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/* Copyright (C) 2000 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, write to the Free

   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA

   02111-1307 USA.  */

#define _ERRNO_H        1

#include 

#include 

#include 

#if defined __UCLIBC_HAS_LFS__ && defined __NR_mmap2

        /* The mmap2 system call takes six arguments, all in registers.  */

        .text

        .global mmap64;

        .type mmap64,%function

        .align 4;

mmap64:

        stmfd   sp!, {r4, r5, lr}

        ldr     r5, [sp, $16]

        ldr     r4, [sp, $12]

        movs    ip, r5, lsl $20         @ check that offset is page-aligned

        bne     .Linval

        ldr     ip, [sp, $20]

        mov     r5, r5, lsr $12

        orr     r5, r5, ip, lsl $20     @ compose page offset

        movs    ip, ip, lsr $12

        bne     .Linval                 @ check for overflow

        mov     ip, r0

        swi     __NR_mmap2

        cmn     r0, $4096

        ldmccfd sp!, {r4, r5, pc}

        cmn     r0, $ENOSYS

        ldmnefd sp!, {r4, r5, lr}

        bne     __syscall_error (PLT)

        /* The current kernel does not support mmap2.  Fall back to plain

           mmap if the offset is small enough.  */

        ldr     r5, [sp, $20]

        mov     r0, ip                  @ first arg was clobbered

        teq     r5, $0

        ldmeqfd sp!, {r4, r5, lr}

        beq     mmap (PLT)

.Linval:

        mov     r0, $-EINVAL

        ldmfd   sp!, {r4, r5, lr}

        b       __syscall_error (PLT)

__syscall_error:

        /* Looks like the syscall choked -- set errno */

        ldr  r3, .L4

        /* Calculate the - of the syscall result, in case we need it */

        rsb  r2, r0, $0

        /* errno = -result */

        str  r2, [r9,r3]

        /* return -1 */

        mvn  r0, $0

        mov  pc, lr

.size mmap64,.-mmap64;

.L4:  .word errno

#endif