[gforth] / gforth / fi2c.fs  

gforth: gforth/fi2c.fs

1 : pazsan 1.1 \ Convert image to C include file
2 :    
3 : anton 1.2 \ Copyright (C) 1998 Free Software Foundation, Inc.
4 :    
5 :     \ This file is part of Gforth.
6 :    
7 :     \ Gforth is free software; you can redistribute it and/or
8 :     \ modify it under the terms of the GNU General Public License
9 :     \ as published by the Free Software Foundation; either version 2
10 :     \ of the License, or (at your option) any later version.
11 :    
12 :     \ This program is distributed in the hope that it will be useful,
13 :     \ but WITHOUT ANY WARRANTY; without even the implied warranty of
14 :     \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 :     \ GNU General Public License for more details.
16 :    
17 :     \ You should have received a copy of the GNU General Public License
18 :     \ along with this program; if not, write to the Free Software
19 :     \ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 :    
21 : pazsan 1.1 0 Value image
22 :     0 Value bitmap
23 :    
24 :     Create magicbuf 8 allot
25 :    
26 : pazsan 1.3 Variable bswap?
27 :     Variable tchars
28 : pazsan 1.4 Variable tcell
29 : pazsan 1.3
30 :     : bswap ( n -- n' ) bswap? @ 0= ?EXIT 0
31 :     over 24 rshift $FF and or
32 :     over 8 rshift $FF00 and or
33 :     over 8 lshift $FF0000 and or
34 :     over 24 lshift $FF000000 and or nip ;
35 :    
36 : pazsan 1.1 : search-magic ( fd -- ) >r
37 :     BEGIN magicbuf 8 r@ read-file throw 8 = WHILE
38 : pazsan 1.6 magicbuf s" Gforth2" tuck compare 0= UNTIL
39 : pazsan 1.1 ELSE true abort" No magic found" THEN
40 : pazsan 1.6 1 magicbuf 7 + c@ 5 rshift 3 and lshift tchars !
41 :     1 magicbuf 7 + c@ 1 rshift 3 and lshift tcell !
42 :     magicbuf 7 + c@ 1 and 0=
43 :     [ pad off 1 pad ! pad c@ 1 = ] Literal = bswap? !
44 : pazsan 1.1 rdrop ;
45 :    
46 :     Create image-header 4 cells allot
47 :     Variable image-cells
48 :     Variable bitmap-chars
49 :    
50 :     : read-header ( fd -- )
51 :     image-header 4 cells rot read-file throw drop
52 : pazsan 1.3 image-header 2 cells + @ bswap tchars @ *
53 :     dup cell / image-cells ! 1- 8 cells / 1+ bitmap-chars !
54 : pazsan 1.1 image-cells @ cells allocate throw to image
55 :     bitmap-chars @ allocate throw to bitmap ;
56 :    
57 :     : read-dictionary ( fd -- ) >r
58 :     image image-cells @ cells r> read-file throw drop ;
59 :    
60 :     : read-bitmap ( fd -- ) >r
61 :     bitmap bitmap-chars @ r> read-file throw drop ;
62 :    
63 : pazsan 1.4 : .08x ( n -- ) 0 <# tcell @ 0 ?DO # # LOOP 'x hold '0 hold #> type ;
64 :     : .02x ( n -- ) 0 <# tchars @ 0 ?DO # # LOOP 'x hold '0 hold #> type ;
65 : pazsan 1.1
66 :     : .image ( -- )
67 :     image-cells @ 0 ?DO
68 : pazsan 1.3 I 4 + I' min I ?DO space image I cells + @ bswap .08x ." ," LOOP cr
69 : pazsan 1.1 4 +LOOP ;
70 :    
71 :     : .reloc ( -- )
72 :     bitmap-chars @ 0 ?DO
73 : pazsan 1.4 I $10 + I' min I ?DO space
74 :     0 I tchars @ bounds ?DO 8 lshift bitmap I + c@ + LOOP
75 :     .02x ." ," tchars @ +LOOP cr
76 :     $10 +LOOP ;
77 : pazsan 1.1
78 :     : read-image ( addr u -- )
79 :     r/o bin open-file throw >r
80 :     r@ search-magic
81 :     r@ file-position throw r@ read-header r@ reposition-file throw
82 :     r@ read-dictionary r@ read-bitmap r> close-file throw ;
83 :    
84 :     : .imagesize ( -- )
85 : pazsan 1.4 image-header 3 cells + @ bswap tcell @ / tchars @ * .08x ;
86 : pazsan 1.1
87 :     : .relocsize ( -- )
88 : pazsan 1.5 bitmap-chars @ 1- tchars @ / 1+ .08x ;
89 : pazsan 1.1
90 :     : fi2c ( addr u -- ) base @ >r hex
91 :     read-image
92 :     ." #include " '" emit ." forth.h" '" emit cr
93 :     ." Cell image[" .imagesize ." ] = {" cr .image ." };" cr
94 :     ." const char reloc_bits[" .relocsize ." ] = {" cr .reloc ." };" cr
95 :     r> base ! ;
96 :    
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