Felix
f0dc3a3433
The CNPL will make sure that absolutely no corporation is going to get anywhere near Ardix -- exactly as it should be. Fuck you, corporations!
132 lines
2.4 KiB
C
132 lines
2.4 KiB
C
/* See the end of this file for copyright, license, and warranty information. */
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#include <ardix/types.h>
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#include <stdbool.h>
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#include <string.h>
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#include <toolchain.h>
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#ifndef __HAVE_ASM_MEMCMP
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int memcmp(const void *s1, const void *s2, size_t n)
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{
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int delta = 0;
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while (n-- > 0) {
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delta = *(const unsigned char *)s1++ - *(const unsigned char *)s2++;
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if (delta != 0)
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break;
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}
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return delta;
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}
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#endif /* __HAVE_ASM_MEMCMP */
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#ifndef __HAVE_ASM_MEMCPY
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void *memcpy(void *dest, const void *src, size_t n)
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{
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uint8_t *tmp = (uint8_t *)dest;
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while (n-- > 0)
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*tmp++ = *(const uint8_t *)src++;
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return dest;
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}
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#endif /* __HAVE_ASM_MEMCPY */
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#ifndef __HAVE_ASM_MEMSET
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void *memset(void *ptr, int c, size_t n)
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{
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char *tmp = (char *)ptr;
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while (n-- > 0)
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*tmp++ = (char)c;
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return ptr;
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}
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#endif /* __HAVE_ASM_MEMSET */
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#ifndef __HAVE_ASM_MEMMOVE
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void *memmove(void *dest, const void *src, size_t n)
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{
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char *tmp = (char *)dest;
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const char *s = (const char *)src;
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if (dest == src)
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return dest;
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if (dest < src) {
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while (n-- != 0)
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*tmp++ = *s++;
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} else {
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tmp += n;
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s += n;
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while (n-- != 0)
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*--tmp = *--s;
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}
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return dest;
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}
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#endif /* __HAVE_ASM_MEMMOVE */
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#ifndef __HAVE_ASM_STRCMP
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int strcmp(const char *s1, const char *s2)
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{
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while (*s1++ == *s2++) {
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if (*s1 == '\0' || *s2 == '\0')
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break;
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}
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return *((const unsigned char *)s1) - *((const unsigned char *)s2);
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}
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#endif /* __HAVE_ASM_STRCMP */
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#ifndef __HAVE_ASM_STRCPY
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char *strcpy(char *dest, const char *src)
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{
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char *tmp = dest;
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while ((*tmp++ = *src++) != '\0');
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/* nothing */
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return dest;
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}
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#endif /* __HAVE_ASM_STRCPY */
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#ifndef __HAVE_ASM_STRNCPY
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char *strncpy(char *dest, const char *src, size_t n)
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{
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char *tmp = dest;
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while (n-- != 0) {
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if ((*tmp++ = *src++) == '\0')
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break;
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}
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return dest;
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}
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#endif /* __HAVE_ASM_STRNCPY */
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#ifndef __HAVE_ASM_STRLEN
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size_t strlen(const char *s)
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{
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const char *tmp = s;
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while (*tmp++ != '\0');
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/* nothing */
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return (size_t)tmp - (size_t)s - (size_t)1;
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}
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#endif /* __HAVE_ASM_STRLEN */
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/*
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* This file is part of Ardix.
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* Copyright (c) 2020, 2021 Felix Kopp <owo@fef.moe>.
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*
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* Ardix is non-violent software: you may only use, redistribute,
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* and/or modify it under the terms of the CNPLv6+ as found in
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* the LICENSE file in the source code root directory or at
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* <https://git.pixie.town/thufie/CNPL>.
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*
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* Ardix comes with ABSOLUTELY NO WARRANTY, to the extent
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* permitted by applicable law. See the CNPLv6+ for details.
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*/
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