Mercurial > hg > graal-compiler
comparison src/cpu/sparc/vm/c1_CodeStubs_sparc.cpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | 37f87013dfd8 |
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-1:000000000000 | 0:a61af66fc99e |
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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_CodeStubs_sparc.cpp.incl" | |
27 | |
28 #define __ ce->masm()-> | |
29 | |
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 } | |
37 | |
38 | |
39 void RangeCheckStub::emit_code(LIR_Assembler* ce) { | |
40 __ bind(_entry); | |
41 | |
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 } | |
59 | |
60 #ifdef TIERED | |
61 | |
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); | |
69 | |
70 __ br(Assembler::always, true, Assembler::pt, _continuation); | |
71 __ delayed()->nop(); | |
72 } | |
73 | |
74 #endif // TIERED | |
75 | |
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 } | |
89 | |
90 | |
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 } | |
103 | |
104 | |
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); | |
110 | |
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 } | |
121 | |
122 | |
123 // Implementation of ArrayStoreExceptionStub | |
124 | |
125 ArrayStoreExceptionStub::ArrayStoreExceptionStub(CodeEmitInfo* info): | |
126 _info(info) { | |
127 } | |
128 | |
129 | |
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 } | |
140 | |
141 | |
142 | |
143 | |
144 // Implementation of NewInstanceStub | |
145 | |
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 } | |
157 | |
158 | |
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 } | |
168 | |
169 | |
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 } | |
177 | |
178 | |
179 void NewTypeArrayStub::emit_code(LIR_Assembler* ce) { | |
180 __ bind(_entry); | |
181 | |
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 } | |
190 | |
191 | |
192 // Implementation of NewObjectArrayStub | |
193 | |
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 } | |
200 | |
201 | |
202 void NewObjectArrayStub::emit_code(LIR_Assembler* ce) { | |
203 __ bind(_entry); | |
204 | |
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 } | |
213 | |
214 | |
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 } | |
220 | |
221 | |
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 } | |
236 | |
237 | |
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 } | |
248 | |
249 __ delayed()->mov_or_nop(_lock_reg->as_register(), G4); | |
250 __ br(Assembler::always, true, Assembler::pt, _continuation); | |
251 __ delayed()->nop(); | |
252 } | |
253 | |
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 | |
261 | |
262 int PatchingStub::_patch_info_offset = -NativeGeneralJump::instruction_size; | |
263 | |
264 void PatchingStub::align_patch_site(MacroAssembler* ) { | |
265 // patch sites on sparc are always properly aligned. | |
266 } | |
267 | |
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"); | |
273 | |
274 Label call_patch; | |
275 | |
276 int being_initialized_entry = __ offset(); | |
277 | |
278 if (_id == load_klass_id) { | |
279 // produce a copy of the load klass instruction for use by the being initialized case | |
280 address start = __ pc(); | |
281 Address addr = Address(_obj, address(NULL), oop_Relocation::spec(_oop_index)); | |
282 __ sethi(addr, true); | |
283 __ add(addr, _obj, 0); | |
284 | |
285 #ifdef ASSERT | |
286 for (int i = 0; i < _bytes_to_copy; i++) { | |
287 address ptr = (address)(_pc_start + i); | |
288 int a_byte = (*ptr) & 0xFF; | |
289 assert(a_byte == *start++, "should be the same code"); | |
290 } | |
291 #endif | |
292 } else { | |
293 // make a copy the code which is going to be patched. | |
294 for (int i = 0; i < _bytes_to_copy; i++) { | |
295 address ptr = (address)(_pc_start + i); | |
296 int a_byte = (*ptr) & 0xFF; | |
297 __ a_byte (a_byte); | |
298 } | |
299 } | |
300 | |
301 address end_of_patch = __ pc(); | |
302 int bytes_to_skip = 0; | |
303 if (_id == load_klass_id) { | |
304 int offset = __ offset(); | |
305 if (CommentedAssembly) { | |
306 __ block_comment(" being_initialized check"); | |
307 } | |
308 | |
309 // static field accesses have special semantics while the class | |
310 // initializer is being run so we emit a test which can be used to | |
311 // check that this code is being executed by the initializing | |
312 // thread. | |
313 assert(_obj != noreg, "must be a valid register"); | |
314 assert(_oop_index >= 0, "must have oop index"); | |
315 __ ld_ptr(_obj, instanceKlass::init_thread_offset_in_bytes() + sizeof(klassOopDesc), G3); | |
316 __ cmp(G2_thread, G3); | |
317 __ br(Assembler::notEqual, false, Assembler::pn, call_patch); | |
318 __ delayed()->nop(); | |
319 | |
320 // load_klass patches may execute the patched code before it's | |
321 // copied back into place so we need to jump back into the main | |
322 // code of the nmethod to continue execution. | |
323 __ br(Assembler::always, false, Assembler::pt, _patch_site_continuation); | |
324 __ delayed()->nop(); | |
325 | |
326 // make sure this extra code gets skipped | |
327 bytes_to_skip += __ offset() - offset; | |
328 } | |
329 | |
330 // Now emit the patch record telling the runtime how to find the | |
331 // pieces of the patch. We only need 3 bytes but it has to be | |
332 // aligned as an instruction so emit 4 bytes. | |
333 int sizeof_patch_record = 4; | |
334 bytes_to_skip += sizeof_patch_record; | |
335 | |
336 // emit the offsets needed to find the code to patch | |
337 int being_initialized_entry_offset = __ offset() - being_initialized_entry + sizeof_patch_record; | |
338 | |
339 // Emit the patch record. We need to emit a full word, so emit an extra empty byte | |
340 __ a_byte(0); | |
341 __ a_byte(being_initialized_entry_offset); | |
342 __ a_byte(bytes_to_skip); | |
343 __ a_byte(_bytes_to_copy); | |
344 address patch_info_pc = __ pc(); | |
345 assert(patch_info_pc - end_of_patch == bytes_to_skip, "incorrect patch info"); | |
346 | |
347 address entry = __ pc(); | |
348 NativeGeneralJump::insert_unconditional((address)_pc_start, entry); | |
349 address target = NULL; | |
350 switch (_id) { | |
351 case access_field_id: target = Runtime1::entry_for(Runtime1::access_field_patching_id); break; | |
352 case load_klass_id: target = Runtime1::entry_for(Runtime1::load_klass_patching_id); break; | |
353 default: ShouldNotReachHere(); | |
354 } | |
355 __ bind(call_patch); | |
356 | |
357 if (CommentedAssembly) { | |
358 __ block_comment("patch entry point"); | |
359 } | |
360 __ call(target, relocInfo::runtime_call_type); | |
361 __ delayed()->nop(); | |
362 assert(_patch_info_offset == (patch_info_pc - __ pc()), "must not change"); | |
363 ce->add_call_info_here(_info); | |
364 __ br(Assembler::always, false, Assembler::pt, _patch_site_entry); | |
365 __ delayed()->nop(); | |
366 if (_id == load_klass_id) { | |
367 CodeSection* cs = __ code_section(); | |
368 address pc = (address)_pc_start; | |
369 RelocIterator iter(cs, pc, pc + 1); | |
370 relocInfo::change_reloc_info_for_address(&iter, (address) pc, relocInfo::oop_type, relocInfo::none); | |
371 | |
372 pc = (address)(_pc_start + NativeMovConstReg::add_offset); | |
373 RelocIterator iter2(cs, pc, pc+1); | |
374 relocInfo::change_reloc_info_for_address(&iter2, (address) pc, relocInfo::oop_type, relocInfo::none); | |
375 } | |
376 | |
377 } | |
378 | |
379 void ArrayCopyStub::emit_code(LIR_Assembler* ce) { | |
380 //---------------slow case: call to native----------------- | |
381 __ bind(_entry); | |
382 __ mov(src()->as_register(), O0); | |
383 __ mov(src_pos()->as_register(), O1); | |
384 __ mov(dst()->as_register(), O2); | |
385 __ mov(dst_pos()->as_register(), O3); | |
386 __ mov(length()->as_register(), O4); | |
387 | |
388 ce->emit_static_call_stub(); | |
389 | |
390 __ call(SharedRuntime::get_resolve_static_call_stub(), relocInfo::static_call_type); | |
391 __ delayed()->nop(); | |
392 ce->add_call_info_here(info()); | |
393 ce->verify_oop_map(info()); | |
394 | |
395 #ifndef PRODUCT | |
396 __ set((intptr_t)&Runtime1::_arraycopy_slowcase_cnt, O0); | |
397 __ ld(O0, 0, O1); | |
398 __ inc(O1); | |
399 __ st(O1, 0, O0); | |
400 #endif | |
401 | |
402 __ br(Assembler::always, false, Assembler::pt, _continuation); | |
403 __ delayed()->nop(); | |
404 } | |
405 | |
406 | |
407 #undef __ |