common/sparc/brk.s

!
! CDDL HEADER START
!
! The contents of this file are subject to the terms of the
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! (the "License").  You may not use this file except in compliance
! with the License.
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! or http://www.opensolaris.org/os/licensing.
! See the License for the specific language governing permissions
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! When distributing Covered Code, include this CDDL HEADER in each
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!   "%Z%%M% %I% %E% SMI"
!   Copyright (c) 1986 by Sun Microsystems, Inc.
!
    .seg    ".text"

#include "SYS.h"
#define ALIGNSIZE   8

#define SYS_brk     17

    .global .curbrk
    .type   .curbrk,#object
    .size   .curbrk,4

    ENTRY(brk)
    add %o0, (ALIGNSIZE-1), %o0 ! round up new break to a
    andn    %o0, (ALIGNSIZE-1), %o0 ! multiple of alignsize
    mov %o0, %o2        ! save new break
    mov SYS_brk, %g1
    t   8
    CERROR(o5)
#ifdef PIC
    PIC_SETUP(o5)
    ld  [%o5 + .curbrk], %g1
    st  %o2, [%g1]
#else
    sethi   %hi(.curbrk), %g1   ! save new break
    st  %o2, [%g1 + %lo(.curbrk)]
#endif
    RET
    SET_SIZE(brk)