quick_entrypoints_x86.S revision 55978b87877f4774af213b405c9492dc08549912
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 THIS_LOAD_REQUIRES_READ_BARRIER 37 pushl RUNTIME_SAVE_ALL_CALLEE_SAVE_FRAME_OFFSET(REG_VAR(temp_reg, 1)) 38 CFI_ADJUST_CFA_OFFSET(4) 39 // Store esp as the top quick frame. 40 movl %esp, %fs:THREAD_TOP_QUICK_FRAME_OFFSET 41 // Ugly compile-time check, but we only have the preprocessor. 42 // Last +4: implicit return address pushed on stack when caller made call. 43#if (FRAME_SIZE_SAVE_ALL_CALLEE_SAVE != 3*4 + 16 + 4) 44#error "SAVE_ALL_CALLEE_SAVE_FRAME(X86) size not as expected." 45#endif 46END_MACRO 47 48 /* 49 * Macro that sets up the callee save frame to conform with 50 * Runtime::CreateCalleeSaveMethod(kRefsOnly) 51 */ 52MACRO2(SETUP_REFS_ONLY_CALLEE_SAVE_FRAME, got_reg, temp_reg) 53 PUSH edi // Save callee saves (ebx is saved/restored by the upcall) 54 PUSH esi 55 PUSH ebp 56 subl MACRO_LITERAL(12), %esp // Grow stack by 3 words. 57 CFI_ADJUST_CFA_OFFSET(12) 58 SETUP_GOT_NOSAVE VAR(got_reg, 0) 59 // Load Runtime::instance_ from GOT. 60 movl SYMBOL(_ZN3art7Runtime9instance_E)@GOT(REG_VAR(got_reg, 0)), REG_VAR(temp_reg, 1) 61 movl (REG_VAR(temp_reg, 1)), REG_VAR(temp_reg, 1) 62 // Push save all callee-save method. 63 THIS_LOAD_REQUIRES_READ_BARRIER 64 pushl RUNTIME_REFS_ONLY_CALLEE_SAVE_FRAME_OFFSET(REG_VAR(temp_reg, 1)) 65 CFI_ADJUST_CFA_OFFSET(4) 66 // Store esp as the top quick frame. 67 movl %esp, %fs:THREAD_TOP_QUICK_FRAME_OFFSET 68 69 // Ugly compile-time check, but we only have the preprocessor. 70 // Last +4: implicit return address pushed on stack when caller made call. 71#if (FRAME_SIZE_REFS_ONLY_CALLEE_SAVE != 3*4 + 16 + 4) 72#error "REFS_ONLY_CALLEE_SAVE_FRAME(X86) size not as expected." 73#endif 74END_MACRO 75 76MACRO0(RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME) 77 addl MACRO_LITERAL(16), %esp // Unwind stack up to saved values 78 CFI_ADJUST_CFA_OFFSET(-16) 79 POP ebp // Restore callee saves (ebx is saved/restored by the upcall) 80 POP esi 81 POP edi 82END_MACRO 83 84 /* 85 * Macro that sets up the callee save frame to conform with 86 * Runtime::CreateCalleeSaveMethod(kRefsAndArgs) 87 */ 88MACRO2(SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME, got_reg, temp_reg) 89 PUSH edi // Save callee saves 90 PUSH esi 91 PUSH ebp 92 PUSH ebx // Save args 93 PUSH edx 94 PUSH ecx 95 // Create space for FPR args. 96 subl MACRO_LITERAL(4 * 8), %esp 97 CFI_ADJUST_CFA_OFFSET(4 * 8) 98 // Save FPRs. 99 movsd %xmm0, 0(%esp) 100 movsd %xmm1, 8(%esp) 101 movsd %xmm2, 16(%esp) 102 movsd %xmm3, 24(%esp) 103 104 SETUP_GOT_NOSAVE VAR(got_reg, 0) 105 // Load Runtime::instance_ from GOT. 106 movl SYMBOL(_ZN3art7Runtime9instance_E)@GOT(REG_VAR(got_reg, 0)), REG_VAR(temp_reg, 1) 107 movl (REG_VAR(temp_reg, 1)), REG_VAR(temp_reg, 1) 108 // Push save all callee-save method. 109 THIS_LOAD_REQUIRES_READ_BARRIER 110 pushl RUNTIME_REFS_AND_ARGS_CALLEE_SAVE_FRAME_OFFSET(REG_VAR(temp_reg, 1)) 111 CFI_ADJUST_CFA_OFFSET(4) 112 // Store esp as the stop quick frame. 113 movl %esp, %fs:THREAD_TOP_QUICK_FRAME_OFFSET 114 115 // Ugly compile-time check, but we only have the preprocessor. 116 // Last +4: implicit return address pushed on stack when caller made call. 117#if (FRAME_SIZE_REFS_AND_ARGS_CALLEE_SAVE != 7*4 + 4*8 + 4) 118#error "REFS_AND_ARGS_CALLEE_SAVE_FRAME(X86) size not as expected." 119#endif 120END_MACRO 121 122 /* 123 * Macro that sets up the callee save frame to conform with 124 * Runtime::CreateCalleeSaveMethod(kRefsAndArgs) where the method is passed in EAX. 125 */ 126MACRO0(SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME_WITH_METHOD_IN_EAX) 127 // Save callee and GPR args, mixed together to agree with core spills bitmap. 128 PUSH edi // Save callee saves 129 PUSH esi 130 PUSH ebp 131 PUSH ebx // Save args 132 PUSH edx 133 PUSH ecx 134 135 // Create space for FPR args. 136 subl MACRO_LITERAL(32), %esp 137 CFI_ADJUST_CFA_OFFSET(32) 138 139 // Save FPRs. 140 movsd %xmm0, 0(%esp) 141 movsd %xmm1, 8(%esp) 142 movsd %xmm2, 16(%esp) 143 movsd %xmm3, 24(%esp) 144 145 PUSH eax // Store the ArtMethod reference at the bottom of the stack. 146 // Store esp as the stop quick frame. 147 movl %esp, %fs:THREAD_TOP_QUICK_FRAME_OFFSET 148END_MACRO 149 150MACRO0(RESTORE_REFS_AND_ARGS_CALLEE_SAVE_FRAME) 151 // Restore FPRs. EAX is still on the stack. 152 movsd 4(%esp), %xmm0 153 movsd 12(%esp), %xmm1 154 movsd 20(%esp), %xmm2 155 movsd 28(%esp), %xmm3 156 157 addl MACRO_LITERAL(36), %esp // Remove FPRs and EAX. 158 CFI_ADJUST_CFA_OFFSET(-36) 159 160 POP ecx // Restore args except eax 161 POP edx 162 POP ebx 163 POP ebp // Restore callee saves 164 POP esi 165 POP edi 166END_MACRO 167 168// Restore register and jump to routine 169// Inputs: EDI contains pointer to code. 170// Notes: Need to pop EAX too (restores Method*) 171MACRO0(RESTORE_REFS_AND_ARGS_CALLEE_SAVE_FRAME_AND_JUMP) 172 POP eax // Restore Method* 173 174 // Restore FPRs. 175 movsd 0(%esp), %xmm0 176 movsd 8(%esp), %xmm1 177 movsd 16(%esp), %xmm2 178 movsd 24(%esp), %xmm3 179 180 addl MACRO_LITERAL(32), %esp // Remove FPRs. 181 CFI_ADJUST_CFA_OFFSET(-32) 182 183 POP ecx // Restore args except eax 184 POP edx 185 POP ebx 186 POP ebp // Restore callee saves 187 POP esi 188 xchgl 0(%esp),%edi // restore EDI and place code pointer as only value on stack 189 ret 190END_MACRO 191 192 /* 193 * Macro that set calls through to artDeliverPendingExceptionFromCode, where the pending 194 * exception is Thread::Current()->exception_. 195 */ 196MACRO0(DELIVER_PENDING_EXCEPTION) 197 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME ebx, ebx // save callee saves for throw 198 // Outgoing argument set up 199 subl MACRO_LITERAL(12), %esp // Alignment padding 200 CFI_ADJUST_CFA_OFFSET(12) 201 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 202 CFI_ADJUST_CFA_OFFSET(4) 203 call SYMBOL(artDeliverPendingExceptionFromCode) // artDeliverPendingExceptionFromCode(Thread*) 204 int3 // unreached 205END_MACRO 206 207MACRO2(NO_ARG_RUNTIME_EXCEPTION, c_name, cxx_name) 208 DEFINE_FUNCTION RAW_VAR(c_name, 0) 209 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME ebx, ebx // save all registers as basis for long jump context 210 // Outgoing argument set up 211 subl MACRO_LITERAL(12), %esp // alignment padding 212 CFI_ADJUST_CFA_OFFSET(12) 213 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 214 CFI_ADJUST_CFA_OFFSET(4) 215 call VAR(cxx_name, 1) // cxx_name(Thread*) 216 int3 // unreached 217 END_FUNCTION RAW_VAR(c_name, 0) 218END_MACRO 219 220MACRO2(ONE_ARG_RUNTIME_EXCEPTION, c_name, cxx_name) 221 DEFINE_FUNCTION RAW_VAR(c_name, 0) 222 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME ebx, ebx // save all registers as basis for long jump context 223 mov %esp, %ecx 224 // Outgoing argument set up 225 subl MACRO_LITERAL(8), %esp // alignment padding 226 CFI_ADJUST_CFA_OFFSET(8) 227 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 228 CFI_ADJUST_CFA_OFFSET(4) 229 PUSH eax // pass arg1 230 call VAR(cxx_name, 1) // cxx_name(arg1, Thread*) 231 int3 // unreached 232 END_FUNCTION RAW_VAR(c_name, 0) 233END_MACRO 234 235MACRO2(TWO_ARG_RUNTIME_EXCEPTION, c_name, cxx_name) 236 DEFINE_FUNCTION RAW_VAR(c_name, 0) 237 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME ebx, ebx // save all registers as basis for long jump context 238 // Outgoing argument set up 239 PUSH eax // alignment padding 240 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 241 CFI_ADJUST_CFA_OFFSET(4) 242 PUSH ecx // pass arg2 243 PUSH eax // pass arg1 244 call VAR(cxx_name, 1) // cxx_name(arg1, arg2, Thread*) 245 int3 // unreached 246 END_FUNCTION RAW_VAR(c_name, 0) 247END_MACRO 248 249 /* 250 * Called by managed code to create and deliver a NullPointerException. 251 */ 252NO_ARG_RUNTIME_EXCEPTION art_quick_throw_null_pointer_exception, artThrowNullPointerExceptionFromCode 253 254 /* 255 * Called by managed code to create and deliver an ArithmeticException. 256 */ 257NO_ARG_RUNTIME_EXCEPTION art_quick_throw_div_zero, artThrowDivZeroFromCode 258 259 /* 260 * Called by managed code to create and deliver a StackOverflowError. 261 */ 262NO_ARG_RUNTIME_EXCEPTION art_quick_throw_stack_overflow, artThrowStackOverflowFromCode 263 264 /* 265 * Called by managed code, saves callee saves and then calls artThrowException 266 * that will place a mock Method* at the bottom of the stack. Arg1 holds the exception. 267 */ 268ONE_ARG_RUNTIME_EXCEPTION art_quick_deliver_exception, artDeliverExceptionFromCode 269 270 /* 271 * Called by managed code to create and deliver a NoSuchMethodError. 272 */ 273ONE_ARG_RUNTIME_EXCEPTION art_quick_throw_no_such_method, artThrowNoSuchMethodFromCode 274 275 /* 276 * Called by managed code to create and deliver an ArrayIndexOutOfBoundsException. Arg1 holds 277 * index, arg2 holds limit. 278 */ 279TWO_ARG_RUNTIME_EXCEPTION art_quick_throw_array_bounds, artThrowArrayBoundsFromCode 280 281 /* 282 * All generated callsites for interface invokes and invocation slow paths will load arguments 283 * as usual - except instead of loading arg0/r0 with the target Method*, arg0/r0 will contain 284 * the method_idx. This wrapper will save arg1-arg3 and call the appropriate C helper. 285 * NOTE: "this" is first visible argument of the target, and so can be found in arg1/r1. 286 * 287 * The helper will attempt to locate the target and return a 64-bit result in r0/r1 consisting 288 * of the target Method* in r0 and method->code_ in r1. 289 * 290 * If unsuccessful, the helper will return null/null will bea pending exception in the 291 * thread and we branch to another stub to deliver it. 292 * 293 * On success this wrapper will restore arguments and *jump* to the target, leaving the lr 294 * pointing back to the original caller. 295 */ 296MACRO1(INVOKE_TRAMPOLINE_BODY, cxx_name) 297 SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME ebx, ebx 298 movl %esp, %edx // remember SP 299 300 // Outgoing argument set up 301 PUSH edx // pass SP 302 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 303 CFI_ADJUST_CFA_OFFSET(4) 304 PUSH ecx // pass arg2 305 PUSH eax // pass arg1 306 call VAR(cxx_name, 0) // cxx_name(arg1, arg2, arg3, Thread*, SP) 307 movl %edx, %edi // save code pointer in EDI 308 addl MACRO_LITERAL(20), %esp // Pop arguments skip eax 309 CFI_ADJUST_CFA_OFFSET(-20) 310 311 // Restore FPRs. 312 movsd 0(%esp), %xmm0 313 movsd 8(%esp), %xmm1 314 movsd 16(%esp), %xmm2 315 movsd 24(%esp), %xmm3 316 317 // Remove space for FPR args. 318 addl MACRO_LITERAL(4 * 8), %esp 319 CFI_ADJUST_CFA_OFFSET(-4 * 8) 320 321 POP ecx // Restore args except eax 322 POP edx 323 POP ebx 324 POP ebp // Restore callee saves 325 POP esi 326 // Swap EDI callee save with code pointer. 327 xchgl %edi, (%esp) 328 testl %eax, %eax // Branch forward if exception pending. 329 jz 1f 330 // Tail call to intended method. 331 ret 3321: 333 addl MACRO_LITERAL(4), %esp // Pop code pointer off stack 334 CFI_ADJUST_CFA_OFFSET(-4) 335 DELIVER_PENDING_EXCEPTION 336END_MACRO 337MACRO2(INVOKE_TRAMPOLINE, c_name, cxx_name) 338 DEFINE_FUNCTION RAW_VAR(c_name, 0) 339 INVOKE_TRAMPOLINE_BODY RAW_VAR(cxx_name, 1) 340 END_FUNCTION RAW_VAR(c_name, 0) 341END_MACRO 342 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 UNPOISON_HEAP_REF ebx 1153 movl MIRROR_CLASS_COMPONENT_TYPE_OFFSET(%ebx), %ebx 1154 UNPOISON_HEAP_REF ebx 1155 // value's type == array's component type - trivial assignability 1156#ifdef USE_HEAP_POISONING 1157 PUSH eax // save eax 1158 movl MIRROR_OBJECT_CLASS_OFFSET(%edx), %eax 1159 UNPOISON_HEAP_REF eax 1160 cmpl %eax, %ebx 1161 POP eax // restore eax 1162#else 1163 cmpl MIRROR_OBJECT_CLASS_OFFSET(%edx), %ebx 1164#endif 1165 jne .Lcheck_assignability 1166.Ldo_aput: 1167 POISON_HEAP_REF edx 1168 movl %edx, MIRROR_OBJECT_ARRAY_DATA_OFFSET(%eax, %ecx, 4) 1169 movl %fs:THREAD_CARD_TABLE_OFFSET, %edx 1170 shrl LITERAL(7), %eax 1171 movb %dl, (%edx, %eax) 1172 ret 1173.Ldo_aput_null: 1174 movl %edx, MIRROR_OBJECT_ARRAY_DATA_OFFSET(%eax, %ecx, 4) 1175 ret 1176.Lcheck_assignability: 1177 PUSH eax // save arguments 1178 PUSH ecx 1179 PUSH edx 1180 subl LITERAL(8), %esp // alignment padding 1181 CFI_ADJUST_CFA_OFFSET(8) 1182#ifdef USE_HEAP_POISONING 1183 movl MIRROR_OBJECT_CLASS_OFFSET(%edx), %eax // pass arg2 - type of the value to be stored 1184 UNPOISON_HEAP_REF eax 1185 PUSH eax 1186#else 1187 pushl MIRROR_OBJECT_CLASS_OFFSET(%edx) // pass arg2 - type of the value to be stored 1188 CFI_ADJUST_CFA_OFFSET(4) 1189#endif 1190 PUSH ebx // pass arg1 - component type of the array 1191 call SYMBOL(artIsAssignableFromCode) // (Class* a, Class* b) 1192 addl LITERAL(16), %esp // pop arguments 1193 CFI_ADJUST_CFA_OFFSET(-16) 1194 testl %eax, %eax 1195 jz .Lthrow_array_store_exception 1196 POP edx 1197 POP ecx 1198 POP eax 1199 POISON_HEAP_REF edx 1200 movl %edx, MIRROR_OBJECT_ARRAY_DATA_OFFSET(%eax, %ecx, 4) // do the aput 1201 movl %fs:THREAD_CARD_TABLE_OFFSET, %edx 1202 shrl LITERAL(7), %eax 1203 movb %dl, (%edx, %eax) 1204 ret 1205 CFI_ADJUST_CFA_OFFSET(12) // 3 POP after the jz for unwinding. 1206.Lthrow_array_store_exception: 1207 POP edx 1208 POP ecx 1209 POP eax 1210 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME ebx, ebx // save all registers as basis for long jump context 1211 // Outgoing argument set up 1212 PUSH eax // alignment padding 1213 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 1214 CFI_ADJUST_CFA_OFFSET(4) 1215 PUSH edx // pass arg2 - value 1216 PUSH eax // pass arg1 - array 1217 call SYMBOL(artThrowArrayStoreException) // (array, value, Thread*) 1218 int3 // unreached 1219END_FUNCTION art_quick_aput_obj 1220 1221DEFINE_FUNCTION art_quick_memcpy 1222 SETUP_GOT_NOSAVE ebx // clobbers EBX 1223 PUSH edx // pass arg3 1224 PUSH ecx // pass arg2 1225 PUSH eax // pass arg1 1226 call PLT_SYMBOL(memcpy) // (void*, const void*, size_t) 1227 addl LITERAL(12), %esp // pop arguments 1228 CFI_ADJUST_CFA_OFFSET(-12) 1229 ret 1230END_FUNCTION art_quick_memcpy 1231 1232NO_ARG_DOWNCALL art_quick_test_suspend, artTestSuspendFromCode, ret 1233 1234DEFINE_FUNCTION art_quick_d2l 1235 subl LITERAL(12), %esp // alignment padding, room for argument 1236 CFI_ADJUST_CFA_OFFSET(12) 1237 movsd %xmm0, 0(%esp) // arg a 1238 call SYMBOL(art_d2l) // (jdouble a) 1239 addl LITERAL(12), %esp // pop arguments 1240 CFI_ADJUST_CFA_OFFSET(-12) 1241 ret 1242END_FUNCTION art_quick_d2l 1243 1244DEFINE_FUNCTION art_quick_f2l 1245 subl LITERAL(12), %esp // alignment padding 1246 CFI_ADJUST_CFA_OFFSET(12) 1247 movss %xmm0, 0(%esp) // arg a 1248 call SYMBOL(art_f2l) // (jfloat a) 1249 addl LITERAL(12), %esp // pop arguments 1250 CFI_ADJUST_CFA_OFFSET(-12) 1251 ret 1252END_FUNCTION art_quick_f2l 1253 1254DEFINE_FUNCTION art_quick_ldiv 1255 subl LITERAL(12), %esp // alignment padding 1256 CFI_ADJUST_CFA_OFFSET(12) 1257 PUSH ebx // pass arg4 b.hi 1258 PUSH edx // pass arg3 b.lo 1259 PUSH ecx // pass arg2 a.hi 1260 PUSH eax // pass arg1 a.lo 1261 call SYMBOL(artLdiv) // (jlong a, jlong b) 1262 addl LITERAL(28), %esp // pop arguments 1263 CFI_ADJUST_CFA_OFFSET(-28) 1264 ret 1265END_FUNCTION art_quick_ldiv 1266 1267DEFINE_FUNCTION art_quick_lmod 1268 subl LITERAL(12), %esp // alignment padding 1269 CFI_ADJUST_CFA_OFFSET(12) 1270 PUSH ebx // pass arg4 b.hi 1271 PUSH edx // pass arg3 b.lo 1272 PUSH ecx // pass arg2 a.hi 1273 PUSH eax // pass arg1 a.lo 1274 call SYMBOL(artLmod) // (jlong a, jlong b) 1275 addl LITERAL(28), %esp // pop arguments 1276 CFI_ADJUST_CFA_OFFSET(-28) 1277 ret 1278END_FUNCTION art_quick_lmod 1279 1280DEFINE_FUNCTION art_quick_lmul 1281 imul %eax, %ebx // ebx = a.lo(eax) * b.hi(ebx) 1282 imul %edx, %ecx // ecx = b.lo(edx) * a.hi(ecx) 1283 mul %edx // edx:eax = a.lo(eax) * b.lo(edx) 1284 add %ebx, %ecx 1285 add %ecx, %edx // edx += (a.lo * b.hi) + (b.lo * a.hi) 1286 ret 1287END_FUNCTION art_quick_lmul 1288 1289DEFINE_FUNCTION art_quick_lshl 1290 // ecx:eax << edx 1291 xchg %edx, %ecx 1292 shld %cl,%eax,%edx 1293 shl %cl,%eax 1294 test LITERAL(32), %cl 1295 jz 1f 1296 mov %eax, %edx 1297 xor %eax, %eax 12981: 1299 ret 1300END_FUNCTION art_quick_lshl 1301 1302DEFINE_FUNCTION art_quick_lshr 1303 // ecx:eax >> edx 1304 xchg %edx, %ecx 1305 shrd %cl,%edx,%eax 1306 sar %cl,%edx 1307 test LITERAL(32),%cl 1308 jz 1f 1309 mov %edx, %eax 1310 sar LITERAL(31), %edx 13111: 1312 ret 1313END_FUNCTION art_quick_lshr 1314 1315DEFINE_FUNCTION art_quick_lushr 1316 // ecx:eax >>> edx 1317 xchg %edx, %ecx 1318 shrd %cl,%edx,%eax 1319 shr %cl,%edx 1320 test LITERAL(32),%cl 1321 jz 1f 1322 mov %edx, %eax 1323 xor %edx, %edx 13241: 1325 ret 1326END_FUNCTION art_quick_lushr 1327 1328ONE_ARG_REF_DOWNCALL art_quick_get_boolean_static, artGetBooleanStaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1329ONE_ARG_REF_DOWNCALL art_quick_get_byte_static, artGetByteStaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1330ONE_ARG_REF_DOWNCALL art_quick_get_char_static, artGetCharStaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1331ONE_ARG_REF_DOWNCALL art_quick_get_short_static, artGetShortStaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1332ONE_ARG_REF_DOWNCALL art_quick_get32_static, artGet32StaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1333ONE_ARG_REF_DOWNCALL art_quick_get64_static, artGet64StaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1334ONE_ARG_REF_DOWNCALL art_quick_get_obj_static, artGetObjStaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1335 1336TWO_ARG_REF_DOWNCALL art_quick_get_boolean_instance, artGetBooleanInstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1337TWO_ARG_REF_DOWNCALL art_quick_get_byte_instance, artGetByteInstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1338TWO_ARG_REF_DOWNCALL art_quick_get_char_instance, artGetCharInstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1339TWO_ARG_REF_DOWNCALL art_quick_get_short_instance, artGetShortInstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1340TWO_ARG_REF_DOWNCALL art_quick_get32_instance, artGet32InstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1341TWO_ARG_REF_DOWNCALL art_quick_get64_instance, artGet64InstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1342TWO_ARG_REF_DOWNCALL art_quick_get_obj_instance, artGetObjInstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION 1343 1344TWO_ARG_REF_DOWNCALL art_quick_set8_static, artSet8StaticFromCode, RETURN_IF_EAX_ZERO 1345TWO_ARG_REF_DOWNCALL art_quick_set16_static, artSet16StaticFromCode, RETURN_IF_EAX_ZERO 1346TWO_ARG_REF_DOWNCALL art_quick_set32_static, artSet32StaticFromCode, RETURN_IF_EAX_ZERO 1347TWO_ARG_REF_DOWNCALL art_quick_set_obj_static, artSetObjStaticFromCode, RETURN_IF_EAX_ZERO 1348 1349THREE_ARG_REF_DOWNCALL art_quick_set8_instance, artSet8InstanceFromCode, RETURN_IF_EAX_ZERO 1350THREE_ARG_REF_DOWNCALL art_quick_set16_instance, artSet16InstanceFromCode, RETURN_IF_EAX_ZERO 1351THREE_ARG_REF_DOWNCALL art_quick_set32_instance, artSet32InstanceFromCode, RETURN_IF_EAX_ZERO 1352THREE_ARG_REF_DOWNCALL art_quick_set_obj_instance, artSetObjInstanceFromCode, RETURN_IF_EAX_ZERO 1353 1354// Call artSet64InstanceFromCode with 4 word size arguments and the referrer. 1355DEFINE_FUNCTION art_quick_set64_instance 1356 movd %ebx, %xmm0 1357 SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC 1358 movd %xmm0, %ebx 1359 // Outgoing argument set up 1360 subl LITERAL(8), %esp // alignment padding 1361 CFI_ADJUST_CFA_OFFSET(8) 1362 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 1363 CFI_ADJUST_CFA_OFFSET(4) 1364 pushl (FRAME_SIZE_REFS_ONLY_CALLEE_SAVE+12)(%esp) // pass referrer 1365 CFI_ADJUST_CFA_OFFSET(4) 1366 PUSH ebx // pass high half of new_val 1367 PUSH edx // pass low half of new_val 1368 PUSH ecx // pass object 1369 PUSH eax // pass field_idx 1370 call SYMBOL(artSet64InstanceFromCode) // (field_idx, Object*, new_val, referrer, Thread*) 1371 addl LITERAL(32), %esp // pop arguments 1372 CFI_ADJUST_CFA_OFFSET(-32) 1373 RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 1374 RETURN_IF_EAX_ZERO // return or deliver exception 1375END_FUNCTION art_quick_set64_instance 1376 1377// Call artSet64StaticFromCode with 3 word size arguments plus with the referrer in the 2nd position 1378// so that new_val is aligned on even registers were we passing arguments in registers. 1379DEFINE_FUNCTION art_quick_set64_static 1380 SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC 1381 mov FRAME_SIZE_REFS_ONLY_CALLEE_SAVE(%esp), %ebx // get referrer 1382 subl LITERAL(12), %esp // alignment padding 1383 CFI_ADJUST_CFA_OFFSET(12) 1384 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 1385 CFI_ADJUST_CFA_OFFSET(4) 1386 PUSH edx // pass high half of new_val 1387 PUSH ecx // pass low half of new_val 1388 PUSH ebx // pass referrer 1389 PUSH eax // pass field_idx 1390 call SYMBOL(artSet64StaticFromCode) // (field_idx, referrer, new_val, Thread*) 1391 addl LITERAL(32), %esp // pop arguments 1392 CFI_ADJUST_CFA_OFFSET(-32) 1393 RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address 1394 RETURN_IF_EAX_ZERO // return or deliver exception 1395END_FUNCTION art_quick_set64_static 1396 1397DEFINE_FUNCTION art_quick_proxy_invoke_handler 1398 SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME_WITH_METHOD_IN_EAX 1399 PUSH esp // pass SP 1400 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 1401 CFI_ADJUST_CFA_OFFSET(4) 1402 PUSH ecx // pass receiver 1403 PUSH eax // pass proxy method 1404 call SYMBOL(artQuickProxyInvokeHandler) // (proxy method, receiver, Thread*, SP) 1405 movd %eax, %xmm0 // place return value also into floating point return value 1406 movd %edx, %xmm1 1407 punpckldq %xmm1, %xmm0 1408 addl LITERAL(16 + FRAME_SIZE_REFS_AND_ARGS_CALLEE_SAVE - FRAME_SIZE_REFS_ONLY_CALLEE_SAVE), %esp 1409 CFI_ADJUST_CFA_OFFSET(-(16 + FRAME_SIZE_REFS_AND_ARGS_CALLEE_SAVE - FRAME_SIZE_REFS_ONLY_CALLEE_SAVE)) 1410 RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME 1411 RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception 1412END_FUNCTION art_quick_proxy_invoke_handler 1413 1414 /* 1415 * Called to resolve an imt conflict. xmm7 is a hidden argument that holds the target method's 1416 * dex method index. 1417 */ 1418DEFINE_FUNCTION art_quick_imt_conflict_trampoline 1419 movd %xmm7, %eax // get target method index stored in xmm7 1420 INVOKE_TRAMPOLINE_BODY artInvokeInterfaceTrampoline 1421END_FUNCTION art_quick_imt_conflict_trampoline 1422 1423DEFINE_FUNCTION art_quick_resolution_trampoline 1424 SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME ebx, ebx 1425 movl %esp, %edi 1426 PUSH EDI // pass SP. do not just PUSH ESP; that messes up unwinding 1427 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 1428 CFI_ADJUST_CFA_OFFSET(4) 1429 PUSH ecx // pass receiver 1430 PUSH eax // pass method 1431 call SYMBOL(artQuickResolutionTrampoline) // (Method* called, receiver, Thread*, SP) 1432 movl %eax, %edi // remember code pointer in EDI 1433 addl LITERAL(16), %esp // pop arguments 1434 CFI_ADJUST_CFA_OFFSET(-16) 1435 test %eax, %eax // if code pointer is null goto deliver pending exception 1436 jz 1f 1437 RESTORE_REFS_AND_ARGS_CALLEE_SAVE_FRAME_AND_JUMP 14381: 1439 RESTORE_REFS_AND_ARGS_CALLEE_SAVE_FRAME 1440 DELIVER_PENDING_EXCEPTION 1441END_FUNCTION art_quick_resolution_trampoline 1442 1443DEFINE_FUNCTION art_quick_generic_jni_trampoline 1444 SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME_WITH_METHOD_IN_EAX 1445 movl %esp, %ebp // save SP at callee-save frame 1446 CFI_DEF_CFA_REGISTER(ebp) 1447 subl LITERAL(5120), %esp 1448 // prepare for artQuickGenericJniTrampoline call 1449 // (Thread*, SP) 1450 // (esp) 4(esp) <= C calling convention 1451 // fs:... ebp <= where they are 1452 1453 subl LITERAL(8), %esp // Padding for 16B alignment. 1454 pushl %ebp // Pass SP (to ArtMethod). 1455 pushl %fs:THREAD_SELF_OFFSET // Pass Thread::Current(). 1456 call SYMBOL(artQuickGenericJniTrampoline) // (Thread*, sp) 1457 1458 // The C call will have registered the complete save-frame on success. 1459 // The result of the call is: 1460 // eax: pointer to native code, 0 on error. 1461 // edx: pointer to the bottom of the used area of the alloca, can restore stack till there. 1462 1463 // Check for error = 0. 1464 test %eax, %eax 1465 jz .Lexception_in_native 1466 1467 // Release part of the alloca. 1468 movl %edx, %esp 1469 1470 // On x86 there are no registers passed, so nothing to pop here. 1471 // Native call. 1472 call *%eax 1473 1474 // result sign extension is handled in C code 1475 // prepare for artQuickGenericJniEndTrampoline call 1476 // (Thread*, result, result_f) 1477 // (esp) 4(esp) 12(esp) <= C calling convention 1478 // fs:... eax:edx fp0 <= where they are 1479 1480 subl LITERAL(20), %esp // Padding & pass float result. 1481 fstpl (%esp) 1482 pushl %edx // Pass int result. 1483 pushl %eax 1484 pushl %fs:THREAD_SELF_OFFSET // Pass Thread::Current(). 1485 call SYMBOL(artQuickGenericJniEndTrampoline) 1486 1487 // Pending exceptions possible. 1488 mov %fs:THREAD_EXCEPTION_OFFSET, %ebx 1489 testl %ebx, %ebx 1490 jnz .Lexception_in_native 1491 1492 // Tear down the alloca. 1493 movl %ebp, %esp 1494 CFI_DEF_CFA_REGISTER(esp) 1495 1496 1497 // Tear down the callee-save frame. 1498 // Remove space for FPR args and EAX 1499 addl LITERAL(4 + 4 * 8), %esp 1500 CFI_ADJUST_CFA_OFFSET(-(4 + 4 * 8)) 1501 1502 POP ecx 1503 addl LITERAL(4), %esp // Avoid edx, as it may be part of the result. 1504 CFI_ADJUST_CFA_OFFSET(-4) 1505 POP ebx 1506 POP ebp // Restore callee saves 1507 POP esi 1508 POP edi 1509 // Quick expects the return value to be in xmm0. 1510 movd %eax, %xmm0 1511 movd %edx, %xmm1 1512 punpckldq %xmm1, %xmm0 1513 ret 1514.Lexception_in_native: 1515 movl %fs:THREAD_TOP_QUICK_FRAME_OFFSET, %esp 1516 // Do a call to push a new save-all frame required by the runtime. 1517 call .Lexception_call 1518.Lexception_call: 1519 DELIVER_PENDING_EXCEPTION 1520END_FUNCTION art_quick_generic_jni_trampoline 1521 1522DEFINE_FUNCTION art_quick_to_interpreter_bridge 1523 SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME ebx, ebx // save frame 1524 mov %esp, %edx // remember SP 1525 PUSH eax // alignment padding 1526 PUSH edx // pass SP 1527 pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() 1528 CFI_ADJUST_CFA_OFFSET(4) 1529 PUSH eax // pass method 1530 call SYMBOL(artQuickToInterpreterBridge) // (method, Thread*, SP) 1531 addl LITERAL(16), %esp // pop arguments 1532 CFI_ADJUST_CFA_OFFSET(-16) 1533 1534 // Return eax:edx in xmm0 also. 1535 movd %eax, %xmm0 1536 movd %edx, %xmm1 1537 punpckldq %xmm1, %xmm0 1538 1539 addl LITERAL(48), %esp // Remove FPRs and EAX, ECX, EDX, EBX. 1540 CFI_ADJUST_CFA_OFFSET(-48) 1541 1542 POP ebp // Restore callee saves 1543 POP esi 1544 POP edi 1545 1546 RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception 1547END_FUNCTION art_quick_to_interpreter_bridge 1548 1549 /* 1550 * Routine that intercepts method calls and returns. 1551 */ 1552DEFINE_FUNCTION art_quick_instrumentation_entry 1553 SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME ebx, edx 1554 PUSH eax // Save eax which will be clobbered by the callee-save method. 1555 subl LITERAL(12), %esp // Align stack. 1556 CFI_ADJUST_CFA_OFFSET(12) 1557 pushl FRAME_SIZE_REFS_AND_ARGS_CALLEE_SAVE-4+16(%esp) // Pass LR. 1558 CFI_ADJUST_CFA_OFFSET(4) 1559 pushl %fs:THREAD_SELF_OFFSET // Pass Thread::Current(). 1560 CFI_ADJUST_CFA_OFFSET(4) 1561 PUSH ecx // Pass receiver. 1562 PUSH eax // Pass Method*. 1563 call SYMBOL(artInstrumentationMethodEntryFromCode) // (Method*, Object*, Thread*, LR) 1564 addl LITERAL(28), %esp // Pop arguments upto saved Method*. 1565 CFI_ADJUST_CFA_OFFSET(-28) 1566 movl 60(%esp), %edi // Restore edi. 1567 movl %eax, 60(%esp) // Place code* over edi, just under return pc. 1568 movl SYMBOL(art_quick_instrumentation_exit)@GOT(%ebx), %ebx 1569 // Place instrumentation exit as return pc. ebx holds the GOT computed on entry. 1570 movl %ebx, 64(%esp) 1571 movl 0(%esp), %eax // Restore eax. 1572 // Restore FPRs (extra 4 bytes of offset due to EAX push at top). 1573 movsd 8(%esp), %xmm0 1574 movsd 16(%esp), %xmm1 1575 movsd 24(%esp), %xmm2 1576 movsd 32(%esp), %xmm3 1577 1578 // Restore GPRs. 1579 movl 40(%esp), %ecx // Restore ecx. 1580 movl 44(%esp), %edx // Restore edx. 1581 movl 48(%esp), %ebx // Restore ebx. 1582 movl 52(%esp), %ebp // Restore ebp. 1583 movl 56(%esp), %esi // Restore esi. 1584 addl LITERAL(60), %esp // Wind stack back upto code*. 1585 CFI_ADJUST_CFA_OFFSET(-60) 1586 ret // Call method (and pop). 1587END_FUNCTION art_quick_instrumentation_entry 1588 1589DEFINE_FUNCTION art_quick_instrumentation_exit 1590 pushl LITERAL(0) // Push a fake return PC as there will be none on the stack. 1591 CFI_ADJUST_CFA_OFFSET(4) 1592 SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx 1593 mov %esp, %ecx // Remember SP 1594 subl LITERAL(8), %esp // Save float return value. 1595 CFI_ADJUST_CFA_OFFSET(8) 1596 movq %xmm0, (%esp) 1597 PUSH edx // Save gpr return value. 1598 PUSH eax 1599 subl LITERAL(16), %esp // Align stack 1600 CFI_ADJUST_CFA_OFFSET(16) 1601 movq %xmm0, (%esp) // Pass float return value. 1602 PUSH edx // Pass gpr return value. 1603 PUSH eax 1604 PUSH ecx // Pass SP. 1605 pushl %fs:THREAD_SELF_OFFSET // Pass Thread::Current. 1606 CFI_ADJUST_CFA_OFFSET(4) 1607 call SYMBOL(artInstrumentationMethodExitFromCode) // (Thread*, SP, gpr_result, fpr_result) 1608 mov %eax, %ecx // Move returned link register. 1609 addl LITERAL(32), %esp // Pop arguments. 1610 CFI_ADJUST_CFA_OFFSET(-32) 1611 movl %edx, %ebx // Move returned link register for deopt 1612 // (ebx is pretending to be our LR). 1613 POP eax // Restore gpr return value. 1614 POP edx 1615 movq (%esp), %xmm0 // Restore fpr return value. 1616 addl LITERAL(8), %esp 1617 CFI_ADJUST_CFA_OFFSET(-8) 1618 RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME 1619 addl LITERAL(4), %esp // Remove fake return pc. 1620 CFI_ADJUST_CFA_OFFSET(-4) 1621 jmp *%ecx // Return. 1622END_FUNCTION art_quick_instrumentation_exit 1623 1624 /* 1625 * Instrumentation has requested that we deoptimize into the interpreter. The deoptimization 1626 * will long jump to the upcall with a special exception of -1. 1627 */ 1628DEFINE_FUNCTION art_quick_deoptimize 1629 PUSH ebx // Entry point for a jump. Fake that we were called. 1630.globl SYMBOL(art_quick_deoptimize_from_compiled_slow_path) // Entry point for real calls 1631 // from compiled slow paths. 1632SYMBOL(art_quick_deoptimize_from_compiled_slow_path): 1633 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME ebx, ebx 1634 subl LITERAL(12), %esp // Align stack. 1635 CFI_ADJUST_CFA_OFFSET(12) 1636 pushl %fs:THREAD_SELF_OFFSET // Pass Thread::Current(). 1637 CFI_ADJUST_CFA_OFFSET(4) 1638 call SYMBOL(artDeoptimize) // artDeoptimize(Thread*) 1639 int3 // Unreachable. 1640END_FUNCTION art_quick_deoptimize 1641 1642 /* 1643 * String's compareTo. 1644 * 1645 * On entry: 1646 * eax: this string object (known non-null) 1647 * ecx: comp string object (known non-null) 1648 */ 1649DEFINE_FUNCTION art_quick_string_compareto 1650 PUSH esi // push callee save reg 1651 PUSH edi // push callee save reg 1652 mov MIRROR_STRING_COUNT_OFFSET(%eax), %edx 1653 mov MIRROR_STRING_COUNT_OFFSET(%ecx), %ebx 1654 lea MIRROR_STRING_VALUE_OFFSET(%eax), %esi 1655 lea MIRROR_STRING_VALUE_OFFSET(%ecx), %edi 1656 /* Calculate min length and count diff */ 1657 mov %edx, %ecx 1658 mov %edx, %eax 1659 subl %ebx, %eax 1660 cmovg %ebx, %ecx 1661 /* 1662 * At this point we have: 1663 * eax: value to return if first part of strings are equal 1664 * ecx: minimum among the lengths of the two strings 1665 * esi: pointer to this string data 1666 * edi: pointer to comp string data 1667 */ 1668 jecxz .Lkeep_length 1669 repe cmpsw // find nonmatching chars in [%esi] and [%edi], up to length %ecx 1670 jne .Lnot_equal 1671.Lkeep_length: 1672 POP edi // pop callee save reg 1673 POP esi // pop callee save reg 1674 ret 1675 .balign 16 1676.Lnot_equal: 1677 movzwl -2(%esi), %eax // get last compared char from this string 1678 movzwl -2(%edi), %ecx // get last compared char from comp string 1679 subl %ecx, %eax // return the difference 1680 POP edi // pop callee save reg 1681 POP esi // pop callee save reg 1682 ret 1683END_FUNCTION art_quick_string_compareto 1684 1685// Return from a nested signal: 1686// Entry: 1687// eax: address of jmp_buf in TLS 1688 1689DEFINE_FUNCTION art_nested_signal_return 1690 SETUP_GOT_NOSAVE ebx // sets %ebx for call into PLT 1691 movl LITERAL(1), %ecx 1692 PUSH ecx // second arg to longjmp (1) 1693 PUSH eax // first arg to longjmp (jmp_buf) 1694 call PLT_SYMBOL(longjmp) 1695 int3 // won't get here. 1696END_FUNCTION art_nested_signal_return 1697 1698 // TODO: implement these! 1699UNIMPLEMENTED art_quick_memcmp16 1700