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This is the first of a 2-part patch set that fixes slow DSO sorting behavior in the dynamic loader, as reported in BZ #17645. In order to facilitate such a large modification to the dynamic loader, this first patch implements a testing framework for validating shared object sorting behavior, to enable comparison between old/new sorting algorithms, and any later enhancements. This testing infrastructure consists of a Python script scripts/dso-ordering-test.py' which takes in a description language, consisting of strings that describe a set of link dependency relations between DSOs, and generates testcase programs and Makefile fragments to automatically test the described situation, for example: a->b->c->d # four objects linked one after another a->[bc]->d;b->c # a depends on b and c, which both depend on d, # b depends on c (b,c linked to object a in fixed order) a->b->c;{+a;%a;-a} # a, b, c serially dependent, main program uses # dlopen/dlsym/dlclose on object a a->b->c;{}!->[abc] # a, b, c serially dependent; multiple tests generated # to test all permutations of a, b, c ordering linked # to main program (Above is just a short description of what the script can do, more documentation is in the script comments.) Two files containing several new tests, elf/dso-sort-tests-[12].def are added, including test scenarios for BZ #15311 and Redhat issue #1162810 [1]. Due to the nature of dynamic loader tests, where the sorting behavior and test output occurs before/after main(), generating testcases to use support/test-driver.c does not suffice to control meaningful timeout for ld.so. Therefore a new utility program 'support/test-run-command', based on test-driver.c/support_test_main.c has been added. This does the same testcase control, but for a program specified through a command-line rather than at the source code level. This utility is used to run the dynamic loader testcases generated by dso-ordering-test.py. [1] https://bugzilla.redhat.com/show_bug.cgi?id=1162810 Signed-off-by: Chung-Lin Tang <cltang@codesourcery.com> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> |
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| .. | ||
| abi-versions.awk | ||
| abilist.awk | ||
| backport-support.sh | ||
| build-many-glibcs.py | ||
| check-c++-types.sh | ||
| check-execstack.awk | ||
| check-initfini.awk | ||
| check-installed-headers.sh | ||
| check-local-headers.sh | ||
| check-localplt.awk | ||
| check-obsolete-constructs.py | ||
| check-textrel.awk | ||
| check-wrapper-headers.py | ||
| check-wx-segment.py | ||
| config-uname.sh | ||
| config.guess | ||
| config.sub | ||
| cpp | ||
| cross-test-ssh.sh | ||
| documented.sh | ||
| dso-ordering-test.py | ||
| evaluate-test.sh | ||
| firstversions.awk | ||
| gen-as-const.py | ||
| gen-libc-abis | ||
| gen-libc-modules.awk | ||
| gen-posix-conf-vars.awk | ||
| gen-rrtypes.py | ||
| gen-sorted.awk | ||
| gen-tunables.awk | ||
| glibc_shared_code.py | ||
| glibcextract.py | ||
| glibcsymbols.py | ||
| haveversions.awk | ||
| install-sh | ||
| lib-names.awk | ||
| list-fixed-bugs.py | ||
| list-sources.sh | ||
| localplt.awk | ||
| merge-test-results.sh | ||
| mkinstalldirs | ||
| move-if-change | ||
| move-symbol-to-libc.py | ||
| pylint | ||
| pylintrc | ||
| rellns-sh | ||
| soversions.awk | ||
| sysd-rules.awk | ||
| test_printers_common.py | ||
| test_printers_exceptions.py | ||
| test-installation.pl | ||
| update-abilist.sh | ||
| update-copyrights | ||
| vcstocl_quirks.py | ||
| versionlist.awk | ||
| versions.awk | ||