Mercurial > hg > graal-compiler
comparison src/share/vm/opto/generateOptoStub.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 | c18cbe5936b8 |
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1 /* | |
2 * Copyright 1999-2006 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/_generateOptoStub.cpp.incl" | |
27 | |
28 //--------------------gen_stub------------------------------- | |
29 void GraphKit::gen_stub(address C_function, | |
30 const char *name, | |
31 int is_fancy_jump, | |
32 bool pass_tls, | |
33 bool return_pc) { | |
34 ResourceMark rm; | |
35 | |
36 const TypeTuple *jdomain = C->tf()->domain(); | |
37 const TypeTuple *jrange = C->tf()->range(); | |
38 | |
39 // The procedure start | |
40 StartNode* start = new (C, 2) StartNode(root(), jdomain); | |
41 _gvn.set_type_bottom(start); | |
42 | |
43 // Make a map, with JVM state | |
44 uint parm_cnt = jdomain->cnt(); | |
45 uint max_map = MAX2(2*parm_cnt+1, jrange->cnt()); | |
46 // %%% SynchronizationEntryBCI is redundant; use InvocationEntryBci in interfaces | |
47 assert(SynchronizationEntryBCI == InvocationEntryBci, ""); | |
48 JVMState* jvms = new (C) JVMState(0); | |
49 jvms->set_bci(InvocationEntryBci); | |
50 jvms->set_monoff(max_map); | |
51 jvms->set_endoff(max_map); | |
52 { | |
53 SafePointNode *map = new (C, max_map) SafePointNode( max_map, jvms ); | |
54 jvms->set_map(map); | |
55 set_jvms(jvms); | |
56 assert(map == this->map(), "kit.map is set"); | |
57 } | |
58 | |
59 // Make up the parameters | |
60 uint i; | |
61 for( i = 0; i < parm_cnt; i++ ) | |
62 map()->init_req(i, _gvn.transform(new (C, 1) ParmNode(start, i))); | |
63 for( ; i<map()->req(); i++ ) | |
64 map()->init_req(i, top()); // For nicer debugging | |
65 | |
66 // GraphKit requires memory to be a MergeMemNode: | |
67 set_all_memory(map()->memory()); | |
68 | |
69 // Get base of thread-local storage area | |
70 Node* thread = _gvn.transform( new (C, 1) ThreadLocalNode() ); | |
71 | |
72 const int NoAlias = Compile::AliasIdxBot; | |
73 | |
74 Node* adr_last_Java_pc = basic_plus_adr(top(), | |
75 thread, | |
76 in_bytes(JavaThread::frame_anchor_offset()) + | |
77 in_bytes(JavaFrameAnchor::last_Java_pc_offset())); | |
78 #if defined(SPARC) || defined(IA64) | |
79 Node* adr_flags = basic_plus_adr(top(), | |
80 thread, | |
81 in_bytes(JavaThread::frame_anchor_offset()) + | |
82 in_bytes(JavaFrameAnchor::flags_offset())); | |
83 #endif /* defined(SPARC) || defined(IA64) */ | |
84 | |
85 | |
86 // Drop in the last_Java_sp. last_Java_fp is not touched. | |
87 // Always do this after the other "last_Java_frame" fields are set since | |
88 // as soon as last_Java_sp != NULL the has_last_Java_frame is true and | |
89 // users will look at the other fields. | |
90 // | |
91 Node *adr_sp = basic_plus_adr(top(), thread, in_bytes(JavaThread::last_Java_sp_offset())); | |
92 #ifndef IA64 | |
93 Node *last_sp = basic_plus_adr(top(), frameptr(), (intptr_t) STACK_BIAS); | |
94 store_to_memory(NULL, adr_sp, last_sp, T_ADDRESS, NoAlias); | |
95 #endif | |
96 | |
97 // Set _thread_in_native | |
98 // The order of stores into TLS is critical! Setting _thread_in_native MUST | |
99 // be last, because a GC is allowed at any time after setting it and the GC | |
100 // will require last_Java_pc and last_Java_sp. | |
101 Node* adr_state = basic_plus_adr(top(), thread, in_bytes(JavaThread::thread_state_offset())); | |
102 | |
103 //----------------------------- | |
104 // Compute signature for C call. Varies from the Java signature! | |
105 const Type **fields = TypeTuple::fields(2*parm_cnt+2); | |
106 uint cnt = TypeFunc::Parms; | |
107 // The C routines gets the base of thread-local storage passed in as an | |
108 // extra argument. Not all calls need it, but its cheap to add here. | |
109 for( ; cnt<parm_cnt; cnt++ ) | |
110 fields[cnt] = jdomain->field_at(cnt); | |
111 fields[cnt++] = TypeRawPtr::BOTTOM; // Thread-local storage | |
112 // Also pass in the caller's PC, if asked for. | |
113 if( return_pc ) | |
114 fields[cnt++] = TypeRawPtr::BOTTOM; // Return PC | |
115 | |
116 const TypeTuple* domain = TypeTuple::make(cnt,fields); | |
117 // The C routine we are about to call cannot return an oop; it can block on | |
118 // exit and a GC will trash the oop while it sits in C-land. Instead, we | |
119 // return the oop through TLS for runtime calls. | |
120 // Also, C routines returning integer subword values leave the high | |
121 // order bits dirty; these must be cleaned up by explicit sign extension. | |
122 const Type* retval = (jrange->cnt() == TypeFunc::Parms) ? Type::TOP : jrange->field_at(TypeFunc::Parms); | |
123 // Make a private copy of jrange->fields(); | |
124 const Type **rfields = TypeTuple::fields(jrange->cnt() - TypeFunc::Parms); | |
125 // Fixup oop returns | |
126 int retval_ptr = retval->isa_oop_ptr(); | |
127 if( retval_ptr ) { | |
128 assert( pass_tls, "Oop must be returned thru TLS" ); | |
129 // Fancy-jumps return address; others return void | |
130 rfields[TypeFunc::Parms] = is_fancy_jump ? TypeRawPtr::BOTTOM : Type::TOP; | |
131 | |
132 } else if( retval->isa_int() ) { // Returning any integer subtype? | |
133 // "Fatten" byte, char & short return types to 'int' to show that | |
134 // the native C code can return values with junk high order bits. | |
135 // We'll sign-extend it below later. | |
136 rfields[TypeFunc::Parms] = TypeInt::INT; // It's "dirty" and needs sign-ext | |
137 | |
138 } else if( jrange->cnt() >= TypeFunc::Parms+1 ) { // Else copy other types | |
139 rfields[TypeFunc::Parms] = jrange->field_at(TypeFunc::Parms); | |
140 if( jrange->cnt() == TypeFunc::Parms+2 ) | |
141 rfields[TypeFunc::Parms+1] = jrange->field_at(TypeFunc::Parms+1); | |
142 } | |
143 const TypeTuple* range = TypeTuple::make(jrange->cnt(),rfields); | |
144 | |
145 // Final C signature | |
146 const TypeFunc *c_sig = TypeFunc::make(domain,range); | |
147 | |
148 //----------------------------- | |
149 // Make the call node | |
150 CallRuntimeNode *call = new (C, c_sig->domain()->cnt()) | |
151 CallRuntimeNode(c_sig, C_function, name, TypePtr::BOTTOM); | |
152 //----------------------------- | |
153 | |
154 // Fix-up the debug info for the call | |
155 call->set_jvms( new (C) JVMState(0) ); | |
156 call->jvms()->set_bci(0); | |
157 call->jvms()->set_offsets(cnt); | |
158 | |
159 // Set fixed predefined input arguments | |
160 cnt = 0; | |
161 for( i=0; i<TypeFunc::Parms; i++ ) | |
162 call->init_req( cnt++, map()->in(i) ); | |
163 // A little too aggressive on the parm copy; return address is not an input | |
164 call->set_req(TypeFunc::ReturnAdr, top()); | |
165 for( ; i<parm_cnt; i++ ) // Regular input arguments | |
166 call->init_req( cnt++, map()->in(i) ); | |
167 | |
168 call->init_req( cnt++, thread ); | |
169 if( return_pc ) // Return PC, if asked for | |
170 call->init_req( cnt++, returnadr() ); | |
171 _gvn.transform_no_reclaim(call); | |
172 | |
173 | |
174 //----------------------------- | |
175 // Now set up the return results | |
176 set_control( _gvn.transform( new (C, 1) ProjNode(call,TypeFunc::Control)) ); | |
177 set_i_o( _gvn.transform( new (C, 1) ProjNode(call,TypeFunc::I_O )) ); | |
178 set_all_memory_call(call); | |
179 if (range->cnt() > TypeFunc::Parms) { | |
180 Node* retnode = _gvn.transform( new (C, 1) ProjNode(call,TypeFunc::Parms) ); | |
181 // C-land is allowed to return sub-word values. Convert to integer type. | |
182 assert( retval != Type::TOP, "" ); | |
183 if (retval == TypeInt::BOOL) { | |
184 retnode = _gvn.transform( new (C, 3) AndINode(retnode, intcon(0xFF)) ); | |
185 } else if (retval == TypeInt::CHAR) { | |
186 retnode = _gvn.transform( new (C, 3) AndINode(retnode, intcon(0xFFFF)) ); | |
187 } else if (retval == TypeInt::BYTE) { | |
188 retnode = _gvn.transform( new (C, 3) LShiftINode(retnode, intcon(24)) ); | |
189 retnode = _gvn.transform( new (C, 3) RShiftINode(retnode, intcon(24)) ); | |
190 } else if (retval == TypeInt::SHORT) { | |
191 retnode = _gvn.transform( new (C, 3) LShiftINode(retnode, intcon(16)) ); | |
192 retnode = _gvn.transform( new (C, 3) RShiftINode(retnode, intcon(16)) ); | |
193 } | |
194 map()->set_req( TypeFunc::Parms, retnode ); | |
195 } | |
196 | |
197 //----------------------------- | |
198 | |
199 // Clear last_Java_sp | |
200 #ifdef IA64 | |
201 if( os::is_MP() ) insert_mem_bar(Op_MemBarRelease); | |
202 #endif | |
203 | |
204 store_to_memory(NULL, adr_sp, null(), T_ADDRESS, NoAlias); | |
205 #ifdef IA64 | |
206 if (os::is_MP() && UseMembar) insert_mem_bar(new MemBarVolatileNode()); | |
207 #endif // def IA64 | |
208 // Clear last_Java_pc and (optionally)_flags | |
209 store_to_memory(NULL, adr_last_Java_pc, null(), T_ADDRESS, NoAlias); | |
210 #if defined(SPARC) || defined(IA64) | |
211 store_to_memory(NULL, adr_flags, intcon(0), T_INT, NoAlias); | |
212 #endif /* defined(SPARC) || defined(IA64) */ | |
213 #ifdef IA64 | |
214 Node* adr_last_Java_fp = basic_plus_adr(top(), thread, in_bytes(JavaThread::last_Java_fp_offset())); | |
215 if( os::is_MP() ) insert_mem_bar(Op_MemBarRelease); | |
216 store_to_memory(NULL, adr_last_Java_fp, null(), T_ADDRESS, NoAlias); | |
217 #endif | |
218 | |
219 // For is-fancy-jump, the C-return value is also the branch target | |
220 Node* target = map()->in(TypeFunc::Parms); | |
221 // Runtime call returning oop in TLS? Fetch it out | |
222 if( pass_tls ) { | |
223 Node* adr = basic_plus_adr(top(), thread, in_bytes(JavaThread::vm_result_offset())); | |
224 Node* vm_result = make_load(NULL, adr, TypeOopPtr::BOTTOM, T_OBJECT, NoAlias, false); | |
225 map()->set_req(TypeFunc::Parms, vm_result); // vm_result passed as result | |
226 // clear thread-local-storage(tls) | |
227 store_to_memory(NULL, adr, null(), T_ADDRESS, NoAlias); | |
228 } | |
229 | |
230 //----------------------------- | |
231 // check exception | |
232 Node* adr = basic_plus_adr(top(), thread, in_bytes(Thread::pending_exception_offset())); | |
233 Node* pending = make_load(NULL, adr, TypeOopPtr::BOTTOM, T_OBJECT, NoAlias, false); | |
234 | |
235 Node* exit_memory = reset_memory(); | |
236 | |
237 Node* cmp = _gvn.transform( new (C, 3) CmpPNode(pending, null()) ); | |
238 Node* bo = _gvn.transform( new (C, 2) BoolNode(cmp, BoolTest::ne) ); | |
239 IfNode *iff = create_and_map_if(control(), bo, PROB_MIN, COUNT_UNKNOWN); | |
240 | |
241 Node* if_null = _gvn.transform( new (C, 1) IfFalseNode(iff) ); | |
242 Node* if_not_null = _gvn.transform( new (C, 1) IfTrueNode(iff) ); | |
243 | |
244 assert (StubRoutines::forward_exception_entry() != NULL, "must be generated before"); | |
245 Node *exc_target = makecon(TypeRawPtr::make( StubRoutines::forward_exception_entry() )); | |
246 Node *to_exc = new (C, TypeFunc::Parms+2) TailCallNode(if_not_null, | |
247 i_o(), | |
248 exit_memory, | |
249 frameptr(), | |
250 returnadr(), | |
251 exc_target, null()); | |
252 root()->add_req(_gvn.transform(to_exc)); // bind to root to keep live | |
253 C->init_start(start); | |
254 | |
255 //----------------------------- | |
256 // If this is a normal subroutine return, issue the return and be done. | |
257 Node *ret; | |
258 switch( is_fancy_jump ) { | |
259 case 0: // Make a return instruction | |
260 // Return to caller, free any space for return address | |
261 ret = new (C, TypeFunc::Parms) ReturnNode(TypeFunc::Parms, if_null, | |
262 i_o(), | |
263 exit_memory, | |
264 frameptr(), | |
265 returnadr()); | |
266 if (C->tf()->range()->cnt() > TypeFunc::Parms) | |
267 ret->add_req( map()->in(TypeFunc::Parms) ); | |
268 break; | |
269 case 1: // This is a fancy tail-call jump. Jump to computed address. | |
270 // Jump to new callee; leave old return address alone. | |
271 ret = new (C, TypeFunc::Parms+2) TailCallNode(if_null, | |
272 i_o(), | |
273 exit_memory, | |
274 frameptr(), | |
275 returnadr(), | |
276 target, map()->in(TypeFunc::Parms)); | |
277 break; | |
278 case 2: // Pop return address & jump | |
279 // Throw away old return address; jump to new computed address | |
280 //assert(C_function == CAST_FROM_FN_PTR(address, OptoRuntime::rethrow_C), "fancy_jump==2 only for rethrow"); | |
281 ret = new (C, TypeFunc::Parms+2) TailJumpNode(if_null, | |
282 i_o(), | |
283 exit_memory, | |
284 frameptr(), | |
285 target, map()->in(TypeFunc::Parms)); | |
286 break; | |
287 default: | |
288 ShouldNotReachHere(); | |
289 } | |
290 root()->add_req(_gvn.transform(ret)); | |
291 } |