xyou
f1a2a110d7
Add the current OS source tree, build scripts, system image layout, and development notes covering DMA page allocation, e1000 bring-up, net API dispatch, and DHCP work in progress.
38 lines
751 B
C
38 lines
751 B
C
#include <utsm/types.h>
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void *memset(void *dst, int value, usize len) {
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u8 *d = (u8 *)dst;
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for (usize i = 0; i < len; i++) {
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d[i] = (u8)value;
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}
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return dst;
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}
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void *memcpy(void *dst, const void *src, usize len) {
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u8 *d = (u8 *)dst;
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const u8 *s = (const u8 *)src;
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for (usize i = 0; i < len; i++) {
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d[i] = s[i];
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}
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return dst;
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}
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int memcmp(const void *a, const void *b, usize len) {
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const u8 *x = (const u8 *)a;
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const u8 *y = (const u8 *)b;
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for (usize i = 0; i < len; i++) {
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if (x[i] != y[i]) {
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return (int)x[i] - (int)y[i];
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}
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}
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return 0;
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}
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usize strlen(const char *s) {
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usize len = 0;
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while (s[len]) {
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len++;
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}
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return len;
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}
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