include/asm-x86/sigcontext32.h

   1 #ifndef ASM_X86__SIGCONTEXT32_H
   2 #define ASM_X86__SIGCONTEXT32_H
   3
   4 /* signal context for 32bit programs. */
   5
   6 #define X86_FXSR_MAGIC          0x0000
   7
   8 struct _fpreg {
   9         unsigned short significand[4];
  10         unsigned short exponent;
  11 };
  12
  13 struct _fpxreg {
  14         unsigned short significand[4];
  15         unsigned short exponent;
  16         unsigned short padding[3];
  17 };
  18
  19 struct _xmmreg {
  20         __u32   element[4];
  21 };
  22
  23 /* FSAVE frame with extensions */
  24 struct _fpstate_ia32 {
  25         /* Regular FPU environment */
  26         __u32   cw;
  27         __u32   sw;
  28         __u32   tag;    /* not compatible to 64bit twd */
  29         __u32   ipoff;
  30         __u32   cssel;
  31         __u32   dataoff;
  32         __u32   datasel;
  33         struct _fpreg   _st[8];
  34         unsigned short  status;
  35         unsigned short  magic;          /* 0xffff = regular FPU data only */
  36
  37         /* FXSR FPU environment */
  38         __u32   _fxsr_env[6];
  39         __u32   mxcsr;
  40         __u32   reserved;
  41         struct _fpxreg  _fxsr_st[8];
  42         struct _xmmreg  _xmm[8];        /* It's actually 16 */
  43         __u32   padding[44];
  44         union {
  45                 __u32 padding2[12];
  46                 struct _fpx_sw_bytes sw_reserved;
  47         };
  48 };
  49
  50 struct sigcontext_ia32 {
  51        unsigned short gs, __gsh;
  52        unsigned short fs, __fsh;
  53        unsigned short es, __esh;
  54        unsigned short ds, __dsh;
  55        unsigned int di;
  56        unsigned int si;
  57        unsigned int bp;
  58        unsigned int sp;
  59        unsigned int bx;
  60        unsigned int dx;
  61        unsigned int cx;
  62        unsigned int ax;
  63        unsigned int trapno;
  64        unsigned int err;
  65        unsigned int ip;
  66        unsigned short cs, __csh;
  67        unsigned int flags;
  68        unsigned int sp_at_signal;
  69        unsigned short ss, __ssh;
  70        unsigned int fpstate;            /* really (struct _fpstate_ia32 *) */
  71        unsigned int oldmask;
  72        unsigned int cr2;
  73 };
  74
  75 #endif /* ASM_X86__SIGCONTEXT32_H */