From 42c6af83ec7e26983f1ecdefc81ea481a2354cb4 Mon Sep 17 00:00:00 2001
From: Ada Christine <adachristine18@gmail.com>
Date: Mon, 29 Mar 2021 01:41:50 +0000
Subject: don't echo command spam move common files to new source add VPATH to
 loader and kernel makefiles for common source

---
 lib/memcmp.c  | 16 ++++++++++++++++
 lib/memcpy.c  | 12 ++++++++++++
 lib/memmove.c | 20 ++++++++++++++++++++
 lib/memset.c  | 11 +++++++++++
 4 files changed, 59 insertions(+)
 create mode 100644 lib/memcmp.c
 create mode 100644 lib/memcpy.c
 create mode 100644 lib/memmove.c
 create mode 100644 lib/memset.c

(limited to 'lib')

diff --git a/lib/memcmp.c b/lib/memcmp.c
new file mode 100644
index 0000000..2348afe
--- /dev/null
+++ b/lib/memcmp.c
@@ -0,0 +1,16 @@
+/* Public domain.  */
+#include <stddef.h>
+
+int
+memcmp (const void *str1, const void *str2, size_t count)
+{
+  const unsigned char *s1 = str1;
+  const unsigned char *s2 = str2;
+
+  while (count-- > 0)
+    {
+      if (*s1++ != *s2++)
+	  return s1[-1] < s2[-1] ? -1 : 1;
+    }
+  return 0;
+}
diff --git a/lib/memcpy.c b/lib/memcpy.c
new file mode 100644
index 0000000..58b1e40
--- /dev/null
+++ b/lib/memcpy.c
@@ -0,0 +1,12 @@
+/* Public domain.  */
+#include <stddef.h>
+
+void *
+memcpy (void *dest, const void *src, size_t len)
+{
+  char *d = dest;
+  const char *s = src;
+  while (len--)
+    *d++ = *s++;
+  return dest;
+}
diff --git a/lib/memmove.c b/lib/memmove.c
new file mode 100644
index 0000000..fd06bb6
--- /dev/null
+++ b/lib/memmove.c
@@ -0,0 +1,20 @@
+/* Public domain.  */
+#include <stddef.h>
+
+void *
+memmove (void *dest, const void *src, size_t len)
+{
+  char *d = dest;
+  const char *s = src;
+  if (d < s)
+    while (len--)
+      *d++ = *s++;
+  else
+    {
+      const char *lasts = s + (len-1);
+      char *lastd = d + (len-1);
+      while (len--)
+        *lastd-- = *lasts--;
+    }
+  return dest;
+}
diff --git a/lib/memset.c b/lib/memset.c
new file mode 100644
index 0000000..3e7025e
--- /dev/null
+++ b/lib/memset.c
@@ -0,0 +1,11 @@
+/* Public domain.  */
+#include <stddef.h>
+
+void *
+memset (void *dest, int val, size_t len)
+{
+  unsigned char *ptr = dest;
+  while (len-- > 0)
+    *ptr++ = val;
+  return dest;
+}
-- 
cgit v1.3.1-1-g115d