Initial source

1 files changed, 78 insertions, 0 deletions

diff --git a/gensym.awk b/gensym.awk
new file mode 100644
index 00000000..21283214
--- /dev/null
+++ b/gensym.awk
@@ -0,0 +1,78 @@
+#
+# Copyright (c) 1994 The University of Utah and
+# the Computer Systems Laboratory (CSL).  All rights reserved.
+#
+# Permission to use, copy, modify and distribute this software and its
+# documentation is hereby granted, provided that both the copyright
+# notice and this permission notice appear in all copies of the
+# software, derivative works or modified versions, and any portions
+# thereof, and that both notices appear in supporting documentation.
+#
+# THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
+# IS" CONDITION.  THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
+# ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+#
+# CSL requests users of this software to return to csl-dist@cs.utah.edu any
+# improvements that they make and grant CSL redistribution rights.
+#
+#      Author: Bryan Ford, University of Utah CSL
+#
+
+BEGIN {
+	bogus_printed = "no"
+}
+
+# Start the bogus function just before the first sym directive,
+# so that any #includes higher in the file don't get stuffed inside it.
+/^[a-z]/ {
+	if (bogus_printed == "no")
+	{
+		print "void bogus() {";
+		bogus_printed = "yes";
+	}
+}
+
+# Take an arbitrarily complex C symbol or expression and constantize it.
+/^expr/ {
+	print "__asm (\"";
+	if ($3 == "")
+		printf "* %s mAgIc%%0\" : : \"i\" (%s));\n", $2, $2;
+	else
+		printf "* %s mAgIc%%0\" : : \"i\" (%s));\n", $3, $2;
+}
+
+# Output a symbol defining the size of a C structure.
+/^size/ {
+	print "__asm (\"";
+	if ($4 == "")
+		printf "* %s_SIZE mAgIc%%0\" : : \"i\" (sizeof(struct %s)));\n",
+			toupper($3), $2;
+	else
+		printf "* %s mAgIc%%0\" : : \"i\" (sizeof(struct %s)));\n",
+			$4, $2;
+}
+
+# Output a symbol defining the byte offset of an element of a C structure.
+/^offset/ {
+	print "__asm (\"";
+	if ($5 == "")
+	{
+		printf "* %s_%s mAgIc%%0\" : : \"i\" (&((struct %s*)0)->%s));\n",
+			toupper($3), toupper($4), $2, $4;
+	}
+	else
+	{
+		printf "* %s mAgIc%%0\" : : \"i\" (&((struct %s*)0)->%s));\n",
+			toupper($5), $2, $4;
+	}
+}
+
+# Copy through all preprocessor directives.
+/^#/ {
+	print
+}
+
+END {
+	print "}"
+}
+