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Image starts at $100 for cross-compilation now. A NULL-reference
is really a reference to address 0 and NIL is 0.
In the kernel image-header to get the headers address.
Image loading is only changed minimal: The stuff with fixed
addressed images is thrown out, because every image is relocatable.
No header change. Old images should work.

\ MAIN.FS      Kernel main load file                   20may93jaw

\ Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc.

\ This file is part of Gforth.

\ Gforth is free software; you can redistribute it and/or
\ modify it under the terms of the GNU General Public License
\ as published by the Free Software Foundation; either version 2
\ of the License, or (at your option) any later version.

\ This program is distributed in the hope that it will be useful,
\ but WITHOUT ANY WARRANTY; without even the implied warranty of
\ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
\ GNU General Public License for more details.

\ You should have received a copy of the GNU General Public License
\ along with this program; if not, write to the Free Software
\ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.

\ : include bl word count included ;
\ we want write include...

\ : : ( -- colon-sys )  Header [ ' : @ ] ALiteral cfa, 0 ] ;
\ : ; ( colon-sys -- )  ?struc postpone exit reveal postpone [ ; immediate
\ : :noname ( -- xt colon-sys )  here [ ' : @ ] ALiteral cfa, 0 ] ;

Create mach-file here over 1+ allot place

0 [IF]
\ debugging: produce a relocation and a symbol table
s" rel-table" r/w create-file throw
Constant fd-relocation-table

\ debuggging: produce a symbol table
s" sym-table" r/w create-file throw
Constant fd-symbol-table
[THEN]


bl word vocabulary find nip 0= [IF]
    \ if search order stuff is missing assume we are compiling on a gforth
    \ system and include it.
    \ We want the files taken from our current gforth installation
    \ so we don't include relatively to this file
    require search.fs
    require environ.fs
    require envos.fs
    require errors.fs
    require extend.fs              \ core-extended
    require hash.fs
[THEN]

\ include etags.fs

include ./../cross.fs              \ cross-compiler

decimal

has? kernel-size makekernel
\ create image-header
has? header [IF]
here dup 
    A,                  \ base address
    0 ,                 \ checksum
    0 ,                 \ image size (without tags)
has? kernel-size
    ,                   \ dict size
    has? stack-size ,   \ data stack size
    has? fstack-size ,  \ FP stack size
    has? rstack-size ,  \ return stack size
    has? lstack-size ,  \ locals stack size
    0 A,                \ code entry point
    0 A,                \ throw entry point
    has? stack-size ,   \ unused (possibly tib stack size)
    0 ,                 \ unused
    0 ,                 \ data stack base
    0 ,                 \ fp stack base
    0 ,                 \ return stack base
    0 ,                 \ locals stack base
AConstant image-header
: forthstart image-header @ ;
[THEN]

UNLOCK ghost - drop \ need a ghost otherwise "-" would be treated as a number
LOCK

doc-off
has? prims [IF]
    include ./aliases.fs             \ primitive aliases
[ELSE]
    prims-include
    undef-words
    include prim.fs
    all-words  UNLOCK LOCK
[THEN]
doc-on

\ 0 AConstant forthstart

\ include ./vars.fs                  \ variables and other stuff
\ include kernel/version.fs          \ is in $(build)/kernel
include ./kernel.fs                  \ kernel
\ include ./errore.fs
include ./doers.fs
has? file [IF]
    include ./args.fs
    include ./files.fs               \ file words
    include ./paths.fs
    include ./require.fs
[THEN]

has? compiler [IF]
    has? glocals [IF]
        include ./cond.fs            \ IF and co.
    [ELSE]
        include ./cond-old.fs        \ IF and co. withoutlocals
    [THEN]
    \ these two games can be added to provide complex examples for the 4stack
    \ and misc simulators (see arch/4stack/README and arch/misc/README).
    \ include arch/misc/tt.fs
    \ include arch/misc/sokoban.fs
[THEN]
include ./quotes.fs
include ./toolsext.fs
include ./tools.fs               \ load tools ( .s dump )
include ./getdoers.fs

\ Setup                                                13feb93py

has? header [IF]
    \    UNLOCK
    here image-header 2 cells + !         \ image size
    ' boot >body  image-header 8 cells + A!         \ image entry point
    \    LOCK
[ELSE]
    >boot
[THEN]

include ./pass.fs                    \ pass pointers from cross to target

.unresolved                          \ how did we do?