From ca4f5906f284e60a7a59ca7450e3e09c4f9356e5 Mon Sep 17 00:00:00 2001 From: Alexis211 Date: Mon, 5 Apr 2010 20:32:08 +0200 Subject: Some stuff added to userland. --- src/library/std/string.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 src/library/std/string.c (limited to 'src/library/std') diff --git a/src/library/std/string.c b/src/library/std/string.c new file mode 100644 index 0000000..869256a --- /dev/null +++ b/src/library/std/string.c @@ -0,0 +1,39 @@ +#include + +int strlen(const char *str) { + int i = 0; + while (str[i++]); + return i; +} + +void *memcpy(void *vd, const void *vs, int count) { + uint8_t *dest = (uint8_t*)vd, *src = (uint8_t*)vs; + uint32_t f = count % 4, n = count / 4, i; + const uint32_t* s = (uint32_t*)src; + uint32_t* d = (uint32_t*)dest; + for (i = 0; i < n; i++) { + d[i] = s[i]; + } + if (f != 0) { + for (i = count - f; i < count; i++) { + dest[i] = src[i]; + } + } + return vd; +} + +uint8_t *memset(uint8_t *dest, uint8_t val, int count) { + int i; + for (i = 0; i < count; i++) { + dest[i] = val; + } + return dest; +} + +uint16_t *memsetw(uint16_t *dest, uint16_t val, int count) { + int i; + for (i = 0; i < count; i++) { + dest[i] = val; + } + return dest; +} -- cgit v1.2.3