arch/ppc-all/common/include/aros/machine.h

   1 #pragma pack(2)
   2 #ifndef AROS_MACHINE_H
   3 #define AROS_MACHINE_H
   4
   5 /*
   6     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   7     $Id$
   8
   9     NOTE: This file must compile *without* any other header !
  10
  11     Desc: machine.h include file for PPC systems
  12     Lang: english
  13 */
  14
  15 /* Information generated by machine.c */
  16 #define AROS_STACK_GROWS_DOWNWARDS 1 /* Stack direction */
  17 #define AROS_BIG_ENDIAN            1 /* Big or little endian */
  18 #define AROS_SIZEOFULONG           4 /* Size of an ULONG */
  19 #define AROS_WORDALIGN             2 /* Alignment for WORD */
  20 #define AROS_LONGALIGN             2 /* Alignment for LONG */
  21 #define AROS_PTRALIGN              2 /* Alignment for PTR */
  22 #define AROS_IPTRALIGN             2 /* Alignment for IPTR */
  23 #define AROS_DOUBLEALIGN           2 /* Alignment for double */
  24 #define AROS_WORSTALIGN            8 /* Worst case alignment */
  25
  26 #define AROS_GET_SYSBASE        extern struct ExecBase * SysBase;
  27 #define AROS_GET_DOSBASE        extern struct DosLibrary * DOSBase;
  28
  29 /* do we need a function attribute to get parameters on the stack? */
  30 #define __stackparm __attribute__((stackparm))
  31
  32 #define AROS_SLOWSTACKTAGS      1
  33 #define AROS_SLOWSTACKMETHODS   1
  34
  35 /*
  36     How much do I have to add to sp to get the address of the first
  37     byte on the stack?
  38
  39     Note for PPC. This includes the proper stack offset needed for frame
  40     linking. Usually it is 32 bytes
  41 */
  42 #define SP_OFFSET 0x20
  43
  44 /*
  45     One entry in a libraries' jumptable. For assembler compatibility, the
  46     field jmp should contain the code for an absolute jmp to a 32bit
  47     address. There are also a couple of macros which you should use to
  48     access the vector table from C.
  49 */
  50 struct JumpVec
  51 {
  52     unsigned short jmp;
  53     unsigned char vec[4];
  54 };
  55
  56 /* Any jump to an unimplemented vector will cause an access to this address */
  57 #define _aros_empty_vector              0xc0edbabe
  58
  59 /* Internal macros */
  60 #define __AROS_ASMJMP                   0x4EF9
  61 #define __AROS_FAKEJMP                  0xDEAD
  62 #define __AROS_SET_VEC(v,a)             (*(ULONG*)(v)->vec=(ULONG)(a))
  63 #define __AROS_GET_VEC(v)               ((APTR)(*(ULONG*)(v)->vec))
  64
  65 /* Use these to acces a vector table */
  66 #define LIB_VECTSIZE                      (sizeof (struct JumpVec))
  67 #define __AROS_GETJUMPVEC(lib,n)        ((struct JumpVec *)(((UBYTE *)lib)-(n*LIB_VECTSIZE)))
  68 #define __AROS_GETVECADDR(lib,n)        (__AROS_GET_VEC(__AROS_GETJUMPVEC(lib,n)))
  69 #define __AROS_SETVECADDR(lib,n,addr)   (__AROS_SET_VEC(__AROS_GETJUMPVEC(lib,n),(APTR)(addr)))
  70 #define __AROS_INITVEC(lib,n)           __AROS_SETVECADDR(lib,n,_aros_not_implemented)
  71
  72 /*
  73    We want to activate the execstubs and preserve all registers
  74    when calling obtainsemaphore, obtainsemaphoreshared, releasesemaphore,
  75    getcc, permit, forbid, enable, disable
  76 */
  77 #undef UseExecstubs
  78 #define UseExecstubs 1
  79
  80 /* Macros to test/set failure of AllocEntry() */
  81 #define AROS_ALLOCENTRY_FAILED(memType) \
  82         ((struct MemList *)((IPTR)(memType) | 0x80ul<<(sizeof(APTR)-1)*8))
  83 #define AROS_CHECK_ALLOCENTRY(memList) \
  84         (!((IPTR)(memList) & 0x80ul<<(sizeof(APTR)-1)*8))
  85
  86 /*
  87     Find the next valid alignment for a structure if the next x bytes must
  88     be skipped.
  89 */
  90 #define AROS_ALIGN(x)        (((x)+AROS_WORSTALIGN-1)&-AROS_WORSTALIGN)
  91
  92 /* Prototypes */
  93 extern void _aros_not_implemented (void);
  94 extern void aros_not_implemented (void);
  95
  96 /* How much stack do we need ? Lots :-) */
  97 #define AROS_STACKSIZE  32768
  98
  99 /* RawDoFmt hook */
 100 #define RDFCALL(hook,data,dptr) ((void(*)(UBYTE __d0,APTR __a3))(hook))(data,dptr);
 101
 102 /* What to do with the library base in header, prototype and call */
 103 #define __AROS_LH_BASE(basetype,basename)   basetype basename = (basetype)__A6
 104 #define __AROS_LP_BASE(basetype,basename)   basetype __base = basename
 105 #define __AROS_LC_BASE(basetype,basename)   __A6 = (LONG)__base
 106 #define __AROS_LD_BASE(basetype,basename)   basetype basename
 107
 108 /* How to transform an argument in header, prototype and call */
 109 #define __AROS_LHA(type,name,reg)     type name = (type) __##reg
 110 #define __AROS_LPA(type,name,reg)     type r##reg = name
 111 #define __AROS_LCA(type,name,reg)     __##reg = (LONG)r##reg
 112 #define __AROS_LDA(type,name,reg)     type
 113 #define __AROS_UFHA(type,name,reg)    type name = (type) __##reg
 114 #define __AROS_UFPA(type,name,reg)    type r##reg = name
 115 #define __AROS_UFCA(type,name,reg)    __##reg = (LONG)r##reg
 116 #define __AROS_UFDA(type,name,reg)    type
 117
 118 /* Prefix for library function in header, prototype and call */
 119 #define __AROS_LH_PREFIX    /* eps */
 120 #define __AROS_LP_PREFIX    /* eps */
 121 #define __AROS_LC_PREFIX    /* eps */
 122 #define __AROS_LD_PREFIX    /* eps */
 123 #define __AROS_UFH_PREFIX   /* eps */
 124 #define __AROS_UFP_PREFIX   /* eps */
 125 #define __AROS_UFC_PREFIX   /* eps */
 126 #define __AROS_UFD_PREFIX   /* eps */
 127
 128 /* if this is defined, all AROS_LP*-macros will expand to nothing. */
 129 //#define __AROS_USE_MACROS_FOR_LIBCALL
 130
 131 #endif /* AROS_MACHINE_H */
 132
 133
 134 #pragma pack()
 135