b3b77c8cae
Linux does not define __BYTE_ORDER in its endian header files which makes some header files bend backwards to get at the current endian. Lets #define __BYTE_ORDER in big_endian.h/litte_endian.h to make it easier for header files that are used in user space too. In userspace the convention is that 1. _both_ __LITTLE_ENDIAN and __BIG_ENDIAN are defined, 2. you have to test for e.g. __BYTE_ORDER == __BIG_ENDIAN. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
68 lines
2.3 KiB
C
68 lines
2.3 KiB
C
/*
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* These are copied from glibc/stdlib/longlong.h
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*/
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#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
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do { \
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UWtype __x; \
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__x = (al) + (bl); \
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(sh) = (ah) + (bh) + (__x < (al)); \
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(sl) = __x; \
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} while (0)
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#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
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do { \
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UWtype __x; \
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__x = (al) - (bl); \
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(sh) = (ah) - (bh) - (__x > (al)); \
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(sl) = __x; \
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} while (0)
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#define umul_ppmm(w1, w0, u, v) \
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__asm__ ("dmulu.l %2,%3\n\tsts macl,%1\n\tsts mach,%0" \
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: "=r" ((u32)(w1)), "=r" ((u32)(w0)) \
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: "r" ((u32)(u)), "r" ((u32)(v)) \
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: "macl", "mach")
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#define __ll_B ((UWtype) 1 << (W_TYPE_SIZE / 2))
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#define __ll_lowpart(t) ((UWtype) (t) & (__ll_B - 1))
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#define __ll_highpart(t) ((UWtype) (t) >> (W_TYPE_SIZE / 2))
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#define udiv_qrnnd(q, r, n1, n0, d) \
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do { \
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UWtype __d1, __d0, __q1, __q0; \
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UWtype __r1, __r0, __m; \
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__d1 = __ll_highpart (d); \
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__d0 = __ll_lowpart (d); \
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\
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__r1 = (n1) % __d1; \
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__q1 = (n1) / __d1; \
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__m = (UWtype) __q1 * __d0; \
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__r1 = __r1 * __ll_B | __ll_highpart (n0); \
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if (__r1 < __m) \
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{ \
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__q1--, __r1 += (d); \
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if (__r1 >= (d)) /* i.e. we didn't get carry when adding to __r1 */\
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if (__r1 < __m) \
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__q1--, __r1 += (d); \
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} \
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__r1 -= __m; \
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\
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__r0 = __r1 % __d1; \
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__q0 = __r1 / __d1; \
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__m = (UWtype) __q0 * __d0; \
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__r0 = __r0 * __ll_B | __ll_lowpart (n0); \
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if (__r0 < __m) \
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{ \
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__q0--, __r0 += (d); \
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if (__r0 >= (d)) \
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if (__r0 < __m) \
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__q0--, __r0 += (d); \
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} \
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__r0 -= __m; \
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\
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(q) = (UWtype) __q1 * __ll_B | __q0; \
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(r) = __r0; \
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} while (0)
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#define abort() return 0
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