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author | Jon Santmyer <jon@jonsantmyer.com> | 2024-03-11 21:30:31 -0400 |
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committer | Jon Santmyer <jon@jonsantmyer.com> | 2024-03-11 21:30:31 -0400 |
commit | d1ff7bcc91886626dc9060ec5fb67ee102ab7c1d (patch) | |
tree | 8f0b5cd8aad31089131785dc6e37b659490f9955 /lib/mem.c | |
download | jove-kernel-d1ff7bcc91886626dc9060ec5fb67ee102ab7c1d.tar.gz jove-kernel-d1ff7bcc91886626dc9060ec5fb67ee102ab7c1d.tar.bz2 jove-kernel-d1ff7bcc91886626dc9060ec5fb67ee102ab7c1d.zip |
usermode capable kernel with logging syscall
Diffstat (limited to 'lib/mem.c')
-rw-r--r-- | lib/mem.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/lib/mem.c b/lib/mem.c new file mode 100644 index 0000000..b60fbbd --- /dev/null +++ b/lib/mem.c @@ -0,0 +1,52 @@ +#include "string.h" +#include "mem/memory.h" + +void* +memset(void *dest, int c, size_t n) +{ + char *destc = (char*)dest; + for(size_t i = 0; i < n; i++) + destc[i] = c; + return dest; +} + +void* +memcpy(void *dest, const void *src, size_t n) +{ + char *destc = (char*)dest; + const char *srcc = (const char*)src; + for(size_t i = 0; i < n; i++) + destc[i] = srcc[i]; + return dest; +} + +void* +memmove(void *dest, const void *src, size_t n) +{ + char *destc = (char*)dest; + const char *srcc = (const char*)src; + if(destc + n < srcc) return memcpy(dest, src, n); + char buffer[n]; + memcpy(buffer, src, n); + return memcpy(destc, buffer, n); +} + +int +memcmp(const void *a, const void *b, size_t n) +{ + const char *ac = (const char*)a; + const char *bc = (const char*)b; + for(size_t i = 0; i < n; i++) { + if(ac[i] != bc[i]) return ac[i] - bc[i]; + } + return 0; +} + +char* +strdup(const char *s) +{ + size_t slen = strlen(s); + char *ret = mem_alloc(slen); + memcpy(ret, s, slen); + return ret; +} |