/* Copyright (C) 1999-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by David Mosberger-Tang <davidm@hpl.hp.com>.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <sysdep.h>

#include <features.h>

#include <tls.h>

ENTRY(__syscall_error)

#if RTLD_PRIVATE_ERRNO

	/*

	 * Note that the gp has to be set properly for this to work.

	 * As long as all syscalls are in the same load unit

	 * (executable or shared library) as this routine, we should

	 * be fine.  Otherwise, we would have to first load the global

	 * pointer register from __gp.

	 */

	addl	r2=@gprel(rtld_errno),gp

	;;

	st4	[r2]=r8

	mov	r8=-1

#else

# if IS_IN (libc)

#  define SYSCALL_ERROR_ERRNO __libc_errno

# else

#  define SYSCALL_ERROR_ERRNO errno

# endif

	addl	r2=@ltoff(@tprel(SYSCALL_ERROR_ERRNO)), gp;;

	ld8	r2=[r2]

	mov	r3=r8;;

	mov	r8=-1

	add	r2=r2,r13;;

	st4	[r2]=r3

#endif

	ret			// ret is #define'd in syscall.h!

END(__syscall_error)

ENTRY(__ia64_syscall)

	mov r15=r37		/* syscall number */

	break __BREAK_SYSCALL

	cmp.eq p6,p0=-1,r10	/* r10 = -1 on error */

(p6)	br.cond.spnt.few __syscall_error

	ret

PSEUDO_END(__ia64_syscall)