1/* $NetBSD: dot_init.h,v 1.6 2007/05/15 16:51:37 skrll Exp $ */ 2 3/*- 4 * Copyright (c) 2001 Ross Harvey 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the NetBSD 18 * Foundation, Inc. and its contributors. 19 * 4. Neither the name of The NetBSD Foundation nor the names of its 20 * contributors may be used to endorse or promote products derived 21 * from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 37#include <machine/asm.h> 38 39#define ASM_SETUP "sp = $30; gp = $29; pv = $27; ra = $26 \n" 40 41#define MD_SECTION_PROLOGUE(sect, entry_pt) \ 42 __asm ( \ 43 ASM_SETUP \ 44 ".section "#sect",\"ax\",@progbits \n"\ 45 ".global "#entry_pt" \n"\ 46 #entry_pt": \n"\ 47 " ldgp gp, 0(pv) \n"\ 48 " lda sp, -32(sp) \n"\ 49 " stq ra, 0(sp) \n"\ 50 " stq gp, 8(sp) \n"\ 51 " .align 5 \n"\ 52 " /* fall thru */ \n"\ 53 ".previous") 54 55#define MD_SECTION_EPILOGUE(sect) \ 56 __asm ( \ 57 ASM_SETUP \ 58 ".section "#sect",\"ax\",@progbits \n"\ 59 " ldq gp, 8(sp) \n"\ 60 " ldq ra, 0(sp) \n"\ 61 " lda sp, 32(sp) \n"\ 62 " RET \n"\ 63 ".previous") 64 65#define MD_INIT_SECTION_PROLOGUE MD_SECTION_PROLOGUE(.init, _init) 66#define MD_FINI_SECTION_PROLOGUE MD_SECTION_PROLOGUE(.fini, _fini) 67 68#define MD_INIT_SECTION_EPILOGUE MD_SECTION_EPILOGUE(.init) 69#define MD_FINI_SECTION_EPILOGUE MD_SECTION_EPILOGUE(.fini) 70 71/* We assume we need to reload our GP. */ 72#define MD_CALL_STATIC_FUNCTION(section, func) \ 73__asm(".section " #section "\n" \ 74" br $29, 1f \n" \ 75"1: ldgp $29, 0($29) \n" \ 76" unop \n" \ 77" jsr $26, " #func "\n" \ 78" .align 3; .previous"); 79