arch/x86/include/uapi/asm/sigcontext32.h

   1 #ifndef _ASM_X86_SIGCONTEXT32_H
   2 #define _ASM_X86_SIGCONTEXT32_H
   3
   4 /* Signal context definitions for compat 32-bit programs: */
   5
   6 #include <linux/types.h>
   7
   8 #include <asm/sigcontext.h>
   9
  10 /* 10-byte legacy floating point register: */
  11 struct _fpreg {
  12         __u16                           significand[4];
  13         __u16                           exponent;
  14 };
  15
  16 /* 16-byte floating point register: */
  17 struct _fpxreg {
  18         __u16                           significand[4];
  19         __u16                           exponent;
  20         __u16                           padding[3];
  21 };
  22
  23 /* 16-byte XMM vector register: */
  24 struct _xmmreg {
  25         __u32   element[4];
  26 };
  27
  28 #define X86_FXSR_MAGIC                  0x0000
  29
  30 /* FXSAVE frame: FSAVE frame with extensions */
  31 struct _fpstate_ia32 {
  32         /* Regular FPU environment: */
  33         __u32                           cw;
  34         __u32                           sw;
  35         __u32                           tag;            /* Not compatible with the 64-bit frame */
  36         __u32                           ipoff;
  37         __u32                           cssel;
  38         __u32                           dataoff;
  39         __u32                           datasel;
  40         struct _fpreg                   _st[8];
  41         __u16                           status;
  42         __u16                           magic;          /* 0xffff: regular FPU data only */
  43                                                         /* 0x0000: FXSR data */
  44
  45         /* Extended FXSR FPU environment: */
  46         __u32                           _fxsr_env[6];
  47         __u32                           mxcsr;
  48         __u32                           reserved;
  49         struct _fpxreg                  _fxsr_st[8];
  50         struct _xmmreg                  _xmm[8];        /* The first  8 XMM registers */
  51         __u32                           padding[44];    /* The second 8 XMM registers plus padding */
  52         union {
  53                 __u32                   padding2[12];
  54                 /* Might encode xstate extensions, see asm/sigcontext.h: */
  55                 struct _fpx_sw_bytes    sw_reserved;
  56         };
  57 };
  58
  59 /* 32-bit compat sigcontext: */
  60 struct sigcontext_ia32 {
  61        __u16                            gs, __gsh;
  62        __u16                            fs, __fsh;
  63        __u16                            es, __esh;
  64        __u16                            ds, __dsh;
  65        __u32                            di;
  66        __u32                            si;
  67        __u32                            bp;
  68        __u32                            sp;
  69        __u32                            bx;
  70        __u32                            dx;
  71        __u32                            cx;
  72        __u32                            ax;
  73        __u32                            trapno;
  74        __u32                            err;
  75        __u32                            ip;
  76        __u16                            cs, __csh;
  77        __u32                            flags;
  78        __u32                            sp_at_signal;
  79        __u16                            ss, __ssh;
  80        __u32                            fpstate;        /* Pointer to 'struct _fpstate_ia32' */
  81        __u32                            oldmask;
  82        __u32                            cr2;
  83 };
  84
  85 #endif /* _ASM_X86_SIGCONTEXT32_H */