Fri, 30 Apr 2010 08:37:24 -0700
6943304: remove tagged stack interpreter
Reviewed-by: coleenp, never, gbenson
1 /*
2 * Copyright 1999-2010 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 */
25 #include "incls/_precompiled.incl"
26 #include "incls/_c1_CodeStubs_sparc.cpp.incl"
28 #define __ ce->masm()->
30 RangeCheckStub::RangeCheckStub(CodeEmitInfo* info, LIR_Opr index,
31 bool throw_index_out_of_bounds_exception)
32 : _throw_index_out_of_bounds_exception(throw_index_out_of_bounds_exception)
33 , _index(index)
34 {
35 _info = new CodeEmitInfo(info);
36 }
39 void RangeCheckStub::emit_code(LIR_Assembler* ce) {
40 __ bind(_entry);
42 if (_index->is_register()) {
43 __ mov(_index->as_register(), G4);
44 } else {
45 __ set(_index->as_jint(), G4);
46 }
47 if (_throw_index_out_of_bounds_exception) {
48 __ call(Runtime1::entry_for(Runtime1::throw_index_exception_id), relocInfo::runtime_call_type);
49 } else {
50 __ call(Runtime1::entry_for(Runtime1::throw_range_check_failed_id), relocInfo::runtime_call_type);
51 }
52 __ delayed()->nop();
53 ce->add_call_info_here(_info);
54 ce->verify_oop_map(_info);
55 #ifdef ASSERT
56 __ should_not_reach_here();
57 #endif
58 }
60 #ifdef TIERED
62 void CounterOverflowStub::emit_code(LIR_Assembler* ce) {
63 __ bind(_entry);
64 __ set(_bci, G4);
65 __ call(Runtime1::entry_for(Runtime1::counter_overflow_id), relocInfo::runtime_call_type);
66 __ delayed()->nop();
67 ce->add_call_info_here(_info);
68 ce->verify_oop_map(_info);
70 __ br(Assembler::always, true, Assembler::pt, _continuation);
71 __ delayed()->nop();
72 }
74 #endif // TIERED
76 void DivByZeroStub::emit_code(LIR_Assembler* ce) {
77 if (_offset != -1) {
78 ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
79 }
80 __ bind(_entry);
81 __ call(Runtime1::entry_for(Runtime1::throw_div0_exception_id), relocInfo::runtime_call_type);
82 __ delayed()->nop();
83 ce->add_call_info_here(_info);
84 ce->verify_oop_map(_info);
85 #ifdef ASSERT
86 __ should_not_reach_here();
87 #endif
88 }
91 void ImplicitNullCheckStub::emit_code(LIR_Assembler* ce) {
92 ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
93 __ bind(_entry);
94 __ call(Runtime1::entry_for(Runtime1::throw_null_pointer_exception_id),
95 relocInfo::runtime_call_type);
96 __ delayed()->nop();
97 ce->add_call_info_here(_info);
98 ce->verify_oop_map(_info);
99 #ifdef ASSERT
100 __ should_not_reach_here();
101 #endif
102 }
105 // Implementation of SimpleExceptionStub
106 // Note: %g1 and %g3 are already in use
107 void SimpleExceptionStub::emit_code(LIR_Assembler* ce) {
108 __ bind(_entry);
109 __ call(Runtime1::entry_for(_stub), relocInfo::runtime_call_type);
111 if (_obj->is_valid()) {
112 __ delayed()->mov(_obj->as_register(), G4); // _obj contains the optional argument to the stub
113 } else {
114 __ delayed()->mov(G0, G4);
115 }
116 ce->add_call_info_here(_info);
117 #ifdef ASSERT
118 __ should_not_reach_here();
119 #endif
120 }
123 // Implementation of ArrayStoreExceptionStub
125 ArrayStoreExceptionStub::ArrayStoreExceptionStub(CodeEmitInfo* info):
126 _info(info) {
127 }
130 void ArrayStoreExceptionStub::emit_code(LIR_Assembler* ce) {
131 __ bind(_entry);
132 __ call(Runtime1::entry_for(Runtime1::throw_array_store_exception_id), relocInfo::runtime_call_type);
133 __ delayed()->nop();
134 ce->add_call_info_here(_info);
135 ce->verify_oop_map(_info);
136 #ifdef ASSERT
137 __ should_not_reach_here();
138 #endif
139 }
144 // Implementation of NewInstanceStub
146 NewInstanceStub::NewInstanceStub(LIR_Opr klass_reg, LIR_Opr result, ciInstanceKlass* klass, CodeEmitInfo* info, Runtime1::StubID stub_id) {
147 _result = result;
148 _klass = klass;
149 _klass_reg = klass_reg;
150 _info = new CodeEmitInfo(info);
151 assert(stub_id == Runtime1::new_instance_id ||
152 stub_id == Runtime1::fast_new_instance_id ||
153 stub_id == Runtime1::fast_new_instance_init_check_id,
154 "need new_instance id");
155 _stub_id = stub_id;
156 }
159 void NewInstanceStub::emit_code(LIR_Assembler* ce) {
160 __ bind(_entry);
161 __ call(Runtime1::entry_for(_stub_id), relocInfo::runtime_call_type);
162 __ delayed()->mov_or_nop(_klass_reg->as_register(), G5);
163 ce->add_call_info_here(_info);
164 ce->verify_oop_map(_info);
165 __ br(Assembler::always, false, Assembler::pt, _continuation);
166 __ delayed()->mov_or_nop(O0, _result->as_register());
167 }
170 // Implementation of NewTypeArrayStub
171 NewTypeArrayStub::NewTypeArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
172 _klass_reg = klass_reg;
173 _length = length;
174 _result = result;
175 _info = new CodeEmitInfo(info);
176 }
179 void NewTypeArrayStub::emit_code(LIR_Assembler* ce) {
180 __ bind(_entry);
182 __ mov(_length->as_register(), G4);
183 __ call(Runtime1::entry_for(Runtime1::new_type_array_id), relocInfo::runtime_call_type);
184 __ delayed()->mov_or_nop(_klass_reg->as_register(), G5);
185 ce->add_call_info_here(_info);
186 ce->verify_oop_map(_info);
187 __ br(Assembler::always, false, Assembler::pt, _continuation);
188 __ delayed()->mov_or_nop(O0, _result->as_register());
189 }
192 // Implementation of NewObjectArrayStub
194 NewObjectArrayStub::NewObjectArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
195 _klass_reg = klass_reg;
196 _length = length;
197 _result = result;
198 _info = new CodeEmitInfo(info);
199 }
202 void NewObjectArrayStub::emit_code(LIR_Assembler* ce) {
203 __ bind(_entry);
205 __ mov(_length->as_register(), G4);
206 __ call(Runtime1::entry_for(Runtime1::new_object_array_id), relocInfo::runtime_call_type);
207 __ delayed()->mov_or_nop(_klass_reg->as_register(), G5);
208 ce->add_call_info_here(_info);
209 ce->verify_oop_map(_info);
210 __ br(Assembler::always, false, Assembler::pt, _continuation);
211 __ delayed()->mov_or_nop(O0, _result->as_register());
212 }
215 // Implementation of MonitorAccessStubs
216 MonitorEnterStub::MonitorEnterStub(LIR_Opr obj_reg, LIR_Opr lock_reg, CodeEmitInfo* info)
217 : MonitorAccessStub(obj_reg, lock_reg) {
218 _info = new CodeEmitInfo(info);
219 }
222 void MonitorEnterStub::emit_code(LIR_Assembler* ce) {
223 __ bind(_entry);
224 __ mov(_obj_reg->as_register(), G4);
225 if (ce->compilation()->has_fpu_code()) {
226 __ call(Runtime1::entry_for(Runtime1::monitorenter_id), relocInfo::runtime_call_type);
227 } else {
228 __ call(Runtime1::entry_for(Runtime1::monitorenter_nofpu_id), relocInfo::runtime_call_type);
229 }
230 __ delayed()->mov_or_nop(_lock_reg->as_register(), G5);
231 ce->add_call_info_here(_info);
232 ce->verify_oop_map(_info);
233 __ br(Assembler::always, true, Assembler::pt, _continuation);
234 __ delayed()->nop();
235 }
238 void MonitorExitStub::emit_code(LIR_Assembler* ce) {
239 __ bind(_entry);
240 if (_compute_lock) {
241 ce->monitor_address(_monitor_ix, _lock_reg);
242 }
243 if (ce->compilation()->has_fpu_code()) {
244 __ call(Runtime1::entry_for(Runtime1::monitorexit_id), relocInfo::runtime_call_type);
245 } else {
246 __ call(Runtime1::entry_for(Runtime1::monitorexit_nofpu_id), relocInfo::runtime_call_type);
247 }
249 __ delayed()->mov_or_nop(_lock_reg->as_register(), G4);
250 __ br(Assembler::always, true, Assembler::pt, _continuation);
251 __ delayed()->nop();
252 }
254 // Implementation of patching:
255 // - Copy the code at given offset to an inlined buffer (first the bytes, then the number of bytes)
256 // - Replace original code with a call to the stub
257 // At Runtime:
258 // - call to stub, jump to runtime
259 // - in runtime: preserve all registers (especially objects, i.e., source and destination object)
260 // - in runtime: after initializing class, restore original code, reexecute instruction
262 int PatchingStub::_patch_info_offset = -NativeGeneralJump::instruction_size;
264 void PatchingStub::align_patch_site(MacroAssembler* ) {
265 // patch sites on sparc are always properly aligned.
266 }
268 void PatchingStub::emit_code(LIR_Assembler* ce) {
269 // copy original code here
270 assert(NativeCall::instruction_size <= _bytes_to_copy && _bytes_to_copy <= 0xFF,
271 "not enough room for call");
272 assert((_bytes_to_copy & 0x3) == 0, "must copy a multiple of four bytes");
274 Label call_patch;
276 int being_initialized_entry = __ offset();
278 if (_id == load_klass_id) {
279 // produce a copy of the load klass instruction for use by the being initialized case
280 #ifdef ASSERT
281 address start = __ pc();
282 #endif
283 AddressLiteral addrlit(NULL, oop_Relocation::spec(_oop_index));
284 __ patchable_set(addrlit, _obj);
286 #ifdef ASSERT
287 for (int i = 0; i < _bytes_to_copy; i++) {
288 address ptr = (address)(_pc_start + i);
289 int a_byte = (*ptr) & 0xFF;
290 assert(a_byte == *start++, "should be the same code");
291 }
292 #endif
293 } else {
294 // make a copy the code which is going to be patched.
295 for (int i = 0; i < _bytes_to_copy; i++) {
296 address ptr = (address)(_pc_start + i);
297 int a_byte = (*ptr) & 0xFF;
298 __ a_byte (a_byte);
299 }
300 }
302 address end_of_patch = __ pc();
303 int bytes_to_skip = 0;
304 if (_id == load_klass_id) {
305 int offset = __ offset();
306 if (CommentedAssembly) {
307 __ block_comment(" being_initialized check");
308 }
310 // static field accesses have special semantics while the class
311 // initializer is being run so we emit a test which can be used to
312 // check that this code is being executed by the initializing
313 // thread.
314 assert(_obj != noreg, "must be a valid register");
315 assert(_oop_index >= 0, "must have oop index");
316 __ ld_ptr(_obj, instanceKlass::init_thread_offset_in_bytes() + sizeof(klassOopDesc), G3);
317 __ cmp(G2_thread, G3);
318 __ br(Assembler::notEqual, false, Assembler::pn, call_patch);
319 __ delayed()->nop();
321 // load_klass patches may execute the patched code before it's
322 // copied back into place so we need to jump back into the main
323 // code of the nmethod to continue execution.
324 __ br(Assembler::always, false, Assembler::pt, _patch_site_continuation);
325 __ delayed()->nop();
327 // make sure this extra code gets skipped
328 bytes_to_skip += __ offset() - offset;
329 }
331 // Now emit the patch record telling the runtime how to find the
332 // pieces of the patch. We only need 3 bytes but it has to be
333 // aligned as an instruction so emit 4 bytes.
334 int sizeof_patch_record = 4;
335 bytes_to_skip += sizeof_patch_record;
337 // emit the offsets needed to find the code to patch
338 int being_initialized_entry_offset = __ offset() - being_initialized_entry + sizeof_patch_record;
340 // Emit the patch record. We need to emit a full word, so emit an extra empty byte
341 __ a_byte(0);
342 __ a_byte(being_initialized_entry_offset);
343 __ a_byte(bytes_to_skip);
344 __ a_byte(_bytes_to_copy);
345 address patch_info_pc = __ pc();
346 assert(patch_info_pc - end_of_patch == bytes_to_skip, "incorrect patch info");
348 address entry = __ pc();
349 NativeGeneralJump::insert_unconditional((address)_pc_start, entry);
350 address target = NULL;
351 switch (_id) {
352 case access_field_id: target = Runtime1::entry_for(Runtime1::access_field_patching_id); break;
353 case load_klass_id: target = Runtime1::entry_for(Runtime1::load_klass_patching_id); break;
354 default: ShouldNotReachHere();
355 }
356 __ bind(call_patch);
358 if (CommentedAssembly) {
359 __ block_comment("patch entry point");
360 }
361 __ call(target, relocInfo::runtime_call_type);
362 __ delayed()->nop();
363 assert(_patch_info_offset == (patch_info_pc - __ pc()), "must not change");
364 ce->add_call_info_here(_info);
365 __ br(Assembler::always, false, Assembler::pt, _patch_site_entry);
366 __ delayed()->nop();
367 if (_id == load_klass_id) {
368 CodeSection* cs = __ code_section();
369 address pc = (address)_pc_start;
370 RelocIterator iter(cs, pc, pc + 1);
371 relocInfo::change_reloc_info_for_address(&iter, (address) pc, relocInfo::oop_type, relocInfo::none);
373 pc = (address)(_pc_start + NativeMovConstReg::add_offset);
374 RelocIterator iter2(cs, pc, pc+1);
375 relocInfo::change_reloc_info_for_address(&iter2, (address) pc, relocInfo::oop_type, relocInfo::none);
376 }
378 }
381 void DeoptimizeStub::emit_code(LIR_Assembler* ce) {
382 __ bind(_entry);
383 __ call(SharedRuntime::deopt_blob()->unpack_with_reexecution());
384 __ delayed()->nop();
385 ce->add_call_info_here(_info);
386 debug_only(__ should_not_reach_here());
387 }
390 void ArrayCopyStub::emit_code(LIR_Assembler* ce) {
391 //---------------slow case: call to native-----------------
392 __ bind(_entry);
393 __ mov(src()->as_register(), O0);
394 __ mov(src_pos()->as_register(), O1);
395 __ mov(dst()->as_register(), O2);
396 __ mov(dst_pos()->as_register(), O3);
397 __ mov(length()->as_register(), O4);
399 ce->emit_static_call_stub();
401 __ call(SharedRuntime::get_resolve_static_call_stub(), relocInfo::static_call_type);
402 __ delayed()->nop();
403 ce->add_call_info_here(info());
404 ce->verify_oop_map(info());
406 #ifndef PRODUCT
407 __ set((intptr_t)&Runtime1::_arraycopy_slowcase_cnt, O0);
408 __ ld(O0, 0, O1);
409 __ inc(O1);
410 __ st(O1, 0, O0);
411 #endif
413 __ br(Assembler::always, false, Assembler::pt, _continuation);
414 __ delayed()->nop();
415 }
418 ///////////////////////////////////////////////////////////////////////////////////
419 #ifndef SERIALGC
421 void G1PreBarrierStub::emit_code(LIR_Assembler* ce) {
422 __ bind(_entry);
424 assert(pre_val()->is_register(), "Precondition.");
426 Register pre_val_reg = pre_val()->as_register();
428 ce->mem2reg(addr(), pre_val(), T_OBJECT, patch_code(), info(), false);
429 __ br_on_reg_cond(Assembler::rc_z, /*annul*/false, Assembler::pt,
430 pre_val_reg, _continuation);
431 __ delayed()->nop();
433 __ call(Runtime1::entry_for(Runtime1::Runtime1::g1_pre_barrier_slow_id));
434 __ delayed()->mov(pre_val_reg, G4);
435 __ br(Assembler::always, false, Assembler::pt, _continuation);
436 __ delayed()->nop();
438 }
440 jbyte* G1PostBarrierStub::_byte_map_base = NULL;
442 jbyte* G1PostBarrierStub::byte_map_base_slow() {
443 BarrierSet* bs = Universe::heap()->barrier_set();
444 assert(bs->is_a(BarrierSet::G1SATBCTLogging),
445 "Must be if we're using this.");
446 return ((G1SATBCardTableModRefBS*)bs)->byte_map_base;
447 }
449 void G1PostBarrierStub::emit_code(LIR_Assembler* ce) {
450 __ bind(_entry);
452 assert(addr()->is_register(), "Precondition.");
453 assert(new_val()->is_register(), "Precondition.");
454 Register addr_reg = addr()->as_pointer_register();
455 Register new_val_reg = new_val()->as_register();
456 __ br_on_reg_cond(Assembler::rc_z, /*annul*/false, Assembler::pt,
457 new_val_reg, _continuation);
458 __ delayed()->nop();
460 __ call(Runtime1::entry_for(Runtime1::Runtime1::g1_post_barrier_slow_id));
461 __ delayed()->mov(addr_reg, G4);
462 __ br(Assembler::always, false, Assembler::pt, _continuation);
463 __ delayed()->nop();
464 }
466 #endif // SERIALGC
467 ///////////////////////////////////////////////////////////////////////////////////
469 #undef __