Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/sh/math-emu/sfp-util.h
10817 views
1
/*

2
 * These are copied from glibc/stdlib/longlong.h

3
 */

4


5
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \

6
  do {                                                                  \

7
    UWtype __x;                                                         \

8
    __x = (al) + (bl);                                                  \

9
    (sh) = (ah) + (bh) + (__x < (al));                                  \

10
    (sl) = __x;                                                         \

11
  } while (0)

12


13
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \

14
  do {                                                                  \

15
    UWtype __x;                                                         \

16
    __x = (al) - (bl);                                                  \

17
    (sh) = (ah) - (bh) - (__x > (al));                                  \

18
    (sl) = __x;                                                         \

19
  } while (0)

20


21
#define umul_ppmm(w1, w0, u, v) \

22
  __asm__ ("dmulu.l %2,%3\n\tsts    macl,%1\n\tsts  mach,%0"	\

23
	: "=r" ((u32)(w1)), "=r" ((u32)(w0))	\

24
	:  "r" ((u32)(u)),   "r" ((u32)(v))	\

25
	: "macl", "mach")

26


27
#define __ll_B ((UWtype) 1 << (W_TYPE_SIZE / 2))

28
#define __ll_lowpart(t) ((UWtype) (t) & (__ll_B - 1))

29
#define __ll_highpart(t) ((UWtype) (t) >> (W_TYPE_SIZE / 2))

30


31
#define udiv_qrnnd(q, r, n1, n0, d) \

32
  do {									\

33
    UWtype __d1, __d0, __q1, __q0;					\

34
    UWtype __r1, __r0, __m;						\

35
    __d1 = __ll_highpart (d);						\

36
    __d0 = __ll_lowpart (d);						\

37
									\

38
    __r1 = (n1) % __d1;							\

39
    __q1 = (n1) / __d1;							\

40
    __m = (UWtype) __q1 * __d0;						\

41
    __r1 = __r1 * __ll_B | __ll_highpart (n0);				\

42
    if (__r1 < __m)							\

43
      {									\

44
	__q1--, __r1 += (d);						\

45
	if (__r1 >= (d)) /* i.e. we didn't get carry when adding to __r1 */\

46
	  if (__r1 < __m)						\

47
	    __q1--, __r1 += (d);					\

48
      }									\

49
    __r1 -= __m;							\

50
									\

51
    __r0 = __r1 % __d1;							\

52
    __q0 = __r1 / __d1;							\

53
    __m = (UWtype) __q0 * __d0;						\

54
    __r0 = __r0 * __ll_B | __ll_lowpart (n0);				\

55
    if (__r0 < __m)							\

56
      {									\

57
	__q0--, __r0 += (d);						\

58
	if (__r0 >= (d))						\

59
	  if (__r0 < __m)						\

60
	    __q0--, __r0 += (d);					\

61
      }									\

62
    __r0 -= __m;							\

63
									\

64
    (q) = (UWtype) __q1 * __ll_B | __q0;				\

65
    (r) = __r0;								\

66
  } while (0)

67


68
#define abort()	return 0

69


70
#define __BYTE_ORDER __LITTLE_ENDIAN

71


72


73


74