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|
\ Copyright (c) 1999 Daniel C. Sobral <dcs@freebsd.org>
\ 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.
\
\ $Id: loader.4th,v 1.2 1999/04/24 17:25:25 dcs Exp $
include /boot/support.4th
only forth definitions also support-functions
\ ***** boot-conf
\
\ Prepares to boot as specified by loaded configuration files.
: boot-conf
load_kernel
load_modules
0 autoboot
;
\ ***** 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
\ 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
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 ( <filename> | 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 ( <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 ( <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 ( <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 ( <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
only forth also
|
