The patch titled
byteorder: x86: use the new byteorder headers
has been added to the -mm tree. Its filename is
byteorder-x86-use-the-new-byteorder-headers.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: byteorder: x86: use the new byteorder headers
From: Harvey Harrison <harvey.harrison@xxxxxxxxx>
Signed-off-by: Harvey Harrison <harvey.harrison@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/asm-x86/byteorder.h | 69 +++++++++++++---------------------
1 file changed, 27 insertions(+), 42 deletions(-)
diff -puN include/asm-x86/byteorder.h~byteorder-x86-use-the-new-byteorder-headers include/asm-x86/byteorder.h
--- a/include/asm-x86/byteorder.h~byteorder-x86-use-the-new-byteorder-headers
+++ a/include/asm-x86/byteorder.h
@@ -4,26 +4,33 @@
#include <asm/types.h>
#include <linux/compiler.h>
-#ifdef __GNUC__
+#define __LITTLE_ENDIAN
-#ifdef __i386__
-
-static inline __attribute_const__ __u32 ___arch__swab32(__u32 x)
+static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
{
-#ifdef CONFIG_X86_BSWAP
- asm("bswap %0" : "=r" (x) : "0" (x));
-#else
+#ifdef __i386__
+# ifdef CONFIG_X86_BSWAP
+ asm("bswap %0" : "=r" (val) : "0" (val));
+# else
asm("xchgb %b0,%h0\n\t" /* swap lower bytes */
"rorl $16,%0\n\t" /* swap words */
"xchgb %b0,%h0" /* swap higher bytes */
- : "=q" (x)
- : "0" (x));
+ : "=q" (val)
+ : "0" (val));
+# endif
+
+#else /* __i386__ */
+ asm("bswapl %0"
+ : "=r" (val)
+ : "0" (val));
#endif
- return x;
+ return val;
}
+#define __arch_swab32 __arch_swab32
-static inline __attribute_const__ __u64 ___arch__swab64(__u64 val)
+static inline __attribute_const__ __u64 __arch_swab64(__u64 val)
{
+#ifdef __i386__
union {
struct {
__u32 a;
@@ -32,50 +39,28 @@ static inline __attribute_const__ __u64
__u64 u;
} v;
v.u = val;
-#ifdef CONFIG_X86_BSWAP
+# ifdef CONFIG_X86_BSWAP
asm("bswapl %0 ; bswapl %1 ; xchgl %0,%1"
: "=r" (v.s.a), "=r" (v.s.b)
: "0" (v.s.a), "1" (v.s.b));
-#else
+# else
v.s.a = ___arch__swab32(v.s.a);
v.s.b = ___arch__swab32(v.s.b);
asm("xchgl %0,%1"
: "=r" (v.s.a), "=r" (v.s.b)
: "0" (v.s.a), "1" (v.s.b));
-#endif
+# endif
return v.u;
-}
#else /* __i386__ */
-
-static inline __attribute_const__ __u64 ___arch__swab64(__u64 x)
-{
asm("bswapq %0"
- : "=r" (x)
- : "0" (x));
- return x;
-}
-
-static inline __attribute_const__ __u32 ___arch__swab32(__u32 x)
-{
- asm("bswapl %0"
- : "=r" (x)
- : "0" (x));
- return x;
-}
-
+ : "=r" (val)
+ : "0" (val));
+ return val;
#endif
+}
+#define __arch_swab64 __arch_swab64
-/* Do not define swab16. Gcc is smart enough to recognize "C" version and
- convert it into rotation or exhange. */
-
-#define __arch__swab64(x) ___arch__swab64(x)
-#define __arch__swab32(x) ___arch__swab32(x)
-
-#define __BYTEORDER_HAS_U64__
-
-#endif /* __GNUC__ */
-
-#include <linux/byteorder/little_endian.h>
+#include <linux/byteorder.h>
#endif /* _ASM_X86_BYTEORDER_H */
_
Patches currently in -mm which might be from harvey.harrison@xxxxxxxxx are
byteorder-add-a-new-include-linux-swabh-to-define-byteswapping-functions.patch
byteorder-add-include-linux-byteorderh-to-define-endian-helpers.patch
linux-next.patch
x86-fix-shadowed-variable-warning.patch
cifs-remove-global_extern-macro.patch
ppc-use-the-common-ascii-hex-helpers.patch
powerpc-replace-__function__-with-__func__.patch
v4l-drx397xdc-sparse-annotations.patch
input-ads7846c-sparse-lock-annotation.patch
kvm-make-functions-static.patch
misdn-endian-annotations-for-struct-zt.patch
misdn-annotate-iomem-pointer-and-add-statics.patch
drivers-net-replace-__function__-with-__func__.patch
scsi-replace-__inline-with-inline.patch
scsi-aic79xx_core-fix-shadowed-variables-add-statics.patch
scsi-aic79xx-aic79xx_pcic-fix-shadowed-variables.patch
scsi-gdthc-use-unaligned-access-helpers.patch
scsi-use-the-common-hex_asc-array-rather-than-a-private-one.patch
wireless-replace-__function__-with-__func__.patch
xfs-use-get_unaligned_-helpers.patch
xtensa-replace-remaining-__function__-occurences.patch
olpc-olpc_batteryc-sparse-endian-annotations.patch
include-replace-__function__-with-__func__.patch
misc-replace-__function__-with-__func__.patch
befs-annotate-fs32-on-tests-for-superblock-endianness.patch
byteorder-alpha-use-the-new-byteorder-headers.patch
byteorder-arm-use-the-new-byteorder-headers.patch
byteorder-avr32-use-the-new-byteorder-headers.patch
byteorder-blackfin-use-the-new-byteorder-headers.patch
byteorder-cris-use-the-new-byteorder-headers.patch
byteorder-frv-use-the-new-byteorder-headers.patch
byteorder-h8300-use-the-new-byteorder-headers.patch
byteorder-ia64-use-the-new-byteorder-headers.patch
byteorder-m32r-use-the-new-byteorder-headers.patch
byteorder-m68k-use-the-new-byteorder-headers.patch
byteorder-m68knommu-use-the-new-byteorder-headers.patch
byteorder-mips-use-the-new-byteorder-headers.patch
byteorder-mn10300-use-the-new-byteorder-headers.patch
byteorder-parisc-use-the-new-byteorder-headers.patch
byteorder-powerpc-use-the-new-byteorder-headers.patch
byteorder-s390-use-the-new-byteorder-headers.patch
byteorder-sh-use-the-new-byteorder-headers.patch
byteorder-sparc-use-the-new-byteorder-headers.patch
byteorder-x86-use-the-new-byteorder-headers.patch
byteorder-xtensa-use-the-new-byteorder-headers.patch
byteorder-fix-direct-byteswap-includes.patch
byteorder-remove-the-old-byteorder-implementation.patch
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