cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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sfp-machine.h (2767B)

      1/* SPDX-License-Identifier: GPL-2.0+
      2 *
      3 * Machine-dependent software floating-point definitions.
      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).
     11*/
     12
     13#ifndef _SFP_MACHINE_H
     14#define _SFP_MACHINE_H
     15
     16#ifdef __BIG_ENDIAN__
     17#define __BYTE_ORDER __BIG_ENDIAN
     18#define __LITTLE_ENDIAN 0
     19#else
     20#define __BYTE_ORDER __LITTLE_ENDIAN
     21#define __BIG_ENDIAN 0
     22#endif
     23
     24#define _FP_W_TYPE_SIZE		32
     25#define _FP_W_TYPE		unsigned long
     26#define _FP_WS_TYPE		signed long
     27#define _FP_I_TYPE		long
     28
     29#define _FP_MUL_MEAT_S(R,X,Y)					\
     30  _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm)
     31#define _FP_MUL_MEAT_D(R,X,Y)					\
     32  _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm)
     33#define _FP_MUL_MEAT_Q(R,X,Y)					\
     34  _FP_MUL_MEAT_4_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)
     35
     36#define _FP_DIV_MEAT_S(R,X,Y)	_FP_DIV_MEAT_1_udiv(S,R,X,Y)
     37#define _FP_DIV_MEAT_D(R,X,Y)	_FP_DIV_MEAT_2_udiv(D,R,X,Y)
     38#define _FP_DIV_MEAT_Q(R,X,Y)	_FP_DIV_MEAT_4_udiv(Q,R,X,Y)
     39
     40#define _FP_NANFRAC_S		((_FP_QNANBIT_S << 1) - 1)
     41#define _FP_NANFRAC_D		((_FP_QNANBIT_D << 1) - 1), -1
     42#define _FP_NANFRAC_Q		((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1
     43#define _FP_NANSIGN_S		0
     44#define _FP_NANSIGN_D		0
     45#define _FP_NANSIGN_Q		0
     46
     47#define _FP_KEEPNANFRACP 1
     48
     49/*
     50 * If one NaN is signaling and the other is not,
     51 * we choose that one, otherwise we choose X.
     52 */
     53#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP)                      \
     54  do {                                                          \
     55    if ((_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs)          \
     56        && !(_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs))     \
     57      {                                                         \
     58        R##_s = Y##_s;                                          \
     59        _FP_FRAC_COPY_##wc(R,Y);                                \
     60      }                                                         \
     61    else                                                        \
     62      {                                                         \
     63        R##_s = X##_s;                                          \
     64        _FP_FRAC_COPY_##wc(R,X);                                \
     65      }                                                         \
     66    R##_c = FP_CLS_NAN;                                         \
     67  } while (0)
     68
     69//#define FP_ROUNDMODE		FPSCR_RM
     70#define FP_DENORM_ZERO		1/*FPSCR_DN*/
     71
     72/* Exception flags. */
     73#define FP_EX_INVALID		(1<<4)
     74#define FP_EX_DIVZERO		(1<<3)
     75#define FP_EX_OVERFLOW		(1<<2)
     76#define FP_EX_UNDERFLOW		(1<<1)
     77#define FP_EX_INEXACT		(1<<0)
     78
     79#endif
     80