arch/aarch64-all/include/aros/cpu.h

   1 #ifndef AROS_AARCH64_CPU_H
   2 #define AROS_AARCH64_CPU_H
   3
   4 /*
   5     Copyright © 2016, The AROS Development Team. All rights reserved.
   6     $Id$
   7
   8     NOTE: This file must compile *without* any other header !
   9
  10     Desc: cpu.h include file for aarch64-le systems
  11     Lang: english
  12 */
  13
  14 /* Translate __ARM_ARCH_X__ definitions to a common one. Makes it easier to write conditional code. */
  15 #ifdef __ARM_ARCH_8A__
  16 #define __ARM_ARCH__ 8
  17 #endif
  18
  19 typedef unsigned int    cpuid_t;
  20 typedef unsigned int    cpumask_t;
  21
  22 /* Information about size and alignment,
  23  * the defines have to be numeric constants */
  24 #define AROS_STACK_GROWS_DOWNWARDS 1 /* Stack direction */
  25 #define AROS_BIG_ENDIAN            0 /* Big or little endian */
  26 #define AROS_SIZEOFULONG           4 /* Size of an ULONG */
  27 #define AROS_SIZEOFPTR             8 /* Size of a PTR */
  28 #define AROS_WORDALIGN             2 /* Alignment for WORD */
  29 #define AROS_LONGALIGN             4 /* Alignment for LONG */
  30 #define AROS_QUADALIGN             8 /* Alignment for QUAD */
  31 #define AROS_PTRALIGN              8 /* Alignment for PTR */
  32 #define AROS_IPTRALIGN             8 /* Alignment for IPTR */
  33 #define AROS_DOUBLEALIGN           8 /* Alignment for double */
  34 #define AROS_WORSTALIGN           16 /* Worst case alignment */
  35 #define AROS_STACKALIGN           16 /* FIXME: is this really needed? */
  36
  37 /* define this if we have no support for linear varargs in the compiler */
  38 #define NO_LINEAR_VARARGS       1
  39
  40 /* Do not use patched compiler. */
  41 #define AROS_SLOWSTACKTAGS      1
  42 #define AROS_SLOWSTACKMETHODS   1
  43 #define AROS_SLOWSTACKHOOKS     1
  44 #define AROS_SLOWSTACKFORMAT    1
  45
  46 #define AROS_32BIT_TYPE         int
  47 #define AROS_64BIT_TYPE         long
  48 #define AROS_64BIT_STACKTYPE    long
  49
  50 #define AROS_MAKE_INT64(i)  i ## L
  51 #define AROS_MAKE_UINT64(i) i ## UL
  52
  53 #define __WORDSIZE              64
  54
  55 #define STACKED __attribute__((aligned(8)))
  56
  57 /* Use C pointer and string for the BCPL pointers and strings
  58  * For a normal ABI these should not be defined for maximum source code
  59  * compatibility.
  60  */
  61 #define AROS_FAST_BPTR 1
  62 #define AROS_FAST_BSTR 1
  63
  64 /* do we need a function attribute to get parameters on the stack? */
  65 #define __stackparm
  66
  67 /* types and limits for sig_atomic_t */
  68 #define AROS_SIG_ATOMIC_T       int
  69 #define AROS_SIG_ATOMIC_MIN     (-0x7fffffff-1)
  70 #define AROS_SIG_ATOMIC_MAX     0x7fffffff
  71
  72 #if defined(__GNUC__) && !defined(__clang__)
  73 register unsigned char* AROS_GET_SP __asm__("%sp");
  74 #endif
  75
  76 /*
  77     One entry in a libraries' jumptable. For assembler compatibility, the
  78     field jmp should contain the code for an absolute jmp to a 32bit
  79     address. There are also a couple of macros which you should use to
  80     access the vector table from C.
  81 */
  82 struct FullJumpVec
  83 {
  84     unsigned long jmp;
  85     unsigned long vec;
  86 };
  87 #define __AROS_SET_FULLJMP(v,a) \
  88 do \
  89 {  \
  90     struct FullJumpVec *_v = (v); \
  91     _v->jmp = 0xe51ff004;               /* ldr pc, [pc, #-4] */         \
  92     _v->vec = (a);              /* target_address */    \
  93 } while (0)
  94
  95 struct JumpVec
  96 {
  97         void * vec;
  98 };
  99
 100 /* Use these to acces a vector table */
 101 #define LIB_VECTSIZE                    ((int)sizeof (struct JumpVec))
 102 #define __AROS_GETJUMPVEC(lib,n)        (&((struct JumpVec *)lib)[-(long)(n)])
 103 #define __AROS_GETVECADDR(lib,n)        (__AROS_GETJUMPVEC(lib,n)->vec)
 104 #define __AROS_SETVECADDR(lib,n,addr)   (__AROS_GETJUMPVEC(lib,n)->vec = (addr))
 105 #define __AROS_INITVEC(lib,n)           __AROS_SETVECADDR(lib,n,_aros_not_implemented)
 106
 107 /* Register preservation is still useful. At least for stack swapping functions. */
 108 #undef UseExecstubs
 109 #define UseExecstubs 1
 110
 111 /* Macros to test/set failure of AllocEntry() */
 112 #define AROS_ALLOCENTRY_FAILED(memType) \
 113         ((struct MemList *)((IPTR)(memType) | 0x80ul<<(sizeof(APTR)-1)*8))
 114 #define AROS_CHECK_ALLOCENTRY(memList) \
 115         (!((IPTR)(memList) & 0x80ul<<(sizeof(APTR)-1)*8))
 116
 117 /*
 118     Find the next valid alignment for a structure if the next x bytes must
 119     be skipped.
 120 */
 121 #define AROS_ALIGN(x)        (((x)+AROS_WORSTALIGN-1)&-AROS_WORSTALIGN)
 122
 123 /* Prototypes */
 124 extern void _aros_not_implemented ();
 125
 126 /* How much stack do we need ? Lots :-) */
 127 #define AROS_STACKSIZE  40960
 128
 129 /* How to map function arguments to CPU registers */
 130 /*
 131     The ARM processor does have enough registers to map the m68k
 132     register set onto them but we will ignore this and use the compiler's calling
 133     convention. The library base is mapped to the last argument so that
 134     it can be ignored by the function.
 135 */
 136
 137 /* What to do with the library base in header, prototype and call */
 138 #define __AROS_LH_BASE(basetype,basename)   basetype basename
 139 #define __AROS_LP_BASE(basetype,basename)   void *
 140 #define __AROS_LC_BASE(basetype,basename)   basename
 141 #define __AROS_LD_BASE(basetype,basename)   basetype
 142
 143 /* How to transform an argument in header, opt prototype, call and forced
 144    prototype. */
 145 #define __AROS_LHA(type,name,reg)     type name
 146 #define __AROS_LPA(type,name,reg)     type
 147 #define __AROS_LCA(type,name,reg)     name
 148 #define __AROS_LDA(type,name,reg)     type
 149 #define __AROS_UFHA(type,name,reg)    type name
 150 #define __AROS_UFPA(type,name,reg)    type
 151 #define __AROS_UFCA(type,name,reg)    name
 152 #define __AROS_UFDA(type,name,reg)    type
 153 #define __AROS_LHAQUAD(type,name,reg1,reg2)     type name
 154 #define __AROS_LPAQUAD(type,name,reg1,reg2)     type
 155 #define __AROS_LCAQUAD(type,name,reg1,reg2)     name
 156 #define __AROS_LDAQUAD(type,name,reg1,reg2)     type
 157
 158 /* Prefix for library function in header, prototype and call */
 159 #define __AROS_LH_PREFIX    /* eps */
 160 #define __AROS_LP_PREFIX    /* eps */
 161 #define __AROS_LC_PREFIX    /* eps */
 162 #define __AROS_LD_PREFIX    /* eps */
 163 #define __AROS_UFH_PREFIX   /* eps */
 164 #define __AROS_UFP_PREFIX   /* eps */
 165 #define __AROS_UFC_PREFIX   /* eps */
 166 #define __AROS_UFD_PREFIX   /* eps */
 167
 168 #endif /* AROS_AARCH64_CPU_H */