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Annotation of gforth/m68k.h, revision 1.4

1.4     ! anton       1: /* This is the machine-specific part for the 68000 and family
1.1       anton       2: 
1.4     ! anton       3:   Copyright (C) 1995 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., 675 Mass Ave, Cambridge, MA 02139, USA.
1.1       anton      20: */
                     21: 
                     22: #include "32bit.h"
                     23: 
1.3       anton      24: #define FLUSH_ICACHE(addr,size)    cache_$clear()
1.2       anton      25: /* Clearing the whole cache is a bit drastic, but this is the only
                     26:    cache control available on the apollo.
                     27: */
1.3       anton      28: 
                     29: #ifdef DIRECT_THREADED
1.2       anton      30: 
1.1       anton      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 */
1.2       anton      45: #define DOES_CODE(label)       ((Xt *)(((char *)CODE_ADDRESS(label))+DOES_HANDLER_SIZE))
1.1       anton      46: 
                     47: /* this is a special version of DOES_CODE for use in dodoes */
                     48: #define DOES_CODE1(label)      DOES_CODE(label)
                     49: 
1.2       anton      50: /* this stores a call dodoes at addr */
                     51: #define MAKE_DOES_HANDLER(addr) MAKE_CF(addr,symbols[DODOES])
                     52: 
                     53: #define DOES_HANDLER_SIZE       8
                     54: 
                     55: #define MAKE_DOES_CF(addr,doesp)   MAKE_CF(addr,((int)(doesp)-8))
1.1       anton      56: #endif
                     57: