1: /*
2: $Id: apollo68k.h,v 1.2 1994/05/31 07:08:10 benschop Exp $
3: Copyright 1992 by the ANSI figForth Development Group
4:
5: This is the machine-specific part for a HP/Apollo with a 680x0
6: processor running Domain/OS
7: */
8:
9:
10: /* Cell and UCell must be the same size as a pointer */
11: typedef long Cell;
12: typedef unsigned long UCell;
13:
14: /* DCell and UDCell must be twice as large as Cell */
15: typedef long long DCell;
16: typedef unsigned long long UDCell;
17:
18: /* define this if IEEE singles and doubles are available as C data types */
19: #define IEEE_FP
20:
21: /* the IEEE types are used only for loading and storing */
22: /* the IEEE double precision type */
23: typedef double DFloat;
24: /* the IEEE single precision type */
25: typedef float SFloat;
26:
27: /* define this if the least-significant byte is at the largets address */
28: #define BIG_ENDIAN
29:
30: #ifdef DIRECT_THREADED
31: /* PFA gives the parameter field address corresponding to a cfa */
32: #define PFA(cfa) (((Cell *)cfa)+2)
33: /* PFA1 is a special version for use just after a NEXT1 */
34: #define PFA1(cfa) PFA(cfa)
35: /* CODE_ADDRESS is the address of the code jumped to through the code field */
36: #define CODE_ADDRESS(cfa) (*(Label *)(((char *)(cfa))+2))
37: /* MAKE_CF creates an appropriate code field at the cfa;
38: ca is the code address */
39: #define MAKE_CF(cfa,ca) ({short * _cfa = (short *)cfa; \
40: _cfa[0] = 0x4ef9; /* jmp.l */ \
41: *(long *)(_cfa+1) = (long)(ca);})
42:
43: /* this is the point where the does code starts if label points to the
44: * jump dodoes */
45: #define DOES_CODE(label) ((Xt *)(((char *)label)+8))
46:
47: /* this is a special version of DOES_CODE for use in dodoes */
48: #define DOES_CODE1(label) DOES_CODE(label)
49:
50: /* this stores a jump dodoes at ca */
51: #define MAKE_DOESJUMP(ca) ({short * _ca = (short *)ca; \
52: _ca[0] = 0x4ef9; /* jmp.l */ \
53: *(long *)(_ca+1) = (long)&&dodoes;})
54: #endif
55:
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