diff options
Diffstat (limited to 'zap/src/memfill.c')
-rw-r--r-- | zap/src/memfill.c | 60 |
1 files changed, 0 insertions, 60 deletions
diff --git a/zap/src/memfill.c b/zap/src/memfill.c deleted file mode 100644 index 1aebd29..0000000 --- a/zap/src/memfill.c +++ /dev/null @@ -1,60 +0,0 @@ -/* - Copyright 2022 Gabriel Jensen. - This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. - If a copy of the MPL was not distributed with this file, You can obtain one at https://mozilla.org/MPL/2.0/. -*/ - -#include <zap/priv.h> - -#include <zap/mem.h> - -#include <stddef.h> -#include <stdint.h> - -#if zap_priv_fastimpl -__asm__ ( - ".globl zap_memfill\n" - - "zap_memfill:\n" - /* - void const * ptr - size_t num - unsigned char val - */ -#if defined(sus_arch_amd64) - /* rdi: Address of the current element. */ - /* rsi: Address of the element after the last element. */ - "addq %rdi,%rsi\n" - ".loop:\n" - "cmpq %rdi,%rsi\n" - "je .done\n" /* Exit loop if we have reached the final element. */ - "movb %dl,(%rdi)\n" - "incq %rdi\n" - "jmp .loop\n" /* Continue to next element. */ - ".done:\n" - "ret\n" -#elif defined(sus_arch_ia32) - /* eax: Address of the current element. */ - "movl 0x4(%esp),%eax\n" - /* ecx: Address of the element after the last element. */ - "movl 0x4(%esp),%ecx\n" - "addl 0x8(%esp),%ecx\n" - /* edx: Byte value. */ - "movb 0xC(%esp),%dl\n" - ".loop:\n" - "cmpl %eax,%ecx\n" - "je .done\n" /* Exit loop if we have reached the final element. */ - "movb %dl,(%eax)\n" - "incl %eax\n" - "jmp .loop\n" /* Continue to next element. */ - ".done:\n" - "ret\n" -#endif -); -#else -void zap_memfill(void * const _ptr,size_t const _num,unsigned char const _byte) { - unsigned char * pos = _ptr; - unsigned char * const afterbuf = pos + _num; - for (;pos != afterbuf;++pos) {*pos = _byte;} -} -#endif |