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authorH.J. Lu <hjl.tools@gmail.com>2024-01-09 12:23:26 -0800
committerH.J. Lu <hjl.tools@gmail.com>2024-01-10 05:20:16 -0800
commit7d544dd049a2e3f1480b668f51b72dcc89e376ab (patch)
tree9418b350bb32cc02b052b35159d6ac181787a4ba /sysdeps/x86_64
parenta1bbee9fd17a84d4b550f8405d5e4d31ff24f87d (diff)
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x86-64/cet: Move check-cet.awk to x86_64
Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
Diffstat (limited to 'sysdeps/x86_64')
-rw-r--r--sysdeps/x86_64/Makefile2
-rw-r--r--sysdeps/x86_64/check-cet.awk53
2 files changed, 54 insertions, 1 deletions
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index 98f0e04f90..e8babc9a4e 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -468,7 +468,7 @@ $(cet-built-dso:=.note): %.note: %
 	mv -f $@T $@
 common-generated += $(cet-built-dso:$(common-objpfx)%=%.note)
 
-$(objpfx)check-cet.out: $(..)sysdeps/x86/check-cet.awk \
+$(objpfx)check-cet.out: $(..)sysdeps/x86_64/check-cet.awk \
 			$(cet-built-dso:=.note)
 	LC_ALL=C $(AWK) -f $^ > $@; \
 	$(evaluate-test)
diff --git a/sysdeps/x86_64/check-cet.awk b/sysdeps/x86_64/check-cet.awk
new file mode 100644
index 0000000000..ede16bdf1d
--- /dev/null
+++ b/sysdeps/x86_64/check-cet.awk
@@ -0,0 +1,53 @@
+# Verify that all shared objects contain the CET property.
+# Copyright (C) 2018-2024 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+#
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# The GNU C Library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with the GNU C Library; if not, see
+# <https://www.gnu.org/licenses/>.
+
+# This awk script expects to get command-line files that are each
+# the output of 'readelf -n' on a single shared object.
+# It exits successfully (0) if all of them contained the CET property.
+# It fails (1) if any didn't contain the CET property
+# It fails (2) if the input did not take the expected form.
+
+BEGIN { result = cet = sanity = 0 }
+
+function check_one(name) {
+  if (!sanity) {
+    print name ": *** input did not look like readelf -n output";
+    result = 2;
+  } else if (cet) {
+    print name ": OK";
+  } else {
+    print name ": *** no CET property found";
+    result = result ? result : 1;
+  }
+
+  cet = sanity = 0;
+}
+
+FILENAME != lastfile {
+  if (lastfile)
+    check_one(lastfile);
+  lastfile = FILENAME;
+}
+
+index ($0, "Displaying notes") != 0 { sanity = 1 }
+index ($0, "IBT") != 0 && index ($0, "SHSTK") != 0 { cet = 1 }
+
+END {
+  check_one(lastfile);
+  exit(result);
+}