/* syscall error handlers

   Copyright (C) 2011-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   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>

#if IS_IN (libc)

# define errno __libc_errno

#endif

ENTRY (__syscall_error)

	mv t0, ra

	/* Fall through to __syscall_set_errno.  */

END (__syscall_error)

/* Non-standard calling convention: argument in a0, return address in t0,

   and clobber only t1.  */

ENTRY (__syscall_set_errno)

	/* We got here because a0 < 0, but only codes in the range [-4095, -1]

	  represent errors.  Otherwise, just return the result normally.  */

	li t1, -4096

	bleu a0, t1, 1f

	neg a0, a0

#if RTLD_PRIVATE_ERRNO

	sw a0, rtld_errno, t1

#elif defined(__PIC__)

	la.tls.ie t1, errno

	add t1, t1, tp

	sw a0, 0(t1)

#else

	lui t1, %tprel_hi(errno)

	add t1, t1, tp, %tprel_add(errno)

	sw a0, %tprel_lo(errno)(t1)

#endif

	li a0, -1

1:	jr t0

END (__syscall_set_errno)