| 1 | //===-- aeabi_memset.S - EABI memset implementation -----------------------===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #include "../assembly.h" |
| 10 | |
| 11 | // void __aeabi_memset(void *dest, size_t n, int c) { memset(dest, c, n); } |
| 12 | // void __aeabi_memclr(void *dest, size_t n) { __aeabi_memset(dest, n, 0); } |
| 13 | |
| 14 | .syntax unified |
| 15 | .p2align 2 |
| 16 | DEFINE_COMPILERRT_FUNCTION(__aeabi_memset) |
| 17 | #if defined(__ARM_FEATURE_BTI_DEFAULT) |
| 18 | bti |
| 19 | #endif |
| 20 | mov r3, r1 |
| 21 | mov r1, r2 |
| 22 | mov r2, r3 |
| 23 | #ifdef USE_THUMB_1 |
| 24 | push {r7, lr} |
| 25 | bl memset |
| 26 | pop {r7, pc} |
| 27 | #else |
| 28 | b memset |
| 29 | #endif |
| 30 | END_COMPILERRT_FUNCTION(__aeabi_memset) |
| 31 | |
| 32 | DEFINE_AEABI_FUNCTION_ALIAS(__aeabi_memset4, __aeabi_memset) |
| 33 | DEFINE_AEABI_FUNCTION_ALIAS(__aeabi_memset8, __aeabi_memset) |
| 34 | |
| 35 | .p2align 2 |
| 36 | DEFINE_COMPILERRT_FUNCTION(__aeabi_memclr) |
| 37 | #if defined(__ARM_FEATURE_BTI_DEFAULT) |
| 38 | bti |
| 39 | #endif |
| 40 | mov r2, r1 |
| 41 | movs r1, #0 |
| 42 | #ifdef USE_THUMB_1 |
| 43 | push {r7, lr} |
| 44 | bl memset |
| 45 | pop {r7, pc} |
| 46 | #else |
| 47 | b memset |
| 48 | #endif |
| 49 | END_COMPILERRT_FUNCTION(__aeabi_memclr) |
| 50 | |
| 51 | DEFINE_AEABI_FUNCTION_ALIAS(__aeabi_memclr4, __aeabi_memclr) |
| 52 | DEFINE_AEABI_FUNCTION_ALIAS(__aeabi_memclr8, __aeabi_memclr) |
| 53 | |
| 54 | NO_EXEC_STACK_DIRECTIVE |
| 55 | |
| 56 |