LXR linux/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 */
  22struct _fpreg {
  23        unsigned short significand[4];
  24        unsigned short exponent;
  25};
  26
  27struct _fpxreg {
  28        unsigned short significand[4];
  29        unsigned short exponent;
  30        unsigned short padding[3];
  31};
  32
  33struct _xmmreg {
  34        unsigned long element[4];
  35};
  36
  37struct _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__
  62struct 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 */
  90struct 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. */
 121struct _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__
 136struct 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 */
 170struct 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
 205