cpp-d1064d

[cross.git] / i686-linux-gnu-4.7 / usr / include / x86_64-linux-gnu / asm / swab.h

diff --git a/i686-linux-gnu-4.7/usr/include/x86_64-linux-gnu/asm/swab.h b/i686-linux-gnu-4.7/usr/include/x86_64-linux-gnu/asm/swab.h
new file mode 100644 (file)
index 0000000..5353f76
--- /dev/null
+++ b/i686-linux-gnu-4.7/usr/include/x86_64-linux-gnu/asm/swab.h
@@ -0,0 +1,37 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _ASM_X86_SWAB_H
+#define _ASM_X86_SWAB_H
+
+#include <linux/types.h>
+
+
+static __inline__  __u32 __arch_swab32(__u32 val)
+{
+       __asm__("bswapl %0" : "=r" (val) : "0" (val));
+       return val;
+}
+#define __arch_swab32 __arch_swab32
+
+static __inline__  __u64 __arch_swab64(__u64 val)
+{
+#ifdef __i386__
+       union {
+               struct {
+                       __u32 a;
+                       __u32 b;
+               } s;
+               __u64 u;
+       } v;
+       v.u = val;
+       __asm__("bswapl %0 ; bswapl %1 ; xchgl %0,%1"
+           : "=r" (v.s.a), "=r" (v.s.b)
+           : "0" (v.s.a), "1" (v.s.b));
+       return v.u;
+#else /* __i386__ */
+       __asm__("bswapq %0" : "=r" (val) : "0" (val));
+       return val;
+#endif
+}
+#define __arch_swab64 __arch_swab64
+
+#endif /* _ASM_X86_SWAB_H */