/*      $OpenBSD: SYS.h,v 1.3 2023/12/11 22:29:24 deraadt Exp $ */

/*
 * Copyright (c) 1998-2002 Opsycon AB, Sweden.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 *
 */

#include <sys/syscall.h>
#include <machine/asm.h>

#define PINSYSCALL(sysno, label)                                \
        .pushsection .openbsd.syscalls,"",@progbits             ;\
        .p2align 2                                              ;\
        .long label                                             ;\
        .long sysno                                             ;\
        .popsection

#define DL_SYSCALL(c)                                           \
NLEAF(_dl_##c,0)                                                \
        li      v0,SYS_##c;                                     \
99:     syscall;                                                \
        PINSYSCALL(SYS_##c, 99b);                               \
        bnez    a3, 1f;                                         \
        j       ra;                                             \
1:      ;                                                       \
        subu    v0, zero, v0;                                   \
        j       ra;                                             \
END(_dl_##c)