2013-12-06 12:04:52 +01:00
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/* $NetBSD: crt0.S,v 1.2 2013/06/25 16:47:47 matt Exp $ */
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2011-02-14 20:36:03 +01:00
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/*-
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2013-12-06 12:04:52 +01:00
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* Copyright (c) 2013 The NetBSD Foundation, Inc.
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2011-02-14 20:36:03 +01:00
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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2013-12-06 12:04:52 +01:00
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* by Matt Thomas of 3am Software Foundry.
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2011-02-14 20:36:03 +01:00
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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2013-12-06 12:04:52 +01:00
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#include <mips/asm.h>
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2011-02-14 20:36:03 +01:00
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2013-12-06 12:04:52 +01:00
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RCSID("$NetBSD: crt0.S,v 1.2 2013/06/25 16:47:47 matt Exp $")
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2011-02-14 20:36:03 +01:00
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2013-12-06 12:04:52 +01:00
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STRONG_ALIAS(_start,__start)
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2011-02-14 20:36:03 +01:00
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2013-12-06 12:04:52 +01:00
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/*
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* Assumes kernel (or ld_elf.so) passes the following parameters to
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* user-space in registers:
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*
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* a0 stack pointer (0 if setregs didn't fill this in)
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* a1 cleanup
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* a2 Obj_Entry
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* a3 ps_strings
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*
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* XXX Does this violate the ABI?
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* as well as the usual registers (pc, sp, and t9 == pc for ABI).
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*/
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NESTED_NOPROFILE(__start, CALLFRAME_SIZ, ra)
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SETUP_GP
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SETUP_GP64(t3, __start)
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move a0, a1 /* cleanup */
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move a1, a2 /* Obj_Entry */
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move a2, a3 /* ps_strings */
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j _C_LABEL(___start)
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END(__start)
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