arch/x86/include/asm/sigcontext32.h

   1 #ifndef _ASM_X86_SIGCONTEXT32_H
   2 #define _ASM_X86_SIGCONTEXT32_H
   3
   4 #include <linux/types.h>
   5
   6 /* signal context for 32bit programs. */
   7
   8 #define X86_FXSR_MAGIC          0x0000
   9
  10 struct _fpreg {
  11         unsigned short significand[4];
  12         unsigned short exponent;
  13 };
  14
  15 struct _fpxreg {
  16         unsigned short significand[4];
  17         unsigned short exponent;
  18         unsigned short padding[3];
  19 };
  20
  21 struct _xmmreg {
  22         __u32   element[4];
  23 };
  24
  25 /* FSAVE frame with extensions */
  26 struct _fpstate_ia32 {
  27         /* Regular FPU environment */
  28         __u32   cw;
  29         __u32   sw;
  30         __u32   tag;    /* not compatible to 64bit twd */
  31         __u32   ipoff;
  32         __u32   cssel;
  33         __u32   dataoff;
  34         __u32   datasel;
  35         struct _fpreg   _st[8];
  36         unsigned short  status;
  37         unsigned short  magic;          /* 0xffff = regular FPU data only */
  38
  39         /* FXSR FPU environment */
  40         __u32   _fxsr_env[6];
  41         __u32   mxcsr;
  42         __u32   reserved;
  43         struct _fpxreg  _fxsr_st[8];
  44         struct _xmmreg  _xmm[8];        /* It's actually 16 */
  45         __u32   padding[44];
  46         union {
  47                 __u32 padding2[12];
  48                 struct _fpx_sw_bytes sw_reserved;
  49         };
  50 };
  51
  52 struct sigcontext_ia32 {
  53        unsigned short gs, __gsh;
  54        unsigned short fs, __fsh;
  55        unsigned short es, __esh;
  56        unsigned short ds, __dsh;
  57        unsigned int di;
  58        unsigned int si;
  59        unsigned int bp;
  60        unsigned int sp;
  61        unsigned int bx;
  62        unsigned int dx;
  63        unsigned int cx;
  64        unsigned int ax;
  65        unsigned int trapno;
  66        unsigned int err;
  67        unsigned int ip;
  68        unsigned short cs, __csh;
  69        unsigned int flags;
  70        unsigned int sp_at_signal;
  71        unsigned short ss, __ssh;
  72        unsigned int fpstate;            /* really (struct _fpstate_ia32 *) */
  73        unsigned int oldmask;
  74        unsigned int cr2;
  75 };
  76
  77 #endif /* _ASM_X86_SIGCONTEXT32_H */