sys/cpu/i386/include/ucontext.h

   1 /*-
   2  * Copyright (c) 1999 Marcel Moolenaar
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer
  10  *    in this position and unchanged.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  *
  28  * $FreeBSD: src/sys/i386/include/ucontext.h,v 1.4 1999/10/11 20:33:09 luoqi Exp $
  29  * $DragonFly: src/sys/cpu/i386/include/ucontext.h,v 1.5 2007/01/13 21:15:55 dillon Exp $
  30  */
  31
  32 #ifndef _CPU_UCONTEXT_H_
  33 #define _CPU_UCONTEXT_H_
  34
  35 typedef struct __mcontext {
  36         /*
  37          * The first 20 fields must match the definition of
  38          * sigcontext. So that we can support sigcontext
  39          * and ucontext_t at the same time.
  40          */
  41         int     mc_onstack;             /* XXX - sigcontext compat. */
  42         int     mc_gs;
  43         int     mc_fs;
  44         int     mc_es;
  45         int     mc_ds;
  46         int     mc_edi;
  47         int     mc_esi;
  48         int     mc_ebp;
  49         int     mc_isp;
  50         int     mc_ebx;
  51         int     mc_edx;
  52         int     mc_ecx;
  53         int     mc_eax;
  54         int     mc_xflags;
  55         int     mc_trapno;
  56         int     mc_err;
  57         int     mc_eip;
  58         int     mc_cs;
  59         int     mc_eflags;
  60         int     mc_esp;                 /* machine state */
  61         int     mc_ss;
  62
  63         int     mc_len;
  64         int     mc_fpformat;
  65         int     mc_ownedfp;
  66
  67         /* 16 byte aligned */
  68
  69         int     mc_fpregs[128];         /* full fp state */
  70         int     __spare__[16];
  71 } mcontext_t;
  72
  73 #define _MC_FPFMT_NODEV         0x10000 /* device not present or configured */
  74 #define _MC_FPFMT_387           0x10001
  75 #define _MC_FPFMT_XMM           0x10002
  76
  77 #define _MC_FPOWNED_NONE        0x20000 /* FP state not used */
  78 #define _MC_FPOWNED_FPU         0x20001 /* FP state came from FPU */
  79 #define _MC_FPOWNED_PCB         0x20002 /* FP state came from PCB */
  80
  81 #endif /* !_CPU_UCONTEXT_H_ */