Initial git commit of kernel code from latest version in fossil. This only includes the base kernel code and LICENSE, not any makefiles or dependencies from libc etc. (the build environment itself hasn't been moved over to git yet)

string.c

@@ -0,0 +1,82 @@
+// TODO: CHECK/REPLACE/UPDATE OLD CODE (this file is based on xv6)
+#include "types.h"
+
+#define KERNEL_MODE
+#include <libc/string.c>
+
+int
+memcmp(const void *v1, const void *v2, uint n)
+{
+  const uchar *s1, *s2;
+
+  s1 = v1;
+  s2 = v2;
+  while(n-- > 0){
+    if(*s1 != *s2)
+      return *s1 - *s2;
+    s1++, s2++;
+  }
+
+  return 0;
+}
+
+void*
+memmove(void *dst, const void *src, uint n)
+{
+  const char *s;
+  char *d;
+
+  if(n == 0)
+    return dst;
+  
+  s = src;
+  d = dst;
+  if(s < d && s + n > d){
+    s += n;
+    d += n;
+    while(n-- > 0)
+      *--d = *--s;
+  } else {
+	#ifdef _ZCC
+	//if (n >= 8 && (d + n < s || s + n < d)) {
+  //    return memcpy_opt(dst, src, n);
+		/*uint smalln = n %8;
+		uint bign = n - smalln;
+		memcpy_quick64(dst, src, bign);
+		d += bign;
+		s += bign;
+		n = smalln;*/
+	//}
+	#endif
+    while(n-- > 0)
+      *d++ = *s++;
+  }
+
+  return dst;
+}
+
+int
+strncmp(const char *p, const char *q, uint n)
+{
+  while(n > 0 && *p && *p == *q)
+    n--, p++, q++;
+  if(n == 0)
+    return 0;
+  return (uchar)*p - (uchar)*q;
+}
+
+// Like strncpy but guaranteed to NUL-terminate.
+char*
+safestrcpy(char *s, const char *t, int n)
+{
+  char *os;
+
+  os = s;
+  if(n <= 0)
+    return os;
+  while(--n > 0 && (*s++ = *t++) != 0)
+    ;
+  *s = 0;
+  return os;
+}
+