arch/x86_64-all/include/aros/cpu.h

   1 #ifndef AROS_X86_64_CPU_H
   2 #define AROS_X86_64_CPU_H
   3
   4 /*
   5     Copyright © 1995-2011, 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 Linux/x86_64 (work in progres...)
  11     Lang: english
  12 */
  13
  14 /* Information about size and alignment,
  15  * the defines have to be numeric constants */
  16 #define AROS_STACK_GROWS_DOWNWARDS 1
  17 #define AROS_BIG_ENDIAN            0
  18 #define AROS_SIZEOFULONG           4 /* Size of an ULONG */
  19 #define AROS_SIZEOFPTR             8 /* Size of a PTR */
  20 #define AROS_WORDALIGN             2 /* Alignment for WORD */
  21 #define AROS_LONGALIGN             4 /* Alignment for LONG */
  22 #define AROS_QUADALIGN             8 /* Alignment for QUAD */
  23 #define AROS_PTRALIGN              8 /* Alignment for PTR */
  24 #define AROS_IPTRALIGN             8 /* Alignment for IPTR */
  25 #define AROS_DOUBLEALIGN           8 /* Alignment for double */
  26 #define AROS_WORSTALIGN           16 /* Worst case alignment */
  27 #define AROS_STACKALIGN           16 /* Clean stack alignment */
  28
  29 /* define this if we have no support for linear varargs in the compiler */
  30 #define NO_LINEAR_VARARGS       1
  31
  32 #define AROS_SLOWSTACKTAGS      1
  33 #define AROS_SLOWSTACKMETHODS   1
  34 #define AROS_SLOWSTACKHOOKS     1
  35
  36 #define AROS_32BIT_TYPE         int
  37 #define AROS_64BIT_TYPE         long
  38 #define AROS_64BIT_STACKTYPE    long
  39
  40 #define AROS_MAKE_INT64(i)  i ## L
  41 #define AROS_MAKE_UINT64(i) i ## UL
  42
  43 #define __WORDSIZE              64
  44
  45 #define STACKED __attribute__((aligned(8)))
  46
  47 /* Use C pointer and string for the BCPL pointers and strings
  48  * For a normal ABI these should not be defined for maximum source code
  49  * compatibility.
  50  */
  51 #define AROS_FAST_BPTR 1
  52 #define AROS_FAST_BSTR 1
  53
  54 /* types and limits for sig_atomic_t */
  55 #define AROS_SIG_ATOMIC_T       int
  56 #define AROS_SIG_ATOMIC_MIN     (-0x7fffffff-1)
  57 #define AROS_SIG_ATOMIC_MAX     0x7fffffff
  58
  59 #if defined(__GNUC__) && !defined(__clang__) && !defined(__TINYC__)
  60 register unsigned char * AROS_GET_SP __asm__("%rsp");
  61 #endif
  62
  63 /*do we need a function attribute to get parameters on the stack? */
  64 #define __stackparm
  65
  66 /*
  67  * Structure representing a jump code.
  68  * Used to build proper seglist header, for example by LoadSeg()
  69  * On x86-64 we use this code:
  70  *     movabsq $vec, %r11
  71  *     jmpq    *%r11
  72 */
  73 struct FullJumpVec
  74 {
  75     unsigned short movabsq;
  76     void          *vec;
  77     unsigned short jmp1;
  78     unsigned char  jmp2;
  79 } __attribute__((packed));
  80
  81 #define __AROS_SET_FULLJMP(v,a) \
  82 do \
  83 {  \
  84     struct FullJumpVec *_v = v; \
  85     _v->movabsq = 0xBB49;       \
  86     _v->vec     = (a);          \
  87     _v->jmp1    = 0xFF41;       \
  88     _v->jmp2    = 0xE3;         \
  89 } while (0)
  90
  91 /*
  92  * One entry in libraries' vector table.
  93  * On x86-64 we use vector table consisting only of pointers.
  94  * We do not include jump code in them.
  95  */
  96 struct JumpVec
  97 {
  98     void *vec;
  99 };
 100
 101 /* Use these to access a vector table */
 102 #define LIB_VECTSIZE                    ((int)sizeof (struct JumpVec))
 103 #define __AROS_GETJUMPVEC(lib,n)        (&((struct JumpVec *)lib)[-(long)(n)])
 104 #define __AROS_GETVECADDR(lib,n)        (__AROS_GETJUMPVEC(lib,n)->vec)
 105 #define __AROS_SETVECADDR(lib,n,addr)   (__AROS_GETJUMPVEC(lib,n)->vec = (addr))
 106 #define __AROS_INITVEC(lib,n)           __AROS_SETVECADDR(lib,n,_aros_not_implemented)
 107
 108 /*
 109    We want to activate the execstubs and preserve all registers
 110    when calling obtainsemaphore, obtainsemaphoreshared, releasesemaphore,
 111    getcc, permit, forbid, enable, disable
 112 */
 113 #undef UseExecstubs
 114 #define UseExecstubs 1
 115
 116 /* Macros to test/set failure of AllocEntry() */
 117 #define AROS_ALLOCENTRY_FAILED(memType) \
 118         ((struct MemList *)((IPTR)(memType) | 0x80ul<<(sizeof(APTR)-1)*8))
 119 #define AROS_CHECK_ALLOCENTRY(memList) \
 120         (!((IPTR)(memList) & 0x80ul<<(sizeof(APTR)-1)*8))
 121
 122 /*
 123     Find the next valid alignment for a structure if the next x bytes must
 124     be skipped.
 125 */
 126 #define AROS_ALIGN(x)        (((x)+AROS_WORSTALIGN-1)&-AROS_WORSTALIGN)
 127
 128 /* Prototypes */
 129 extern void _aros_not_implemented (char *);
 130
 131 /* How much stack do we need ? Lots :-) */
 132 #define AROS_STACKSIZE  40960
 133
 134 /* How to map function arguments to CPU registers */
 135 /*
 136     The i386 processor doesn't have enough registers to map the m68k
 137     register set onto them - so simply use the compiler's calling
 138     convention. The library base is mapped to the last argument so that
 139     it can be ignored by the function.
 140 */
 141
 142 /* What to do with the library base in header, prototype and call */
 143 #define __AROS_LH_BASE(basetype,basename)   basetype basename
 144 #define __AROS_LP_BASE(basetype,basename)   void *
 145 #define __AROS_LC_BASE(basetype,basename)   basename
 146 #define __AROS_LD_BASE(basetype,basename)   basetype
 147
 148 /* How to transform an argument in header, opt prototype, call and forced
 149    prototype. */
 150 #define __AROS_LHA(type,name,reg)     type name
 151 #define __AROS_LPA(type,name,reg)     type
 152 #define __AROS_LCA(type,name,reg)     name
 153 #define __AROS_LDA(type,name,reg)     type
 154 #define __AROS_UFHA(type,name,reg)    type name
 155 #define __AROS_UFPA(type,name,reg)    type
 156 #define __AROS_UFCA(type,name,reg)    name
 157 #define __AROS_UFDA(type,name,reg)    type
 158 #define __AROS_LHAQUAD(type,name,reg1,reg2)     type name
 159 #define __AROS_LPAQUAD(type,name,reg1,reg2)     type
 160 #define __AROS_LCAQUAD(type,name,reg1,reg2)     name
 161 #define __AROS_LDAQUAD(type,name,reg1,reg2)     type
 162
 163 /* Prefix for library function in header, prototype and call */
 164 #define __AROS_LH_PREFIX    /* eps */
 165 #define __AROS_LP_PREFIX    /* eps */
 166 #define __AROS_LC_PREFIX    /* eps */
 167 #define __AROS_LD_PREFIX    /* eps */
 168 #define __AROS_UFH_PREFIX   /* eps */
 169 #define __AROS_UFP_PREFIX   /* eps */
 170 #define __AROS_UFC_PREFIX   /* eps */
 171 #define __AROS_UFD_PREFIX   /* eps */
 172
 173 #endif /* AROS_X86_64_CPU_H */