[S390] qeth: avoid use of include/asm-s390
[linux-2.6.git] / include / asm-s390 / sfp-machine.h
1 /* Machine-dependent software floating-point definitions.
2    S/390 kernel version.
3    Copyright (C) 1997,1998,1999 Free Software Foundation, Inc.
4    This file is part of the GNU C Library.
5    Contributed by Richard Henderson (rth@cygnus.com),
6                   Jakub Jelinek (jj@ultra.linux.cz),
7                   David S. Miller (davem@redhat.com) and
8                   Peter Maydell (pmaydell@chiark.greenend.org.uk).
9
10    The GNU C Library is free software; you can redistribute it and/or
11    modify it under the terms of the GNU Library General Public License as
12    published by the Free Software Foundation; either version 2 of the
13    License, or (at your option) any later version.
14
15    The GNU C Library is distributed in the hope that it will be useful,
16    but WITHOUT ANY WARRANTY; without even the implied warranty of
17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
18    Library General Public License for more details.
19
20    You should have received a copy of the GNU Library General Public
21    License along with the GNU C Library; see the file COPYING.LIB.  If
22    not, write to the Free Software Foundation, Inc.,
23    59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
24
25 #ifndef _SFP_MACHINE_H
26 #define _SFP_MACHINE_H
27    
28
29 #define _FP_W_TYPE_SIZE         32
30 #define _FP_W_TYPE              unsigned int
31 #define _FP_WS_TYPE             signed int
32 #define _FP_I_TYPE              int
33
34 #define _FP_MUL_MEAT_S(R,X,Y)                                   \
35   _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm)
36 #define _FP_MUL_MEAT_D(R,X,Y)                                   \
37   _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm)
38 #define _FP_MUL_MEAT_Q(R,X,Y)                                   \
39   _FP_MUL_MEAT_4_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)
40
41 #define _FP_DIV_MEAT_S(R,X,Y)   _FP_DIV_MEAT_1_udiv(S,R,X,Y)
42 #define _FP_DIV_MEAT_D(R,X,Y)   _FP_DIV_MEAT_2_udiv(D,R,X,Y)
43 #define _FP_DIV_MEAT_Q(R,X,Y)   _FP_DIV_MEAT_4_udiv(Q,R,X,Y)
44
45 #define _FP_NANFRAC_S           ((_FP_QNANBIT_S << 1) - 1)
46 #define _FP_NANFRAC_D           ((_FP_QNANBIT_D << 1) - 1), -1
47 #define _FP_NANFRAC_Q           ((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1
48 #define _FP_NANSIGN_S           0
49 #define _FP_NANSIGN_D           0
50 #define _FP_NANSIGN_Q           0
51
52 #define _FP_KEEPNANFRACP 1
53
54 /*
55  * If one NaN is signaling and the other is not,
56  * we choose that one, otherwise we choose X.
57  */
58 #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP)                      \
59   do {                                                          \
60     if ((_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs)          \
61         && !(_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs))     \
62       {                                                         \
63         R##_s = Y##_s;                                          \
64         _FP_FRAC_COPY_##wc(R,Y);                                \
65       }                                                         \
66     else                                                        \
67       {                                                         \
68         R##_s = X##_s;                                          \
69         _FP_FRAC_COPY_##wc(R,X);                                \
70       }                                                         \
71     R##_c = FP_CLS_NAN;                                         \
72   } while (0)
73
74 /* Some assembly to speed things up. */
75 #define __FP_FRAC_ADD_3(r2,r1,r0,x2,x1,x0,y2,y1,y0) ({          \
76         unsigned int __r2 = (x2) + (y2);                        \
77         unsigned int __r1 = (x1);                               \
78         unsigned int __r0 = (x0);                               \
79         asm volatile(                                           \
80                 "       alr     %2,%3\n"                        \
81                 "       brc     12,0f\n"                        \
82                 "       lhi     0,1\n"                          \
83                 "       alr     %1,0\n"                         \
84                 "       brc     12,0f\n"                        \
85                 "       alr     %0,0\n"                         \
86                 "0:"                                            \
87                 : "+&d" (__r2), "+&d" (__r1), "+&d" (__r0)      \
88                 : "d" (y0), "i" (1) : "cc", "0" );              \
89         asm volatile(                                           \
90                 "       alr     %1,%2\n"                        \
91                 "       brc     12,0f\n"                        \
92                 "       ahi     %0,1\n"                         \
93                 "0:"                                            \
94                 : "+&d" (__r2), "+&d" (__r1)                    \
95                 : "d" (y1) : "cc");                             \
96         (r2) = __r2;                                            \
97         (r1) = __r1;                                            \
98         (r0) = __r0;                                            \
99 })
100
101 #define __FP_FRAC_SUB_3(r2,r1,r0,x2,x1,x0,y2,y1,y0) ({          \
102         unsigned int __r2 = (x2) - (y2);                        \
103         unsigned int __r1 = (x1);                               \
104         unsigned int __r0 = (x0);                               \
105         asm volatile(                                           \
106                 "       slr   %2,%3\n"                          \
107                 "       brc     3,0f\n"                         \
108                 "       lhi     0,1\n"                          \
109                 "       slr     %1,0\n"                         \
110                 "       brc     3,0f\n"                         \
111                 "       slr     %0,0\n"                         \
112                 "0:"                                            \
113                 : "+&d" (__r2), "+&d" (__r1), "+&d" (__r0)      \
114                 : "d" (y0) : "cc", "0");                        \
115         asm volatile(                                           \
116                 "       slr     %1,%2\n"                        \
117                 "       brc     3,0f\n"                         \
118                 "       ahi     %0,-1\n"                        \
119                 "0:"                                            \
120                 : "+&d" (__r2), "+&d" (__r1)                    \
121                 : "d" (y1) : "cc");                             \
122         (r2) = __r2;                                            \
123         (r1) = __r1;                                            \
124         (r0) = __r0;                                            \
125 })
126
127 #define __FP_FRAC_DEC_3(x2,x1,x0,y2,y1,y0) __FP_FRAC_SUB_3(x2,x1,x0,x2,x1,x0,y2,y1,y0)
128
129 /* Obtain the current rounding mode. */
130 #define FP_ROUNDMODE    mode
131
132 /* Exception flags. */
133 #define FP_EX_INVALID           0x800000
134 #define FP_EX_DIVZERO           0x400000
135 #define FP_EX_OVERFLOW          0x200000
136 #define FP_EX_UNDERFLOW         0x100000
137 #define FP_EX_INEXACT           0x080000
138
139 /* We write the results always */
140 #define FP_INHIBIT_RESULTS 0
141
142 #endif