\ Copyright (c) 1999 Daniel C. Sobral \ All rights reserved. \ \ Redistribution and use in source and binary forms, with or without \ modification, are permitted provided that the following conditions \ are met: \ 1. Redistributions of source code must retain the above copyright \ notice, this list of conditions and the following disclaimer. \ 2. Redistributions in binary form must reproduce the above copyright \ notice, this list of conditions and the following disclaimer in the \ documentation and/or other materials provided with the distribution. \ \ THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND \ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE \ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE \ ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE \ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL \ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS \ OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) \ HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT \ LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY \ OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF \ SUCH DAMAGE. \ \ $FreeBSD: src/sys/boot/forth/loader.4th,v 1.24 2002/05/24 02:28:58 gordon Exp $ s" arch-alpha" environment? [if] [if] s" loader_version" environment? [if] 12 < [if] .( Loader version 1.2+ required) cr abort [then] [else] .( Could not get loader version!) cr abort [then] [then] [then] s" arch-i386" environment? [if] [if] s" loader_version" environment? [if] 11 < [if] .( Loader version 1.1+ required) cr abort [then] [else] .( Could not get loader version!) cr abort [then] [then] [then] 256 dictthreshold ! \ 256 cells minimum free space 2048 dictincrease ! \ 2048 additional cells each time include /boot/support.4th \ ***** boot-conf \ \ Prepares to boot as specified by loaded configuration files. only forth also support-functions also builtins definitions : boot 0= if ( interpreted ) get_arguments then \ Unload only if a path was passed dup if >r over r> swap c@ [char] - <> if 0 1 unload drop else s" kernelname" getenv? if ( a kernel has been loaded ) 1 boot exit then load_kernel_and_modules ?dup if exit then 0 1 boot exit then else s" kernelname" getenv? if ( a kernel has been loaded ) 1 boot exit then load_kernel_and_modules ?dup if exit then 0 1 boot exit then load_kernel_and_modules ?dup 0= if 0 1 boot then ; : boot-conf 0= if ( interpreted ) get_arguments then 0 1 unload drop load_kernel_and_modules ?dup 0= if 0 1 autoboot then ; also forth definitions also builtins builtin: boot builtin: boot-conf only forth definitions also support-functions \ ***** check-password \ \ If a password was defined, execute autoboot and ask for \ password if autoboot returns. : check-password password .addr @ if 0 autoboot false >r begin bell emit bell emit ." Password: " password .len @ read-password dup password .len @ = if 2dup password .addr @ password .len @ compare 0= if r> drop true >r then then drop free drop r@ until r> drop then ; \ ***** start \ \ Initializes support.4th global variables, sets loader_conf_files, \ process conf files, and, if any one such file was succesfully \ read to the end, load kernel and modules. : start ( -- ) ( throws: abort & user-defined ) s" /boot/defaults/loader.conf" initialize include_conf_files include_nextboot_file \ Will *NOT* try to load kernel and modules if no configuration file \ was succesfully loaded! any_conf_read? if load_kernel load_modules then ; \ ***** initialize \ \ Overrides support.4th initialization word with one that does \ everything start one does, short of loading the kernel and \ modules. Returns a flag : initialize ( -- flag ) s" /boot/defaults/loader.conf" initialize include_conf_files include_nextboot_file any_conf_read? ; \ ***** read-conf \ \ Read a configuration file, whose name was specified on the command \ line, if interpreted, or given on the stack, if compiled in. : (read-conf) ( addr len -- ) conf_files .addr @ ?dup if free abort" Fatal error freeing memory" then strdup conf_files .len ! conf_files .addr ! include_conf_files \ Will recurse on new loader_conf_files definitions ; : read-conf ( | addr len -- ) ( throws: abort & user-defined ) state @ if \ Compiling postpone (read-conf) else \ Interpreting bl parse (read-conf) then ; immediate \ ***** enable-module \ \ Turn a module loading on. : enable-module ( -- ) bl parse module_options @ >r begin r@ while 2dup r@ module.name dup .addr @ swap .len @ compare 0= if 2drop r@ module.name dup .addr @ swap .len @ type true r> module.flag ! ." will be loaded." cr exit then r> module.next @ >r repeat r> drop type ." wasn't found." cr ; \ ***** disable-module \ \ Turn a module loading off. : disable-module ( -- ) bl parse module_options @ >r begin r@ while 2dup r@ module.name dup .addr @ swap .len @ compare 0= if 2drop r@ module.name dup .addr @ swap .len @ type false r> module.flag ! ." will not be loaded." cr exit then r> module.next @ >r repeat r> drop type ." wasn't found." cr ; \ ***** toggle-module \ \ Turn a module loading on/off. : toggle-module ( -- ) bl parse module_options @ >r begin r@ while 2dup r@ module.name dup .addr @ swap .len @ compare 0= if 2drop r@ module.name dup .addr @ swap .len @ type r@ module.flag @ 0= dup r> module.flag ! if ." will be loaded." cr else ." will not be loaded." cr then exit then r> module.next @ >r repeat r> drop type ." wasn't found." cr ; \ ***** show-module \ \ Show loading information about a module. : show-module ( -- ) bl parse module_options @ >r begin r@ while 2dup r@ module.name dup .addr @ swap .len @ compare 0= if 2drop ." Name: " r@ module.name dup .addr @ swap .len @ type cr ." Path: " r@ module.loadname dup .addr @ swap .len @ type cr ." Type: " r@ module.type dup .addr @ swap .len @ type cr ." Flags: " r@ module.args dup .addr @ swap .len @ type cr ." Before load: " r@ module.beforeload dup .addr @ swap .len @ type cr ." After load: " r@ module.afterload dup .addr @ swap .len @ type cr ." Error: " r@ module.loaderror dup .addr @ swap .len @ type cr ." Status: " r> module.flag @ if ." Load" else ." Don't load" then cr exit then r> module.next @ >r repeat r> drop type ." wasn't found." cr ; \ Words to be used inside configuration files : retry false ; \ For use in load error commands : ignore true ; \ For use in load error commands \ Return to strict forth vocabulary : #type over - >r type r> spaces ; : .? 2 spaces 2swap 15 #type 2 spaces type cr ; : ? ['] ? execute s" boot-conf" s" load kernel and modules, then autoboot" .? s" read-conf" s" read a configuration file" .? s" enable-module" s" enable loading of a module" .? s" disable-module" s" disable loading of a module" .? s" toggle-module" s" toggle loading of a module" .? s" show-module" s" show module load data" .? ; only forth also