start on MP; detect MP configuration

1 files changed, 15 insertions, 0 deletions

diff --git a/string.c b/string.c
index f27b025..40019d5 100644
--- a/string.c
+++ b/string.c
@@ -23,3 +23,18 @@ memset(void *dst, int c, unsigned n)
 
   return dst;
 }
+
+int
+memcmp(const void *v1, const void *v2, unsigned n)
+{
+  const uint8_t *s1 = (const uint8_t *) v1;
+  const uint8_t *s2 = (const uint8_t *) v2;
+
+  while (n-- > 0) {
+    if (*s1 != *s2)
+      return (int) *s1 - (int) *s2;
+    s1++, s2++;
+  }
+
+  return 0;
+}