_array_id:
|
|
589 { // O0: klass
|
|
590 // O1: rank
|
|
591 // O2: address of 1st dimension
|
|
592 __ set_info("new_multi_array", dont_gc_arguments);
|
|
593 oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_multi_array), I0, I1, I2);
|
|
594 // I0 -> O0: new multi array
|
|
595 }
|
|
596 break;
|
|
597
|
|
598 case register_finalizer_id:
|
|
599 {
|
|
600 __ set_info("register_finalizer", dont_gc_arguments);
|
|
601
|
|
602 // load the klass and check the has finalizer flag
|
|
603 Label register_finalizer;
|
|
604 Register t = O1;
|
|
605 __ ld_ptr(O0, oopDesc::klass_offset_in_bytes(), t);
|
|
606 __ ld(t, Klass::access_flags_offset_in_bytes() + sizeof(oopDesc), t);
|
|
607 __ set(JVM_ACC_HAS_FINALIZER, G3);
|
|
608 __ andcc(G3, t, G0);
|
|
609 __ br(Assembler::notZero, false, Assembler::pt, register_finalizer);
|
|
610 __ delayed()->nop();
|
|
611
|
|
612 // do a leaf return
|
|
613 __ retl();
|
|
614 __ delayed()->nop();
|
|
615
|
|
616 __ bind(register_finalizer);
|
|
617 OopMap* oop_map = save_live_registers(sasm);
|
|
618 int call_offset = __ call_RT(noreg, noreg,
|
|
619 CAST_FROM_FN_PTR(address, SharedRuntime::register_finalizer), I0);
|
|
620 oop_maps = new OopMapSet();
|
|
621 oop_maps->add_gc_map(call_offset, oop_map);
|
|
622
|
|
623 // Now restore all the live registers
|
|
624 restore_live_registers(sasm);
|
|
625
|
|
626 __ ret();
|
|
627 __ delayed()->restore();
|
|
628 }
|
|
629 break;
|
|
630
|
|
631 case throw_range_check_failed_id:
|
|
632 { __ set_info("range_check_failed", dont_gc_arguments); // arguments will be discarded
|
|
633 // G4: index
|
|
634 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_range_check_exception), true);
|
|
635 }
|
|
636 break;
|
|
637
|
|
638 case throw_index_exception_id:
|
|
639 { __ set_info("index_range_check_failed", dont_gc_arguments); // arguments will be discarded
|
|
640 // G4: index
|
|
641 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_index_exception), true);
|
|
642 }
|
|
643 break;
|
|
644
|
|
645 case throw_div0_exception_id:
|
|
646 { __ set_info("throw_div0_exception", dont_gc_arguments);
|
|
647 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_div0_exception), false);
|
|
648 }
|
|
649 break;
|
|
650
|
|
651 case throw_null_pointer_exception_id:
|
|
652 { __ set_info("throw_null_pointer_exception", dont_gc_arguments);
|
|
653 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_null_pointer_exception), false);
|
|
654 }
|
|
655 break;
|
|
656
|
|
657 case handle_exception_id:
|
|
658 {
|
|
659 __ set_info("handle_exception", dont_gc_arguments);
|
|
660 // make a frame and preserve the caller's caller-save registers
|
|
661
|
|
662 oop_maps = new OopMapSet();
|
|
663 OopMap* oop_map = save_live_registers(sasm);
|
|
664 __ mov(Oexception->after_save(), Oexception);
|
|
665 __ mov(Oissuing_pc->after_save(), Oissuing_pc);
|
|
666 generate_handle_exception(sasm, oop_maps, oop_map);
|
|
667 }
|
|
668 break;
|
|
669
|
|
670 case unwind_exception_id:
|
|
671 {
|
|
672 // O0: exception
|
|
673 // I7: address of call to this method
|
|
674
|
|
675 __ set_info("unwind_exception", dont_gc_arguments);
|
|
676 __ mov(Oexception, Oexception->after_save());
|
|
677 __ add(I7, frame::pc_return_offset, Oissuing_pc->after_save());
|
|
678
|
|
679 __ call_VM_leaf(L7_thread_cache, CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address),
|
|
680 Oissuing_pc->after_save());
|
|
681 __ verify_not_null_oop(Oexception->after_save());
|
|
682 __ jmp(O0, 0);
|
|
683 __ delayed()->restore();
|
|
684 }
|
|
685 break;
|
|
686
|
|
687 case throw_array_store_exception_id:
|
|
688 {
|
|
689 __ set_info("throw_array_store_exception", dont_gc_arguments);
|
|
690 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_array_store_exception), false);
|
|
691 }
|
|
692 break;
|
|
693
|
|
694 case throw_class_cast_exception_id:
|
|
695 {
|
|
696 // G4: object
|
|
697 __ set_info("throw_class_cast_exception", dont_gc_arguments);
|
|
698 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_class_cast_exception), true);
|
|
699 }
|
|
700 break;
|
|
701
|
|
702 case throw_incompatible_class_change_error_id:
|
|
703 {
|
|
704 __ set_info("throw_incompatible_class_cast_exception", dont_gc_arguments);
|
|
705 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_incompatible_class_change_error), false);
|
|
706 }
|
|
707 break;
|
|
708
|
|
709 case slow_subtype_check_id:
|
|
710 { // Support for uint StubRoutine::partial_subtype_check( Klass sub, Klass super );
|
|
711 // Arguments :
|
|
712 //
|
|
713 // ret : G3
|
|
714 // sub : G3, argument, destroyed
|
|
715 // super: G1, argument, not changed
|
|
716 // raddr: O7, blown by call
|
|
717 Label loop, miss;
|
|
718
|
|
719 __ save_frame(0); // Blow no registers!
|
|
720
|
|
721 __ ld_ptr( G3, sizeof(oopDesc) + Klass::secondary_supers_offset_in_bytes(), L3 );
|
|
722 __ lduw(L3,arrayOopDesc::length_offset_in_bytes(),L0); // length in l0
|
|
723 __ add(L3,arrayOopDesc::base_offset_in_bytes(T_OBJECT),L1); // ptr into array
|
|
724 __ clr(L4); // Index
|
|
725 // Load a little early; will load 1 off the end of the array.
|
|
726 // Ok for now; revisit if we have other uses of this routine.
|
|
727 __ ld_ptr(L1,0,L2); // Will load a little early
|
|
728
|
|
729 // The scan loop
|
|
730 __ bind(loop);
|
|
731 __ add(L1,wordSize,L1); // Bump by OOP size
|
|
732 __ cmp(L4,L0);
|
|
733 __ br(Assembler::equal,false,Assembler::pn,miss);
|
|
734 __ delayed()->inc(L4); // Bump index
|
|
735 __ subcc(L2,G1,L3); // Check for match; zero in L3 for a hit
|
|
736 __ brx( Assembler::notEqual, false, Assembler::pt, loop );
|
|
737 __ delayed()->ld_ptr(L1,0,L2); // Will load a little early
|
|
738
|
|
739 // Got a hit; report success; set cache
|
|
740 __ st_ptr( G1, G3, sizeof(oopDesc) + Klass::secondary_super_cache_offset_in_bytes() );
|
|
741
|
|
742 __ mov(1, G3);
|
|
743 __ ret(); // Result in G5 is ok; flags set
|
|
744 __ delayed()->restore(); // free copy or add can go here
|
|
745
|
|
746 __ bind(miss);
|
|
747 __ mov(0, G3);
|
|
748 __ ret(); // Result in G5 is ok; flags set
|
|
749 __ delayed()->restore(); // free copy or add can go here
|
|
750 }
|
|
751
|
|
752 case monitorenter_nofpu_id:
|
|
753 case monitorenter_id:
|
|
754 { // G4: object
|
|
755 // G5: lock address
|
|
756 __ set_info("monitorenter", dont_gc_arguments);
|
|
757
|
|
758 int save_fpu_registers = (id == monitorenter_id);
|
|
759 // make a frame and preserve the caller's caller-save registers
|
|
760 OopMap* oop_map = save_live_registers(sasm, save_fpu_registers);
|
|
761
|
|
762 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, monitorenter), G4, G5);
|
|
763
|
|
764 oop_maps = new OopMapSet();
|
|
765 oop_maps->add_gc_map(call_offset, oop_map);
|
|
766 restore_live_registers(sasm, save_fpu_registers);
|
|
767
|
|
768 __ ret();
|
|
769 __ delayed()->restore();
|
|
770 }
|
|
771 break;
|
|
772
|
|
773 case monitorexit_nofpu_id:
|
|
774 case monitorexit_id:
|
|
775 { // G4: lock address
|
|
776 // note: really a leaf routine but must setup last java sp
|
|
777 // => use call_RT for now (speed can be improved by
|
|
778 // doing last java sp setup manually)
|
|
779 __ set_info("monitorexit", dont_gc_arguments);
|
|
780
|
|
781 int save_fpu_registers = (id == monitorexit_id);
|
|
782 // make a frame and preserve the caller's caller-save registers
|
|
783 OopMap* oop_map = save_live_registers(sasm, save_fpu_registers);
|
|
784
|
|
785 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, monitorexit), G4);
|
|
786
|
|
787 oop_maps = new OopMapSet();
|
|
788 oop_maps->add_gc_map(call_offset, oop_map);
|
|
789 restore_live_registers(sasm, save_fpu_registers);
|
|
790
|
|
791 __ ret();
|
|
792 __ delayed()->restore();
|
|
793
|
|
794 }
|
|
795 break;
|
|
796
|
|
797 case access_field_patching_id:
|
|
798 { __ set_info("access_field_patching", dont_gc_arguments);
|
|
799 oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, access_field_patching));
|
|
800 }
|
|
801 break;
|
|
802
|
|
803 case load_klass_patching_id:
|
|
804 { __ set_info("load_klass_patching", dont_gc_arguments);
|
|
805 oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, move_klass_patching));
|
|
806 }
|
|
807 break;
|
|
808
|
|
809 case jvmti_exception_throw_id:
|
|
810 { // Oexception : exception
|
|
811 __ set_info("jvmti_exception_throw", dont_gc_arguments);
|
|
812 oop_maps = generate_stub_call(sasm, noreg, CAST_FROM_FN_PTR(address, Runtime1::post_jvmti_exception_throw), I0);
|
|
813 }
|
|
814 break;
|
|
815
|
|
816 case dtrace_object_alloc_id:
|
|
817 { // O0: object
|
|
818 __ set_info("dtrace_object_alloc", dont_gc_arguments);
|
|
819 // we can't gc here so skip the oopmap but make sure that all
|
|
820 // the live registers get saved.
|
|
821 save_live_registers(sasm);
|
|
822
|
|
823 __ save_thread(L7_thread_cache);
|
|
824 __ call(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc),
|
|
825 relocInfo::runtime_call_type);
|
|
826 __ delayed()->mov(I0, O0);
|
|
827 __ restore_thread(L7_thread_cache);
|
|
828
|
|
829 restore_live_registers(sasm);
|
|
830 __ ret();
|
|
831 __ delayed()->restore();
|
|
832 }
|
|
833 break;
|
|
834
|
342
|
835 #ifndef SERIALGC
|
|
836 case g1_pre_barrier_slow_id:
|
|
837 { // G4: previous value of memory
|
|
838 BarrierSet* bs = Universe::heap()->barrier_set();
|
|
839 if (bs->kind() != BarrierSet::G1SATBCTLogging) {
|
|
840 __ save_frame(0);
|
|
841 __ set((int)id, O1);
|
|
842 __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), I0);
|
|
843 __ should_not_reach_here();
|
|
844 break;
|
|
845 }
|
|
846
|
|
847 __ set_info("g1_pre_barrier_slow_id", dont_gc_arguments);
|
|
848
|
|
849 Register pre_val = G4;
|
|
850 Register tmp = G1_scratch;
|
|
851 Register tmp2 = G3_scratch;
|
|
852
|
|
853 Label refill, restart;
|
|
854 bool with_frame = false; // I don't know if we can do with-frame.
|
|
855 int satb_q_index_byte_offset =
|
|
856 in_bytes(JavaThread::satb_mark_queue_offset() +
|
|
857 PtrQueue::byte_offset_of_index());
|
|
858 int satb_q_buf_byte_offset =
|
|
859 in_bytes(JavaThread::satb_mark_queue_offset() +
|
|
860 PtrQueue::byte_offset_of_buf());
|
|
861 __ bind(restart);
|
|
862 __ ld_ptr(G2_thread, satb_q_index_byte_offset, tmp);
|
|
863
|
|
864 __ br_on_reg_cond(Assembler::rc_z, /*annul*/false,
|
|
865 Assembler::pn, tmp, refill);
|
|
866
|
|
867 // If the branch is taken, no harm in executing this in the delay slot.
|
|
868 __ delayed()->ld_ptr(G2_thread, satb_q_buf_byte_offset, tmp2);
|
|
869 __ sub(tmp, oopSize, tmp);
|
|
870
|
|
871 __ st_ptr(pre_val, tmp2, tmp); // [_buf + index] := <address_of_card>
|
|
872 // Use return-from-leaf
|
|
873 __ retl();
|
|
874 __ delayed()->st_ptr(tmp, G2_thread, satb_q_index_byte_offset);
|
|
875
|
|
876 __ bind(refill);
|
|
877 __ save_frame(0);
|
|
878
|
|
879 __ mov(pre_val, L0);
|
|
880 __ mov(tmp, L1);
|
|
881 __ mov(tmp2, L2);
|
|
882
|
|
883 __ call_VM_leaf(L7_thread_cache,
|
|
884 CAST_FROM_FN_PTR(address,
|
|
885 SATBMarkQueueSet::handle_zero_index_for_thread),
|
|
886 G2_thread);
|
|
887
|
|
888 __ mov(L0, pre_val);
|
|
889 __ mov(L1, tmp);
|
|
890 __ mov(L2, tmp2);
|
|
891
|
|
892 __ br(Assembler::always, /*annul*/false, Assembler::pt, restart);
|
|
893 __ delayed()->restore();
|
|
894 }
|
|
895 break;
|
|
896
|
|
897 case g1_post_barrier_slow_id:
|
|
898 {
|
|
899 BarrierSet* bs = Universe::heap()->barrier_set();
|
|
900 if (bs->kind() != BarrierSet::G1SATBCTLogging) {
|
|
901 __ save_frame(0);
|
|
902 __ set((int)id, O1);
|
|
903 __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), I0);
|
|
904 __ should_not_reach_here();
|
|
905 break;
|
|
906 }
|
|
907
|
|
908 __ set_info("g1_post_barrier_slow_id", dont_gc_arguments);
|
|
909
|
|
910 Register addr = G4;
|
|
911 Register cardtable = G5;
|
|
912 Register tmp = G1_scratch;
|
|
913 Register tmp2 = G3_scratch;
|
|
914 jbyte* byte_map_base = ((CardTableModRefBS*)bs)->byte_map_base;
|
|
915
|
|
916 Label not_already_dirty, restart, refill;
|
|
917
|
|
918 #ifdef _LP64
|
|
919 __ srlx(addr, CardTableModRefBS::card_shift, addr);
|
|
920 #else
|
|
921 __ srl(addr, CardTableModRefBS::card_shift, addr);
|
|
922 #endif
|
|
923
|
|
924 Address rs(cardtable, (address)byte_map_base);
|
|
925 __ load_address(rs); // cardtable := <card table base>
|
|
926 __ ldub(addr, cardtable, tmp); // tmp := [addr + cardtable]
|
|
927
|
|
928 __ br_on_reg_cond(Assembler::rc_nz, /*annul*/false, Assembler::pt,
|
|
929 tmp, not_already_dirty);
|
|
930 // Get cardtable + tmp into a reg by itself -- useful in the take-the-branch
|
|
931 // case, harmless if not.
|
|
932 __ delayed()->add(addr, cardtable, tmp2);
|
|
933
|
|
934 // We didn't take the branch, so we're already dirty: return.
|
|
935 // Use return-from-leaf
|
|
936 __ retl();
|
|
937 __ delayed()->nop();
|
|
938
|
|
939 // Not dirty.
|
|
940 __ bind(not_already_dirty);
|
|
941 // First, dirty it.
|
|
942 __ stb(G0, tmp2, 0); // [cardPtr] := 0 (i.e., dirty).
|
|
943
|
|
944 Register tmp3 = cardtable;
|
|
945 Register tmp4 = tmp;
|
|
946
|
|
947 // these registers are now dead
|
|
948 addr = cardtable = tmp = noreg;
|
|
949
|
|
950 int dirty_card_q_index_byte_offset =
|
|
951 in_bytes(JavaThread::dirty_card_queue_offset() +
|
|
952 PtrQueue::byte_offset_of_index());
|
|
953 int dirty_card_q_buf_byte_offset =
|
|
954 in_bytes(JavaThread::dirty_card_queue_offset() +
|
|
955 PtrQueue::byte_offset_of_buf());
|
|
956 __ bind(restart);
|
|
957 __ ld_ptr(G2_thread, dirty_card_q_index_byte_offset, tmp3);
|
|
958
|
|
959 __ br_on_reg_cond(Assembler::rc_z, /*annul*/false, Assembler::pn,
|
|
960 tmp3, refill);
|
|
961 // If the branch is taken, no harm in executing this in the delay slot.
|
|
962 __ delayed()->ld_ptr(G2_thread, dirty_card_q_buf_byte_offset, tmp4);
|
|
963 __ sub(tmp3, oopSize, tmp3);
|
|
964
|
|
965 __ st_ptr(tmp2, tmp4, tmp3); // [_buf + index] := <address_of_card>
|
|
966 // Use return-from-leaf
|
|
967 __ retl();
|
|
968 __ delayed()->st_ptr(tmp3, G2_thread, dirty_card_q_index_byte_offset);
|
|
969
|
|
970 __ bind(refill);
|
|
971 __ save_frame(0);
|
|
972
|
|
973 __ mov(tmp2, L0);
|
|
974 __ mov(tmp3, L1);
|
|
975 __ mov(tmp4, L2);
|
|
976
|
|
977 __ call_VM_leaf(L7_thread_cache,
|
|
978 CAST_FROM_FN_PTR(address,
|
|
979 DirtyCardQueueSet::handle_zero_index_for_thread),
|
|
980 G2_thread);
|
|
981
|
|
982 __ mov(L0, tmp2);
|
|
983 __ mov(L1, tmp3);
|
|
984 __ mov(L2, tmp4);
|
|
985
|
|
986 __ br(Assembler::always, /*annul*/false, Assembler::pt, restart);
|
|
987 __ delayed()->restore();
|
|
988 }
|
|
989 break;
|
|
990 #endif // !SERIALGC
|
|
991
|
0
|
992 default:
|
|
993 { __ set_info("unimplemented entry", dont_gc_arguments);
|
|
994 __ save_frame(0);
|
|
995 __ set((int)id, O1);
|
|
996 __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), O1);
|
|
997 __ should_not_reach_here();
|
|
998 }
|
|
999 break;
|
|
1000 }
|
|
1001 return oop_maps;
|
|
1002 }
|
|
1003
|
|
1004
|
|
1005 void Runtime1::generate_handle_exception(StubAssembler* sasm, OopMapSet* oop_maps, OopMap* oop_map, bool) {
|
|
1006 Label no_deopt;
|
|
1007 Label no_handler;
|
|
1008
|
|
1009 __ verify_not_null_oop(Oexception);
|
|
1010
|
|
1011 // save the exception and issuing pc in the thread
|
|
1012 __ st_ptr(Oexception, G2_thread, in_bytes(JavaThread::exception_oop_offset()));
|
|
1013 __ st_ptr(Oissuing_pc, G2_thread, in_bytes(JavaThread::exception_pc_offset()));
|
|
1014
|
|
1015 // save the real return address and use the throwing pc as the return address to lookup (has bci & oop map)
|
|
1016 __ mov(I7, L0);
|
|
1017 __ mov(Oissuing_pc, I7);
|
|
1018 __ sub(I7, frame::pc_return_offset, I7);
|
|
1019 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, exception_handler_for_pc));
|
|
1020
|
|
1021 // Note: if nmethod has been deoptimized then regardless of
|
|
1022 // whether it had a handler or not we will deoptimize
|
|
1023 // by entering the deopt blob with a pending exception.
|
|
1024
|
|
1025 __ tst(O0);
|
|
1026 __ br(Assembler::zero, false, Assembler::pn, no_handler);
|
|
1027 __ delayed()->nop();
|
|
1028
|
|
1029 // restore the registers that were saved at the beginning and jump to the exception handler.
|
|
1030 restore_live_registers(sasm);
|
|
1031
|
|
1032 __ jmp(O0, 0);
|
|
1033 __ delayed()->restore();
|
|
1034
|
|
1035 __ bind(no_handler);
|
|
1036 __ mov(L0, I7); // restore return address
|
|
1037
|
|
1038 // restore exception oop
|
|
1039 __ ld_ptr(G2_thread, in_bytes(JavaThread::exception_oop_offset()), Oexception->after_save());
|
|
1040 __ st_ptr(G0, G2_thread, in_bytes(JavaThread::exception_oop_offset()));
|
|
1041
|
|
1042 __ restore();
|
|
1043
|
|
1044 Address exc(G4, Runtime1::entry_for(Runtime1::unwind_exception_id));
|
|
1045 __ jump_to(exc, 0);
|
|
1046 __ delayed()->nop();
|
|
1047
|
|
1048
|
|
1049 oop_maps->add_gc_map(call_offset, oop_map);
|
|
1050 }
|
|
1051
|
|
1052
|
|
1053 #undef __
|
|
1054
|
|
1055 #define __ masm->
|