/*      $NetBSD: rumpuser_int.h,v 1.11 2022/04/19 20:32:17 rillig Exp $ */

/*
 * Copyright (c) 2008 Antti Kantee.  All Rights Reserved.
 *
 * 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 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.
 */

#include <stdlib.h>

#include <rump/rumpuser.h>

#define seterror(value) do { if (error) *error = value;} while (0)

extern struct rumpuser_hyperup rumpuser__hyp;

static inline void
rumpkern_unsched(int *nlocks, void *interlock)
{

        rumpuser__hyp.hyp_backend_unschedule(0, nlocks, interlock);
}

static inline void
rumpkern_sched(int nlocks, void *interlock)
{

        rumpuser__hyp.hyp_backend_schedule(nlocks, interlock);
}

#define KLOCK_WRAP(a)                                                   \
do {                                                                    \
        int nlocks;                                                     \
        rumpkern_unsched(&nlocks, NULL);                                \
        a;                                                              \
        rumpkern_sched(nlocks, NULL);                                   \
} while (0)

#define DOCALL(rvtype, call)                                            \
{                                                                       \
        rvtype rv;                                                      \
        rv = call;                                                      \
        if (rv == -1)                                                   \
                seterror(errno);                                        \
        else                                                            \
                seterror(0);                                            \
        return rv;                                                      \
}

#define DOCALL_KLOCK(rvtype, call)                                      \
{                                                                       \
        rvtype rv;                                                      \
        int nlocks;                                                     \
        rumpkern_unsched(&nlocks, NULL);                                \
        rv = call;                                                      \
        rumpkern_sched(nlocks, NULL);                                   \
        if (rv == -1)                                                   \
                seterror(errno);                                        \
        else                                                            \
                seterror(0);                                            \
        return rv;                                                      \
}

void rumpuser__thrinit(void);

#define NOFAIL(a) do {if (!(a)) abort();} while (0)

#define NOFAIL_ERRNO(a)                                                 \
do {                                                                    \
        int fail_rv = (a);                                              \
        if (fail_rv) {                                                  \
                printf("panic: rumpuser fatal failure %d (%s)\n",       \
                    fail_rv, strerror(fail_rv));                        \
                abort();                                                \
        }                                                               \
} while (0)

int  rumpuser__sig_rump2host(int);
int  rumpuser__errtrans(int);
#ifdef __NetBSD__
#define ET(_v_) return (_v_);
#else
#define ET(_v_) return (_v_) ? rumpuser__errtrans(_v_) : 0;
#endif

int rumpuser__random_init(void);