ucontext.h

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    1 /*-
    2  * Copyright (c) 2003 Peter Wemm
    3  * Copyright (c) 1999 Marcel Moolenaar
    4  * All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer 
   11  *    in this position and unchanged.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  * 3. The name of the author may not be used to endorse or promote products
   16  *    derived from this software without specific prior written permission.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   28  *
   29  * $FreeBSD: releng/9.0/sys/amd64/include/ucontext.h 190616 2009-04-01 12:44:17Z kib $
   30  */
   31 
   32 #ifndef _MACHINE_UCONTEXT_H_
   33 #define _MACHINE_UCONTEXT_H_
   34 
   35 /*
   36  * mc_trapno bits. Shall be in sync with TF_XXX.
   37  */
   38 #define _MC_HASSEGS     0x1
   39 #define _MC_HASBASES    0x2
   40 #define _MC_FLAG_MASK   (_MC_HASSEGS | _MC_HASBASES)
   41 
   42 typedef struct __mcontext {
   43         /*
   44          * The first 24 fields must match the definition of
   45          * sigcontext. So that we can support sigcontext
   46          * and ucontext_t at the same time.
   47          */
   48         __register_t    mc_onstack;             /* XXX - sigcontext compat. */
   49         __register_t    mc_rdi;                 /* machine state (struct trapframe) */
   50         __register_t    mc_rsi;
   51         __register_t    mc_rdx;
   52         __register_t    mc_rcx;
   53         __register_t    mc_r8;
   54         __register_t    mc_r9;
   55         __register_t    mc_rax;
   56         __register_t    mc_rbx;
   57         __register_t    mc_rbp;
   58         __register_t    mc_r10;
   59         __register_t    mc_r11;
   60         __register_t    mc_r12;
   61         __register_t    mc_r13;
   62         __register_t    mc_r14;
   63         __register_t    mc_r15;
   64         __uint32_t      mc_trapno;
   65         __uint16_t      mc_fs;
   66         __uint16_t      mc_gs;
   67         __register_t    mc_addr;
   68         __uint32_t      mc_flags;
   69         __uint16_t      mc_es;
   70         __uint16_t      mc_ds;
   71         __register_t    mc_err;
   72         __register_t    mc_rip;
   73         __register_t    mc_cs;
   74         __register_t    mc_rflags;
   75         __register_t    mc_rsp;
   76         __register_t    mc_ss;
   77 
   78         long    mc_len;                 /* sizeof(mcontext_t) */
   79 
   80 #define _MC_FPFMT_NODEV         0x10000 /* device not present or configured */
   81 #define _MC_FPFMT_XMM           0x10002
   82         long    mc_fpformat;
   83 #define _MC_FPOWNED_NONE        0x20000 /* FP state not used */
   84 #define _MC_FPOWNED_FPU         0x20001 /* FP state came from FPU */
   85 #define _MC_FPOWNED_PCB         0x20002 /* FP state came from PCB */
   86         long    mc_ownedfp;
   87         /*
   88          * See <machine/fpu.h> for the internals of mc_fpstate[].
   89          */
   90         long    mc_fpstate[64] __aligned(16);
   91 
   92         __register_t    mc_fsbase;
   93         __register_t    mc_gsbase;
   94 
   95         long    mc_spare[6];
   96 } mcontext_t;
   97 
   98 #endif /* !_MACHINE_UCONTEXT_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/amd64/include/ucontext.h

FreeBSD/Linux Kernel Cross Reference
sys/amd64/include/ucontext.h