/*      $NetBSD: sbrk.S,v 1.1 2014/09/03 19:34:26 matt Exp $    */

#include "SYS.h"

#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: sbrk.S,v 1.1 2014/09/03 19:34:26 matt Exp $")
#endif /* LIBC_SCCS && !lint */

        .hidden _C_LABEL(__curbrk)
        .globl  _C_LABEL(__curbrk)

#ifdef WEAK_ALIAS
WEAK_ALIAS(sbrk, _sbrk)
#endif

ENTRY(_sbrk)
#ifdef __PIC__
        l.or    r8,r9,r0
        PIC_GOTSETUP(r6)
        l.or    r9,r8,r0
        l.movhi r5,gotoffhi(_C_LABEL(__curbrk))
        l.ori   r5,r5,gotofflo(_C_LABEL(__curbrk))
        l.add   r5,r5,r6
#else
        l.movhi r5,hi(_C_LABEL(__curbrk))
        l.ori   r5,r5,lo(_C_LABEL(__curbrk))    # r5 = old break;
#endif
        l.lwz   r6,0(r5)                        # r6 = old break, r5 = &curbrk
        l.add   r3,r3,r6
        _DOSYSCALL(break)                       # break(new_break)
        l.bf    _C_LABEL(__cerror)
        l.nop
        l.sw    0(r5),r3                        # record new break
        l.or    r11,r6,r0                       # set return value
        l.jr    lr
        l.nop
END(_sbrk)