#ifndef AROS_MACHINE_H
#define AROS_MACHINE_H
/*
    (C) 1995-96 AROS - The Amiga Replacement OS
    $Id: machine.h,v 1.9 1996/10/24 15:40:03 aros Exp $

    NOTE: This file must compile *without* any other header !

    Desc: machine.h include file for Linux/i386 and FreeBSD/i386
    Lang: english
*/

/* Information generated by machine.c */
#define AROS_STACK_GROWS_DOWNWARDS 1 /* Stack direction */
#define AROS_BIG_ENDIAN 	   0 /* Big or little endian */
#define AROS_SIZEOFULONG	   4 /* Size of an ULONG */
#define AROS_WORDALIGN		   2 /* Alignment for WORD */
#define AROS_LONGALIGN		   4 /* Alignment for LONG */
#define AROS_PTRALIGN		   4 /* Alignment for PTR */
#define AROS_IPTRALIGN		   4 /* Alignment for IPTR */
#define AROS_DOUBLEALIGN	   4 /* Alignment for double */
#define AROS_WORSTALIGN 	   4 /* Worst case alignment */

/* ??? */
#define SP_OFFSET 0

/*
    Replace BPTRs by simple APTRs for this machine. On Amiga with binary
    compatibility, this would look like this:

    typedef ULONG BPTR;
    #define MKBADDR(a)      (((BPTR)(a))>>2)
    #define BADDR(a)        (((APTR)(a))<<2)
*/
#define AROS_BPTR_TYPE	APTR
#define MKBADDR(a)      ((APTR)(a))
#define BADDR(a)        (a)

/*
    One entry in a libraries' jumptable. For assembler compatibility, the
    field jmp should contain the code for an absolute jmp to a 32bit
    address. There are also a couple of macros which you should use to
    access the vector table from C.
*/
struct JumpVec
{
    unsigned char jmp;
    unsigned char vec[4];
};
/* Internal macros */
#define __AROS_ASMJMP			0xE9
#define __AROS_SET_VEC(v,a)             (*(ULONG*)(v)->vec=(ULONG)(a)-(ULONG)(v)-5)
#define __AROS_GET_VEC(v)               ((APTR)(*(ULONG*)(v)->vec+(ULONG)(v)+5))

/* Use these to acces a vector table */
#define LIB_VECTSIZE			(sizeof (struct JumpVec))
#define __AROS_GETJUMPVEC(lib,n)        ((struct JumpVec *)(((UBYTE *)lib)-(n*LIB_VECTSIZE)))
#define __AROS_GETVECADDR(lib,n)        (__AROS_GET_VEC(__AROS_GETJUMPVEC(lib,n)))
#define __AROS_SETVECADDR(lib,n,addr)   (__AROS_SET_VEC(__AROS_GETJUMPVEC(lib,n),(APTR)(addr)))
#define __AROS_INITVEC(lib,n)           __AROS_GETJUMPVEC(lib,n)->jmp = __AROS_ASMJMP, \
					__AROS_SETVECADDR(lib,n,_aros_not_implemented)

/* ??? */
#define RDFCALL(hook,data,dptr) ((void(*)(UBYTE,APTR))(hook))(data,dptr);

/*
    Find the next valid alignment for a structure if the next x bytes must
    be skipped.
*/
#define AROS_ALIGN(x)        (((x)+AROS_WORSTALIGN-1)&-AROS_WORSTALIGN)

/* Prototypes */
extern void _aros_not_implemented (void);

/* How much stack do we need ? Lots :-) */
#define AROS_STACKSIZE	100000

/* How to map function arguments to CPU registers */
/*
    The i386 processor doesn't have enough registers to map the m68k
    register set onto them - so simply use the compiler's calling
    convention. The library base is mapped to the last argument so that
    it can be ignored by the function.
*/

/* What to do with the library base in header, prototype and call */
#define __AROS_LH_BASE(basetype,basename)   basetype basename
#define __AROS_LP_BASE(basetype,basename)   void *
#define __AROS_LC_BASE(basetype,basename)   basename

/* How to transform an argument in header, prototype and call */
#define __AROS_LHA(type,name,reg)     type name
#define __AROS_LPA(type,name,reg)     type
#define __AROS_LCA(type,name,reg)     name
#define __AROS_UFHA(type,name,reg)    type name
#define __AROS_UFPA(type,name,reg)    type
#define __AROS_UFCA(type,name,reg)    name

/* Prefix for library function in header, prototype and call */
#define __AROS_LH_PREFIX    /* eps */
#define __AROS_LP_PREFIX    /* eps */
#define __AROS_LC_PREFIX    /* eps */
#define __AROS_UFH_PREFIX   /* eps */
#define __AROS_UFP_PREFIX   /* eps */
#define __AROS_UFC_PREFIX   /* eps */

/* if this is defined, all AROS_LP*-macros will expand to nothing. */
#define __AROS_USE_MACROS_FOR_LIBCALL

#endif /* AROS_MACHINE_H */