Mon, 07 Jan 2013 14:08:28 -0800
8004537: replace AbstractAssembler emit_long with emit_int32
Reviewed-by: jrose, kvn, twisti
Contributed-by: Morris Meyer <morris.meyer@oracle.com>
1 /*
2 * Copyright (c) 1999, 2012, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
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23 */
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/compiledICHolder.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"
40 // Implementation of StubAssembler
42 int StubAssembler::call_RT(Register oop_result1, Register metadata_result, 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);
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);
53 // debugging support
54 assert(number_of_arguments >= 0 , "cannot have negative number of arguments");
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();
70 // check for pending exceptions
71 { Label L;
72 Address exception_addr(G2_thread, Thread::pending_exception_offset());
73 ld_ptr(exception_addr, Gtemp);
74 br_null_short(Gtemp, pt, L);
75 Address vm_result_addr(G2_thread, JavaThread::vm_result_offset());
76 st_ptr(G0, vm_result_addr);
77 Address vm_result_addr_2(G2_thread, JavaThread::vm_result_2_offset());
78 st_ptr(G0, vm_result_addr_2);
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 {
87 AddressLiteral exc(Runtime1::entry_for(Runtime1::forward_exception_id));
88 jump_to(exc, G4);
89 delayed()->nop();
90 }
91 bind(L);
92 }
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
99 Address vm_result_addr(G2_thread, JavaThread::vm_result_offset());
100 st_ptr(G0, vm_result_addr);
101 }
103 // get second result if there is one and reset the value in the thread
104 if (metadata_result->is_valid()) {
105 get_vm_result_2 (metadata_result);
106 } else {
107 // be a little paranoid and clear the result
108 Address vm_result_addr_2(G2_thread, JavaThread::vm_result_2_offset());
109 st_ptr(G0, vm_result_addr_2);
110 }
112 return call_offset;
113 }
116 int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry, Register arg1) {
117 // O0 is reserved for the thread
118 mov(arg1, O1);
119 return call_RT(oop_result1, metadata_result, entry, 1);
120 }
123 int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry, Register arg1, Register arg2) {
124 // O0 is reserved for the thread
125 mov(arg1, O1);
126 mov(arg2, O2); assert(arg2 != O1, "smashed argument");
127 return call_RT(oop_result1, metadata_result, entry, 2);
128 }
131 int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry, Register arg1, Register arg2, Register arg3) {
132 // O0 is reserved for the thread
133 mov(arg1, O1);
134 mov(arg2, O2); assert(arg2 != O1, "smashed argument");
135 mov(arg3, O3); assert(arg3 != O1 && arg3 != O2, "smashed argument");
136 return call_RT(oop_result1, metadata_result, entry, 3);
137 }
140 // Implementation of Runtime1
142 #define __ sasm->
144 static int cpu_reg_save_offsets[FrameMap::nof_cpu_regs];
145 static int fpu_reg_save_offsets[FrameMap::nof_fpu_regs];
146 static int reg_save_size_in_words;
147 static int frame_size_in_bytes = -1;
149 static OopMap* generate_oop_map(StubAssembler* sasm, bool save_fpu_registers) {
150 assert(frame_size_in_bytes == __ total_frame_size_in_bytes(reg_save_size_in_words),
151 "mismatch in calculation");
152 sasm->set_frame_size(frame_size_in_bytes / BytesPerWord);
153 int frame_size_in_slots = frame_size_in_bytes / sizeof(jint);
154 OopMap* oop_map = new OopMap(frame_size_in_slots, 0);
156 int i;
157 for (i = 0; i < FrameMap::nof_cpu_regs; i++) {
158 Register r = as_Register(i);
159 if (r == G1 || r == G3 || r == G4 || r == G5) {
160 int sp_offset = cpu_reg_save_offsets[i];
161 oop_map->set_callee_saved(VMRegImpl::stack2reg(sp_offset),
162 r->as_VMReg());
163 }
164 }
166 if (save_fpu_registers) {
167 for (i = 0; i < FrameMap::nof_fpu_regs; i++) {
168 FloatRegister r = as_FloatRegister(i);
169 int sp_offset = fpu_reg_save_offsets[i];
170 oop_map->set_callee_saved(VMRegImpl::stack2reg(sp_offset),
171 r->as_VMReg());
172 }
173 }
174 return oop_map;
175 }
177 static OopMap* save_live_registers(StubAssembler* sasm, bool save_fpu_registers = true) {
178 assert(frame_size_in_bytes == __ total_frame_size_in_bytes(reg_save_size_in_words),
179 "mismatch in calculation");
180 __ save_frame_c1(frame_size_in_bytes);
182 // Record volatile registers as callee-save values in an OopMap so their save locations will be
183 // propagated to the caller frame's RegisterMap during StackFrameStream construction (needed for
184 // deoptimization; see compiledVFrame::create_stack_value). The caller's I, L and O registers
185 // are saved in register windows - I's and L's in the caller's frame and O's in the stub frame
186 // (as the stub's I's) when the runtime routine called by the stub creates its frame.
187 // OopMap frame sizes are in c2 stack slot sizes (sizeof(jint))
189 int i;
190 for (i = 0; i < FrameMap::nof_cpu_regs; i++) {
191 Register r = as_Register(i);
192 if (r == G1 || r == G3 || r == G4 || r == G5) {
193 int sp_offset = cpu_reg_save_offsets[i];
194 __ st_ptr(r, SP, (sp_offset * BytesPerWord) + STACK_BIAS);
195 }
196 }
198 if (save_fpu_registers) {
199 for (i = 0; i < FrameMap::nof_fpu_regs; i++) {
200 FloatRegister r = as_FloatRegister(i);
201 int sp_offset = fpu_reg_save_offsets[i];
202 __ stf(FloatRegisterImpl::S, r, SP, (sp_offset * BytesPerWord) + STACK_BIAS);
203 }
204 }
206 return generate_oop_map(sasm, save_fpu_registers);
207 }
209 static void restore_live_registers(StubAssembler* sasm, bool restore_fpu_registers = true) {
210 for (int i = 0; i < FrameMap::nof_cpu_regs; i++) {
211 Register r = as_Register(i);
212 if (r == G1 || r == G3 || r == G4 || r == G5) {
213 __ ld_ptr(SP, (cpu_reg_save_offsets[i] * BytesPerWord) + STACK_BIAS, r);
214 }
215 }
217 if (restore_fpu_registers) {
218 for (int i = 0; i < FrameMap::nof_fpu_regs; i++) {
219 FloatRegister r = as_FloatRegister(i);
220 __ ldf(FloatRegisterImpl::S, SP, (fpu_reg_save_offsets[i] * BytesPerWord) + STACK_BIAS, r);
221 }
222 }
223 }
226 void Runtime1::initialize_pd() {
227 // compute word offsets from SP at which live (non-windowed) registers are captured by stub routines
228 //
229 // A stub routine will have a frame that is at least large enough to hold
230 // a register window save area (obviously) and the volatile g registers
231 // and floating registers. A user of save_live_registers can have a frame
232 // that has more scratch area in it (although typically they will use L-regs).
233 // in that case the frame will look like this (stack growing down)
234 //
235 // FP -> | |
236 // | scratch mem |
237 // | " " |
238 // --------------
239 // | float regs |
240 // | " " |
241 // ---------------
242 // | G regs |
243 // | " " |
244 // ---------------
245 // | abi reg. |
246 // | window save |
247 // | area |
248 // SP -> ---------------
249 //
250 int i;
251 int sp_offset = round_to(frame::register_save_words, 2); // start doubleword aligned
253 // only G int registers are saved explicitly; others are found in register windows
254 for (i = 0; i < FrameMap::nof_cpu_regs; i++) {
255 Register r = as_Register(i);
256 if (r == G1 || r == G3 || r == G4 || r == G5) {
257 cpu_reg_save_offsets[i] = sp_offset;
258 sp_offset++;
259 }
260 }
262 // all float registers are saved explicitly
263 assert(FrameMap::nof_fpu_regs == 32, "double registers not handled here");
264 for (i = 0; i < FrameMap::nof_fpu_regs; i++) {
265 fpu_reg_save_offsets[i] = sp_offset;
266 sp_offset++;
267 }
268 reg_save_size_in_words = sp_offset - frame::memory_parameter_word_sp_offset;
269 // this should match assembler::total_frame_size_in_bytes, which
270 // isn't callable from this context. It's checked by an assert when
271 // it's used though.
272 frame_size_in_bytes = align_size_up(sp_offset * wordSize, 8);
273 }
276 OopMapSet* Runtime1::generate_exception_throw(StubAssembler* sasm, address target, bool has_argument) {
277 // make a frame and preserve the caller's caller-save registers
278 OopMap* oop_map = save_live_registers(sasm);
279 int call_offset;
280 if (!has_argument) {
281 call_offset = __ call_RT(noreg, noreg, target);
282 } else {
283 call_offset = __ call_RT(noreg, noreg, target, G4);
284 }
285 OopMapSet* oop_maps = new OopMapSet();
286 oop_maps->add_gc_map(call_offset, oop_map);
288 __ should_not_reach_here();
289 return oop_maps;
290 }
293 OopMapSet* Runtime1::generate_stub_call(StubAssembler* sasm, Register result, address target,
294 Register arg1, Register arg2, Register arg3) {
295 // make a frame and preserve the caller's caller-save registers
296 OopMap* oop_map = save_live_registers(sasm);
298 int call_offset;
299 if (arg1 == noreg) {
300 call_offset = __ call_RT(result, noreg, target);
301 } else if (arg2 == noreg) {
302 call_offset = __ call_RT(result, noreg, target, arg1);
303 } else if (arg3 == noreg) {
304 call_offset = __ call_RT(result, noreg, target, arg1, arg2);
305 } else {
306 call_offset = __ call_RT(result, noreg, target, arg1, arg2, arg3);
307 }
308 OopMapSet* oop_maps = NULL;
310 oop_maps = new OopMapSet();
311 oop_maps->add_gc_map(call_offset, oop_map);
312 restore_live_registers(sasm);
314 __ ret();
315 __ delayed()->restore();
317 return oop_maps;
318 }
321 OopMapSet* Runtime1::generate_patching(StubAssembler* sasm, address target) {
322 // make a frame and preserve the caller's caller-save registers
323 OopMap* oop_map = save_live_registers(sasm);
325 // call the runtime patching routine, returns non-zero if nmethod got deopted.
326 int call_offset = __ call_RT(noreg, noreg, target);
327 OopMapSet* oop_maps = new OopMapSet();
328 oop_maps->add_gc_map(call_offset, oop_map);
330 // re-execute the patched instruction or, if the nmethod was deoptmized, return to the
331 // deoptimization handler entry that will cause re-execution of the current bytecode
332 DeoptimizationBlob* deopt_blob = SharedRuntime::deopt_blob();
333 assert(deopt_blob != NULL, "deoptimization blob must have been created");
335 Label no_deopt;
336 __ br_null_short(O0, Assembler::pt, no_deopt);
338 // return to the deoptimization handler entry for unpacking and rexecute
339 // if we simply returned the we'd deopt as if any call we patched had just
340 // returned.
342 restore_live_registers(sasm);
344 AddressLiteral dest(deopt_blob->unpack_with_reexecution());
345 __ jump_to(dest, O0);
346 __ delayed()->restore();
348 __ bind(no_deopt);
349 restore_live_registers(sasm);
350 __ ret();
351 __ delayed()->restore();
353 return oop_maps;
354 }
356 OopMapSet* Runtime1::generate_code_for(StubID id, StubAssembler* sasm) {
358 OopMapSet* oop_maps = NULL;
359 // for better readability
360 const bool must_gc_arguments = true;
361 const bool dont_gc_arguments = false;
363 // stub code & info for the different stubs
364 switch (id) {
365 case forward_exception_id:
366 {
367 oop_maps = generate_handle_exception(id, sasm);
368 }
369 break;
371 case new_instance_id:
372 case fast_new_instance_id:
373 case fast_new_instance_init_check_id:
374 {
375 Register G5_klass = G5; // Incoming
376 Register O0_obj = O0; // Outgoing
378 if (id == new_instance_id) {
379 __ set_info("new_instance", dont_gc_arguments);
380 } else if (id == fast_new_instance_id) {
381 __ set_info("fast new_instance", dont_gc_arguments);
382 } else {
383 assert(id == fast_new_instance_init_check_id, "bad StubID");
384 __ set_info("fast new_instance init check", dont_gc_arguments);
385 }
387 if ((id == fast_new_instance_id || id == fast_new_instance_init_check_id) &&
388 UseTLAB && FastTLABRefill) {
389 Label slow_path;
390 Register G1_obj_size = G1;
391 Register G3_t1 = G3;
392 Register G4_t2 = G4;
393 assert_different_registers(G5_klass, G1_obj_size, G3_t1, G4_t2);
395 // Push a frame since we may do dtrace notification for the
396 // allocation which requires calling out and we don't want
397 // to stomp the real return address.
398 __ save_frame(0);
400 if (id == fast_new_instance_init_check_id) {
401 // make sure the klass is initialized
402 __ ldub(G5_klass, in_bytes(InstanceKlass::init_state_offset()), G3_t1);
403 __ cmp_and_br_short(G3_t1, InstanceKlass::fully_initialized, Assembler::notEqual, Assembler::pn, slow_path);
404 }
405 #ifdef ASSERT
406 // assert object can be fast path allocated
407 {
408 Label ok, not_ok;
409 __ ld(G5_klass, in_bytes(Klass::layout_helper_offset()), G1_obj_size);
410 // make sure it's an instance (LH > 0)
411 __ cmp_and_br_short(G1_obj_size, 0, Assembler::lessEqual, Assembler::pn, not_ok);
412 __ btst(Klass::_lh_instance_slow_path_bit, G1_obj_size);
413 __ br(Assembler::zero, false, Assembler::pn, ok);
414 __ delayed()->nop();
415 __ bind(not_ok);
416 __ stop("assert(can be fast path allocated)");
417 __ should_not_reach_here();
418 __ bind(ok);
419 }
420 #endif // ASSERT
421 // if we got here then the TLAB allocation failed, so try
422 // refilling the TLAB or allocating directly from eden.
423 Label retry_tlab, try_eden;
424 __ tlab_refill(retry_tlab, try_eden, slow_path); // preserves G5_klass
426 __ bind(retry_tlab);
428 // get the instance size
429 __ ld(G5_klass, in_bytes(Klass::layout_helper_offset()), G1_obj_size);
431 __ tlab_allocate(O0_obj, G1_obj_size, 0, G3_t1, slow_path);
433 __ initialize_object(O0_obj, G5_klass, G1_obj_size, 0, G3_t1, G4_t2);
434 __ verify_oop(O0_obj);
435 __ mov(O0, I0);
436 __ ret();
437 __ delayed()->restore();
439 __ bind(try_eden);
440 // get the instance size
441 __ ld(G5_klass, in_bytes(Klass::layout_helper_offset()), G1_obj_size);
442 __ eden_allocate(O0_obj, G1_obj_size, 0, G3_t1, G4_t2, slow_path);
443 __ incr_allocated_bytes(G1_obj_size, G3_t1, G4_t2);
445 __ initialize_object(O0_obj, G5_klass, G1_obj_size, 0, G3_t1, G4_t2);
446 __ verify_oop(O0_obj);
447 __ mov(O0, I0);
448 __ ret();
449 __ delayed()->restore();
451 __ bind(slow_path);
453 // pop this frame so generate_stub_call can push it's own
454 __ restore();
455 }
457 oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_instance), G5_klass);
458 // I0->O0: new instance
459 }
461 break;
463 case counter_overflow_id:
464 // G4 contains bci, G5 contains method
465 oop_maps = generate_stub_call(sasm, noreg, CAST_FROM_FN_PTR(address, counter_overflow), G4, G5);
466 break;
468 case new_type_array_id:
469 case new_object_array_id:
470 {
471 Register G5_klass = G5; // Incoming
472 Register G4_length = G4; // Incoming
473 Register O0_obj = O0; // Outgoing
475 Address klass_lh(G5_klass, Klass::layout_helper_offset());
476 assert(Klass::_lh_header_size_shift % BitsPerByte == 0, "bytewise");
477 assert(Klass::_lh_header_size_mask == 0xFF, "bytewise");
478 // Use this offset to pick out an individual byte of the layout_helper:
479 const int klass_lh_header_size_offset = ((BytesPerInt - 1) // 3 - 2 selects byte {0,1,0,0}
480 - Klass::_lh_header_size_shift / BitsPerByte);
482 if (id == new_type_array_id) {
483 __ set_info("new_type_array", dont_gc_arguments);
484 } else {
485 __ set_info("new_object_array", dont_gc_arguments);
486 }
488 #ifdef ASSERT
489 // assert object type is really an array of the proper kind
490 {
491 Label ok;
492 Register G3_t1 = G3;
493 __ ld(klass_lh, G3_t1);
494 __ sra(G3_t1, Klass::_lh_array_tag_shift, G3_t1);
495 int tag = ((id == new_type_array_id)
496 ? Klass::_lh_array_tag_type_value
497 : Klass::_lh_array_tag_obj_value);
498 __ cmp_and_brx_short(G3_t1, tag, Assembler::equal, Assembler::pt, ok);
499 __ stop("assert(is an array klass)");
500 __ should_not_reach_here();
501 __ bind(ok);
502 }
503 #endif // ASSERT
505 if (UseTLAB && FastTLABRefill) {
506 Label slow_path;
507 Register G1_arr_size = G1;
508 Register G3_t1 = G3;
509 Register O1_t2 = O1;
510 assert_different_registers(G5_klass, G4_length, G1_arr_size, G3_t1, O1_t2);
512 // check that array length is small enough for fast path
513 __ set(C1_MacroAssembler::max_array_allocation_length, G3_t1);
514 __ cmp_and_br_short(G4_length, G3_t1, Assembler::greaterUnsigned, Assembler::pn, slow_path);
516 // if we got here then the TLAB allocation failed, so try
517 // refilling the TLAB or allocating directly from eden.
518 Label retry_tlab, try_eden;
519 __ tlab_refill(retry_tlab, try_eden, slow_path); // preserves G4_length and G5_klass
521 __ bind(retry_tlab);
523 // get the allocation size: (length << (layout_helper & 0x1F)) + header_size
524 __ ld(klass_lh, G3_t1);
525 __ sll(G4_length, G3_t1, G1_arr_size);
526 __ srl(G3_t1, Klass::_lh_header_size_shift, G3_t1);
527 __ and3(G3_t1, Klass::_lh_header_size_mask, G3_t1);
528 __ add(G1_arr_size, G3_t1, G1_arr_size);
529 __ add(G1_arr_size, MinObjAlignmentInBytesMask, G1_arr_size); // align up
530 __ and3(G1_arr_size, ~MinObjAlignmentInBytesMask, G1_arr_size);
532 __ tlab_allocate(O0_obj, G1_arr_size, 0, G3_t1, slow_path); // preserves G1_arr_size
534 __ initialize_header(O0_obj, G5_klass, G4_length, G3_t1, O1_t2);
535 __ ldub(klass_lh, G3_t1, klass_lh_header_size_offset);
536 __ sub(G1_arr_size, G3_t1, O1_t2); // body length
537 __ add(O0_obj, G3_t1, G3_t1); // body start
538 __ initialize_body(G3_t1, O1_t2);
539 __ verify_oop(O0_obj);
540 __ retl();
541 __ delayed()->nop();
543 __ bind(try_eden);
544 // get the allocation size: (length << (layout_helper & 0x1F)) + header_size
545 __ ld(klass_lh, G3_t1);
546 __ sll(G4_length, G3_t1, G1_arr_size);
547 __ srl(G3_t1, Klass::_lh_header_size_shift, G3_t1);
548 __ and3(G3_t1, Klass::_lh_header_size_mask, G3_t1);
549 __ add(G1_arr_size, G3_t1, G1_arr_size);
550 __ add(G1_arr_size, MinObjAlignmentInBytesMask, G1_arr_size);
551 __ and3(G1_arr_size, ~MinObjAlignmentInBytesMask, G1_arr_size);
553 __ eden_allocate(O0_obj, G1_arr_size, 0, G3_t1, O1_t2, slow_path); // preserves G1_arr_size
554 __ incr_allocated_bytes(G1_arr_size, G3_t1, O1_t2);
556 __ initialize_header(O0_obj, G5_klass, G4_length, G3_t1, O1_t2);
557 __ ldub(klass_lh, G3_t1, klass_lh_header_size_offset);
558 __ sub(G1_arr_size, G3_t1, O1_t2); // body length
559 __ add(O0_obj, G3_t1, G3_t1); // body start
560 __ initialize_body(G3_t1, O1_t2);
561 __ verify_oop(O0_obj);
562 __ retl();
563 __ delayed()->nop();
565 __ bind(slow_path);
566 }
568 if (id == new_type_array_id) {
569 oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_type_array), G5_klass, G4_length);
570 } else {
571 oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_object_array), G5_klass, G4_length);
572 }
573 // I0 -> O0: new array
574 }
575 break;
577 case new_multi_array_id:
578 { // O0: klass
579 // O1: rank
580 // O2: address of 1st dimension
581 __ set_info("new_multi_array", dont_gc_arguments);
582 oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_multi_array), I0, I1, I2);
583 // I0 -> O0: new multi array
584 }
585 break;
587 case register_finalizer_id:
588 {
589 __ set_info("register_finalizer", dont_gc_arguments);
591 // load the klass and check the has finalizer flag
592 Label register_finalizer;
593 Register t = O1;
594 __ load_klass(O0, t);
595 __ ld(t, in_bytes(Klass::access_flags_offset()), t);
596 __ set(JVM_ACC_HAS_FINALIZER, G3);
597 __ andcc(G3, t, G0);
598 __ br(Assembler::notZero, false, Assembler::pt, register_finalizer);
599 __ delayed()->nop();
601 // do a leaf return
602 __ retl();
603 __ delayed()->nop();
605 __ bind(register_finalizer);
606 OopMap* oop_map = save_live_registers(sasm);
607 int call_offset = __ call_RT(noreg, noreg,
608 CAST_FROM_FN_PTR(address, SharedRuntime::register_finalizer), I0);
609 oop_maps = new OopMapSet();
610 oop_maps->add_gc_map(call_offset, oop_map);
612 // Now restore all the live registers
613 restore_live_registers(sasm);
615 __ ret();
616 __ delayed()->restore();
617 }
618 break;
620 case throw_range_check_failed_id:
621 { __ set_info("range_check_failed", dont_gc_arguments); // arguments will be discarded
622 // G4: index
623 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_range_check_exception), true);
624 }
625 break;
627 case throw_index_exception_id:
628 { __ set_info("index_range_check_failed", dont_gc_arguments); // arguments will be discarded
629 // G4: index
630 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_index_exception), true);
631 }
632 break;
634 case throw_div0_exception_id:
635 { __ set_info("throw_div0_exception", dont_gc_arguments);
636 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_div0_exception), false);
637 }
638 break;
640 case throw_null_pointer_exception_id:
641 { __ set_info("throw_null_pointer_exception", dont_gc_arguments);
642 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_null_pointer_exception), false);
643 }
644 break;
646 case handle_exception_id:
647 { __ set_info("handle_exception", dont_gc_arguments);
648 oop_maps = generate_handle_exception(id, sasm);
649 }
650 break;
652 case handle_exception_from_callee_id:
653 { __ set_info("handle_exception_from_callee", dont_gc_arguments);
654 oop_maps = generate_handle_exception(id, sasm);
655 }
656 break;
658 case unwind_exception_id:
659 {
660 // O0: exception
661 // I7: address of call to this method
663 __ set_info("unwind_exception", dont_gc_arguments);
664 __ mov(Oexception, Oexception->after_save());
665 __ add(I7, frame::pc_return_offset, Oissuing_pc->after_save());
667 __ call_VM_leaf(L7_thread_cache, CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address),
668 G2_thread, Oissuing_pc->after_save());
669 __ verify_not_null_oop(Oexception->after_save());
671 // Restore SP from L7 if the exception PC is a method handle call site.
672 __ mov(O0, G5); // Save the target address.
673 __ lduw(Address(G2_thread, JavaThread::is_method_handle_return_offset()), L0);
674 __ tst(L0); // Condition codes are preserved over the restore.
675 __ restore();
677 __ jmp(G5, 0);
678 __ delayed()->movcc(Assembler::notZero, false, Assembler::icc, L7_mh_SP_save, SP); // Restore SP if required.
679 }
680 break;
682 case throw_array_store_exception_id:
683 {
684 __ set_info("throw_array_store_exception", dont_gc_arguments);
685 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_array_store_exception), true);
686 }
687 break;
689 case throw_class_cast_exception_id:
690 {
691 // G4: object
692 __ set_info("throw_class_cast_exception", dont_gc_arguments);
693 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_class_cast_exception), true);
694 }
695 break;
697 case throw_incompatible_class_change_error_id:
698 {
699 __ set_info("throw_incompatible_class_cast_exception", dont_gc_arguments);
700 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_incompatible_class_change_error), false);
701 }
702 break;
704 case slow_subtype_check_id:
705 { // Support for uint StubRoutine::partial_subtype_check( Klass sub, Klass super );
706 // Arguments :
707 //
708 // ret : G3
709 // sub : G3, argument, destroyed
710 // super: G1, argument, not changed
711 // raddr: O7, blown by call
712 Label miss;
714 __ save_frame(0); // Blow no registers!
716 __ check_klass_subtype_slow_path(G3, G1, L0, L1, L2, L4, NULL, &miss);
718 __ mov(1, G3);
719 __ ret(); // Result in G5 is 'true'
720 __ delayed()->restore(); // free copy or add can go here
722 __ bind(miss);
723 __ mov(0, G3);
724 __ ret(); // Result in G5 is 'false'
725 __ delayed()->restore(); // free copy or add can go here
726 }
728 case monitorenter_nofpu_id:
729 case monitorenter_id:
730 { // G4: object
731 // G5: lock address
732 __ set_info("monitorenter", dont_gc_arguments);
734 int save_fpu_registers = (id == monitorenter_id);
735 // make a frame and preserve the caller's caller-save registers
736 OopMap* oop_map = save_live_registers(sasm, save_fpu_registers);
738 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, monitorenter), G4, G5);
740 oop_maps = new OopMapSet();
741 oop_maps->add_gc_map(call_offset, oop_map);
742 restore_live_registers(sasm, save_fpu_registers);
744 __ ret();
745 __ delayed()->restore();
746 }
747 break;
749 case monitorexit_nofpu_id:
750 case monitorexit_id:
751 { // G4: lock address
752 // note: really a leaf routine but must setup last java sp
753 // => use call_RT for now (speed can be improved by
754 // doing last java sp setup manually)
755 __ set_info("monitorexit", dont_gc_arguments);
757 int save_fpu_registers = (id == monitorexit_id);
758 // make a frame and preserve the caller's caller-save registers
759 OopMap* oop_map = save_live_registers(sasm, save_fpu_registers);
761 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, monitorexit), G4);
763 oop_maps = new OopMapSet();
764 oop_maps->add_gc_map(call_offset, oop_map);
765 restore_live_registers(sasm, save_fpu_registers);
767 __ ret();
768 __ delayed()->restore();
769 }
770 break;
772 case deoptimize_id:
773 {
774 __ set_info("deoptimize", dont_gc_arguments);
775 OopMap* oop_map = save_live_registers(sasm);
776 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, deoptimize));
777 oop_maps = new OopMapSet();
778 oop_maps->add_gc_map(call_offset, oop_map);
779 restore_live_registers(sasm);
780 DeoptimizationBlob* deopt_blob = SharedRuntime::deopt_blob();
781 assert(deopt_blob != NULL, "deoptimization blob must have been created");
782 AddressLiteral dest(deopt_blob->unpack_with_reexecution());
783 __ jump_to(dest, O0);
784 __ delayed()->restore();
785 }
786 break;
788 case access_field_patching_id:
789 { __ set_info("access_field_patching", dont_gc_arguments);
790 oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, access_field_patching));
791 }
792 break;
794 case load_klass_patching_id:
795 { __ set_info("load_klass_patching", dont_gc_arguments);
796 oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, move_klass_patching));
797 }
798 break;
800 case load_mirror_patching_id:
801 { __ set_info("load_mirror_patching", dont_gc_arguments);
802 oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, move_mirror_patching));
803 }
804 break;
806 case dtrace_object_alloc_id:
807 { // O0: object
808 __ set_info("dtrace_object_alloc", dont_gc_arguments);
809 // we can't gc here so skip the oopmap but make sure that all
810 // the live registers get saved.
811 save_live_registers(sasm);
813 __ save_thread(L7_thread_cache);
814 __ call(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc),
815 relocInfo::runtime_call_type);
816 __ delayed()->mov(I0, O0);
817 __ restore_thread(L7_thread_cache);
819 restore_live_registers(sasm);
820 __ ret();
821 __ delayed()->restore();
822 }
823 break;
825 #ifndef SERIALGC
826 case g1_pre_barrier_slow_id:
827 { // G4: previous value of memory
828 BarrierSet* bs = Universe::heap()->barrier_set();
829 if (bs->kind() != BarrierSet::G1SATBCTLogging) {
830 __ save_frame(0);
831 __ set((int)id, O1);
832 __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), I0);
833 __ should_not_reach_here();
834 break;
835 }
837 __ set_info("g1_pre_barrier_slow_id", dont_gc_arguments);
839 Register pre_val = G4;
840 Register tmp = G1_scratch;
841 Register tmp2 = G3_scratch;
843 Label refill, restart;
844 bool with_frame = false; // I don't know if we can do with-frame.
845 int satb_q_index_byte_offset =
846 in_bytes(JavaThread::satb_mark_queue_offset() +
847 PtrQueue::byte_offset_of_index());
848 int satb_q_buf_byte_offset =
849 in_bytes(JavaThread::satb_mark_queue_offset() +
850 PtrQueue::byte_offset_of_buf());
852 __ bind(restart);
853 // Load the index into the SATB buffer. PtrQueue::_index is a
854 // size_t so ld_ptr is appropriate
855 __ ld_ptr(G2_thread, satb_q_index_byte_offset, tmp);
857 // index == 0?
858 __ cmp_and_brx_short(tmp, G0, Assembler::equal, Assembler::pn, refill);
860 __ ld_ptr(G2_thread, satb_q_buf_byte_offset, tmp2);
861 __ sub(tmp, oopSize, tmp);
863 __ st_ptr(pre_val, tmp2, tmp); // [_buf + index] := <address_of_card>
864 // Use return-from-leaf
865 __ retl();
866 __ delayed()->st_ptr(tmp, G2_thread, satb_q_index_byte_offset);
868 __ bind(refill);
869 __ save_frame(0);
871 __ mov(pre_val, L0);
872 __ mov(tmp, L1);
873 __ mov(tmp2, L2);
875 __ call_VM_leaf(L7_thread_cache,
876 CAST_FROM_FN_PTR(address,
877 SATBMarkQueueSet::handle_zero_index_for_thread),
878 G2_thread);
880 __ mov(L0, pre_val);
881 __ mov(L1, tmp);
882 __ mov(L2, tmp2);
884 __ br(Assembler::always, /*annul*/false, Assembler::pt, restart);
885 __ delayed()->restore();
886 }
887 break;
889 case g1_post_barrier_slow_id:
890 {
891 BarrierSet* bs = Universe::heap()->barrier_set();
892 if (bs->kind() != BarrierSet::G1SATBCTLogging) {
893 __ save_frame(0);
894 __ set((int)id, O1);
895 __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), I0);
896 __ should_not_reach_here();
897 break;
898 }
900 __ set_info("g1_post_barrier_slow_id", dont_gc_arguments);
902 Register addr = G4;
903 Register cardtable = G5;
904 Register tmp = G1_scratch;
905 Register tmp2 = G3_scratch;
906 jbyte* byte_map_base = ((CardTableModRefBS*)bs)->byte_map_base;
908 Label not_already_dirty, restart, refill;
910 #ifdef _LP64
911 __ srlx(addr, CardTableModRefBS::card_shift, addr);
912 #else
913 __ srl(addr, CardTableModRefBS::card_shift, addr);
914 #endif
916 AddressLiteral rs(byte_map_base);
917 __ set(rs, cardtable); // cardtable := <card table base>
918 __ ldub(addr, cardtable, tmp); // tmp := [addr + cardtable]
920 assert(CardTableModRefBS::dirty_card_val() == 0, "otherwise check this code");
921 __ cmp_and_br_short(tmp, G0, Assembler::notEqual, Assembler::pt, not_already_dirty);
923 // We didn't take the branch, so we're already dirty: return.
924 // Use return-from-leaf
925 __ retl();
926 __ delayed()->nop();
928 // Not dirty.
929 __ bind(not_already_dirty);
931 // Get cardtable + tmp into a reg by itself
932 __ add(addr, cardtable, tmp2);
934 // First, dirty it.
935 __ stb(G0, tmp2, 0); // [cardPtr] := 0 (i.e., dirty).
937 Register tmp3 = cardtable;
938 Register tmp4 = tmp;
940 // these registers are now dead
941 addr = cardtable = tmp = noreg;
943 int dirty_card_q_index_byte_offset =
944 in_bytes(JavaThread::dirty_card_queue_offset() +
945 PtrQueue::byte_offset_of_index());
946 int dirty_card_q_buf_byte_offset =
947 in_bytes(JavaThread::dirty_card_queue_offset() +
948 PtrQueue::byte_offset_of_buf());
950 __ bind(restart);
952 // Get the index into the update buffer. PtrQueue::_index is
953 // a size_t so ld_ptr is appropriate here.
954 __ ld_ptr(G2_thread, dirty_card_q_index_byte_offset, tmp3);
956 // index == 0?
957 __ cmp_and_brx_short(tmp3, G0, Assembler::equal, Assembler::pn, refill);
959 __ ld_ptr(G2_thread, dirty_card_q_buf_byte_offset, tmp4);
960 __ sub(tmp3, oopSize, tmp3);
962 __ st_ptr(tmp2, tmp4, tmp3); // [_buf + index] := <address_of_card>
963 // Use return-from-leaf
964 __ retl();
965 __ delayed()->st_ptr(tmp3, G2_thread, dirty_card_q_index_byte_offset);
967 __ bind(refill);
968 __ save_frame(0);
970 __ mov(tmp2, L0);
971 __ mov(tmp3, L1);
972 __ mov(tmp4, L2);
974 __ call_VM_leaf(L7_thread_cache,
975 CAST_FROM_FN_PTR(address,
976 DirtyCardQueueSet::handle_zero_index_for_thread),
977 G2_thread);
979 __ mov(L0, tmp2);
980 __ mov(L1, tmp3);
981 __ mov(L2, tmp4);
983 __ br(Assembler::always, /*annul*/false, Assembler::pt, restart);
984 __ delayed()->restore();
985 }
986 break;
987 #endif // !SERIALGC
989 default:
990 { __ set_info("unimplemented entry", dont_gc_arguments);
991 __ save_frame(0);
992 __ set((int)id, O1);
993 __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), O1);
994 __ should_not_reach_here();
995 }
996 break;
997 }
998 return oop_maps;
999 }
1002 OopMapSet* Runtime1::generate_handle_exception(StubID id, StubAssembler* sasm) {
1003 __ block_comment("generate_handle_exception");
1005 // Save registers, if required.
1006 OopMapSet* oop_maps = new OopMapSet();
1007 OopMap* oop_map = NULL;
1008 switch (id) {
1009 case forward_exception_id:
1010 // We're handling an exception in the context of a compiled frame.
1011 // The registers have been saved in the standard places. Perform
1012 // an exception lookup in the caller and dispatch to the handler
1013 // if found. Otherwise unwind and dispatch to the callers
1014 // exception handler.
1015 oop_map = generate_oop_map(sasm, true);
1017 // transfer the pending exception to the exception_oop
1018 __ ld_ptr(G2_thread, in_bytes(JavaThread::pending_exception_offset()), Oexception);
1019 __ ld_ptr(Oexception, 0, G0);
1020 __ st_ptr(G0, G2_thread, in_bytes(JavaThread::pending_exception_offset()));
1021 __ add(I7, frame::pc_return_offset, Oissuing_pc);
1022 break;
1023 case handle_exception_id:
1024 // At this point all registers MAY be live.
1025 oop_map = save_live_registers(sasm);
1026 __ mov(Oexception->after_save(), Oexception);
1027 __ mov(Oissuing_pc->after_save(), Oissuing_pc);
1028 break;
1029 case handle_exception_from_callee_id:
1030 // At this point all registers except exception oop (Oexception)
1031 // and exception pc (Oissuing_pc) are dead.
1032 oop_map = new OopMap(frame_size_in_bytes / sizeof(jint), 0);
1033 sasm->set_frame_size(frame_size_in_bytes / BytesPerWord);
1034 __ save_frame_c1(frame_size_in_bytes);
1035 __ mov(Oexception->after_save(), Oexception);
1036 __ mov(Oissuing_pc->after_save(), Oissuing_pc);
1037 break;
1038 default: ShouldNotReachHere();
1039 }
1041 __ verify_not_null_oop(Oexception);
1043 // save the exception and issuing pc in the thread
1044 __ st_ptr(Oexception, G2_thread, in_bytes(JavaThread::exception_oop_offset()));
1045 __ st_ptr(Oissuing_pc, G2_thread, in_bytes(JavaThread::exception_pc_offset()));
1047 // use the throwing pc as the return address to lookup (has bci & oop map)
1048 __ mov(Oissuing_pc, I7);
1049 __ sub(I7, frame::pc_return_offset, I7);
1050 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, exception_handler_for_pc));
1051 oop_maps->add_gc_map(call_offset, oop_map);
1053 // Note: if nmethod has been deoptimized then regardless of
1054 // whether it had a handler or not we will deoptimize
1055 // by entering the deopt blob with a pending exception.
1057 // Restore the registers that were saved at the beginning, remove
1058 // the frame and jump to the exception handler.
1059 switch (id) {
1060 case forward_exception_id:
1061 case handle_exception_id:
1062 restore_live_registers(sasm);
1063 __ jmp(O0, 0);
1064 __ delayed()->restore();
1065 break;
1066 case handle_exception_from_callee_id:
1067 // Restore SP from L7 if the exception PC is a method handle call site.
1068 __ mov(O0, G5); // Save the target address.
1069 __ lduw(Address(G2_thread, JavaThread::is_method_handle_return_offset()), L0);
1070 __ tst(L0); // Condition codes are preserved over the restore.
1071 __ restore();
1073 __ jmp(G5, 0); // jump to the exception handler
1074 __ delayed()->movcc(Assembler::notZero, false, Assembler::icc, L7_mh_SP_save, SP); // Restore SP if required.
1075 break;
1076 default: ShouldNotReachHere();
1077 }
1079 return oop_maps;
1080 }
1083 #undef __
1085 const char *Runtime1::pd_name_for_address(address entry) {
1086 return "<unknown function>";
1087 }