start.S revision 135695
1/* 2 * Copyright (c) 2003 Marcel Moolenaar 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD: head/sys/boot/ia64/ski/start.S 135442 2004-09-18 21:18:44Z marcel $ 27 */ 28 29#define STACKSIZE 16384 30#define FPSR_DEFAULT 0x0009804c0270033f 31 32 .text 33 .global _start 34 .proc _start 35_start: 36{ .mlx 37 mov ar.rsc=0 38 movl gp=__gp 39 ;; 40} 41{ .mlx 42 add r2=@gprel(stack),gp 43 movl r14=FPSR_DEFAULT 44 ;; 45} 46{ .mib 47 mov ar.bspstore=r2 48 add r12=STACKSIZE-16,r2 49 bsw.1 50 ;; 51} 52{ .mmb 53 mov ar.rsc=3 54 mov ar.fpsr=r14 55 br.sptk ski_main 56 ;; 57} 58 .endp _start 59 60 .data 61 .align 16 62stack: .skip STACKSIZE 63