Diff for /gforth/Attic/386.h between versions 1.1 and 1.7

version 1.1, 1994/02/11 16:30:45 version 1.7, 1994/12/12 17:10:27
Line 1 Line 1
 /*  /*
   $Id$  
   Copyright 1992 by the ANSI figForth Development Group    Copyright 1992 by the ANSI figForth Development Group
   
   This is the machine-specific part for Intel 386 compatible processors    This is the machine-specific part for Intel 386 compatible processors
 */  */
   
   #include "32bit.h"
   
 /* Cell and UCell must be the same size as a pointer */  /* indirect threading is faster on the 486, on the 386 direct
 typedef long Cell;     threading is probably faster. Therefore we leave defining
 typedef unsigned long UCell;     DIRECT_THREADED to configure */
   
 /* DCell and UDCell must be twice as large as Cell */  /* define this if the processor cannot exploit instruction-level
 typedef long long DCell;     parallelism (no pipelining or too few registers) */
 typedef unsigned long long UDCell;  #define CISC_NEXT
   
 /* define this if IEEE singles and doubles are available as C data types */  
 #define IEEE_FP  
   
 /* the IEEE types are used only for loading and storing */  
 /* the IEEE double precision type */  
 typedef double DFloat;  
 /* the IEEE single precision type */  
 typedef float SFloat;  
   
 /* define this if the least-significant byte is at the largets address */  
 /* #define BIG_ENDIAN */  
   
 #ifdef DIRECT_THREADED  #ifdef DIRECT_THREADED
 /* PFA gives the parameter field address corresponding to a cfa */  /* PFA gives the parameter field address corresponding to a cfa */
Line 32  typedef float SFloat; Line 20  typedef float SFloat;
 /* PFA1 is a special version for use just after a NEXT1 */  /* PFA1 is a special version for use just after a NEXT1 */
 #define PFA1(cfa)       PFA(cfa)  #define PFA1(cfa)       PFA(cfa)
 /* CODE_ADDRESS is the address of the code jumped to through the code field */  /* CODE_ADDRESS is the address of the code jumped to through the code field */
 #define CODE_ADDRESS(cfa)       ({long _cfa = (char *)(cfa); (Label)(_cfa+*((long *)(_cfa+1))-5);})  #define CODE_ADDRESS(cfa) \
       ({long _cfa = (long)(cfa); (Label)(_cfa+*((long *)(_cfa+1))+5);})
 /* MAKE_CF creates an appropriate code field at the cfa; ca is the code address */  /* MAKE_CF creates an appropriate code field at the cfa; ca is the code address */
 #define MAKE_CF(cfa,ca) ({long _cfa = (long *)(cfa); \  #define MAKE_CF(cfa,ca) ({long _cfa = (long)(cfa); \
                             long _ca  = (long)(ca); \
                           *(char *)_cfa = 0xe9; /* jmp */ \                            *(char *)_cfa = 0xe9; /* jmp */ \
                           *(long *)(_cfa+1) = ((long)(ca))-(_cfa+5);})                            *(long *)(_cfa+1) = _ca-(_cfa+5);})
   
 /* this is the point where the does code starts if label points to the  /* this is the point where the does code starts if label points to the
  * jump dodoes */   * jump dodoes */
 #define DOES_CODE(label)        ((Xt *)(((char *)label)+8))  #define DOES_HANDLER_SIZE       8
   #define DOES_CODE(label)        ((Xt *)(CODE_ADDRESS(label)+DOES_HANDLER_SIZE))
   
 /* this is a special version of DOES_CODE for use in dodoes */  /* this is a special version of DOES_CODE for use in dodoes */
 #define DOES_CODE1(label)       DOES_CODE(label)  #define DOES_CODE1(label)       DOES_CODE(label)
   
 /* this stores a jump dodoes at addr */  /* this stores a jump dodoes at addr */
 #define MAKE_DOESJUMP(addr)     ({long _addr = (long *)(addr); \  #define MAKE_DOES_HANDLER(addr) MAKE_CF(addr,symbols[DODOES])
                                   *(char *)_addr = 0xe9; /* jmp */ \  
                                   *(long *)(_addr+1) = ((long)(&&dodoes))-(_addr+5);})  #define MAKE_DOES_CF(addr,doesp) MAKE_CF(addr,((int)(doesp)-8))
 #endif  #endif
   
   #ifdef FORCE_REG
   #define IPREG asm("%esi")
   #define SPREG asm("%edi")
   #ifdef USE_TOS
   #define CFAREG asm("%ecx")
   #else
   #define CFAREG asm("%edx")
   #endif
   #endif /* FORCE_REG */

Removed from v.1.1  
changed lines
  Added in v.1.7


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