Import genassym.sh method from NetBSD

diff --git a/sys/kern/genassym.sh b/sys/kern/genassym.sh
new file mode 100644 (file)
index 0000000..9ab8967
--- /dev/null
+++ b/sys/kern/genassym.sh
@@ -0,0 +1,129 @@
+#      $OpenBSD: genassym.sh,v 1.1 1997/03/27 11:50:45 niklas Exp $
+#      $NetBSD: genassym.sh,v 1.6 1997/03/13 22:47:20 gwr Exp $
+
+#
+# Copyright (c) 1997 Matthias Pfaller.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. All advertising materials mentioning features or use of this software
+#    must display the following acknowledgement:
+#      This product includes software developed by Matthias Pfaller.
+# 4. The name of the author may not be used to endorse or promote products
+#    derived from this software without specific prior written permission
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+# If first argument is -c, create a temporary C file,
+# compile it and execute the result.
+
+awk=${AWK:-awk}
+
+if [ $1 = '-c' ] ; then
+       shift
+       ccode=1
+else
+       ccode=0
+fi
+
+trap "rm -f /tmp/$$.c /tmp/genassym.$$" 0 1 2 3 15
+
+$awk '
+BEGIN {
+       printf("#ifndef _KERNEL\n#define _KERNEL\n#endif\n");
+       printf("#define offsetof(type, member) ((size_t)(&((type *)0)->member))\n");
+       defining = 0;
+}
+
+$0 ~ /^[ \t]*#.*/ || $0 ~ /^[ \t]*$/ {
+       # Just ignore comments and empty lines
+       next;
+}
+
+/^include[ \t]/ {
+       if (defining != 0) {
+               defining = 0;
+               printf("}\n");
+       }
+       printf("#%s\n", $0);
+       next;
+}
+
+$0 ~ /^if[ \t]/ ||
+$0 ~ /^ifdef[ \t]/ ||
+$0 ~ /^ifndef[ \t]/ ||
+$0 ~ /^else/ ||
+$0 ~ /^elif[ \t]/ ||
+$0 ~ /^endif/ {
+       printf("#%s\n", $0);
+       next;
+}
+
+/^define[ \t]/ {
+       if (defining == 0) {
+               defining = 1;
+               printf("void f" FNR "(void);\n");
+               printf("void f" FNR "() {\n");
+               if (ccode)
+                       call[FNR] = "f" FNR;
+               defining = 1;
+       }
+       value = $0
+       gsub("^define[ \t]+[A-Za-z_][A-Za-z_0-9]*[ \t]+", "", value)
+       if (ccode)
+               printf("printf(\"#define " $2 " %%ld\\n\", (long)" value ");\n");
+       else
+               printf("__asm(\"XYZZY %s %%0\" : : \"n\" (%s));\n", $2, value);
+       next;
+}
+
+/^quote[ \t]/ {
+       gsub("^quote[ \t]+", "");
+       print;
+       next;
+}
+
+{
+       printf("syntax error in line %d\n", FNR) >"/dev/stderr";
+       exit(1);
+}
+
+END {
+       if (defining != 0) {
+               defining = 0;
+               printf("}\n");
+       }
+       if (ccode) {
+               printf("int main(int argc, char **argv) {");
+               for (i in call)
+                       printf(call[i] "();");
+               printf("return(0); }\n");
+       }
+}
+' ccode=$ccode > /tmp/$$.c || exit 1
+
+if [ $ccode = 1 ] ; then
+       "$@" /tmp/$$.c -o /tmp/genassym.$$ && /tmp/genassym.$$
+else
+       # Kill all of the "#" and "$" modifiers; locore.s already
+       # prepends the correct "constant" modifier.
+       "$@" -S /tmp/$$.c -o -| sed -e 's/#//g' -e 's/\$//g' | \
+           sed -n 's/.*XYZZY/#define/gp'
+fi