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 // For x86, the CFA is esp+4, the address above the pushed return address on the stack. 20 21 /* 22 * Macro that sets up the callee save frame to conform with 23 * Runtime::CreateCalleeSaveMethod(kSaveAll) 24 */ 25 MACRO0(SETUP_SAVE_ALL_CALLEE_SAVE_FRAME) 26 PUSH edi // Save callee saves (ebx is saved/restored by the upcall) 27 PUSH esi 28 PUSH ebp 29 subl MACRO_LITERAL(16), %esp // Grow stack by 4 words, bottom word will hold Method* 30 CFI_ADJUST_CFA_OFFSET(16) 31 // Ugly compile-time check, but we only have the preprocessor. 32 // Last +4: implicit return address pushed on stack when caller made call. 33 #if (FRAME_SIZE_SAVE_ALL_CALLEE_SAVE != 3*4 + 16 + 4) 34 #error "SAVE_ALL_CALLEE_SAVE_FRAME(X86) size not as expected." 35 #endif 36 END_MACRO 37 38 /* 39 * Macro that sets up the callee save frame to conform with 40 * Runtime::CreateCalleeSaveMethod(kRefsOnly) 41 */ 42 MACRO0(SETUP_REF_ONLY_CALLEE_SAVE_FRAME) 43 PUSH edi // Save callee saves (ebx is saved/restored by the upcall) 44 PUSH esi 45 PUSH ebp 46 subl MACRO_LITERAL(16), %esp // Grow stack by 4 words, bottom word will hold Method* 47 CFI_ADJUST_CFA_OFFSET(16) 48 49 // Ugly compile-time check, but we only have the preprocessor. 50 // Last +4: implicit return address pushed on stack when caller made call. 51 #if (FRAME_SIZE_REFS_ONLY_CALLEE_SAVE != 3*4 + 16 + 4) 52 #error "REFS_ONLY_CALLEE_SAVE_FRAME(X86) size not as expected." 53 #endif 54 END_MACRO 55 56 MACRO0(RESTORE_REF_ONLY_CALLEE_SAVE_FRAME) 57 addl MACRO_LITERAL(16), %esp // Unwind stack up to saved values 58 CFI_ADJUST_CFA_OFFSET(-16) 59 POP ebp // Restore callee saves (ebx is saved/restored by the upcall) 60 POP esi 61 POP edi 62 END_MACRO 63 64 /* 65 * Macro that sets up the callee save frame to conform with 66 * Runtime::CreateCalleeSaveMethod(kRefsAndArgs) 67 */ 68 MACRO0(SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME) 69 PUSH edi // Save callee saves 70 PUSH esi 71 PUSH ebp 72 PUSH ebx // Save args 73 PUSH edx 74 PUSH ecx 75 PUSH eax // Align stack, eax will be clobbered by Method* 76 77 // Ugly compile-time check, but we only have the preprocessor. 78 // Last +4: implicit return address pushed on stack when caller made call. 79 #if (FRAME_SIZE_REFS_AND_ARGS_CALLEE_SAVE != 7*4 + 4) 80 #error "REFS_AND_ARGS_CALLEE_SAVE_FRAME(X86) size not as expected." 81 #endif 82 END_MACRO 83 84 MACRO0(RESTORE_REF_AND_ARGS_CALLEE_SAVE_FRAME) 85 addl MACRO_LITERAL(4), %esp // Remove padding 86 CFI_ADJUST_CFA_OFFSET(-4) 87 POP ecx // Restore args except eax 88 POP edx 89 POP ebx 90 POP ebp // Restore callee saves 91 POP esi 92 POP edi 93 END_MACRO 94 95 /* 96 * Macro that set calls through to artDeliverPendingExceptionFromCode, where the pending 97 * exception is Thread::Current()->exception_. 98 */ 99 MACRO0(DELIVER_PENDING_EXCEPTION) 100 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save callee saves for throw 101 mov %esp, %ecx 102 // Outgoing argument set up 103 subl MACRO_LITERAL(8), %esp // Alignment padding 104 CFI_ADJUST_CFA_OFFSET(8) 105 PUSH ecx // pass SP 106 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 107 CFI_ADJUST_CFA_OFFSET(4) 108 SETUP_GOT_NOSAVE // clobbers ebx (harmless here) 109 call SYMBOL(artDeliverPendingExceptionFromCode) // artDeliverPendingExceptionFromCode(Thread*, SP) 110 int3 // unreached 111 END_MACRO 112 113 MACRO2(NO_ARG_RUNTIME_EXCEPTION, c_name, cxx_name) 114 DEFINE_FUNCTION RAW_VAR(c_name, 0) 115 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save all registers as basis for long jump context 116 mov %esp, %ecx 117 // Outgoing argument set up 118 subl MACRO_LITERAL(8), %esp // alignment padding 119 CFI_ADJUST_CFA_OFFSET(8) 120 PUSH ecx // pass SP 121 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 122 CFI_ADJUST_CFA_OFFSET(4) 123 SETUP_GOT_NOSAVE // clobbers ebx (harmless here) 124 call VAR(cxx_name, 1) // cxx_name(Thread*, SP) 125 int3 // unreached 126 END_FUNCTION RAW_VAR(c_name, 0) 127 END_MACRO 128 129 MACRO2(ONE_ARG_RUNTIME_EXCEPTION, c_name, cxx_name) 130 DEFINE_FUNCTION RAW_VAR(c_name, 0) 131 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save all registers as basis for long jump context 132 mov %esp, %ecx 133 // Outgoing argument set up 134 PUSH eax // alignment padding 135 PUSH ecx // pass SP 136 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 137 CFI_ADJUST_CFA_OFFSET(4) 138 PUSH eax // pass arg1 139 SETUP_GOT_NOSAVE // clobbers ebx (harmless here) 140 call VAR(cxx_name, 1) // cxx_name(arg1, Thread*, SP) 141 int3 // unreached 142 END_FUNCTION RAW_VAR(c_name, 0) 143 END_MACRO 144 145 MACRO2(TWO_ARG_RUNTIME_EXCEPTION, c_name, cxx_name) 146 DEFINE_FUNCTION RAW_VAR(c_name, 0) 147 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save all registers as basis for long jump context 148 mov %esp, %edx 149 // Outgoing argument set up 150 PUSH edx // pass SP 151 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 152 CFI_ADJUST_CFA_OFFSET(4) 153 PUSH ecx // pass arg2 154 PUSH eax // pass arg1 155 SETUP_GOT_NOSAVE // clobbers ebx (harmless here) 156 call VAR(cxx_name, 1) // cxx_name(arg1, arg2, Thread*, SP) 157 int3 // unreached 158 END_FUNCTION RAW_VAR(c_name, 0) 159 END_MACRO 160 161 /* 162 * Called by managed code to create and deliver a NullPointerException. 163 */ 164 NO_ARG_RUNTIME_EXCEPTION art_quick_throw_null_pointer_exception, artThrowNullPointerExceptionFromCode 165 166 /* 167 * Called by managed code to create and deliver an ArithmeticException. 168 */ 169 NO_ARG_RUNTIME_EXCEPTION art_quick_throw_div_zero, artThrowDivZeroFromCode 170 171 /* 172 * Called by managed code to create and deliver a StackOverflowError. 173 */ 174 NO_ARG_RUNTIME_EXCEPTION art_quick_throw_stack_overflow, artThrowStackOverflowFromCode 175 176 /* 177 * Called by managed code, saves callee saves and then calls artThrowException 178 * that will place a mock Method* at the bottom of the stack. Arg1 holds the exception. 179 */ 180 ONE_ARG_RUNTIME_EXCEPTION art_quick_deliver_exception, artDeliverExceptionFromCode 181 182 /* 183 * Called by managed code to create and deliver a NoSuchMethodError. 184 */ 185 ONE_ARG_RUNTIME_EXCEPTION art_quick_throw_no_such_method, artThrowNoSuchMethodFromCode 186 187 /* 188 * Called by managed code to create and deliver an ArrayIndexOutOfBoundsException. Arg1 holds 189 * index, arg2 holds limit. 190 */ 191 TWO_ARG_RUNTIME_EXCEPTION art_quick_throw_array_bounds, artThrowArrayBoundsFromCode 192 193 /* 194 * All generated callsites for interface invokes and invocation slow paths will load arguments 195 * as usual - except instead of loading arg0/r0 with the target Method*, arg0/r0 will contain 196 * the method_idx. This wrapper will save arg1-arg3, load the caller's Method*, align the 197 * stack and call the appropriate C helper. 198 * NOTE: "this" is first visible argument of the target, and so can be found in arg1/r1. 199 * 200 * The helper will attempt to locate the target and return a 64-bit result in r0/r1 consisting 201 * of the target Method* in r0 and method->code_ in r1. 202 * 203 * If unsuccessful, the helper will return NULL/NULL. There will bea pending exception in the 204 * thread and we branch to another stub to deliver it. 205 * 206 * On success this wrapper will restore arguments and *jump* to the target, leaving the lr 207 * pointing back to the original caller. 208 */ 209 MACRO2(INVOKE_TRAMPOLINE, c_name, cxx_name) 210 DEFINE_FUNCTION RAW_VAR(c_name, 0) 211 // Set up the callee save frame to conform with Runtime::CreateCalleeSaveMethod(kRefsAndArgs) 212 // return address 213 PUSH edi 214 PUSH esi 215 PUSH ebp 216 PUSH ebx // Save args 217 PUSH edx 218 PUSH ecx 219 PUSH eax // <-- callee save Method* to go here 220 movl %esp, %edx // remember SP 221 // Outgoing argument set up 222 SETUP_GOT_NOSAVE 223 subl MACRO_LITERAL(12), %esp // alignment padding 224 CFI_ADJUST_CFA_OFFSET(12) 225 PUSH edx // pass SP 226 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 227 CFI_ADJUST_CFA_OFFSET(4) 228 pushl 32(%edx) // pass caller Method* 229 CFI_ADJUST_CFA_OFFSET(4) 230 PUSH ecx // pass arg2 231 PUSH eax // pass arg1 232 call VAR(cxx_name, 1) // cxx_name(arg1, arg2, arg3, Thread*, SP) 233 movl %edx, %edi // save code pointer in EDI 234 addl MACRO_LITERAL(36), %esp // Pop arguments skip eax 235 CFI_ADJUST_CFA_OFFSET(-36) 236 POP ecx // Restore args except eax 237 POP edx 238 POP ebx 239 POP ebp // Restore callee saves 240 POP esi 241 // Swap EDI callee save with code pointer. 242 xchgl %edi, (%esp) 243 testl %eax, %eax // Branch forward if exception pending. 244 jz 1f 245 // Tail call to intended method. 246 ret 247 1: 248 addl MACRO_LITERAL(4), %esp // Pop code pointer off stack 249 CFI_ADJUST_CFA_OFFSET(-4) 250 DELIVER_PENDING_EXCEPTION 251 END_FUNCTION RAW_VAR(c_name, 0) 252 END_MACRO 253 254 INVOKE_TRAMPOLINE art_quick_invoke_interface_trampoline, artInvokeInterfaceTrampoline 255 INVOKE_TRAMPOLINE art_quick_invoke_interface_trampoline_with_access_check, artInvokeInterfaceTrampolineWithAccessCheck 256 257 INVOKE_TRAMPOLINE art_quick_invoke_static_trampoline_with_access_check, artInvokeStaticTrampolineWithAccessCheck 258 INVOKE_TRAMPOLINE art_quick_invoke_direct_trampoline_with_access_check, artInvokeDirectTrampolineWithAccessCheck 259 INVOKE_TRAMPOLINE art_quick_invoke_super_trampoline_with_access_check, artInvokeSuperTrampolineWithAccessCheck 260 INVOKE_TRAMPOLINE art_quick_invoke_virtual_trampoline_with_access_check, artInvokeVirtualTrampolineWithAccessCheck 261 262 /* 263 * Quick invocation stub. 264 * On entry: 265 * [sp] = return address 266 * [sp + 4] = method pointer 267 * [sp + 8] = argument array or NULL for no argument methods 268 * [sp + 12] = size of argument array in bytes 269 * [sp + 16] = (managed) thread pointer 270 * [sp + 20] = JValue* result 271 * [sp + 24] = shorty 272 */ 273 DEFINE_FUNCTION art_quick_invoke_stub 274 PUSH ebp // save ebp 275 PUSH ebx // save ebx 276 mov %esp, %ebp // copy value of stack pointer into base pointer 277 CFI_DEF_CFA_REGISTER(ebp) 278 mov 20(%ebp), %ebx // get arg array size 279 addl LITERAL(28), %ebx // reserve space for return addr, method*, ebx, and ebp in frame 280 andl LITERAL(0xFFFFFFF0), %ebx // align frame size to 16 bytes 281 subl LITERAL(12), %ebx // remove space for return address, ebx, and ebp 282 subl %ebx, %esp // reserve stack space for argument array 283 SETUP_GOT_NOSAVE // clobbers ebx (harmless here) 284 lea 4(%esp), %eax // use stack pointer + method ptr as dest for memcpy 285 pushl 20(%ebp) // push size of region to memcpy 286 pushl 16(%ebp) // push arg array as source of memcpy 287 pushl %eax // push stack pointer as destination of memcpy 288 call PLT_SYMBOL(memcpy) // (void*, const void*, size_t) 289 addl LITERAL(12), %esp // pop arguments to memcpy 290 movl LITERAL(0), (%esp) // store NULL for method* 291 mov 12(%ebp), %eax // move method pointer into eax 292 mov 4(%esp), %ecx // copy arg1 into ecx 293 mov 8(%esp), %edx // copy arg2 into edx 294 mov 12(%esp), %ebx // copy arg3 into ebx 295 call *METHOD_QUICK_CODE_OFFSET_32(%eax) // call the method 296 mov %ebp, %esp // restore stack pointer 297 CFI_DEF_CFA_REGISTER(esp) 298 POP ebx // pop ebx 299 POP ebp // pop ebp 300 mov 20(%esp), %ecx // get result pointer 301 mov %eax, (%ecx) // store the result assuming its a long, int or Object* 302 mov %edx, 4(%ecx) // store the other half of the result 303 mov 24(%esp), %edx // get the shorty 304 cmpb LITERAL(68), (%edx) // test if result type char == 'D' 305 je .Lreturn_double_quick 306 cmpb LITERAL(70), (%edx) // test if result type char == 'F' 307 je .Lreturn_float_quick 308 ret 309 .Lreturn_double_quick: 310 movsd %xmm0, (%ecx) // store the floating point result 311 ret 312 .Lreturn_float_quick: 313 movss %xmm0, (%ecx) // store the floating point result 314 ret 315 END_FUNCTION art_quick_invoke_stub 316 317 MACRO3(NO_ARG_DOWNCALL, c_name, cxx_name, return_macro) 318 DEFINE_FUNCTION RAW_VAR(c_name, 0) 319 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 320 mov %esp, %edx // remember SP 321 SETUP_GOT_NOSAVE // clobbers ebx (harmless here) 322 // Outgoing argument set up 323 subl MACRO_LITERAL(8), %esp // push padding 324 CFI_ADJUST_CFA_OFFSET(8) 325 PUSH edx // pass SP 326 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 327 CFI_ADJUST_CFA_OFFSET(4) 328 call VAR(cxx_name, 1) // cxx_name(Thread*, SP) 329 addl MACRO_LITERAL(16), %esp // pop arguments 330 CFI_ADJUST_CFA_OFFSET(-16) 331 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 332 CALL_MACRO(return_macro, 2) // return or deliver exception 333 END_FUNCTION RAW_VAR(c_name, 0) 334 END_MACRO 335 336 MACRO3(ONE_ARG_DOWNCALL, c_name, cxx_name, return_macro) 337 DEFINE_FUNCTION RAW_VAR(c_name, 0) 338 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 339 mov %esp, %edx // remember SP 340 SETUP_GOT_NOSAVE // clobbers EBX 341 // Outgoing argument set up 342 PUSH eax // push padding 343 PUSH edx // pass SP 344 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 345 CFI_ADJUST_CFA_OFFSET(4) 346 PUSH eax // pass arg1 347 call VAR(cxx_name, 1) // cxx_name(arg1, Thread*, SP) 348 addl MACRO_LITERAL(16), %esp // pop arguments 349 CFI_ADJUST_CFA_OFFSET(-16) 350 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 351 CALL_MACRO(return_macro, 2) // return or deliver exception 352 END_FUNCTION RAW_VAR(c_name, 0) 353 END_MACRO 354 355 MACRO3(TWO_ARG_DOWNCALL, c_name, cxx_name, return_macro) 356 DEFINE_FUNCTION RAW_VAR(c_name, 0) 357 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 358 mov %esp, %edx // remember SP 359 SETUP_GOT_NOSAVE // clobbers EBX 360 // Outgoing argument set up 361 PUSH edx // pass SP 362 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 363 CFI_ADJUST_CFA_OFFSET(4) 364 PUSH ecx // pass arg2 365 PUSH eax // pass arg1 366 call VAR(cxx_name, 1) // cxx_name(arg1, arg2, Thread*, SP) 367 addl MACRO_LITERAL(16), %esp // pop arguments 368 CFI_ADJUST_CFA_OFFSET(-16) 369 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 370 CALL_MACRO(return_macro, 2) // return or deliver exception 371 END_FUNCTION RAW_VAR(c_name, 0) 372 END_MACRO 373 374 MACRO3(THREE_ARG_DOWNCALL, c_name, cxx_name, return_macro) 375 DEFINE_FUNCTION RAW_VAR(c_name, 0) 376 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 377 mov %esp, %ebx // remember SP 378 // Outgoing argument set up 379 subl MACRO_LITERAL(12), %esp // alignment padding 380 CFI_ADJUST_CFA_OFFSET(12) 381 PUSH ebx // pass SP 382 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 383 CFI_ADJUST_CFA_OFFSET(4) 384 PUSH edx // pass arg3 385 PUSH ecx // pass arg2 386 PUSH eax // pass arg1 387 SETUP_GOT_NOSAVE // clobbers EBX 388 call VAR(cxx_name, 1) // cxx_name(arg1, arg2, arg3, Thread*, SP) 389 addl MACRO_LITERAL(32), %esp // pop arguments 390 CFI_ADJUST_CFA_OFFSET(-32) 391 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 392 CALL_MACRO(return_macro, 2) // return or deliver exception 393 END_FUNCTION RAW_VAR(c_name, 0) 394 END_MACRO 395 396 MACRO0(RETURN_IF_RESULT_IS_NON_ZERO) 397 testl %eax, %eax // eax == 0 ? 398 jz 1f // if eax == 0 goto 1 399 ret // return 400 1: // deliver exception on current thread 401 DELIVER_PENDING_EXCEPTION 402 END_MACRO 403 404 MACRO0(RETURN_IF_EAX_ZERO) 405 testl %eax, %eax // eax == 0 ? 406 jnz 1f // if eax != 0 goto 1 407 ret // return 408 1: // deliver exception on current thread 409 DELIVER_PENDING_EXCEPTION 410 END_MACRO 411 412 MACRO0(RETURN_OR_DELIVER_PENDING_EXCEPTION) 413 mov %fs:THREAD_EXCEPTION_OFFSET, %ebx // get exception field 414 testl %ebx, %ebx // ebx == 0 ? 415 jnz 1f // if ebx != 0 goto 1 416 ret // return 417 1: // deliver exception on current thread 418 DELIVER_PENDING_EXCEPTION 419 END_MACRO 420 421 // Generate the allocation entrypoints for each allocator. 422 // TODO: use arch/quick_alloc_entrypoints.S. Currently we don't as we need to use concatenation 423 // macros to work around differences between OS/X's as and binutils as (OS/X lacks named arguments 424 // to macros and the VAR macro won't concatenate arguments properly), this also breaks having 425 // multi-line macros that use each other (hence using 1 macro per newline below). 426 #define GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(c_suffix, cxx_suffix) \ 427 TWO_ARG_DOWNCALL art_quick_alloc_object ## c_suffix, artAllocObjectFromCode ## cxx_suffix, RETURN_IF_RESULT_IS_NON_ZERO 428 #define GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(c_suffix, cxx_suffix) \ 429 TWO_ARG_DOWNCALL art_quick_alloc_object_resolved ## c_suffix, artAllocObjectFromCodeResolved ## cxx_suffix, RETURN_IF_RESULT_IS_NON_ZERO 430 #define GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(c_suffix, cxx_suffix) \ 431 TWO_ARG_DOWNCALL art_quick_alloc_object_initialized ## c_suffix, artAllocObjectFromCodeInitialized ## cxx_suffix, RETURN_IF_RESULT_IS_NON_ZERO 432 #define GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_WITH_ACCESS_CHECK(c_suffix, cxx_suffix) \ 433 TWO_ARG_DOWNCALL art_quick_alloc_object_with_access_check ## c_suffix, artAllocObjectFromCodeWithAccessCheck ## cxx_suffix, RETURN_IF_RESULT_IS_NON_ZERO 434 #define GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY(c_suffix, cxx_suffix) \ 435 THREE_ARG_DOWNCALL art_quick_alloc_array ## c_suffix, artAllocArrayFromCode ## cxx_suffix, RETURN_IF_RESULT_IS_NON_ZERO 436 #define GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_RESOLVED(c_suffix, cxx_suffix) \ 437 THREE_ARG_DOWNCALL art_quick_alloc_array_resolved ## c_suffix, artAllocArrayFromCodeResolved ## cxx_suffix, RETURN_IF_RESULT_IS_NON_ZERO 438 #define GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_WITH_ACCESS_CHECK(c_suffix, cxx_suffix) \ 439 THREE_ARG_DOWNCALL art_quick_alloc_array_with_access_check ## c_suffix, artAllocArrayFromCodeWithAccessCheck ## cxx_suffix, RETURN_IF_RESULT_IS_NON_ZERO 440 #define GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY(c_suffix, cxx_suffix) \ 441 THREE_ARG_DOWNCALL art_quick_check_and_alloc_array ## c_suffix, artCheckAndAllocArrayFromCode ## cxx_suffix, RETURN_IF_RESULT_IS_NON_ZERO 442 #define GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY_WITH_ACCESS_CHECK(c_suffix, cxx_suffix) \ 443 THREE_ARG_DOWNCALL art_quick_check_and_alloc_array_with_access_check ## c_suffix, artCheckAndAllocArrayFromCodeWithAccessCheck ## cxx_suffix, RETURN_IF_RESULT_IS_NON_ZERO 444 445 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_dlmalloc, DlMalloc) 446 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(_dlmalloc, DlMalloc) 447 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(_dlmalloc, DlMalloc) 448 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_WITH_ACCESS_CHECK(_dlmalloc, DlMalloc) 449 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY(_dlmalloc, DlMalloc) 450 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_RESOLVED(_dlmalloc, DlMalloc) 451 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_WITH_ACCESS_CHECK(_dlmalloc, DlMalloc) 452 GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY(_dlmalloc, DlMalloc) 453 GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY_WITH_ACCESS_CHECK(_dlmalloc, DlMalloc) 454 455 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_dlmalloc_instrumented, DlMallocInstrumented) 456 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(_dlmalloc_instrumented, DlMallocInstrumented) 457 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(_dlmalloc_instrumented, DlMallocInstrumented) 458 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_WITH_ACCESS_CHECK(_dlmalloc_instrumented, DlMallocInstrumented) 459 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY(_dlmalloc_instrumented, DlMallocInstrumented) 460 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_RESOLVED(_dlmalloc_instrumented, DlMallocInstrumented) 461 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_WITH_ACCESS_CHECK(_dlmalloc_instrumented, DlMallocInstrumented) 462 GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY(_dlmalloc_instrumented, DlMallocInstrumented) 463 GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY_WITH_ACCESS_CHECK(_dlmalloc_instrumented, DlMallocInstrumented) 464 465 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_rosalloc, RosAlloc) 466 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(_rosalloc, RosAlloc) 467 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(_rosalloc, RosAlloc) 468 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_WITH_ACCESS_CHECK(_rosalloc, RosAlloc) 469 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY(_rosalloc, RosAlloc) 470 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_RESOLVED(_rosalloc, RosAlloc) 471 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_WITH_ACCESS_CHECK(_rosalloc, RosAlloc) 472 GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY(_rosalloc, RosAlloc) 473 GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY_WITH_ACCESS_CHECK(_rosalloc, RosAlloc) 474 475 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_rosalloc_instrumented, RosAllocInstrumented) 476 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(_rosalloc_instrumented, RosAllocInstrumented) 477 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(_rosalloc_instrumented, RosAllocInstrumented) 478 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_WITH_ACCESS_CHECK(_rosalloc_instrumented, RosAllocInstrumented) 479 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY(_rosalloc_instrumented, RosAllocInstrumented) 480 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_RESOLVED(_rosalloc_instrumented, RosAllocInstrumented) 481 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_WITH_ACCESS_CHECK(_rosalloc_instrumented, RosAllocInstrumented) 482 GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY(_rosalloc_instrumented, RosAllocInstrumented) 483 GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY_WITH_ACCESS_CHECK(_rosalloc_instrumented, RosAllocInstrumented) 484 485 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_bump_pointer, BumpPointer) 486 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(_bump_pointer, BumpPointer) 487 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(_bump_pointer, BumpPointer) 488 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_WITH_ACCESS_CHECK(_bump_pointer, BumpPointer) 489 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY(_bump_pointer, BumpPointer) 490 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_RESOLVED(_bump_pointer, BumpPointer) 491 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_WITH_ACCESS_CHECK(_bump_pointer, BumpPointer) 492 GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY(_bump_pointer, BumpPointer) 493 GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY_WITH_ACCESS_CHECK(_bump_pointer, BumpPointer) 494 495 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_bump_pointer_instrumented, BumpPointerInstrumented) 496 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(_bump_pointer_instrumented, BumpPointerInstrumented) 497 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(_bump_pointer_instrumented, BumpPointerInstrumented) 498 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_WITH_ACCESS_CHECK(_bump_pointer_instrumented, BumpPointerInstrumented) 499 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY(_bump_pointer_instrumented, BumpPointerInstrumented) 500 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_RESOLVED(_bump_pointer_instrumented, BumpPointerInstrumented) 501 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_WITH_ACCESS_CHECK(_bump_pointer_instrumented, BumpPointerInstrumented) 502 GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY(_bump_pointer_instrumented, BumpPointerInstrumented) 503 GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY_WITH_ACCESS_CHECK(_bump_pointer_instrumented, BumpPointerInstrumented) 504 505 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_tlab, TLAB) 506 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(_tlab, TLAB) 507 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(_tlab, TLAB) 508 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_WITH_ACCESS_CHECK(_tlab, TLAB) 509 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY(_tlab, TLAB) 510 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_RESOLVED(_tlab, TLAB) 511 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_WITH_ACCESS_CHECK(_tlab, TLAB) 512 GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY(_tlab, TLAB) 513 GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY_WITH_ACCESS_CHECK(_tlab, TLAB) 514 515 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_tlab_instrumented, TLABInstrumented) 516 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(_tlab_instrumented, TLABInstrumented) 517 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(_tlab_instrumented, TLABInstrumented) 518 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_WITH_ACCESS_CHECK(_tlab_instrumented, TLABInstrumented) 519 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY(_tlab_instrumented, TLABInstrumented) 520 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_RESOLVED(_tlab_instrumented, TLABInstrumented) 521 GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_WITH_ACCESS_CHECK(_tlab_instrumented, TLABInstrumented) 522 GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY(_tlab_instrumented, TLABInstrumented) 523 GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY_WITH_ACCESS_CHECK(_tlab_instrumented, TLABInstrumented) 524 525 TWO_ARG_DOWNCALL art_quick_resolve_string, artResolveStringFromCode, RETURN_IF_RESULT_IS_NON_ZERO 526 TWO_ARG_DOWNCALL art_quick_initialize_static_storage, artInitializeStaticStorageFromCode, RETURN_IF_RESULT_IS_NON_ZERO 527 TWO_ARG_DOWNCALL art_quick_initialize_type, artInitializeTypeFromCode, RETURN_IF_RESULT_IS_NON_ZERO 528 TWO_ARG_DOWNCALL art_quick_initialize_type_and_verify_access, artInitializeTypeAndVerifyAccessFromCode, RETURN_IF_RESULT_IS_NON_ZERO 529 530 TWO_ARG_DOWNCALL art_quick_handle_fill_data, artHandleFillArrayDataFromCode, RETURN_IF_EAX_ZERO 531 532 DEFINE_FUNCTION art_quick_lock_object 533 testl %eax, %eax // null check object/eax 534 jz .Lslow_lock 535 .Lretry_lock: 536 movl LOCK_WORD_OFFSET(%eax), %ecx // ecx := lock word 537 test LITERAL(0xC0000000), %ecx // test the 2 high bits. 538 jne .Lslow_lock // slow path if either of the two high bits are set. 539 movl %fs:THREAD_ID_OFFSET, %edx // edx := thread id 540 test %ecx, %ecx 541 jnz .Lalready_thin // lock word contains a thin lock 542 // unlocked case - %edx holds thread id with count of 0 543 movl %eax, %ecx // remember object in case of retry 544 xor %eax, %eax // eax == 0 for comparison with lock word in cmpxchg 545 lock cmpxchg %edx, LOCK_WORD_OFFSET(%ecx) 546 jnz .Lcmpxchg_fail // cmpxchg failed retry 547 ret 548 .Lcmpxchg_fail: 549 movl %ecx, %eax // restore eax 550 jmp .Lretry_lock 551 .Lalready_thin: 552 cmpw %cx, %dx // do we hold the lock already? 553 jne .Lslow_lock 554 addl LITERAL(65536), %ecx // increment recursion count 555 test LITERAL(0xC0000000), %ecx // overflowed if either of top two bits are set 556 jne .Lslow_lock // count overflowed so go slow 557 movl %ecx, LOCK_WORD_OFFSET(%eax) // update lockword, cmpxchg not necessary as we hold lock 558 ret 559 .Lslow_lock: 560 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 561 mov %esp, %edx // remember SP 562 SETUP_GOT_NOSAVE // clobbers EBX 563 // Outgoing argument set up 564 PUSH eax // push padding 565 PUSH edx // pass SP 566 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 567 CFI_ADJUST_CFA_OFFSET(4) 568 PUSH eax // pass object 569 call SYMBOL(artLockObjectFromCode) // artLockObjectFromCode(object, Thread*, SP) 570 addl LITERAL(16), %esp // pop arguments 571 CFI_ADJUST_CFA_OFFSET(-16) 572 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 573 RETURN_IF_EAX_ZERO 574 END_FUNCTION art_quick_lock_object 575 576 DEFINE_FUNCTION art_quick_unlock_object 577 testl %eax, %eax // null check object/eax 578 jz .Lslow_unlock 579 movl LOCK_WORD_OFFSET(%eax), %ecx // ecx := lock word 580 movl %fs:THREAD_ID_OFFSET, %edx // edx := thread id 581 test LITERAL(0xC0000000), %ecx 582 jnz .Lslow_unlock // lock word contains a monitor 583 cmpw %cx, %dx // does the thread id match? 584 jne .Lslow_unlock 585 cmpl LITERAL(65536), %ecx 586 jae .Lrecursive_thin_unlock 587 movl LITERAL(0), LOCK_WORD_OFFSET(%eax) 588 ret 589 .Lrecursive_thin_unlock: 590 subl LITERAL(65536), %ecx 591 mov %ecx, LOCK_WORD_OFFSET(%eax) 592 ret 593 .Lslow_unlock: 594 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 595 mov %esp, %edx // remember SP 596 SETUP_GOT_NOSAVE // clobbers EBX 597 // Outgoing argument set up 598 PUSH eax // push padding 599 PUSH edx // pass SP 600 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 601 CFI_ADJUST_CFA_OFFSET(4) 602 PUSH eax // pass object 603 call SYMBOL(artUnlockObjectFromCode) // artUnlockObjectFromCode(object, Thread*, SP) 604 addl LITERAL(16), %esp // pop arguments 605 CFI_ADJUST_CFA_OFFSET(-16) 606 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 607 RETURN_IF_EAX_ZERO 608 END_FUNCTION art_quick_unlock_object 609 610 DEFINE_FUNCTION art_quick_is_assignable 611 SETUP_GOT_NOSAVE // clobbers EBX 612 PUSH eax // alignment padding 613 PUSH ecx // pass arg2 - obj->klass 614 PUSH eax // pass arg1 - checked class 615 call SYMBOL(artIsAssignableFromCode) // (Class* klass, Class* ref_klass) 616 addl LITERAL(12), %esp // pop arguments 617 CFI_ADJUST_CFA_OFFSET(-12) 618 ret 619 END_FUNCTION art_quick_is_assignable 620 621 DEFINE_FUNCTION art_quick_check_cast 622 SETUP_GOT_NOSAVE // clobbers EBX 623 PUSH eax // alignment padding 624 PUSH ecx // pass arg2 - obj->klass 625 PUSH eax // pass arg1 - checked class 626 call SYMBOL(artIsAssignableFromCode) // (Class* klass, Class* ref_klass) 627 testl %eax, %eax 628 jz 1f // jump forward if not assignable 629 addl LITERAL(12), %esp // pop arguments 630 CFI_ADJUST_CFA_OFFSET(-12) 631 ret 632 1: 633 POP eax // pop arguments 634 POP ecx 635 addl LITERAL(4), %esp 636 CFI_ADJUST_CFA_OFFSET(-12) 637 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save all registers as basis for long jump context 638 mov %esp, %edx 639 // Outgoing argument set up 640 PUSH edx // pass SP 641 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 642 CFI_ADJUST_CFA_OFFSET(4) 643 PUSH ecx // pass arg2 644 PUSH eax // pass arg1 645 call SYMBOL(artThrowClassCastException) // (Class* a, Class* b, Thread*, SP) 646 int3 // unreached 647 END_FUNCTION art_quick_check_cast 648 649 /* 650 * Entry from managed code for array put operations of objects where the value being stored 651 * needs to be checked for compatibility. 652 * eax = array, ecx = index, edx = value 653 */ 654 DEFINE_FUNCTION art_quick_aput_obj_with_null_and_bound_check 655 testl %eax, %eax 656 jnz SYMBOL(art_quick_aput_obj_with_bound_check) 657 jmp SYMBOL(art_quick_throw_null_pointer_exception) 658 END_FUNCTION art_quick_aput_obj_with_null_and_bound_check 659 660 DEFINE_FUNCTION art_quick_aput_obj_with_bound_check 661 movl ARRAY_LENGTH_OFFSET(%eax), %ebx 662 cmpl %ebx, %ecx 663 jb SYMBOL(art_quick_aput_obj) 664 mov %ecx, %eax 665 mov %ebx, %ecx 666 jmp SYMBOL(art_quick_throw_array_bounds) 667 END_FUNCTION art_quick_aput_obj_with_bound_check 668 669 DEFINE_FUNCTION art_quick_aput_obj 670 test %edx, %edx // store of null 671 jz .Ldo_aput_null 672 movl CLASS_OFFSET(%eax), %ebx 673 movl CLASS_COMPONENT_TYPE_OFFSET(%ebx), %ebx 674 cmpl CLASS_OFFSET(%edx), %ebx // value's type == array's component type - trivial assignability 675 jne .Lcheck_assignability 676 .Ldo_aput: 677 movl %edx, OBJECT_ARRAY_DATA_OFFSET(%eax, %ecx, 4) 678 movl %fs:THREAD_CARD_TABLE_OFFSET, %edx 679 shrl LITERAL(7), %eax 680 movb %dl, (%edx, %eax) 681 ret 682 .Ldo_aput_null: 683 movl %edx, OBJECT_ARRAY_DATA_OFFSET(%eax, %ecx, 4) 684 ret 685 .Lcheck_assignability: 686 PUSH eax // save arguments 687 PUSH ecx 688 PUSH edx 689 subl LITERAL(8), %esp // alignment padding 690 CFI_ADJUST_CFA_OFFSET(8) 691 pushl CLASS_OFFSET(%edx) // pass arg2 - type of the value to be stored 692 CFI_ADJUST_CFA_OFFSET(4) 693 PUSH ebx // pass arg1 - component type of the array 694 SETUP_GOT_NOSAVE // clobbers EBX 695 call SYMBOL(artIsAssignableFromCode) // (Class* a, Class* b) 696 addl LITERAL(16), %esp // pop arguments 697 CFI_ADJUST_CFA_OFFSET(-16) 698 testl %eax, %eax 699 jz .Lthrow_array_store_exception 700 POP edx 701 POP ecx 702 POP eax 703 movl %edx, OBJECT_ARRAY_DATA_OFFSET(%eax, %ecx, 4) // do the aput 704 movl %fs:THREAD_CARD_TABLE_OFFSET, %edx 705 shrl LITERAL(7), %eax 706 movb %dl, (%edx, %eax) 707 ret 708 .Lthrow_array_store_exception: 709 POP edx 710 POP ecx 711 POP eax 712 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save all registers as basis for long jump context 713 mov %esp, %ecx 714 // Outgoing argument set up 715 PUSH ecx // pass SP 716 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 717 CFI_ADJUST_CFA_OFFSET(4) 718 PUSH edx // pass arg2 - value 719 PUSH eax // pass arg1 - array 720 call SYMBOL(artThrowArrayStoreException) // (array, value, Thread*, SP) 721 int3 // unreached 722 END_FUNCTION art_quick_aput_obj 723 724 DEFINE_FUNCTION art_quick_memcpy 725 SETUP_GOT_NOSAVE // clobbers EBX 726 PUSH edx // pass arg3 727 PUSH ecx // pass arg2 728 PUSH eax // pass arg1 729 call PLT_SYMBOL(memcpy) // (void*, const void*, size_t) 730 addl LITERAL(12), %esp // pop arguments 731 CFI_ADJUST_CFA_OFFSET(-12) 732 ret 733 END_FUNCTION art_quick_memcpy 734 735 NO_ARG_DOWNCALL art_quick_test_suspend, artTestSuspendFromCode, ret 736 737 DEFINE_FUNCTION art_quick_d2l 738 PUSH eax // alignment padding 739 PUSH ecx // pass arg2 a.hi 740 PUSH eax // pass arg1 a.lo 741 SETUP_GOT_NOSAVE // clobbers EBX 742 call SYMBOL(art_d2l) // (jdouble a) 743 addl LITERAL(12), %esp // pop arguments 744 CFI_ADJUST_CFA_OFFSET(-12) 745 ret 746 END_FUNCTION art_quick_d2l 747 748 DEFINE_FUNCTION art_quick_f2l 749 subl LITERAL(8), %esp // alignment padding 750 CFI_ADJUST_CFA_OFFSET(8) 751 SETUP_GOT_NOSAVE // clobbers EBX 752 PUSH eax // pass arg1 a 753 call SYMBOL(art_f2l) // (jfloat a) 754 addl LITERAL(12), %esp // pop arguments 755 CFI_ADJUST_CFA_OFFSET(-12) 756 ret 757 END_FUNCTION art_quick_f2l 758 759 DEFINE_FUNCTION art_quick_ldiv 760 subl LITERAL(12), %esp // alignment padding 761 CFI_ADJUST_CFA_OFFSET(12) 762 PUSH ebx // pass arg4 b.hi 763 PUSH edx // pass arg3 b.lo 764 PUSH ecx // pass arg2 a.hi 765 PUSH eax // pass arg1 a.lo 766 SETUP_GOT_NOSAVE // clobbers EBX 767 call SYMBOL(artLdiv) // (jlong a, jlong b) 768 addl LITERAL(28), %esp // pop arguments 769 CFI_ADJUST_CFA_OFFSET(-28) 770 ret 771 END_FUNCTION art_quick_ldiv 772 773 DEFINE_FUNCTION art_quick_lmod 774 subl LITERAL(12), %esp // alignment padding 775 CFI_ADJUST_CFA_OFFSET(12) 776 PUSH ebx // pass arg4 b.hi 777 PUSH edx // pass arg3 b.lo 778 PUSH ecx // pass arg2 a.hi 779 PUSH eax // pass arg1 a.lo 780 SETUP_GOT_NOSAVE // clobbers EBX 781 call SYMBOL(artLmod) // (jlong a, jlong b) 782 addl LITERAL(28), %esp // pop arguments 783 CFI_ADJUST_CFA_OFFSET(-28) 784 ret 785 END_FUNCTION art_quick_lmod 786 787 DEFINE_FUNCTION art_quick_lmul 788 imul %eax, %ebx // ebx = a.lo(eax) * b.hi(ebx) 789 imul %edx, %ecx // ecx = b.lo(edx) * a.hi(ecx) 790 mul %edx // edx:eax = a.lo(eax) * b.lo(edx) 791 add %ebx, %ecx 792 add %ecx, %edx // edx += (a.lo * b.hi) + (b.lo * a.hi) 793 ret 794 END_FUNCTION art_quick_lmul 795 796 DEFINE_FUNCTION art_quick_lshl 797 // ecx:eax << edx 798 xchg %edx, %ecx 799 shld %cl,%eax,%edx 800 shl %cl,%eax 801 test LITERAL(32), %cl 802 jz 1f 803 mov %eax, %edx 804 xor %eax, %eax 805 1: 806 ret 807 END_FUNCTION art_quick_lshl 808 809 DEFINE_FUNCTION art_quick_lshr 810 // ecx:eax >> edx 811 xchg %edx, %ecx 812 shrd %cl,%edx,%eax 813 sar %cl,%edx 814 test LITERAL(32),%cl 815 jz 1f 816 mov %edx, %eax 817 sar LITERAL(31), %edx 818 1: 819 ret 820 END_FUNCTION art_quick_lshr 821 822 DEFINE_FUNCTION art_quick_lushr 823 // ecx:eax >>> edx 824 xchg %edx, %ecx 825 shrd %cl,%edx,%eax 826 shr %cl,%edx 827 test LITERAL(32),%cl 828 jz 1f 829 mov %edx, %eax 830 xor %edx, %edx 831 1: 832 ret 833 END_FUNCTION art_quick_lushr 834 835 DEFINE_FUNCTION art_quick_set32_instance 836 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 837 mov %esp, %ebx // remember SP 838 subl LITERAL(8), %esp // alignment padding 839 CFI_ADJUST_CFA_OFFSET(8) 840 PUSH ebx // pass SP 841 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 842 CFI_ADJUST_CFA_OFFSET(4) 843 mov 32(%ebx), %ebx // get referrer 844 PUSH ebx // pass referrer 845 PUSH edx // pass new_val 846 PUSH ecx // pass object 847 PUSH eax // pass field_idx 848 SETUP_GOT_NOSAVE // clobbers EBX 849 call SYMBOL(artSet32InstanceFromCode) // (field_idx, Object*, new_val, 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_IF_EAX_ZERO // return or deliver exception 854 END_FUNCTION art_quick_set32_instance 855 856 DEFINE_FUNCTION art_quick_set64_instance 857 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 858 subl LITERAL(8), %esp // alignment padding 859 CFI_ADJUST_CFA_OFFSET(8) 860 PUSH esp // pass SP-8 861 addl LITERAL(8), (%esp) // fix SP on stack by adding 8 862 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 863 CFI_ADJUST_CFA_OFFSET(4) 864 PUSH ebx // pass high half of new_val 865 PUSH edx // pass low half of new_val 866 PUSH ecx // pass object 867 PUSH eax // pass field_idx 868 SETUP_GOT_NOSAVE // clobbers EBX 869 call SYMBOL(artSet64InstanceFromCode) // (field_idx, Object*, new_val, Thread*, SP) 870 addl LITERAL(32), %esp // pop arguments 871 CFI_ADJUST_CFA_OFFSET(-32) 872 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 873 RETURN_IF_EAX_ZERO // return or deliver exception 874 END_FUNCTION art_quick_set64_instance 875 876 DEFINE_FUNCTION art_quick_set_obj_instance 877 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 878 mov %esp, %ebx // remember SP 879 subl LITERAL(8), %esp // alignment padding 880 CFI_ADJUST_CFA_OFFSET(8) 881 PUSH ebx // pass SP 882 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 883 CFI_ADJUST_CFA_OFFSET(4) 884 mov 32(%ebx), %ebx // get referrer 885 PUSH ebx // pass referrer 886 PUSH edx // pass new_val 887 PUSH ecx // pass object 888 PUSH eax // pass field_idx 889 SETUP_GOT_NOSAVE // clobbers EBX 890 call SYMBOL(artSetObjInstanceFromCode) // (field_idx, Object*, new_val, referrer, Thread*, SP) 891 addl LITERAL(32), %esp // pop arguments 892 CFI_ADJUST_CFA_OFFSET(-32) 893 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 894 RETURN_IF_EAX_ZERO // return or deliver exception 895 END_FUNCTION art_quick_set_obj_instance 896 897 DEFINE_FUNCTION art_quick_get32_instance 898 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 899 mov %esp, %ebx // remember SP 900 mov 32(%esp), %edx // get referrer 901 subl LITERAL(12), %esp // alignment padding 902 CFI_ADJUST_CFA_OFFSET(12) 903 PUSH ebx // pass SP 904 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 905 CFI_ADJUST_CFA_OFFSET(4) 906 PUSH edx // pass referrer 907 PUSH ecx // pass object 908 PUSH eax // pass field_idx 909 SETUP_GOT_NOSAVE // clobbers EBX 910 call SYMBOL(artGet32InstanceFromCode) // (field_idx, Object*, referrer, Thread*, SP) 911 addl LITERAL(32), %esp // pop arguments 912 CFI_ADJUST_CFA_OFFSET(-32) 913 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 914 RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception 915 END_FUNCTION art_quick_get32_instance 916 917 DEFINE_FUNCTION art_quick_get64_instance 918 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 919 mov %esp, %ebx // remember SP 920 mov 32(%esp), %edx // get referrer 921 subl LITERAL(12), %esp // alignment padding 922 CFI_ADJUST_CFA_OFFSET(12) 923 PUSH ebx // pass SP 924 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 925 CFI_ADJUST_CFA_OFFSET(4) 926 PUSH edx // pass referrer 927 PUSH ecx // pass object 928 PUSH eax // pass field_idx 929 SETUP_GOT_NOSAVE // clobbers EBX 930 call SYMBOL(artGet64InstanceFromCode) // (field_idx, Object*, referrer, Thread*, SP) 931 addl LITERAL(32), %esp // pop arguments 932 CFI_ADJUST_CFA_OFFSET(-32) 933 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 934 RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception 935 END_FUNCTION art_quick_get64_instance 936 937 DEFINE_FUNCTION art_quick_get_obj_instance 938 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 939 mov %esp, %ebx // remember SP 940 mov 32(%esp), %edx // get referrer 941 subl LITERAL(12), %esp // alignment padding 942 CFI_ADJUST_CFA_OFFSET(12) 943 PUSH ebx // pass SP 944 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 945 CFI_ADJUST_CFA_OFFSET(4) 946 PUSH edx // pass referrer 947 PUSH ecx // pass object 948 PUSH eax // pass field_idx 949 SETUP_GOT_NOSAVE // clobbers EBX 950 call SYMBOL(artGetObjInstanceFromCode) // (field_idx, Object*, referrer, Thread*, SP) 951 addl LITERAL(32), %esp // pop arguments 952 CFI_ADJUST_CFA_OFFSET(-32) 953 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 954 RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception 955 END_FUNCTION art_quick_get_obj_instance 956 957 DEFINE_FUNCTION art_quick_set32_static 958 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 959 mov %esp, %ebx // remember SP 960 mov 32(%esp), %edx // get referrer 961 subl LITERAL(12), %esp // alignment padding 962 CFI_ADJUST_CFA_OFFSET(12) 963 PUSH ebx // pass SP 964 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 965 CFI_ADJUST_CFA_OFFSET(4) 966 PUSH edx // pass referrer 967 PUSH ecx // pass new_val 968 PUSH eax // pass field_idx 969 SETUP_GOT_NOSAVE // clobbers EBX 970 call SYMBOL(artSet32StaticFromCode) // (field_idx, new_val, referrer, Thread*, SP) 971 addl LITERAL(32), %esp // pop arguments 972 CFI_ADJUST_CFA_OFFSET(-32) 973 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 974 RETURN_IF_EAX_ZERO // return or deliver exception 975 END_FUNCTION art_quick_set32_static 976 977 DEFINE_FUNCTION art_quick_set64_static 978 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 979 mov %esp, %ebx // remember SP 980 subl LITERAL(8), %esp // alignment padding 981 CFI_ADJUST_CFA_OFFSET(8) 982 PUSH ebx // pass SP 983 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 984 CFI_ADJUST_CFA_OFFSET(4) 985 mov 32(%ebx), %ebx // get referrer 986 PUSH edx // pass high half of new_val 987 PUSH ecx // pass low half of new_val 988 PUSH ebx // pass referrer 989 PUSH eax // pass field_idx 990 SETUP_GOT_NOSAVE // clobbers EBX 991 call SYMBOL(artSet64StaticFromCode) // (field_idx, referrer, new_val, Thread*, SP) 992 addl LITERAL(32), %esp // pop arguments 993 CFI_ADJUST_CFA_OFFSET(-32) 994 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 995 RETURN_IF_EAX_ZERO // return or deliver exception 996 END_FUNCTION art_quick_set64_static 997 998 DEFINE_FUNCTION art_quick_set_obj_static 999 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 1000 mov %esp, %ebx // remember SP 1001 mov 32(%esp), %edx // get referrer 1002 subl LITERAL(12), %esp // alignment padding 1003 CFI_ADJUST_CFA_OFFSET(12) 1004 PUSH ebx // pass SP 1005 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 1006 CFI_ADJUST_CFA_OFFSET(4) 1007 PUSH edx // pass referrer 1008 PUSH ecx // pass new_val 1009 PUSH eax // pass field_idx 1010 SETUP_GOT_NOSAVE // clobbers EBX 1011 call SYMBOL(artSetObjStaticFromCode) // (field_idx, new_val, referrer, Thread*, SP) 1012 addl LITERAL(32), %esp // pop arguments 1013 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 1014 RETURN_IF_EAX_ZERO // return or deliver exception 1015 END_FUNCTION art_quick_set_obj_static 1016 1017 DEFINE_FUNCTION art_quick_get32_static 1018 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 1019 mov %esp, %edx // remember SP 1020 mov 32(%esp), %ecx // get referrer 1021 PUSH edx // pass SP 1022 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 1023 CFI_ADJUST_CFA_OFFSET(4) 1024 PUSH ecx // pass referrer 1025 PUSH eax // pass field_idx 1026 SETUP_GOT_NOSAVE // clobbers EBX 1027 call SYMBOL(artGet32StaticFromCode) // (field_idx, referrer, Thread*, SP) 1028 addl LITERAL(16), %esp // pop arguments 1029 CFI_ADJUST_CFA_OFFSET(-16) 1030 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 1031 RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception 1032 END_FUNCTION art_quick_get32_static 1033 1034 DEFINE_FUNCTION art_quick_get64_static 1035 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 1036 mov %esp, %edx // remember SP 1037 mov 32(%esp), %ecx // get referrer 1038 PUSH edx // pass SP 1039 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 1040 CFI_ADJUST_CFA_OFFSET(4) 1041 PUSH ecx // pass referrer 1042 PUSH eax // pass field_idx 1043 SETUP_GOT_NOSAVE // clobbers EBX 1044 call SYMBOL(artGet64StaticFromCode) // (field_idx, referrer, Thread*, SP) 1045 addl LITERAL(16), %esp // pop arguments 1046 CFI_ADJUST_CFA_OFFSET(-16) 1047 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 1048 RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception 1049 END_FUNCTION art_quick_get64_static 1050 1051 DEFINE_FUNCTION art_quick_get_obj_static 1052 SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC 1053 mov %esp, %edx // remember SP 1054 mov 32(%esp), %ecx // get referrer 1055 PUSH edx // pass SP 1056 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 1057 CFI_ADJUST_CFA_OFFSET(4) 1058 PUSH ecx // pass referrer 1059 PUSH eax // pass field_idx 1060 SETUP_GOT_NOSAVE // clobbers EBX 1061 call SYMBOL(artGetObjStaticFromCode) // (field_idx, referrer, Thread*, SP) 1062 addl LITERAL(16), %esp // pop arguments 1063 CFI_ADJUST_CFA_OFFSET(-16) 1064 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 1065 RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception 1066 END_FUNCTION art_quick_get_obj_static 1067 1068 DEFINE_FUNCTION art_quick_proxy_invoke_handler 1069 SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME // save frame and Method* 1070 PUSH esp // pass SP 1071 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 1072 CFI_ADJUST_CFA_OFFSET(4) 1073 PUSH ecx // pass receiver 1074 PUSH eax // pass proxy method 1075 SETUP_GOT_NOSAVE // clobbers EBX 1076 call SYMBOL(artQuickProxyInvokeHandler) // (proxy method, receiver, Thread*, SP) 1077 movd %eax, %xmm0 // place return value also into floating point return value 1078 movd %edx, %xmm1 1079 punpckldq %xmm1, %xmm0 1080 addl LITERAL(44), %esp // pop arguments 1081 CFI_ADJUST_CFA_OFFSET(-44) 1082 RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception 1083 END_FUNCTION art_quick_proxy_invoke_handler 1084 1085 /* 1086 * Called to resolve an imt conflict. xmm0 is a hidden argument that holds the target method's 1087 * dex method index. 1088 */ 1089 DEFINE_FUNCTION art_quick_imt_conflict_trampoline 1090 PUSH ecx 1091 movl 8(%esp), %eax // load caller Method* 1092 movl METHOD_DEX_CACHE_METHODS_OFFSET(%eax), %eax // load dex_cache_resolved_methods 1093 movd %xmm0, %ecx // get target method index stored in xmm0 1094 movl OBJECT_ARRAY_DATA_OFFSET(%eax, %ecx, 4), %eax // load the target method 1095 POP ecx 1096 jmp SYMBOL(art_quick_invoke_interface_trampoline) 1097 END_FUNCTION art_quick_imt_conflict_trampoline 1098 1099 DEFINE_FUNCTION art_quick_resolution_trampoline 1100 SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME 1101 movl %esp, %edi 1102 PUSH EDI // pass SP. do not just PUSH ESP; that messes up unwinding 1103 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 1104 CFI_ADJUST_CFA_OFFSET(4) 1105 PUSH ecx // pass receiver 1106 PUSH eax // pass method 1107 SETUP_GOT_NOSAVE // clobbers EBX 1108 call SYMBOL(artQuickResolutionTrampoline) // (Method* called, receiver, Thread*, SP) 1109 movl %eax, %edi // remember code pointer in EDI 1110 addl LITERAL(16), %esp // pop arguments 1111 test %eax, %eax // if code pointer is NULL goto deliver pending exception 1112 jz 1f 1113 POP eax // called method 1114 POP ecx // restore args 1115 POP edx 1116 POP ebx 1117 POP ebp // restore callee saves except EDI 1118 POP esi 1119 xchgl 0(%esp),%edi // restore EDI and place code pointer as only value on stack 1120 ret // tail call into method 1121 1: 1122 RESTORE_REF_AND_ARGS_CALLEE_SAVE_FRAME 1123 DELIVER_PENDING_EXCEPTION 1124 END_FUNCTION art_quick_resolution_trampoline 1125 1126 DEFINE_FUNCTION_NO_HIDE art_quick_generic_jni_trampoline 1127 SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME 1128 // This also stores the native ArtMethod reference at the bottom of the stack. 1129 1130 movl %esp, %ebp // save SP at callee-save frame 1131 CFI_DEF_CFA_REGISTER(ebp) 1132 subl LITERAL(5120), %esp 1133 // prepare for artQuickGenericJniTrampoline call 1134 // (Thread*, SP) 1135 // (esp) 4(esp) <= C calling convention 1136 // fs:... ebp <= where they are 1137 // Also: PLT, so need GOT in ebx. 1138 1139 subl LITERAL(8), %esp // Padding for 16B alignment. 1140 pushl %ebp // Pass SP (to ArtMethod). 1141 pushl %fs:THREAD_SELF_OFFSET // Pass Thread::Current(). 1142 SETUP_GOT_NOSAVE // Clobbers ebx. 1143 call SYMBOL(artQuickGenericJniTrampoline) // (Thread*, sp) 1144 1145 // The C call will have registered the complete save-frame on success. 1146 // The result of the call is: 1147 // eax: pointer to native code, 0 on error. 1148 // edx: pointer to the bottom of the used area of the alloca, can restore stack till there. 1149 1150 // Check for error = 0. 1151 test %eax, %eax 1152 jz .Lentry_error 1153 1154 // Release part of the alloca. 1155 movl %edx, %esp 1156 1157 // On x86 there are no registers passed, so nothing to pop here. 1158 1159 // Native call. 1160 call *%eax 1161 1162 // result sign extension is handled in C code 1163 // prepare for artQuickGenericJniEndTrampoline call 1164 // (Thread*, result, result_f) 1165 // (esp) 4(esp) 12(esp) <= C calling convention 1166 // fs:... eax:edx fp0 <= where they are 1167 1168 subl LITERAL(20), %esp // Padding & pass float result. 1169 fstpl (%esp) 1170 pushl %edx // Pass int result. 1171 pushl %eax 1172 pushl %fs:THREAD_SELF_OFFSET // Pass Thread::Current(). 1173 call SYMBOL(artQuickGenericJniEndTrampoline) 1174 1175 // Tear down the alloca. 1176 movl %ebp, %esp 1177 CFI_DEF_CFA_REGISTER(esp) 1178 1179 // Pending exceptions possible. 1180 mov %fs:THREAD_EXCEPTION_OFFSET, %ebx 1181 testl %ebx, %ebx 1182 jnz .Lexception_in_native 1183 1184 // Tear down the callee-save frame. 1185 addl LITERAL(4), %esp // Remove padding 1186 CFI_ADJUST_CFA_OFFSET(-4) 1187 POP ecx 1188 addl LITERAL(4), %esp // Avoid edx, as it may be part of the result. 1189 CFI_ADJUST_CFA_OFFSET(-4) 1190 POP ebx 1191 POP ebp // Restore callee saves 1192 POP esi 1193 POP edi 1194 // Quick expects the return value to be in xmm0. 1195 movd %eax, %xmm0 1196 movd %edx, %xmm1 1197 punpckldq %xmm1, %xmm0 1198 ret 1199 .Lentry_error: 1200 movl %ebp, %esp 1201 CFI_DEF_CFA_REGISTER(esp) 1202 .Lexception_in_native: 1203 RESTORE_REF_AND_ARGS_CALLEE_SAVE_FRAME 1204 DELIVER_PENDING_EXCEPTION 1205 END_FUNCTION art_quick_generic_jni_trampoline 1206 1207 DEFINE_FUNCTION_NO_HIDE art_quick_to_interpreter_bridge 1208 SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME // save frame 1209 mov %esp, %edx // remember SP 1210 PUSH eax // alignment padding 1211 PUSH edx // pass SP 1212 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 1213 CFI_ADJUST_CFA_OFFSET(4) 1214 PUSH eax // pass method 1215 SETUP_GOT_NOSAVE // clobbers EBX 1216 call SYMBOL(artQuickToInterpreterBridge) // (method, Thread*, SP) 1217 movd %eax, %xmm0 // place return value also into floating point return value 1218 movd %edx, %xmm1 1219 punpckldq %xmm1, %xmm0 1220 addl LITERAL(16), %esp // pop arguments 1221 CFI_ADJUST_CFA_OFFSET(-16) 1222 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME 1223 RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception 1224 END_FUNCTION art_quick_to_interpreter_bridge 1225 1226 /* 1227 * Routine that intercepts method calls and returns. 1228 */ 1229 DEFINE_FUNCTION art_quick_instrumentation_entry 1230 SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME 1231 movl %esp, %edx // Save SP. 1232 PUSH eax // Save eax which will be clobbered by the callee-save method. 1233 subl LITERAL(8), %esp // Align stack. 1234 CFI_ADJUST_CFA_OFFSET(8) 1235 pushl 40(%esp) // Pass LR. 1236 CFI_ADJUST_CFA_OFFSET(4) 1237 PUSH edx // Pass SP. 1238 pushl %fs:THREAD_SELF_OFFSET // Pass Thread::Current(). 1239 CFI_ADJUST_CFA_OFFSET(4) 1240 PUSH ecx // Pass receiver. 1241 PUSH eax // Pass Method*. 1242 SETUP_GOT_NOSAVE // clobbers EBX 1243 call SYMBOL(artInstrumentationMethodEntryFromCode) // (Method*, Object*, Thread*, SP, LR) 1244 addl LITERAL(28), %esp // Pop arguments upto saved Method*. 1245 movl 28(%esp), %edi // Restore edi. 1246 movl %eax, 28(%esp) // Place code* over edi, just under return pc. 1247 movl SYMBOL(art_quick_instrumentation_exit)@GOT(%ebx), %ebx 1248 movl %ebx, 32(%esp) 1249 // Place instrumentation exit as return pc. 1250 movl (%esp), %eax // Restore eax. 1251 movl 8(%esp), %ecx // Restore ecx. 1252 movl 12(%esp), %edx // Restore edx. 1253 movl 16(%esp), %ebx // Restore ebx. 1254 movl 20(%esp), %ebp // Restore ebp. 1255 movl 24(%esp), %esi // Restore esi. 1256 addl LITERAL(28), %esp // Wind stack back upto code*. 1257 ret // Call method (and pop). 1258 END_FUNCTION art_quick_instrumentation_entry 1259 1260 DEFINE_FUNCTION art_quick_instrumentation_exit 1261 pushl LITERAL(0) // Push a fake return PC as there will be none on the stack. 1262 SETUP_REF_ONLY_CALLEE_SAVE_FRAME 1263 mov %esp, %ecx // Remember SP 1264 subl LITERAL(8), %esp // Save float return value. 1265 CFI_ADJUST_CFA_OFFSET(8) 1266 movq %xmm0, (%esp) 1267 PUSH edx // Save gpr return value. 1268 PUSH eax 1269 subl LITERAL(16), %esp // Align stack 1270 CFI_ADJUST_CFA_OFFSET(16) 1271 movq %xmm0, (%esp) // Pass float return value. 1272 PUSH edx // Pass gpr return value. 1273 PUSH eax 1274 PUSH ecx // Pass SP. 1275 pushl %fs:THREAD_SELF_OFFSET // Pass Thread::Current. 1276 CFI_ADJUST_CFA_OFFSET(4) 1277 SETUP_GOT_NOSAVE // clobbers EBX 1278 call SYMBOL(artInstrumentationMethodExitFromCode) // (Thread*, SP, gpr_result, fpr_result) 1279 mov %eax, %ecx // Move returned link register. 1280 addl LITERAL(32), %esp // Pop arguments. 1281 CFI_ADJUST_CFA_OFFSET(-32) 1282 movl %edx, %ebx // Move returned link register for deopt 1283 // (ebx is pretending to be our LR). 1284 POP eax // Restore gpr return value. 1285 POP edx 1286 movq (%esp), %xmm0 // Restore fpr return value. 1287 addl LITERAL(8), %esp 1288 CFI_ADJUST_CFA_OFFSET(-8) 1289 RESTORE_REF_ONLY_CALLEE_SAVE_FRAME 1290 addl LITERAL(4), %esp // Remove fake return pc. 1291 jmp *%ecx // Return. 1292 END_FUNCTION art_quick_instrumentation_exit 1293 1294 /* 1295 * Instrumentation has requested that we deoptimize into the interpreter. The deoptimization 1296 * will long jump to the upcall with a special exception of -1. 1297 */ 1298 DEFINE_FUNCTION art_quick_deoptimize 1299 pushl %ebx // Fake that we were called. 1300 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME 1301 mov %esp, %ecx // Remember SP. 1302 subl LITERAL(8), %esp // Align stack. 1303 CFI_ADJUST_CFA_OFFSET(8) 1304 PUSH ecx // Pass SP. 1305 pushl %fs:THREAD_SELF_OFFSET // Pass Thread::Current(). 1306 CFI_ADJUST_CFA_OFFSET(4) 1307 SETUP_GOT_NOSAVE // clobbers EBX 1308 call SYMBOL(artDeoptimize) // artDeoptimize(Thread*, SP) 1309 int3 // Unreachable. 1310 END_FUNCTION art_quick_deoptimize 1311 1312 /* 1313 * String's compareTo. 1314 * 1315 * On entry: 1316 * eax: this string object (known non-null) 1317 * ecx: comp string object (known non-null) 1318 */ 1319 DEFINE_FUNCTION art_quick_string_compareto 1320 PUSH esi // push callee save reg 1321 PUSH edi // push callee save reg 1322 mov STRING_COUNT_OFFSET(%eax), %edx 1323 mov STRING_COUNT_OFFSET(%ecx), %ebx 1324 mov STRING_VALUE_OFFSET(%eax), %esi 1325 mov STRING_VALUE_OFFSET(%ecx), %edi 1326 mov STRING_OFFSET_OFFSET(%eax), %eax 1327 mov STRING_OFFSET_OFFSET(%ecx), %ecx 1328 /* Build pointers to the start of string data */ 1329 lea STRING_DATA_OFFSET(%esi, %eax, 2), %esi 1330 lea STRING_DATA_OFFSET(%edi, %ecx, 2), %edi 1331 /* Calculate min length and count diff */ 1332 mov %edx, %ecx 1333 mov %edx, %eax 1334 subl %ebx, %eax 1335 cmovg %ebx, %ecx 1336 /* 1337 * At this point we have: 1338 * eax: value to return if first part of strings are equal 1339 * ecx: minimum among the lengths of the two strings 1340 * esi: pointer to this string data 1341 * edi: pointer to comp string data 1342 */ 1343 jecxz .Lkeep_length 1344 repe cmpsw // find nonmatching chars in [%esi] and [%edi], up to length %ecx 1345 jne .Lnot_equal 1346 .Lkeep_length: 1347 POP edi // pop callee save reg 1348 POP esi // pop callee save reg 1349 ret 1350 .balign 16 1351 .Lnot_equal: 1352 movzwl -2(%esi), %eax // get last compared char from this string 1353 movzwl -2(%edi), %ecx // get last compared char from comp string 1354 subl %ecx, %eax // return the difference 1355 POP edi // pop callee save reg 1356 POP esi // pop callee save reg 1357 ret 1358 END_FUNCTION art_quick_string_compareto 1359 1360 // Return from a nested signal: 1361 // Entry: 1362 // eax: address of jmp_buf in TLS 1363 1364 DEFINE_FUNCTION art_nested_signal_return 1365 SETUP_GOT_NOSAVE // sets %ebx for call into PLT 1366 movl LITERAL(1), %ecx 1367 pushl %ecx // second arg to longjmp (1) 1368 pushl %eax // first arg to longjmp (jmp_buf) 1369 call PLT_SYMBOL(longjmp) 1370 int3 // won't get here. 1371 END_FUNCTION art_nested_signal_return 1372 1373 // TODO: implement these! 1374 UNIMPLEMENTED art_quick_memcmp16 1375
