sysdeps/unix/sysv/linux/x86_64/bits/sigcontext.h

   1 /* Copyright (C) 2002 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #ifndef _BITS_SIGCONTEXT_H
  20 #define _BITS_SIGCONTEXT_H  1
  21
  22 #if !defined _SIGNAL_H && !defined _SYS_UCONTEXT_H
  23 # error "Never use <bits/sigcontext.h> directly; include <signal.h> instead."
  24 #endif
  25
  26 #include <bits/wordsize.h>
  27
  28 struct _fpreg
  29 {
  30   unsigned short significand[4];
  31   unsigned short exponent;
  32 };
  33
  34 struct _fpxreg
  35 {
  36   unsigned short significand[4];
  37   unsigned short exponent;
  38   unsigned short padding[3];
  39 };
  40
  41 struct _xmmreg
  42 {
  43   __uint32_t    element[4];
  44 };
  45
  46
  47
  48 #if __WORDSIZE == 32
  49
  50 struct _fpstate
  51 {
  52   /* Regular FPU environment.  */
  53   __uint32_t    cw;
  54   __uint32_t            sw;
  55   __uint32_t            tag;
  56   __uint32_t            ipoff;
  57   __uint32_t            cssel;
  58   __uint32_t            dataoff;
  59   __uint32_t            datasel;
  60   struct _fpreg _st[8];
  61   unsigned short status;
  62   unsigned short magic;
  63
  64   /* FXSR FPU environment.  */
  65   __uint32_t            _fxsr_env[6];
  66   __uint32_t            mxcsr;
  67   __uint32_t            reserved;
  68   struct _fpxreg        _fxsr_st[8];
  69   struct _xmmreg        _xmm[8];
  70   __uint32_t            padding[56];
  71 };
  72
  73 #ifndef sigcontext_struct
  74 /* Kernel headers before 2.1.1 define a struct sigcontext_struct, but
  75    we need sigcontext.  Some packages have come to rely on
  76    sigcontext_struct being defined on 32-bit x86, so define this for
  77    their benefit.  */
  78 # define sigcontext_struct sigcontext
  79 #endif
  80
  81 struct sigcontext
  82 {
  83   unsigned short gs, __gsh;
  84   unsigned short fs, __fsh;
  85   unsigned short es, __esh;
  86   unsigned short ds, __dsh;
  87   unsigned long edi;
  88   unsigned long esi;
  89   unsigned long ebp;
  90   unsigned long esp;
  91   unsigned long ebx;
  92   unsigned long edx;
  93   unsigned long ecx;
  94   unsigned long eax;
  95   unsigned long trapno;
  96   unsigned long err;
  97   unsigned long eip;
  98   unsigned short cs, __csh;
  99   unsigned long eflags;
 100   unsigned long esp_at_signal;
 101   unsigned short ss, __ssh;
 102   struct _fpstate * fpstate;
 103   unsigned long oldmask;
 104   unsigned long cr2;
 105 };
 106
 107 #else /* __WORDSIZE == 64 */
 108
 109 struct _fpstate
 110 {
 111   /* FPU environment matching the 64-bit FXSAVE layout.  */
 112   __uint16_t            cwd;
 113   __uint16_t            swd;
 114   __uint16_t            ftw;
 115   __uint16_t            fop;
 116   __uint64_t            rip;
 117   __uint64_t            rdp;
 118   __uint32_t            mxcsr;
 119   __uint32_t            mxcr_mask;
 120   struct _fpxreg        _st[8];
 121   struct _xmmreg        _xmm[16];
 122   __uint32_t            padding[24];
 123 };
 124
 125 struct sigcontext
 126 {
 127   unsigned long r8;
 128   unsigned long r9;
 129   unsigned long r10;
 130   unsigned long r11;
 131   unsigned long r12;
 132   unsigned long r13;
 133   unsigned long r14;
 134   unsigned long r15;
 135   unsigned long rdi;
 136   unsigned long rsi;
 137   unsigned long rbp;
 138   unsigned long rbx;
 139   unsigned long rdx;
 140   unsigned long rax;
 141   unsigned long rcx;
 142   unsigned long rsp;
 143   unsigned long rip;
 144   unsigned long eflags;
 145   unsigned short cs;
 146   unsigned short gs;
 147   unsigned short fs;
 148   unsigned short __pad0;
 149   unsigned long err;
 150   unsigned long trapno;
 151   unsigned long oldmask;
 152   unsigned long cr2;
 153   struct _fpstate * fpstate;
 154   unsigned long __reserved1 [8];
 155 };
 156
 157 #endif /* __WORDSIZE == 64 */
 158
 159 #endif /* _BITS_SIGCONTEXT_H */