projects / apple / libplatform.git / blame
| Commit | Line | Data |
|---|---|---|
| 442fbc9d A |
1 | /* |
| 2 | * Copyright (c) 2020 Apple Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_LICENSE_HEADER_START@ | |
| 5 | * | |
| 6 | * This file contains Original Code and/or Modifications of Original Code | |
| 7 | * as defined in and that are subject to the Apple Public Source License | |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in | |
| 9 | * compliance with the License. Please obtain a copy of the License at | |
| 10 | * http://www.opensource.apple.com/apsl/ and read it before using this | |
| 11 | * file. | |
| 12 | * | |
| 13 | * The Original Code and all software distributed under the License are | |
| 14 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 15 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
| 16 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. | |
| 18 | * Please see the License for the specific language governing rights and | |
| 19 | * limitations under the License. | |
| 20 | * | |
| 21 | * @APPLE_LICENSE_HEADER_END@ | |
| 22 | */ | |
| 23 | ||
| 24 | /* ASM Macro helpers */ | |
| 25 | #if defined(__ASSEMBLER__) | |
| 26 | ||
| 27 | .macro ARM64_STACK_PROLOG | |
| 28 | #if __has_feature(ptrauth_returns) | |
| 29 | pacibsp | |
| 30 | #endif | |
| 31 | .endmacro | |
| 32 | ||
| 33 | .macro ARM64_STACK_EPILOG | |
| 34 | #if __has_feature(ptrauth_returns) | |
| 35 | retab | |
| 36 | #else | |
| 37 | ret | |
| 38 | #endif | |
| 39 | .endmacro | |
| 40 | ||
| 41 | #define PUSH_FRAME \ | |
| 42 | stp fp, lr, [sp, #-16]! %% \ | |
| 43 | mov fp, sp %% | |
| 44 | ||
| 45 | #define POP_FRAME \ | |
| 46 | mov sp, fp %% \ | |
| 47 | ldp fp, lr, [sp], #16 %% | |
| 48 | #endif /* ASSEMBLER */ | |
| 49 | ||
| 50 | /* Offsets of the various register states inside of the mcontext data */ | |
| 51 | #define MCONTEXT_OFFSET_X0 16 | |
| 52 | ||
| 53 | #define MCONTEXT_OFFSET_X19_X20 168 | |
| 54 | #define MCONTEXT_OFFSET_X21_X22 184 | |
| 55 | #define MCONTEXT_OFFSET_X23_X24 200 | |
| 56 | ||
| 57 | #define MCONTEXT_OFFSET_X25_X26 216 | |
| 58 | #define MCONTEXT_OFFSET_X27_X28 232 | |
| 59 | ||
| 60 | #define MCONTEXT_OFFSET_FP_LR 248 | |
| 61 | #define MCONTEXT_OFFSET_SP 264 | |
| 62 | #define MCONTEXT_OFFSET_FLAGS 284 | |
| 63 | ||
| 64 | #define MCONTEXT_OFFSET_D8 424 | |
| 65 | #define MCONTEXT_OFFSET_D9 440 | |
| 66 | #define MCONTEXT_OFFSET_D10 456 | |
| 67 | #define MCONTEXT_OFFSET_D11 472 | |
| 68 | #define MCONTEXT_OFFSET_D12 488 | |
| 69 | #define MCONTEXT_OFFSET_D13 504 | |
| 70 | #define MCONTEXT_OFFSET_D14 520 | |
| 71 | #define MCONTEXT_OFFSET_D15 536 | |
| 72 | ||
| 73 | #if __has_feature(ptrauth_calls) | |
| 74 | #define LR_SIGNED_WITH_IB 0x2 /* Copied from __DARWIN_ARM_THREAD_STATE64_FLAGS_IB_SIGNED_LR */ | |
| 75 | #define LR_SIGNED_WITH_IB_BIT 0x1 | |
| 76 | #endif |