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.
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.
1.2 pazsan 24: /* define SYSCALL */
26: #ifndef SYSCALL
27: #define SYSCALL
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
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 */
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 */
1.3 ! pazsan 48:
! 49: /* Types: these types are used as Forth's internal types */
! 51: /* define this if IEEE singles and doubles are available as C data types */
! 52: #define IEEE_FP
! 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;
! 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;
! 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: