1*84d9c625SLionel Sambuc/* $NetBSD: crt0.S,v 1.1 2013/07/11 16:40:27 matt Exp $ */ 2*84d9c625SLionel Sambuc 3*84d9c625SLionel Sambuc/*- 4*84d9c625SLionel Sambuc * Copyright (c) 2013 The NetBSD Foundation, Inc. 5*84d9c625SLionel Sambuc * All rights reserved. 6*84d9c625SLionel Sambuc * 7*84d9c625SLionel Sambuc * This code is derived from software contributed to The NetBSD Foundation 8*84d9c625SLionel Sambuc * by Matt Thomas of 3am Software Foundry. 9*84d9c625SLionel Sambuc * 10*84d9c625SLionel Sambuc * Redistribution and use in source and binary forms, with or without 11*84d9c625SLionel Sambuc * modification, are permitted provided that the following conditions 12*84d9c625SLionel Sambuc * are met: 13*84d9c625SLionel Sambuc * 1. Redistributions of source code must retain the above copyright 14*84d9c625SLionel Sambuc * notice, this list of conditions and the following disclaimer. 15*84d9c625SLionel Sambuc * 2. Redistributions in binary form must reproduce the above copyright 16*84d9c625SLionel Sambuc * notice, this list of conditions and the following disclaimer in the 17*84d9c625SLionel Sambuc * documentation and/or other materials provided with the distribution. 18*84d9c625SLionel Sambuc * 19*84d9c625SLionel Sambuc * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20*84d9c625SLionel Sambuc * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21*84d9c625SLionel Sambuc * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22*84d9c625SLionel Sambuc * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23*84d9c625SLionel Sambuc * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24*84d9c625SLionel Sambuc * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25*84d9c625SLionel Sambuc * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26*84d9c625SLionel Sambuc * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27*84d9c625SLionel Sambuc * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28*84d9c625SLionel Sambuc * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29*84d9c625SLionel Sambuc * POSSIBILITY OF SUCH DAMAGE. 30*84d9c625SLionel Sambuc */ 31*84d9c625SLionel Sambuc 32*84d9c625SLionel Sambuc#include <alpha/asm.h> 33*84d9c625SLionel Sambuc 34*84d9c625SLionel SambucRCSID("$NetBSD: crt0.S,v 1.1 2013/07/11 16:40:27 matt Exp $") 35*84d9c625SLionel Sambuc 36*84d9c625SLionel SambucSTRONG_ALIAS(_start,__start) 37*84d9c625SLionel Sambuc 38*84d9c625SLionel Sambuc/* 39*84d9c625SLionel Sambuc * Assumes kernel (or ld_elf.so) passes the following parameters to 40*84d9c625SLionel Sambuc * user-space in registers: 41*84d9c625SLionel Sambuc * 42*84d9c625SLionel Sambuc * a0 stack pointer 43*84d9c625SLionel Sambuc * a1 cleanup 44*84d9c625SLionel Sambuc * a2 Obj_Entry 45*84d9c625SLionel Sambuc * a3 ps_strings 46*84d9c625SLionel Sambuc */ 47*84d9c625SLionel Sambuc 48*84d9c625SLionel SambucLEAF(__start, 4) 49*84d9c625SLionel Sambuc LDGP(pv) 50*84d9c625SLionel Sambuc mov a1, a0 /* cleanup */ 51*84d9c625SLionel Sambuc mov a2, a1 /* Obj_Entry */ 52*84d9c625SLionel Sambuc mov a3, a2 /* ps_strings */ 53*84d9c625SLionel Sambuc CALL(___start) 54*84d9c625SLionel SambucEND(__start) 55