/* 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/. */

#include "primpl.h"

#include <signal.h>
#include <poll.h>
#include <sys/syscall.h>

void _MD_EarlyInit(void) {
  /*
   * Ignore FPE because coercion of a NaN to an int causes SIGFPE
   * to be raised.
   */
  struct sigaction act;

  act.sa_handler = SIG_IGN;
  sigemptyset(&act.sa_mask);
  act.sa_flags = SA_RESTART;
  sigaction(SIGFPE, &act, 0);
}

PRWord* _MD_HomeGCRegisters(PRThread* t, int isCurrent, int* np) {
#ifndef _PR_PTHREADS
  if (isCurrent) {
    (void)sigsetjmp(CONTEXT(t), 1);
  }
  *np = sizeof(CONTEXT(t)) / sizeof(PRWord);
  return (PRWord*)CONTEXT(t);
#else
  *np = 0;
  return NULL;
#endif
}

#ifndef _PR_PTHREADS
void _MD_SET_PRIORITY(_MDThread* thread, PRUintn newPri) { return; }

PRStatus _MD_InitializeThread(PRThread* thread) { return PR_SUCCESS; }

PRStatus _MD_WAIT(PRThread* thread, PRIntervalTime ticks) {
  PR_ASSERT(!(thread->flags & _PR_GLOBAL_SCOPE));
  _PR_MD_SWITCH_CONTEXT(thread);
  return PR_SUCCESS;
}

PRStatus _MD_WAKEUP_WAITER(PRThread* thread) {
  if (thread) {
    PR_ASSERT(!(thread->flags & _PR_GLOBAL_SCOPE));
  }
  return PR_SUCCESS;
}

/* These functions should not be called for NetBSD */
void _MD_YIELD(void) {
  PR_NOT_REACHED("_MD_YIELD should not be called for NetBSD.");
}

PRStatus _MD_CREATE_THREAD(PRThread* thread, void (*start)(void*),
                           PRThreadPriority priority, PRThreadScope scope,
                           PRThreadState state, PRUint32 stackSize) {
  PR_NOT_REACHED("_MD_CREATE_THREAD should not be called for NetBSD.");
  return PR_FAILURE;
}
#endif /* ! _PR_PTHREADS */