/* 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(_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_norm(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_info()->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_info()->xfsr[0] >> 23) & _fex)
|
|
#define FP_TRAPPING_EXCEPTIONS ((current_thread_info()->xfsr[0] >> 23) & 0x1f)
|
|
#endif
|
