/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef nspr_openbsd_defs_h___
#define nspr_openbsd_defs_h___

#include <sys/syscall.h>

#define PR_LINKER_ARCH  "openbsd"
#define _PR_SI_SYSNAME  "OPENBSD"
#if defined(__i386__)
#define _PR_SI_ARCHITECTURE "x86"
#elif defined(__alpha__)
#define _PR_SI_ARCHITECTURE "alpha"
#elif defined(__amd64__)
#define _PR_SI_ARCHITECTURE "amd64"
#elif defined(__powerpc64__)
#define _PR_SI_ARCHITECTURE "powerpc64"
#elif defined(__powerpc__)
#define _PR_SI_ARCHITECTURE "powerpc"
#elif defined(__aarch64__)
#define _PR_SI_ARCHITECTURE "aarch64"
#elif defined(__sparc__)
#define _PR_SI_ARCHITECTURE "sparc"
#elif defined(__arm__)
#define _PR_SI_ARCHITECTURE "arm"
#endif

#define PR_DLL_SUFFIX       ".so"

#define _PR_VMBASE              0x30000000
#define _PR_STACK_VMBASE    0x50000000
#define _MD_DEFAULT_STACK_SIZE  65536L
#define _MD_MMAP_FLAGS          MAP_PRIVATE

#undef  HAVE_STACK_GROWING_UP
#define HAVE_DLL
#define USE_DLFCN
#define _PR_HAVE_SOCKADDR_LEN
#define _PR_HAVE_LARGE_OFF_T
#define _PR_STAT_HAS_ST_ATIMESPEC
#define _PR_POLL_AVAILABLE
#define _PR_USE_POLL
#define _PR_HAVE_SYSV_SEMAPHORES
#define PR_HAVE_SYSV_NAMED_SHARED_MEMORY

#define _PR_INET6
#define _PR_HAVE_INET_NTOP
#define _PR_HAVE_GETHOSTBYNAME2
#define _PR_HAVE_GETADDRINFO
#define _PR_INET6_PROBE

#define USE_SETJMP

#ifndef _PR_PTHREADS
#include <setjmp.h>

#define PR_CONTEXT_TYPE sigjmp_buf

#define CONTEXT(_th) ((_th)->md.context)

#if defined(__i386__) || defined(__sparc__) || defined(__m68k__)
#define JB_SP_INDEX 2
#elif defined(__powerpc__)
#define JB_SP_INDEX 1
#elif defined(__alpha__)
#define JB_SP_INDEX 34
#elif defined(__amd64__)
#define JB_SP_INDEX 6
#elif defined(__arm__)
#define JB_SP_INDEX 23
#else
#error "Need to define SP index in jmp_buf here"
#endif
#define _MD_GET_SP(_th)    (_th)->md.context[JB_SP_INDEX]

#define PR_NUM_GCREGS   _JBLEN

/*
** Initialize a thread context to run "_main()" when started
*/
#define _MD_INIT_CONTEXT(_thread, _sp, _main, status)  \
{  \
    *status = PR_TRUE;  \
    if (sigsetjmp(CONTEXT(_thread), 1)) {  \
        _main();  \
    }  \
    _MD_GET_SP(_thread) = (unsigned char*) ((_sp) - 64); \
}

#define _MD_SWITCH_CONTEXT(_thread)  \
    if (!sigsetjmp(CONTEXT(_thread), 1)) {  \
        (_thread)->md.errcode = errno;  \
        _PR_Schedule();  \
    }

/*
** Restore a thread context, saved by _MD_SWITCH_CONTEXT
*/
#define _MD_RESTORE_CONTEXT(_thread) \
{   \
    errno = (_thread)->md.errcode;  \
    _MD_SET_CURRENT_THREAD(_thread);  \
    siglongjmp(CONTEXT(_thread), 1);  \
}

/* Machine-dependent (MD) data structures */

struct _MDThread {
    PR_CONTEXT_TYPE context;
    int id;
    int errcode;
};

struct _MDThreadStack {
    PRInt8 notused;
};

struct _MDLock {
    PRInt8 notused;
};

struct _MDSemaphore {
    PRInt8 notused;
};

struct _MDCVar {
    PRInt8 notused;
};

struct _MDSegment {
    PRInt8 notused;
};

/*
 * md-specific cpu structure field
 */
#define _PR_MD_MAX_OSFD FD_SETSIZE

struct _MDCPU_Unix {
    PRCList ioQ;
    PRUint32 ioq_timeout;
    PRInt32 ioq_max_osfd;
    PRInt32 ioq_osfd_cnt;
#ifndef _PR_USE_POLL
    fd_set fd_read_set, fd_write_set, fd_exception_set;
    PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
            fd_exception_cnt[_PR_MD_MAX_OSFD];
#else
    struct pollfd *ioq_pollfds;
    int ioq_pollfds_size;
#endif  /* _PR_USE_POLL */
};

#define _PR_IOQ(_cpu)           ((_cpu)->md.md_unix.ioQ)
#define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
#define _PR_FD_READ_SET(_cpu)       ((_cpu)->md.md_unix.fd_read_set)
#define _PR_FD_READ_CNT(_cpu)       ((_cpu)->md.md_unix.fd_read_cnt)
#define _PR_FD_WRITE_SET(_cpu)      ((_cpu)->md.md_unix.fd_write_set)
#define _PR_FD_WRITE_CNT(_cpu)      ((_cpu)->md.md_unix.fd_write_cnt)
#define _PR_FD_EXCEPTION_SET(_cpu)  ((_cpu)->md.md_unix.fd_exception_set)
#define _PR_FD_EXCEPTION_CNT(_cpu)  ((_cpu)->md.md_unix.fd_exception_cnt)
#define _PR_IOQ_TIMEOUT(_cpu)       ((_cpu)->md.md_unix.ioq_timeout)
#define _PR_IOQ_MAX_OSFD(_cpu)      ((_cpu)->md.md_unix.ioq_max_osfd)
#define _PR_IOQ_OSFD_CNT(_cpu)      ((_cpu)->md.md_unix.ioq_osfd_cnt)
#define _PR_IOQ_POLLFDS(_cpu)       ((_cpu)->md.md_unix.ioq_pollfds)
#define _PR_IOQ_POLLFDS_SIZE(_cpu)  ((_cpu)->md.md_unix.ioq_pollfds_size)

#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)  32

struct _MDCPU {
    struct _MDCPU_Unix md_unix;
};

#define _MD_INIT_LOCKS()
#define _MD_NEW_LOCK(lock) PR_SUCCESS
#define _MD_FREE_LOCK(lock)
#define _MD_LOCK(lock)
#define _MD_UNLOCK(lock)
#define _MD_INIT_IO()
#define _MD_IOQ_LOCK()
#define _MD_IOQ_UNLOCK()

#define _MD_INIT_RUNNING_CPU(cpu)       _MD_unix_init_running_cpu(cpu)
#define _MD_INIT_THREAD                 _MD_InitializeThread
#define _MD_EXIT_THREAD(thread)
#define _MD_SUSPEND_THREAD(thread)      _MD_suspend_thread
#define _MD_RESUME_THREAD(thread)       _MD_resume_thread
#define _MD_CLEAN_THREAD(_thread)

#endif /* ! _PR_PTHREADS */

extern void _MD_EarlyInit(void);

#define _MD_EARLY_INIT                  _MD_EarlyInit
#define _MD_FINAL_INIT          _PR_UnixInit
#define _PR_HAVE_CLOCK_MONOTONIC

/*
 * We wrapped the select() call.  _MD_SELECT refers to the built-in,
 * unwrapped version.
 */
#define _MD_SELECT(nfds,r,w,e,tv) syscall(SYS_select,nfds,r,w,e,tv)
#include <poll.h>
#define _MD_POLL(fds,nfds,timeout) syscall(SYS_poll,fds,nfds,timeout)

#if OpenBSD1_3 == 1L
typedef unsigned int nfds_t;
#endif

#endif /* nspr_openbsd_defs_h___ */