Tue, 02 Sep 2014 12:48:45 -0700
8055494: Add C2 x86 intrinsic for BigInteger::multiplyToLen() method
Summary: Add new C2 intrinsic for BigInteger::multiplyToLen() on x86 in 64-bit VM.
Reviewed-by: roland
duke@435 | 1 | /* |
mikael@6198 | 2 | * Copyright (c) 1999, 2013, Oracle and/or its affiliates. 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 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
stefank@2314 | 25 | #include "precompiled.hpp" |
stefank@2314 | 26 | #include "c1/c1_CodeStubs.hpp" |
stefank@2314 | 27 | #include "c1/c1_FrameMap.hpp" |
stefank@2314 | 28 | #include "c1/c1_LIRAssembler.hpp" |
stefank@2314 | 29 | #include "c1/c1_MacroAssembler.hpp" |
stefank@2314 | 30 | #include "c1/c1_Runtime1.hpp" |
stefank@2314 | 31 | #include "nativeInst_x86.hpp" |
stefank@2314 | 32 | #include "runtime/sharedRuntime.hpp" |
jprovino@4542 | 33 | #include "utilities/macros.hpp" |
stefank@2314 | 34 | #include "vmreg_x86.inline.hpp" |
jprovino@4542 | 35 | #if INCLUDE_ALL_GCS |
stefank@2314 | 36 | #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp" |
jprovino@4542 | 37 | #endif // INCLUDE_ALL_GCS |
duke@435 | 38 | |
duke@435 | 39 | |
duke@435 | 40 | #define __ ce->masm()-> |
duke@435 | 41 | |
duke@435 | 42 | float ConversionStub::float_zero = 0.0; |
duke@435 | 43 | double ConversionStub::double_zero = 0.0; |
duke@435 | 44 | |
duke@435 | 45 | void ConversionStub::emit_code(LIR_Assembler* ce) { |
duke@435 | 46 | __ bind(_entry); |
duke@435 | 47 | assert(bytecode() == Bytecodes::_f2i || bytecode() == Bytecodes::_d2i, "other conversions do not require stub"); |
duke@435 | 48 | |
duke@435 | 49 | |
duke@435 | 50 | if (input()->is_single_xmm()) { |
duke@435 | 51 | __ comiss(input()->as_xmm_float_reg(), |
duke@435 | 52 | ExternalAddress((address)&float_zero)); |
duke@435 | 53 | } else if (input()->is_double_xmm()) { |
duke@435 | 54 | __ comisd(input()->as_xmm_double_reg(), |
duke@435 | 55 | ExternalAddress((address)&double_zero)); |
duke@435 | 56 | } else { |
never@739 | 57 | LP64_ONLY(ShouldNotReachHere()); |
never@739 | 58 | __ push(rax); |
duke@435 | 59 | __ ftst(); |
duke@435 | 60 | __ fnstsw_ax(); |
duke@435 | 61 | __ sahf(); |
never@739 | 62 | __ pop(rax); |
duke@435 | 63 | } |
duke@435 | 64 | |
duke@435 | 65 | Label NaN, do_return; |
duke@435 | 66 | __ jccb(Assembler::parity, NaN); |
duke@435 | 67 | __ jccb(Assembler::below, do_return); |
duke@435 | 68 | |
duke@435 | 69 | // input is > 0 -> return maxInt |
duke@435 | 70 | // result register already contains 0x80000000, so subtracting 1 gives 0x7fffffff |
duke@435 | 71 | __ decrement(result()->as_register()); |
duke@435 | 72 | __ jmpb(do_return); |
duke@435 | 73 | |
duke@435 | 74 | // input is NaN -> return 0 |
duke@435 | 75 | __ bind(NaN); |
never@739 | 76 | __ xorptr(result()->as_register(), result()->as_register()); |
duke@435 | 77 | |
duke@435 | 78 | __ bind(do_return); |
duke@435 | 79 | __ jmp(_continuation); |
duke@435 | 80 | } |
duke@435 | 81 | |
duke@435 | 82 | void CounterOverflowStub::emit_code(LIR_Assembler* ce) { |
duke@435 | 83 | __ bind(_entry); |
iveresov@2138 | 84 | ce->store_parameter(_method->as_register(), 1); |
duke@435 | 85 | ce->store_parameter(_bci, 0); |
duke@435 | 86 | __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::counter_overflow_id))); |
duke@435 | 87 | ce->add_call_info_here(_info); |
duke@435 | 88 | ce->verify_oop_map(_info); |
duke@435 | 89 | __ jmp(_continuation); |
duke@435 | 90 | } |
duke@435 | 91 | |
duke@435 | 92 | RangeCheckStub::RangeCheckStub(CodeEmitInfo* info, LIR_Opr index, |
duke@435 | 93 | bool throw_index_out_of_bounds_exception) |
duke@435 | 94 | : _throw_index_out_of_bounds_exception(throw_index_out_of_bounds_exception) |
duke@435 | 95 | , _index(index) |
duke@435 | 96 | { |
roland@2174 | 97 | assert(info != NULL, "must have info"); |
roland@2174 | 98 | _info = new CodeEmitInfo(info); |
duke@435 | 99 | } |
duke@435 | 100 | |
duke@435 | 101 | |
duke@435 | 102 | void RangeCheckStub::emit_code(LIR_Assembler* ce) { |
duke@435 | 103 | __ bind(_entry); |
roland@4860 | 104 | if (_info->deoptimize_on_exception()) { |
roland@4860 | 105 | address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id); |
roland@4860 | 106 | __ call(RuntimeAddress(a)); |
roland@4860 | 107 | ce->add_call_info_here(_info); |
roland@4860 | 108 | ce->verify_oop_map(_info); |
roland@4860 | 109 | debug_only(__ should_not_reach_here()); |
roland@4860 | 110 | return; |
roland@4860 | 111 | } |
roland@4860 | 112 | |
duke@435 | 113 | // pass the array index on stack because all registers must be preserved |
duke@435 | 114 | if (_index->is_cpu_register()) { |
duke@435 | 115 | ce->store_parameter(_index->as_register(), 0); |
duke@435 | 116 | } else { |
duke@435 | 117 | ce->store_parameter(_index->as_jint(), 0); |
duke@435 | 118 | } |
duke@435 | 119 | Runtime1::StubID stub_id; |
duke@435 | 120 | if (_throw_index_out_of_bounds_exception) { |
duke@435 | 121 | stub_id = Runtime1::throw_index_exception_id; |
duke@435 | 122 | } else { |
duke@435 | 123 | stub_id = Runtime1::throw_range_check_failed_id; |
duke@435 | 124 | } |
duke@435 | 125 | __ call(RuntimeAddress(Runtime1::entry_for(stub_id))); |
duke@435 | 126 | ce->add_call_info_here(_info); |
roland@4860 | 127 | ce->verify_oop_map(_info); |
duke@435 | 128 | debug_only(__ should_not_reach_here()); |
duke@435 | 129 | } |
duke@435 | 130 | |
roland@4860 | 131 | PredicateFailedStub::PredicateFailedStub(CodeEmitInfo* info) { |
roland@4860 | 132 | _info = new CodeEmitInfo(info); |
roland@4860 | 133 | } |
roland@4860 | 134 | |
roland@4860 | 135 | void PredicateFailedStub::emit_code(LIR_Assembler* ce) { |
roland@4860 | 136 | __ bind(_entry); |
roland@4860 | 137 | address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id); |
roland@4860 | 138 | __ call(RuntimeAddress(a)); |
roland@4860 | 139 | ce->add_call_info_here(_info); |
roland@4860 | 140 | ce->verify_oop_map(_info); |
roland@4860 | 141 | debug_only(__ should_not_reach_here()); |
roland@4860 | 142 | } |
duke@435 | 143 | |
duke@435 | 144 | void DivByZeroStub::emit_code(LIR_Assembler* ce) { |
duke@435 | 145 | if (_offset != -1) { |
duke@435 | 146 | ce->compilation()->implicit_exception_table()->append(_offset, __ offset()); |
duke@435 | 147 | } |
duke@435 | 148 | __ bind(_entry); |
duke@435 | 149 | __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::throw_div0_exception_id))); |
duke@435 | 150 | ce->add_call_info_here(_info); |
duke@435 | 151 | debug_only(__ should_not_reach_here()); |
duke@435 | 152 | } |
duke@435 | 153 | |
duke@435 | 154 | |
duke@435 | 155 | // Implementation of NewInstanceStub |
duke@435 | 156 | |
duke@435 | 157 | NewInstanceStub::NewInstanceStub(LIR_Opr klass_reg, LIR_Opr result, ciInstanceKlass* klass, CodeEmitInfo* info, Runtime1::StubID stub_id) { |
duke@435 | 158 | _result = result; |
duke@435 | 159 | _klass = klass; |
duke@435 | 160 | _klass_reg = klass_reg; |
duke@435 | 161 | _info = new CodeEmitInfo(info); |
duke@435 | 162 | assert(stub_id == Runtime1::new_instance_id || |
duke@435 | 163 | stub_id == Runtime1::fast_new_instance_id || |
duke@435 | 164 | stub_id == Runtime1::fast_new_instance_init_check_id, |
duke@435 | 165 | "need new_instance id"); |
duke@435 | 166 | _stub_id = stub_id; |
duke@435 | 167 | } |
duke@435 | 168 | |
duke@435 | 169 | |
duke@435 | 170 | void NewInstanceStub::emit_code(LIR_Assembler* ce) { |
duke@435 | 171 | assert(__ rsp_offset() == 0, "frame size should be fixed"); |
duke@435 | 172 | __ bind(_entry); |
never@739 | 173 | __ movptr(rdx, _klass_reg->as_register()); |
duke@435 | 174 | __ call(RuntimeAddress(Runtime1::entry_for(_stub_id))); |
duke@435 | 175 | ce->add_call_info_here(_info); |
duke@435 | 176 | ce->verify_oop_map(_info); |
duke@435 | 177 | assert(_result->as_register() == rax, "result must in rax,"); |
duke@435 | 178 | __ jmp(_continuation); |
duke@435 | 179 | } |
duke@435 | 180 | |
duke@435 | 181 | |
duke@435 | 182 | // Implementation of NewTypeArrayStub |
duke@435 | 183 | |
duke@435 | 184 | NewTypeArrayStub::NewTypeArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) { |
duke@435 | 185 | _klass_reg = klass_reg; |
duke@435 | 186 | _length = length; |
duke@435 | 187 | _result = result; |
duke@435 | 188 | _info = new CodeEmitInfo(info); |
duke@435 | 189 | } |
duke@435 | 190 | |
duke@435 | 191 | |
duke@435 | 192 | void NewTypeArrayStub::emit_code(LIR_Assembler* ce) { |
duke@435 | 193 | assert(__ rsp_offset() == 0, "frame size should be fixed"); |
duke@435 | 194 | __ bind(_entry); |
duke@435 | 195 | assert(_length->as_register() == rbx, "length must in rbx,"); |
duke@435 | 196 | assert(_klass_reg->as_register() == rdx, "klass_reg must in rdx"); |
duke@435 | 197 | __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_type_array_id))); |
duke@435 | 198 | ce->add_call_info_here(_info); |
duke@435 | 199 | ce->verify_oop_map(_info); |
duke@435 | 200 | assert(_result->as_register() == rax, "result must in rax,"); |
duke@435 | 201 | __ jmp(_continuation); |
duke@435 | 202 | } |
duke@435 | 203 | |
duke@435 | 204 | |
duke@435 | 205 | // Implementation of NewObjectArrayStub |
duke@435 | 206 | |
duke@435 | 207 | NewObjectArrayStub::NewObjectArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) { |
duke@435 | 208 | _klass_reg = klass_reg; |
duke@435 | 209 | _result = result; |
duke@435 | 210 | _length = length; |
duke@435 | 211 | _info = new CodeEmitInfo(info); |
duke@435 | 212 | } |
duke@435 | 213 | |
duke@435 | 214 | |
duke@435 | 215 | void NewObjectArrayStub::emit_code(LIR_Assembler* ce) { |
duke@435 | 216 | assert(__ rsp_offset() == 0, "frame size should be fixed"); |
duke@435 | 217 | __ bind(_entry); |
duke@435 | 218 | assert(_length->as_register() == rbx, "length must in rbx,"); |
duke@435 | 219 | assert(_klass_reg->as_register() == rdx, "klass_reg must in rdx"); |
duke@435 | 220 | __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_object_array_id))); |
duke@435 | 221 | ce->add_call_info_here(_info); |
duke@435 | 222 | ce->verify_oop_map(_info); |
duke@435 | 223 | assert(_result->as_register() == rax, "result must in rax,"); |
duke@435 | 224 | __ jmp(_continuation); |
duke@435 | 225 | } |
duke@435 | 226 | |
duke@435 | 227 | |
duke@435 | 228 | // Implementation of MonitorAccessStubs |
duke@435 | 229 | |
duke@435 | 230 | MonitorEnterStub::MonitorEnterStub(LIR_Opr obj_reg, LIR_Opr lock_reg, CodeEmitInfo* info) |
duke@435 | 231 | : MonitorAccessStub(obj_reg, lock_reg) |
duke@435 | 232 | { |
duke@435 | 233 | _info = new CodeEmitInfo(info); |
duke@435 | 234 | } |
duke@435 | 235 | |
duke@435 | 236 | |
duke@435 | 237 | void MonitorEnterStub::emit_code(LIR_Assembler* ce) { |
duke@435 | 238 | assert(__ rsp_offset() == 0, "frame size should be fixed"); |
duke@435 | 239 | __ bind(_entry); |
duke@435 | 240 | ce->store_parameter(_obj_reg->as_register(), 1); |
duke@435 | 241 | ce->store_parameter(_lock_reg->as_register(), 0); |
duke@435 | 242 | Runtime1::StubID enter_id; |
duke@435 | 243 | if (ce->compilation()->has_fpu_code()) { |
duke@435 | 244 | enter_id = Runtime1::monitorenter_id; |
duke@435 | 245 | } else { |
duke@435 | 246 | enter_id = Runtime1::monitorenter_nofpu_id; |
duke@435 | 247 | } |
duke@435 | 248 | __ call(RuntimeAddress(Runtime1::entry_for(enter_id))); |
duke@435 | 249 | ce->add_call_info_here(_info); |
duke@435 | 250 | ce->verify_oop_map(_info); |
duke@435 | 251 | __ jmp(_continuation); |
duke@435 | 252 | } |
duke@435 | 253 | |
duke@435 | 254 | |
duke@435 | 255 | void MonitorExitStub::emit_code(LIR_Assembler* ce) { |
duke@435 | 256 | __ bind(_entry); |
duke@435 | 257 | if (_compute_lock) { |
duke@435 | 258 | // lock_reg was destroyed by fast unlocking attempt => recompute it |
duke@435 | 259 | ce->monitor_address(_monitor_ix, _lock_reg); |
duke@435 | 260 | } |
duke@435 | 261 | ce->store_parameter(_lock_reg->as_register(), 0); |
duke@435 | 262 | // note: non-blocking leaf routine => no call info needed |
duke@435 | 263 | Runtime1::StubID exit_id; |
duke@435 | 264 | if (ce->compilation()->has_fpu_code()) { |
duke@435 | 265 | exit_id = Runtime1::monitorexit_id; |
duke@435 | 266 | } else { |
duke@435 | 267 | exit_id = Runtime1::monitorexit_nofpu_id; |
duke@435 | 268 | } |
duke@435 | 269 | __ call(RuntimeAddress(Runtime1::entry_for(exit_id))); |
duke@435 | 270 | __ jmp(_continuation); |
duke@435 | 271 | } |
duke@435 | 272 | |
duke@435 | 273 | |
duke@435 | 274 | // Implementation of patching: |
duke@435 | 275 | // - Copy the code at given offset to an inlined buffer (first the bytes, then the number of bytes) |
duke@435 | 276 | // - Replace original code with a call to the stub |
duke@435 | 277 | // At Runtime: |
duke@435 | 278 | // - call to stub, jump to runtime |
duke@435 | 279 | // - in runtime: preserve all registers (rspecially objects, i.e., source and destination object) |
duke@435 | 280 | // - in runtime: after initializing class, restore original code, reexecute instruction |
duke@435 | 281 | |
duke@435 | 282 | int PatchingStub::_patch_info_offset = -NativeGeneralJump::instruction_size; |
duke@435 | 283 | |
duke@435 | 284 | void PatchingStub::align_patch_site(MacroAssembler* masm) { |
duke@435 | 285 | // We're patching a 5-7 byte instruction on intel and we need to |
duke@435 | 286 | // make sure that we don't see a piece of the instruction. It |
duke@435 | 287 | // appears mostly impossible on Intel to simply invalidate other |
duke@435 | 288 | // processors caches and since they may do aggressive prefetch it's |
duke@435 | 289 | // very hard to make a guess about what code might be in the icache. |
duke@435 | 290 | // Force the instruction to be double word aligned so that it |
duke@435 | 291 | // doesn't span a cache line. |
duke@435 | 292 | masm->align(round_to(NativeGeneralJump::instruction_size, wordSize)); |
duke@435 | 293 | } |
duke@435 | 294 | |
duke@435 | 295 | void PatchingStub::emit_code(LIR_Assembler* ce) { |
duke@435 | 296 | assert(NativeCall::instruction_size <= _bytes_to_copy && _bytes_to_copy <= 0xFF, "not enough room for call"); |
duke@435 | 297 | |
duke@435 | 298 | Label call_patch; |
duke@435 | 299 | |
duke@435 | 300 | // static field accesses have special semantics while the class |
duke@435 | 301 | // initializer is being run so we emit a test which can be used to |
duke@435 | 302 | // check that this code is being executed by the initializing |
duke@435 | 303 | // thread. |
duke@435 | 304 | address being_initialized_entry = __ pc(); |
duke@435 | 305 | if (CommentedAssembly) { |
duke@435 | 306 | __ block_comment(" patch template"); |
duke@435 | 307 | } |
duke@435 | 308 | if (_id == load_klass_id) { |
duke@435 | 309 | // produce a copy of the load klass instruction for use by the being initialized case |
coleenp@4037 | 310 | #ifdef ASSERT |
duke@435 | 311 | address start = __ pc(); |
coleenp@4037 | 312 | #endif |
coleenp@4037 | 313 | Metadata* o = NULL; |
coleenp@4037 | 314 | __ mov_metadata(_obj, o); |
coleenp@4037 | 315 | #ifdef ASSERT |
coleenp@4037 | 316 | for (int i = 0; i < _bytes_to_copy; i++) { |
coleenp@4037 | 317 | address ptr = (address)(_pc_start + i); |
coleenp@4037 | 318 | int a_byte = (*ptr) & 0xFF; |
coleenp@4037 | 319 | assert(a_byte == *start++, "should be the same code"); |
coleenp@4037 | 320 | } |
coleenp@4037 | 321 | #endif |
coleenp@4037 | 322 | } else if (_id == load_mirror_id) { |
coleenp@4037 | 323 | // produce a copy of the load mirror instruction for use by the being |
coleenp@4037 | 324 | // initialized case |
coleenp@4037 | 325 | #ifdef ASSERT |
coleenp@4037 | 326 | address start = __ pc(); |
coleenp@4037 | 327 | #endif |
duke@435 | 328 | jobject o = NULL; |
duke@435 | 329 | __ movoop(_obj, o); |
duke@435 | 330 | #ifdef ASSERT |
duke@435 | 331 | for (int i = 0; i < _bytes_to_copy; i++) { |
duke@435 | 332 | address ptr = (address)(_pc_start + i); |
duke@435 | 333 | int a_byte = (*ptr) & 0xFF; |
duke@435 | 334 | assert(a_byte == *start++, "should be the same code"); |
duke@435 | 335 | } |
duke@435 | 336 | #endif |
duke@435 | 337 | } else { |
duke@435 | 338 | // make a copy the code which is going to be patched. |
twisti@4366 | 339 | for (int i = 0; i < _bytes_to_copy; i++) { |
duke@435 | 340 | address ptr = (address)(_pc_start + i); |
duke@435 | 341 | int a_byte = (*ptr) & 0xFF; |
twisti@4366 | 342 | __ emit_int8(a_byte); |
duke@435 | 343 | *ptr = 0x90; // make the site look like a nop |
duke@435 | 344 | } |
duke@435 | 345 | } |
duke@435 | 346 | |
duke@435 | 347 | address end_of_patch = __ pc(); |
duke@435 | 348 | int bytes_to_skip = 0; |
coleenp@4037 | 349 | if (_id == load_mirror_id) { |
duke@435 | 350 | int offset = __ offset(); |
duke@435 | 351 | if (CommentedAssembly) { |
duke@435 | 352 | __ block_comment(" being_initialized check"); |
duke@435 | 353 | } |
duke@435 | 354 | assert(_obj != noreg, "must be a valid register"); |
duke@435 | 355 | Register tmp = rax; |
never@2658 | 356 | Register tmp2 = rbx; |
never@739 | 357 | __ push(tmp); |
never@2658 | 358 | __ push(tmp2); |
iveresov@2746 | 359 | // Load without verification to keep code size small. We need it because |
iveresov@2746 | 360 | // begin_initialized_entry_offset has to fit in a byte. Also, we know it's not null. |
coleenp@4037 | 361 | __ movptr(tmp2, Address(_obj, java_lang_Class::klass_offset_in_bytes())); |
duke@435 | 362 | __ get_thread(tmp); |
coleenp@4037 | 363 | __ cmpptr(tmp, Address(tmp2, InstanceKlass::init_thread_offset())); |
never@2658 | 364 | __ pop(tmp2); |
never@739 | 365 | __ pop(tmp); |
duke@435 | 366 | __ jcc(Assembler::notEqual, call_patch); |
duke@435 | 367 | |
duke@435 | 368 | // access_field patches may execute the patched code before it's |
duke@435 | 369 | // copied back into place so we need to jump back into the main |
duke@435 | 370 | // code of the nmethod to continue execution. |
duke@435 | 371 | __ jmp(_patch_site_continuation); |
duke@435 | 372 | |
duke@435 | 373 | // make sure this extra code gets skipped |
duke@435 | 374 | bytes_to_skip += __ offset() - offset; |
duke@435 | 375 | } |
duke@435 | 376 | if (CommentedAssembly) { |
duke@435 | 377 | __ block_comment("patch data encoded as movl"); |
duke@435 | 378 | } |
duke@435 | 379 | // Now emit the patch record telling the runtime how to find the |
duke@435 | 380 | // pieces of the patch. We only need 3 bytes but for readability of |
duke@435 | 381 | // the disassembly we make the data look like a movl reg, imm32, |
duke@435 | 382 | // which requires 5 bytes |
duke@435 | 383 | int sizeof_patch_record = 5; |
duke@435 | 384 | bytes_to_skip += sizeof_patch_record; |
duke@435 | 385 | |
duke@435 | 386 | // emit the offsets needed to find the code to patch |
duke@435 | 387 | int being_initialized_entry_offset = __ pc() - being_initialized_entry + sizeof_patch_record; |
duke@435 | 388 | |
twisti@4366 | 389 | __ emit_int8((unsigned char)0xB8); |
twisti@4366 | 390 | __ emit_int8(0); |
twisti@4366 | 391 | __ emit_int8(being_initialized_entry_offset); |
twisti@4366 | 392 | __ emit_int8(bytes_to_skip); |
twisti@4366 | 393 | __ emit_int8(_bytes_to_copy); |
duke@435 | 394 | address patch_info_pc = __ pc(); |
duke@435 | 395 | assert(patch_info_pc - end_of_patch == bytes_to_skip, "incorrect patch info"); |
duke@435 | 396 | |
duke@435 | 397 | address entry = __ pc(); |
duke@435 | 398 | NativeGeneralJump::insert_unconditional((address)_pc_start, entry); |
duke@435 | 399 | address target = NULL; |
coleenp@4037 | 400 | relocInfo::relocType reloc_type = relocInfo::none; |
duke@435 | 401 | switch (_id) { |
duke@435 | 402 | case access_field_id: target = Runtime1::entry_for(Runtime1::access_field_patching_id); break; |
coleenp@4037 | 403 | case load_klass_id: target = Runtime1::entry_for(Runtime1::load_klass_patching_id); reloc_type = relocInfo::metadata_type; break; |
coleenp@4037 | 404 | case load_mirror_id: target = Runtime1::entry_for(Runtime1::load_mirror_patching_id); reloc_type = relocInfo::oop_type; break; |
roland@5628 | 405 | case load_appendix_id: target = Runtime1::entry_for(Runtime1::load_appendix_patching_id); reloc_type = relocInfo::oop_type; break; |
duke@435 | 406 | default: ShouldNotReachHere(); |
duke@435 | 407 | } |
duke@435 | 408 | __ bind(call_patch); |
duke@435 | 409 | |
duke@435 | 410 | if (CommentedAssembly) { |
duke@435 | 411 | __ block_comment("patch entry point"); |
duke@435 | 412 | } |
duke@435 | 413 | __ call(RuntimeAddress(target)); |
duke@435 | 414 | assert(_patch_info_offset == (patch_info_pc - __ pc()), "must not change"); |
duke@435 | 415 | ce->add_call_info_here(_info); |
duke@435 | 416 | int jmp_off = __ offset(); |
duke@435 | 417 | __ jmp(_patch_site_entry); |
duke@435 | 418 | // Add enough nops so deoptimization can overwrite the jmp above with a call |
duke@435 | 419 | // and not destroy the world. |
duke@435 | 420 | for (int j = __ offset() ; j < jmp_off + 5 ; j++ ) { |
duke@435 | 421 | __ nop(); |
duke@435 | 422 | } |
roland@5628 | 423 | if (_id == load_klass_id || _id == load_mirror_id || _id == load_appendix_id) { |
duke@435 | 424 | CodeSection* cs = __ code_section(); |
duke@435 | 425 | RelocIterator iter(cs, (address)_pc_start, (address)(_pc_start + 1)); |
coleenp@4037 | 426 | relocInfo::change_reloc_info_for_address(&iter, (address) _pc_start, reloc_type, relocInfo::none); |
duke@435 | 427 | } |
duke@435 | 428 | } |
duke@435 | 429 | |
duke@435 | 430 | |
twisti@1730 | 431 | void DeoptimizeStub::emit_code(LIR_Assembler* ce) { |
twisti@1730 | 432 | __ bind(_entry); |
twisti@3244 | 433 | __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::deoptimize_id))); |
twisti@1730 | 434 | ce->add_call_info_here(_info); |
twisti@3244 | 435 | DEBUG_ONLY(__ should_not_reach_here()); |
twisti@1730 | 436 | } |
twisti@1730 | 437 | |
twisti@1730 | 438 | |
duke@435 | 439 | void ImplicitNullCheckStub::emit_code(LIR_Assembler* ce) { |
roland@4860 | 440 | address a; |
roland@4860 | 441 | if (_info->deoptimize_on_exception()) { |
roland@4860 | 442 | // Deoptimize, do not throw the exception, because it is probably wrong to do it here. |
roland@4860 | 443 | a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id); |
roland@4860 | 444 | } else { |
roland@4860 | 445 | a = Runtime1::entry_for(Runtime1::throw_null_pointer_exception_id); |
roland@4860 | 446 | } |
roland@4860 | 447 | |
duke@435 | 448 | ce->compilation()->implicit_exception_table()->append(_offset, __ offset()); |
duke@435 | 449 | __ bind(_entry); |
roland@4860 | 450 | __ call(RuntimeAddress(a)); |
duke@435 | 451 | ce->add_call_info_here(_info); |
roland@4860 | 452 | ce->verify_oop_map(_info); |
duke@435 | 453 | debug_only(__ should_not_reach_here()); |
duke@435 | 454 | } |
duke@435 | 455 | |
duke@435 | 456 | |
duke@435 | 457 | void SimpleExceptionStub::emit_code(LIR_Assembler* ce) { |
duke@435 | 458 | assert(__ rsp_offset() == 0, "frame size should be fixed"); |
duke@435 | 459 | |
duke@435 | 460 | __ bind(_entry); |
duke@435 | 461 | // pass the object on stack because all registers must be preserved |
duke@435 | 462 | if (_obj->is_cpu_register()) { |
duke@435 | 463 | ce->store_parameter(_obj->as_register(), 0); |
duke@435 | 464 | } |
duke@435 | 465 | __ call(RuntimeAddress(Runtime1::entry_for(_stub))); |
duke@435 | 466 | ce->add_call_info_here(_info); |
duke@435 | 467 | debug_only(__ should_not_reach_here()); |
duke@435 | 468 | } |
duke@435 | 469 | |
duke@435 | 470 | |
duke@435 | 471 | void ArrayCopyStub::emit_code(LIR_Assembler* ce) { |
duke@435 | 472 | //---------------slow case: call to native----------------- |
duke@435 | 473 | __ bind(_entry); |
duke@435 | 474 | // Figure out where the args should go |
coleenp@4037 | 475 | // This should really convert the IntrinsicID to the Method* and signature |
duke@435 | 476 | // but I don't know how to do that. |
duke@435 | 477 | // |
duke@435 | 478 | VMRegPair args[5]; |
duke@435 | 479 | BasicType signature[5] = { T_OBJECT, T_INT, T_OBJECT, T_INT, T_INT}; |
duke@435 | 480 | SharedRuntime::java_calling_convention(signature, args, 5, true); |
duke@435 | 481 | |
duke@435 | 482 | // push parameters |
duke@435 | 483 | // (src, src_pos, dest, destPos, length) |
duke@435 | 484 | Register r[5]; |
duke@435 | 485 | r[0] = src()->as_register(); |
duke@435 | 486 | r[1] = src_pos()->as_register(); |
duke@435 | 487 | r[2] = dst()->as_register(); |
duke@435 | 488 | r[3] = dst_pos()->as_register(); |
duke@435 | 489 | r[4] = length()->as_register(); |
duke@435 | 490 | |
duke@435 | 491 | // next registers will get stored on the stack |
duke@435 | 492 | for (int i = 0; i < 5 ; i++ ) { |
duke@435 | 493 | VMReg r_1 = args[i].first(); |
duke@435 | 494 | if (r_1->is_stack()) { |
duke@435 | 495 | int st_off = r_1->reg2stack() * wordSize; |
never@739 | 496 | __ movptr (Address(rsp, st_off), r[i]); |
duke@435 | 497 | } else { |
duke@435 | 498 | assert(r[i] == args[i].first()->as_Register(), "Wrong register for arg "); |
duke@435 | 499 | } |
duke@435 | 500 | } |
duke@435 | 501 | |
duke@435 | 502 | ce->align_call(lir_static_call); |
duke@435 | 503 | |
duke@435 | 504 | ce->emit_static_call_stub(); |
duke@435 | 505 | AddressLiteral resolve(SharedRuntime::get_resolve_static_call_stub(), |
duke@435 | 506 | relocInfo::static_call_type); |
duke@435 | 507 | __ call(resolve); |
duke@435 | 508 | ce->add_call_info_here(info()); |
duke@435 | 509 | |
duke@435 | 510 | #ifndef PRODUCT |
never@739 | 511 | __ incrementl(ExternalAddress((address)&Runtime1::_arraycopy_slowcase_cnt)); |
duke@435 | 512 | #endif |
duke@435 | 513 | |
duke@435 | 514 | __ jmp(_continuation); |
duke@435 | 515 | } |
duke@435 | 516 | |
ysr@777 | 517 | ///////////////////////////////////////////////////////////////////////////// |
jprovino@4542 | 518 | #if INCLUDE_ALL_GCS |
ysr@777 | 519 | |
ysr@777 | 520 | void G1PreBarrierStub::emit_code(LIR_Assembler* ce) { |
johnc@2781 | 521 | // At this point we know that marking is in progress. |
johnc@2781 | 522 | // If do_load() is true then we have to emit the |
johnc@2781 | 523 | // load of the previous value; otherwise it has already |
johnc@2781 | 524 | // been loaded into _pre_val. |
ysr@777 | 525 | |
ysr@777 | 526 | __ bind(_entry); |
ysr@777 | 527 | assert(pre_val()->is_register(), "Precondition."); |
ysr@777 | 528 | |
ysr@777 | 529 | Register pre_val_reg = pre_val()->as_register(); |
ysr@777 | 530 | |
johnc@2781 | 531 | if (do_load()) { |
johnc@2781 | 532 | ce->mem2reg(addr(), pre_val(), T_OBJECT, patch_code(), info(), false /*wide*/, false /*unaligned*/); |
johnc@2781 | 533 | } |
ysr@777 | 534 | |
apetrusenko@797 | 535 | __ cmpptr(pre_val_reg, (int32_t) NULL_WORD); |
ysr@777 | 536 | __ jcc(Assembler::equal, _continuation); |
ysr@777 | 537 | ce->store_parameter(pre_val()->as_register(), 0); |
ysr@777 | 538 | __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::g1_pre_barrier_slow_id))); |
ysr@777 | 539 | __ jmp(_continuation); |
ysr@777 | 540 | |
ysr@777 | 541 | } |
ysr@777 | 542 | |
ysr@777 | 543 | jbyte* G1PostBarrierStub::_byte_map_base = NULL; |
ysr@777 | 544 | |
ysr@777 | 545 | jbyte* G1PostBarrierStub::byte_map_base_slow() { |
ysr@777 | 546 | BarrierSet* bs = Universe::heap()->barrier_set(); |
ysr@777 | 547 | assert(bs->is_a(BarrierSet::G1SATBCTLogging), |
ysr@777 | 548 | "Must be if we're using this."); |
ysr@777 | 549 | return ((G1SATBCardTableModRefBS*)bs)->byte_map_base; |
ysr@777 | 550 | } |
ysr@777 | 551 | |
ysr@777 | 552 | void G1PostBarrierStub::emit_code(LIR_Assembler* ce) { |
ysr@777 | 553 | __ bind(_entry); |
ysr@777 | 554 | assert(addr()->is_register(), "Precondition."); |
ysr@777 | 555 | assert(new_val()->is_register(), "Precondition."); |
ysr@777 | 556 | Register new_val_reg = new_val()->as_register(); |
apetrusenko@797 | 557 | __ cmpptr(new_val_reg, (int32_t) NULL_WORD); |
ysr@777 | 558 | __ jcc(Assembler::equal, _continuation); |
never@2228 | 559 | ce->store_parameter(addr()->as_pointer_register(), 0); |
ysr@777 | 560 | __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::g1_post_barrier_slow_id))); |
ysr@777 | 561 | __ jmp(_continuation); |
ysr@777 | 562 | } |
ysr@777 | 563 | |
jprovino@4542 | 564 | #endif // INCLUDE_ALL_GCS |
ysr@777 | 565 | ///////////////////////////////////////////////////////////////////////////// |
duke@435 | 566 | |
duke@435 | 567 | #undef __ |