Annotation of gforth/fi2c.fs, revision 1.4
1.1 pazsan 1: \ Convert image to C include file
2:
1.2 anton 3: \ 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:
1.1 pazsan 21: 0 Value image
22: 0 Value bitmap
23:
24: Create magicbuf 8 allot
25:
1.3 pazsan 26: Variable bswap?
27: Variable tchars
1.4 ! pazsan 28: Variable tcell
1.3 pazsan 29:
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:
1.1 pazsan 36: : search-magic ( fd -- ) >r
37: BEGIN magicbuf 8 r@ read-file throw 8 = WHILE
1.3 pazsan 38: magicbuf s" Gforth" tuck compare 0= UNTIL
1.1 pazsan 39: ELSE true abort" No magic found" THEN
1.3 pazsan 40: magicbuf 6 + c@ digit? drop tchars !
1.4 ! pazsan 41: magicbuf 7 + c@ digit? drop dup -2 and tcell !
! 42: 1 and 0= [ pad off 1 pad ! pad c@ 1 = ] Literal = bswap? !
1.1 pazsan 43: rdrop ;
44:
45: Create image-header 4 cells allot
46: Variable image-cells
47: Variable bitmap-chars
48:
49: : read-header ( fd -- )
50: image-header 4 cells rot read-file throw drop
1.3 pazsan 51: image-header 2 cells + @ bswap tchars @ *
52: dup cell / image-cells ! 1- 8 cells / 1+ bitmap-chars !
1.1 pazsan 53: image-cells @ cells allocate throw to image
54: bitmap-chars @ allocate throw to bitmap ;
55:
56: : read-dictionary ( fd -- ) >r
57: image image-cells @ cells r> read-file throw drop ;
58:
59: : read-bitmap ( fd -- ) >r
60: bitmap bitmap-chars @ r> read-file throw drop ;
61:
1.4 ! pazsan 62: : .08x ( n -- ) 0 <# tcell @ 0 ?DO # # LOOP 'x hold '0 hold #> type ;
! 63: : .02x ( n -- ) 0 <# tchars @ 0 ?DO # # LOOP 'x hold '0 hold #> type ;
1.1 pazsan 64:
65: : .image ( -- )
66: image-cells @ 0 ?DO
1.3 pazsan 67: I 4 + I' min I ?DO space image I cells + @ bswap .08x ." ," LOOP cr
1.1 pazsan 68: 4 +LOOP ;
69:
70: : .reloc ( -- )
71: bitmap-chars @ 0 ?DO
1.4 ! pazsan 72: I $10 + I' min I ?DO space
! 73: 0 I tchars @ bounds ?DO 8 lshift bitmap I + c@ + LOOP
! 74: .02x ." ," tchars @ +LOOP cr
! 75: $10 +LOOP ;
1.1 pazsan 76:
77: : read-image ( addr u -- )
78: r/o bin open-file throw >r
79: r@ search-magic
80: r@ file-position throw r@ read-header r@ reposition-file throw
81: r@ read-dictionary r@ read-bitmap r> close-file throw ;
82:
83: : .imagesize ( -- )
1.4 ! pazsan 84: image-header 3 cells + @ bswap tcell @ / tchars @ * .08x ;
1.1 pazsan 85:
86: : .relocsize ( -- )
1.4 ! pazsan 87: bitmap-chars @ tchars @ / .08x ;
1.1 pazsan 88:
89: : fi2c ( addr u -- ) base @ >r hex
90: read-image
91: ." #include " '" emit ." forth.h" '" emit cr
92: ." Cell image[" .imagesize ." ] = {" cr .image ." };" cr
93: ." const char reloc_bits[" .relocsize ." ] = {" cr .reloc ." };" cr
94: r> base ! ;
95:
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