1 /* 2 * Copyright (C) 2014 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 #ifndef ART_RUNTIME_ARCH_ARM64_ASM_SUPPORT_ARM64_S_ 18 #define ART_RUNTIME_ARCH_ARM64_ASM_SUPPORT_ARM64_S_ 19 20 #include "asm_support_arm64.h" 21 22 // Define special registers. 23 24 // Register holding Thread::Current(). 25 #define xSELF x19 26 // Frame Pointer 27 #define xFP x29 28 // Link Register 29 #define xLR x30 30 // Define the intraprocedural linkage temporary registers. 31 #define xIP0 x16 32 #define wIP0 w16 33 #define xIP1 x17 34 #define wIP1 w17 35 36 #if defined(USE_READ_BARRIER) && defined(USE_BAKER_READ_BARRIER) 37 // Marking Register, holding Thread::Current()->GetIsGcMarking(). 38 // Only used with the Concurrent Copying (CC) garbage 39 // collector, with the Baker read barrier configuration. 40 #define wMR w20 41 #endif 42 43 .macro ENTRY name 44 .type \name, #function 45 .hidden \name // Hide this as a global symbol, so we do not incur plt calls. 46 .global \name 47 /* Cache alignment for function entry */ 48 .balign 16 49 \name: 50 .cfi_startproc 51 .endm 52 53 .macro END name 54 .cfi_endproc 55 .size \name, .-\name 56 .endm 57 58 .macro UNIMPLEMENTED name 59 ENTRY \name 60 brk 0 61 END \name 62 .endm 63 64 // Macro to poison (negate) the reference for heap poisoning. 65 .macro POISON_HEAP_REF rRef 66 #ifdef USE_HEAP_POISONING 67 neg \rRef, \rRef 68 #endif // USE_HEAP_POISONING 69 .endm 70 71 // Macro to unpoison (negate) the reference for heap poisoning. 72 .macro UNPOISON_HEAP_REF rRef 73 #ifdef USE_HEAP_POISONING 74 neg \rRef, \rRef 75 #endif // USE_HEAP_POISONING 76 .endm 77 78 #endif // ART_RUNTIME_ARCH_ARM64_ASM_SUPPORT_ARM64_S_ 79
