Fri, 29 Apr 2016 00:06:10 +0800
Added MIPS 64-bit port.
aoqi@1 | 1 | /* |
aoqi@1 | 2 | * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. |
aoqi@1 | 3 | * Copyright (c) 2015, 2016, Loongson Technology. All rights reserved. |
aoqi@1 | 4 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@1 | 5 | * |
aoqi@1 | 6 | * This code is free software; you can redistribute it and/or modify it |
aoqi@1 | 7 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@1 | 8 | * published by the Free Software Foundation. |
aoqi@1 | 9 | * |
aoqi@1 | 10 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@1 | 11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@1 | 12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@1 | 13 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@1 | 14 | * accompanied this code). |
aoqi@1 | 15 | * |
aoqi@1 | 16 | * You should have received a copy of the GNU General Public License version |
aoqi@1 | 17 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@1 | 18 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@1 | 19 | * |
aoqi@1 | 20 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@1 | 21 | * or visit www.oracle.com if you need additional information or have any |
aoqi@1 | 22 | * questions. |
aoqi@1 | 23 | * |
aoqi@1 | 24 | */ |
aoqi@1 | 25 | |
aoqi@1 | 26 | #include "precompiled.hpp" |
aoqi@1 | 27 | #include "c1/c1_CodeStubs.hpp" |
aoqi@1 | 28 | #include "c1/c1_FrameMap.hpp" |
aoqi@1 | 29 | #include "c1/c1_LIRAssembler.hpp" |
aoqi@1 | 30 | #include "c1/c1_MacroAssembler.hpp" |
aoqi@1 | 31 | #include "c1/c1_Runtime1.hpp" |
aoqi@1 | 32 | #include "nativeInst_mips.hpp" |
aoqi@1 | 33 | #include "runtime/sharedRuntime.hpp" |
aoqi@1 | 34 | #include "vmreg_mips.inline.hpp" |
aoqi@1 | 35 | #ifndef SERIALGC |
aoqi@1 | 36 | #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp" |
aoqi@1 | 37 | #endif |
aoqi@1 | 38 | |
aoqi@1 | 39 | |
aoqi@1 | 40 | #define __ ce->masm()-> |
aoqi@1 | 41 | |
aoqi@1 | 42 | float ConversionStub::float_zero = 0.0; |
aoqi@1 | 43 | double ConversionStub::double_zero = 0.0; |
aoqi@1 | 44 | |
aoqi@1 | 45 | void ConversionStub::emit_code(LIR_Assembler* ce) { |
aoqi@1 | 46 | __ bind(_entry); |
aoqi@1 | 47 | assert(bytecode() == Bytecodes::_f2i || bytecode() == Bytecodes::_d2i, "other conversions do not require stub"); |
aoqi@1 | 48 | } |
aoqi@1 | 49 | |
aoqi@1 | 50 | #ifdef TIERED |
aoqi@1 | 51 | void CounterOverflowStub::emit_code(LIR_Assembler* ce) { |
aoqi@1 | 52 | __ bind(_entry); |
aoqi@1 | 53 | ce->store_parameter(_bci, 0); |
aoqi@1 | 54 | //__ call(RuntimeAddress(Runtime1::entry_for(Runtime1::counter_overflow_id))); |
aoqi@1 | 55 | __ call(Runtime1::entry_for(Runtime1::counter_overflow_id), relocInfo::runtime_call_type); |
aoqi@1 | 56 | __ delayed()->nop(); |
aoqi@1 | 57 | ce->add_call_info_here(_info); |
aoqi@1 | 58 | ce->verify_oop_map(_info); |
aoqi@1 | 59 | |
aoqi@1 | 60 | //__ jmp(_continuation); |
aoqi@1 | 61 | __ b_far(_continuation); |
aoqi@1 | 62 | __ delayed()->nop(); |
aoqi@1 | 63 | } |
aoqi@1 | 64 | #endif // TIERED |
aoqi@1 | 65 | |
aoqi@1 | 66 | |
aoqi@1 | 67 | |
aoqi@1 | 68 | RangeCheckStub::RangeCheckStub(CodeEmitInfo* info, LIR_Opr index, |
aoqi@1 | 69 | bool throw_index_out_of_bounds_exception) |
aoqi@1 | 70 | : _throw_index_out_of_bounds_exception(throw_index_out_of_bounds_exception) |
aoqi@1 | 71 | , _index(index) |
aoqi@1 | 72 | { |
aoqi@1 | 73 | _info = info == NULL ? NULL : new CodeEmitInfo(info); |
aoqi@1 | 74 | } |
aoqi@1 | 75 | |
aoqi@1 | 76 | |
aoqi@1 | 77 | void RangeCheckStub::emit_code(LIR_Assembler* ce) { |
aoqi@1 | 78 | #ifdef OPT_RANGECHECK |
aoqi@1 | 79 | if (_throw_pc != -1) { |
aoqi@1 | 80 | ce->compilation()->null_check_table()->append(_throw_pc, __ offset()); |
aoqi@1 | 81 | } |
aoqi@1 | 82 | #endif |
aoqi@1 | 83 | __ bind(_entry); |
aoqi@1 | 84 | //// Pass the array index in eax since the runtime stub will add register state to the stack |
aoqi@1 | 85 | // pass the array index on stack because all registers must be preserved |
aoqi@1 | 86 | |
aoqi@1 | 87 | if (_index->is_cpu_register()) { |
aoqi@1 | 88 | ce->store_parameter(_index->as_register(), 0); |
aoqi@1 | 89 | } else { |
aoqi@1 | 90 | ce->store_parameter(_index->as_jint(), 0); |
aoqi@1 | 91 | } |
aoqi@1 | 92 | |
aoqi@1 | 93 | if (_throw_index_out_of_bounds_exception) { |
aoqi@1 | 94 | __ call(Runtime1::entry_for(Runtime1::throw_index_exception_id), relocInfo::runtime_call_type); |
aoqi@1 | 95 | } else { |
aoqi@1 | 96 | __ call(Runtime1::entry_for(Runtime1::throw_range_check_failed_id), relocInfo::runtime_call_type); |
aoqi@1 | 97 | } |
aoqi@1 | 98 | __ delayed()->nop(); |
aoqi@1 | 99 | ce->add_call_info_here(_info); |
aoqi@1 | 100 | debug_only(__ should_not_reach_here()); |
aoqi@1 | 101 | } |
aoqi@1 | 102 | |
aoqi@1 | 103 | PredicateFailedStub::PredicateFailedStub(CodeEmitInfo* info) { // Fu:20130814 |
aoqi@1 | 104 | _info = new CodeEmitInfo(info); |
aoqi@1 | 105 | } |
aoqi@1 | 106 | |
aoqi@1 | 107 | void PredicateFailedStub::emit_code(LIR_Assembler* ce) { // Fu:20130814 |
aoqi@1 | 108 | tty->print_cr("PredicateFailedStub::emit_code unimplemented yet!"); |
aoqi@1 | 109 | Unimplemented(); |
aoqi@1 | 110 | } |
aoqi@1 | 111 | |
aoqi@1 | 112 | void DivByZeroStub::emit_code(LIR_Assembler* ce) { |
aoqi@1 | 113 | if (_offset != -1) { |
aoqi@1 | 114 | // ce->compilation()->null_check_table()->append(_offset, __ offset()); |
aoqi@1 | 115 | ce->compilation()->implicit_exception_table()->append(_offset, __ offset()); |
aoqi@1 | 116 | } |
aoqi@1 | 117 | __ bind(_entry); |
aoqi@1 | 118 | __ call(Runtime1::entry_for(Runtime1::throw_div0_exception_id), relocInfo::runtime_call_type); |
aoqi@1 | 119 | __ delayed()->nop(); |
aoqi@1 | 120 | ce->add_call_info_here(_info); |
aoqi@1 | 121 | debug_only(__ should_not_reach_here()); |
aoqi@1 | 122 | |
aoqi@1 | 123 | } |
aoqi@1 | 124 | |
aoqi@1 | 125 | |
aoqi@1 | 126 | // Implementation of NewInstanceStub |
aoqi@1 | 127 | |
aoqi@1 | 128 | NewInstanceStub::NewInstanceStub(LIR_Opr klass_reg, LIR_Opr result, ciInstanceKlass* klass, CodeEmitInfo* info, Runtime1::StubID stub_id) { |
aoqi@1 | 129 | _result = result; |
aoqi@1 | 130 | _klass = klass; |
aoqi@1 | 131 | _klass_reg = klass_reg; |
aoqi@1 | 132 | _info = new CodeEmitInfo(info); |
aoqi@1 | 133 | assert(stub_id == Runtime1::new_instance_id || |
aoqi@1 | 134 | stub_id == Runtime1::fast_new_instance_id || |
aoqi@1 | 135 | stub_id == Runtime1::fast_new_instance_init_check_id, |
aoqi@1 | 136 | "need new_instance id"); |
aoqi@1 | 137 | _stub_id = stub_id; |
aoqi@1 | 138 | } |
aoqi@1 | 139 | |
aoqi@1 | 140 | // i use T4 as klass register, V0 as result register. MUST accord with Runtime1::generate_code_for. |
aoqi@1 | 141 | void NewInstanceStub::emit_code(LIR_Assembler* ce) { |
aoqi@1 | 142 | assert(__ sp_offset() == 0, "frame size should be fixed"); |
aoqi@1 | 143 | __ bind(_entry); |
aoqi@1 | 144 | //__ movptr(rdx, _klass_reg->as_register()); |
aoqi@1 | 145 | //__ call(RuntimeAddress(Runtime1::entry_for(_stub_id))); |
aoqi@1 | 146 | #ifndef _LP64 |
aoqi@1 | 147 | assert(_klass_reg->as_register() == T4, "klass_reg must in T4"); |
aoqi@1 | 148 | #else |
aoqi@1 | 149 | //FIXME. in A4? aoqi |
aoqi@1 | 150 | assert(_klass_reg->as_register() == A4, "klass_reg must in A4"); |
aoqi@1 | 151 | #endif |
aoqi@1 | 152 | |
aoqi@1 | 153 | |
aoqi@1 | 154 | __ call(Runtime1::entry_for(_stub_id), relocInfo::runtime_call_type); |
aoqi@1 | 155 | __ delayed()->nop(); |
aoqi@1 | 156 | ce->add_call_info_here(_info); |
aoqi@1 | 157 | ce->verify_oop_map(_info); |
aoqi@1 | 158 | assert(_result->as_register() == V0, "result must in V0,"); |
aoqi@1 | 159 | __ b_far(_continuation); |
aoqi@1 | 160 | __ delayed()->nop(); |
aoqi@1 | 161 | } |
aoqi@1 | 162 | |
aoqi@1 | 163 | |
aoqi@1 | 164 | // Implementation of NewTypeArrayStub |
aoqi@1 | 165 | |
aoqi@1 | 166 | NewTypeArrayStub::NewTypeArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) { |
aoqi@1 | 167 | _klass_reg = klass_reg; |
aoqi@1 | 168 | _length = length; |
aoqi@1 | 169 | _result = result; |
aoqi@1 | 170 | _info = new CodeEmitInfo(info); |
aoqi@1 | 171 | } |
aoqi@1 | 172 | |
aoqi@1 | 173 | // i use T2 as length register, T4 as klass register, V0 as result register. |
aoqi@1 | 174 | // MUST accord with Runtime1::generate_code_for |
aoqi@1 | 175 | void NewTypeArrayStub::emit_code(LIR_Assembler* ce) { |
aoqi@1 | 176 | assert(__ sp_offset() == 0, "frame size should be fixed"); |
aoqi@1 | 177 | __ bind(_entry); |
aoqi@1 | 178 | assert(_length->as_register() == T2, "length must in T2,"); |
aoqi@1 | 179 | #ifndef _LP64 |
aoqi@1 | 180 | assert(_klass_reg->as_register() == T4, "klass_reg must in T4"); |
aoqi@1 | 181 | #else |
aoqi@1 | 182 | //FIXME. in A4? aoqi |
aoqi@1 | 183 | assert(_klass_reg->as_register() == A4, "klass_reg must in A4"); |
aoqi@1 | 184 | #endif |
aoqi@1 | 185 | |
aoqi@1 | 186 | //__ call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_type_array_id))); |
aoqi@1 | 187 | __ call(Runtime1::entry_for(Runtime1::new_type_array_id), relocInfo::runtime_call_type); |
aoqi@1 | 188 | __ delayed()->nop(); |
aoqi@1 | 189 | ce->add_call_info_here(_info); |
aoqi@1 | 190 | ce->verify_oop_map(_info); |
aoqi@1 | 191 | |
aoqi@1 | 192 | assert(_result->as_register() == V0, "result must in V0,"); |
aoqi@1 | 193 | __ b_far(_continuation); |
aoqi@1 | 194 | __ delayed()->nop(); |
aoqi@1 | 195 | } |
aoqi@1 | 196 | |
aoqi@1 | 197 | |
aoqi@1 | 198 | // Implementation of NewObjectArrayStub |
aoqi@1 | 199 | |
aoqi@1 | 200 | NewObjectArrayStub::NewObjectArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) { |
aoqi@1 | 201 | _klass_reg = klass_reg; |
aoqi@1 | 202 | _result = result; |
aoqi@1 | 203 | _length = length; |
aoqi@1 | 204 | _info = new CodeEmitInfo(info); |
aoqi@1 | 205 | } |
aoqi@1 | 206 | |
aoqi@1 | 207 | |
aoqi@1 | 208 | void NewObjectArrayStub::emit_code(LIR_Assembler* ce) { |
aoqi@1 | 209 | assert(__ sp_offset() == 0, "frame size should be fixed"); |
aoqi@1 | 210 | __ bind(_entry); |
aoqi@1 | 211 | //assert(_length->as_register() == rbx, "length must in rbx,"); |
aoqi@1 | 212 | //assert(_klass_reg->as_register() == rdx, "klass_reg must in rdx"); |
aoqi@1 | 213 | //__ call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_object_array_id))); |
aoqi@1 | 214 | assert(_length->as_register() == T2, "length must in ebx"); |
aoqi@1 | 215 | #ifndef _LP64 |
aoqi@1 | 216 | assert(_klass_reg->as_register() == T4, "klass_reg must in T4"); |
aoqi@1 | 217 | #else |
aoqi@1 | 218 | //FIXME. in A4? aoqi |
aoqi@1 | 219 | assert(_klass_reg->as_register() == A4, "klass_reg must in A4"); |
aoqi@1 | 220 | #endif |
aoqi@1 | 221 | __ call(Runtime1::entry_for(Runtime1::new_object_array_id), relocInfo::runtime_call_type); |
aoqi@1 | 222 | __ delayed()->nop(); |
aoqi@1 | 223 | ce->add_call_info_here(_info); |
aoqi@1 | 224 | ce->verify_oop_map(_info); |
aoqi@1 | 225 | //assert(_result->as_register() == rax, "result must in rax,"); |
aoqi@1 | 226 | //__ jmp(_continuation); |
aoqi@1 | 227 | assert(_result->as_register() == V0, "result must in eax"); |
aoqi@1 | 228 | __ b_far(_continuation); |
aoqi@1 | 229 | __ delayed()->nop(); |
aoqi@1 | 230 | } |
aoqi@1 | 231 | |
aoqi@1 | 232 | |
aoqi@1 | 233 | // Implementation of MonitorAccessStubs |
aoqi@1 | 234 | |
aoqi@1 | 235 | MonitorEnterStub::MonitorEnterStub(LIR_Opr obj_reg, LIR_Opr lock_reg, CodeEmitInfo* info) |
aoqi@1 | 236 | : MonitorAccessStub(obj_reg, lock_reg) |
aoqi@1 | 237 | { |
aoqi@1 | 238 | _info = new CodeEmitInfo(info); |
aoqi@1 | 239 | } |
aoqi@1 | 240 | |
aoqi@1 | 241 | |
aoqi@1 | 242 | void MonitorEnterStub::emit_code(LIR_Assembler* ce) { |
aoqi@1 | 243 | assert(__ sp_offset() == 0, "frame size should be fixed"); |
aoqi@1 | 244 | __ bind(_entry); |
aoqi@1 | 245 | ce->store_parameter(_obj_reg->as_register(), 1); |
aoqi@1 | 246 | ce->store_parameter(_lock_reg->is_single_cpu()? _lock_reg->as_register() : _lock_reg->as_register_lo(), 0); |
aoqi@1 | 247 | /* |
aoqi@1 | 248 | Runtime1::StubID enter_id; |
aoqi@1 | 249 | if (ce->compilation()->has_fpu_code()) { |
aoqi@1 | 250 | enter_id = Runtime1::monitorenter_id; |
aoqi@1 | 251 | } else { |
aoqi@1 | 252 | enter_id = Runtime1::monitorenter_nofpu_id; |
aoqi@1 | 253 | } |
aoqi@1 | 254 | __ call(RuntimeAddress(Runtime1::entry_for(enter_id))); |
aoqi@1 | 255 | */ |
aoqi@1 | 256 | if (ce->compilation()->has_fpu_code()) { |
aoqi@1 | 257 | __ call(Runtime1::entry_for(Runtime1::monitorenter_id), relocInfo::runtime_call_type); |
aoqi@1 | 258 | } else { |
aoqi@1 | 259 | __ call(Runtime1::entry_for(Runtime1::monitorenter_nofpu_id), relocInfo::runtime_call_type); |
aoqi@1 | 260 | } |
aoqi@1 | 261 | __ delayed()->nop(); |
aoqi@1 | 262 | ce->add_call_info_here(_info); |
aoqi@1 | 263 | ce->verify_oop_map(_info); |
aoqi@1 | 264 | //__ jmp(_continuation); |
aoqi@1 | 265 | __ b_far(_continuation); |
aoqi@1 | 266 | __ delayed()->nop(); |
aoqi@1 | 267 | } |
aoqi@1 | 268 | |
aoqi@1 | 269 | |
aoqi@1 | 270 | void MonitorExitStub::emit_code(LIR_Assembler* ce) { |
aoqi@1 | 271 | __ bind(_entry); |
aoqi@1 | 272 | if (_compute_lock) { |
aoqi@1 | 273 | // lock_reg was destroyed by fast unlocking attempt => recompute it |
aoqi@1 | 274 | ce->monitor_address(_monitor_ix, _lock_reg); |
aoqi@1 | 275 | } |
aoqi@1 | 276 | ce->store_parameter(_lock_reg->as_register(), 0); |
aoqi@1 | 277 | // note: non-blocking leaf routine => no call info needed |
aoqi@1 | 278 | /* |
aoqi@1 | 279 | Runtime1::StubID exit_id; |
aoqi@1 | 280 | if (ce->compilation()->has_fpu_code()) { |
aoqi@1 | 281 | exit_id = Runtime1::monitorexit_id; |
aoqi@1 | 282 | } else { |
aoqi@1 | 283 | exit_id = Runtime1::monitorexit_nofpu_id; |
aoqi@1 | 284 | } |
aoqi@1 | 285 | __ call(RuntimeAddress(Runtime1::entry_for(exit_id))); |
aoqi@1 | 286 | __ jmp(_continuation); |
aoqi@1 | 287 | */ |
aoqi@1 | 288 | if (ce->compilation()->has_fpu_code()) { |
aoqi@1 | 289 | __ call(Runtime1::entry_for(Runtime1::monitorexit_id), relocInfo::runtime_call_type); |
aoqi@1 | 290 | } else { |
aoqi@1 | 291 | __ call(Runtime1::entry_for(Runtime1::monitorexit_nofpu_id), relocInfo::runtime_call_type); |
aoqi@1 | 292 | } |
aoqi@1 | 293 | __ delayed()->nop(); |
aoqi@1 | 294 | |
aoqi@1 | 295 | //__ jmp(_continuation); |
aoqi@1 | 296 | __ b_far(_continuation); |
aoqi@1 | 297 | __ delayed()->nop(); |
aoqi@1 | 298 | } |
aoqi@1 | 299 | |
aoqi@1 | 300 | |
aoqi@1 | 301 | // Implementation of patching: |
aoqi@1 | 302 | // - Copy the code at given offset to an inlined buffer (first the bytes, then the number of bytes) |
aoqi@1 | 303 | // - Replace original code with a call to the stub |
aoqi@1 | 304 | // At Runtime: |
aoqi@1 | 305 | // - call to stub, jump to runtime |
aoqi@1 | 306 | // - in runtime: preserve all registers (especially objects, i.e., source and destination object) |
aoqi@1 | 307 | // - in runtime: after initializing class, restore original code, reexecute instruction |
aoqi@1 | 308 | |
aoqi@1 | 309 | //int PatchingStub::_patch_info_offset = -NativeGeneralJump::instruction_size; |
aoqi@1 | 310 | int PatchingStub::_patch_info_offset = -NativeCall::instruction_size; |
aoqi@1 | 311 | |
aoqi@1 | 312 | void PatchingStub::align_patch_site(MacroAssembler* masm) { |
aoqi@1 | 313 | // We're patching a 5-7 byte instruction on intel and we need to |
aoqi@1 | 314 | // make sure that we don't see a piece of the instruction. It |
aoqi@1 | 315 | // appears mostly impossible on Intel to simply invalidate other |
aoqi@1 | 316 | // processors caches and since they may do aggressive prefetch it's |
aoqi@1 | 317 | // very hard to make a guess about what code might be in the icache. |
aoqi@1 | 318 | // Force the instruction to be double word aligned so that it |
aoqi@1 | 319 | // doesn't span a cache line. |
aoqi@1 | 320 | |
aoqi@1 | 321 | // the NativeJump is not finished, i am not sure what to do here. FIXME |
aoqi@1 | 322 | //masm->align(round_to(NativeGeneralJump::instruction_size, wordSize)); |
aoqi@1 | 323 | } |
aoqi@1 | 324 | |
aoqi@1 | 325 | void PatchingStub::emit_code(LIR_Assembler* ce) { |
aoqi@1 | 326 | assert(NativeCall::instruction_size <= _bytes_to_copy && _bytes_to_copy <= 0xFF, "not enough room for call"); |
aoqi@1 | 327 | assert(_bytes_to_copy <= 0xFF, "not enough room for call"); |
aoqi@1 | 328 | |
aoqi@1 | 329 | Label call_patch; |
aoqi@1 | 330 | |
aoqi@1 | 331 | // static field accesses have special semantics while the class |
aoqi@1 | 332 | // initializer is being run so we emit a test which can be used to |
aoqi@1 | 333 | // check that this code is being executed by the initializing |
aoqi@1 | 334 | // thread. |
aoqi@1 | 335 | address being_initialized_entry = __ pc(); |
aoqi@1 | 336 | if (CommentedAssembly) { |
aoqi@1 | 337 | __ block_comment(" patch template"); |
aoqi@1 | 338 | } |
aoqi@1 | 339 | if (_id == load_klass_id) { |
aoqi@1 | 340 | // produce a copy of the load klass instruction for use by the being initialized case |
aoqi@1 | 341 | address start = __ pc(); |
aoqi@1 | 342 | jobject o = NULL; |
aoqi@1 | 343 | int oop_index = __ oop_recorder()->allocate_oop_index(o); |
aoqi@1 | 344 | RelocationHolder rspec = oop_Relocation::spec(oop_index); |
aoqi@1 | 345 | __ relocate(rspec); |
aoqi@1 | 346 | #ifndef _LP64 |
aoqi@1 | 347 | //by_css |
aoqi@1 | 348 | __ lui(_obj, Assembler::split_high((int)o)); |
aoqi@1 | 349 | __ addiu(_obj, _obj, Assembler::split_low((int)o)); |
aoqi@1 | 350 | #else |
aoqi@1 | 351 | //This should be same as jobject2reg_with_patching. |
aoqi@1 | 352 | __ li48(_obj, (long)o); |
aoqi@1 | 353 | #endif |
aoqi@1 | 354 | while ((intx)__ pc() - (intx)start < NativeCall::instruction_size) { |
aoqi@1 | 355 | __ nop(); |
aoqi@1 | 356 | } |
aoqi@1 | 357 | #ifdef ASSERT |
aoqi@1 | 358 | for (int i = 0; i < _bytes_to_copy; i++) { |
aoqi@1 | 359 | address ptr = (address)(_pc_start + i); |
aoqi@1 | 360 | int a_byte = (*ptr) & 0xFF; |
aoqi@1 | 361 | assert(a_byte == *start++, "should be the same code"); |
aoqi@1 | 362 | } |
aoqi@1 | 363 | #endif |
aoqi@1 | 364 | } else { |
aoqi@1 | 365 | |
aoqi@1 | 366 | // make a copy the code which is going to be patched. |
aoqi@1 | 367 | assert((_bytes_to_copy&3)==0, "change this code"); |
aoqi@1 | 368 | address start = __ pc(); |
aoqi@1 | 369 | for ( int i = 0; i < _bytes_to_copy; i+=4) { |
aoqi@1 | 370 | __ emit_int32(*(int*)(_pc_start + i)); |
aoqi@1 | 371 | //make the site look like a nop, @jerome |
aoqi@1 | 372 | *(int*)(_pc_start + i)=0; |
aoqi@1 | 373 | } |
aoqi@1 | 374 | while ((intx)__ pc() - (intx)start < NativeCall::instruction_size) { |
aoqi@1 | 375 | __ nop(); |
aoqi@1 | 376 | } |
aoqi@1 | 377 | } |
aoqi@1 | 378 | |
aoqi@1 | 379 | address end_of_patch = __ pc(); |
aoqi@1 | 380 | int bytes_to_skip = 0; |
aoqi@1 | 381 | if (_id == load_klass_id) { |
aoqi@1 | 382 | int offset = __ offset(); |
aoqi@1 | 383 | if (CommentedAssembly) { |
aoqi@1 | 384 | __ block_comment(" being_initialized check"); |
aoqi@1 | 385 | } |
aoqi@1 | 386 | assert(_obj != NOREG, "must be a valid register"); |
aoqi@1 | 387 | #ifndef OPT_THREAD |
aoqi@1 | 388 | //FIXME, T8 need be saved ? |
aoqi@1 | 389 | Register thread = T8; |
aoqi@1 | 390 | __ get_thread(thread); |
aoqi@1 | 391 | #else |
aoqi@1 | 392 | Register thread = TREG; |
aoqi@1 | 393 | #endif |
aoqi@1 | 394 | __ ld(AT, _obj, in_bytes(InstanceKlass::init_thread_offset())); |
aoqi@1 | 395 | __ bne(thread, AT, call_patch); |
aoqi@1 | 396 | __ delayed()->nop(); |
aoqi@1 | 397 | |
aoqi@1 | 398 | // access_field patches may execute the patched code before it's |
aoqi@1 | 399 | // copied back into place so we need to jump back into the main |
aoqi@1 | 400 | // code of the nmethod to continue execution. |
aoqi@1 | 401 | /* address temppc = __ pc(); |
aoqi@1 | 402 | __ b(_patch_site_continuation); |
aoqi@1 | 403 | __ delayed()->nop(); |
aoqi@1 | 404 | bytes_to_skip += (__ pc() - temppc); |
aoqi@1 | 405 | */ |
aoqi@1 | 406 | __ b_far(_patch_site_continuation); |
aoqi@1 | 407 | __ delayed()->nop(); |
aoqi@1 | 408 | bytes_to_skip += __ offset() - offset; |
aoqi@1 | 409 | |
aoqi@1 | 410 | } |
aoqi@1 | 411 | |
aoqi@1 | 412 | if (CommentedAssembly) { |
aoqi@1 | 413 | __ block_comment("patch data"); |
aoqi@1 | 414 | } |
aoqi@1 | 415 | // Now emit the patch record telling the runtime how to find the |
aoqi@1 | 416 | // pieces of the patch. We only need 3 bytes but for alignment, we |
aoqi@1 | 417 | // need 4 bytes |
aoqi@1 | 418 | int sizeof_patch_record = 4; |
aoqi@1 | 419 | bytes_to_skip += sizeof_patch_record; |
aoqi@1 | 420 | |
aoqi@1 | 421 | // emit the offsets needed to find the code to patch |
aoqi@1 | 422 | int being_initialized_entry_offset = __ pc() - being_initialized_entry + patch_info_size; |
aoqi@1 | 423 | |
aoqi@1 | 424 | #ifdef _LP64 |
aoqi@1 | 425 | /* Jin: In MIPS64, byte_skip is much larger than that in X86. It can not be contained in a byte: |
aoqi@1 | 426 | * - bytes_to_skip = 0x190; |
aoqi@1 | 427 | * - _bytes_to_copy = 0x20; |
aoqi@1 | 428 | * - being_initialized_entry_offset = 0x1b0; |
aoqi@1 | 429 | * |
aoqi@1 | 430 | * To minimize the modification of share codes, the values are decreased 4 times when generated, |
aoqi@1 | 431 | * thus can be packed into a long type. |
aoqi@1 | 432 | * |
aoqi@1 | 433 | * See [share/vm/c1/c1_Runtime1.cpp 918] Runtime1::patch_code() |
aoqi@1 | 434 | */ |
aoqi@1 | 435 | being_initialized_entry_offset /= 4; |
aoqi@1 | 436 | _bytes_to_copy /= 4; |
aoqi@1 | 437 | bytes_to_skip /= 4; |
aoqi@1 | 438 | #endif |
aoqi@1 | 439 | // patch_info_pc offset | size of b instruction(8)| patched code size |
aoqi@1 | 440 | assert((char)being_initialized_entry_offset==being_initialized_entry_offset, "just check"); |
aoqi@1 | 441 | assert((char)bytes_to_skip==bytes_to_skip, "just check"); |
aoqi@1 | 442 | assert((char)_bytes_to_copy==_bytes_to_copy, "just check"); |
aoqi@1 | 443 | __ emit_int32(being_initialized_entry_offset<<8 | (bytes_to_skip<<16) | (_bytes_to_copy<<24) ); |
aoqi@1 | 444 | |
aoqi@1 | 445 | address patch_info_pc = __ pc(); |
aoqi@1 | 446 | #ifdef _LP64 |
aoqi@1 | 447 | assert(patch_info_pc - end_of_patch == bytes_to_skip * 4, "incorrect patch info"); |
aoqi@1 | 448 | #else |
aoqi@1 | 449 | assert(patch_info_pc - end_of_patch == bytes_to_skip, "incorrect patch info"); |
aoqi@1 | 450 | #endif |
aoqi@1 | 451 | |
aoqi@1 | 452 | address entry = __ pc(); |
aoqi@1 | 453 | NativeGeneralJump::insert_unconditional((address)_pc_start, entry); |
aoqi@1 | 454 | address target = NULL; |
aoqi@1 | 455 | switch (_id) { |
aoqi@1 | 456 | case access_field_id: target = Runtime1::entry_for(Runtime1::access_field_patching_id); break; |
aoqi@1 | 457 | case load_klass_id: target = Runtime1::entry_for(Runtime1::load_klass_patching_id); break; |
aoqi@1 | 458 | default: ShouldNotReachHere(); |
aoqi@1 | 459 | } |
aoqi@1 | 460 | __ bind(call_patch); |
aoqi@1 | 461 | |
aoqi@1 | 462 | |
aoqi@1 | 463 | if (CommentedAssembly) { |
aoqi@1 | 464 | __ block_comment("patch entry point"); |
aoqi@1 | 465 | } |
aoqi@1 | 466 | //__ call(RuntimeAddress(target)); |
aoqi@1 | 467 | #ifndef _LP64 |
aoqi@1 | 468 | //by_css |
aoqi@1 | 469 | __ lui(T9, Assembler::split_high((int)target)); |
aoqi@1 | 470 | __ addiu(T9, T9, Assembler::split_low((int)target)); |
aoqi@1 | 471 | #else |
aoqi@1 | 472 | __ li48(T9, (long)target); |
aoqi@1 | 473 | #endif |
aoqi@1 | 474 | __ jalr(T9); |
aoqi@1 | 475 | __ delayed()->nop(); |
aoqi@1 | 476 | assert(_patch_info_offset == (patch_info_pc - __ pc()), "must not change"); |
aoqi@1 | 477 | ce->add_call_info_here(_info); |
aoqi@1 | 478 | int jmp_off = __ offset(); |
aoqi@1 | 479 | __ b_far(_patch_site_entry); |
aoqi@1 | 480 | __ delayed()->nop(); |
aoqi@1 | 481 | // Add enough nops so deoptimization can overwrite the jmp above with a call |
aoqi@1 | 482 | // and not destroy the world. |
aoqi@1 | 483 | for (int j = __ offset(); j < jmp_off + NativeCall::instruction_size; j += 4 ) { |
aoqi@1 | 484 | __ nop(); |
aoqi@1 | 485 | } |
aoqi@1 | 486 | if (_id == load_klass_id) { |
aoqi@1 | 487 | CodeSection* cs = __ code_section(); |
aoqi@1 | 488 | address pc = (address)_pc_start; |
aoqi@1 | 489 | RelocIterator iter(cs, pc, pc + 1); |
aoqi@1 | 490 | relocInfo::change_reloc_info_for_address(&iter, pc, relocInfo::oop_type, relocInfo::none); |
aoqi@1 | 491 | } |
aoqi@1 | 492 | } |
aoqi@1 | 493 | |
aoqi@1 | 494 | |
aoqi@1 | 495 | void ImplicitNullCheckStub::emit_code(LIR_Assembler* ce) { |
aoqi@1 | 496 | ce->compilation()->implicit_exception_table()->append(_offset, __ offset()); |
aoqi@1 | 497 | __ bind(_entry); |
aoqi@1 | 498 | __ call(Runtime1::entry_for(Runtime1::throw_null_pointer_exception_id), relocInfo::runtime_call_type); |
aoqi@1 | 499 | __ delayed()->nop(); |
aoqi@1 | 500 | ce->add_call_info_here(_info); |
aoqi@1 | 501 | debug_only(__ should_not_reach_here()); |
aoqi@1 | 502 | } |
aoqi@1 | 503 | |
aoqi@1 | 504 | |
aoqi@1 | 505 | // i dont know which register to use here, i just assume A1 here. FIXME |
aoqi@1 | 506 | void SimpleExceptionStub::emit_code(LIR_Assembler* ce) { |
aoqi@1 | 507 | assert(__ sp_offset() == 0, "frame size should be fixed"); |
aoqi@1 | 508 | |
aoqi@1 | 509 | __ bind(_entry); |
aoqi@1 | 510 | // pass the object on stack because all registers must be preserved |
aoqi@1 | 511 | if (_obj->is_cpu_register()) { |
aoqi@1 | 512 | ce->store_parameter(_obj->as_register(), 0); |
aoqi@1 | 513 | } |
aoqi@1 | 514 | __ call(Runtime1::entry_for(_stub), relocInfo::runtime_call_type); |
aoqi@1 | 515 | __ delayed()->nop(); |
aoqi@1 | 516 | ce->add_call_info_here(_info); |
aoqi@1 | 517 | debug_only(__ should_not_reach_here()); |
aoqi@1 | 518 | } |
aoqi@1 | 519 | |
aoqi@1 | 520 | /* |
aoqi@1 | 521 | ArrayStoreExceptionStub::ArrayStoreExceptionStub(CodeEmitInfo* info): |
aoqi@1 | 522 | _info(info) { |
aoqi@1 | 523 | } |
aoqi@1 | 524 | |
aoqi@1 | 525 | |
aoqi@1 | 526 | void ArrayStoreExceptionStub::emit_code(LIR_Assembler* ce) { |
aoqi@1 | 527 | assert(__ sp_offset() == 0, "frame size should be fixed"); |
aoqi@1 | 528 | __ bind(_entry); |
aoqi@1 | 529 | //__ call(RuntimeAddress(Runtime1::entry_for(Runtime1::throw_array_store_exception_id))); |
aoqi@1 | 530 | __ call(Runtime1::entry_for(Runtime1::throw_array_store_exception_id), relocInfo::runtime_call_type); |
aoqi@1 | 531 | __ delayed()->nop(); |
aoqi@1 | 532 | ce->add_call_info_here(_info); |
aoqi@1 | 533 | debug_only(__ should_not_reach_here()); |
aoqi@1 | 534 | } |
aoqi@1 | 535 | |
aoqi@1 | 536 | */ |
aoqi@1 | 537 | void ArrayCopyStub::emit_code(LIR_Assembler* ce) { |
aoqi@1 | 538 | //---------------slow case: call to native----------------- |
aoqi@1 | 539 | __ bind(_entry); |
aoqi@1 | 540 | // Figure out where the args should go |
aoqi@1 | 541 | // This should really convert the IntrinsicID to the methodOop and signature |
aoqi@1 | 542 | // but I don't know how to do that. |
aoqi@1 | 543 | // |
aoqi@1 | 544 | VMRegPair args[5]; |
aoqi@1 | 545 | BasicType signature[5] = { T_OBJECT, T_INT, T_OBJECT, T_INT, T_INT}; |
aoqi@1 | 546 | SharedRuntime::java_calling_convention(signature, args, 5, true); |
aoqi@1 | 547 | |
aoqi@1 | 548 | // push parameters |
aoqi@1 | 549 | // (src, src_pos, dest, destPos, length) |
aoqi@1 | 550 | Register r[5]; |
aoqi@1 | 551 | r[0] = src()->as_register(); |
aoqi@1 | 552 | r[1] = src_pos()->as_register(); |
aoqi@1 | 553 | r[2] = dst()->as_register(); |
aoqi@1 | 554 | r[3] = dst_pos()->as_register(); |
aoqi@1 | 555 | r[4] = length()->as_register(); |
aoqi@1 | 556 | |
aoqi@1 | 557 | // next registers will get stored on the stack |
aoqi@1 | 558 | for (int i = 0; i < 5 ; i++ ) { |
aoqi@1 | 559 | VMReg r_1 = args[i].first(); |
aoqi@1 | 560 | if (r_1->is_stack()) { |
aoqi@1 | 561 | int st_off = r_1->reg2stack() * wordSize; |
aoqi@1 | 562 | //__ movptr (Address(rsp, st_off), r[i]); |
aoqi@1 | 563 | __ sw( r[i], SP, st_off); |
aoqi@1 | 564 | } else { |
aoqi@1 | 565 | assert(r[i] == args[i].first()->as_Register(), "Wrong register for arg "); |
aoqi@1 | 566 | } |
aoqi@1 | 567 | } |
aoqi@1 | 568 | |
aoqi@1 | 569 | ce->align_call(lir_static_call); |
aoqi@1 | 570 | |
aoqi@1 | 571 | ce->emit_static_call_stub(); |
aoqi@1 | 572 | //AddressLiteral resolve(SharedRuntime::get_resolve_static_call_stub(), |
aoqi@1 | 573 | // relocInfo::static_call_type); |
aoqi@1 | 574 | //__ call(resolve); |
aoqi@1 | 575 | __ call(SharedRuntime::get_resolve_static_call_stub(), relocInfo::static_call_type); |
aoqi@1 | 576 | __ delayed()->nop(); |
aoqi@1 | 577 | ce->add_call_info_here(info()); |
aoqi@1 | 578 | |
aoqi@1 | 579 | #ifndef PRODUCT |
aoqi@1 | 580 | //__ incrementl(ExternalAddress((address)&Runtime1::_arraycopy_slowcase_cnt)); |
aoqi@1 | 581 | #ifndef _LP64 |
aoqi@1 | 582 | __ lui(T8, Assembler::split_high((int)&Runtime1::_arraycopy_slowcase_cnt)); |
aoqi@1 | 583 | __ lw(AT, T8, Assembler::split_low((int)&Runtime1::_arraycopy_slowcase_cnt)); |
aoqi@1 | 584 | __ addiu(AT, AT, 1); |
aoqi@1 | 585 | __ sw(AT, T8, Assembler::split_low((int)&Runtime1::_arraycopy_slowcase_cnt)); |
aoqi@1 | 586 | #else |
aoqi@1 | 587 | __ li(T8, (long)&Runtime1::_arraycopy_slowcase_cnt); |
aoqi@1 | 588 | __ lw(AT, T8, 0); |
aoqi@1 | 589 | __ daddiu(AT, AT, 1); |
aoqi@1 | 590 | __ sw(AT, T8, 0); |
aoqi@1 | 591 | #endif |
aoqi@1 | 592 | #endif |
aoqi@1 | 593 | |
aoqi@1 | 594 | __ b_far(_continuation); |
aoqi@1 | 595 | __ delayed()->nop(); |
aoqi@1 | 596 | } |
aoqi@1 | 597 | |
aoqi@1 | 598 | ///////////////////////////////////////////////////////////////////////////// |
aoqi@1 | 599 | #ifndef SERIALGC |
aoqi@1 | 600 | |
aoqi@1 | 601 | void G1PreBarrierStub::emit_code(LIR_Assembler* ce) { |
aoqi@1 | 602 | Unimplemented(); |
aoqi@1 | 603 | } |
aoqi@1 | 604 | /* |
aoqi@1 | 605 | jbyte* G1PostBarrierStub::_byte_map_base = NULL; |
aoqi@1 | 606 | |
aoqi@1 | 607 | jbyte* G1PostBarrierStub::byte_map_base_slow() { |
aoqi@1 | 608 | BarrierSet* bs = Universe::heap()->barrier_set(); |
aoqi@1 | 609 | assert(bs->is_a(BarrierSet::G1SATBCTLogging), |
aoqi@1 | 610 | "Must be if we're using this."); |
aoqi@1 | 611 | return ((G1SATBCardTableModRefBS*)bs)->byte_map_base; |
aoqi@1 | 612 | } |
aoqi@1 | 613 | */ |
aoqi@1 | 614 | void G1PostBarrierStub::emit_code(LIR_Assembler* ce) { |
aoqi@1 | 615 | Unimplemented(); |
aoqi@1 | 616 | } |
aoqi@1 | 617 | |
aoqi@1 | 618 | #endif // SERIALGC |
aoqi@1 | 619 | ///////////////////////////////////////////////////////////////////////////// |
aoqi@1 | 620 | |
aoqi@1 | 621 | #undef __ |