The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/compat/ia32/ia32_signal.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-3-Clause
    3  *
    4  * Copyright (c) 1999 Marcel Moolenaar
    5  * Copyright (c) 2003 Peter Wemm
    6  * All rights reserved.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer 
   13  *    in this position and unchanged.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  * 3. The name of the author may not be used to endorse or promote products
   18  *    derived from this software without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   30  *
   31  * $FreeBSD$
   32  */
   33 
   34 #ifndef _COMPAT_IA32_IA32_SIGNAL_H
   35 #define _COMPAT_IA32_IA32_SIGNAL_H
   36 
   37 #include <compat/freebsd32/freebsd32_signal.h>
   38 
   39 #define _MC_IA32_HASSEGS        0x1
   40 #define _MC_IA32_HASBASES       0x2
   41 #define _MC_IA32_HASFPXSTATE    0x4
   42 #define _MC_IA32_FLAG_MASK      \
   43     (_MC_IA32_HASSEGS | _MC_IA32_HASBASES | _MC_IA32_HASFPXSTATE)
   44 
   45 struct ia32_mcontext {
   46         u_int32_t       mc_onstack;             /* XXX - sigcontext compat. */
   47         u_int32_t       mc_gs;                  /* machine state (struct trapframe) */
   48         u_int32_t       mc_fs;
   49         u_int32_t       mc_es;
   50         u_int32_t       mc_ds;
   51         u_int32_t       mc_edi;
   52         u_int32_t       mc_esi;
   53         u_int32_t       mc_ebp;
   54         u_int32_t       mc_isp;
   55         u_int32_t       mc_ebx;
   56         u_int32_t       mc_edx;
   57         u_int32_t       mc_ecx;
   58         u_int32_t       mc_eax;
   59         u_int32_t       mc_trapno;
   60         u_int32_t       mc_err;
   61         u_int32_t       mc_eip;
   62         u_int32_t       mc_cs;
   63         u_int32_t       mc_eflags;
   64         u_int32_t       mc_esp;
   65         u_int32_t       mc_ss;
   66         u_int32_t       mc_len;                 /* sizeof(struct ia32_mcontext) */
   67         /* We use the same values for fpformat and ownedfp */
   68         u_int32_t       mc_fpformat;
   69         u_int32_t       mc_ownedfp;
   70         u_int32_t       mc_flags;
   71         /*
   72          * See <i386/include/npx.h> for the internals of mc_fpstate[].
   73          */
   74         u_int32_t       mc_fpstate[128] __aligned(16);
   75         u_int32_t       mc_fsbase;
   76         u_int32_t       mc_gsbase;
   77         u_int32_t       mc_xfpustate;
   78         u_int32_t       mc_xfpustate_len;
   79         u_int32_t       mc_spare2[4];
   80 };
   81 
   82 struct ia32_ucontext {
   83         sigset_t                uc_sigmask;
   84         struct ia32_mcontext    uc_mcontext;
   85         u_int32_t               uc_link;
   86         struct sigaltstack32    uc_stack;
   87         u_int32_t               uc_flags;
   88         u_int32_t               __spare__[4];
   89 };
   90 
   91 #if defined(COMPAT_FREEBSD4)
   92 struct ia32_mcontext4 {
   93         u_int32_t       mc_onstack;             /* XXX - sigcontext compat. */
   94         u_int32_t       mc_gs;                  /* machine state (struct trapframe) */
   95         u_int32_t       mc_fs;
   96         u_int32_t       mc_es;
   97         u_int32_t       mc_ds;
   98         u_int32_t       mc_edi;
   99         u_int32_t       mc_esi;
  100         u_int32_t       mc_ebp;
  101         u_int32_t       mc_isp;
  102         u_int32_t       mc_ebx;
  103         u_int32_t       mc_edx;
  104         u_int32_t       mc_ecx;
  105         u_int32_t       mc_eax;
  106         u_int32_t       mc_trapno;
  107         u_int32_t       mc_err;
  108         u_int32_t       mc_eip;
  109         u_int32_t       mc_cs;
  110         u_int32_t       mc_eflags;
  111         u_int32_t       mc_esp; 
  112         u_int32_t       mc_ss;
  113         u_int32_t       mc_fpregs[28];
  114         u_int32_t       __spare__[17];
  115 };
  116 
  117 struct ia32_ucontext4 {
  118         sigset_t                uc_sigmask;
  119         struct ia32_mcontext4   uc_mcontext;
  120         u_int32_t               uc_link;
  121         struct sigaltstack32    uc_stack;
  122         u_int32_t               __spare__[8];
  123 };
  124 #endif
  125 
  126 #ifdef COMPAT_43
  127 struct ia32_sigcontext3 {
  128         u_int32_t       sc_onstack;
  129         u_int32_t       sc_mask;
  130         u_int32_t       sc_esp; 
  131         u_int32_t       sc_ebp;
  132         u_int32_t       sc_isp;
  133         u_int32_t       sc_eip;
  134         u_int32_t       sc_eflags;
  135         u_int32_t       sc_es;
  136         u_int32_t       sc_ds;
  137         u_int32_t       sc_cs;
  138         u_int32_t       sc_ss;
  139         u_int32_t       sc_edi;
  140         u_int32_t       sc_esi;
  141         u_int32_t       sc_ebx;
  142         u_int32_t       sc_edx;
  143         u_int32_t       sc_ecx;
  144         u_int32_t       sc_eax;
  145         u_int32_t       sc_gs;
  146         u_int32_t       sc_fs;
  147         u_int32_t       sc_trapno;
  148         u_int32_t       sc_err;
  149 };
  150 #endif
  151 
  152 /*
  153  * Signal frames, arguments passed to application signal handlers.
  154  */
  155 
  156 #ifdef COMPAT_FREEBSD4
  157 struct ia32_sigframe4 {
  158         u_int32_t               sf_signum;
  159         u_int32_t               sf_siginfo;     /* code or pointer to sf_si */
  160         u_int32_t               sf_ucontext;    /* points to sf_uc */
  161         u_int32_t               sf_addr;        /* undocumented 4th arg */
  162         u_int32_t               sf_ah;          /* action/handler pointer */
  163         struct ia32_ucontext4   sf_uc;          /* = *sf_ucontext */
  164         struct siginfo32        sf_si;          /* = *sf_siginfo (SA_SIGINFO case) */
  165 };
  166 #endif
  167 
  168 struct ia32_sigframe {
  169         u_int32_t               sf_signum;
  170         u_int32_t               sf_siginfo;     /* code or pointer to sf_si */
  171         u_int32_t               sf_ucontext;    /* points to sf_uc */
  172         u_int32_t               sf_addr;        /* undocumented 4th arg */
  173         u_int32_t               sf_ah;          /* action/handler pointer */
  174         /* Beware, hole due to ucontext being 16 byte aligned! */
  175         struct ia32_ucontext    sf_uc;          /* = *sf_ucontext */
  176         struct siginfo32        sf_si;          /* = *sf_siginfo (SA_SIGINFO case) */
  177 };
  178 
  179 #ifdef COMPAT_43
  180 struct ia32_siginfo3 {
  181         struct ia32_sigcontext3 si_sc;
  182         int                     si_signo;
  183         int                     si_code;
  184         union sigval32          si_value;
  185 };
  186 struct ia32_sigframe3 {
  187         int                     sf_signum;
  188         u_int32_t               sf_arg2;        /* int or siginfo_t */
  189         u_int32_t               sf_scp;
  190         u_int32_t               sf_addr;
  191         u_int32_t               sf_ah;          /* action/handler pointer */
  192         struct ia32_siginfo3    sf_siginfo;
  193 };
  194 #endif
  195 
  196 struct ksiginfo;
  197 struct image_params;
  198 void ia32_sendsig(sig_t, struct ksiginfo *, sigset_t *);
  199 void ia32_setregs(struct thread *td, struct image_params *imgp,
  200     uintptr_t stack);
  201 int setup_lcall_gate(void);
  202 
  203 #endif

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