Annotation of gforth/sparc.h, revision 1.2

1.1       anton       1: /*
                      2:   $Id: sparc.h,v 1.2 1993/02/11 15:57:33 anton Exp $
                      3:   Copyright 1992 by the ANSI figForth Development Group
                      4: 
                      5:   This is the machine-specific part for a SPARC running SunOS
                      6: */
                      7: 
                      8: 
                      9: /* Cell and UCell must be the same size as a pointer */
                     10: typedef long Cell;
                     11: typedef unsigned long UCell;
                     12: 
                     13: /* DCell and UDCell must be twice as large as Cell */
                     14: typedef long long DCell;
                     15: typedef unsigned long long UDCell;
                     16: 
                     17: /* define this if IEEE singles and doubles are available as C data types */
                     18: #define IEEE_FP
                     19: 
                     20: /* the IEEE types are used only for loading and storing */
                     21: /* the IEEE double precision type */
                     22: typedef double DFloat;
                     23: /* the IEEE single precision type */
                     24: typedef float SFloat;
                     25: 
                     26: /* define this if the least-significant byte is at the largets address */
                     27: #define BIG_ENDIAN
                     28: 
                     29: #ifdef DIRECT_THREADED
                     30: /* PFA gives the parameter field address corresponding to a cfa */
                     31: #define PFA(cfa)       (((Cell *)cfa)+2)
                     32: /* PFA1 is a special version for use just after a NEXT1 */
                     33: /* the improvement here is that we may destroy cfa before using PFA1 */
                     34: #define PFA1(cfa)      /* PFA(cfa) */ \
                     35:                        ({register Cell *pfa asm("%15"); \
                     36:                          pfa+2; })
                     37: /* CODE_ADDRESS is the address of the code jumped to through the code field */
                     38: #define CODE_ADDRESS(cfa)      ((Label)((*(unsigned *)(cfa))<<2))
                     39: /* MAKE_CF creates an appropriate code field at the cfa; ca is the code address */
                     40: /* we use call, since 'branch always' only has 22 bits displacement */
                     41: #define MAKE_CF(cfa,ca)        ({long *_cfa        = (long *)(cfa); \
                     42:                          unsigned _ca = (unsigned)(ca); \
                     43:                          _cfa[0] = 0x8000000|((_ca+4-(unsigned)_cfa)>>2) /* CALL ca */ \
                     44:                          _cfa[1] = *(long *)_ca; /* delay slot */})
                     45: #endif
                     46: 
                     47: /* this is the point where the does code starts if label points to the
                     48:  * jump dodoes */
                     49: #define DOES_CODE(label)       (((Xt *)(label))+2)
                     50: 
                     51: /* this is a special version of DOES_CODE for use in dodoes */
                     52: #define DOES_CODE1(label)      ({register Xt *_does_code asm("%15"); \
                     53:                                _does_code+2; })
                     54: 
                     55: /* this stores a call dodoes at addr */
                     56: #define MAKE_DOESJUMP(addr)    ({long *_addr = (long *)(addr); \
                     57:                                  _addr[0] = 0x8000000|((((unsigned)&&dodoes)+4-((unsigned)_addr))>>2) /* CALL dodoes */ \
                     58:                          _addr[1] = *(long *)&&dodoes; /* delay slot */})
                     59: 
                     60: /* OS dependences */
                     61: 
                     62: #define SEEK_SET 0
1.2     ! pazsan     63: 
        !            64: #define memmove(a,b,c) ({ if((long)(a)<(long)(b)) memcpy(a,b,c); \
        !            65:                          else \
        !            66:                            {  int i; \
        !            67:                               for(i=(c)-1; i>=0; i--) \
        !            68:                                  (char*)a[i]=(char*)b[i]; \
        !            69:                            } \
        !            70:                        })
        !            71: #define strtoul(a,b,c) strtol(a,b,c)
        !            72: 

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