linux/arch/alpha/math-emu/sfp-util.h
Linus Torvalds 13da9e200f Revert "endian: #define __BYTE_ORDER"
This reverts commit b3b77c8cae, which was
also totally broken (see commit 0d2daf5cc8 that reverted the crc32
version of it).  As reported by Stephen Rothwell, it causes problems on
big-endian machines:

> In file included from fs/jfs/jfs_types.h:33,
>                  from fs/jfs/jfs_incore.h:26,
>                  from fs/jfs/file.c:22:
> fs/jfs/endian24.h:36:101: warning: "__LITTLE_ENDIAN" is not defined

The kernel has never had that crazy "__BYTE_ORDER == __LITTLE_ENDIAN"
model.  It's not how we do things, and it isn't how we _should_ do
things.  So don't go there.

Requested-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-26 08:30:15 -07:00

35 lines
969 B
C

#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/types.h>
#include <asm/byteorder.h>
#include <asm/fpu.h>
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
((sl) = (al) + (bl), (sh) = (ah) + (bh) + ((sl) < (al)))
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
((sl) = (al) - (bl), (sh) = (ah) - (bh) - ((al) < (bl)))
#define umul_ppmm(wh, wl, u, v) \
__asm__ ("mulq %2,%3,%1; umulh %2,%3,%0" \
: "=r" ((UDItype)(wh)), \
"=&r" ((UDItype)(wl)) \
: "r" ((UDItype)(u)), \
"r" ((UDItype)(v)))
#define udiv_qrnnd(q, r, n1, n0, d) \
do { unsigned long __r; \
(q) = __udiv_qrnnd (&__r, (n1), (n0), (d)); \
(r) = __r; \
} while (0)
extern unsigned long __udiv_qrnnd (unsigned long *, unsigned long,
unsigned long , unsigned long);
#define UDIV_NEEDS_NORMALIZATION 1
#define abort() goto bad_insn
#ifndef __LITTLE_ENDIAN
#define __LITTLE_ENDIAN -1
#endif
#define __BYTE_ORDER __LITTLE_ENDIAN