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Diffstat (limited to 'include/asm-sparc64/sfp-machine.h')
-rw-r--r-- | include/asm-sparc64/sfp-machine.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/include/asm-sparc64/sfp-machine.h b/include/asm-sparc64/sfp-machine.h new file mode 100644 index 000000000000..5015bb8d6c32 --- /dev/null +++ b/include/asm-sparc64/sfp-machine.h | |||
@@ -0,0 +1,91 @@ | |||
1 | /* Machine-dependent software floating-point definitions. | ||
2 | Sparc64 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) and | ||
7 | David S. Miller (davem@redhat.com). | ||
8 | |||
9 | The GNU C Library is free software; you can redistribute it and/or | ||
10 | modify it under the terms of the GNU Library General Public License as | ||
11 | published by the Free Software Foundation; either version 2 of the | ||
12 | License, or (at your option) any later version. | ||
13 | |||
14 | The GNU C Library is distributed in the hope that it will be useful, | ||
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
17 | Library General Public License for more details. | ||
18 | |||
19 | You should have received a copy of the GNU Library General Public | ||
20 | License along with the GNU C Library; see the file COPYING.LIB. If | ||
21 | not, write to the Free Software Foundation, Inc., | ||
22 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | ||
23 | |||
24 | #ifndef _SFP_MACHINE_H | ||
25 | #define _SFP_MACHINE_H | ||
26 | |||
27 | #define _FP_W_TYPE_SIZE 64 | ||
28 | #define _FP_W_TYPE unsigned long | ||
29 | #define _FP_WS_TYPE signed long | ||
30 | #define _FP_I_TYPE long | ||
31 | |||
32 | #define _FP_MUL_MEAT_S(R,X,Y) \ | ||
33 | _FP_MUL_MEAT_1_imm(_FP_WFRACBITS_S,R,X,Y) | ||
34 | #define _FP_MUL_MEAT_D(R,X,Y) \ | ||
35 | _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm) | ||
36 | #define _FP_MUL_MEAT_Q(R,X,Y) \ | ||
37 | _FP_MUL_MEAT_2_wide_3mul(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm) | ||
38 | |||
39 | #define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_imm(S,R,X,Y,_FP_DIV_HELP_imm) | ||
40 | #define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_1_udiv_norm(D,R,X,Y) | ||
41 | #define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_2_udiv(Q,R,X,Y) | ||
42 | |||
43 | #define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1) | ||
44 | #define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1) | ||
45 | #define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1 | ||
46 | #define _FP_NANSIGN_S 0 | ||
47 | #define _FP_NANSIGN_D 0 | ||
48 | #define _FP_NANSIGN_Q 0 | ||
49 | |||
50 | #define _FP_KEEPNANFRACP 1 | ||
51 | |||
52 | /* If one NaN is signaling and the other is not, | ||
53 | * we choose that one, otherwise we choose X. | ||
54 | */ | ||
55 | /* For _Qp_* and _Q_*, this should prefer X, for | ||
56 | * CPU instruction emulation this should prefer Y. | ||
57 | * (see SPAMv9 B.2.2 section). | ||
58 | */ | ||
59 | #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \ | ||
60 | do { \ | ||
61 | if ((_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs) \ | ||
62 | && !(_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs)) \ | ||
63 | { \ | ||
64 | R##_s = X##_s; \ | ||
65 | _FP_FRAC_COPY_##wc(R,X); \ | ||
66 | } \ | ||
67 | else \ | ||
68 | { \ | ||
69 | R##_s = Y##_s; \ | ||
70 | _FP_FRAC_COPY_##wc(R,Y); \ | ||
71 | } \ | ||
72 | R##_c = FP_CLS_NAN; \ | ||
73 | } while (0) | ||
74 | |||
75 | /* Obtain the current rounding mode. */ | ||
76 | #ifndef FP_ROUNDMODE | ||
77 | #define FP_ROUNDMODE ((current_thread_info()->xfsr[0] >> 30) & 0x3) | ||
78 | #endif | ||
79 | |||
80 | /* Exception flags. */ | ||
81 | #define FP_EX_INVALID (1 << 4) | ||
82 | #define FP_EX_OVERFLOW (1 << 3) | ||
83 | #define FP_EX_UNDERFLOW (1 << 2) | ||
84 | #define FP_EX_DIVZERO (1 << 1) | ||
85 | #define FP_EX_INEXACT (1 << 0) | ||
86 | |||
87 | #define FP_HANDLE_EXCEPTIONS return _fex | ||
88 | |||
89 | #define FP_INHIBIT_RESULTS ((current_thread_info()->xfsr[0] >> 23) & _fex) | ||
90 | |||
91 | #endif | ||