1 files changed, 46 insertions, 0 deletions

diff --git a/arch/mips/boot/compressed/string.c b/arch/mips/boot/compressed/string.c
new file mode 100644
index 000000000..0b593b709
--- /dev/null
+++ b/arch/mips/boot/compressed/string.c
@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * arch/mips/boot/compressed/string.c
+ *
+ * Very small subset of simple string routines
+ */
+
+#include <linux/compiler_attributes.h>
+#include <linux/types.h>
+
+void *memcpy(void *dest, const void *src, size_t n)
+{
+        int i;
+        const char *s = src;
+        char *d = dest;
+
+        for (i = 0; i < n; i++)
+                d[i] = s[i];
+        return dest;
+}
+
+void *memset(void *s, int c, size_t n)
+{
+        int i;
+        char *ss = s;
+
+        for (i = 0; i < n; i++)
+                ss[i] = c;
+        return s;
+}
+
+void * __weak memmove(void *dest, const void *src, size_t n)
+{
+        unsigned int i;
+        const char *s = src;
+        char *d = dest;
+
+        if ((uintptr_t)dest < (uintptr_t)src) {
+                for (i = 0; i < n; i++)
+                        d[i] = s[i];
+        } else {
+                for (i = n; i > 0; i--)
+                        d[i - 1] = s[i - 1];
+        }
+        return dest;
+}