first commit

1 files changed, 47 insertions, 0 deletions

diff --git a/src/kernel/libs/libc.c b/src/kernel/libs/libc.c
new file mode 100644
index 0000000..31580ff
--- /dev/null
+++ b/src/kernel/libs/libc.c
@@ -0,0 +1,47 @@
+#include <stddef.h>
+#include <stdint.h>
+//#include <printf.h>
+// you need to sort all these into diffrent files! TODO
+int strncmp(const char *s1, const char *s2, unsigned int n) {
+  int i;
+  for(i = 0; ((i <= n) && (s1[i] != '\0') && (s2[i] != '\0')); i++) {
+    if(s1[i] != s2[i]) {
+      return(s1[i] - s2[i]);
+    }
+  }
+  return(s1[i] - s2[i]);
+}
+
+int strcmp(const char *s1, const char *s2) {
+  int i;
+  for(i = 0; ((s1[i] != '\0') && (s2[i] != '\0')); i++) {
+    if(s1[i] != s2[i]) {
+      return(s1[i] - s2[i]);
+    }
+  }
+  return(s1[i] - s2[i]);
+}
+
+int memcmp(const void *s1, const void *s2, size_t n) {
+  const unsigned char *p1 = s1; // Why is c such a bitch? 
+  const unsigned char *p2 = s2;
+  int i;
+  for(i = 0; i < n; i++) {
+    if(p1[i] != p2[i]) {
+      return(p1[i] - p2[i]);
+    }
+  }
+  return(p1[n-1] - p2[n-1]);
+}
+
+void strcpy(char *dest, char *src) {
+  for(unsigned int i = 0; src[i] != '\0'; i++){
+    dest[i] = src[i];
+  }
+}
+
+void memcpy(char *dest, char *src, size_t n) {
+  for(unsigned int i = 0; i <= n; i++) {
+    dest[i] = src[i];
+  }
+}