include/asm-x86/sigcontext.h

   1 #ifndef _ASM_X86_SIGCONTEXT_H
   2 #define _ASM_X86_SIGCONTEXT_H
   3
   4 #include <linux/compiler.h>
   5 #include <asm/types.h>
   6
   7 #ifdef __i386__
   8 /*
   9  * As documented in the iBCS2 standard..
  10  *
  11  * The first part of "struct _fpstate" is just the normal i387
  12  * hardware setup, the extra "status" word is used to save the
  13  * coprocessor status word before entering the handler.
  14  *
  15  * Pentium III FXSR, SSE support
  16  *      Gareth Hughes <gareth@valinux.com>, May 2000
  17  *
  18  * The FPU state data structure has had to grow to accommodate the
  19  * extended FPU state required by the Streaming SIMD Extensions.
  20  * There is no documented standard to accomplish this at the moment.
  21  */
  22 struct _fpreg {
  23         unsigned short significand[4];
  24         unsigned short exponent;
  25 };
  26
  27 struct _fpxreg {
  28         unsigned short significand[4];
  29         unsigned short exponent;
  30         unsigned short padding[3];
  31 };
  32
  33 struct _xmmreg {
  34         unsigned long element[4];
  35 };
  36
  37 struct _fpstate {
  38         /* Regular FPU environment */
  39         unsigned long   cw;
  40         unsigned long   sw;
  41         unsigned long   tag;
  42         unsigned long   ipoff;
  43         unsigned long   cssel;
  44         unsigned long   dataoff;
  45         unsigned long   datasel;
  46         struct _fpreg   _st[8];
  47         unsigned short  status;
  48         unsigned short  magic;          /* 0xffff = regular FPU data only */
  49
  50         /* FXSR FPU environment */
  51         unsigned long   _fxsr_env[6];   /* FXSR FPU env is ignored */
  52         unsigned long   mxcsr;
  53         unsigned long   reserved;
  54         struct _fpxreg  _fxsr_st[8];    /* FXSR FPU reg data is ignored */
  55         struct _xmmreg  _xmm[8];
  56         unsigned long   padding[56];
  57 };
  58
  59 #define X86_FXSR_MAGIC          0x0000
  60
  61 #ifdef __KERNEL__
  62 struct sigcontext {
  63         unsigned short gs, __gsh;
  64         unsigned short fs, __fsh;
  65         unsigned short es, __esh;
  66         unsigned short ds, __dsh;
  67         unsigned long di;
  68         unsigned long si;
  69         unsigned long bp;
  70         unsigned long sp;
  71         unsigned long bx;
  72         unsigned long dx;
  73         unsigned long cx;
  74         unsigned long ax;
  75         unsigned long trapno;
  76         unsigned long err;
  77         unsigned long ip;
  78         unsigned short cs, __csh;
  79         unsigned long flags;
  80         unsigned long sp_at_signal;
  81         unsigned short ss, __ssh;
  82         struct _fpstate __user * fpstate;
  83         unsigned long oldmask;
  84         unsigned long cr2;
  85 };
  86 #else /* __KERNEL__ */
  87 /*
  88  * User-space might still rely on the old definition:
  89  */
  90 struct sigcontext {
  91         unsigned short gs, __gsh;
  92         unsigned short fs, __fsh;
  93         unsigned short es, __esh;
  94         unsigned short ds, __dsh;
  95         unsigned long edi;
  96         unsigned long esi;
  97         unsigned long ebp;
  98         unsigned long esp;
  99         unsigned long ebx;
 100         unsigned long edx;
 101         unsigned long ecx;
 102         unsigned long eax;
 103         unsigned long trapno;
 104         unsigned long err;
 105         unsigned long eip;
 106         unsigned short cs, __csh;
 107         unsigned long eflags;
 108         unsigned long esp_at_signal;
 109         unsigned short ss, __ssh;
 110         struct _fpstate __user * fpstate;
 111         unsigned long oldmask;
 112         unsigned long cr2;
 113 };
 114 #endif /* !__KERNEL__ */
 115
 116 #else /* __i386__ */
 117
 118 /* FXSAVE frame */
 119 /* Note: reserved1/2 may someday contain valuable data. Always save/restore
 120    them when you change signal frames. */
 121 struct _fpstate {
 122         __u16   cwd;
 123         __u16   swd;
 124         __u16   twd;    /* Note this is not the same as the 32bit/x87/FSAVE twd */
 125         __u16   fop;
 126         __u64   rip;
 127         __u64   rdp;
 128         __u32   mxcsr;
 129         __u32   mxcsr_mask;
 130         __u32   st_space[32];   /* 8*16 bytes for each FP-reg */
 131         __u32   xmm_space[64];  /* 16*16 bytes for each XMM-reg  */
 132         __u32   reserved2[24];
 133 };
 134
 135 #ifdef __KERNEL__
 136 struct sigcontext {
 137         unsigned long r8;
 138         unsigned long r9;
 139         unsigned long r10;
 140         unsigned long r11;
 141         unsigned long r12;
 142         unsigned long r13;
 143         unsigned long r14;
 144         unsigned long r15;
 145         unsigned long di;
 146         unsigned long si;
 147         unsigned long bp;
 148         unsigned long bx;
 149         unsigned long dx;
 150         unsigned long ax;
 151         unsigned long cx;
 152         unsigned long sp;
 153         unsigned long ip;
 154         unsigned long flags;
 155         unsigned short cs;
 156         unsigned short gs;
 157         unsigned short fs;
 158         unsigned short __pad0;
 159         unsigned long err;
 160         unsigned long trapno;
 161         unsigned long oldmask;
 162         unsigned long cr2;
 163         struct _fpstate __user *fpstate;        /* zero when no FPU context */
 164         unsigned long reserved1[8];
 165 };
 166 #else /* __KERNEL__ */
 167 /*
 168  * User-space might still rely on the old definition:
 169  */
 170 struct sigcontext {
 171         unsigned long r8;
 172         unsigned long r9;
 173         unsigned long r10;
 174         unsigned long r11;
 175         unsigned long r12;
 176         unsigned long r13;
 177         unsigned long r14;
 178         unsigned long r15;
 179         unsigned long rdi;
 180         unsigned long rsi;
 181         unsigned long rbp;
 182         unsigned long rbx;
 183         unsigned long rdx;
 184         unsigned long rax;
 185         unsigned long rcx;
 186         unsigned long rsp;
 187         unsigned long rip;
 188         unsigned long eflags;           /* RFLAGS */
 189         unsigned short cs;
 190         unsigned short gs;
 191         unsigned short fs;
 192         unsigned short __pad0;
 193         unsigned long err;
 194         unsigned long trapno;
 195         unsigned long oldmask;
 196         unsigned long cr2;
 197         struct _fpstate __user *fpstate;        /* zero when no FPU context */
 198         unsigned long reserved1[8];
 199 };
 200 #endif /* !__KERNEL__ */
 201
 202 #endif /* !__i386__ */
 203
 204 #endif