Tue, 09 Mar 2010 20:16:19 +0100
6919934: JSR 292 needs to support x86 C1
Summary: This implements JSR 292 support for C1 x86.
Reviewed-by: never, jrose, kvn
duke@435 | 1 | /* |
duke@435 | 2 | * Copyright 1999-2006 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | #include "incls/_precompiled.incl" |
duke@435 | 26 | #include "incls/_generateOptoStub.cpp.incl" |
duke@435 | 27 | |
duke@435 | 28 | //--------------------gen_stub------------------------------- |
duke@435 | 29 | void GraphKit::gen_stub(address C_function, |
duke@435 | 30 | const char *name, |
duke@435 | 31 | int is_fancy_jump, |
duke@435 | 32 | bool pass_tls, |
duke@435 | 33 | bool return_pc) { |
duke@435 | 34 | ResourceMark rm; |
duke@435 | 35 | |
duke@435 | 36 | const TypeTuple *jdomain = C->tf()->domain(); |
duke@435 | 37 | const TypeTuple *jrange = C->tf()->range(); |
duke@435 | 38 | |
duke@435 | 39 | // The procedure start |
duke@435 | 40 | StartNode* start = new (C, 2) StartNode(root(), jdomain); |
duke@435 | 41 | _gvn.set_type_bottom(start); |
duke@435 | 42 | |
duke@435 | 43 | // Make a map, with JVM state |
duke@435 | 44 | uint parm_cnt = jdomain->cnt(); |
duke@435 | 45 | uint max_map = MAX2(2*parm_cnt+1, jrange->cnt()); |
duke@435 | 46 | // %%% SynchronizationEntryBCI is redundant; use InvocationEntryBci in interfaces |
duke@435 | 47 | assert(SynchronizationEntryBCI == InvocationEntryBci, ""); |
duke@435 | 48 | JVMState* jvms = new (C) JVMState(0); |
duke@435 | 49 | jvms->set_bci(InvocationEntryBci); |
duke@435 | 50 | jvms->set_monoff(max_map); |
duke@435 | 51 | jvms->set_endoff(max_map); |
duke@435 | 52 | { |
duke@435 | 53 | SafePointNode *map = new (C, max_map) SafePointNode( max_map, jvms ); |
duke@435 | 54 | jvms->set_map(map); |
duke@435 | 55 | set_jvms(jvms); |
duke@435 | 56 | assert(map == this->map(), "kit.map is set"); |
duke@435 | 57 | } |
duke@435 | 58 | |
duke@435 | 59 | // Make up the parameters |
duke@435 | 60 | uint i; |
duke@435 | 61 | for( i = 0; i < parm_cnt; i++ ) |
duke@435 | 62 | map()->init_req(i, _gvn.transform(new (C, 1) ParmNode(start, i))); |
duke@435 | 63 | for( ; i<map()->req(); i++ ) |
duke@435 | 64 | map()->init_req(i, top()); // For nicer debugging |
duke@435 | 65 | |
duke@435 | 66 | // GraphKit requires memory to be a MergeMemNode: |
duke@435 | 67 | set_all_memory(map()->memory()); |
duke@435 | 68 | |
duke@435 | 69 | // Get base of thread-local storage area |
duke@435 | 70 | Node* thread = _gvn.transform( new (C, 1) ThreadLocalNode() ); |
duke@435 | 71 | |
duke@435 | 72 | const int NoAlias = Compile::AliasIdxBot; |
duke@435 | 73 | |
duke@435 | 74 | Node* adr_last_Java_pc = basic_plus_adr(top(), |
duke@435 | 75 | thread, |
duke@435 | 76 | in_bytes(JavaThread::frame_anchor_offset()) + |
duke@435 | 77 | in_bytes(JavaFrameAnchor::last_Java_pc_offset())); |
duke@435 | 78 | #if defined(SPARC) || defined(IA64) |
duke@435 | 79 | Node* adr_flags = basic_plus_adr(top(), |
duke@435 | 80 | thread, |
duke@435 | 81 | in_bytes(JavaThread::frame_anchor_offset()) + |
duke@435 | 82 | in_bytes(JavaFrameAnchor::flags_offset())); |
duke@435 | 83 | #endif /* defined(SPARC) || defined(IA64) */ |
duke@435 | 84 | |
duke@435 | 85 | |
duke@435 | 86 | // Drop in the last_Java_sp. last_Java_fp is not touched. |
duke@435 | 87 | // Always do this after the other "last_Java_frame" fields are set since |
duke@435 | 88 | // as soon as last_Java_sp != NULL the has_last_Java_frame is true and |
duke@435 | 89 | // users will look at the other fields. |
duke@435 | 90 | // |
duke@435 | 91 | Node *adr_sp = basic_plus_adr(top(), thread, in_bytes(JavaThread::last_Java_sp_offset())); |
duke@435 | 92 | #ifndef IA64 |
duke@435 | 93 | Node *last_sp = basic_plus_adr(top(), frameptr(), (intptr_t) STACK_BIAS); |
duke@435 | 94 | store_to_memory(NULL, adr_sp, last_sp, T_ADDRESS, NoAlias); |
duke@435 | 95 | #endif |
duke@435 | 96 | |
duke@435 | 97 | // Set _thread_in_native |
duke@435 | 98 | // The order of stores into TLS is critical! Setting _thread_in_native MUST |
duke@435 | 99 | // be last, because a GC is allowed at any time after setting it and the GC |
duke@435 | 100 | // will require last_Java_pc and last_Java_sp. |
duke@435 | 101 | Node* adr_state = basic_plus_adr(top(), thread, in_bytes(JavaThread::thread_state_offset())); |
duke@435 | 102 | |
duke@435 | 103 | //----------------------------- |
duke@435 | 104 | // Compute signature for C call. Varies from the Java signature! |
duke@435 | 105 | const Type **fields = TypeTuple::fields(2*parm_cnt+2); |
duke@435 | 106 | uint cnt = TypeFunc::Parms; |
duke@435 | 107 | // The C routines gets the base of thread-local storage passed in as an |
duke@435 | 108 | // extra argument. Not all calls need it, but its cheap to add here. |
duke@435 | 109 | for( ; cnt<parm_cnt; cnt++ ) |
duke@435 | 110 | fields[cnt] = jdomain->field_at(cnt); |
duke@435 | 111 | fields[cnt++] = TypeRawPtr::BOTTOM; // Thread-local storage |
duke@435 | 112 | // Also pass in the caller's PC, if asked for. |
duke@435 | 113 | if( return_pc ) |
duke@435 | 114 | fields[cnt++] = TypeRawPtr::BOTTOM; // Return PC |
duke@435 | 115 | |
duke@435 | 116 | const TypeTuple* domain = TypeTuple::make(cnt,fields); |
duke@435 | 117 | // The C routine we are about to call cannot return an oop; it can block on |
duke@435 | 118 | // exit and a GC will trash the oop while it sits in C-land. Instead, we |
duke@435 | 119 | // return the oop through TLS for runtime calls. |
duke@435 | 120 | // Also, C routines returning integer subword values leave the high |
duke@435 | 121 | // order bits dirty; these must be cleaned up by explicit sign extension. |
duke@435 | 122 | const Type* retval = (jrange->cnt() == TypeFunc::Parms) ? Type::TOP : jrange->field_at(TypeFunc::Parms); |
duke@435 | 123 | // Make a private copy of jrange->fields(); |
duke@435 | 124 | const Type **rfields = TypeTuple::fields(jrange->cnt() - TypeFunc::Parms); |
duke@435 | 125 | // Fixup oop returns |
duke@435 | 126 | int retval_ptr = retval->isa_oop_ptr(); |
duke@435 | 127 | if( retval_ptr ) { |
duke@435 | 128 | assert( pass_tls, "Oop must be returned thru TLS" ); |
duke@435 | 129 | // Fancy-jumps return address; others return void |
duke@435 | 130 | rfields[TypeFunc::Parms] = is_fancy_jump ? TypeRawPtr::BOTTOM : Type::TOP; |
duke@435 | 131 | |
duke@435 | 132 | } else if( retval->isa_int() ) { // Returning any integer subtype? |
duke@435 | 133 | // "Fatten" byte, char & short return types to 'int' to show that |
duke@435 | 134 | // the native C code can return values with junk high order bits. |
duke@435 | 135 | // We'll sign-extend it below later. |
duke@435 | 136 | rfields[TypeFunc::Parms] = TypeInt::INT; // It's "dirty" and needs sign-ext |
duke@435 | 137 | |
duke@435 | 138 | } else if( jrange->cnt() >= TypeFunc::Parms+1 ) { // Else copy other types |
duke@435 | 139 | rfields[TypeFunc::Parms] = jrange->field_at(TypeFunc::Parms); |
duke@435 | 140 | if( jrange->cnt() == TypeFunc::Parms+2 ) |
duke@435 | 141 | rfields[TypeFunc::Parms+1] = jrange->field_at(TypeFunc::Parms+1); |
duke@435 | 142 | } |
duke@435 | 143 | const TypeTuple* range = TypeTuple::make(jrange->cnt(),rfields); |
duke@435 | 144 | |
duke@435 | 145 | // Final C signature |
duke@435 | 146 | const TypeFunc *c_sig = TypeFunc::make(domain,range); |
duke@435 | 147 | |
duke@435 | 148 | //----------------------------- |
duke@435 | 149 | // Make the call node |
duke@435 | 150 | CallRuntimeNode *call = new (C, c_sig->domain()->cnt()) |
duke@435 | 151 | CallRuntimeNode(c_sig, C_function, name, TypePtr::BOTTOM); |
duke@435 | 152 | //----------------------------- |
duke@435 | 153 | |
duke@435 | 154 | // Fix-up the debug info for the call |
duke@435 | 155 | call->set_jvms( new (C) JVMState(0) ); |
duke@435 | 156 | call->jvms()->set_bci(0); |
duke@435 | 157 | call->jvms()->set_offsets(cnt); |
duke@435 | 158 | |
duke@435 | 159 | // Set fixed predefined input arguments |
duke@435 | 160 | cnt = 0; |
duke@435 | 161 | for( i=0; i<TypeFunc::Parms; i++ ) |
duke@435 | 162 | call->init_req( cnt++, map()->in(i) ); |
duke@435 | 163 | // A little too aggressive on the parm copy; return address is not an input |
duke@435 | 164 | call->set_req(TypeFunc::ReturnAdr, top()); |
duke@435 | 165 | for( ; i<parm_cnt; i++ ) // Regular input arguments |
duke@435 | 166 | call->init_req( cnt++, map()->in(i) ); |
duke@435 | 167 | |
duke@435 | 168 | call->init_req( cnt++, thread ); |
duke@435 | 169 | if( return_pc ) // Return PC, if asked for |
duke@435 | 170 | call->init_req( cnt++, returnadr() ); |
duke@435 | 171 | _gvn.transform_no_reclaim(call); |
duke@435 | 172 | |
duke@435 | 173 | |
duke@435 | 174 | //----------------------------- |
duke@435 | 175 | // Now set up the return results |
duke@435 | 176 | set_control( _gvn.transform( new (C, 1) ProjNode(call,TypeFunc::Control)) ); |
duke@435 | 177 | set_i_o( _gvn.transform( new (C, 1) ProjNode(call,TypeFunc::I_O )) ); |
duke@435 | 178 | set_all_memory_call(call); |
duke@435 | 179 | if (range->cnt() > TypeFunc::Parms) { |
duke@435 | 180 | Node* retnode = _gvn.transform( new (C, 1) ProjNode(call,TypeFunc::Parms) ); |
duke@435 | 181 | // C-land is allowed to return sub-word values. Convert to integer type. |
duke@435 | 182 | assert( retval != Type::TOP, "" ); |
duke@435 | 183 | if (retval == TypeInt::BOOL) { |
duke@435 | 184 | retnode = _gvn.transform( new (C, 3) AndINode(retnode, intcon(0xFF)) ); |
duke@435 | 185 | } else if (retval == TypeInt::CHAR) { |
duke@435 | 186 | retnode = _gvn.transform( new (C, 3) AndINode(retnode, intcon(0xFFFF)) ); |
duke@435 | 187 | } else if (retval == TypeInt::BYTE) { |
duke@435 | 188 | retnode = _gvn.transform( new (C, 3) LShiftINode(retnode, intcon(24)) ); |
duke@435 | 189 | retnode = _gvn.transform( new (C, 3) RShiftINode(retnode, intcon(24)) ); |
duke@435 | 190 | } else if (retval == TypeInt::SHORT) { |
duke@435 | 191 | retnode = _gvn.transform( new (C, 3) LShiftINode(retnode, intcon(16)) ); |
duke@435 | 192 | retnode = _gvn.transform( new (C, 3) RShiftINode(retnode, intcon(16)) ); |
duke@435 | 193 | } |
duke@435 | 194 | map()->set_req( TypeFunc::Parms, retnode ); |
duke@435 | 195 | } |
duke@435 | 196 | |
duke@435 | 197 | //----------------------------- |
duke@435 | 198 | |
duke@435 | 199 | // Clear last_Java_sp |
duke@435 | 200 | #ifdef IA64 |
duke@435 | 201 | if( os::is_MP() ) insert_mem_bar(Op_MemBarRelease); |
duke@435 | 202 | #endif |
duke@435 | 203 | |
duke@435 | 204 | store_to_memory(NULL, adr_sp, null(), T_ADDRESS, NoAlias); |
duke@435 | 205 | #ifdef IA64 |
duke@435 | 206 | if (os::is_MP() && UseMembar) insert_mem_bar(new MemBarVolatileNode()); |
duke@435 | 207 | #endif // def IA64 |
duke@435 | 208 | // Clear last_Java_pc and (optionally)_flags |
duke@435 | 209 | store_to_memory(NULL, adr_last_Java_pc, null(), T_ADDRESS, NoAlias); |
duke@435 | 210 | #if defined(SPARC) || defined(IA64) |
duke@435 | 211 | store_to_memory(NULL, adr_flags, intcon(0), T_INT, NoAlias); |
duke@435 | 212 | #endif /* defined(SPARC) || defined(IA64) */ |
duke@435 | 213 | #ifdef IA64 |
duke@435 | 214 | Node* adr_last_Java_fp = basic_plus_adr(top(), thread, in_bytes(JavaThread::last_Java_fp_offset())); |
duke@435 | 215 | if( os::is_MP() ) insert_mem_bar(Op_MemBarRelease); |
duke@435 | 216 | store_to_memory(NULL, adr_last_Java_fp, null(), T_ADDRESS, NoAlias); |
duke@435 | 217 | #endif |
duke@435 | 218 | |
duke@435 | 219 | // For is-fancy-jump, the C-return value is also the branch target |
duke@435 | 220 | Node* target = map()->in(TypeFunc::Parms); |
duke@435 | 221 | // Runtime call returning oop in TLS? Fetch it out |
duke@435 | 222 | if( pass_tls ) { |
duke@435 | 223 | Node* adr = basic_plus_adr(top(), thread, in_bytes(JavaThread::vm_result_offset())); |
duke@435 | 224 | Node* vm_result = make_load(NULL, adr, TypeOopPtr::BOTTOM, T_OBJECT, NoAlias, false); |
duke@435 | 225 | map()->set_req(TypeFunc::Parms, vm_result); // vm_result passed as result |
duke@435 | 226 | // clear thread-local-storage(tls) |
duke@435 | 227 | store_to_memory(NULL, adr, null(), T_ADDRESS, NoAlias); |
duke@435 | 228 | } |
duke@435 | 229 | |
duke@435 | 230 | //----------------------------- |
duke@435 | 231 | // check exception |
duke@435 | 232 | Node* adr = basic_plus_adr(top(), thread, in_bytes(Thread::pending_exception_offset())); |
duke@435 | 233 | Node* pending = make_load(NULL, adr, TypeOopPtr::BOTTOM, T_OBJECT, NoAlias, false); |
duke@435 | 234 | |
duke@435 | 235 | Node* exit_memory = reset_memory(); |
duke@435 | 236 | |
duke@435 | 237 | Node* cmp = _gvn.transform( new (C, 3) CmpPNode(pending, null()) ); |
duke@435 | 238 | Node* bo = _gvn.transform( new (C, 2) BoolNode(cmp, BoolTest::ne) ); |
duke@435 | 239 | IfNode *iff = create_and_map_if(control(), bo, PROB_MIN, COUNT_UNKNOWN); |
duke@435 | 240 | |
duke@435 | 241 | Node* if_null = _gvn.transform( new (C, 1) IfFalseNode(iff) ); |
duke@435 | 242 | Node* if_not_null = _gvn.transform( new (C, 1) IfTrueNode(iff) ); |
duke@435 | 243 | |
duke@435 | 244 | assert (StubRoutines::forward_exception_entry() != NULL, "must be generated before"); |
duke@435 | 245 | Node *exc_target = makecon(TypeRawPtr::make( StubRoutines::forward_exception_entry() )); |
duke@435 | 246 | Node *to_exc = new (C, TypeFunc::Parms+2) TailCallNode(if_not_null, |
duke@435 | 247 | i_o(), |
duke@435 | 248 | exit_memory, |
duke@435 | 249 | frameptr(), |
duke@435 | 250 | returnadr(), |
duke@435 | 251 | exc_target, null()); |
duke@435 | 252 | root()->add_req(_gvn.transform(to_exc)); // bind to root to keep live |
duke@435 | 253 | C->init_start(start); |
duke@435 | 254 | |
duke@435 | 255 | //----------------------------- |
duke@435 | 256 | // If this is a normal subroutine return, issue the return and be done. |
duke@435 | 257 | Node *ret; |
duke@435 | 258 | switch( is_fancy_jump ) { |
duke@435 | 259 | case 0: // Make a return instruction |
duke@435 | 260 | // Return to caller, free any space for return address |
duke@435 | 261 | ret = new (C, TypeFunc::Parms) ReturnNode(TypeFunc::Parms, if_null, |
duke@435 | 262 | i_o(), |
duke@435 | 263 | exit_memory, |
duke@435 | 264 | frameptr(), |
duke@435 | 265 | returnadr()); |
duke@435 | 266 | if (C->tf()->range()->cnt() > TypeFunc::Parms) |
duke@435 | 267 | ret->add_req( map()->in(TypeFunc::Parms) ); |
duke@435 | 268 | break; |
duke@435 | 269 | case 1: // This is a fancy tail-call jump. Jump to computed address. |
duke@435 | 270 | // Jump to new callee; leave old return address alone. |
duke@435 | 271 | ret = new (C, TypeFunc::Parms+2) TailCallNode(if_null, |
duke@435 | 272 | i_o(), |
duke@435 | 273 | exit_memory, |
duke@435 | 274 | frameptr(), |
duke@435 | 275 | returnadr(), |
duke@435 | 276 | target, map()->in(TypeFunc::Parms)); |
duke@435 | 277 | break; |
duke@435 | 278 | case 2: // Pop return address & jump |
duke@435 | 279 | // Throw away old return address; jump to new computed address |
duke@435 | 280 | //assert(C_function == CAST_FROM_FN_PTR(address, OptoRuntime::rethrow_C), "fancy_jump==2 only for rethrow"); |
duke@435 | 281 | ret = new (C, TypeFunc::Parms+2) TailJumpNode(if_null, |
duke@435 | 282 | i_o(), |
duke@435 | 283 | exit_memory, |
duke@435 | 284 | frameptr(), |
duke@435 | 285 | target, map()->in(TypeFunc::Parms)); |
duke@435 | 286 | break; |
duke@435 | 287 | default: |
duke@435 | 288 | ShouldNotReachHere(); |
duke@435 | 289 | } |
duke@435 | 290 | root()->add_req(_gvn.transform(ret)); |
duke@435 | 291 | } |