Annotation of gforth/arch/generic/machine.h, revision 1.3

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.
                      4: 
                      5:   Copyright (C) 1995 Free Software Foundation, Inc.
                      6: 
                      7:   This file is part of Gforth.
                      8: 
                      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.
                     13: 
                     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.
                     18: 
                     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: */
                     23: 
1.2       pazsan     24: /* define SYSCALL */
                     25: 
                     26: #ifndef SYSCALL
                     27: #define SYSCALL
                     28: #endif
                     29: 
1.1       jwilke     30: #ifndef USE_FTOS
                     31: #ifndef USE_NO_FTOS
                     32: /* keep top of FP stack in register. Since most processors have FP
                     33:    registers and they are hardly used in gforth, this is usually a
                     34:    good idea.  The 88100 has no separate FP regs, but many general
                     35:    purpose regs, so it should be ok */
                     36: #define USE_FTOS
                     37: #endif
                     38: #endif
                     39: /* I don't do the same for the data stack (i.e. USE_TOS), since this
                     40:    loses on processors with few registers. USE_TOS might be defined in
                     41:    the processor-specific files */
                     42: 
                     43: #ifdef DIRECT_THREADED
                     44: /* If you want direct threading, write a .h file for your processor! */
                     45: /* We could put some stuff here that causes a compile error, but then
                     46:    we could not use this file in the other machine.h files */
                     47: #endif
1.3     ! pazsan     48: 
        !            49: /* Types: these types are used as Forth's internal types */
        !            50: 
        !            51: /* define this if IEEE singles and doubles are available as C data types */
        !            52: #define IEEE_FP
        !            53: 
        !            54: /* the IEEE types are used only for loading and storing */
        !            55: /* the IEEE double precision type */
        !            56: typedef double DFloat;
        !            57: /* the IEEE single precision type */
        !            58: typedef float SFloat;
        !            59: 
        !            60: typedef CELL_TYPE Cell;
        !            61: typedef unsigned CELL_TYPE UCell;
        !            62: typedef Cell Bool;
        !            63: typedef unsigned char Char;
        !            64: typedef double Float;
        !            65: typedef Char *Address;
        !            66: 
        !            67: #if defined(DOUBLY_INDIRECT)
        !            68: typedef void **Label;
        !            69: #else /* !defined(DOUBLY_INDIRECT) */
        !            70: typedef void *Label;
        !            71: #endif /* !defined(DOUBLY_INDIRECT) */
1.1       jwilke     72: 

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