quick_entrypoints_x86.S revision da0a4dbede243c5ac473db88d44ba6139e7dd87e
1/* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include "asm_support_x86.S" 18 19#include "arch/quick_alloc_entrypoints.S" 20 21// For x86, the CFA is esp+4, the address above the pushed return address on the stack. 22 23 /* 24 * Macro that sets up the callee save frame to conform with 25 * Runtime::CreateCalleeSaveMethod(kSaveAll) 26 */ 27MACRO0(SETUP_SAVE_ALL_CALLEE_SAVE_FRAME) 28 PUSH edi // Save callee saves (ebx is saved/restored by the upcall) 29 PUSH esi 30 PUSH ebp 31 subl MACRO_LITERAL(16), %esp // Grow stack by 4 words, bottom word will hold Method* 32 .cfi_adjust_cfa_offset 16 33END_MACRO 34 35 /* 36 * Macro that sets up the callee save frame to conform with 37 * Runtime::CreateCalleeSaveMethod(kRefsOnly) 38 */ 39MACRO0(SETUP_REF_ONLY_CALLEE_SAVE_FRAME) 40 PUSH edi // Save callee saves (ebx is saved/restored by the upcall) 41 PUSH esi 42 PUSH ebp 43 subl MACRO_LITERAL(16), %esp // Grow stack by 4 words, bottom word will hold Method* 44 .cfi_adjust_cfa_offset 16 45END_MACRO 46 47MACRO0(RESTORE_REF_ONLY_CALLEE_SAVE_FRAME) 48 addl MACRO_LITERAL(16), %esp // Unwind stack up to return address 49 POP ebp // Restore callee saves (ebx is saved/restored by the upcall) 50 POP esi 51 POP edi 52 .cfi_adjust_cfa_offset -28 53END_MACRO 54 55 /* 56 * Macro that sets up the callee save frame to conform with 57 * Runtime::CreateCalleeSaveMethod(kRefsAndArgs) 58 */ 59MACRO0(SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME) 60 PUSH edi // Save callee saves 61 PUSH esi 62 PUSH ebp 63 PUSH ebx // Save args 64 PUSH edx 65 PUSH ecx 66 PUSH eax // Align stack, eax will be clobbered by Method* 67END_MACRO 68 69MACRO0(RESTORE_REF_AND_ARGS_CALLEE_SAVE_FRAME) 70 addl MACRO_LITERAL(4), %esp // Remove padding 71 .cfi_adjust_cfa_offset -4 72 POP ecx // Restore args except eax 73 POP edx 74 POP ebx 75 POP ebp // Restore callee saves 76 POP esi 77 POP edi 78END_MACRO 79 80 /* 81 * Macro that set calls through to artDeliverPendingExceptionFromCode, where the pending 82 * exception is Thread::Current()->exception_. 83 */ 84MACRO0(DELIVER_PENDING_EXCEPTION) 85 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save callee saves for throw 86 mov %esp, %ecx 87 // Outgoing argument set up 88 subl MACRO_LITERAL(8), %esp // Alignment padding 89 .cfi_adjust_cfa_offset 8 90 PUSH ecx // pass SP 91 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 92 .cfi_adjust_cfa_offset 4 93 call SYMBOL(artDeliverPendingExceptionFromCode) // artDeliverPendingExceptionFromCode(Thread*, SP) 94 int3 // unreached 95END_MACRO 96 97MACRO2(NO_ARG_RUNTIME_EXCEPTION, c_name, cxx_name) 98 DEFINE_FUNCTION VAR(c_name, 0) 99 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save all registers as basis for long jump context 100 mov %esp, %ecx 101 // Outgoing argument set up 102 subl MACRO_LITERAL(8), %esp // alignment padding 103 .cfi_adjust_cfa_offset 8 104 PUSH ecx // pass SP 105 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 106 .cfi_adjust_cfa_offset 4 107 call VAR(cxx_name, 1) // cxx_name(Thread*, SP) 108 int3 // unreached 109 END_FUNCTION VAR(c_name, 0) 110END_MACRO 111 112MACRO2(ONE_ARG_RUNTIME_EXCEPTION, c_name, cxx_name) 113 DEFINE_FUNCTION VAR(c_name, 0) 114 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save all registers as basis for long jump context 115 mov %esp, %ecx 116 // Outgoing argument set up 117 PUSH eax // alignment padding 118 PUSH ecx // pass SP 119 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 120 .cfi_adjust_cfa_offset 4 121 PUSH eax // pass arg1 122 call VAR(cxx_name, 1) // cxx_name(arg1, Thread*, SP) 123 int3 // unreached 124 END_FUNCTION VAR(c_name, 0) 125END_MACRO 126 127MACRO2(TWO_ARG_RUNTIME_EXCEPTION, c_name, cxx_name) 128 DEFINE_FUNCTION VAR(c_name, 0) 129 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save all registers as basis for long jump context 130 mov %esp, %edx 131 // Outgoing argument set up 132 PUSH edx // pass SP 133 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 134 .cfi_adjust_cfa_offset 4 135 PUSH ecx // pass arg2 136 PUSH eax // pass arg1 137 call VAR(cxx_name, 1) // cxx_name(arg1, arg2, Thread*, SP) 138 int3 // unreached 139 END_FUNCTION VAR(c_name, 0) 140END_MACRO 141 142 /* 143 * Called by managed code to create and deliver a NullPointerException. 144 */ 145NO_ARG_RUNTIME_EXCEPTION art_quick_throw_null_pointer_exception, artThrowNullPointerExceptionFromCode 146 147 /* 148 * Called by managed code to create and deliver an ArithmeticException. 149 */ 150NO_ARG_RUNTIME_EXCEPTION art_quick_throw_div_zero, artThrowDivZeroFromCode 151 152 /* 153 * Called by managed code to create and deliver a StackOverflowError. 154 */ 155NO_ARG_RUNTIME_EXCEPTION art_quick_throw_stack_overflow, artThrowStackOverflowFromCode 156 157 /* 158 * Called by managed code, saves callee saves and then calls artThrowException 159 * that will place a mock Method* at the bottom of the stack. Arg1 holds the exception. 160 */ 161ONE_ARG_RUNTIME_EXCEPTION art_quick_deliver_exception, artDeliverExceptionFromCode 162 163 /* 164 * Called by managed code to create and deliver a NoSuchMethodError. 165 */ 166ONE_ARG_RUNTIME_EXCEPTION art_quick_throw_no_such_method, artThrowNoSuchMethodFromCode 167 168 /* 169 * Called by managed code to create and deliver an ArrayIndexOutOfBoundsException. Arg1 holds 170 * index, arg2 holds limit. 171 */ 172TWO_ARG_RUNTIME_EXCEPTION art_quick_throw_array_bounds, artThrowArrayBoundsFromCode 173 174 /* 175 * All generated callsites for interface invokes and invocation slow paths will load arguments 176 * as usual - except instead of loading arg0/r0 with the target Method*, arg0/r0 will contain 177 * the method_idx. This wrapper will save arg1-arg3, load the caller's Method*, align the 178 * stack and call the appropriate C helper. 179 * NOTE: "this" is first visible argument of the target, and so can be found in arg1/r1. 180 * 181 * The helper will attempt to locate the target and return a 64-bit result in r0/r1 consisting 182 * of the target Method* in r0 and method->code_ in r1. 183 * 184 * If unsuccessful, the helper will return NULL/NULL. There will bea pending exception in the 185 * thread and we branch to another stub to deliver it. 186 * 187 * On success this wrapper will restore arguments and *jump* to the target, leaving the lr 188 * pointing back to the original caller. 189 */ 190MACRO2(INVOKE_TRAMPOLINE, c_name, cxx_name) 191 DEFINE_FUNCTION VAR(c_name, 0) 192 // Set up the callee save frame to conform with Runtime::CreateCalleeSaveMethod(kRefsAndArgs) 193 // return address 194 PUSH edi 195 PUSH esi 196 PUSH ebp 197 PUSH ebx // Save args 198 PUSH edx 199 PUSH ecx 200 PUSH eax // <-- callee save Method* to go here 201 movl %esp, %edx // remember SP 202 // Outgoing argument set up 203 subl MACRO_LITERAL(12), %esp // alignment padding 204 .cfi_adjust_cfa_offset 12 205 PUSH edx // pass SP 206 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 207 .cfi_adjust_cfa_offset 4 208 pushl 32(%edx) // pass caller Method* 209 .cfi_adjust_cfa_offset 4 210 PUSH ecx // pass arg2 211 PUSH eax // pass arg1 212 call VAR(cxx_name, 1) // cxx_name(arg1, arg2, arg3, Thread*, SP) 213 movl %edx, %edi // save code pointer in EDI 214 addl MACRO_LITERAL(36), %esp // Pop arguments skip eax 215 .cfi_adjust_cfa_offset -36 216 POP ecx // Restore args except eax 217 POP edx 218 POP ebx 219 POP ebp // Restore callee saves 220 POP esi 221 // Swap EDI callee save with code pointer. 222 xchgl %edi, (%esp) 223 testl %eax, %eax // Branch forward if exception pending. 224 jz 1f 225 // Tail call to intended method. 226 ret 2271: 228 addl MACRO_LITERAL(4), %esp // Pop code pointer off stack 229 .cfi_adjust_cfa_offset -4 230 DELIVER_PENDING_EXCEPTION 231 END_FUNCTION VAR(c_name, 0) 232END_MACRO 233 234INVOKE_TRAMPOLINE art_quick_invoke_interface_trampoline, artInvokeInterfaceTrampoline 235INVOKE_TRAMPOLINE art_quick_invoke_interface_trampoline_with_access_check, artInvokeInterfaceTrampolineWithAccessCheck 236 237INVOKE_TRAMPOLINE art_quick_invoke_static_trampoline_with_access_check, artInvokeStaticTrampolineWithAccessCheck 238INVOKE_TRAMPOLINE art_quick_invoke_direct_trampoline_with_access_check, artInvokeDirectTrampolineWithAccessCheck 239INVOKE_TRAMPOLINE art_quick_invoke_super_trampoline_with_access_check, artInvokeSuperTrampolineWithAccessCheck 240INVOKE_TRAMPOLINE art_quick_invoke_virtual_trampoline_with_access_check, artInvokeVirtualTrampolineWithAccessCheck 241 242 /* 243 * Quick invocation stub. 244 * On entry: 245 * [sp] = return address 246 * [sp + 4] = method pointer 247 * [sp + 8] = argument array or NULL for no argument methods 248 * [sp + 12] = size of argument array in bytes 249 * [sp + 16] = (managed) thread pointer 250 * [sp + 20] = JValue* result 251 * [sp + 24] = result type char 252 */ 253DEFINE_FUNCTION art_quick_invoke_stub 254 PUSH ebp // save ebp 255 PUSH ebx // save ebx 256 mov %esp, %ebp // copy value of stack pointer into base pointer 257 .cfi_def_cfa_register ebp 258 mov 20(%ebp), %ebx // get arg array size 259 addl LITERAL(28), %ebx // reserve space for return addr, method*, ebx, and ebp in frame 260 andl LITERAL(0xFFFFFFF0), %ebx // align frame size to 16 bytes 261 subl LITERAL(12), %ebx // remove space for return address, ebx, and ebp 262 subl %ebx, %esp // reserve stack space for argument array 263 lea 4(%esp), %eax // use stack pointer + method ptr as dest for memcpy 264 pushl 20(%ebp) // push size of region to memcpy 265 pushl 16(%ebp) // push arg array as source of memcpy 266 pushl %eax // push stack pointer as destination of memcpy 267 call SYMBOL(memcpy) // (void*, const void*, size_t) 268 addl LITERAL(12), %esp // pop arguments to memcpy 269 movl LITERAL(0), (%esp) // store NULL for method* 270 mov 12(%ebp), %eax // move method pointer into eax 271 mov 4(%esp), %ecx // copy arg1 into ecx 272 mov 8(%esp), %edx // copy arg2 into edx 273 mov 12(%esp), %ebx // copy arg3 into ebx 274 call *METHOD_CODE_OFFSET(%eax) // call the method 275 mov %ebp, %esp // restore stack pointer 276 .cfi_def_cfa_register esp 277 POP ebx // pop ebx 278 POP ebp // pop ebp 279 mov 20(%esp), %ecx // get result pointer 280 cmpl LITERAL(68), 24(%esp) // test if result type char == 'D' 281 je return_double_quick 282 cmpl LITERAL(70), 24(%esp) // test if result type char == 'F' 283 je return_float_quick 284 mov %eax, (%ecx) // store the result 285 mov %edx, 4(%ecx) // store the other half of the result 286 ret 287return_double_quick: 288return_float_quick: 289 movsd %xmm0, (%ecx) // store the floating point result 290 ret 291END_FUNCTION art_quick_invoke_stub 292 293MACRO3(NO_ARG_DOWNCALL, c_name, cxx_name, return_macro) 294 DEFINE_FUNCTION VAR(c_name, 0) 295 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 296 mov %esp, %edx // remember SP 297 // Outgoing argument set up 298 subl MACRO_LITERAL(8), %esp // push padding 299 .cfi_adjust_cfa_offset 8 300 PUSH edx // pass SP 301 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 302 .cfi_adjust_cfa_offset 4 303 call VAR(cxx_name, 1) // cxx_name(Thread*, SP) 304 addl MACRO_LITERAL(16), %esp // pop arguments 305 .cfi_adjust_cfa_offset -16 306 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 307 CALL_MACRO(return_macro, 2) // return or deliver exception 308 END_FUNCTION VAR(c_name, 0) 309END_MACRO 310 311MACRO3(ONE_ARG_DOWNCALL, c_name, cxx_name, return_macro) 312 DEFINE_FUNCTION VAR(c_name, 0) 313 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 314 mov %esp, %edx // remember SP 315 // Outgoing argument set up 316 PUSH eax // push padding 317 PUSH edx // pass SP 318 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 319 .cfi_adjust_cfa_offset 4 320 PUSH eax // pass arg1 321 call VAR(cxx_name, 1) // cxx_name(arg1, Thread*, SP) 322 addl MACRO_LITERAL(16), %esp // pop arguments 323 .cfi_adjust_cfa_offset -16 324 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 325 CALL_MACRO(return_macro, 2) // return or deliver exception 326 END_FUNCTION VAR(c_name, 0) 327END_MACRO 328 329MACRO3(TWO_ARG_DOWNCALL, c_name, cxx_name, return_macro) 330 DEFINE_FUNCTION VAR(c_name, 0) 331 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 332 mov %esp, %edx // remember SP 333 // Outgoing argument set up 334 PUSH edx // pass SP 335 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 336 .cfi_adjust_cfa_offset 4 337 PUSH ecx // pass arg2 338 PUSH eax // pass arg1 339 call VAR(cxx_name, 1) // cxx_name(arg1, arg2, Thread*, SP) 340 addl MACRO_LITERAL(16), %esp // pop arguments 341 .cfi_adjust_cfa_offset -16 342 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 343 CALL_MACRO(return_macro, 2) // return or deliver exception 344 END_FUNCTION VAR(c_name, 0) 345END_MACRO 346 347MACRO3(THREE_ARG_DOWNCALL, c_name, cxx_name, return_macro) 348 DEFINE_FUNCTION VAR(c_name, 0) 349 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 350 mov %esp, %ebx // remember SP 351 // Outgoing argument set up 352 subl MACRO_LITERAL(12), %esp // alignment padding 353 .cfi_adjust_cfa_offset 12 354 PUSH ebx // pass SP 355 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 356 .cfi_adjust_cfa_offset 4 357 PUSH edx // pass arg3 358 PUSH ecx // pass arg2 359 PUSH eax // pass arg1 360 call VAR(cxx_name, 1) // cxx_name(arg1, arg2, arg3, Thread*, SP) 361 addl MACRO_LITERAL(32), %esp // pop arguments 362 .cfi_adjust_cfa_offset -32 363 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 364 CALL_MACRO(return_macro, 2) // return or deliver exception 365 END_FUNCTION VAR(c_name, 0) 366END_MACRO 367 368MACRO0(RETURN_IF_RESULT_IS_NON_ZERO) 369 testl %eax, %eax // eax == 0 ? 370 jz 1f // if eax == 0 goto 1 371 ret // return 3721: // deliver exception on current thread 373 DELIVER_PENDING_EXCEPTION 374END_MACRO 375 376MACRO0(RETURN_IF_EAX_ZERO) 377 testl %eax, %eax // eax == 0 ? 378 jnz 1f // if eax != 0 goto 1 379 ret // return 3801: // deliver exception on current thread 381 DELIVER_PENDING_EXCEPTION 382END_MACRO 383 384MACRO0(RETURN_OR_DELIVER_PENDING_EXCEPTION) 385 mov %fs:THREAD_EXCEPTION_OFFSET, %ebx // get exception field 386 testl %ebx, %ebx // ebx == 0 ? 387 jnz 1f // if ebx != 0 goto 1 388 ret // return 3891: // deliver exception on current thread 390 DELIVER_PENDING_EXCEPTION 391END_MACRO 392 393// Generate the allocation entrypoints for each allocator. 394GENERATE_ALL_ALLOC_ENTRYPOINTS 395 396TWO_ARG_DOWNCALL art_quick_resolve_string, artResolveStringFromCode, RETURN_IF_RESULT_IS_NON_ZERO 397TWO_ARG_DOWNCALL art_quick_initialize_static_storage, artInitializeStaticStorageFromCode, RETURN_IF_RESULT_IS_NON_ZERO 398TWO_ARG_DOWNCALL art_quick_initialize_type, artInitializeTypeFromCode, RETURN_IF_RESULT_IS_NON_ZERO 399TWO_ARG_DOWNCALL art_quick_initialize_type_and_verify_access, artInitializeTypeAndVerifyAccessFromCode, RETURN_IF_RESULT_IS_NON_ZERO 400 401TWO_ARG_DOWNCALL art_quick_handle_fill_data, artHandleFillArrayDataFromCode, RETURN_IF_EAX_ZERO 402 403DEFINE_FUNCTION art_quick_lock_object 404 testl %eax, %eax // null check object/eax 405 jz slow_lock 406retry_lock: 407 movl LOCK_WORD_OFFSET(%eax), %ecx // ecx := lock word 408 test LITERAL(0xC0000000), %ecx // test the 2 high bits. 409 jne slow_lock // slow path if either of the two high bits are set. 410 movl %fs:THREAD_ID_OFFSET, %edx // edx := thread id 411 test %ecx, %ecx 412 jnz already_thin // lock word contains a thin lock 413 // unlocked case - %edx holds thread id with count of 0 414 movl %eax, %ecx // remember object in case of retry 415 xor %eax, %eax // eax == 0 for comparison with lock word in cmpxchg 416 lock cmpxchg %edx, LOCK_WORD_OFFSET(%ecx) 417 jnz cmpxchg_fail // cmpxchg failed retry 418 ret 419cmpxchg_fail: 420 movl %ecx, %eax // restore eax 421 jmp retry_lock 422already_thin: 423 cmpw %ax, %dx // do we hold the lock already? 424 jne slow_lock 425 addl LITERAL(65536), %eax // increment recursion count 426 test LITERAL(0xC0000000), %eax // overflowed if either of top two bits are set 427 jne slow_lock // count overflowed so go slow 428 movl %eax, LOCK_WORD_OFFSET(%ecx) // update lockword, cmpxchg not necessary as we hold lock 429 ret 430slow_lock: 431 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 432 mov %esp, %edx // remember SP 433 // Outgoing argument set up 434 PUSH eax // push padding 435 PUSH edx // pass SP 436 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 437 .cfi_adjust_cfa_offset 4 438 PUSH eax // pass object 439 call artLockObjectFromCode // artLockObjectFromCode(object, Thread*, SP) 440 addl MACRO_LITERAL(16), %esp // pop arguments 441 .cfi_adjust_cfa_offset -16 442 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 443 RETURN_IF_EAX_ZERO 444END_FUNCTION art_quick_lock_object 445 446DEFINE_FUNCTION art_quick_unlock_object 447 testl %eax, %eax // null check object/eax 448 jz slow_unlock 449 movl LOCK_WORD_OFFSET(%eax), %ecx // ecx := lock word 450 movl %fs:THREAD_ID_OFFSET, %edx // edx := thread id 451 test %ecx, %ecx 452 jb slow_unlock // lock word contains a monitor 453 cmpw %cx, %dx // does the thread id match? 454 jne slow_unlock 455 cmpl LITERAL(65536), %ecx 456 jae recursive_thin_unlock 457 movl LITERAL(0), LOCK_WORD_OFFSET(%eax) 458 ret 459recursive_thin_unlock: 460 subl LITERAL(65536), %ecx 461 mov %ecx, LOCK_WORD_OFFSET(%eax) 462 ret 463slow_unlock: 464 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 465 mov %esp, %edx // remember SP 466 // Outgoing argument set up 467 PUSH eax // push padding 468 PUSH edx // pass SP 469 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 470 .cfi_adjust_cfa_offset 4 471 PUSH eax // pass object 472 call artUnlockObjectFromCode // artUnlockObjectFromCode(object, Thread*, SP) 473 addl MACRO_LITERAL(16), %esp // pop arguments 474 .cfi_adjust_cfa_offset -16 475 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 476 RETURN_IF_EAX_ZERO 477END_FUNCTION art_quick_unlock_object 478 479DEFINE_FUNCTION art_quick_is_assignable 480 PUSH eax // alignment padding 481 PUSH ecx // pass arg2 - obj->klass 482 PUSH eax // pass arg1 - checked class 483 call SYMBOL(artIsAssignableFromCode) // (Class* klass, Class* ref_klass) 484 addl LITERAL(12), %esp // pop arguments 485 .cfi_adjust_cfa_offset -12 486 ret 487END_FUNCTION art_quick_is_assignable 488 489DEFINE_FUNCTION art_quick_check_cast 490 PUSH eax // alignment padding 491 PUSH ecx // pass arg2 - obj->klass 492 PUSH eax // pass arg1 - checked class 493 call SYMBOL(artIsAssignableFromCode) // (Class* klass, Class* ref_klass) 494 testl %eax, %eax 495 jz 1f // jump forward if not assignable 496 addl LITERAL(12), %esp // pop arguments 497 .cfi_adjust_cfa_offset -12 498 ret 4991: 500 POP eax // pop arguments 501 POP ecx 502 addl LITERAL(4), %esp 503 .cfi_adjust_cfa_offset -12 504 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save all registers as basis for long jump context 505 mov %esp, %edx 506 // Outgoing argument set up 507 PUSH edx // pass SP 508 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 509 .cfi_adjust_cfa_offset 4 510 PUSH ecx // pass arg2 511 PUSH eax // pass arg1 512 call SYMBOL(artThrowClassCastException) // (Class* a, Class* b, Thread*, SP) 513 int3 // unreached 514END_FUNCTION art_quick_check_cast 515 516 /* 517 * Entry from managed code for array put operations of objects where the value being stored 518 * needs to be checked for compatibility. 519 * eax = array, ecx = index, edx = value 520 */ 521DEFINE_FUNCTION art_quick_aput_obj_with_null_and_bound_check 522 testl %eax, %eax 523 jnz art_quick_aput_obj_with_bound_check 524 jmp art_quick_throw_null_pointer_exception 525END_FUNCTION art_quick_aput_obj_with_null_and_bound_check 526 527DEFINE_FUNCTION art_quick_aput_obj_with_bound_check 528 movl ARRAY_LENGTH_OFFSET(%eax), %ebx 529 cmpl %ebx, %ecx 530 jb art_quick_aput_obj 531 mov %ecx, %eax 532 mov %ebx, %ecx 533 jmp art_quick_throw_array_bounds 534END_FUNCTION art_quick_aput_obj_with_bound_check 535 536DEFINE_FUNCTION art_quick_aput_obj 537 test %edx, %edx // store of null 538 jz do_aput_null 539 movl CLASS_OFFSET(%eax), %ebx 540 movl CLASS_COMPONENT_TYPE_OFFSET(%ebx), %ebx 541 cmpl CLASS_OFFSET(%edx), %ebx // value's type == array's component type - trivial assignability 542 jne check_assignability 543do_aput: 544 movl %edx, OBJECT_ARRAY_DATA_OFFSET(%eax, %ecx, 4) 545 movl %fs:THREAD_CARD_TABLE_OFFSET, %edx 546 shrl LITERAL(7), %eax 547 movb %dl, (%edx, %eax) 548 ret 549do_aput_null: 550 movl %edx, OBJECT_ARRAY_DATA_OFFSET(%eax, %ecx, 4) 551 ret 552check_assignability: 553 PUSH eax // save arguments 554 PUSH ecx 555 PUSH edx 556 subl LITERAL(8), %esp // alignment padding 557 .cfi_adjust_cfa_offset 8 558 pushl CLASS_OFFSET(%edx) // pass arg2 - type of the value to be stored 559 .cfi_adjust_cfa_offset 4 560 PUSH ebx // pass arg1 - component type of the array 561 call SYMBOL(artIsAssignableFromCode) // (Class* a, Class* b) 562 addl LITERAL(16), %esp // pop arguments 563 .cfi_adjust_cfa_offset -16 564 testl %eax, %eax 565 jz throw_array_store_exception 566 POP edx 567 POP ecx 568 POP eax 569 movl %edx, OBJECT_ARRAY_DATA_OFFSET(%eax, %ecx, 4) // do the aput 570 movl %fs:THREAD_CARD_TABLE_OFFSET, %edx 571 shrl LITERAL(7), %eax 572 movb %dl, (%edx, %eax) 573 ret 574throw_array_store_exception: 575 POP edx 576 POP ecx 577 POP eax 578 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save all registers as basis for long jump context 579 mov %esp, %ecx 580 // Outgoing argument set up 581 PUSH ecx // pass SP 582 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 583 .cfi_adjust_cfa_offset 4 584 PUSH edx // pass arg2 - value 585 PUSH eax // pass arg1 - array 586 call SYMBOL(artThrowArrayStoreException) // (array, value, Thread*, SP) 587 int3 // unreached 588END_FUNCTION art_quick_aput_obj 589 590DEFINE_FUNCTION art_quick_memcpy 591 PUSH edx // pass arg3 592 PUSH ecx // pass arg2 593 PUSH eax // pass arg1 594 call SYMBOL(memcpy) // (void*, const void*, size_t) 595 addl LITERAL(12), %esp // pop arguments 596 .cfi_adjust_cfa_offset -12 597 ret 598END_FUNCTION art_quick_memcpy 599 600NO_ARG_DOWNCALL art_quick_test_suspend, artTestSuspendFromCode, ret 601 602DEFINE_FUNCTION art_quick_fmod 603 subl LITERAL(12), %esp // alignment padding 604 .cfi_adjust_cfa_offset 12 605 PUSH ebx // pass arg4 b.hi 606 PUSH edx // pass arg3 b.lo 607 PUSH ecx // pass arg2 a.hi 608 PUSH eax // pass arg1 a.lo 609 call SYMBOL(fmod) // (jdouble a, jdouble b) 610 fstpl (%esp) // pop return value off fp stack 611 movsd (%esp), %xmm0 // place into %xmm0 612 addl LITERAL(28), %esp // pop arguments 613 .cfi_adjust_cfa_offset -28 614 ret 615END_FUNCTION art_quick_fmod 616 617DEFINE_FUNCTION art_quick_fmodf 618 PUSH eax // alignment padding 619 PUSH ecx // pass arg2 b 620 PUSH eax // pass arg1 a 621 call SYMBOL(fmodf) // (jfloat a, jfloat b) 622 fstps (%esp) // pop return value off fp stack 623 movss (%esp), %xmm0 // place into %xmm0 624 addl LITERAL(12), %esp // pop arguments 625 .cfi_adjust_cfa_offset -12 626 ret 627END_FUNCTION art_quick_fmodf 628 629DEFINE_FUNCTION art_quick_l2d 630 PUSH ecx // push arg2 a.hi 631 PUSH eax // push arg1 a.lo 632 fildll (%esp) // load as integer and push into st0 633 fstpl (%esp) // pop value off fp stack as double 634 movsd (%esp), %xmm0 // place into %xmm0 635 addl LITERAL(8), %esp // pop arguments 636 .cfi_adjust_cfa_offset -8 637 ret 638END_FUNCTION art_quick_l2d 639 640DEFINE_FUNCTION art_quick_l2f 641 PUSH ecx // push arg2 a.hi 642 PUSH eax // push arg1 a.lo 643 fildll (%esp) // load as integer and push into st0 644 fstps (%esp) // pop value off fp stack as a single 645 movss (%esp), %xmm0 // place into %xmm0 646 addl LITERAL(8), %esp // pop argument 647 .cfi_adjust_cfa_offset -8 648 ret 649END_FUNCTION art_quick_l2f 650 651DEFINE_FUNCTION art_quick_d2l 652 PUSH eax // alignment padding 653 PUSH ecx // pass arg2 a.hi 654 PUSH eax // pass arg1 a.lo 655 call SYMBOL(art_d2l) // (jdouble a) 656 addl LITERAL(12), %esp // pop arguments 657 .cfi_adjust_cfa_offset -12 658 ret 659END_FUNCTION art_quick_d2l 660 661DEFINE_FUNCTION art_quick_f2l 662 subl LITERAL(8), %esp // alignment padding 663 .cfi_adjust_cfa_offset 8 664 PUSH eax // pass arg1 a 665 call SYMBOL(art_f2l) // (jfloat a) 666 addl LITERAL(12), %esp // pop arguments 667 .cfi_adjust_cfa_offset -12 668 ret 669END_FUNCTION art_quick_f2l 670 671DEFINE_FUNCTION art_quick_idivmod 672 cmpl LITERAL(0x80000000), %eax 673 je check_arg2 // special case 674args_ok: 675 cdq // edx:eax = sign extend eax 676 idiv %ecx // (edx,eax) = (edx:eax % ecx, edx:eax / ecx) 677 ret 678check_arg2: 679 cmpl LITERAL(-1), %ecx 680 jne args_ok 681 xorl %edx, %edx 682 ret // eax already holds min int 683END_FUNCTION art_quick_idivmod 684 685DEFINE_FUNCTION art_quick_ldiv 686 subl LITERAL(12), %esp // alignment padding 687 .cfi_adjust_cfa_offset 12 688 PUSH ebx // pass arg4 b.hi 689 PUSH edx // pass arg3 b.lo 690 PUSH ecx // pass arg2 a.hi 691 PUSH eax // pass arg1 a.lo 692 call SYMBOL(artLdiv) // (jlong a, jlong b) 693 addl LITERAL(28), %esp // pop arguments 694 .cfi_adjust_cfa_offset -28 695 ret 696END_FUNCTION art_quick_ldiv 697 698DEFINE_FUNCTION art_quick_lmod 699 subl LITERAL(12), %esp // alignment padding 700 .cfi_adjust_cfa_offset 12 701 PUSH ebx // pass arg4 b.hi 702 PUSH edx // pass arg3 b.lo 703 PUSH ecx // pass arg2 a.hi 704 PUSH eax // pass arg1 a.lo 705 call SYMBOL(artLmod) // (jlong a, jlong b) 706 addl LITERAL(28), %esp // pop arguments 707 .cfi_adjust_cfa_offset -28 708 ret 709END_FUNCTION art_quick_lmod 710 711DEFINE_FUNCTION art_quick_lmul 712 imul %eax, %ebx // ebx = a.lo(eax) * b.hi(ebx) 713 imul %edx, %ecx // ecx = b.lo(edx) * a.hi(ecx) 714 mul %edx // edx:eax = a.lo(eax) * b.lo(edx) 715 add %ebx, %ecx 716 add %ecx, %edx // edx += (a.lo * b.hi) + (b.lo * a.hi) 717 ret 718END_FUNCTION art_quick_lmul 719 720DEFINE_FUNCTION art_quick_lshl 721 // ecx:eax << edx 722 xchg %edx, %ecx 723 shld %cl,%eax,%edx 724 shl %cl,%eax 725 test LITERAL(32), %cl 726 jz 1f 727 mov %eax, %edx 728 xor %eax, %eax 7291: 730 ret 731END_FUNCTION art_quick_lshl 732 733DEFINE_FUNCTION art_quick_lshr 734 // ecx:eax >> edx 735 xchg %edx, %ecx 736 shrd %cl,%edx,%eax 737 sar %cl,%edx 738 test LITERAL(32),%cl 739 jz 1f 740 mov %edx, %eax 741 sar LITERAL(31), %edx 7421: 743 ret 744END_FUNCTION art_quick_lshr 745 746DEFINE_FUNCTION art_quick_lushr 747 // ecx:eax >>> edx 748 xchg %edx, %ecx 749 shrd %cl,%edx,%eax 750 shr %cl,%edx 751 test LITERAL(32),%cl 752 jz 1f 753 mov %edx, %eax 754 xor %edx, %edx 7551: 756 ret 757END_FUNCTION art_quick_lushr 758 759DEFINE_FUNCTION art_quick_set32_instance 760 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 761 mov %esp, %ebx // remember SP 762 subl LITERAL(8), %esp // alignment padding 763 .cfi_adjust_cfa_offset 8 764 PUSH ebx // pass SP 765 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 766 .cfi_adjust_cfa_offset 4 767 mov 32(%ebx), %ebx // get referrer 768 PUSH ebx // pass referrer 769 PUSH edx // pass new_val 770 PUSH ecx // pass object 771 PUSH eax // pass field_idx 772 call SYMBOL(artSet32InstanceFromCode) // (field_idx, Object*, new_val, referrer, Thread*, SP) 773 addl LITERAL(32), %esp // pop arguments 774 .cfi_adjust_cfa_offset -32 775 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 776 RETURN_IF_EAX_ZERO // return or deliver exception 777END_FUNCTION art_quick_set32_instance 778 779DEFINE_FUNCTION art_quick_set64_instance 780 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 781 subl LITERAL(8), %esp // alignment padding 782 .cfi_adjust_cfa_offset 8 783 PUSH esp // pass SP-8 784 addl LITERAL(8), (%esp) // fix SP on stack by adding 8 785 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 786 .cfi_adjust_cfa_offset 4 787 PUSH ebx // pass high half of new_val 788 PUSH edx // pass low half of new_val 789 PUSH ecx // pass object 790 PUSH eax // pass field_idx 791 call SYMBOL(artSet64InstanceFromCode) // (field_idx, Object*, new_val, Thread*, SP) 792 addl LITERAL(32), %esp // pop arguments 793 .cfi_adjust_cfa_offset -32 794 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 795 RETURN_IF_EAX_ZERO // return or deliver exception 796END_FUNCTION art_quick_set64_instance 797 798DEFINE_FUNCTION art_quick_set_obj_instance 799 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 800 mov %esp, %ebx // remember SP 801 subl LITERAL(8), %esp // alignment padding 802 .cfi_adjust_cfa_offset 8 803 PUSH ebx // pass SP 804 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 805 .cfi_adjust_cfa_offset 4 806 mov 32(%ebx), %ebx // get referrer 807 PUSH ebx // pass referrer 808 PUSH edx // pass new_val 809 PUSH ecx // pass object 810 PUSH eax // pass field_idx 811 call SYMBOL(artSetObjInstanceFromCode) // (field_idx, Object*, new_val, referrer, Thread*, SP) 812 addl LITERAL(32), %esp // pop arguments 813 .cfi_adjust_cfa_offset -32 814 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 815 RETURN_IF_EAX_ZERO // return or deliver exception 816END_FUNCTION art_quick_set_obj_instance 817 818DEFINE_FUNCTION art_quick_get32_instance 819 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 820 mov %esp, %ebx // remember SP 821 mov 32(%esp), %edx // get referrer 822 subl LITERAL(12), %esp // alignment padding 823 .cfi_adjust_cfa_offset 12 824 PUSH ebx // pass SP 825 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 826 .cfi_adjust_cfa_offset 4 827 PUSH edx // pass referrer 828 PUSH ecx // pass object 829 PUSH eax // pass field_idx 830 call SYMBOL(artGet32InstanceFromCode) // (field_idx, Object*, referrer, Thread*, SP) 831 addl LITERAL(32), %esp // pop arguments 832 .cfi_adjust_cfa_offset -32 833 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 834 RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception 835END_FUNCTION art_quick_get32_instance 836 837DEFINE_FUNCTION art_quick_get64_instance 838 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 839 mov %esp, %ebx // remember SP 840 mov 32(%esp), %edx // get referrer 841 subl LITERAL(12), %esp // alignment padding 842 .cfi_adjust_cfa_offset 12 843 PUSH ebx // pass SP 844 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 845 .cfi_adjust_cfa_offset 4 846 PUSH edx // pass referrer 847 PUSH ecx // pass object 848 PUSH eax // pass field_idx 849 call SYMBOL(artGet64InstanceFromCode) // (field_idx, Object*, referrer, Thread*, SP) 850 addl LITERAL(32), %esp // pop arguments 851 .cfi_adjust_cfa_offset -32 852 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 853 RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception 854END_FUNCTION art_quick_get64_instance 855 856DEFINE_FUNCTION art_quick_get_obj_instance 857 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 858 mov %esp, %ebx // remember SP 859 mov 32(%esp), %edx // get referrer 860 subl LITERAL(12), %esp // alignment padding 861 .cfi_adjust_cfa_offset 12 862 PUSH ebx // pass SP 863 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 864 .cfi_adjust_cfa_offset 4 865 PUSH edx // pass referrer 866 PUSH ecx // pass object 867 PUSH eax // pass field_idx 868 call SYMBOL(artGetObjInstanceFromCode) // (field_idx, Object*, referrer, Thread*, SP) 869 addl LITERAL(32), %esp // pop arguments 870 .cfi_adjust_cfa_offset -32 871 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 872 RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception 873END_FUNCTION art_quick_get_obj_instance 874 875DEFINE_FUNCTION art_quick_set32_static 876 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 877 mov %esp, %ebx // remember SP 878 mov 32(%esp), %edx // get referrer 879 subl LITERAL(12), %esp // alignment padding 880 .cfi_adjust_cfa_offset 12 881 PUSH ebx // pass SP 882 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 883 .cfi_adjust_cfa_offset 4 884 PUSH edx // pass referrer 885 PUSH ecx // pass new_val 886 PUSH eax // pass field_idx 887 call SYMBOL(artSet32StaticFromCode) // (field_idx, new_val, referrer, Thread*, SP) 888 addl LITERAL(32), %esp // pop arguments 889 .cfi_adjust_cfa_offset -32 890 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 891 RETURN_IF_EAX_ZERO // return or deliver exception 892END_FUNCTION art_quick_set32_static 893 894DEFINE_FUNCTION art_quick_set64_static 895 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 896 mov %esp, %ebx // remember SP 897 subl LITERAL(8), %esp // alignment padding 898 .cfi_adjust_cfa_offset 8 899 PUSH ebx // pass SP 900 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 901 .cfi_adjust_cfa_offset 4 902 mov 32(%ebx), %ebx // get referrer 903 PUSH edx // pass high half of new_val 904 PUSH ecx // pass low half of new_val 905 PUSH ebx // pass referrer 906 PUSH eax // pass field_idx 907 call SYMBOL(artSet64StaticFromCode) // (field_idx, referrer, new_val, Thread*, SP) 908 addl LITERAL(32), %esp // pop arguments 909 .cfi_adjust_cfa_offset -32 910 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 911 RETURN_IF_EAX_ZERO // return or deliver exception 912END_FUNCTION art_quick_set64_static 913 914DEFINE_FUNCTION art_quick_set_obj_static 915 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 916 mov %esp, %ebx // remember SP 917 mov 32(%esp), %edx // get referrer 918 subl LITERAL(12), %esp // alignment padding 919 .cfi_adjust_cfa_offset 12 920 PUSH ebx // pass SP 921 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 922 .cfi_adjust_cfa_offset 4 923 PUSH edx // pass referrer 924 PUSH ecx // pass new_val 925 PUSH eax // pass field_idx 926 call SYMBOL(artSetObjStaticFromCode) // (field_idx, new_val, referrer, Thread*, SP) 927 addl LITERAL(32), %esp // pop arguments 928 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 929 RETURN_IF_EAX_ZERO // return or deliver exception 930END_FUNCTION art_quick_set_obj_static 931 932DEFINE_FUNCTION art_quick_get32_static 933 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 934 mov %esp, %edx // remember SP 935 mov 32(%esp), %ecx // get referrer 936 PUSH edx // pass SP 937 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 938 .cfi_adjust_cfa_offset 4 939 PUSH ecx // pass referrer 940 PUSH eax // pass field_idx 941 call SYMBOL(artGet32StaticFromCode) // (field_idx, referrer, Thread*, SP) 942 addl LITERAL(16), %esp // pop arguments 943 .cfi_adjust_cfa_offset -16 944 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 945 RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception 946END_FUNCTION art_quick_get32_static 947 948DEFINE_FUNCTION art_quick_get64_static 949 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 950 mov %esp, %edx // remember SP 951 mov 32(%esp), %ecx // get referrer 952 PUSH edx // pass SP 953 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 954 .cfi_adjust_cfa_offset 4 955 PUSH ecx // pass referrer 956 PUSH eax // pass field_idx 957 call SYMBOL(artGet64StaticFromCode) // (field_idx, referrer, Thread*, SP) 958 addl LITERAL(16), %esp // pop arguments 959 .cfi_adjust_cfa_offset -16 960 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 961 RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception 962END_FUNCTION art_quick_get64_static 963 964DEFINE_FUNCTION art_quick_get_obj_static 965 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 966 mov %esp, %edx // remember SP 967 mov 32(%esp), %ecx // get referrer 968 PUSH edx // pass SP 969 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 970 .cfi_adjust_cfa_offset 4 971 PUSH ecx // pass referrer 972 PUSH eax // pass field_idx 973 call SYMBOL(artGetObjStaticFromCode) // (field_idx, referrer, Thread*, SP) 974 addl LITERAL(16), %esp // pop arguments 975 .cfi_adjust_cfa_offset -16 976 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 977 RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception 978END_FUNCTION art_quick_get_obj_static 979 980DEFINE_FUNCTION art_quick_proxy_invoke_handler 981 SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME // save frame and Method* 982 PUSH esp // pass SP 983 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 984 .cfi_adjust_cfa_offset 4 985 PUSH ecx // pass receiver 986 PUSH eax // pass proxy method 987 call SYMBOL(artQuickProxyInvokeHandler) // (proxy method, receiver, Thread*, SP) 988 movd %eax, %xmm0 // place return value also into floating point return value 989 movd %edx, %xmm1 990 punpckldq %xmm1, %xmm0 991 addl LITERAL(44), %esp // pop arguments 992 .cfi_adjust_cfa_offset -44 993 RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception 994END_FUNCTION art_quick_proxy_invoke_handler 995 996 /* 997 * Called to resolve an imt conflict. xmm0 is a hidden argument that holds the target method's 998 * dex method index. 999 */ 1000DEFINE_FUNCTION art_quick_imt_conflict_trampoline 1001 PUSH ecx 1002 movl 8(%esp), %eax // load caller Method* 1003 movl METHOD_DEX_CACHE_METHODS_OFFSET(%eax), %eax // load dex_cache_resolved_methods 1004 movd %xmm0, %ecx // get target method index stored in xmm0 1005 movl OBJECT_ARRAY_DATA_OFFSET(%eax, %ecx, 4), %eax // load the target method 1006 POP ecx 1007 jmp art_quick_invoke_interface_trampoline 1008END_FUNCTION art_quick_imt_conflict_trampoline 1009 1010DEFINE_FUNCTION art_quick_resolution_trampoline 1011 SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME 1012 PUSH esp // pass SP 1013 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 1014 .cfi_adjust_cfa_offset 4 1015 PUSH ecx // pass receiver 1016 PUSH eax // pass method 1017 call SYMBOL(artQuickResolutionTrampoline) // (Method* called, receiver, Thread*, SP) 1018 movl %eax, %edi // remember code pointer in EDI 1019 addl LITERAL(16), %esp // pop arguments 1020 test %eax, %eax // if code pointer is NULL goto deliver pending exception 1021 jz 1f 1022 POP eax // called method 1023 POP ecx // restore args 1024 POP edx 1025 POP ebx 1026 POP ebp // restore callee saves except EDI 1027 POP esi 1028 xchgl 0(%esp),%edi // restore EDI and place code pointer as only value on stack 1029 ret // tail call into method 10301: 1031 RESTORE_REF_AND_ARGS_CALLEE_SAVE_FRAME 1032 DELIVER_PENDING_EXCEPTION 1033END_FUNCTION art_quick_resolution_trampoline 1034 1035DEFINE_FUNCTION art_quick_to_interpreter_bridge 1036 SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME // save frame 1037 mov %esp, %edx // remember SP 1038 PUSH eax // alignment padding 1039 PUSH edx // pass SP 1040 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 1041 .cfi_adjust_cfa_offset 4 1042 PUSH eax // pass method 1043 call SYMBOL(artQuickToInterpreterBridge) // (method, Thread*, SP) 1044 movd %eax, %xmm0 // place return value also into floating point return value 1045 movd %edx, %xmm1 1046 punpckldq %xmm1, %xmm0 1047 addl LITERAL(16), %esp // pop arguments 1048 .cfi_adjust_cfa_offset -16 1049 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME 1050 RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception 1051END_FUNCTION art_quick_to_interpreter_bridge 1052 1053 /* 1054 * Routine that intercepts method calls and returns. 1055 */ 1056DEFINE_FUNCTION art_quick_instrumentation_entry 1057 SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME 1058 movl %esp, %edx // Save SP. 1059 PUSH eax // Save eax which will be clobbered by the callee-save method. 1060 subl LITERAL(8), %esp // Align stack. 1061 .cfi_adjust_cfa_offset 8 1062 pushl 40(%esp) // Pass LR. 1063 .cfi_adjust_cfa_offset 4 1064 PUSH edx // Pass SP. 1065 pushl %fs:THREAD_SELF_OFFSET // Pass Thread::Current(). 1066 .cfi_adjust_cfa_offset 4 1067 PUSH ecx // Pass receiver. 1068 PUSH eax // Pass Method*. 1069 call SYMBOL(artInstrumentationMethodEntryFromCode) // (Method*, Object*, Thread*, SP, LR) 1070 addl LITERAL(28), %esp // Pop arguments upto saved Method*. 1071 movl 28(%esp), %edi // Restore edi. 1072 movl %eax, 28(%esp) // Place code* over edi, just under return pc. 1073 movl LITERAL(SYMBOL(art_quick_instrumentation_exit)), 32(%esp) 1074 // Place instrumentation exit as return pc. 1075 movl (%esp), %eax // Restore eax. 1076 movl 8(%esp), %ecx // Restore ecx. 1077 movl 12(%esp), %edx // Restore edx. 1078 movl 16(%esp), %ebx // Restore ebx. 1079 movl 20(%esp), %ebp // Restore ebp. 1080 movl 24(%esp), %esi // Restore esi. 1081 addl LITERAL(28), %esp // Wind stack back upto code*. 1082 ret // Call method (and pop). 1083END_FUNCTION art_quick_instrumentation_entry 1084 1085DEFINE_FUNCTION art_quick_instrumentation_exit 1086 pushl LITERAL(0) // Push a fake return PC as there will be none on the stack. 1087 SETUP_REF_ONLY_CALLEE_SAVE_FRAME 1088 mov %esp, %ecx // Remember SP 1089 subl LITERAL(8), %esp // Save float return value. 1090 .cfi_adjust_cfa_offset 8 1091 movd %xmm0, (%esp) 1092 PUSH edx // Save gpr return value. 1093 PUSH eax 1094 subl LITERAL(8), %esp // Align stack 1095 movd %xmm0, (%esp) 1096 subl LITERAL(8), %esp // Pass float return value. 1097 .cfi_adjust_cfa_offset 8 1098 movd %xmm0, (%esp) 1099 PUSH edx // Pass gpr return value. 1100 PUSH eax 1101 PUSH ecx // Pass SP. 1102 pushl %fs:THREAD_SELF_OFFSET // Pass Thread::Current. 1103 .cfi_adjust_cfa_offset 4 1104 call SYMBOL(artInstrumentationMethodExitFromCode) // (Thread*, SP, gpr_result, fpr_result) 1105 mov %eax, %ecx // Move returned link register. 1106 addl LITERAL(32), %esp // Pop arguments. 1107 .cfi_adjust_cfa_offset -32 1108 movl %edx, %ebx // Move returned link register for deopt 1109 // (ebx is pretending to be our LR). 1110 POP eax // Restore gpr return value. 1111 POP edx 1112 movd (%esp), %xmm0 // Restore fpr return value. 1113 addl LITERAL(8), %esp 1114 .cfi_adjust_cfa_offset -8 1115 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME 1116 addl LITERAL(4), %esp // Remove fake return pc. 1117 jmp *%ecx // Return. 1118END_FUNCTION art_quick_instrumentation_exit 1119 1120 /* 1121 * Instrumentation has requested that we deoptimize into the interpreter. The deoptimization 1122 * will long jump to the upcall with a special exception of -1. 1123 */ 1124DEFINE_FUNCTION art_quick_deoptimize 1125 pushl %ebx // Fake that we were called. 1126 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME 1127 mov %esp, %ecx // Remember SP. 1128 subl LITERAL(8), %esp // Align stack. 1129 .cfi_adjust_cfa_offset 8 1130 PUSH ecx // Pass SP. 1131 pushl %fs:THREAD_SELF_OFFSET // Pass Thread::Current(). 1132 .cfi_adjust_cfa_offset 4 1133 call SYMBOL(artDeoptimize) // artDeoptimize(Thread*, SP) 1134 int3 // Unreachable. 1135END_FUNCTION art_quick_deoptimize 1136 1137 /* 1138 * String's indexOf. 1139 * 1140 * On entry: 1141 * eax: string object (known non-null) 1142 * ecx: char to match (known <= 0xFFFF) 1143 * edx: Starting offset in string data 1144 */ 1145DEFINE_FUNCTION art_quick_indexof 1146 PUSH edi // push callee save reg 1147 mov STRING_COUNT_OFFSET(%eax), %ebx 1148 mov STRING_VALUE_OFFSET(%eax), %edi 1149 mov STRING_OFFSET_OFFSET(%eax), %eax 1150 testl %edx, %edx // check if start < 0 1151 jl clamp_min 1152clamp_done: 1153 cmpl %ebx, %edx // check if start >= count 1154 jge not_found 1155 lea STRING_DATA_OFFSET(%edi, %eax, 2), %edi // build a pointer to the start of string data 1156 mov %edi, %eax // save a copy in eax to later compute result 1157 lea (%edi, %edx, 2), %edi // build pointer to start of data to compare 1158 subl %edx, %ebx // compute iteration count 1159 /* 1160 * At this point we have: 1161 * eax: original start of string data 1162 * ecx: char to compare 1163 * ebx: length to compare 1164 * edi: start of data to test 1165 */ 1166 mov %eax, %edx 1167 mov %ecx, %eax // put char to match in %eax 1168 mov %ebx, %ecx // put length to compare in %ecx 1169 repne scasw // find %ax, starting at [%edi], up to length %ecx 1170 jne not_found 1171 subl %edx, %edi 1172 sar LITERAL(1), %edi 1173 decl %edi // index = ((curr_ptr - orig_ptr) / 2) - 1 1174 mov %edi, %eax 1175 POP edi // pop callee save reg 1176 ret 1177 .balign 16 1178not_found: 1179 mov LITERAL(-1), %eax // return -1 (not found) 1180 POP edi // pop callee save reg 1181 ret 1182clamp_min: 1183 xor %edx, %edx // clamp start to 0 1184 jmp clamp_done 1185END_FUNCTION art_quick_indexof 1186 1187 /* 1188 * String's compareTo. 1189 * 1190 * On entry: 1191 * eax: this string object (known non-null) 1192 * ecx: comp string object (known non-null) 1193 */ 1194DEFINE_FUNCTION art_quick_string_compareto 1195 PUSH esi // push callee save reg 1196 PUSH edi // push callee save reg 1197 mov STRING_COUNT_OFFSET(%eax), %edx 1198 mov STRING_COUNT_OFFSET(%ecx), %ebx 1199 mov STRING_VALUE_OFFSET(%eax), %esi 1200 mov STRING_VALUE_OFFSET(%ecx), %edi 1201 mov STRING_OFFSET_OFFSET(%eax), %eax 1202 mov STRING_OFFSET_OFFSET(%ecx), %ecx 1203 /* Build pointers to the start of string data */ 1204 lea STRING_DATA_OFFSET(%esi, %eax, 2), %esi 1205 lea STRING_DATA_OFFSET(%edi, %ecx, 2), %edi 1206 /* Calculate min length and count diff */ 1207 mov %edx, %ecx 1208 mov %edx, %eax 1209 subl %ebx, %eax 1210 cmovg %ebx, %ecx 1211 /* 1212 * At this point we have: 1213 * eax: value to return if first part of strings are equal 1214 * ecx: minimum among the lengths of the two strings 1215 * esi: pointer to this string data 1216 * edi: pointer to comp string data 1217 */ 1218 repe cmpsw // find nonmatching chars in [%esi] and [%edi], up to length %ecx 1219 jne not_equal 1220 POP edi // pop callee save reg 1221 POP esi // pop callee save reg 1222 ret 1223 .balign 16 1224not_equal: 1225 movzwl -2(%esi), %eax // get last compared char from this string 1226 movzwl -2(%edi), %ecx // get last compared char from comp string 1227 subl %ecx, %eax // return the difference 1228 POP edi // pop callee save reg 1229 POP esi // pop callee save reg 1230 ret 1231END_FUNCTION art_quick_string_compareto 1232 1233 // TODO: implement these! 1234UNIMPLEMENTED art_quick_memcmp16 1235