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/*
* Copyright (C) 2016 Andes Technology, Inc.
* Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
*/
/* Copyright (C) 1991-2003 Free Software Foundation, Inc.
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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <sysdep.h>
#define _ERRNO_H
#include <bits/errno.h>
.text
.globl C_SYMBOL_NAME(errno)
.globl __syscall_error
ENTRY (__syscall_error)
#ifdef OLD_ABI
subri $r5, $r5, #0
#else
subri $r0, $r0, #0
#endif
#define __syscall_error __syscall_error_1
#undef syscall_error
#ifdef NO_UNDERSCORES
__syscall_error:
#else
syscall_error:
#endif
#ifdef PIC
/* set GP register */
pushm $gp, $lp
#ifdef __NDS32_N1213_43U1H__
jal 2f
sethi $gp, hi20(_GLOBAL_OFFSET_TABLE_)
ori $gp, $gp, lo12(_GLOBAL_OFFSET_TABLE_+4)
add $gp, $gp, $lp
#else
mfusr $r15, $PC
sethi $gp, hi20(_GLOBAL_OFFSET_TABLE_+4)
ori $gp, $gp, lo12(_GLOBAL_OFFSET_TABLE_+8)
add $gp, $gp, $r15
#endif
#endif
#if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN
/* We translate the system's EWOULDBLOCK error into EAGAIN.
The GNU C library always defines EWOULDBLOCK==EAGAIN.
EWOULDBLOCK_sys is the original number. */
push $t0
li $t0, EWOULDBLOCK_sys
bne $r0, $t0, 1f
pop $t0
li $r0, EAGAIN
1:
#endif
#ifdef _LIBC_REENTRANT
push $lp
push $r0
#if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP)
#else
addi $sp, $sp, -24
#endif
#ifdef PIC
bal C_SYMBOL_NAME(__errno_location@PLT)
#else
bal C_SYMBOL_NAME(__errno_location)
#endif
#if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP)
#else
addi $sp, $sp, 24
#endif
pop $r1
swi $r1, [$r0]
li $r0, -1
pop $lp
#ifdef PIC
/* restore GP register */
popm $gp, $lp
#endif
2:
ret
#else
#ifndef PIC
l.w $r1, .L1
swi $r0, [$r1]
li $r0, -1
ret
.L1: .long C_SYMBOL_NAME(errno)
#else
s.w $r0, errno@GOTOFF
li $r0, -1
/* restore GP register */
popm $gp, $lp
2:
ret
#endif
#endif
#undef __syscall_error
END (__syscall_error)
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