sysdeps/unix/bsd/bsd4.4/kfreebsd/x86_64/bits/mcontext.h

   1 /* Machine-dependent processor state structure for FreeBSD.
   2    Copyright (C) 2002 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.  x86_64 version.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #if !defined _SYS_UCONTEXT_H
  21 # error "Never use <bits/mcontext.h> directly; include <sys/ucontext.h> instead."
  22 #endif
  23
  24 /*-
  25  * Copyright (c) 2003 Peter Wemm
  26  * Copyright (c) 1999 Marcel Moolenaar
  27  * All rights reserved.
  28  *
  29  * Redistribution and use in source and binary forms, with or without
  30  * modification, are permitted provided that the following conditions
  31  * are met:
  32  * 1. Redistributions of source code must retain the above copyright
  33  *    notice, this list of conditions and the following disclaimer
  34  *    in this position and unchanged.
  35  * 2. Redistributions in binary form must reproduce the above copyright
  36  *    notice, this list of conditions and the following disclaimer in the
  37  *    documentation and/or other materials provided with the distribution.
  38  * 3. The name of the author may not be used to endorse or promote products
  39  *    derived from this software without specific prior written permission.
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  42  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  43  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  44  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  45  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  46  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  47  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  48  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  49  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  50  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  51  *
  52  * based on $FreeBSD: src/sys/amd64/include/ucontext.h,v 1.18 2003/11/08 04:39:22 peter Exp $
  53  */
  54
  55 #ifdef __i386__
  56
  57 /* Whole processor state.  */
  58 typedef struct
  59   {
  60     /*
  61      * The first 20 fields must match the definition of
  62      * sigcontext. So that we can support sigcontext
  63      * and ucontext_t at the same time.
  64      */
  65
  66     int mc_onstack;             /* Nonzero if running on sigstack.  */
  67
  68     /* Segment registers.  */
  69     int mc_gs;
  70     int mc_fs;
  71     int mc_es;
  72     int mc_ds;
  73
  74     /* "General" registers.  These members are in the order that the i386
  75        `pusha' and `popa' instructions use (`popa' ignores %esp).  */
  76     int mc_edi;
  77     int mc_esi;
  78     int mc_ebp;
  79     int mc_isp;                 /* Not used; sc_esp is used instead.  */
  80     int mc_ebx;
  81     int mc_edx;
  82     int mc_ecx;
  83     int mc_eax;
  84
  85     int mc_trapno;
  86     int mc_err;
  87
  88     int mc_eip;                 /* Instruction pointer.  */
  89     int mc_cs;                  /* Code segment register.  */
  90
  91     int mc_efl;                 /* Processor flags.  */
  92
  93     int mc_esp;                 /* This stack pointer is used.  */
  94     int mc_ss;                  /* Stack segment register.  */
  95
  96     int mc_len;                 /* sizeof(mcontext_t) */
  97 #define _MC_FPFMT_NODEV         0x10000 /* device not present or configured */
  98 #define _MC_FPFMT_387           0x10001
  99 #define _MC_FPFMT_XMM           0x10002
 100     int mc_fpformat;
 101 #define _MC_FPOWNED_NONE        0x20000 /* FP state not used */
 102 #define _MC_FPOWNED_FPU         0x20001 /* FP state came from FPU */
 103 #define _MC_FPOWNED_PCB         0x20002 /* FP state came from PCB */
 104     int mc_ownedfp;
 105     int mc_spare1[1];           /* align next field to 16 bytes */
 106     /*
 107      * See <machine/npx.h> for the internals of mc_fpstate[].
 108      */
 109     int mc_fpstate[128] __attribute__((aligned(16)));
 110     int mc_spare2[8];
 111   } mcontext_t;
 112
 113 #else
 114
 115 /* Whole processor state.  */
 116 typedef struct
 117   {
 118     /*
 119      * The first 20 fields must match the definition of
 120      * sigcontext. So that we can support sigcontext
 121      * and ucontext_t at the same time.
 122      */
 123     long mc_onstack;            /* XXX - sigcontext compat. */
 124     long mc_rdi;                        /* machine state (struct trapframe) */
 125     long mc_rsi;
 126     long mc_rdx;
 127     long mc_rcx;
 128     long mc_r8;
 129     long mc_r9;
 130     long mc_rax;
 131     long mc_rbx;
 132     long mc_rbp;
 133     long mc_r10;
 134     long mc_r11;
 135     long mc_r12;
 136     long mc_r13;
 137     long mc_r14;
 138     long mc_r15;
 139     long mc_trapno;
 140     long mc_addr;
 141     long mc_flags;
 142     long mc_err;
 143     long mc_rip;
 144     long mc_cs;
 145     long mc_rflags;
 146     long mc_rsp;
 147     long mc_ss;
 148
 149     long mc_len;                        /* sizeof(mcontext_t) */
 150 #define _MC_FPFMT_NODEV         0x10000 /* device not present or configured */
 151 #define _MC_FPFMT_XMM           0x10002
 152     long mc_fpformat;
 153 #define _MC_FPOWNED_NONE        0x20000 /* FP state not used */
 154 #define _MC_FPOWNED_FPU         0x20001 /* FP state came from FPU */
 155 #define _MC_FPOWNED_PCB         0x20002 /* FP state came from PCB */
 156     long mc_ownedfp;
 157      /*
 158       * See <machine/fpu.h> for the internals of mc_fpstate[].
 159       */
 160     long mc_fpstate[64] __attribute__((aligned(16)));
 161     long mc_spare[8];
 162 } mcontext_t;
 163
 164 #endif
 165
 166 /* Traditional BSD names for some members.  */
 167 #define mc_eflags       mc_efl