1$NetBSD: ReadMe.NetBSD,v 1.7 2022/05/28 10:36:22 andvar Exp $ 2 3Copyright (c) 1996 The NetBSD Foundation, Inc. 4All rights reserved. 5 6This code is derived from software contributed to The NetBSD Foundation 7by Ignatios Souvatzis. 8 9Redistribution and use in source and binary forms, with or without 10modification, are permitted provided that the following conditions 11are met: 121. Redistributions of source code must retain the above copyright 13 notice, this list of conditions and the following disclaimer. 142. Redistributions in binary form must reproduce the above copyright 15 notice, this list of conditions and the following disclaimer in the 16 documentation and/or other materials provided with the distribution. 17 18THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28POSSIBILITY OF SUCH DAMAGE. 29 30 31Notes about the NetBSD integration 32---------------------------------- 33 34Preface and Acknowledgements: 35 36A first try at integrating the M68060 Software Package was done by 37Yasushi Yamasaki of the NetBSD/x68k group, but only available as a 38patch file to their source tree (which wasn't integrated into the 39NetBSD master tree at that time). 40 41I started with their glue code version from the patch file, and 42changed the following things up to now: 43 44- collapse a few identical glue routines (fetch code/data words/longs 45from user space) into a multi-labeled one 46 47- make the gas syntax files of the glue code the Master files 48 49- translate the gas syntax files of the Motorola code once, to avoid 50the translation time. 51 52- I call the access error handler (label _buserr) directly, instead of 53through an RTE as in the example file 54 55Other changes are only in the method this was integrated into the 56Amiga vs. X68k port, which is machine dependent anyway. 57 58Thanks for the initial effort! 59 60 61 62I. File suffix convention 63 64I cvs imported all of the Motorola files (with lowercase names). 65These have been moved to the dist subdirectory as of today --- 2000-04-14 66 67These are: 68 69*.s: Assembler files "unsupported by Motorola, provided as a reference only" 70*.sa: Pseudo assembler hex dump files, which is Motorolas supported version. 71*.doc: docs by Motorola 72 73errata, changes, files, readme: by Motorola. 74 75 76I choose .S as the file suffix which is fed to our assembler 77directly or indirectly. 78 79We use: To create: 80 81isp.sa isp.S 82fpsp.sa fpsp.S 83 84Type "make" in this directory to create them, then check in. 85 86In addition, inetbsd.S and fnetbsd.S are our part specific glue files, 87netbsd.S is our general glue file, and copyright.S ensures we have a 88copy of the copyright notice in the kernel if using the 060SP. 89 90To enforce the right relative positions of isp/its glue code inetbsd.S 91includes isp.S at the end, and fnetbsd.S includes fpsp.S. 92 93Ia: Don't Change Files 94 95- all Motorola doc files, all .sa (hex) files. 96 97Ib: Nearly Don't Change Files 98 99- for now, the .s files by Motorola. We might use the fpsp.s file 100later to create an optimized version, once we a) verified its 101identical to the supported .s and b) write a conversion (to .S format) 102script. 103 104II. Interface to the arch/$machine/$machine files: 105 106[to be continued] 107 108