Annotation of sys/kern/genassym.sh, Revision 1.1.1.1
1.1 nbrk 1: # $OpenBSD: genassym.sh,v 1.11 2004/02/01 13:13:37 miod Exp $
2: # $NetBSD: genassym.sh,v 1.9 1998/04/25 19:48:27 matthias Exp $
3:
4: #
5: # Copyright (c) 1997 Matthias Pfaller.
6: # All rights reserved.
7: #
8: # Redistribution and use in source and binary forms, with or without
9: # modification, are permitted provided that the following conditions
10: # are met:
11: # 1. Redistributions of source code must retain the above copyright
12: # notice, this list of conditions and the following disclaimer.
13: # 2. Redistributions in binary form must reproduce the above copyright
14: # notice, this list of conditions and the following disclaimer in the
15: # documentation and/or other materials provided with the distribution.
16: # 3. All advertising materials mentioning features or use of this software
17: # must display the following acknowledgement:
18: # This product includes software developed by Matthias Pfaller.
19: # 4. The name of the author may not be used to endorse or promote products
20: # derived from this software without specific prior written permission
21: #
22: # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23: # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24: # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25: # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26: # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27: # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28: # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29: # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30: # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31: # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32: #
33:
34: # If first argument is -c, create a temporary C file,
35: # compile it and execute the result.
36:
37: awk=${AWK:-awk}
38:
39: if [ "x$1" = "x-c" ] ; then
40: shift
41: ccode=1
42: else
43: ccode=0
44: fi
45:
46: TMPC=`mktemp /tmp/genassym_c.XXXXXXXXXX` || exit 1
47: TMP=`mktemp /tmp/genassym.XXXXXXXXXX` || {
48: rm -f ${TMPC}
49: exit 1
50: }
51: trap "rm -f $TMPC $TMP" 0 1 2 3 15
52:
53: $awk '
54: BEGIN {
55: printf("#ifndef _KERNEL\n#define _KERNEL\n#endif\n");
56: printf("#define offsetof(type, member) ((size_t)(&((type *)0)->member))\n");
57: defining = 0;
58: type = "long";
59: asmtype = "n";
60: asmprint = "";
61: }
62:
63: $0 ~ /^[ \t]*#.*/ || $0 ~ /^[ \t]*$/ {
64: # Just ignore comments and empty lines
65: next;
66: }
67:
68: $0 ~ /^config[ \t]/ {
69: type = $2;
70: asmtype = $3;
71: asmprint = $4;
72: next;
73: }
74:
75: /^include[ \t]/ {
76: if (defining != 0) {
77: defining = 0;
78: printf("}\n");
79: }
80: if (includes[$2] == 0) {
81: printf("#%s\n", $0);
82: includes[$2] = 1;
83: }
84: next;
85: }
86:
87: $0 ~ /^if[ \t]/ ||
88: $0 ~ /^ifdef[ \t]/ ||
89: $0 ~ /^ifndef[ \t]/ ||
90: $0 ~ /^else/ ||
91: $0 ~ /^elif[ \t]/ ||
92: $0 ~ /^endif/ {
93: printf("#%s\n", $0);
94: next;
95: }
96:
97: /^union[ \t]/ {
98: structname = $2;
99: prefixname = toupper($3);
100: structtype = "union"
101: if (union[structname] == 1)
102: next;
103: else {
104: union[structname] = 1;
105: $0 = "define " toupper(structname) "_SIZEOF sizeof(union " structname ")";
106: }
107: # fall through
108: }
109:
110: /^struct[ \t]/ {
111: structname = $2;
112: prefixname = toupper($3);
113: structtype = "struct"
114: if (struct[structname] == 1)
115: next;
116: else {
117: struct[structname] = 1;
118: $0 = "define " toupper(structname) "_SIZEOF sizeof(struct " structname ")";
119: }
120: # fall through
121: }
122:
123: /^member[ \t]/ {
124: if (NF > 2)
125: $0 = "define " prefixname toupper($2) " offsetof(" structtype " " structname ", " $3 ")";
126: else
127: $0 = "define " prefixname toupper($2) " offsetof(" structtype " " structname ", " $2 ")";
128: # fall through
129: }
130:
131: /^export[ \t]/ {
132: $0 = "define " $2 " " $2;
133: # fall through
134: }
135:
136: /^define[ \t]/ {
137: if (defining == 0) {
138: defining = 1;
139: printf("void f" FNR "(void);\n");
140: printf("void f" FNR "() {\n");
141: if (ccode)
142: call[FNR] = "f" FNR;
143: defining = 1;
144: }
145: value = $0
146: gsub("^define[ \t]+[A-Za-z_][A-Za-z_0-9]*[ \t]+", "", value)
147: if (ccode)
148: printf("printf(\"#define " $2 " %%ld\\n\", (%s)" value ");\n", type);
149: else
150: printf("__asm(\"XYZZY %s %%%s0\" : : \"%s\" (%s));\n", $2, asmprint, asmtype, value);
151: next;
152: }
153:
154: /^quote[ \t]/ {
155: gsub("^quote[ \t]+", "");
156: print;
157: next;
158: }
159:
160: {
161: printf("syntax error in line %d\n", FNR) >"/dev/stderr";
162: exit(1);
163: }
164:
165: END {
166: if (defining != 0) {
167: defining = 0;
168: printf("}\n");
169: }
170: if (ccode) {
171: printf("int main(int argc, char **argv) {");
172: for (i in call)
173: printf(call[i] "();");
174: printf("return(0); }\n");
175: }
176: }
177: ' ccode=$ccode > $TMPC || exit 1
178:
179: if [ $ccode = 1 ] ; then
180: "$@" -x c $TMPC -o $TMP && $TMP
181: else
182: # Kill all of the "#" and "$" modifiers; locore.s already
183: # prepends the correct "constant" modifier.
184: "$@" -x c -S ${TMPC} -o ${TMP} || exit 1
185: sed -e 's/#//g' -e 's/\$//g' ${TMP} | sed -n 's/.*XYZZY/#define/gp'
186: fi
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