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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 * The Original Code is the Netscape Portable Runtime (NSPR).
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998-2000
 * the Initial Developer. All Rights Reserved.
 * Contributor(s):
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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 * decision by deleting the provisions above and replace them with the notice
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 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 * ***** END LICENSE BLOCK ***** */

#ifndef nspr_nextstep_defs_h___
#define nspr_nextstep_defs_h___

#include "prthread.h"

#include <bsd/libc.h>
#include <bsd/syscall.h>

/*    syscall() is not declared in NEXTSTEP's syscall.h ...
extern int syscall(int number, ...);

 * Internal configuration macros

#define PR_LINKER_ARCH  "nextstep"
#if defined(__sparc__)
#define _PR_SI_ARCHITECTURE "sparc"
#elif defined(__m68k__)
#define _PR_SI_ARCHITECTURE "m68k"
#elif defined(__i386__)
#define _PR_SI_ARCHITECTURE "x86"
error Unknown NEXTSTEP architecture
#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



#define HAVE_DLL

#define USE_SETJMP

#ifndef _PR_PTHREADS

#include <setjmp.h>

#define PR_CONTEXT_TYPE jmp_buf

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

/* balazs.pataki@sztaki.hu:
** __sparc__ is checked
** __m68k__ is checked
** __i386__ is a guess (one of the two defines should work)
#if defined(__sparc__)
#define _MD_GET_SP(_th)       (_th)->md.context[2]
#elif defined(__m68k__)
#define _MD_GET_SP(_th)       (_th)->md.context[2]
#elif defined(__i386__)
/* One of this two must be OK ... try using sc_onstack
#define _MD_GET_SP(_th)    (((struct sigcontext *) (_th)->md.context)->sc_onstack)
//#define _MD_GET_SP(_th)           (_th)->md.context[0].sc_esp
error Unknown NEXTSTEP architecture


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

#define _MD_SWITCH_CONTEXT(_thread)  \
    if (!setjmp(CONTEXT(_thread))) {  \
      (_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);  \
    longjmp(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

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],
      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()

extern PRStatus _MD_InitializeThread(PRThread *thread);

#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)

extern PRStatus _MD_CREATE_THREAD(
    PRThread *thread,
    void (*start) (void *),
    PRThreadPriority priority,
    PRThreadScope scope,
    PRThreadState state,
    PRUint32 stackSize);
extern void _MD_SET_PRIORITY(struct _MDThread *thread, PRUintn newPri);
extern PRStatus _MD_WAIT(PRThread *, PRIntervalTime timeout);
extern PRStatus _MD_WAKEUP_WAITER(PRThread *);
extern void _MD_YIELD(void);

#endif /* ! _PR_PTHREADS */

extern void _MD_EarlyInit(void);
extern PRIntervalTime _PR_UNIX_GetInterval(void);
extern PRIntervalTime _PR_UNIX_TicksPerSecond(void);

#define _MD_EARLY_INIT                  _MD_EarlyInit
#define _MD_FINAL_INIT              _PR_UnixInit
#define _MD_GET_INTERVAL                  _PR_UNIX_GetInterval
#define _MD_INTERVAL_PER_SEC              _PR_UNIX_TicksPerSecond

 * 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)

/* For writev() */
#include <sys/uio.h>

/* signal.h */
/*    balazs.pataki@sztaki.hu: this is stolen from sunos4.h. The things is that
**    NEXTSTEP doesn't support these flags for `struct sigaction's sa_flags, so
**    I have to fake them ...
#define SA_RESTART 0

/* mmap */
/*    balazs.pataki@sztaki.hu: NEXTSTEP doesn't have mmap, at least not 
**    publically. We have sys/mman.h, but it doesn't declare mmap(), and
**    PROT_NONE is also missing. syscall.h has entries for mmap, munmap, and 
**    mprotect so I wrap these in nextstep.c as  mmap(), munmap() and mprotect()
**    and pray for it to work.
caddr_t mmap(caddr_t addr, size_t len, int prot, int flags,
          int fildes, off_t off);
int munmap(caddr_t addr, size_t len);
int mprotect(caddr_t addr, size_t len, int prot);

/*    my_mmap() is implemented in nextstep.c and is based on map_fd() of mach.
caddr_t my_mmap(caddr_t addr, size_t len, int prot, int flags,
          int fildes, off_t off);
int my_munmap(caddr_t addr, size_t len);

/*    string.h
/* balazs.pataki@sztaki.hu: this is missing so implemenetd in nextstep.c ...
char *strdup(const char *s1);

/* unistd.h
/*    balazs.pataki@sztaki.hu: these functions are hidden, though correctly 
**    implemented in NEXTSTEP. Here I give the declaration for them to be used
**    by prmalloc.c, and I have a wrapped syscall() version of them in nextstep.c
int brk(void *endds);
void *sbrk(int incr);

#endif /* nspr_nextstep_defs_h___ */

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