gnu/dist/gdb6/sim/ppc/altivec_expression.h

   1 /* Altivec expression macros, for PSIM, the PowerPC simulator.
   2
   3    Copyright 2003 Free Software Foundation, Inc.
   4
   5    Contributed by Red Hat Inc; developed under contract from Motorola.
   6    Written by matthew green <mrg@redhat.com>.
   7
   8    This file is part of GDB.
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 2 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 59 Temple Place - Suite 330,
  23    Boston, MA 02111-1307, USA.  */
  24
  25 /* AltiVec macro helpers.  */
  26
  27 #define ALTIVEC_SET_CR6(vS, checkone) \
  28 do { \
  29   if (checkone && ((*vS).w[0] == 0xffffffff && \
  30                    (*vS).w[1] == 0xffffffff && \
  31                    (*vS).w[2] == 0xffffffff && \
  32                    (*vS).w[3] == 0xffffffff)) \
  33     CR_SET(6, 1 << 3); \
  34   else if ((*vS).w[0] == 0 && \
  35            (*vS).w[1] == 0 && \
  36            (*vS).w[2] == 0 && \
  37            (*vS).w[3] == 0) \
  38     CR_SET(6, 1 << 1); \
  39   else \
  40     CR_SET(6, 0); \
  41 } while (0)
  42
  43 #define VSCR_SAT        0x00000001
  44 #define VSCR_NJ         0x00010000
  45
  46 #define ALTIVEC_SET_SAT(sat) \
  47 do { \
  48   if (sat) \
  49     VSCR |= VSCR_SAT; \
  50 } while (0)