newlib/libc/errno/errno.c


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/* The errno variable is stored in the reentrancy structure.  This
   function returns its address for use by the macro errno defined in
   errno.h.  */

#include <errno.h>
#include <reent.h>

#ifdef _REENT_THREAD_LOCAL
_Thread_local int _tls_errno;
#else /* !_REENT_THREAD_LOCAL */

#ifndef _REENT_ONLY

int *
__errno ()
{
  return &_REENT_ERRNO(_REENT);
}

#endif

#endif /* _REENT_THREAD_LOCAL */