1/* $NetBSD: rtld_start.S,v 1.3 1999/10/18 03:26:53 itohy Exp $ */ 2 3/*- 4 * Copyright (c) 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Klaus Klein. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39#include <machine/asm.h> 40 41 .text 42 .align 4 43 .globl .rtld_start 44 .type .rtld_start,@function 45.rtld_start: 46 subql #8,%sp | storage for obj and cleanup 47 pea (%sp) | push sp 48 jbsr _rtld@PLTPC | entry = _rtld(sp) 49 addql #4,%sp | pop argument 50 moveal (%sp)+,%a1 | cleanup 51 moveal (%sp)+,%a0 | obj 52 moveal %d0,%a3 53 jmp (%a3) | Go for it! 54 .size .rtld_start,.-.rtld_start 55 56 .align 4 57 .globl _rtld_bind_start 58 .type _rtld_bind_start,@function 59_rtld_bind_start: 60 moveml %d0-%d1/%a0-%a1,-(%sp) | preserve caller-saved registers 61 movel 20(%sp),-(%sp) | push reloff 62 movel (16+4)(%sp),-(%sp) | push obj 63 jbsr _rtld_bind@PLTPC | %a0 = _rtld_bind(obj, reloff) 64 addql #8,%sp | pop args 65#ifdef __SVR4_ABI__ 66 movel %a0,(16+4)(%sp) | write fake `return' address over obj 67#else 68 movel %d0,(16+4)(%sp) | write fake `return' address over obj 69#endif 70 moveml (%sp)+,%d0-%d1/%a0-%a1 | restore caller-saved registers 71 addql #4,%sp | skip reloff 72 rts | `return' right into function 73 .size _rtld_bind_start,.-_rtld_bind_start 74