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Diffstat (limited to 'hurd/gensym.awk')
| -rw-r--r-- | hurd/gensym.awk | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/hurd/gensym.awk b/hurd/gensym.awk new file mode 100644 index 00000000..21283214 --- /dev/null +++ b/hurd/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 "}" +} + |