1: /* This is the machine-specific part for the 68000 and family
2:
3: Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc.
4:
5: This file is part of Gforth.
6:
7: Gforth is free software; you can redistribute it and/or
8: modify it under the terms of the GNU General Public License
9: as published by the Free Software Foundation; either version 2
10: of the License, or (at your option) any later version.
11:
12: This program is distributed in the hope that it will be useful,
13: but WITHOUT ANY WARRANTY; without even the implied warranty of
14: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: GNU General Public License for more details.
16:
17: You should have received a copy of the GNU General Public License
18: along with this program; if not, write to the Free Software
19: Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
20: */
21:
22: #ifndef THREADING_SCHEME
23: #define THREADING_SCHEME 3
24: #endif
25:
26: /* define this if the processor cannot exploit instruction-level
27: parallelism (no pipelining or too few registers) */
28: #define CISC_NEXT
29:
30: #if !defined USE_NO_TOS && !defined USE_TOS
31: #define USE_TOS
32: #endif
33:
34: #include "../generic/machine.h"
35: #include <sys/types.h>
36:
37: /* Clearing the whole cache is a bit drastic, but this is the only
38: * cache control available on the apollo and NeXT
39: */
40: #if defined(apollo)
41: # define FLUSH_ICACHE(addr,size) cache_$clear()
42: #elif defined(NeXT)
43: # define FLUSH_ICACHE(addr,size) asm("trap #2");
44: #elif defined(hpux)
45: # include <sys/cache.h>
46: # define FLUSH_ICACHE(addr,size) cachectl(CC_IPURGE,(addr),(size))
47: #elif defined(linux)
48: #include <asm/cachectl.h>
49: extern int cacheflush(void *, int, int, size_t);
50: #define FLUSH_ICACHE(addr,size) \
51: cacheflush(addr, FLUSH_SCOPE_LINE, FLUSH_CACHE_INSN, (size_t)(size) + 15)
52: #elif defined(amigaos)
53: # define FLUSH_ICACHE(addr,size) \
54: asm(" move.l a6,-(sp); \
55: move.l _SysBase,a6; \
56: jsr -636(a6); \
57: move.l (sp)+,a6; \
58: ")
59: #else
60: # warning no FLUSH_ICACHE defined. Dynamic native code generation disabled.
61: # warning CODE words will not work.
62: #endif
63:
64: #ifdef FORCE_REG /* highly recommended */
65: #if defined(amigaos)
66: # define IPREG asm("%a6")
67: #else
68: # define IPREG asm("%a5")
69: #endif
70: #define SPREG asm("%a4")
71: #define RPREG asm("%a3")
72: #define CFAREG asm("%a2")
73: #define TOSREG asm("%d3")
74: #define LPREG asm("%d2")
75: #endif
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