56 lines
1.5 KiB
ArmAsm
56 lines
1.5 KiB
ArmAsm
/* Copyright (C) 1993, 1995 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <sysdep.h>
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#ifndef SYS_brk
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#define SYS_brk 17
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#endif
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#ifndef C_SYMBOL_NAME
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#define C_SYMBOL_NAME(name) _##name
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#endif
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.data
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.global C_SYMBOL_NAME(__curbrk)
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C_LABEL(__curbrk)
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#ifdef HAVE_GNU_LD
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.long C_SYMBOL_NAME(_end)
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#else
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.long C_SYMBOL_NAME(end)
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#endif
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.text
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ENTRY (__brk)
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add %o0, 7, %o0
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andn %o0, 7, %o0
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mov SYS_brk, %g1
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mov %o0, %o1 /* Save rounded value. */
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ta %g0
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bcs error
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sethi %hi(C_SYMBOL_NAME(__curbrk)), %g1
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st %o1, [%g1 + %lo(C_SYMBOL_NAME(__curbrk))]
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ret
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error: sethi %hi(C_SYMBOL_NAME(errno)), %g1
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st %o0, [%g1 + %lo(C_SYMBOL_NAME(errno))]
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sub %g0, 1, %o0
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retl
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nop /* Fill the delay slot. */
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weak_alias (__brk, brk)
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