File:
[gforth] /
gforth /
arch /
generic /
machine.h
Revision
1.7:
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Sat Feb 6 22:28:22 1999 UTC (25 years, 2 months ago) by
anton
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cleaned up threading stuff:
now the schemes are selected with -DTHREADED_SCHEME=n
there is now a macro SET_IP for setting ip.
New threading schemes: for Power (20% speedup on 604e) and a plain scheme
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) 1995,1998 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:
24: #ifndef THREADING_SCHEME
25: #define THREADING_SCHEME 6
26: #endif
27:
28: /* define SYSCALL */
29:
30: #ifndef SYSCALL
31: #define SYSCALL
32: #endif
33:
34: #ifndef SYSSIGNALS
35: #define SYSSIGNALS
36: #endif
37:
38: #ifndef USE_FTOS
39: #ifndef USE_NO_FTOS
40: /* keep top of FP stack in register. Since most processors have FP
41: registers and they are hardly used in gforth, this is usually a
42: good idea. The 88100 has no separate FP regs, but many general
43: purpose regs, so it should be ok */
44: #define USE_FTOS
45: #endif
46: #endif
47: /* I don't do the same for the data stack (i.e. USE_TOS), since this
48: loses on processors with few registers. USE_TOS might be defined in
49: the processor-specific files */
50:
51: #ifdef DIRECT_THREADED
52: /* If you want direct threading, write a .h file for your processor! */
53: /* We could put some stuff here that causes a compile error, but then
54: we could not use this file in the other machine.h files */
55: #endif
56:
57: /* Types: these types are used as Forth's internal types */
58:
59: /* define this if IEEE singles and doubles are available as C data types */
60: #define IEEE_FP
61:
62: /* the IEEE types are used only for loading and storing */
63: /* the IEEE double precision type */
64: typedef double DFloat;
65: /* the IEEE single precision type */
66: typedef float SFloat;
67:
68: typedef CELL_TYPE Cell;
69: typedef unsigned CELL_TYPE UCell;
70: typedef Cell Bool;
71: typedef unsigned char Char;
72: typedef double Float;
73: typedef Char *Address;
74:
75: #if defined(DOUBLY_INDIRECT)
76: typedef void **Label;
77: #else /* !defined(DOUBLY_INDIRECT) */
78: typedef void *Label;
79: #endif /* !defined(DOUBLY_INDIRECT) */
80:
81: /* feature defines */
82:
83: #define HAS_DCOMPS
84: #define HAS_FILE
85: #define HAS_FLOATING
86: #define HAS_GLOCALS
87: #define HAS_HASH
88: #define HAS_OS
89: #define HAS_XCONDS
90:
91: #define RELINFOBITS 8
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