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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) 1998, 2000, 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 <sys/syscall.h>
#include <sysdep.h>
.text
.globl __mmap
ENTRY (__mmap)
#ifdef PIC
.pic
#endif
// reserve space for r0, r1
#if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP)
#else
addi $sp, $sp, -8
#endif
// change to units of the system page size
srli $r5, $r5, 0xc
syscall SYS_ify(mmap2)
#if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP)
#else
addi $sp, $sp, 8
#endif
/* r0 is < -4096 if there was an error. */
bgez $r0, 1f
sltsi $r1,$r0,-4096
beqz $r1,2f
1:
ret
2:
#ifdef PIC
#ifdef __NDS32_N1213_43U1H__
! save lp
addi $r2, $lp, 0
! set r1 as gp
jal 1b
sethi $r1, hi20(_GLOBAL_OFFSET_TABLE_)
ori $r1, $r1, lo12(_GLOBAL_OFFSET_TABLE_+4)
add $r1, $lp, $r1
! restore lp
addi $lp, $r2, 0
! r15=SYSCALL_ERROR@PLT
sethi $r15, hi20(SYSCALL_ERROR@PLT)
ori $r15, $r15, lo12(SYSCALL_ERROR@PLT)
add $r15, $r15, $r1
! jump to SYSCALL_ERROR
jr $r15
#else
! set r1 as gp
mfusr $r15, $PC
sethi $r1, hi20(_GLOBAL_OFFSET_TABLE_+4)
ori $r1, $r1, lo12(_GLOBAL_OFFSET_TABLE_+8)
add $r1, $r1, $r15
! r15=SYSCALL_ERROR@PLT
sethi $r15, hi20(SYSCALL_ERROR@PLT)
ori $r15, $r15, lo12(SYSCALL_ERROR@PLT)
add $r15, $r15, $r1
! jump to SYSCALL_ERROR
jr $r15
#endif
#else
j SYSCALL_ERROR
#endif
ret
PSEUDO_END (__mmap)
weak_alias (__mmap, mmap)
libc_hidden_def(mmap)
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