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/11.2/sys/x86/include/ucontext.h 295561 2016-02-12 07:38:19Z kib $
   30  */
   31 
   32 #ifndef _X86_UCONTEXT_H_
   33 #define _X86_UCONTEXT_H_
   34 
   35 #ifdef __i386__
   36 /* Keep _MC_* values similar to amd64 */
   37 #define _MC_HASSEGS     0x1
   38 #define _MC_HASBASES    0x2
   39 #define _MC_HASFPXSTATE 0x4
   40 #define _MC_FLAG_MASK   (_MC_HASSEGS | _MC_HASBASES | _MC_HASFPXSTATE)
   41 
   42 typedef struct __mcontext {
   43         /*
   44          * The definition of mcontext_t must match the layout of
   45          * struct sigcontext after the sc_mask member.  This is so
   46          * that we can support sigcontext and ucontext_t at the same
   47          * time.
   48          */
   49         __register_t    mc_onstack;     /* XXX - sigcontext compat. */
   50         __register_t    mc_gs;          /* machine state (struct trapframe) */
   51         __register_t    mc_fs;
   52         __register_t    mc_es;
   53         __register_t    mc_ds;
   54         __register_t    mc_edi;
   55         __register_t    mc_esi;
   56         __register_t    mc_ebp;
   57         __register_t    mc_isp;
   58         __register_t    mc_ebx;
   59         __register_t    mc_edx;
   60         __register_t    mc_ecx;
   61         __register_t    mc_eax;
   62         __register_t    mc_trapno;
   63         __register_t    mc_err;
   64         __register_t    mc_eip;
   65         __register_t    mc_cs;
   66         __register_t    mc_eflags;
   67         __register_t    mc_esp;
   68         __register_t    mc_ss;
   69 
   70         int     mc_len;                 /* sizeof(mcontext_t) */
   71 #define _MC_FPFMT_NODEV         0x10000 /* device not present or configured */
   72 #define _MC_FPFMT_387           0x10001
   73 #define _MC_FPFMT_XMM           0x10002
   74         int     mc_fpformat;
   75 #define _MC_FPOWNED_NONE        0x20000 /* FP state not used */
   76 #define _MC_FPOWNED_FPU         0x20001 /* FP state came from FPU */
   77 #define _MC_FPOWNED_PCB         0x20002 /* FP state came from PCB */
   78         int     mc_ownedfp;
   79         __register_t mc_flags;
   80         /*
   81          * See <machine/npx.h> for the internals of mc_fpstate[].
   82          */
   83         int     mc_fpstate[128] __aligned(16);
   84 
   85         __register_t mc_fsbase;
   86         __register_t mc_gsbase;
   87 
   88         __register_t mc_xfpustate;
   89         __register_t mc_xfpustate_len;
   90 
   91         int     mc_spare2[4];
   92 } mcontext_t;
   93 #endif /* __i386__ */
   94 
   95 #ifdef __amd64__
   96 /*
   97  * mc_trapno bits. Shall be in sync with TF_XXX.
   98  */
   99 #define _MC_HASSEGS     0x1
  100 #define _MC_HASBASES    0x2
  101 #define _MC_HASFPXSTATE 0x4
  102 #define _MC_FLAG_MASK   (_MC_HASSEGS | _MC_HASBASES | _MC_HASFPXSTATE)
  103 
  104 typedef struct __mcontext {
  105         /*
  106          * The definition of mcontext_t must match the layout of
  107          * struct sigcontext after the sc_mask member.  This is so
  108          * that we can support sigcontext and ucontext_t at the same
  109          * time.
  110          */
  111         __register_t    mc_onstack;     /* XXX - sigcontext compat. */
  112         __register_t    mc_rdi;         /* machine state (struct trapframe) */
  113         __register_t    mc_rsi;
  114         __register_t    mc_rdx;
  115         __register_t    mc_rcx;
  116         __register_t    mc_r8;
  117         __register_t    mc_r9;
  118         __register_t    mc_rax;
  119         __register_t    mc_rbx;
  120         __register_t    mc_rbp;
  121         __register_t    mc_r10;
  122         __register_t    mc_r11;
  123         __register_t    mc_r12;
  124         __register_t    mc_r13;
  125         __register_t    mc_r14;
  126         __register_t    mc_r15;
  127         __uint32_t      mc_trapno;
  128         __uint16_t      mc_fs;
  129         __uint16_t      mc_gs;
  130         __register_t    mc_addr;
  131         __uint32_t      mc_flags;
  132         __uint16_t      mc_es;
  133         __uint16_t      mc_ds;
  134         __register_t    mc_err;
  135         __register_t    mc_rip;
  136         __register_t    mc_cs;
  137         __register_t    mc_rflags;
  138         __register_t    mc_rsp;
  139         __register_t    mc_ss;
  140 
  141         long    mc_len;                 /* sizeof(mcontext_t) */
  142 
  143 #define _MC_FPFMT_NODEV         0x10000 /* device not present or configured */
  144 #define _MC_FPFMT_XMM           0x10002
  145         long    mc_fpformat;
  146 #define _MC_FPOWNED_NONE        0x20000 /* FP state not used */
  147 #define _MC_FPOWNED_FPU         0x20001 /* FP state came from FPU */
  148 #define _MC_FPOWNED_PCB         0x20002 /* FP state came from PCB */
  149         long    mc_ownedfp;
  150         /*
  151          * See <machine/fpu.h> for the internals of mc_fpstate[].
  152          */
  153         long    mc_fpstate[64] __aligned(16);
  154 
  155         __register_t    mc_fsbase;
  156         __register_t    mc_gsbase;
  157 
  158         __register_t    mc_xfpustate;
  159         __register_t    mc_xfpustate_len;
  160 
  161         long    mc_spare[4];
  162 } mcontext_t;
  163 #endif /* __amd64__ */
  164 
  165 #ifdef __LINT__
  166 typedef struct __mcontext {
  167 } mcontext_t;
  168 #endif /* __LINT__ */
  169 
  170 #endif /* !_X86_UCONTEXT_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/x86/include/ucontext.h

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sys/x86/include/ucontext.h