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 */ 25MACRO2(SETUP_SAVE_ALL_CALLEE_SAVE_FRAME, got_reg, temp_reg) 26 PUSH edi // Save callee saves (ebx is saved/restored by the upcall) 27 PUSH esi 28 PUSH ebp 29 subl MACRO_LITERAL(12), %esp // Grow stack by 3 words. 30 CFI_ADJUST_CFA_OFFSET(12) 31 SETUP_GOT_NOSAVE RAW_VAR(got_reg, 0) 32 // Load Runtime::instance_ from GOT. 33 movl SYMBOL(_ZN3art7Runtime9instance_E)@GOT(REG_VAR(got_reg, 0)), REG_VAR(temp_reg, 1) 34 movl (REG_VAR(temp_reg, 1)), REG_VAR(temp_reg, 1) 35 // Push save all callee-save method. 36 pushl RUNTIME_SAVE_ALL_CALLEE_SAVE_FRAME_OFFSET(REG_VAR(temp_reg, 1)) 37 CFI_ADJUST_CFA_OFFSET(4) 38 // Store esp as the top quick frame. 39 movl %esp, %fs:THREAD_TOP_QUICK_FRAME_OFFSET 40 // Ugly compile-time check, but we only have the preprocessor. 41 // Last +4: implicit return address pushed on stack when caller made call. 42#if (FRAME_SIZE_SAVE_ALL_CALLEE_SAVE != 3*4 + 16 + 4) 43#error "SAVE_ALL_CALLEE_SAVE_FRAME(X86) size not as expected." 44#endif 45END_MACRO 46 47 /* 48 * Macro that sets up the callee save frame to conform with 49 * Runtime::CreateCalleeSaveMethod(kRefsOnly) 50 */ 51MACRO2(SETUP_REFS_ONLY_CALLEE_SAVE_FRAME, got_reg, temp_reg) 52 PUSH edi // Save callee saves (ebx is saved/restored by the upcall) 53 PUSH esi 54 PUSH ebp 55 subl MACRO_LITERAL(12), %esp // Grow stack by 3 words. 56 CFI_ADJUST_CFA_OFFSET(12) 57 SETUP_GOT_NOSAVE VAR(got_reg, 0) 58 // Load Runtime::instance_ from GOT. 59 movl SYMBOL(_ZN3art7Runtime9instance_E)@GOT(REG_VAR(got_reg, 0)), REG_VAR(temp_reg, 1) 60 movl (REG_VAR(temp_reg, 1)), REG_VAR(temp_reg, 1) 61 // Push save all callee-save method. 62 pushl RUNTIME_REFS_ONLY_CALLEE_SAVE_FRAME_OFFSET(REG_VAR(temp_reg, 1)) 63 CFI_ADJUST_CFA_OFFSET(4) 64 // Store esp as the top quick frame. 65 movl %esp, %fs:THREAD_TOP_QUICK_FRAME_OFFSET 66 67 // Ugly compile-time check, but we only have the preprocessor. 68 // Last +4: implicit return address pushed on stack when caller made call. 69#if (FRAME_SIZE_REFS_ONLY_CALLEE_SAVE != 3*4 + 16 + 4) 70#error "REFS_ONLY_CALLEE_SAVE_FRAME(X86) size not as expected." 71#endif 72END_MACRO 73 74MACRO0(RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME) 75 addl MACRO_LITERAL(16), %esp // Unwind stack up to saved values 76 CFI_ADJUST_CFA_OFFSET(-16) 77 POP ebp // Restore callee saves (ebx is saved/restored by the upcall) 78 POP esi 79 POP edi 80END_MACRO 81 82 /* 83 * Macro that sets up the callee save frame to conform with 84 * Runtime::CreateCalleeSaveMethod(kRefsAndArgs) 85 */ 86MACRO2(SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME, got_reg, temp_reg) 87 PUSH edi // Save callee saves 88 PUSH esi 89 PUSH ebp 90 PUSH ebx // Save args 91 PUSH edx 92 PUSH ecx 93 // Create space for FPR args. 94 subl MACRO_LITERAL(4 * 8), %esp 95 CFI_ADJUST_CFA_OFFSET(4 * 8) 96 // Save FPRs. 97 movsd %xmm0, 0(%esp) 98 movsd %xmm1, 8(%esp) 99 movsd %xmm2, 16(%esp) 100 movsd %xmm3, 24(%esp) 101 102 SETUP_GOT_NOSAVE VAR(got_reg, 0) 103 // Load Runtime::instance_ from GOT. 104 movl SYMBOL(_ZN3art7Runtime9instance_E)@GOT(REG_VAR(got_reg, 0)), REG_VAR(temp_reg, 1) 105 movl (REG_VAR(temp_reg, 1)), REG_VAR(temp_reg, 1) 106 // Push save all callee-save method. 107 pushl RUNTIME_REFS_AND_ARGS_CALLEE_SAVE_FRAME_OFFSET(REG_VAR(temp_reg, 1)) 108 CFI_ADJUST_CFA_OFFSET(4) 109 // Store esp as the stop quick frame. 110 movl %esp, %fs:THREAD_TOP_QUICK_FRAME_OFFSET 111 112 // Ugly compile-time check, but we only have the preprocessor. 113 // Last +4: implicit return address pushed on stack when caller made call. 114#if (FRAME_SIZE_REFS_AND_ARGS_CALLEE_SAVE != 7*4 + 4*8 + 4) 115#error "REFS_AND_ARGS_CALLEE_SAVE_FRAME(X86) size not as expected." 116#endif 117END_MACRO 118 119 /* 120 * Macro that sets up the callee save frame to conform with 121 * Runtime::CreateCalleeSaveMethod(kRefsAndArgs) where the method is passed in EAX. 122 */ 123MACRO0(SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME_WITH_METHOD_IN_EAX) 124 // Save callee and GPR args, mixed together to agree with core spills bitmap. 125 PUSH edi // Save callee saves 126 PUSH esi 127 PUSH ebp 128 PUSH ebx // Save args 129 PUSH edx 130 PUSH ecx 131 132 // Create space for FPR args. 133 subl MACRO_LITERAL(32), %esp 134 CFI_ADJUST_CFA_OFFSET(32) 135 136 // Save FPRs. 137 movsd %xmm0, 0(%esp) 138 movsd %xmm1, 8(%esp) 139 movsd %xmm2, 16(%esp) 140 movsd %xmm3, 24(%esp) 141 142 PUSH eax // Store the ArtMethod reference at the bottom of the stack. 143 // Store esp as the stop quick frame. 144 movl %esp, %fs:THREAD_TOP_QUICK_FRAME_OFFSET 145END_MACRO 146 147MACRO0(RESTORE_REFS_AND_ARGS_CALLEE_SAVE_FRAME) 148 // Restore FPRs. EAX is still on the stack. 149 movsd 4(%esp), %xmm0 150 movsd 12(%esp), %xmm1 151 movsd 20(%esp), %xmm2 152 movsd 28(%esp), %xmm3 153 154 addl MACRO_LITERAL(36), %esp // Remove FPRs and EAX. 155 CFI_ADJUST_CFA_OFFSET(-36) 156 157 POP ecx // Restore args except eax 158 POP edx 159 POP ebx 160 POP ebp // Restore callee saves 161 POP esi 162 POP edi 163END_MACRO 164 165// Restore register and jump to routine 166// Inputs: EDI contains pointer to code. 167// Notes: Need to pop EAX too (restores Method*) 168MACRO0(RESTORE_REFS_AND_ARGS_CALLEE_SAVE_FRAME_AND_JUMP) 169 POP eax // Restore Method* 170 171 // Restore FPRs. 172 movsd 0(%esp), %xmm0 173 movsd 8(%esp), %xmm1 174 movsd 16(%esp), %xmm2 175 movsd 24(%esp), %xmm3 176 177 addl MACRO_LITERAL(32), %esp // Remove FPRs. 178 CFI_ADJUST_CFA_OFFSET(-32) 179 180 POP ecx // Restore args except eax 181 POP edx 182 POP ebx 183 POP ebp // Restore callee saves 184 POP esi 185 xchgl 0(%esp),%edi // restore EDI and place code pointer as only value on stack 186 ret 187END_MACRO 188 189 /* 190 * Macro that set calls through to artDeliverPendingExceptionFromCode, where the pending 191 * exception is Thread::Current()->exception_. 192 */ 193MACRO0(DELIVER_PENDING_EXCEPTION) 194 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME ebx, ebx // save callee saves for throw 195 // Outgoing argument set up 196 subl MACRO_LITERAL(12), %esp // Alignment padding 197 CFI_ADJUST_CFA_OFFSET(12) 198 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 199 CFI_ADJUST_CFA_OFFSET(4) 200 call SYMBOL(artDeliverPendingExceptionFromCode) // artDeliverPendingExceptionFromCode(Thread*) 201 int3 // unreached 202END_MACRO 203 204MACRO2(NO_ARG_RUNTIME_EXCEPTION, c_name, cxx_name) 205 DEFINE_FUNCTION RAW_VAR(c_name, 0) 206 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME ebx, ebx // save all registers as basis for long jump context 207 // Outgoing argument set up 208 subl MACRO_LITERAL(12), %esp // alignment padding 209 CFI_ADJUST_CFA_OFFSET(12) 210 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 211 CFI_ADJUST_CFA_OFFSET(4) 212 call VAR(cxx_name, 1) // cxx_name(Thread*) 213 int3 // unreached 214 END_FUNCTION RAW_VAR(c_name, 0) 215END_MACRO 216 217MACRO2(ONE_ARG_RUNTIME_EXCEPTION, c_name, cxx_name) 218 DEFINE_FUNCTION RAW_VAR(c_name, 0) 219 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME ebx, ebx // save all registers as basis for long jump context 220 mov %esp, %ecx 221 // Outgoing argument set up 222 subl MACRO_LITERAL(8), %esp // alignment padding 223 CFI_ADJUST_CFA_OFFSET(8) 224 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 225 CFI_ADJUST_CFA_OFFSET(4) 226 PUSH eax // pass arg1 227 call VAR(cxx_name, 1) // cxx_name(arg1, Thread*) 228 int3 // unreached 229 END_FUNCTION RAW_VAR(c_name, 0) 230END_MACRO 231 232MACRO2(TWO_ARG_RUNTIME_EXCEPTION, c_name, cxx_name) 233 DEFINE_FUNCTION RAW_VAR(c_name, 0) 234 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME ebx, ebx // save all registers as basis for long jump context 235 // Outgoing argument set up 236 PUSH eax // alignment padding 237 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 238 CFI_ADJUST_CFA_OFFSET(4) 239 PUSH ecx // pass arg2 240 PUSH eax // pass arg1 241 call VAR(cxx_name, 1) // cxx_name(arg1, arg2, Thread*) 242 int3 // unreached 243 END_FUNCTION RAW_VAR(c_name, 0) 244END_MACRO 245 246 /* 247 * Called by managed code to create and deliver a NullPointerException. 248 */ 249NO_ARG_RUNTIME_EXCEPTION art_quick_throw_null_pointer_exception, artThrowNullPointerExceptionFromCode 250 251 /* 252 * Called by managed code to create and deliver an ArithmeticException. 253 */ 254NO_ARG_RUNTIME_EXCEPTION art_quick_throw_div_zero, artThrowDivZeroFromCode 255 256 /* 257 * Called by managed code to create and deliver a StackOverflowError. 258 */ 259NO_ARG_RUNTIME_EXCEPTION art_quick_throw_stack_overflow, artThrowStackOverflowFromCode 260 261 /* 262 * Called by managed code, saves callee saves and then calls artThrowException 263 * that will place a mock Method* at the bottom of the stack. Arg1 holds the exception. 264 */ 265ONE_ARG_RUNTIME_EXCEPTION art_quick_deliver_exception, artDeliverExceptionFromCode 266 267 /* 268 * Called by managed code to create and deliver a NoSuchMethodError. 269 */ 270ONE_ARG_RUNTIME_EXCEPTION art_quick_throw_no_such_method, artThrowNoSuchMethodFromCode 271 272 /* 273 * Called by managed code to create and deliver an ArrayIndexOutOfBoundsException. Arg1 holds 274 * index, arg2 holds limit. 275 */ 276TWO_ARG_RUNTIME_EXCEPTION art_quick_throw_array_bounds, artThrowArrayBoundsFromCode 277 278 /* 279 * All generated callsites for interface invokes and invocation slow paths will load arguments 280 * as usual - except instead of loading arg0/r0 with the target Method*, arg0/r0 will contain 281 * the method_idx. This wrapper will save arg1-arg3, load the caller's Method*, align the 282 * stack and call the appropriate C helper. 283 * NOTE: "this" is first visible argument of the target, and so can be found in arg1/r1. 284 * 285 * The helper will attempt to locate the target and return a 64-bit result in r0/r1 consisting 286 * of the target Method* in r0 and method->code_ in r1. 287 * 288 * If unsuccessful, the helper will return null/null will bea pending exception in the 289 * thread and we branch to another stub to deliver it. 290 * 291 * On success this wrapper will restore arguments and *jump* to the target, leaving the lr 292 * pointing back to the original caller. 293 */ 294MACRO2(INVOKE_TRAMPOLINE, c_name, cxx_name) 295 DEFINE_FUNCTION RAW_VAR(c_name, 0) 296 SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME ebx, ebx 297 movl %esp, %edx // remember SP 298 299 // Outgoing argument set up 300 subl MACRO_LITERAL(12), %esp // alignment padding 301 CFI_ADJUST_CFA_OFFSET(12) 302 PUSH edx // pass SP 303 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 304 CFI_ADJUST_CFA_OFFSET(4) 305 pushl 32+32(%edx) // pass caller Method* 306 CFI_ADJUST_CFA_OFFSET(4) 307 PUSH ecx // pass arg2 308 PUSH eax // pass arg1 309 call VAR(cxx_name, 1) // cxx_name(arg1, arg2, arg3, Thread*, SP) 310 movl %edx, %edi // save code pointer in EDI 311 addl MACRO_LITERAL(36), %esp // Pop arguments skip eax 312 CFI_ADJUST_CFA_OFFSET(-36) 313 314 // Restore FPRs. 315 movsd 0(%esp), %xmm0 316 movsd 8(%esp), %xmm1 317 movsd 16(%esp), %xmm2 318 movsd 24(%esp), %xmm3 319 320 // Remove space for FPR args. 321 addl MACRO_LITERAL(4 * 8), %esp 322 CFI_ADJUST_CFA_OFFSET(-4 * 8) 323 324 POP ecx // Restore args except eax 325 POP edx 326 POP ebx 327 POP ebp // Restore callee saves 328 POP esi 329 // Swap EDI callee save with code pointer. 330 xchgl %edi, (%esp) 331 testl %eax, %eax // Branch forward if exception pending. 332 jz 1f 333 // Tail call to intended method. 334 ret 3351: 336 addl MACRO_LITERAL(4), %esp // Pop code pointer off stack 337 CFI_ADJUST_CFA_OFFSET(-4) 338 DELIVER_PENDING_EXCEPTION 339 END_FUNCTION RAW_VAR(c_name, 0) 340END_MACRO 341 342INVOKE_TRAMPOLINE art_quick_invoke_interface_trampoline, artInvokeInterfaceTrampoline 343INVOKE_TRAMPOLINE art_quick_invoke_interface_trampoline_with_access_check, artInvokeInterfaceTrampolineWithAccessCheck 344 345INVOKE_TRAMPOLINE art_quick_invoke_static_trampoline_with_access_check, artInvokeStaticTrampolineWithAccessCheck 346INVOKE_TRAMPOLINE art_quick_invoke_direct_trampoline_with_access_check, artInvokeDirectTrampolineWithAccessCheck 347INVOKE_TRAMPOLINE art_quick_invoke_super_trampoline_with_access_check, artInvokeSuperTrampolineWithAccessCheck 348INVOKE_TRAMPOLINE art_quick_invoke_virtual_trampoline_with_access_check, artInvokeVirtualTrampolineWithAccessCheck 349 350 /* 351 * Helper for quick invocation stub to set up XMM registers. 352 * Increments shorty and arg_array and clobbers temp_char. 353 * Branches to finished if it encounters the end of the shorty. 354 */ 355MACRO5(LOOP_OVER_SHORTY_LOADING_XMMS, xmm_reg, shorty, arg_array, temp_char, finished) 3561: // LOOP 357 movb (REG_VAR(shorty, 1)), REG_VAR(temp_char, 3) // temp_char := *shorty 358 addl MACRO_LITERAL(1), REG_VAR(shorty, 1) // shorty++ 359 cmpb MACRO_LITERAL(0), REG_VAR(temp_char, 3) // if (temp_char == '\0') 360 je RAW_VAR(finished, 4) // goto finished 361 cmpb MACRO_LITERAL(68), REG_VAR(temp_char, 3) // if (temp_char == 'D') 362 je 2f // goto FOUND_DOUBLE 363 cmpb MACRO_LITERAL(70), REG_VAR(temp_char, 3) // if (temp_char == 'F') 364 je 3f // goto FOUND_FLOAT 365 addl MACRO_LITERAL(4), REG_VAR(arg_array, 2) // arg_array++ 366 // Handle extra space in arg array taken by a long. 367 cmpb MACRO_LITERAL(74), REG_VAR(temp_char, 3) // if (temp_char != 'J') 368 jne 1b // goto LOOP 369 addl MACRO_LITERAL(4), REG_VAR(arg_array, 2) // arg_array++ 370 jmp 1b // goto LOOP 3712: // FOUND_DOUBLE 372 movsd (REG_VAR(arg_array, 2)), REG_VAR(xmm_reg, 0) 373 addl MACRO_LITERAL(8), REG_VAR(arg_array, 2) // arg_array+=2 374 jmp 4f 3753: // FOUND_FLOAT 376 movss (REG_VAR(arg_array, 2)), REG_VAR(xmm_reg, 0) 377 addl MACRO_LITERAL(4), REG_VAR(arg_array, 2) // arg_array++ 3784: 379END_MACRO 380 381 /* 382 * Helper for quick invocation stub to set up GPR registers. 383 * Increments shorty and arg_array, and returns the current short character in 384 * temp_char. Branches to finished if it encounters the end of the shorty. 385 */ 386MACRO4(SKIP_OVER_FLOATS, shorty, arg_array, temp_char, finished) 3871: // LOOP: 388 movb (REG_VAR(shorty, 0)), REG_VAR(temp_char, 2) // temp_char := *shorty 389 addl MACRO_LITERAL(1), REG_VAR(shorty, 0) // shorty++ 390 cmpb MACRO_LITERAL(0), REG_VAR(temp_char, 2) // if (temp_char == '\0') 391 je RAW_VAR(finished, 3) // goto finished 392 cmpb MACRO_LITERAL(70), REG_VAR(temp_char, 2) // if (temp_char == 'F') 393 je 3f // goto SKIP_FLOAT 394 cmpb MACRO_LITERAL(68), REG_VAR(temp_char, 2) // if (temp_char == 'D') 395 je 4f // goto SKIP_DOUBLE 396 jmp 5f // goto end 3973: // SKIP_FLOAT 398 addl MACRO_LITERAL(4), REG_VAR(arg_array, 1) // arg_array++ 399 jmp 1b // goto LOOP 4004: // SKIP_DOUBLE 401 addl MACRO_LITERAL(8), REG_VAR(arg_array, 1) // arg_array+=2 402 jmp 1b // goto LOOP 4035: 404END_MACRO 405 406 /* 407 * Quick invocation stub (non-static). 408 * On entry: 409 * [sp] = return address 410 * [sp + 4] = method pointer 411 * [sp + 8] = argument array or null for no argument methods 412 * [sp + 12] = size of argument array in bytes 413 * [sp + 16] = (managed) thread pointer 414 * [sp + 20] = JValue* result 415 * [sp + 24] = shorty 416 */ 417DEFINE_FUNCTION art_quick_invoke_stub 418 // Save the non-volatiles. 419 PUSH ebp // save ebp 420 PUSH ebx // save ebx 421 PUSH esi // save esi 422 PUSH edi // save edi 423 // Set up argument XMM registers. 424 mov 24+16(%esp), %esi // ESI := shorty + 1 ; ie skip return arg character. 425 addl LITERAL(1), %esi 426 mov 8+16(%esp), %edi // EDI := arg_array + 4 ; ie skip this pointer. 427 addl LITERAL(4), %edi 428 // Clobbers ESI, EDI, EAX. 429 LOOP_OVER_SHORTY_LOADING_XMMS xmm0, esi, edi, al, .Lxmm_setup_finished 430 LOOP_OVER_SHORTY_LOADING_XMMS xmm1, esi, edi, al, .Lxmm_setup_finished 431 LOOP_OVER_SHORTY_LOADING_XMMS xmm2, esi, edi, al, .Lxmm_setup_finished 432 LOOP_OVER_SHORTY_LOADING_XMMS xmm3, esi, edi, al, .Lxmm_setup_finished 433 .balign 16 434.Lxmm_setup_finished: 435 mov %esp, %ebp // copy value of stack pointer into base pointer 436 CFI_DEF_CFA_REGISTER(ebp) 437 mov 28(%ebp), %ebx // get arg array size 438 // reserve space for return addr, method*, ebx, ebp, esi, and edi in frame 439 addl LITERAL(36), %ebx 440 // align frame size to 16 bytes 441 andl LITERAL(0xFFFFFFF0), %ebx 442 subl LITERAL(20), %ebx // remove space for return address, ebx, ebp, esi and edi 443 subl %ebx, %esp // reserve stack space for argument array 444 445 movl LITERAL(0), (%esp) // store null for method* 446 447 // Copy arg array into stack. 448 movl 28(%ebp), %ecx // ECX = size of args 449 movl 24(%ebp), %esi // ESI = argument array 450 leal 4(%esp), %edi // EDI = just after Method* in stack arguments 451 rep movsb // while (ecx--) { *edi++ = *esi++ } 452 453 mov 40(%ebp), %esi // ESI := shorty + 1 ; ie skip return arg character. 454 addl LITERAL(1), %esi 455 mov 24(%ebp), %edi // EDI := arg_array 456 mov 0(%edi), %ecx // ECX := this pointer 457 addl LITERAL(4), %edi // EDI := arg_array + 4 ; ie skip this pointer. 458 459 // Enumerate the possible cases for loading GPRS. 460 // edx (and maybe ebx): 461 SKIP_OVER_FLOATS esi, edi, al, .Lgpr_setup_finished 462 cmpb LITERAL(74), %al // if (al == 'J') goto FOUND_LONG 463 je .LfirstLong 464 // Must be an integer value. 465 movl (%edi), %edx 466 addl LITERAL(4), %edi // arg_array++ 467 468 // Now check ebx 469 SKIP_OVER_FLOATS esi, edi, al, .Lgpr_setup_finished 470 // Must be first word of a long, or an integer. First word of long doesn't 471 // go into EBX, but can be loaded there anyways, as it is harmless. 472 movl (%edi), %ebx 473 jmp .Lgpr_setup_finished 474.LfirstLong: 475 movl (%edi), %edx 476 movl 4(%edi), %ebx 477 // Nothing left to load. 478.Lgpr_setup_finished: 479 mov 20(%ebp), %eax // move method pointer into eax 480 call *ART_METHOD_QUICK_CODE_OFFSET_32(%eax) // call the method 481 mov %ebp, %esp // restore stack pointer 482 CFI_DEF_CFA_REGISTER(esp) 483 POP edi // pop edi 484 POP esi // pop esi 485 POP ebx // pop ebx 486 POP ebp // pop ebp 487 mov 20(%esp), %ecx // get result pointer 488 mov %eax, (%ecx) // store the result assuming its a long, int or Object* 489 mov %edx, 4(%ecx) // store the other half of the result 490 mov 24(%esp), %edx // get the shorty 491 cmpb LITERAL(68), (%edx) // test if result type char == 'D' 492 je .Lreturn_double_quick 493 cmpb LITERAL(70), (%edx) // test if result type char == 'F' 494 je .Lreturn_float_quick 495 ret 496.Lreturn_double_quick: 497 movsd %xmm0, (%ecx) // store the floating point result 498 ret 499.Lreturn_float_quick: 500 movss %xmm0, (%ecx) // store the floating point result 501 ret 502END_FUNCTION art_quick_invoke_stub 503 504 /* 505 * Quick invocation stub (static). 506 * On entry: 507 * [sp] = return address 508 * [sp + 4] = method pointer 509 * [sp + 8] = argument array or null for no argument methods 510 * [sp + 12] = size of argument array in bytes 511 * [sp + 16] = (managed) thread pointer 512 * [sp + 20] = JValue* result 513 * [sp + 24] = shorty 514 */ 515DEFINE_FUNCTION art_quick_invoke_static_stub 516 // Save the non-volatiles. 517 PUSH ebp // save ebp 518 PUSH ebx // save ebx 519 PUSH esi // save esi 520 PUSH edi // save edi 521 // Set up argument XMM registers. 522 mov 24+16(%esp), %esi // ESI := shorty + 1 ; ie skip return arg character. 523 addl LITERAL(1), %esi 524 mov 8+16(%esp), %edi // EDI := arg_array 525 // Clobbers ESI, EDI, EAX. 526 LOOP_OVER_SHORTY_LOADING_XMMS xmm0, esi, edi, al, .Lxmm_setup_finished2 527 LOOP_OVER_SHORTY_LOADING_XMMS xmm1, esi, edi, al, .Lxmm_setup_finished2 528 LOOP_OVER_SHORTY_LOADING_XMMS xmm2, esi, edi, al, .Lxmm_setup_finished2 529 LOOP_OVER_SHORTY_LOADING_XMMS xmm3, esi, edi, al, .Lxmm_setup_finished2 530 .balign 16 531.Lxmm_setup_finished2: 532 mov %esp, %ebp // copy value of stack pointer into base pointer 533 CFI_DEF_CFA_REGISTER(ebp) 534 mov 28(%ebp), %ebx // get arg array size 535 // reserve space for return addr, method*, ebx, ebp, esi, and edi in frame 536 addl LITERAL(36), %ebx 537 // align frame size to 16 bytes 538 andl LITERAL(0xFFFFFFF0), %ebx 539 subl LITERAL(20), %ebx // remove space for return address, ebx, ebp, esi and edi 540 subl %ebx, %esp // reserve stack space for argument array 541 542 movl LITERAL(0), (%esp) // store null for method* 543 544 // Copy arg array into stack. 545 movl 28(%ebp), %ecx // ECX = size of args 546 movl 24(%ebp), %esi // ESI = argument array 547 leal 4(%esp), %edi // EDI = just after Method* in stack arguments 548 rep movsb // while (ecx--) { *edi++ = *esi++ } 549 550 mov 40(%ebp), %esi // ESI := shorty + 1 ; ie skip return arg character. 551 addl LITERAL(1), %esi 552 mov 24(%ebp), %edi // EDI := arg_array 553 554 // Enumerate the possible cases for loading GPRS. 555 // ecx (and maybe edx) 556 SKIP_OVER_FLOATS esi, edi, al, .Lgpr_setup_finished2 557 cmpb LITERAL(74), %al // if (al == 'J') goto FOUND_LONG 558 je .LfirstLong2 559 // Must be an integer value. Load into ECX. 560 movl (%edi), %ecx 561 addl LITERAL(4), %edi // arg_array++ 562 563 // Now check edx (and maybe ebx). 564 SKIP_OVER_FLOATS esi, edi, al, .Lgpr_setup_finished2 565 cmpb LITERAL(74), %al // if (al == 'J') goto FOUND_LONG 566 je .LSecondLong2 567 // Must be an integer. Load into EDX. 568 movl (%edi), %edx 569 addl LITERAL(4), %edi // arg_array++ 570 571 // Is there anything for ebx? 572 SKIP_OVER_FLOATS esi, edi, al, .Lgpr_setup_finished2 573 // Must be first word of a long, or an integer. First word of long doesn't 574 // go into EBX, but can be loaded there anyways, as it is harmless. 575 movl (%edi), %ebx 576 jmp .Lgpr_setup_finished2 577.LSecondLong2: 578 // EDX:EBX is long. That is all. 579 movl (%edi), %edx 580 movl 4(%edi), %ebx 581 jmp .Lgpr_setup_finished2 582.LfirstLong2: 583 // ECX:EDX is a long 584 movl (%edi), %ecx 585 movl 4(%edi), %edx 586 addl LITERAL(8), %edi // arg_array += 2 587 588 // Anything for EBX? 589 SKIP_OVER_FLOATS esi, edi, al, .Lgpr_setup_finished2 590 // Must be first word of a long, or an integer. First word of long doesn't 591 // go into EBX, but can be loaded there anyways, as it is harmless. 592 movl (%edi), %ebx 593 jmp .Lgpr_setup_finished2 594 // Nothing left to load. 595.Lgpr_setup_finished2: 596 mov 20(%ebp), %eax // move method pointer into eax 597 call *ART_METHOD_QUICK_CODE_OFFSET_32(%eax) // call the method 598 mov %ebp, %esp // restore stack pointer 599 CFI_DEF_CFA_REGISTER(esp) 600 POP edi // pop edi 601 POP esi // pop esi 602 POP ebx // pop ebx 603 POP ebp // pop ebp 604 mov 20(%esp), %ecx // get result pointer 605 mov %eax, (%ecx) // store the result assuming its a long, int or Object* 606 mov %edx, 4(%ecx) // store the other half of the result 607 mov 24(%esp), %edx // get the shorty 608 cmpb LITERAL(68), (%edx) // test if result type char == 'D' 609 je .Lreturn_double_quick2 610 cmpb LITERAL(70), (%edx) // test if result type char == 'F' 611 je .Lreturn_float_quick2 612 ret 613.Lreturn_double_quick2: 614 movsd %xmm0, (%ecx) // store the floating point result 615 ret 616.Lreturn_float_quick2: 617 movss %xmm0, (%ecx) // store the floating point result 618 ret 619END_FUNCTION art_quick_invoke_static_stub 620 621MACRO3(NO_ARG_DOWNCALL, c_name, cxx_name, return_macro) 622 DEFINE_FUNCTION RAW_VAR(c_name, 0) 623 SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC 624 // Outgoing argument set up 625 subl MACRO_LITERAL(12), %esp // push padding 626 CFI_ADJUST_CFA_OFFSET(12) 627 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 628 CFI_ADJUST_CFA_OFFSET(4) 629 call VAR(cxx_name, 1) // cxx_name(Thread*) 630 addl MACRO_LITERAL(16), %esp // pop arguments 631 CFI_ADJUST_CFA_OFFSET(-16) 632 RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 633 CALL_MACRO(return_macro, 2) // return or deliver exception 634 END_FUNCTION RAW_VAR(c_name, 0) 635END_MACRO 636 637MACRO3(ONE_ARG_DOWNCALL, c_name, cxx_name, return_macro) 638 DEFINE_FUNCTION RAW_VAR(c_name, 0) 639 SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC 640 // Outgoing argument set up 641 subl MACRO_LITERAL(8), %esp // push padding 642 CFI_ADJUST_CFA_OFFSET(8) 643 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 644 CFI_ADJUST_CFA_OFFSET(4) 645 PUSH eax // pass arg1 646 call VAR(cxx_name, 1) // cxx_name(arg1, Thread*) 647 addl MACRO_LITERAL(16), %esp // pop arguments 648 CFI_ADJUST_CFA_OFFSET(-16) 649 RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 650 CALL_MACRO(return_macro, 2) // return or deliver exception 651 END_FUNCTION RAW_VAR(c_name, 0) 652END_MACRO 653 654MACRO3(TWO_ARG_DOWNCALL, c_name, cxx_name, return_macro) 655 DEFINE_FUNCTION RAW_VAR(c_name, 0) 656 SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC 657 // Outgoing argument set up 658 PUSH eax // push padding 659 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 660 CFI_ADJUST_CFA_OFFSET(4) 661 PUSH ecx // pass arg2 662 PUSH eax // pass arg1 663 call VAR(cxx_name, 1) // cxx_name(arg1, arg2, Thread*) 664 addl MACRO_LITERAL(16), %esp // pop arguments 665 CFI_ADJUST_CFA_OFFSET(-16) 666 RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 667 CALL_MACRO(return_macro, 2) // return or deliver exception 668 END_FUNCTION RAW_VAR(c_name, 0) 669END_MACRO 670 671MACRO3(THREE_ARG_DOWNCALL, c_name, cxx_name, return_macro) 672 DEFINE_FUNCTION RAW_VAR(c_name, 0) 673 SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC 674 // Outgoing argument set up 675 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 676 CFI_ADJUST_CFA_OFFSET(4) 677 PUSH edx // pass arg3 678 PUSH ecx // pass arg2 679 PUSH eax // pass arg1 680 call VAR(cxx_name, 1) // cxx_name(arg1, arg2, arg3, Thread*) 681 addl MACRO_LITERAL(16), %esp // pop arguments 682 CFI_ADJUST_CFA_OFFSET(-16) 683 RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 684 CALL_MACRO(return_macro, 2) // return or deliver exception 685 END_FUNCTION RAW_VAR(c_name, 0) 686END_MACRO 687 688MACRO3(FOUR_ARG_DOWNCALL, c_name, cxx_name, return_macro) 689 DEFINE_FUNCTION RAW_VAR(c_name, 0) 690 SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC 691 // Outgoing argument set up 692 subl MACRO_LITERAL(12), %esp // alignment padding 693 CFI_ADJUST_CFA_OFFSET(12) 694 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 695 CFI_ADJUST_CFA_OFFSET(4) 696 PUSH ebx // pass arg4 697 PUSH edx // pass arg3 698 PUSH ecx // pass arg2 699 PUSH eax // pass arg1 700 call VAR(cxx_name, 1) // cxx_name(arg1, arg2, arg3, arg4, Thread*) 701 addl MACRO_LITERAL(32), %esp // pop arguments 702 CFI_ADJUST_CFA_OFFSET(-32) 703 RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 704 CALL_MACRO(return_macro, 2) // return or deliver exception 705 END_FUNCTION RAW_VAR(c_name, 0) 706END_MACRO 707 708MACRO3(ONE_ARG_REF_DOWNCALL, c_name, cxx_name, return_macro) 709 DEFINE_FUNCTION RAW_VAR(c_name, 0) 710 SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC 711 // Outgoing argument set up 712 mov FRAME_SIZE_REFS_ONLY_CALLEE_SAVE(%esp), %ecx // get referrer 713 PUSH eax // push padding 714 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 715 CFI_ADJUST_CFA_OFFSET(4) 716 PUSH ecx // pass referrer 717 PUSH eax // pass arg1 718 call VAR(cxx_name, 1) // cxx_name(arg1, referrer, Thread*) 719 addl MACRO_LITERAL(16), %esp // pop arguments 720 CFI_ADJUST_CFA_OFFSET(-16) 721 RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 722 CALL_MACRO(return_macro, 2) // return or deliver exception 723 END_FUNCTION RAW_VAR(c_name, 0) 724END_MACRO 725 726MACRO3(TWO_ARG_REF_DOWNCALL, c_name, cxx_name, return_macro) 727 DEFINE_FUNCTION RAW_VAR(c_name, 0) 728 SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC 729 // Outgoing argument set up 730 mov FRAME_SIZE_REFS_ONLY_CALLEE_SAVE(%esp), %edx // get referrer 731 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 732 CFI_ADJUST_CFA_OFFSET(4) 733 PUSH edx // pass referrer 734 PUSH ecx // pass arg2 735 PUSH eax // pass arg1 736 call VAR(cxx_name, 1) // cxx_name(arg1, arg2, referrer, Thread*) 737 addl MACRO_LITERAL(16), %esp // pop arguments 738 CFI_ADJUST_CFA_OFFSET(-16) 739 RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 740 CALL_MACRO(return_macro, 2) // return or deliver exception 741 END_FUNCTION RAW_VAR(c_name, 0) 742END_MACRO 743 744MACRO3(THREE_ARG_REF_DOWNCALL, c_name, cxx_name, return_macro) 745 DEFINE_FUNCTION RAW_VAR(c_name, 0) 746 SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC 747 // Outgoing argument set up 748 mov FRAME_SIZE_REFS_ONLY_CALLEE_SAVE(%esp), %ebx // get referrer 749 subl MACRO_LITERAL(12), %esp // alignment padding 750 CFI_ADJUST_CFA_OFFSET(12) 751 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 752 CFI_ADJUST_CFA_OFFSET(4) 753 PUSH ebx // pass referrer 754 PUSH edx // pass arg3 755 PUSH ecx // pass arg2 756 PUSH eax // pass arg1 757 call VAR(cxx_name, 1) // cxx_name(arg1, arg2, arg3, referrer, Thread*) 758 addl LITERAL(32), %esp // pop arguments 759 CFI_ADJUST_CFA_OFFSET(-32) 760 RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 761 CALL_MACRO(return_macro, 2) // return or deliver exception 762 END_FUNCTION RAW_VAR(c_name, 0) 763END_MACRO 764 765MACRO0(RETURN_IF_RESULT_IS_NON_ZERO) 766 testl %eax, %eax // eax == 0 ? 767 jz 1f // if eax == 0 goto 1 768 ret // return 7691: // deliver exception on current thread 770 DELIVER_PENDING_EXCEPTION 771END_MACRO 772 773MACRO0(RETURN_IF_EAX_ZERO) 774 testl %eax, %eax // eax == 0 ? 775 jnz 1f // if eax != 0 goto 1 776 ret // return 7771: // deliver exception on current thread 778 DELIVER_PENDING_EXCEPTION 779END_MACRO 780 781MACRO0(RETURN_OR_DELIVER_PENDING_EXCEPTION) 782 cmpl MACRO_LITERAL(0),%fs:THREAD_EXCEPTION_OFFSET // exception field == 0 ? 783 jne 1f // if exception field != 0 goto 1 784 ret // return 7851: // deliver exception on current thread 786 DELIVER_PENDING_EXCEPTION 787END_MACRO 788 789// Generate the allocation entrypoints for each allocator. 790// TODO: use arch/quick_alloc_entrypoints.S. Currently we don't as we need to use concatenation 791// macros to work around differences between OS/X's as and binutils as (OS/X lacks named arguments 792// to macros and the VAR macro won't concatenate arguments properly), this also breaks having 793// multi-line macros that use each other (hence using 1 macro per newline below). 794#define GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(c_suffix, cxx_suffix) \ 795 TWO_ARG_DOWNCALL art_quick_alloc_object ## c_suffix, artAllocObjectFromCode ## cxx_suffix, RETURN_IF_RESULT_IS_NON_ZERO 796#define GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(c_suffix, cxx_suffix) \ 797 TWO_ARG_DOWNCALL art_quick_alloc_object_resolved ## c_suffix, artAllocObjectFromCodeResolved ## cxx_suffix, RETURN_IF_RESULT_IS_NON_ZERO 798#define GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(c_suffix, cxx_suffix) \ 799 TWO_ARG_DOWNCALL art_quick_alloc_object_initialized ## c_suffix, artAllocObjectFromCodeInitialized ## cxx_suffix, RETURN_IF_RESULT_IS_NON_ZERO 800#define GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_WITH_ACCESS_CHECK(c_suffix, cxx_suffix) \ 801 TWO_ARG_DOWNCALL art_quick_alloc_object_with_access_check ## c_suffix, artAllocObjectFromCodeWithAccessCheck ## cxx_suffix, RETURN_IF_RESULT_IS_NON_ZERO 802#define GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY(c_suffix, cxx_suffix) \ 803 THREE_ARG_DOWNCALL art_quick_alloc_array ## c_suffix, artAllocArrayFromCode ## cxx_suffix, RETURN_IF_RESULT_IS_NON_ZERO 804#define GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_RESOLVED(c_suffix, cxx_suffix) \ 805 THREE_ARG_DOWNCALL art_quick_alloc_array_resolved ## c_suffix, artAllocArrayFromCodeResolved ## cxx_suffix, RETURN_IF_RESULT_IS_NON_ZERO 806#define GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_WITH_ACCESS_CHECK(c_suffix, cxx_suffix) \ 807 THREE_ARG_DOWNCALL art_quick_alloc_array_with_access_check ## c_suffix, artAllocArrayFromCodeWithAccessCheck ## cxx_suffix, RETURN_IF_RESULT_IS_NON_ZERO 808#define GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY(c_suffix, cxx_suffix) \ 809 THREE_ARG_DOWNCALL art_quick_check_and_alloc_array ## c_suffix, artCheckAndAllocArrayFromCode ## cxx_suffix, RETURN_IF_RESULT_IS_NON_ZERO 810#define GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY_WITH_ACCESS_CHECK(c_suffix, cxx_suffix) \ 811 THREE_ARG_DOWNCALL art_quick_check_and_alloc_array_with_access_check ## c_suffix, artCheckAndAllocArrayFromCodeWithAccessCheck ## cxx_suffix, RETURN_IF_RESULT_IS_NON_ZERO 812#define GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_BYTES(c_suffix, cxx_suffix) \ 813 FOUR_ARG_DOWNCALL art_quick_alloc_string_from_bytes ## c_suffix, artAllocStringFromBytesFromCode ## cxx_suffix, RETURN_IF_RESULT_IS_NON_ZERO 814#define GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_CHARS(c_suffix, cxx_suffix) \ 815 THREE_ARG_DOWNCALL art_quick_alloc_string_from_chars ## c_suffix, artAllocStringFromCharsFromCode ## cxx_suffix, RETURN_IF_RESULT_IS_NON_ZERO 816#define GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_STRING(c_suffix, cxx_suffix) \ 817 ONE_ARG_DOWNCALL art_quick_alloc_string_from_string ## c_suffix, artAllocStringFromStringFromCode ## cxx_suffix, RETURN_IF_RESULT_IS_NON_ZERO 818 819GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_dlmalloc, DlMalloc) 820GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(_dlmalloc, DlMalloc) 821GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(_dlmalloc, DlMalloc) 822GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_WITH_ACCESS_CHECK(_dlmalloc, DlMalloc) 823GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY(_dlmalloc, DlMalloc) 824GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_RESOLVED(_dlmalloc, DlMalloc) 825GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_WITH_ACCESS_CHECK(_dlmalloc, DlMalloc) 826GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY(_dlmalloc, DlMalloc) 827GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY_WITH_ACCESS_CHECK(_dlmalloc, DlMalloc) 828GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_BYTES(_dlmalloc, DlMalloc) 829GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_CHARS(_dlmalloc, DlMalloc) 830GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_STRING(_dlmalloc, DlMalloc) 831 832GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_dlmalloc_instrumented, DlMallocInstrumented) 833GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(_dlmalloc_instrumented, DlMallocInstrumented) 834GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(_dlmalloc_instrumented, DlMallocInstrumented) 835GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_WITH_ACCESS_CHECK(_dlmalloc_instrumented, DlMallocInstrumented) 836GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY(_dlmalloc_instrumented, DlMallocInstrumented) 837GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_RESOLVED(_dlmalloc_instrumented, DlMallocInstrumented) 838GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_WITH_ACCESS_CHECK(_dlmalloc_instrumented, DlMallocInstrumented) 839GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY(_dlmalloc_instrumented, DlMallocInstrumented) 840GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY_WITH_ACCESS_CHECK(_dlmalloc_instrumented, DlMallocInstrumented) 841GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_BYTES(_dlmalloc_instrumented, DlMallocInstrumented) 842GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_CHARS(_dlmalloc_instrumented, DlMallocInstrumented) 843GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_STRING(_dlmalloc_instrumented, DlMallocInstrumented) 844 845GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_rosalloc, RosAlloc) 846GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(_rosalloc, RosAlloc) 847GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(_rosalloc, RosAlloc) 848GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_WITH_ACCESS_CHECK(_rosalloc, RosAlloc) 849GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY(_rosalloc, RosAlloc) 850GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_RESOLVED(_rosalloc, RosAlloc) 851GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_WITH_ACCESS_CHECK(_rosalloc, RosAlloc) 852GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY(_rosalloc, RosAlloc) 853GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY_WITH_ACCESS_CHECK(_rosalloc, RosAlloc) 854GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_BYTES(_rosalloc, RosAlloc) 855GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_CHARS(_rosalloc, RosAlloc) 856GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_STRING(_rosalloc, RosAlloc) 857 858GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_rosalloc_instrumented, RosAllocInstrumented) 859GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(_rosalloc_instrumented, RosAllocInstrumented) 860GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(_rosalloc_instrumented, RosAllocInstrumented) 861GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_WITH_ACCESS_CHECK(_rosalloc_instrumented, RosAllocInstrumented) 862GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY(_rosalloc_instrumented, RosAllocInstrumented) 863GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_RESOLVED(_rosalloc_instrumented, RosAllocInstrumented) 864GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_WITH_ACCESS_CHECK(_rosalloc_instrumented, RosAllocInstrumented) 865GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY(_rosalloc_instrumented, RosAllocInstrumented) 866GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY_WITH_ACCESS_CHECK(_rosalloc_instrumented, RosAllocInstrumented) 867GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_BYTES(_rosalloc_instrumented, RosAllocInstrumented) 868GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_CHARS(_rosalloc_instrumented, RosAllocInstrumented) 869GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_STRING(_rosalloc_instrumented, RosAllocInstrumented) 870 871GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_bump_pointer, BumpPointer) 872GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(_bump_pointer, BumpPointer) 873GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(_bump_pointer, BumpPointer) 874GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_WITH_ACCESS_CHECK(_bump_pointer, BumpPointer) 875GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY(_bump_pointer, BumpPointer) 876GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_RESOLVED(_bump_pointer, BumpPointer) 877GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_WITH_ACCESS_CHECK(_bump_pointer, BumpPointer) 878GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY(_bump_pointer, BumpPointer) 879GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY_WITH_ACCESS_CHECK(_bump_pointer, BumpPointer) 880GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_BYTES(_bump_pointer, BumpPointer) 881GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_CHARS(_bump_pointer, BumpPointer) 882GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_STRING(_bump_pointer, BumpPointer) 883 884GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_bump_pointer_instrumented, BumpPointerInstrumented) 885GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(_bump_pointer_instrumented, BumpPointerInstrumented) 886GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(_bump_pointer_instrumented, BumpPointerInstrumented) 887GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_WITH_ACCESS_CHECK(_bump_pointer_instrumented, BumpPointerInstrumented) 888GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY(_bump_pointer_instrumented, BumpPointerInstrumented) 889GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_RESOLVED(_bump_pointer_instrumented, BumpPointerInstrumented) 890GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_WITH_ACCESS_CHECK(_bump_pointer_instrumented, BumpPointerInstrumented) 891GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY(_bump_pointer_instrumented, BumpPointerInstrumented) 892GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY_WITH_ACCESS_CHECK(_bump_pointer_instrumented, BumpPointerInstrumented) 893GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_BYTES(_bump_pointer_instrumented, BumpPointerInstrumented) 894GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_CHARS(_bump_pointer_instrumented, BumpPointerInstrumented) 895GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_STRING(_bump_pointer_instrumented, BumpPointerInstrumented) 896 897GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_tlab, TLAB) 898GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(_tlab, TLAB) 899GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(_tlab, TLAB) 900GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_WITH_ACCESS_CHECK(_tlab, TLAB) 901GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY(_tlab, TLAB) 902GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_RESOLVED(_tlab, TLAB) 903GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_WITH_ACCESS_CHECK(_tlab, TLAB) 904GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY(_tlab, TLAB) 905GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY_WITH_ACCESS_CHECK(_tlab, TLAB) 906GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_BYTES(_tlab, TLAB) 907GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_CHARS(_tlab, TLAB) 908GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_STRING(_tlab, TLAB) 909 910GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_tlab_instrumented, TLABInstrumented) 911GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(_tlab_instrumented, TLABInstrumented) 912GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(_tlab_instrumented, TLABInstrumented) 913GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_WITH_ACCESS_CHECK(_tlab_instrumented, TLABInstrumented) 914GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY(_tlab_instrumented, TLABInstrumented) 915GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_RESOLVED(_tlab_instrumented, TLABInstrumented) 916GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_WITH_ACCESS_CHECK(_tlab_instrumented, TLABInstrumented) 917GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY(_tlab_instrumented, TLABInstrumented) 918GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY_WITH_ACCESS_CHECK(_tlab_instrumented, TLABInstrumented) 919GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_BYTES(_tlab_instrumented, TLABInstrumented) 920GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_CHARS(_tlab_instrumented, TLABInstrumented) 921GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_STRING(_tlab_instrumented, TLABInstrumented) 922 923GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_region, Region) 924GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(_region, Region) 925GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(_region, Region) 926GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_WITH_ACCESS_CHECK(_region, Region) 927GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY(_region, Region) 928GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_RESOLVED(_region, Region) 929GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_WITH_ACCESS_CHECK(_region, Region) 930GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY(_region, Region) 931GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY_WITH_ACCESS_CHECK(_region, Region) 932GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_BYTES(_region, Region) 933GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_CHARS(_region, Region) 934GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_STRING(_region, Region) 935 936GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_region_instrumented, RegionInstrumented) 937GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(_region_instrumented, RegionInstrumented) 938GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(_region_instrumented, RegionInstrumented) 939GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_WITH_ACCESS_CHECK(_region_instrumented, RegionInstrumented) 940GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY(_region_instrumented, RegionInstrumented) 941GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_RESOLVED(_region_instrumented, RegionInstrumented) 942GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_WITH_ACCESS_CHECK(_region_instrumented, RegionInstrumented) 943GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY(_region_instrumented, RegionInstrumented) 944GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY_WITH_ACCESS_CHECK(_region_instrumented, RegionInstrumented) 945GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_BYTES(_region_instrumented, RegionInstrumented) 946GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_CHARS(_region_instrumented, RegionInstrumented) 947GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_STRING(_region_instrumented, RegionInstrumented) 948 949GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_region_tlab, RegionTLAB) 950GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(_region_tlab, RegionTLAB) 951GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(_region_tlab, RegionTLAB) 952GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_WITH_ACCESS_CHECK(_region_tlab, RegionTLAB) 953GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY(_region_tlab, RegionTLAB) 954GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_RESOLVED(_region_tlab, RegionTLAB) 955GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_WITH_ACCESS_CHECK(_region_tlab, RegionTLAB) 956GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY(_region_tlab, RegionTLAB) 957GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY_WITH_ACCESS_CHECK(_region_tlab, RegionTLAB) 958GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_BYTES(_region_tlab, RegionTLAB) 959GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_CHARS(_region_tlab, RegionTLAB) 960GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_STRING(_region_tlab, RegionTLAB) 961 962GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_region_tlab_instrumented, RegionTLABInstrumented) 963GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(_region_tlab_instrumented, RegionTLABInstrumented) 964GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(_region_tlab_instrumented, RegionTLABInstrumented) 965GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_WITH_ACCESS_CHECK(_region_tlab_instrumented, RegionTLABInstrumented) 966GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY(_region_tlab_instrumented, RegionTLABInstrumented) 967GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_RESOLVED(_region_tlab_instrumented, RegionTLABInstrumented) 968GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_WITH_ACCESS_CHECK(_region_tlab_instrumented, RegionTLABInstrumented) 969GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY(_region_tlab_instrumented, RegionTLABInstrumented) 970GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY_WITH_ACCESS_CHECK(_region_tlab_instrumented, RegionTLABInstrumented) 971GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_BYTES(_region_tlab_instrumented, RegionTLABInstrumented) 972GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_CHARS(_region_tlab_instrumented, RegionTLABInstrumented) 973GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_STRING(_region_tlab_instrumented, RegionTLABInstrumented) 974 975ONE_ARG_DOWNCALL art_quick_resolve_string, artResolveStringFromCode, RETURN_IF_RESULT_IS_NON_ZERO 976ONE_ARG_DOWNCALL art_quick_initialize_static_storage, artInitializeStaticStorageFromCode, RETURN_IF_RESULT_IS_NON_ZERO 977ONE_ARG_DOWNCALL art_quick_initialize_type, artInitializeTypeFromCode, RETURN_IF_RESULT_IS_NON_ZERO 978ONE_ARG_DOWNCALL art_quick_initialize_type_and_verify_access, artInitializeTypeAndVerifyAccessFromCode, RETURN_IF_RESULT_IS_NON_ZERO 979 980TWO_ARG_REF_DOWNCALL art_quick_handle_fill_data, artHandleFillArrayDataFromCode, RETURN_IF_EAX_ZERO 981 982DEFINE_FUNCTION art_quick_lock_object 983 testl %eax, %eax // null check object/eax 984 jz .Lslow_lock 985.Lretry_lock: 986 movl MIRROR_OBJECT_LOCK_WORD_OFFSET(%eax), %ecx // ecx := lock word 987 test LITERAL(LOCK_WORD_STATE_MASK), %ecx // test the 2 high bits. 988 jne .Lslow_lock // slow path if either of the two high bits are set. 989 movl %ecx, %edx // save lock word (edx) to keep read barrier bits. 990 andl LITERAL(LOCK_WORD_READ_BARRIER_STATE_MASK_TOGGLED), %ecx // zero the read barrier bits. 991 test %ecx, %ecx 992 jnz .Lalready_thin // lock word contains a thin lock 993 // unlocked case - edx: original lock word, eax: obj. 994 movl %eax, %ecx // remember object in case of retry 995 movl %edx, %eax // eax: lock word zero except for read barrier bits. 996 movl %fs:THREAD_ID_OFFSET, %edx // load thread id. 997 or %eax, %edx // edx: thread id with count of 0 + read barrier bits. 998 lock cmpxchg %edx, MIRROR_OBJECT_LOCK_WORD_OFFSET(%ecx) // eax: old val, edx: new val. 999 jnz .Llock_cmpxchg_fail // cmpxchg failed retry 1000 ret 1001.Lalready_thin: // edx: lock word (with high 2 bits zero and original rb bits), eax: obj. 1002 movl %fs:THREAD_ID_OFFSET, %ecx // ecx := thread id 1003 cmpw %cx, %dx // do we hold the lock already? 1004 jne .Lslow_lock 1005 movl %edx, %ecx // copy the lock word to check count overflow. 1006 andl LITERAL(LOCK_WORD_READ_BARRIER_STATE_MASK_TOGGLED), %ecx // zero the read barrier bits. 1007 addl LITERAL(LOCK_WORD_THIN_LOCK_COUNT_ONE), %ecx // increment recursion count for overflow check. 1008 test LITERAL(LOCK_WORD_READ_BARRIER_STATE_MASK), %ecx // overflowed if either of the upper two bits (28-29) are set. 1009 jne .Lslow_lock // count overflowed so go slow 1010 movl %eax, %ecx // save obj to use eax for cmpxchg. 1011 movl %edx, %eax // copy the lock word as the old val for cmpxchg. 1012 addl LITERAL(LOCK_WORD_THIN_LOCK_COUNT_ONE), %edx // increment recursion count again for real. 1013 // update lockword, cmpxchg necessary for read barrier bits. 1014 lock cmpxchg %edx, MIRROR_OBJECT_LOCK_WORD_OFFSET(%ecx) // eax: old val, edx: new val. 1015 jnz .Llock_cmpxchg_fail // cmpxchg failed retry 1016 ret 1017.Llock_cmpxchg_fail: 1018 movl %ecx, %eax // restore eax 1019 jmp .Lretry_lock 1020.Lslow_lock: 1021 SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC 1022 // Outgoing argument set up 1023 subl LITERAL(8), %esp // alignment padding 1024 CFI_ADJUST_CFA_OFFSET(8) 1025 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 1026 CFI_ADJUST_CFA_OFFSET(4) 1027 PUSH eax // pass object 1028 call SYMBOL(artLockObjectFromCode) // artLockObjectFromCode(object, Thread*) 1029 addl LITERAL(16), %esp // pop arguments 1030 CFI_ADJUST_CFA_OFFSET(-16) 1031 RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 1032 RETURN_IF_EAX_ZERO 1033END_FUNCTION art_quick_lock_object 1034 1035DEFINE_FUNCTION art_quick_unlock_object 1036 testl %eax, %eax // null check object/eax 1037 jz .Lslow_unlock 1038.Lretry_unlock: 1039 movl MIRROR_OBJECT_LOCK_WORD_OFFSET(%eax), %ecx // ecx := lock word 1040 movl %fs:THREAD_ID_OFFSET, %edx // edx := thread id 1041 test LITERAL(LOCK_WORD_STATE_MASK), %ecx 1042 jnz .Lslow_unlock // lock word contains a monitor 1043 cmpw %cx, %dx // does the thread id match? 1044 jne .Lslow_unlock 1045 movl %ecx, %edx // copy the lock word to detect new count of 0. 1046 andl LITERAL(LOCK_WORD_READ_BARRIER_STATE_MASK_TOGGLED), %edx // zero the read barrier bits. 1047 cmpl LITERAL(LOCK_WORD_THIN_LOCK_COUNT_ONE), %edx 1048 jae .Lrecursive_thin_unlock 1049 // update lockword, cmpxchg necessary for read barrier bits. 1050 movl %eax, %edx // edx: obj 1051 movl %ecx, %eax // eax: old lock word. 1052 andl LITERAL(LOCK_WORD_READ_BARRIER_STATE_MASK), %ecx // ecx: new lock word zero except original rb bits. 1053#ifndef USE_READ_BARRIER 1054 movl %ecx, MIRROR_OBJECT_LOCK_WORD_OFFSET(%edx) 1055#else 1056 lock cmpxchg %ecx, MIRROR_OBJECT_LOCK_WORD_OFFSET(%edx) // eax: old val, ecx: new val. 1057 jnz .Lunlock_cmpxchg_fail // cmpxchg failed retry 1058#endif 1059 ret 1060.Lrecursive_thin_unlock: // ecx: original lock word, eax: obj 1061 // update lockword, cmpxchg necessary for read barrier bits. 1062 movl %eax, %edx // edx: obj 1063 movl %ecx, %eax // eax: old lock word. 1064 subl LITERAL(LOCK_WORD_THIN_LOCK_COUNT_ONE), %ecx // ecx: new lock word with decremented count. 1065#ifndef USE_READ_BARRIER 1066 mov %ecx, MIRROR_OBJECT_LOCK_WORD_OFFSET(%edx) 1067#else 1068 lock cmpxchg %ecx, MIRROR_OBJECT_LOCK_WORD_OFFSET(%edx) // eax: old val, ecx: new val. 1069 jnz .Lunlock_cmpxchg_fail // cmpxchg failed retry 1070#endif 1071 ret 1072.Lunlock_cmpxchg_fail: // edx: obj 1073 movl %edx, %eax // restore eax 1074 jmp .Lretry_unlock 1075.Lslow_unlock: 1076 SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC 1077 // Outgoing argument set up 1078 subl LITERAL(8), %esp // alignment padding 1079 CFI_ADJUST_CFA_OFFSET(8) 1080 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 1081 CFI_ADJUST_CFA_OFFSET(4) 1082 PUSH eax // pass object 1083 call SYMBOL(artUnlockObjectFromCode) // artUnlockObjectFromCode(object, Thread*) 1084 addl LITERAL(16), %esp // pop arguments 1085 CFI_ADJUST_CFA_OFFSET(-16) 1086 RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 1087 RETURN_IF_EAX_ZERO 1088END_FUNCTION art_quick_unlock_object 1089 1090DEFINE_FUNCTION art_quick_is_assignable 1091 PUSH eax // alignment padding 1092 PUSH ecx // pass arg2 - obj->klass 1093 PUSH eax // pass arg1 - checked class 1094 call SYMBOL(artIsAssignableFromCode) // (Class* klass, Class* ref_klass) 1095 addl LITERAL(12), %esp // pop arguments 1096 CFI_ADJUST_CFA_OFFSET(-12) 1097 ret 1098END_FUNCTION art_quick_is_assignable 1099 1100DEFINE_FUNCTION art_quick_check_cast 1101 PUSH eax // alignment padding 1102 PUSH ecx // pass arg2 - obj->klass 1103 PUSH eax // pass arg1 - checked class 1104 call SYMBOL(artIsAssignableFromCode) // (Class* klass, Class* ref_klass) 1105 testl %eax, %eax 1106 jz 1f // jump forward if not assignable 1107 addl LITERAL(12), %esp // pop arguments 1108 CFI_ADJUST_CFA_OFFSET(-12) 1109 ret 1110 1111 CFI_ADJUST_CFA_OFFSET(12) // Reset unwind info so following code unwinds. 11121: 1113 POP eax // pop arguments 1114 POP ecx 1115 addl LITERAL(4), %esp 1116 CFI_ADJUST_CFA_OFFSET(-4) 1117 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME ebx, ebx // save all registers as basis for long jump context 1118 // Outgoing argument set up 1119 PUSH eax // alignment padding 1120 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 1121 CFI_ADJUST_CFA_OFFSET(4) 1122 PUSH ecx // pass arg2 1123 PUSH eax // pass arg1 1124 call SYMBOL(artThrowClassCastException) // (Class* a, Class* b, Thread*) 1125 int3 // unreached 1126END_FUNCTION art_quick_check_cast 1127 1128 /* 1129 * Entry from managed code for array put operations of objects where the value being stored 1130 * needs to be checked for compatibility. 1131 * eax = array, ecx = index, edx = value 1132 */ 1133DEFINE_FUNCTION art_quick_aput_obj_with_null_and_bound_check 1134 testl %eax, %eax 1135 jnz SYMBOL(art_quick_aput_obj_with_bound_check) 1136 jmp SYMBOL(art_quick_throw_null_pointer_exception) 1137END_FUNCTION art_quick_aput_obj_with_null_and_bound_check 1138 1139DEFINE_FUNCTION art_quick_aput_obj_with_bound_check 1140 movl MIRROR_ARRAY_LENGTH_OFFSET(%eax), %ebx 1141 cmpl %ebx, %ecx 1142 jb SYMBOL(art_quick_aput_obj) 1143 mov %ecx, %eax 1144 mov %ebx, %ecx 1145 jmp SYMBOL(art_quick_throw_array_bounds) 1146END_FUNCTION art_quick_aput_obj_with_bound_check 1147 1148DEFINE_FUNCTION art_quick_aput_obj 1149 test %edx, %edx // store of null 1150 jz .Ldo_aput_null 1151 movl MIRROR_OBJECT_CLASS_OFFSET(%eax), %ebx 1152 movl MIRROR_CLASS_COMPONENT_TYPE_OFFSET(%ebx), %ebx 1153 // value's type == array's component type - trivial assignability 1154 cmpl MIRROR_OBJECT_CLASS_OFFSET(%edx), %ebx 1155 jne .Lcheck_assignability 1156.Ldo_aput: 1157 movl %edx, MIRROR_OBJECT_ARRAY_DATA_OFFSET(%eax, %ecx, 4) 1158 movl %fs:THREAD_CARD_TABLE_OFFSET, %edx 1159 shrl LITERAL(7), %eax 1160 movb %dl, (%edx, %eax) 1161 ret 1162.Ldo_aput_null: 1163 movl %edx, MIRROR_OBJECT_ARRAY_DATA_OFFSET(%eax, %ecx, 4) 1164 ret 1165.Lcheck_assignability: 1166 PUSH eax // save arguments 1167 PUSH ecx 1168 PUSH edx 1169 subl LITERAL(8), %esp // alignment padding 1170 CFI_ADJUST_CFA_OFFSET(8) 1171 pushl MIRROR_OBJECT_CLASS_OFFSET(%edx) // pass arg2 - type of the value to be stored 1172 CFI_ADJUST_CFA_OFFSET(4) 1173 PUSH ebx // pass arg1 - component type of the array 1174 call SYMBOL(artIsAssignableFromCode) // (Class* a, Class* b) 1175 addl LITERAL(16), %esp // pop arguments 1176 CFI_ADJUST_CFA_OFFSET(-16) 1177 testl %eax, %eax 1178 jz .Lthrow_array_store_exception 1179 POP edx 1180 POP ecx 1181 POP eax 1182 movl %edx, MIRROR_OBJECT_ARRAY_DATA_OFFSET(%eax, %ecx, 4) // do the aput 1183 movl %fs:THREAD_CARD_TABLE_OFFSET, %edx 1184 shrl LITERAL(7), %eax 1185 movb %dl, (%edx, %eax) 1186 ret 1187 CFI_ADJUST_CFA_OFFSET(12) // 3 POP after the jz for unwinding. 1188.Lthrow_array_store_exception: 1189 POP edx 1190 POP ecx 1191 POP eax 1192 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME ebx, ebx // save all registers as basis for long jump context 1193 // Outgoing argument set up 1194 PUSH eax // alignment padding 1195 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 1196 CFI_ADJUST_CFA_OFFSET(4) 1197 PUSH edx // pass arg2 - value 1198 PUSH eax // pass arg1 - array 1199 call SYMBOL(artThrowArrayStoreException) // (array, value, Thread*) 1200 int3 // unreached 1201END_FUNCTION art_quick_aput_obj 1202 1203DEFINE_FUNCTION art_quick_memcpy 1204 SETUP_GOT_NOSAVE ebx // clobbers EBX 1205 PUSH edx // pass arg3 1206 PUSH ecx // pass arg2 1207 PUSH eax // pass arg1 1208 call PLT_SYMBOL(memcpy) // (void*, const void*, size_t) 1209 addl LITERAL(12), %esp // pop arguments 1210 CFI_ADJUST_CFA_OFFSET(-12) 1211 ret 1212END_FUNCTION art_quick_memcpy 1213 1214NO_ARG_DOWNCALL art_quick_test_suspend, artTestSuspendFromCode, ret 1215 1216DEFINE_FUNCTION art_quick_d2l 1217 subl LITERAL(12), %esp // alignment padding, room for argument 1218 CFI_ADJUST_CFA_OFFSET(12) 1219 movsd %xmm0, 0(%esp) // arg a 1220 call SYMBOL(art_d2l) // (jdouble a) 1221 addl LITERAL(12), %esp // pop arguments 1222 CFI_ADJUST_CFA_OFFSET(-12) 1223 ret 1224END_FUNCTION art_quick_d2l 1225 1226DEFINE_FUNCTION art_quick_f2l 1227 subl LITERAL(12), %esp // alignment padding 1228 CFI_ADJUST_CFA_OFFSET(12) 1229 movss %xmm0, 0(%esp) // arg a 1230 call SYMBOL(art_f2l) // (jfloat a) 1231 addl LITERAL(12), %esp // pop arguments 1232 CFI_ADJUST_CFA_OFFSET(-12) 1233 ret 1234END_FUNCTION art_quick_f2l 1235 1236DEFINE_FUNCTION art_quick_ldiv 1237 subl LITERAL(12), %esp // alignment padding 1238 CFI_ADJUST_CFA_OFFSET(12) 1239 PUSH ebx // pass arg4 b.hi 1240 PUSH edx // pass arg3 b.lo 1241 PUSH ecx // pass arg2 a.hi 1242 PUSH eax // pass arg1 a.lo 1243 call SYMBOL(artLdiv) // (jlong a, jlong b) 1244 addl LITERAL(28), %esp // pop arguments 1245 CFI_ADJUST_CFA_OFFSET(-28) 1246 ret 1247END_FUNCTION art_quick_ldiv 1248 1249DEFINE_FUNCTION art_quick_lmod 1250 subl LITERAL(12), %esp // alignment padding 1251 CFI_ADJUST_CFA_OFFSET(12) 1252 PUSH ebx // pass arg4 b.hi 1253 PUSH edx // pass arg3 b.lo 1254 PUSH ecx // pass arg2 a.hi 1255 PUSH eax // pass arg1 a.lo 1256 call SYMBOL(artLmod) // (jlong a, jlong b) 1257 addl LITERAL(28), %esp // pop arguments 1258 CFI_ADJUST_CFA_OFFSET(-28) 1259 ret 1260END_FUNCTION art_quick_lmod 1261 1262DEFINE_FUNCTION art_quick_lmul 1263 imul %eax, %ebx // ebx = a.lo(eax) * b.hi(ebx) 1264 imul %edx, %ecx // ecx = b.lo(edx) * a.hi(ecx) 1265 mul %edx // edx:eax = a.lo(eax) * b.lo(edx) 1266 add %ebx, %ecx 1267 add %ecx, %edx // edx += (a.lo * b.hi) + (b.lo * a.hi) 1268 ret 1269END_FUNCTION art_quick_lmul 1270 1271DEFINE_FUNCTION art_quick_lshl 1272 // ecx:eax << edx 1273 xchg %edx, %ecx 1274 shld %cl,%eax,%edx 1275 shl %cl,%eax 1276 test LITERAL(32), %cl 1277 jz 1f 1278 mov %eax, %edx 1279 xor %eax, %eax 12801: 1281 ret 1282END_FUNCTION art_quick_lshl 1283 1284DEFINE_FUNCTION art_quick_lshr 1285 // ecx:eax >> edx 1286 xchg %edx, %ecx 1287 shrd %cl,%edx,%eax 1288 sar %cl,%edx 1289 test LITERAL(32),%cl 1290 jz 1f 1291 mov %edx, %eax 1292 sar LITERAL(31), %edx 12931: 1294 ret 1295END_FUNCTION art_quick_lshr 1296 1297DEFINE_FUNCTION art_quick_lushr 1298 // ecx:eax >>> edx 1299 xchg %edx, %ecx 1300 shrd %cl,%edx,%eax 1301 shr %cl,%edx 1302 test LITERAL(32),%cl 1303 jz 1f 1304 mov %edx, %eax 1305 xor %edx, %edx 13061: 1307 ret 1308END_FUNCTION art_quick_lushr 1309 1310ONE_ARG_REF_DOWNCALL art_quick_get_boolean_static, artGetBooleanStaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1311ONE_ARG_REF_DOWNCALL art_quick_get_byte_static, artGetByteStaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1312ONE_ARG_REF_DOWNCALL art_quick_get_char_static, artGetCharStaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1313ONE_ARG_REF_DOWNCALL art_quick_get_short_static, artGetShortStaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1314ONE_ARG_REF_DOWNCALL art_quick_get32_static, artGet32StaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1315ONE_ARG_REF_DOWNCALL art_quick_get64_static, artGet64StaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1316ONE_ARG_REF_DOWNCALL art_quick_get_obj_static, artGetObjStaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1317 1318TWO_ARG_REF_DOWNCALL art_quick_get_boolean_instance, artGetBooleanInstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1319TWO_ARG_REF_DOWNCALL art_quick_get_byte_instance, artGetByteInstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1320TWO_ARG_REF_DOWNCALL art_quick_get_char_instance, artGetCharInstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1321TWO_ARG_REF_DOWNCALL art_quick_get_short_instance, artGetShortInstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1322TWO_ARG_REF_DOWNCALL art_quick_get32_instance, artGet32InstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1323TWO_ARG_REF_DOWNCALL art_quick_get64_instance, artGet64InstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1324TWO_ARG_REF_DOWNCALL art_quick_get_obj_instance, artGetObjInstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1325 1326TWO_ARG_REF_DOWNCALL art_quick_set8_static, artSet8StaticFromCode, RETURN_IF_EAX_ZERO 1327TWO_ARG_REF_DOWNCALL art_quick_set16_static, artSet16StaticFromCode, RETURN_IF_EAX_ZERO 1328TWO_ARG_REF_DOWNCALL art_quick_set32_static, artSet32StaticFromCode, RETURN_IF_EAX_ZERO 1329TWO_ARG_REF_DOWNCALL art_quick_set_obj_static, artSetObjStaticFromCode, RETURN_IF_EAX_ZERO 1330 1331THREE_ARG_REF_DOWNCALL art_quick_set8_instance, artSet8InstanceFromCode, RETURN_IF_EAX_ZERO 1332THREE_ARG_REF_DOWNCALL art_quick_set16_instance, artSet16InstanceFromCode, RETURN_IF_EAX_ZERO 1333THREE_ARG_REF_DOWNCALL art_quick_set32_instance, artSet32InstanceFromCode, RETURN_IF_EAX_ZERO 1334THREE_ARG_REF_DOWNCALL art_quick_set_obj_instance, artSetObjInstanceFromCode, RETURN_IF_EAX_ZERO 1335 1336// Call artSet64InstanceFromCode with 4 word size arguments and the referrer. 1337DEFINE_FUNCTION art_quick_set64_instance 1338 movd %ebx, %xmm0 1339 SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC 1340 movd %xmm0, %ebx 1341 // Outgoing argument set up 1342 subl LITERAL(8), %esp // alignment padding 1343 CFI_ADJUST_CFA_OFFSET(8) 1344 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 1345 CFI_ADJUST_CFA_OFFSET(4) 1346 pushl (FRAME_SIZE_REFS_ONLY_CALLEE_SAVE+12)(%esp) // pass referrer 1347 CFI_ADJUST_CFA_OFFSET(4) 1348 PUSH ebx // pass high half of new_val 1349 PUSH edx // pass low half of new_val 1350 PUSH ecx // pass object 1351 PUSH eax // pass field_idx 1352 call SYMBOL(artSet64InstanceFromCode) // (field_idx, Object*, new_val, referrer, Thread*) 1353 addl LITERAL(32), %esp // pop arguments 1354 CFI_ADJUST_CFA_OFFSET(-32) 1355 RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 1356 RETURN_IF_EAX_ZERO // return or deliver exception 1357END_FUNCTION art_quick_set64_instance 1358 1359// Call artSet64StaticFromCode with 3 word size arguments plus with the referrer in the 2nd position 1360// so that new_val is aligned on even registers were we passing arguments in registers. 1361DEFINE_FUNCTION art_quick_set64_static 1362 SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC 1363 mov FRAME_SIZE_REFS_ONLY_CALLEE_SAVE(%esp), %ebx // get referrer 1364 subl LITERAL(12), %esp // alignment padding 1365 CFI_ADJUST_CFA_OFFSET(12) 1366 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 1367 CFI_ADJUST_CFA_OFFSET(4) 1368 PUSH edx // pass high half of new_val 1369 PUSH ecx // pass low half of new_val 1370 PUSH ebx // pass referrer 1371 PUSH eax // pass field_idx 1372 call SYMBOL(artSet64StaticFromCode) // (field_idx, referrer, new_val, Thread*) 1373 addl LITERAL(32), %esp // pop arguments 1374 CFI_ADJUST_CFA_OFFSET(-32) 1375 RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 1376 RETURN_IF_EAX_ZERO // return or deliver exception 1377END_FUNCTION art_quick_set64_static 1378 1379DEFINE_FUNCTION art_quick_proxy_invoke_handler 1380 SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME_WITH_METHOD_IN_EAX 1381 PUSH esp // pass SP 1382 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 1383 CFI_ADJUST_CFA_OFFSET(4) 1384 PUSH ecx // pass receiver 1385 PUSH eax // pass proxy method 1386 call SYMBOL(artQuickProxyInvokeHandler) // (proxy method, receiver, Thread*, SP) 1387 movd %eax, %xmm0 // place return value also into floating point return value 1388 movd %edx, %xmm1 1389 punpckldq %xmm1, %xmm0 1390 addl LITERAL(16 + FRAME_SIZE_REFS_AND_ARGS_CALLEE_SAVE - FRAME_SIZE_REFS_ONLY_CALLEE_SAVE), %esp 1391 CFI_ADJUST_CFA_OFFSET(-(16 + FRAME_SIZE_REFS_AND_ARGS_CALLEE_SAVE - FRAME_SIZE_REFS_ONLY_CALLEE_SAVE)) 1392 RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME 1393 RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception 1394END_FUNCTION art_quick_proxy_invoke_handler 1395 1396 /* 1397 * Called to resolve an imt conflict. xmm0 is a hidden argument that holds the target method's 1398 * dex method index. 1399 */ 1400DEFINE_FUNCTION art_quick_imt_conflict_trampoline 1401 PUSH ecx 1402 movl 8(%esp), %eax // load caller Method* 1403 movl ART_METHOD_DEX_CACHE_METHODS_OFFSET(%eax), %eax // load dex_cache_resolved_methods 1404 movd %xmm7, %ecx // get target method index stored in xmm0 1405 movl MIRROR_OBJECT_ARRAY_DATA_OFFSET(%eax, %ecx, 4), %eax // load the target method 1406 POP ecx 1407 jmp SYMBOL(art_quick_invoke_interface_trampoline) 1408END_FUNCTION art_quick_imt_conflict_trampoline 1409 1410DEFINE_FUNCTION art_quick_resolution_trampoline 1411 SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME ebx, ebx 1412 movl %esp, %edi 1413 PUSH EDI // pass SP. do not just PUSH ESP; that messes up unwinding 1414 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 1415 CFI_ADJUST_CFA_OFFSET(4) 1416 PUSH ecx // pass receiver 1417 PUSH eax // pass method 1418 call SYMBOL(artQuickResolutionTrampoline) // (Method* called, receiver, Thread*, SP) 1419 movl %eax, %edi // remember code pointer in EDI 1420 addl LITERAL(16), %esp // pop arguments 1421 CFI_ADJUST_CFA_OFFSET(-16) 1422 test %eax, %eax // if code pointer is null goto deliver pending exception 1423 jz 1f 1424 RESTORE_REFS_AND_ARGS_CALLEE_SAVE_FRAME_AND_JUMP 14251: 1426 RESTORE_REFS_AND_ARGS_CALLEE_SAVE_FRAME 1427 DELIVER_PENDING_EXCEPTION 1428END_FUNCTION art_quick_resolution_trampoline 1429 1430DEFINE_FUNCTION art_quick_generic_jni_trampoline 1431 SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME_WITH_METHOD_IN_EAX 1432 movl %esp, %ebp // save SP at callee-save frame 1433 CFI_DEF_CFA_REGISTER(ebp) 1434 subl LITERAL(5120), %esp 1435 // prepare for artQuickGenericJniTrampoline call 1436 // (Thread*, SP) 1437 // (esp) 4(esp) <= C calling convention 1438 // fs:... ebp <= where they are 1439 1440 subl LITERAL(8), %esp // Padding for 16B alignment. 1441 pushl %ebp // Pass SP (to ArtMethod). 1442 pushl %fs:THREAD_SELF_OFFSET // Pass Thread::Current(). 1443 call SYMBOL(artQuickGenericJniTrampoline) // (Thread*, sp) 1444 1445 // The C call will have registered the complete save-frame on success. 1446 // The result of the call is: 1447 // eax: pointer to native code, 0 on error. 1448 // edx: pointer to the bottom of the used area of the alloca, can restore stack till there. 1449 1450 // Check for error = 0. 1451 test %eax, %eax 1452 jz .Lexception_in_native 1453 1454 // Release part of the alloca. 1455 movl %edx, %esp 1456 1457 // On x86 there are no registers passed, so nothing to pop here. 1458 // Native call. 1459 call *%eax 1460 1461 // result sign extension is handled in C code 1462 // prepare for artQuickGenericJniEndTrampoline call 1463 // (Thread*, result, result_f) 1464 // (esp) 4(esp) 12(esp) <= C calling convention 1465 // fs:... eax:edx fp0 <= where they are 1466 1467 subl LITERAL(20), %esp // Padding & pass float result. 1468 fstpl (%esp) 1469 pushl %edx // Pass int result. 1470 pushl %eax 1471 pushl %fs:THREAD_SELF_OFFSET // Pass Thread::Current(). 1472 call SYMBOL(artQuickGenericJniEndTrampoline) 1473 1474 // Pending exceptions possible. 1475 mov %fs:THREAD_EXCEPTION_OFFSET, %ebx 1476 testl %ebx, %ebx 1477 jnz .Lexception_in_native 1478 1479 // Tear down the alloca. 1480 movl %ebp, %esp 1481 CFI_DEF_CFA_REGISTER(esp) 1482 1483 1484 // Tear down the callee-save frame. 1485 // Remove space for FPR args and EAX 1486 addl LITERAL(4 + 4 * 8), %esp 1487 CFI_ADJUST_CFA_OFFSET(-(4 + 4 * 8)) 1488 1489 POP ecx 1490 addl LITERAL(4), %esp // Avoid edx, as it may be part of the result. 1491 CFI_ADJUST_CFA_OFFSET(-4) 1492 POP ebx 1493 POP ebp // Restore callee saves 1494 POP esi 1495 POP edi 1496 // Quick expects the return value to be in xmm0. 1497 movd %eax, %xmm0 1498 movd %edx, %xmm1 1499 punpckldq %xmm1, %xmm0 1500 ret 1501.Lexception_in_native: 1502 movl %fs:THREAD_TOP_QUICK_FRAME_OFFSET, %esp 1503 // Do a call to push a new save-all frame required by the runtime. 1504 call .Lexception_call 1505.Lexception_call: 1506 DELIVER_PENDING_EXCEPTION 1507END_FUNCTION art_quick_generic_jni_trampoline 1508 1509DEFINE_FUNCTION art_quick_to_interpreter_bridge 1510 SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME ebx, ebx // save frame 1511 mov %esp, %edx // remember SP 1512 PUSH eax // alignment padding 1513 PUSH edx // pass SP 1514 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 1515 CFI_ADJUST_CFA_OFFSET(4) 1516 PUSH eax // pass method 1517 call SYMBOL(artQuickToInterpreterBridge) // (method, Thread*, SP) 1518 addl LITERAL(16), %esp // pop arguments 1519 CFI_ADJUST_CFA_OFFSET(-16) 1520 1521 // Return eax:edx in xmm0 also. 1522 movd %eax, %xmm0 1523 movd %edx, %xmm1 1524 punpckldq %xmm1, %xmm0 1525 1526 addl LITERAL(48), %esp // Remove FPRs and EAX, ECX, EDX, EBX. 1527 CFI_ADJUST_CFA_OFFSET(-48) 1528 1529 POP ebp // Restore callee saves 1530 POP esi 1531 POP edi 1532 1533 RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception 1534END_FUNCTION art_quick_to_interpreter_bridge 1535 1536 /* 1537 * Routine that intercepts method calls and returns. 1538 */ 1539DEFINE_FUNCTION art_quick_instrumentation_entry 1540 SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME ebx, edx 1541 PUSH eax // Save eax which will be clobbered by the callee-save method. 1542 subl LITERAL(12), %esp // Align stack. 1543 CFI_ADJUST_CFA_OFFSET(12) 1544 pushl FRAME_SIZE_REFS_AND_ARGS_CALLEE_SAVE-4+16(%esp) // Pass LR. 1545 CFI_ADJUST_CFA_OFFSET(4) 1546 pushl %fs:THREAD_SELF_OFFSET // Pass Thread::Current(). 1547 CFI_ADJUST_CFA_OFFSET(4) 1548 PUSH ecx // Pass receiver. 1549 PUSH eax // Pass Method*. 1550 call SYMBOL(artInstrumentationMethodEntryFromCode) // (Method*, Object*, Thread*, LR) 1551 addl LITERAL(28), %esp // Pop arguments upto saved Method*. 1552 CFI_ADJUST_CFA_OFFSET(-28) 1553 movl 60(%esp), %edi // Restore edi. 1554 movl %eax, 60(%esp) // Place code* over edi, just under return pc. 1555 movl SYMBOL(art_quick_instrumentation_exit)@GOT(%ebx), %ebx 1556 // Place instrumentation exit as return pc. ebx holds the GOT computed on entry. 1557 movl %ebx, 64(%esp) 1558 movl 0(%esp), %eax // Restore eax. 1559 // Restore FPRs (extra 4 bytes of offset due to EAX push at top). 1560 movsd 8(%esp), %xmm0 1561 movsd 16(%esp), %xmm1 1562 movsd 24(%esp), %xmm2 1563 movsd 32(%esp), %xmm3 1564 1565 // Restore GPRs. 1566 movl 40(%esp), %ecx // Restore ecx. 1567 movl 44(%esp), %edx // Restore edx. 1568 movl 48(%esp), %ebx // Restore ebx. 1569 movl 52(%esp), %ebp // Restore ebp. 1570 movl 56(%esp), %esi // Restore esi. 1571 addl LITERAL(60), %esp // Wind stack back upto code*. 1572 CFI_ADJUST_CFA_OFFSET(-60) 1573 ret // Call method (and pop). 1574END_FUNCTION art_quick_instrumentation_entry 1575 1576DEFINE_FUNCTION art_quick_instrumentation_exit 1577 pushl LITERAL(0) // Push a fake return PC as there will be none on the stack. 1578 CFI_ADJUST_CFA_OFFSET(4) 1579 SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx 1580 mov %esp, %ecx // Remember SP 1581 subl LITERAL(8), %esp // Save float return value. 1582 CFI_ADJUST_CFA_OFFSET(8) 1583 movq %xmm0, (%esp) 1584 PUSH edx // Save gpr return value. 1585 PUSH eax 1586 subl LITERAL(16), %esp // Align stack 1587 CFI_ADJUST_CFA_OFFSET(16) 1588 movq %xmm0, (%esp) // Pass float return value. 1589 PUSH edx // Pass gpr return value. 1590 PUSH eax 1591 PUSH ecx // Pass SP. 1592 pushl %fs:THREAD_SELF_OFFSET // Pass Thread::Current. 1593 CFI_ADJUST_CFA_OFFSET(4) 1594 call SYMBOL(artInstrumentationMethodExitFromCode) // (Thread*, SP, gpr_result, fpr_result) 1595 mov %eax, %ecx // Move returned link register. 1596 addl LITERAL(32), %esp // Pop arguments. 1597 CFI_ADJUST_CFA_OFFSET(-32) 1598 movl %edx, %ebx // Move returned link register for deopt 1599 // (ebx is pretending to be our LR). 1600 POP eax // Restore gpr return value. 1601 POP edx 1602 movq (%esp), %xmm0 // Restore fpr return value. 1603 addl LITERAL(8), %esp 1604 CFI_ADJUST_CFA_OFFSET(-8) 1605 RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME 1606 addl LITERAL(4), %esp // Remove fake return pc. 1607 CFI_ADJUST_CFA_OFFSET(-4) 1608 jmp *%ecx // Return. 1609END_FUNCTION art_quick_instrumentation_exit 1610 1611 /* 1612 * Instrumentation has requested that we deoptimize into the interpreter. The deoptimization 1613 * will long jump to the upcall with a special exception of -1. 1614 */ 1615DEFINE_FUNCTION art_quick_deoptimize 1616 PUSH ebx // Entry point for a jump. Fake that we were called. 1617.globl SYMBOL(art_quick_deoptimize_from_compiled_slow_path) // Entry point for real calls 1618 // from compiled slow paths. 1619SYMBOL(art_quick_deoptimize_from_compiled_slow_path): 1620 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME ebx, ebx 1621 subl LITERAL(12), %esp // Align stack. 1622 CFI_ADJUST_CFA_OFFSET(12) 1623 pushl %fs:THREAD_SELF_OFFSET // Pass Thread::Current(). 1624 CFI_ADJUST_CFA_OFFSET(4) 1625 call SYMBOL(artDeoptimize) // artDeoptimize(Thread*) 1626 int3 // Unreachable. 1627END_FUNCTION art_quick_deoptimize 1628 1629 /* 1630 * String's compareTo. 1631 * 1632 * On entry: 1633 * eax: this string object (known non-null) 1634 * ecx: comp string object (known non-null) 1635 */ 1636DEFINE_FUNCTION art_quick_string_compareto 1637 PUSH esi // push callee save reg 1638 PUSH edi // push callee save reg 1639 mov MIRROR_STRING_COUNT_OFFSET(%eax), %edx 1640 mov MIRROR_STRING_COUNT_OFFSET(%ecx), %ebx 1641 lea MIRROR_STRING_VALUE_OFFSET(%eax), %esi 1642 lea MIRROR_STRING_VALUE_OFFSET(%ecx), %edi 1643 /* Calculate min length and count diff */ 1644 mov %edx, %ecx 1645 mov %edx, %eax 1646 subl %ebx, %eax 1647 cmovg %ebx, %ecx 1648 /* 1649 * At this point we have: 1650 * eax: value to return if first part of strings are equal 1651 * ecx: minimum among the lengths of the two strings 1652 * esi: pointer to this string data 1653 * edi: pointer to comp string data 1654 */ 1655 jecxz .Lkeep_length 1656 repe cmpsw // find nonmatching chars in [%esi] and [%edi], up to length %ecx 1657 jne .Lnot_equal 1658.Lkeep_length: 1659 POP edi // pop callee save reg 1660 POP esi // pop callee save reg 1661 ret 1662 .balign 16 1663.Lnot_equal: 1664 movzwl -2(%esi), %eax // get last compared char from this string 1665 movzwl -2(%edi), %ecx // get last compared char from comp string 1666 subl %ecx, %eax // return the difference 1667 POP edi // pop callee save reg 1668 POP esi // pop callee save reg 1669 ret 1670END_FUNCTION art_quick_string_compareto 1671 1672// Return from a nested signal: 1673// Entry: 1674// eax: address of jmp_buf in TLS 1675 1676DEFINE_FUNCTION art_nested_signal_return 1677 SETUP_GOT_NOSAVE ebx // sets %ebx for call into PLT 1678 movl LITERAL(1), %ecx 1679 PUSH ecx // second arg to longjmp (1) 1680 PUSH eax // first arg to longjmp (jmp_buf) 1681 call PLT_SYMBOL(longjmp) 1682 int3 // won't get here. 1683END_FUNCTION art_nested_signal_return 1684 1685 // TODO: implement these! 1686UNIMPLEMENTED art_quick_memcmp16 1687