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libfdt: More tests of NOP handling behaviour

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In light of the recently discovered bug with NOP handling, this adds
some more testcases for NOP handling.  Specifically, it adds a helper
program which will add a NOP tag after every existing tag in a dtb,
and runs the standard battery of tests over trees mangled in this way.

For now, this does not add a NOP at the very beginning of the
structure block.  This causes problems for libfdt at present, because
we assume in many places that the root node's BEGIN_NODE tag is at
offset 0.  I'm still contemplating what to do about this (with one
option being simply to declare such dtbs invalid).

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
David Gibson 2008-02-18 16:09:25 +11:00 • committed by Jon Loeliger
parent d8b6942666
commit a90b5905fe
3 changed files with 115 additions and 1 deletions
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7
tests/run_tests.sh
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@ -125,6 +125,13 @@ libfdt_tests () {
tree1_tests rw_tree1.test.dtb
tree1_tests_rw rw_tree1.test.dtb
for basetree in test_tree1.dtb sw_tree1.test.dtb rw_tree1.test.dtb; do
run_test nopulate $basetree
run_test dtbs_equal_ordered $basetree noppy.$basetree
tree1_tests noppy.$basetree
tree1_tests_rw noppy.$basetree
done
# Tests for behaviour on various sorts of corrupted trees
run_test truncated_property