[xen staging] lib: move init_constructors()

[patchbot@xxxxxxx]

commit 3b1d8eb4744d210abcd1c033bf07d20345b926ba
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Fri Dec 18 13:22:10 2020 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Fri Dec 18 13:22:10 2020 +0100

    lib: move init_constructors()
    
    ... into its own CU, for being unrelated to other things in
    common/lib.c.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Wei Liu <wl@xxxxxxx>
    Reviewed-by: Bertrand Marquis <bertrand.marquis@xxxxxxx>
---
 xen/common/lib.c | 14 --------------
 xen/lib/Makefile |  1 +
 xen/lib/ctors.c  | 25 +++++++++++++++++++++++++
 3 files changed, 26 insertions(+), 14 deletions(-)

diff --git a/xen/common/lib.c b/xen/common/lib.c
index 6cfa332142..f5ca179a0a 100644
--- a/xen/common/lib.c
+++ b/xen/common/lib.c
@@ -1,6 +1,5 @@
 #include <xen/lib.h>
 #include <xen/types.h>
-#include <xen/init.h>
 #include <asm/byteorder.h>
 
 /*
@@ -423,19 +422,6 @@ uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
 #endif
 }
 
-typedef void (*ctor_func_t)(void);
-extern const ctor_func_t __ctors_start[], __ctors_end[];
-
-void __init init_constructors(void)
-{
-    const ctor_func_t *f;
-    for ( f = __ctors_start; f < __ctors_end; ++f )
-        (*f)();
-
-    /* Putting this here seems as good (or bad) as any other place. */
-    BUILD_BUG_ON(sizeof(size_t) != sizeof(ssize_t));
-}
-
 /*
  * Local variables:
  * mode: C
diff --git a/xen/lib/Makefile b/xen/lib/Makefile
index 99f857540c..72c72fffec 100644
--- a/xen/lib/Makefile
+++ b/xen/lib/Makefile
@@ -1,5 +1,6 @@
 obj-$(CONFIG_X86) += x86/
 
+lib-y += ctors.o
 lib-y += ctype.o
 lib-y += list-sort.o
 lib-y += parse-size.o
diff --git a/xen/lib/ctors.c b/xen/lib/ctors.c
new file mode 100644
index 0000000000..5bdc591cd5
--- /dev/null
+++ b/xen/lib/ctors.c
@@ -0,0 +1,25 @@
+#include <xen/init.h>
+#include <xen/lib.h>
+
+typedef void (*ctor_func_t)(void);
+extern const ctor_func_t __ctors_start[], __ctors_end[];
+
+void __init init_constructors(void)
+{
+    const ctor_func_t *f;
+    for ( f = __ctors_start; f < __ctors_end; ++f )
+        (*f)();
+
+    /* Putting this here seems as good (or bad) as any other place. */
+    BUILD_BUG_ON(sizeof(size_t) != sizeof(ssize_t));
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
--
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