loader.4th revision 46005
1\ Copyright (c) 1999 Daniel C. Sobral <dcs@freebsd.org> 2\ All rights reserved. 3\ 4\ Redistribution and use in source and binary forms, with or without 5\ modification, are permitted provided that the following conditions 6\ are met: 7\ 1. Redistributions of source code must retain the above copyright 8\ notice, this list of conditions and the following disclaimer. 9\ 2. Redistributions in binary form must reproduce the above copyright 10\ notice, this list of conditions and the following disclaimer in the 11\ documentation and/or other materials provided with the distribution. 12\ 13\ THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14\ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15\ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16\ ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17\ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18\ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19\ OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20\ HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21\ LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22\ OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23\ SUCH DAMAGE. 24\ 25\ $Id: loader.4th,v 1.1 1999/03/09 14:06:55 dcs Exp $ 26 27include /boot/support.4th 28 29only forth definitions also support-functions 30 31\ ***** boot-conf 32\ 33\ Prepares to boot as specified by loaded configuration files. 34 35: boot-conf 36 load_kernel 37 load_modules 38 0 autoboot 39; 40 41\ ***** start 42\ 43\ Initializes support.4th global variables, sets loader_conf_files, 44\ process conf files, and, if any one such file was succesfully 45\ read to the end, load kernel and modules. 46 47: start ( -- ) ( throws: abort & user-defined ) 48 s" /boot/defaults/loader.conf" initialize 49 include_conf_files 50 \ Will *NOT* try to load kernel and modules if no configuration file 51 \ was succesfully loaded! 52 any_conf_read? if 53 load_kernel 54 load_modules 55 then 56; 57 58\ ***** read-conf 59\ 60\ Read a configuration file, whose name was specified on the command 61\ line, if interpreted, or given on the stack, if compiled in. 62 63: (read-conf) ( addr len -- ) 64 conf_files .addr @ ?dup if free abort" Fatal error freeing memory" then 65 strdup conf_files .len ! conf_files .addr ! 66 include_conf_files \ Will recurse on new loader_conf_files definitions 67; 68 69: read-conf ( <filename> | addr len -- ) ( throws: abort & user-defined ) 70 state @ if 71 \ Compiling 72 postpone (read-conf) 73 else 74 \ Interpreting 75 bl parse (read-conf) 76 then 77; immediate 78 79\ ***** enable-module 80\ 81\ Turn a module loading on. 82 83: enable-module ( <module> -- ) 84 bl parse module_options @ >r 85 begin 86 r@ 87 while 88 2dup 89 r@ module.name dup .addr @ swap .len @ 90 compare 0= if 91 2drop 92 r@ module.name dup .addr @ swap .len @ type 93 true r> module.flag ! 94 ." will be loaded." cr 95 exit 96 then 97 r> module.next @ >r 98 repeat 99 r> drop 100 type ." wasn't found." cr 101; 102 103\ ***** disable-module 104\ 105\ Turn a module loading off. 106 107: disable-module ( <module> -- ) 108 bl parse module_options @ >r 109 begin 110 r@ 111 while 112 2dup 113 r@ module.name dup .addr @ swap .len @ 114 compare 0= if 115 2drop 116 r@ module.name dup .addr @ swap .len @ type 117 false r> module.flag ! 118 ." will not be loaded." cr 119 exit 120 then 121 r> module.next @ >r 122 repeat 123 r> drop 124 type ." wasn't found." cr 125; 126 127\ ***** toggle-module 128\ 129\ Turn a module loading on/off. 130 131: toggle-module ( <module> -- ) 132 bl parse module_options @ >r 133 begin 134 r@ 135 while 136 2dup 137 r@ module.name dup .addr @ swap .len @ 138 compare 0= if 139 2drop 140 r@ module.name dup .addr @ swap .len @ type 141 r@ module.flag @ 0= dup r> module.flag ! 142 if 143 ." will be loaded." cr 144 else 145 ." will not be loaded." cr 146 then 147 exit 148 then 149 r> module.next @ >r 150 repeat 151 r> drop 152 type ." wasn't found." cr 153; 154 155\ ***** show-module 156\ 157\ Show loading information about a module. 158 159: show-module ( <module> -- ) 160 bl parse module_options @ >r 161 begin 162 r@ 163 while 164 2dup 165 r@ module.name dup .addr @ swap .len @ 166 compare 0= if 167 2drop 168 ." Name: " r@ module.name dup .addr @ swap .len @ type cr 169 ." Path: " r@ module.loadname dup .addr @ swap .len @ type cr 170 ." Type: " r@ module.type dup .addr @ swap .len @ type cr 171 ." Flags: " r@ module.args dup .addr @ swap .len @ type cr 172 ." Before load: " r@ module.beforeload dup .addr @ swap .len @ type cr 173 ." After load: " r@ module.afterload dup .addr @ swap .len @ type cr 174 ." Error: " r@ module.loaderror dup .addr @ swap .len @ type cr 175 ." Status: " r> module.flag @ if ." Load" else ." Don't load" then cr 176 exit 177 then 178 r> module.next @ >r 179 repeat 180 r> drop 181 type ." wasn't found." cr 182; 183 184\ Words to be used inside configuration files 185 186: retry false ; \ For use in load error commands 187: ignore true ; \ For use in load error commands 188 189\ Return to strict forth vocabulary 190 191only forth also 192 193