Annotation of gforth/arch/generic/machine.h, revision 1.1
1.1 ! jwilke 1: /*
! 2: This is a generic file for 32-bit machines with IEEE FP arithmetic (no VMS).
! 3: It only supports indirect threading.
! 5: Copyright (C) 1995 Free Software Foundation, Inc.
! 7: This file is part of Gforth.
! 9: Gforth is free software; you can redistribute it and/or
! 10: modify it under the terms of the GNU General Public License
! 11: as published by the Free Software Foundation; either version 2
! 12: of the License, or (at your option) any later version.
! 14: This program is distributed in the hope that it will be useful,
! 15: but WITHOUT ANY WARRANTY; without even the implied warranty of
! 16: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
! 17: GNU General Public License for more details.
! 19: You should have received a copy of the GNU General Public License
! 20: along with this program; if not, write to the Free Software
! 21: Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
! 22: */
! 24: /* define this if IEEE singles and doubles are available as C data types */
! 25: #define IEEE_FP
! 27: /* the IEEE types are used only for loading and storing */
! 28: /* the IEEE double precision type */
! 29: typedef double DFloat;
! 30: /* the IEEE single precision type */
! 31: typedef float SFloat;
! 33: #ifndef USE_FTOS
! 34: #ifndef USE_NO_FTOS
! 35: /* keep top of FP stack in register. Since most processors have FP
! 36: registers and they are hardly used in gforth, this is usually a
! 37: good idea. The 88100 has no separate FP regs, but many general
! 38: purpose regs, so it should be ok */
! 39: #define USE_FTOS
! 40: #endif
! 41: #endif
! 42: /* I don't do the same for the data stack (i.e. USE_TOS), since this
! 43: loses on processors with few registers. USE_TOS might be defined in
! 44: the processor-specific files */
! 46: #ifdef DIRECT_THREADED
! 47: /* If you want direct threading, write a .h file for your processor! */
! 48: /* We could put some stuff here that causes a compile error, but then
! 49: we could not use this file in the other machine.h files */
! 50: #endif