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/* Machine-dependent software floating-point definitions. Sparc64 kernel version. Copyright (C) 1997,1998,1999 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Richard Henderson (rth@cygnus.com), Jakub Jelinek (jj@ultra.linux.cz) and David S. Miller (davem@redhat.com). The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifndef _SFP_MACHINE_H #define _SFP_MACHINE_H #define _FP_W_TYPE_SIZE 64 #define _FP_W_TYPE unsigned long #define _FP_WS_TYPE signed long #define _FP_I_TYPE long #define _FP_MUL_MEAT_S(R,X,Y) \ _FP_MUL_MEAT_1_imm(_FP_WFRACBITS_S,R,X,Y) #define _FP_MUL_MEAT_D(R,X,Y) \ _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm) #define _FP_MUL_MEAT_Q(R,X,Y) \ _FP_MUL_MEAT_2_wide_3mul(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm) #define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_imm(S,R,X,Y,_FP_DIV_HELP_imm) #define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_1_udiv(D,R,X,Y) #define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_2_udiv(Q,R,X,Y) #define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1) #define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1) #define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1 #define _FP_NANSIGN_S 0 #define _FP_NANSIGN_D 0 #define _FP_NANSIGN_Q 0 #define _FP_KEEPNANFRACP 1 /* If one NaN is signaling and the other is not, * we choose that one, otherwise we choose X. */ /* For _Qp_* and _Q_*, this should prefer X, for * CPU instruction emulation this should prefer Y. * (see SPAMv9 B.2.2 section). */ #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \ do { \ if ((_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs) \ && !(_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs)) \ { \ R##_s = X##_s; \ _FP_FRAC_COPY_##wc(R,X); \ } \ else \ { \ R##_s = Y##_s; \ _FP_FRAC_COPY_##wc(R,Y); \ } \ R##_c = FP_CLS_NAN; \ } while (0) /* Obtain the current rounding mode. */ #ifndef FP_ROUNDMODE #define FP_ROUNDMODE ((current->thread.xfsr[0] >> 30) & 0x3) #endif /* Exception flags. */ #define FP_EX_INVALID (1 << 4) #define FP_EX_OVERFLOW (1 << 3) #define FP_EX_UNDERFLOW (1 << 2) #define FP_EX_DIVZERO (1 << 1) #define FP_EX_INEXACT (1 << 0) #define FP_HANDLE_EXCEPTIONS return _fex #define FP_INHIBIT_RESULTS ((current->thread.xfsr[0] >> 23) & _fex) #endif |