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b00dc837 | 1 | /* |
1da177e4 LT |
2 | * arch/sparc64/math-emu/sfp-util.h |
3 | * | |
4 | * Copyright (C) 1999 Jakub Jelinek (jj@ultra.linux.cz) | |
5 | * Copyright (C) 1999 David S. Miller (davem@redhat.com) | |
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 | |
13da9e20 LT |
115 | |
116 | #ifdef __BIG_ENDIAN | |
117 | #define __BYTE_ORDER __BIG_ENDIAN | |
118 | #else | |
119 | #define __BYTE_ORDER __LITTLE_ENDIAN | |
120 | #endif |