summaryrefslogtreecommitdiff
path: root/arch/m68k/include/uapi/asm/swab.h
diff options
context:
space:
mode:
authorCatalin Marinas <catalin.marinas@arm.com>2012-11-05 14:58:32 +0000
committerCatalin Marinas <catalin.marinas@arm.com>2012-11-05 14:58:32 +0000
commit3fd9396af83a1e69eaf9ebb573207431d8f265b6 (patch)
treef221f5777695de71ea97423c67438bca1746e26c /arch/m68k/include/uapi/asm/swab.h
parente3978cded41dc7b364e74037f56d6bc558c11fd7 (diff)
parent3d70f8c617a436c7146ecb81df2265b4626dfe89 (diff)
Merge tag 'v3.7-rc4' into upstream-master
Linux 3.7-rc4
Diffstat (limited to 'arch/m68k/include/uapi/asm/swab.h')
-rw-r--r--arch/m68k/include/uapi/asm/swab.h27
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/m68k/include/uapi/asm/swab.h b/arch/m68k/include/uapi/asm/swab.h
new file mode 100644
index 000000000000..b7b37a40defc
--- /dev/null
+++ b/arch/m68k/include/uapi/asm/swab.h
@@ -0,0 +1,27 @@
+#ifndef _M68K_SWAB_H
+#define _M68K_SWAB_H
+
+#include <linux/types.h>
+#include <linux/compiler.h>
+
+#define __SWAB_64_THRU_32__
+
+#if defined (__mcfisaaplus__) || defined (__mcfisac__)
+static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
+{
+ __asm__("byterev %0" : "=d" (val) : "0" (val));
+ return val;
+}
+
+#define __arch_swab32 __arch_swab32
+#elif !defined(__mcoldfire__)
+
+static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
+{
+ __asm__("rolw #8,%0; swap %0; rolw #8,%0" : "=d" (val) : "0" (val));
+ return val;
+}
+#define __arch_swab32 __arch_swab32
+#endif
+
+#endif /* _M68K_SWAB_H */