1: \ Convert image to C include file
2:
3: \ Copyright (C) 1998,1999,2002,2003 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., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
20:
21: require string.fs
22:
23: 0 Value image
24: 0 Value bitmap
25:
26: Create magicbuf 8 allot
27:
28: Create groups 32 0 [DO] 512 cells allocate throw dup 512 cells erase , [LOOP]
29:
30: : prefix? ( string u1 prefix u2 -- flag )
31: tuck 2>r umin 2r> str= ;
32:
33: : read-groups ( addr u -- )
34: r/o open-file throw >r 0 0
35: BEGIN pad $100 r@ read-line throw WHILE
36: pad swap 2dup s" GROUP(" prefix?
37: IF 2drop drop 1+ 0 ELSE
38: 2dup s" INST_ADDR(" prefix?
39: IF &10 /string 2dup ') scan nip -
40: 2over cells swap cells groups + @ + $!
41: 1+
42: ELSE 2drop THEN THEN
43: REPEAT
44: 2drop r> close-file throw ;
45: s" prim_lab.i" read-groups
46:
47: Variable bswap?
48: Variable endian
49: Variable tchars
50: Variable tcell
51: Variable au
52:
53: : t@ ( addr -- x )
54: endian @ IF
55: 0 swap tcell @ bounds ?DO
56: 8 lshift I c@ or
57: LOOP
58: ELSE
59: 0 swap tcell @ bounds ?DO
60: 8 rshift I c@ 8 tcell @ 1- * lshift or
61: LOOP
62: THEN
63: dup 1 8 tcell @ * 1- lshift and negate or ;
64:
65: 1 cells 4 = [IF]
66: : bswap ( n -- n' ) bswap? @ 0= ?EXIT 0
67: over 24 rshift $FF and or
68: over 8 rshift $FF00 and or
69: over 8 lshift $FF0000 and or
70: over 24 lshift $FF000000 and or nip ;
71: [THEN]
72:
73: 1 cells 8 = [IF]
74: : bswap ( n -- n' ) bswap? @ 0= ?EXIT 0
75: over 56 rshift $FF and or
76: over 40 rshift $FF00 and or
77: over 24 rshift $FF0000 and or
78: over 8 rshift $FF000000 and or
79: over 8 lshift $FF00000000 and or
80: over 24 lshift $FF0000000000 and or
81: over 40 lshift $FF000000000000 and or
82: over 56 lshift $FF00000000000000 and or
83: nip ;
84: [THEN]
85:
86: : search-magic ( fd -- ) >r
87: BEGIN magicbuf 8 r@ read-file throw 8 = WHILE
88: magicbuf s" Gforth3" tuck str= UNTIL
89: ELSE true abort" No magic found" THEN
90: 1 magicbuf 7 + c@ 5 rshift 3 and lshift tchars !
91: 1 magicbuf 7 + c@ 1 rshift 3 and lshift tcell !
92: 1 magicbuf 7 + c@ 3 rshift 3 and lshift au !
93: magicbuf 7 + c@ 1 and 0= dup endian !
94: [ pad off 1 pad ! pad c@ 1 = ] Literal = bswap? !
95: ." /* Image with " tcell @ . ." bytes cell, " tchars @ . ." bytes per char and " au @ . ." bytes per address unit */" cr
96: rdrop ;
97:
98: Create image-header 4 cells allot
99: Variable image-cells
100: Variable bitmap-chars
101:
102: : read-header ( fd -- )
103: image-header 4 tcell @ * rot read-file throw drop
104: image-header 2 tcell @ * + t@ tchars @ * tcell @ / au @ /
105: dup image-cells ! 1- 8 / tchars @ / 1+ bitmap-chars !
106: image-cells @ tcell @ * allocate throw to image
107: bitmap-chars @ allocate throw to bitmap ;
108:
109: : read-dictionary ( fd -- ) >r
110: image image-cells @ tcell @ * r> read-file throw drop ;
111:
112: : read-bitmap ( fd -- ) >r
113: bitmap bitmap-chars @ tchars @ * r> read-file throw drop ;
114:
115: : .08x ( n -- ) 0 <# tcell @ 0 ?DO # # LOOP 'x hold '0 hold #> type ;
116: : .02x ( n -- ) 0 <# tchars @ 0 ?DO # # LOOP 'x hold '0 hold #> type ;
117:
118: : bit@ ( addr n -- flag )
119: dup 7 and $80 swap rshift >r 3 rshift + c@ r> and
120: 0<> ;
121:
122: : .image ( -- )
123: image-cells @ 0 ?DO
124: I 1 + I' min I ?DO space image I tcell @ * + t@
125: bitmap I bit@ IF
126: dup 0< IF
127: negate dup $3E00 and 9 rshift swap $1FF and
128: over cells groups + @ over $1FF and cells +
129: dup @ 0= IF drop
130: 2dup 0 8 d= IF 2drop s" doesjump"
131: ELSE
132: <# '] hold 0 #S 2drop '[ hold '] hold
133: 0 #S '[ hold #>
134: THEN
135: ELSE
136: >r 2drop r> $@
137: THEN
138: ." &&" type
139: ELSE
140: ." image+" tcell @ / .08x
141: THEN
142: ELSE
143: .08x
144: THEN ." ,"
145: LOOP cr
146: 1 +LOOP ;
147:
148: : .reloc ( -- )
149: bitmap-chars @ tchars @ * 0 ?DO
150: I $10 + I' min I ?DO space
151: 0 I tchars @ bounds ?DO 8 lshift bitmap I + c@ + LOOP
152: .02x ." ," tchars @ +LOOP cr
153: $10 +LOOP ;
154:
155: : read-image ( addr u -- )
156: r/o bin open-file throw >r
157: r@ search-magic
158: r@ file-position throw r@ read-header r@ reposition-file throw
159: r@ read-dictionary r@ read-bitmap r> close-file throw ;
160:
161: : .imagesize ( -- )
162: image-header 3 tcell @ * + t@ tchars @ * tcell @ / au @ / .08x ;
163:
164: : .relocsize ( -- )
165: bitmap-chars @ .08x ;
166:
167: : fi2c ( addr u -- ) base @ >r hex
168: read-image
169: ." #include " '" emit ." forth.h" '" emit cr
170: ." void* image[" .imagesize ." ] = {" cr .image ." };" cr
171: ." const char reloc_bits[" .relocsize ." ] = {" cr .reloc ." };" cr
172: r> base ! ;
173:
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