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authorMauro Carvalho Chehab <mchehab@redhat.com>2012-10-17 09:32:49 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-10-17 09:32:49 -0300
commit214e2ca2b82d335935a861c253fe94c61ad77aad (patch)
treeeee42ff74d10470789d919b8499737ad0e919360 /arch/mips/include/uapi/asm/swab.h
parent1fdead8ad31d3aa833bc37739273fcde89ace93c (diff)
parentddffeb8c4d0331609ef2581d84de4d763607bd37 (diff)
Merge tag 'v3.7-rc1' into staging/for_v3.8
Linux 3.7-rc1 * tag 'v3.7-rc1': (9579 commits) Linux 3.7-rc1 x86, boot: Explicitly include autoconf.h for hostprogs perf: Fix UAPI fallout ARM: config: make sure that platforms are ordered by option string ARM: config: sort select statements alphanumerically UAPI: (Scripted) Disintegrate include/linux/byteorder UAPI: (Scripted) Disintegrate include/linux UAPI: Unexport linux/blk_types.h UAPI: Unexport part of linux/ppp-comp.h perf: Handle new rbtree implementation procfs: don't need a PATH_MAX allocation to hold a string representation of an int vfs: embed struct filename inside of names_cache allocation if possible audit: make audit_inode take struct filename vfs: make path_openat take a struct filename pointer vfs: turn do_path_lookup into wrapper around struct filename variant audit: allow audit code to satisfy getname requests from its names_list vfs: define struct filename and have getname() return it btrfs: Fix compilation with user namespace support enabled userns: Fix posix_acl_file_xattr_userns gid conversion userns: Properly print bluetooth socket uids ...
Diffstat (limited to 'arch/mips/include/uapi/asm/swab.h')
-rw-r--r--arch/mips/include/uapi/asm/swab.h59
1 files changed, 59 insertions, 0 deletions
diff --git a/arch/mips/include/uapi/asm/swab.h b/arch/mips/include/uapi/asm/swab.h
new file mode 100644
index 00000000000..97c2f81b4b4
--- /dev/null
+++ b/arch/mips/include/uapi/asm/swab.h
@@ -0,0 +1,59 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1996, 99, 2003 by Ralf Baechle
+ */
+#ifndef _ASM_SWAB_H
+#define _ASM_SWAB_H
+
+#include <linux/compiler.h>
+#include <linux/types.h>
+
+#define __SWAB_64_THRU_32__
+
+#ifdef CONFIG_CPU_MIPSR2
+
+static inline __attribute_const__ __u16 __arch_swab16(__u16 x)
+{
+ __asm__(
+ " wsbh %0, %1 \n"
+ : "=r" (x)
+ : "r" (x));
+
+ return x;
+}
+#define __arch_swab16 __arch_swab16
+
+static inline __attribute_const__ __u32 __arch_swab32(__u32 x)
+{
+ __asm__(
+ " wsbh %0, %1 \n"
+ " rotr %0, %0, 16 \n"
+ : "=r" (x)
+ : "r" (x));
+
+ return x;
+}
+#define __arch_swab32 __arch_swab32
+
+/*
+ * Having already checked for CONFIG_CPU_MIPSR2, enable the
+ * optimized version for 64-bit kernel on r2 CPUs.
+ */
+#ifdef CONFIG_64BIT
+static inline __attribute_const__ __u64 __arch_swab64(__u64 x)
+{
+ __asm__(
+ " dsbh %0, %1\n"
+ " dshd %0, %0"
+ : "=r" (x)
+ : "r" (x));
+
+ return x;
+}
+#define __arch_swab64 __arch_swab64
+#endif /* CONFIG_64BIT */
+#endif /* CONFIG_CPU_MIPSR2 */
+#endif /* _ASM_SWAB_H */