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Sun Oct 25 23:15:47 1998 UTC
(23 years, 6 months ago) by pazsan
CVS tags: HEAD
SHARC-porting aids that benefit generally:
Cross: Added non-byte-addressed architectures as possible target (not hosts
Rest: all types are now Gforth-private types (so you could define as Char
whatever you where like). Some messing around with inabilities of Analog
Devices port of GCC.
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.
24: /* define SYSCALL */
26: #ifndef SYSCALL
27: #define SYSCALL
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 */
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) */