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diff --git a/lib/libsysdecode/mktables b/lib/libsysdecode/mktables
--- a/lib/libsysdecode/mktables
+++ b/lib/libsysdecode/mktables
@@ -48,17 +48,13 @@
all_headers=
#
-# Generate a table C #definitions. The including file can define the
-# TABLE_NAME(n), TABLE_ENTRY(x), and TABLE_END macros to define what
-# the tables map to.
+# Generate a table from C preprocessor symbol definitions. The
+# including file can define the TABLE_NAME(n), TABLE_ENTRY(x), and
+# TABLE_END macros to define what the tables map to.
#
gen_table()
{
- local name grep file excl filter
- name=$1
- grep=$2
- file=$3
- excl=$4
+ local name=$1 grep=$2 file=$3 excl=$4
if [ -z "$excl" ]; then
filter="cat"
@@ -84,6 +80,37 @@
_EOF_
}
+#
+# Generate a table from C enum definitions. The including file can
+# define the TABLE_NAME(n), TABLE_ENTRY(x), and TABLE_END macros to
+# define what the tables map to. Works with most enum definitions as
+# long as each constant is on a line by itself.
+#
+gen_table_enum()
+{
+ local name=$1 grep=$2 file=$3 excl=$4
+
+ cat <<_EOF_
+TABLE_START(${name})
+_EOF_
+ if [ -e "${include_dir}/${file}" ]; then
+ all_headers="${all_headers:+${all_headers} }${file}"
+ # preprocess the header
+ ${CPP:-${CC:-cc} -E} "${include_dir}/${file}" |
+ # filter out directives and apply exclusion
+ sed -Ee '/^#/d' ${excl:+-e "/$excl/d"} |
+ # extract all enum definitions
+ awk '/^(typedef[[:space:]]*)?enum([[:space:]].*)?\{/,
+ /^\}([[:space:]].*)?;/' |
+ # pick out the constants we want
+ sed -Ene 's/^[[:space:]]*('"${grep}"')\>.*/TABLE_ENTRY(\1)/p'
+ fi
+cat <<_EOF_
+TABLE_END
+
+_EOF_
+}
+
cat <<_EOF_
/* This file is auto-generated. */
@@ -127,7 +154,7 @@
gen_table "schedpolicy" "SCHED_[A-Z]+[[:space:]]+[0-9]+" "sys/sched.h"
gen_table "sendfileflags" "SF_[A-Z]+[[:space:]]+[0-9]+" "sys/socket.h"
gen_table "shmatflags" "SHM_[A-Z]+[[:space:]]+[0-9]{6}" "sys/shm.h"
-gen_table "shutdownhow" "SHUT_[A-Z]+[[:space:]]+SHUT_[A-Z]+" "sys/socket.h"
+gen_table_enum "shutdownhow" "SHUT_[A-Z]+" "sys/socket.h"
gen_table "sigbuscode" "BUS_[A-Z]+[[:space:]]+[0-9]+" "sys/signal.h"
gen_table "sigchldcode" "CLD_[A-Z]+[[:space:]]+[0-9]+" "sys/signal.h"
gen_table "sigfpecode" "FPE_[A-Z]+[[:space:]]+[0-9]+" "sys/signal.h"

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