Annotation of gforth/fi2c.fs, revision 1.10
1.1 pazsan 1: \ Convert image to C include file
2:
1.9 anton 3: \ Copyright (C) 1998,1999 Free Software Foundation, Inc.
1.2 anton 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
1.10 ! anton 19: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
1.2 anton 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
1.7 pazsan 29: Variable au
1.3 pazsan 30:
31: : bswap ( n -- n' ) bswap? @ 0= ?EXIT 0
32: over 24 rshift $FF and or
33: over 8 rshift $FF00 and or
34: over 8 lshift $FF0000 and or
35: over 24 lshift $FF000000 and or nip ;
36:
1.1 pazsan 37: : search-magic ( fd -- ) >r
38: BEGIN magicbuf 8 r@ read-file throw 8 = WHILE
1.6 pazsan 39: magicbuf s" Gforth2" tuck compare 0= UNTIL
1.1 pazsan 40: ELSE true abort" No magic found" THEN
1.6 pazsan 41: 1 magicbuf 7 + c@ 5 rshift 3 and lshift tchars !
42: 1 magicbuf 7 + c@ 1 rshift 3 and lshift tcell !
1.7 pazsan 43: 1 magicbuf 7 + c@ 3 rshift 3 and lshift au !
1.6 pazsan 44: magicbuf 7 + c@ 1 and 0=
45: [ pad off 1 pad ! pad c@ 1 = ] Literal = bswap? !
1.7 pazsan 46: ." /* Image with " tcell @ . ." bytes cell, " tchars @ . ." bytes per char and " au @ . ." bytes per address unit */" cr
1.1 pazsan 47: rdrop ;
48:
49: Create image-header 4 cells allot
50: Variable image-cells
51: Variable bitmap-chars
52:
53: : read-header ( fd -- )
54: image-header 4 cells rot read-file throw drop
1.7 pazsan 55: image-header 2 cells + @ bswap tchars @ * au @ /
1.8 pazsan 56: dup image-cells ! 1- 8 / tchars @ / 1+ bitmap-chars !
1.1 pazsan 57: image-cells @ cells allocate throw to image
58: bitmap-chars @ allocate throw to bitmap ;
59:
60: : read-dictionary ( fd -- ) >r
61: image image-cells @ cells r> read-file throw drop ;
62:
63: : read-bitmap ( fd -- ) >r
1.8 pazsan 64: bitmap bitmap-chars @ tchars @ * r> read-file throw drop ;
1.1 pazsan 65:
1.4 pazsan 66: : .08x ( n -- ) 0 <# tcell @ 0 ?DO # # LOOP 'x hold '0 hold #> type ;
67: : .02x ( n -- ) 0 <# tchars @ 0 ?DO # # LOOP 'x hold '0 hold #> type ;
1.1 pazsan 68:
69: : .image ( -- )
70: image-cells @ 0 ?DO
1.3 pazsan 71: I 4 + I' min I ?DO space image I cells + @ bswap .08x ." ," LOOP cr
1.1 pazsan 72: 4 +LOOP ;
73:
74: : .reloc ( -- )
1.8 pazsan 75: bitmap-chars @ tchars @ * 0 ?DO
1.4 pazsan 76: I $10 + I' min I ?DO space
77: 0 I tchars @ bounds ?DO 8 lshift bitmap I + c@ + LOOP
78: .02x ." ," tchars @ +LOOP cr
79: $10 +LOOP ;
1.1 pazsan 80:
81: : read-image ( addr u -- )
82: r/o bin open-file throw >r
83: r@ search-magic
84: r@ file-position throw r@ read-header r@ reposition-file throw
85: r@ read-dictionary r@ read-bitmap r> close-file throw ;
86:
87: : .imagesize ( -- )
1.8 pazsan 88: image-header 3 cells + @ bswap .08x ;
1.1 pazsan 89:
90: : .relocsize ( -- )
1.8 pazsan 91: bitmap-chars @ .08x ;
1.1 pazsan 92:
93: : fi2c ( addr u -- ) base @ >r hex
94: read-image
95: ." #include " '" emit ." forth.h" '" emit cr
96: ." Cell image[" .imagesize ." ] = {" cr .image ." };" cr
97: ." const char reloc_bits[" .relocsize ." ] = {" cr .reloc ." };" cr
98: r> base ! ;
99:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>