x86/include/signal.h

	signal.h revision 199767f8919635c4928607450d9e0abb932109ce
/*-
 * 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.
 * 4. 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.
 *
 *  @(#)signal.h    8.1 (Berkeley) 6/11/93
 * $FreeBSD$
 */

#ifndef _X86_SIGNAL_H
#define _X86_SIGNAL_H 1

/*
 * Machine-dependent signal definitions
 */

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

#if __BSD_VISIBLE
#include <machine/trap.h>   /* codes for SIGILL, SIGFPE */
#endif

#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