import/core/sys/posix/ucontext.d

   1 /**
   2  * D header file for POSIX.
   3  *
   4  * Copyright: Public Domain
   5  * License:   Public Domain
   6  * Authors:   Sean Kelly
   7  * Standards: The Open Group Base Specifications Issue 6, IEEE Std 1003.1, 2004 Edition
   8  */
   9 module core.sys.posix.ucontext;
  10
  11 private import core.sys.posix.config;
  12 public import core.sys.posix.signal; // for sigset_t, stack_t
  13
  14 extern (C):
  15
  16 //
  17 // XOpen (XSI)
  18 //
  19 /*
  20 mcontext_t
  21
  22 struct ucontext_t
  23 {
  24     ucontext_t* uc_link;
  25     sigset_t    uc_sigmask;
  26     stack_t     uc_stack;
  27     mcontext_t  uc_mcontext;
  28 }
  29 */
  30
  31 version( linux )
  32 {
  33
  34     version( X86_64 )
  35     {
  36         private
  37         {
  38             struct _libc_fpxreg
  39             {
  40                 ushort[4] significand;
  41                 ushort    exponent;
  42                 ushort[3] padding;
  43             }
  44
  45             struct _libc_xmmreg
  46             {
  47                 uint[4] element;
  48             }
  49
  50             struct _libc_fpstate
  51             {
  52                 ushort           cwd;
  53                 ushort           swd;
  54                 ushort           ftw;
  55                 ushort           fop;
  56                 ulong            rip;
  57                 ulong            rdp;
  58                 uint             mxcsr;
  59                 uint             mxcr_mask;
  60                 _libc_fpxreg[8]  _st;
  61                 _libc_xmmreg[16] _xmm;
  62                 uint[24]         padding;
  63             }
  64
  65             const NGREG = 23;
  66
  67             alias c_long            greg_t;
  68             alias greg_t[NGREG]     gregset_t;
  69             alias _libc_fpstate*    fpregset_t;
  70         }
  71
  72         struct mcontext_t
  73         {
  74             gregset_t   gregs;
  75             fpregset_t  fpregs;
  76             c_ulong[8]  __reserved1;
  77         }
  78
  79         struct ucontext_t
  80         {
  81             c_ulong         uc_flags;
  82             ucontext_t*     uc_link;
  83             stack_t         uc_stack;
  84             mcontext_t      uc_mcontext;
  85             sigset_t        uc_sigmask;
  86             _libc_fpstate   __fpregs_mem;
  87         }
  88     }
  89     else version( X86 )
  90     {
  91         private
  92         {
  93             struct _libc_fpreg
  94             {
  95               ushort[4] significand;
  96               ushort    exponent;
  97             }
  98
  99             struct _libc_fpstate
 100             {
 101               c_ulong           cw;
 102               c_ulong           sw;
 103               c_ulong           tag;
 104               c_ulong           ipoff;
 105               c_ulong           cssel;
 106               c_ulong           dataoff;
 107               c_ulong           datasel;
 108               _libc_fpreg[8]    _st;
 109               c_ulong           status;
 110             }
 111
 112             const NGREG = 19;
 113
 114             alias int               greg_t;
 115             alias greg_t[NGREG]     gregset_t;
 116             alias _libc_fpstate*    fpregset_t;
 117         }
 118
 119         struct mcontext_t
 120         {
 121             gregset_t   gregs;
 122             fpregset_t  fpregs;
 123             c_ulong     oldmask;
 124             c_ulong     cr2;
 125         }
 126
 127         struct ucontext_t
 128         {
 129             c_ulong         uc_flags;
 130             ucontext_t*     uc_link;
 131             stack_t         uc_stack;
 132             mcontext_t      uc_mcontext;
 133             sigset_t        uc_sigmask;
 134             _libc_fpstate   __fpregs_mem;
 135         }
 136     }
 137 }
 138
 139 //
 140 // Obsolescent (OB)
 141 //
 142 /*
 143 int  getcontext(ucontext_t*);
 144 void makecontext(ucontext_t*, void function(), int, ...);
 145 int  setcontext(in ucontext_t*);
 146 int  swapcontext(ucontext_t*, in ucontext_t*);
 147 */
 148
 149 static if( is( ucontext_t ) )
 150 {
 151     int  getcontext(ucontext_t*);
 152     void makecontext(ucontext_t*, void function(), int, ...);
 153     int  setcontext(in ucontext_t*);
 154     int  swapcontext(ucontext_t*, in ucontext_t*);
 155 }