move memset() implementation to strings.c

1 files changed, 15 insertions, 0 deletions

diff --git a/strings.c b/strings.c
index 94cb6ac..b518388 100644
--- a/strings.c
+++ b/strings.c
@@ -91,3 +91,18 @@ void memcpy(void *dst, void *src, size_t nbytes)
   for (iter *= 4; iter < nbytes; iter++)
     ((volatile uint8_t*) dst)[iter] = ((uint8_t*) src)[iter];
 }
+
+// keep in mind memset is also needed for array initialization, like
+// uint32_t buf[16] = {0};
+// gcc compiles this to memset call
+
+void *memset(void *s, int c, size_t n)
+{
+  volatile char *mem = s;
+  
+  for (size_t i = 0; i < n; i++)
+    mem[i] = c;
+  
+  return s;
+}
+