From 90f1927f14e9cdbae37981af728af8e727838069 Mon Sep 17 00:00:00 2001
From: Peter Kjellerstedt <peter.kjellerstedt@axis.com>
Date: Wed, 21 Nov 2007 12:34:41 +0000
Subject: Added optimized versions of strcpy() and strncpy() for CRIS/CRISv32.
---
libc/string/cris/strcpy.c | 51 ++++++++++++++++++++++++++++++++++++++
libc/string/cris/strncpy.c | 61 ++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 112 insertions(+)
create mode 100644 libc/string/cris/strcpy.c
create mode 100644 libc/string/cris/strncpy.c
diff --git a/libc/string/cris/strcpy.c b/libc/string/cris/strcpy.c
new file mode 100644
index 000000000..0af25253e
--- /dev/null
+++ b/libc/string/cris/strcpy.c
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2006-2007 Axis Communications AB
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <string.h>
+
+libc_hidden_proto(strcpy)
+char *strcpy(char *dest, const char *src)
+{
+ char *ret = dest;
+ unsigned long himagic = 0x80808080L;
+ unsigned long lomagic = 0x01010101L;
+
+ while ((unsigned long)src & (sizeof src - 1))
+ {
+ if (!(*dest++ = *src++))
+ {
+ return ret;
+ }
+ }
+
+ while (1)
+ {
+ unsigned long value = *(unsigned long*)src;
+ unsigned long magic;
+
+ src += sizeof (unsigned long);
+
+ if ((magic = (value - lomagic) & himagic))
+ {
+ if (magic & ~value)
+ {
+ break;
+ }
+ }
+
+ *(unsigned long*)dest = value;
+ dest += sizeof (unsigned long);
+ }
+
+ src -= sizeof (unsigned long);
+
+ while ((*dest++ = *src++))
+ {
+ }
+
+ return ret;
+}
+libc_hidden_def(strcpy)
diff --git a/libc/string/cris/strncpy.c b/libc/string/cris/strncpy.c
new file mode 100644
index 000000000..93a6608bc
--- /dev/null
+++ b/libc/string/cris/strncpy.c
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2006-2007 Axis Communications AB
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <string.h>
+
+libc_hidden_proto(memset)
+
+libc_hidden_proto(strncpy)
+char *strncpy(char *dest, const char *src, size_t count)
+{
+ char *ret = dest;
+ unsigned long himagic = 0x80808080L;
+ unsigned long lomagic = 0x01010101L;
+
+ while (count && (unsigned long)src & (sizeof src - 1))
+ {
+ count--;
+ if (!(*dest++ = *src++))
+ {
+ goto finalize;
+ }
+ }
+
+ while (count >= sizeof (unsigned long))
+ {
+ unsigned long value = *(unsigned long*)src;
+ unsigned long magic;
+
+ if ((magic = (value - lomagic) & himagic))
+ {
+ if (magic & ~value)
+ {
+ break;
+ }
+ }
+
+ *(unsigned long*)dest = value;
+ dest += sizeof (unsigned long);
+ src += sizeof (unsigned long);
+ count -= sizeof (unsigned long);
+ }
+
+ while (count)
+ {
+ count--;
+ if (!(*dest++ = *src++))
+ break;
+ }
+
+finalize:
+ if (count)
+ {
+ memset(dest, '\0', count);
+ }
+
+ return ret;
+}
+libc_hidden_def(strncpy)
--
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