Linux Kernel  3.7.1
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sfp-util_64.h
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1 /*
2  * arch/sparc64/math-emu/sfp-util.h
3  *
4  * Copyright (C) 1999 Jakub Jelinek ([email protected])
5  * Copyright (C) 1999 David S. Miller ([email protected])
6  *
7  */
8 
9 #include <linux/kernel.h>
10 #include <linux/sched.h>
11 #include <linux/types.h>
12 #include <asm/byteorder.h>
13 
14 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
15  __asm__ ("addcc %4,%5,%1\n\t" \
16  "add %2,%3,%0\n\t" \
17  "bcs,a,pn %%xcc, 1f\n\t" \
18  "add %0, 1, %0\n" \
19  "1:" \
20  : "=r" ((UDItype)(sh)), \
21  "=&r" ((UDItype)(sl)) \
22  : "r" ((UDItype)(ah)), \
23  "r" ((UDItype)(bh)), \
24  "r" ((UDItype)(al)), \
25  "r" ((UDItype)(bl)) \
26  : "cc")
27 
28 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
29  __asm__ ("subcc %4,%5,%1\n\t" \
30  "sub %2,%3,%0\n\t" \
31  "bcs,a,pn %%xcc, 1f\n\t" \
32  "sub %0, 1, %0\n" \
33  "1:" \
34  : "=r" ((UDItype)(sh)), \
35  "=&r" ((UDItype)(sl)) \
36  : "r" ((UDItype)(ah)), \
37  "r" ((UDItype)(bh)), \
38  "r" ((UDItype)(al)), \
39  "r" ((UDItype)(bl)) \
40  : "cc")
41 
42 #define umul_ppmm(wh, wl, u, v) \
43  do { \
44  UDItype tmp1, tmp2, tmp3, tmp4; \
45  __asm__ __volatile__ ( \
46  "srl %7,0,%3\n\t" \
47  "mulx %3,%6,%1\n\t" \
48  "srlx %6,32,%2\n\t" \
49  "mulx %2,%3,%4\n\t" \
50  "sllx %4,32,%5\n\t" \
51  "srl %6,0,%3\n\t" \
52  "sub %1,%5,%5\n\t" \
53  "srlx %5,32,%5\n\t" \
54  "addcc %4,%5,%4\n\t" \
55  "srlx %7,32,%5\n\t" \
56  "mulx %3,%5,%3\n\t" \
57  "mulx %2,%5,%5\n\t" \
58  "sethi %%hi(0x80000000),%2\n\t" \
59  "addcc %4,%3,%4\n\t" \
60  "srlx %4,32,%4\n\t" \
61  "add %2,%2,%2\n\t" \
62  "movcc %%xcc,%%g0,%2\n\t" \
63  "addcc %5,%4,%5\n\t" \
64  "sllx %3,32,%3\n\t" \
65  "add %1,%3,%1\n\t" \
66  "add %5,%2,%0" \
67  : "=r" ((UDItype)(wh)), \
68  "=&r" ((UDItype)(wl)), \
69  "=&r" (tmp1), "=&r" (tmp2), "=&r" (tmp3), "=&r" (tmp4) \
70  : "r" ((UDItype)(u)), \
71  "r" ((UDItype)(v)) \
72  : "cc"); \
73  } while (0)
74 
75 #define udiv_qrnnd(q, r, n1, n0, d) \
76  do { \
77  UWtype __d1, __d0, __q1, __q0, __r1, __r0, __m; \
78  __d1 = (d >> 32); \
79  __d0 = (USItype)d; \
80  \
81  __r1 = (n1) % __d1; \
82  __q1 = (n1) / __d1; \
83  __m = (UWtype) __q1 * __d0; \
84  __r1 = (__r1 << 32) | (n0 >> 32); \
85  if (__r1 < __m) \
86  { \
87  __q1--, __r1 += (d); \
88  if (__r1 >= (d)) /* i.e. we didn't get carry when adding to __r1 */ \
89  if (__r1 < __m) \
90  __q1--, __r1 += (d); \
91  } \
92  __r1 -= __m; \
93  \
94  __r0 = __r1 % __d1; \
95  __q0 = __r1 / __d1; \
96  __m = (UWtype) __q0 * __d0; \
97  __r0 = (__r0 << 32) | ((USItype)n0); \
98  if (__r0 < __m) \
99  { \
100  __q0--, __r0 += (d); \
101  if (__r0 >= (d)) \
102  if (__r0 < __m) \
103  __q0--, __r0 += (d); \
104  } \
105  __r0 -= __m; \
106  \
107  (q) = (UWtype) (__q1 << 32) | __q0; \
108  (r) = __r0; \
109  } while (0)
110 
111 #define UDIV_NEEDS_NORMALIZATION 1
112 
113 #define abort() \
114  return 0
115 
116 #ifdef __BIG_ENDIAN
117 #define __BYTE_ORDER __BIG_ENDIAN
118 #else
119 #define __BYTE_ORDER __LITTLE_ENDIAN
120 #endif