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gforth /
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m68k.h
Revision
1.3:
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Sat Oct 7 17:38:17 1995 UTC (28 years, 5 months ago) by
anton
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added code.fs (code, ;code, end-code, assembler)
renamed dostruc to dofield
made index and doc-entries nicer
Only words containing 'e' or 'E' are converted to FP numbers.
added many wordset comments
added flush-icache primitive and FLUSH_ICACHE macro
added +DO, U+DO, -DO, U-DO and -LOOP
added code address labels (`docol:' etc.)
fixed sparc cache_flush
/*
$Id: m68k.h,v 1.3 1995/10/07 17:38:17 anton Exp $
Copyright 1992 by the ANSI figForth Development Group
This is the machine-specific part for the 68000 and family
*/
#include "32bit.h"
#define FLUSH_ICACHE(addr,size) cache_$clear()
/* Clearing the whole cache is a bit drastic, but this is the only
cache control available on the apollo.
*/
#ifdef DIRECT_THREADED
/* PFA gives the parameter field address corresponding to a cfa */
#define PFA(cfa) (((Cell *)cfa)+2)
/* PFA1 is a special version for use just after a NEXT1 */
#define PFA1(cfa) PFA(cfa)
/* CODE_ADDRESS is the address of the code jumped to through the code field */
#define CODE_ADDRESS(cfa) (*(Label *)(((char *)(cfa))+2))
/* MAKE_CF creates an appropriate code field at the cfa;
ca is the code address */
#define MAKE_CF(cfa,ca) ({short * _cfa = (short *)cfa; \
_cfa[0] = 0x4ef9; /* jmp.l */ \
*(long *)(_cfa+1) = (long)(ca);})
/* this is the point where the does code starts if label points to the
* jump dodoes */
#define DOES_CODE(label) ((Xt *)(((char *)CODE_ADDRESS(label))+DOES_HANDLER_SIZE))
/* this is a special version of DOES_CODE for use in dodoes */
#define DOES_CODE1(label) DOES_CODE(label)
/* this stores a call dodoes at addr */
#define MAKE_DOES_HANDLER(addr) MAKE_CF(addr,symbols[DODOES])
#define DOES_HANDLER_SIZE 8
#define MAKE_DOES_CF(addr,doesp) MAKE_CF(addr,((int)(doesp)-8))
#endif
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