arch/.unmaintained/ppc-native/machine.h

   1 #ifndef AROS_MACHINE_H
   2 #define AROS_MACHINE_H
   3
   4 /*
   5     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   6     $Id$
   7
   8     NOTE: This file must compile *without* any other header !
   9
  10     Desc: machine.h include file for Amiga/m68k
  11     Lang: english
  12 */
  13
  14 /* Information generated by machine.c */
  15 #define AROS_STACK_GROWS_DOWNWARDS 1 /* Stack direction */
  16 #define AROS_BIG_ENDIAN            1 /* Big or little endian */
  17 #define AROS_SIZEOFULONG           4 /* Size of an ULONG */
  18 #define AROS_WORDALIGN             2 /* Alignment for WORD */
  19 #define AROS_LONGALIGN             2 /* Alignment for LONG */
  20 #define AROS_PTRALIGN              2 /* Alignment for PTR */
  21 #define AROS_IPTRALIGN             2 /* Alignment for IPTR */
  22 #define AROS_DOUBLEALIGN           2 /* Alignment for double */
  23 #define AROS_WORSTALIGN            8 /* Worst case alignment */
  24
  25 #define AROS_GET_SYSBASE        extern struct ExecBase * SysBase;
  26 #define AROS_GET_DOSBASE        extern struct DosLibrary * DOSBase;
  27
  28 /* do we need a function attribute to get parameters on the stack? */
  29 #define __stackparm
  30
  31 /*
  32     How much do I have to add to sp to get the address of the first
  33     byte on the stack?
  34 */
  35 #define SP_OFFSET 0
  36
  37 /*
  38     One entry in a libraries' jumptable. For assembler compatibility, the
  39     field jmp should contain the code for an absolute jmp to a 32bit
  40     address. There are also a couple of macros which you should use to
  41     access the vector table from C.
  42 */
  43 struct JumpVec
  44 {
  45     unsigned char vec[4];
  46 };
  47
  48 /* Any jump to an unimplemented vector will cause an access to this address */
  49 #define _aros_empty_vector              0xc0edbabe
  50
  51 /* Internal macros */
  52 #define __AROS_SET_VEC(v,a)             (*(ULONG*)(v)->vec=(ULONG)(a))
  53 #define __AROS_GET_VEC(v)               ((APTR)(*(ULONG*)(v)->vec))
  54
  55 /* Use these to acces a vector table */
  56 #define LIB_VECTSIZE                    (sizeof (struct JumpVec))
  57 #define __AROS_GETJUMPVEC(lib,n)        ((struct JumpVec *)(((UBYTE *)lib)-(n*LIB_VECTSIZE)))
  58 #define __AROS_GETVECADDR(lib,n)        (__AROS_GET_VEC(__AROS_GETJUMPVEC(lib,n)))
  59 #define __AROS_SETVECADDR(lib,n,addr)   (__AROS_SET_VEC(__AROS_GETJUMPVEC(lib,n),(APTR)(addr)))
  60 #define __AROS_INITVEC(lib,n)           __AROS_SETVECADDR(lib,n,_aros_not_implemented)
  61
  62 /*
  63    We want to activate the execstubs and preserve all registers
  64    when calling obtainsemaphore, obtainsemaphoreshared, releasesemaphore,
  65    getcc, permit, forbid, enable, disable
  66 */
  67 #undef UseExecstubs
  68 #define UseExecstubs 1
  69
  70 /* Macros to test/set failure of AllocEntry() */
  71 #define AROS_ALLOCENTRY_FAILED(memType) \
  72         ((struct MemList *)((IPTR)(memType) | 0x80ul<<(sizeof(APTR)-1)*8))
  73 #define AROS_CHECK_ALLOCENTRY(memList) \
  74         (!((IPTR)(memList) & 0x80ul<<(sizeof(APTR)-1)*8))
  75
  76 /*
  77     Find the next valid alignment for a structure if the next x bytes must
  78     be skipped.
  79 */
  80 #define AROS_ALIGN(x)        (((x)+AROS_WORSTALIGN-1)&-AROS_WORSTALIGN)
  81
  82 /* Prototypes */
  83 extern void _aros_not_implemented ();
  84 extern void aros_not_implemented ();
  85
  86 /* How much stack do we need ? Lots :-) */
  87 #define AROS_STACKSIZE  100000
  88
  89 /* RawDoFmt hook */
  90 #define RDFCALL(hook,data,dptr) ((void(*)(UBYTE __d0,APTR __a3))(hook))(data,dptr);
  91
  92 /* What to do with the library base in header, prototype and call */
  93 #define __AROS_LH_BASE(basetype,basename)   basetype basename __asm("r2")
  94 #define __AROS_LP_BASE(basetype,basename)   void * __asm("r2")
  95 #define __AROS_LC_BASE(basetype,basename)   basename
  96 #define __AROS_LD_BASE(basetype,basename)   basetype __asm("r2")
  97
  98 /* How to transform an argument in header, prototype and call */
  99 #define __AROS_LHA(type,name,reg)     type name
 100 #define __AROS_LPA(type,name,reg)     type
 101 #define __AROS_LCA(type,name,reg)     name
 102 #define __AROS_LDA(type,name,reg)     type
 103 #define __AROS_UFHA(type,name,reg)    type name
 104 #define __AROS_UFPA(type,name,reg)    type
 105 #define __AROS_UFCA(type,name,reg)    name
 106 #define __AROS_UFDA(type,name,reg)    type
 107
 108 /* Prefix for library function in header, prototype and call */
 109 #define __AROS_LH_PREFIX    /* eps */
 110 #define __AROS_LP_PREFIX    /* eps */
 111 #define __AROS_LC_PREFIX    /* eps */
 112 #define __AROS_LD_PREFIX    /* eps */
 113 #define __AROS_UFH_PREFIX   /* eps */
 114 #define __AROS_UFP_PREFIX   /* eps */
 115 #define __AROS_UFC_PREFIX   /* eps */
 116 #define __AROS_UFD_PREFIX   /* eps */
 117
 118 /* if this is defined, all AROS_LP*-macros will expand to nothing. */
 119 #define __AROS_USE_MACROS_FOR_LIBCALL
 120
 121 #endif /* AROS_MACHINE_H */
 122