sys/x86/include/signal.h

root/sys/x86/include/signal.h
/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (c) 1986, 1989, 1991, 1993
 *      The Regents of the University of California.  All rights reserved.
 * Copyright (c) 2003 Peter Wemm.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef _X86_SIGNAL_H
#define _X86_SIGNAL_H 1

/*
 * Machine-dependent signal definitions
 */

#include <sys/cdefs.h>
#include <sys/_sigset.h>

#ifdef __i386__
typedef int sig_atomic_t;

#if __BSD_VISIBLE
struct sigcontext {
        struct __sigset sc_mask;        /* signal mask to restore */
        int     sc_onstack;             /* sigstack state to restore */
        int     sc_gs;                  /* machine state (struct trapframe) */
        int     sc_fs;
        int     sc_es;
        int     sc_ds;
        int     sc_edi;
        int     sc_esi;
        int     sc_ebp;
        int     sc_isp;
        int     sc_ebx;
        int     sc_edx;
        int     sc_ecx;
        int     sc_eax;
        int     sc_trapno;
        int     sc_err;
        int     sc_eip;
        int     sc_cs;
        int     sc_efl;
        int     sc_esp;
        int     sc_ss;
        int     sc_len;                 /* sizeof(mcontext_t) */
        /*
         * See <machine/ucontext.h> and <machine/npx.h> for
         * the following fields.
         */
        int     sc_fpformat;
        int     sc_ownedfp;
        int     sc_flags;
        int     sc_fpstate[128] __aligned(16);

        int     sc_fsbase;
        int     sc_gsbase;

        int     sc_xfpustate;
        int     sc_xfpustate_len;

        int     sc_spare2[4];
};

#define sc_sp           sc_esp
#define sc_fp           sc_ebp
#define sc_pc           sc_eip
#define sc_ps           sc_efl
#define sc_eflags       sc_efl

#endif /* __BSD_VISIBLE */
#endif /* __i386__ */

#ifdef __amd64__
typedef long sig_atomic_t;

#if __BSD_VISIBLE
/*
 * Information pushed on stack when a signal is delivered.
 * This is used by the kernel to restore state following
 * execution of the signal handler.  It is also made available
 * to the handler to allow it to restore state properly if
 * a non-standard exit is performed.
 *
 * The sequence of the fields/registers after sc_mask in struct
 * sigcontext must match those in mcontext_t and struct trapframe.
 */
struct sigcontext {
        struct __sigset sc_mask;        /* signal mask to restore */
        long    sc_onstack;             /* sigstack state to restore */
        long    sc_rdi;         /* machine state (struct trapframe) */
        long    sc_rsi;
        long    sc_rdx;
        long    sc_rcx;
        long    sc_r8;
        long    sc_r9;
        long    sc_rax;
        long    sc_rbx;
        long    sc_rbp;
        long    sc_r10;
        long    sc_r11;
        long    sc_r12;
        long    sc_r13;
        long    sc_r14;
        long    sc_r15;
        int     sc_trapno;
        short   sc_fs;
        short   sc_gs;
        long    sc_addr;
        int     sc_flags;
        short   sc_es;
        short   sc_ds;
        long    sc_err;
        long    sc_rip;
        long    sc_cs;
        long    sc_rflags;
        long    sc_rsp;
        long    sc_ss;
        long    sc_len;                 /* sizeof(mcontext_t) */
        /*
         * See <machine/ucontext.h> and <machine/fpu.h> for the following
         * fields.
         */
        long    sc_fpformat;
        long    sc_ownedfp;
        long    sc_fpstate[64] __aligned(16);

        long    sc_fsbase;
        long    sc_gsbase;

        long    sc_xfpustate;
        long    sc_xfpustate_len;

        long    sc_spare[4];
};
#endif /* __BSD_VISIBLE */
#endif /* __amd64__ */

#endif
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