| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0+ |
| 2 | * |
| 3 | * Machine-dependent software floating-point definitions. |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 4 | SuperH kernel version. |
| 5 | Copyright (C) 1997,1998,1999 Free Software Foundation, Inc. |
| 6 | This file is part of the GNU C Library. |
| 7 | Contributed by Richard Henderson (rth@cygnus.com), |
| 8 | Jakub Jelinek (jj@ultra.linux.cz), |
| 9 | David S. Miller (davem@redhat.com) and |
| 10 | Peter Maydell (pmaydell@chiark.greenend.org.uk). |
| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 11 | */ |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 12 | |
| 13 | #ifndef _SFP_MACHINE_H |
| 14 | #define _SFP_MACHINE_H |
| 15 | |
| 16 | #define _FP_W_TYPE_SIZE 32 |
| 17 | #define _FP_W_TYPE unsigned long |
| 18 | #define _FP_WS_TYPE signed long |
| 19 | #define _FP_I_TYPE long |
| 20 | |
| 21 | #define _FP_MUL_MEAT_S(R,X,Y) \ |
| 22 | _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm) |
| 23 | #define _FP_MUL_MEAT_D(R,X,Y) \ |
| 24 | _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm) |
| 25 | #define _FP_MUL_MEAT_Q(R,X,Y) \ |
| 26 | _FP_MUL_MEAT_4_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm) |
| 27 | |
| 28 | #define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_udiv(S,R,X,Y) |
| 29 | #define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_2_udiv(D,R,X,Y) |
| 30 | #define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_4_udiv(Q,R,X,Y) |
| 31 | |
| 32 | #define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1) |
| 33 | #define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1), -1 |
| 34 | #define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1 |
| 35 | #define _FP_NANSIGN_S 0 |
| 36 | #define _FP_NANSIGN_D 0 |
| 37 | #define _FP_NANSIGN_Q 0 |
| 38 | |
| 39 | #define _FP_KEEPNANFRACP 1 |
| 40 | |
| 41 | /* |
| 42 | * If one NaN is signaling and the other is not, |
| 43 | * we choose that one, otherwise we choose X. |
| 44 | */ |
| 45 | #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \ |
| 46 | do { \ |
| 47 | if ((_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs) \ |
| 48 | && !(_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs)) \ |
| 49 | { \ |
| 50 | R##_s = Y##_s; \ |
| 51 | _FP_FRAC_COPY_##wc(R,Y); \ |
| 52 | } \ |
| 53 | else \ |
| 54 | { \ |
| 55 | R##_s = X##_s; \ |
| 56 | _FP_FRAC_COPY_##wc(R,X); \ |
| 57 | } \ |
| 58 | R##_c = FP_CLS_NAN; \ |
| 59 | } while (0) |
| 60 | |
| 61 | //#define FP_ROUNDMODE FPSCR_RM |
| 62 | #define FP_DENORM_ZERO 1/*FPSCR_DN*/ |
| 63 | |
| 64 | /* Exception flags. */ |
| 65 | #define FP_EX_INVALID (1<<4) |
| 66 | #define FP_EX_DIVZERO (1<<3) |
| 67 | #define FP_EX_OVERFLOW (1<<2) |
| 68 | #define FP_EX_UNDERFLOW (1<<1) |
| 69 | #define FP_EX_INEXACT (1<<0) |
| 70 | |
| 71 | #endif |
| 72 | |