51 lines
2.0 KiB
ArmAsm
51 lines
2.0 KiB
ArmAsm
/* $NetBSD: srt0.S,v 1.1 2002/12/28 23:57:39 reinoud Exp $ */
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/*-
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* Copyright (c) 2001 Ben Harris
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Modified by Reinoud Zandijk to get the program high water mark into the
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* HIMEM variable as normally seen in RISC OS. This is the max address+1 of
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* the current `WIMPSlot'. It used to be a #define. The HIMEM var needs to be
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* initialised though so it doesn't get zero'd when the BSS is later cleared.
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* (see srt1.c)
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*/
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#include <machine/asm.h>
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#include <riscoscalls.h>
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ENTRY(_start)
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swi OS_GetEnv
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ldr r6, Lhimem
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str r1, [r6]
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mov sp, r1
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mov fp, #0
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bl __start
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Lhimem:
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.word HIMEM
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