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

#include "SYS.h"

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

        .hidden _C_LABEL(__curbrk)
        .hidden _C_LABEL(__minbrk)
        .globl  _C_LABEL(__curbrk)
        .globl  _C_LABEL(__minbrk)
        .globl  _C_LABEL(_end)

#ifdef WEAK_ALIAS
WEAK_ALIAS(brk, _brk)
#endif
        .data
        .p2align 2
_C_LABEL(__minbrk):
        .long   _C_LABEL(_end)
_C_LABEL(__curbrk):
        .long   _C_LABEL(_end)

        .text
ENTRY(_brk)
#ifdef __PIC__
        l.or    r8,r9,r0
        PIC_GOTSETUP(r7)
        l.or    r9,r8,r0
        l.movhi r6,gotoffhi(_C_LABEL(__minbrk))
        l.ori   r6,r6,gotofflo(_C_LABEL(__minbrk))
        l.add   r6,r6,r7
#else
        l.movhi r6,hi(_C_LABEL(__minbrk))
        l.ori   r6,r6,lo(_C_LABEL(__minbrk))
#endif
        l.lwz   r5,0(r6)                # r5 = __minbrk
        l.sfgts r5,r3                   # if (__minbrk <= r3)
        l.cmov  r5,r5,r3                # choose larger
        l.or    r3,r5,r0                # new break value
        _DOSYSCALL(break)               # assume, that r5 is kept
        l.bf    _C_LABEL(__cerror)
        l.nop
        l.sw    __SIZEOF_POINTER__(r6),r5
        l.xor   r11, r11, r11           # return 0
        l.jr    lr                      # return 0
        l.nop
END(_brk)