[PATCH v2 09/20] lib: move strcmp()

[Jan Beulich <jbeulich@suse.com>]

Allow the function to be individually linkable, discardable, and
overridable.

Signed-off-by: Jan Beulich <jbeulich@suse.com>

--- a/xen/common/string.c
+++ b/xen/common/string.c
@@ -111,25 +111,6 @@ size_t strlcat(char *dest, const char *s
 EXPORT_SYMBOL(strlcat);
 #endif
 
-#ifndef __HAVE_ARCH_STRCMP
-/**
- * strcmp - Compare two strings
- * @cs: One string
- * @ct: Another string
- */
-int (strcmp)(const char *cs, const char *ct)
-{
-	register signed char __res;
-
-	while (1) {
-		if ((__res = *cs - *ct++) != 0 || !*cs++)
-			break;
-	}
-
-	return __res;
-}
-#endif
-
 #ifndef __HAVE_ARCH_STRNCMP
 /**
  * strncmp - Compare two length-limited strings
--- a/xen/lib/Makefile
+++ b/xen/lib/Makefile
@@ -14,6 +14,7 @@ lib-y += muldiv64.o
 lib-y += parse-size.o
 lib-y += rbtree.o
 lib-y += sort.o
+lib-y += strcmp.o
 lib-y += strlen.o
 lib-y += strnlen.o
 lib-$(CONFIG_X86) += xxhash32.o
--- /dev/null
+++ b/xen/lib/strcmp.c
@@ -0,0 +1,32 @@
+/*
+ *  Copyright (C) 1991, 1992  Linus Torvalds
+ */
+
+#include <xen/string.h>
+
+/**
+ * strcmp - Compare two strings
+ * @cs: One string
+ * @ct: Another string
+ */
+int (strcmp)(const char *cs, const char *ct)
+{
+	register signed char __res;
+
+	while (1) {
+		if ((__res = *cs - *ct++) != 0 || !*cs++)
+			break;
+	}
+
+	return __res;
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 8
+ * tab-width: 8
+ * indent-tabs-mode: t
+ * End:
+ */