tests/libexec/ld.elf_so/t_r_rel: Make sure helper is compiled as PIE.

Otherwise this test doesn't work: the whole point is to check for
relative relocations, which are only used in position-independent
code.

Should fix the test on platforms that don't do PIE by default like
alpha and sparc64.

PR bin/59360: ld.elf_so(8): missing RELR support

tests/libexec/ld.elf_so/Makefile: Undo recent -Wl,-Map change.

This was almost certainly a mistake in a commit that was otherwise
entirely about omap4/pandaboard support:

https://mail-index.NetBSD.org/source-changes/2025/12/16/msg159556.html

The change added LDADD linker arguments of the form

-Wl,-Map foo.map

except that doesn't actually pass `-Map foo.map' through to the
underlying linker -- it only passes `-Map' to the linker, and then
treats `foo.map' as an extra input file for another object to link
(which doesn't work because the file doesn't exist). If we want to
keep this change (not sure why), then we would have to use

-Wl,-Map,foo.map

to actually pass `-Map foo.map' through to the underlying linker.

Should fix clang build failures:

aarch64--netbsd-clang: error: no such file or directory: 't_ifunc.map'
--- t_ifunc.link ---

*** Failed target: t_ifunc.link
*** In directory: /home/source/ab/HEAD-llvm/src/tests/libexec/ld.elf_so
*** Failed commands:
${_MKTARGET_LINK}
=> @# " link " ld.elf_so/t_ifunc.link
${_CCLINK.${:Ut_ifunc}} ${_LDFLAGS.${:Ut_ifunc}} ${_LDSTATIC.${:Ut_ifunc}} -o ${.TARGET} ${OBJS.${:Ut_ifunc}} ${_PROGLDOPTS} ${_LDADD.${:Ut_ifunc}}
=> /home/builds/ab/HEAD-llvm/evbarm-aarch64/20251217070550Z-tools/bin/aarch64--netbsd-clang --sysroot=/home/builds/ab/HEAD-llvm/evbarm-aarch64/20251217070550Z-dest -Wl,--fatal-warnings -Wl,--warn-shared-textrel -Wl,-z,relro -pie -o t_ifunc.link t_ifunc.o -Wl,-rpath-link,/home/builds/ab/HEAD-llvm/evbarm-aarch64/20251217070550Z-dest/lib -L=/lib -Wl,-z,relro -Wl,-Map t_ifunc.map -Wl,-rpath,/usr/tests/libexec/ld.elf_so -lutil -latf-c
${CTFMERGE} ${CTFMFLAGS} -o ${.TARGET} ${OBJS.${:Ut_ifunc}}
=> /home/builds/ab/HEAD-llvm/evbarm-aarch64/20251217070550Z-tools/bin/nbctfmerge -t -g -L VERSION -g -o t_ifunc.link t_ifunc.o
*** [t_ifunc.link] Error code 1

tests/lib/csu, tests/libexec/ld.elf_so: Apply CTFMERGE=: workaround.

The workaround for

PR toolchain/59364: ctf tools needs update

required an update after fixing

PR toolchain/57241: mips64el--netbsd-install core dumps randomly

by splitting the recipes for ${PROG} and ${PROG}.debug into an
intermediate ${PROG}.link to avoid overwriting ${PROG} inside the
recipe for ${PROG}.debug.

This is kludgey (writing the `.link' suffix into a Makefile isn't
great) but I see only two cases of it so this'll do for now.

Pandaboard work from Rui-Xiang Guo via port-arm with updates from me.

https://github.com/picohive/netbsd-pandaboard

dl_addr(3): Add some automatic tests.

XXX Should also test the libc stubs, maybe move this into
tests/lib/libc/dlfcn and test both static and (for MKPIC=yes)
dynamic, but this'll do for now.

PR lib/59567: dladdr(3) doesn't work properly especially when main
executable is loaded at high memory address

Add a testcase for PR/59652.

ld.elf_so(1): Test concurrent dlopen/dlclose.

PR lib/59751: dlclose is not MT-safe depending on the libraries
unloaded

branches: 1.28.2;
centralize pack-relative-relocs handling

ld.elf_so: Add a trivial test for R_*_RELATIVE relocations.

PR bin/59360: ld.elf_so(8): missing RELR support

tests/libexec/ld.elf_so/Makefile: Sort.

Preparation for:

PR bin/59360: ld.elf_so(8): missing RELR support

t_rtld_r_debug: Test this as a non-PIE executable too.

On MIPS, non-PIEs can use DT_MIPS_RLD_MAP or DT_MIPS_RLD_MAP_REL,
while PIEs can't use DT_MIPS_RLD_MAP because it relies on an absolute
virtual address baked into the file. So it's important to test both.

PR port-mips/59296: t_rtld_r_debug test is failing

tests/libexec/ld.elf_so/t_ifunc: Handle MKRELRO=no harder.

Don't even pass -Wl,-z,norelro if MKRELRO=no, because the toolchain's
ld(1) might not support relro _or_ norelro.

Should resolve, e.g.:

/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407182350Z-tools/bin/armv7--netbsdelf-eabihf-ld: warning: -z norelro ignored
armv7--netbsdelf-eabihf-clang: error: linker command failed with exit code 1 (use -v to see invocation)
--- t_ifunc_norelro ---
*** Failed target: t_ifunc_norelro
*** In directory: /home/source/ab/HEAD-llvm/src/tests/libexec/ld.elf_so
*** Failed commands:
${_MKTARGET_LINK}
...

tests/libexec/ld.elf_so/t_ifunc: Handle MKRELRO=no.

Just build t_ifunc and t_ifunc_now normally. If they wind up being
built with the same options as t_ifunc_norelro and
t_ifunc_norelro_now, so be it; easier to do it this way than to put
more conditionals into set lists.

Should resolve, e.g.:

/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-tools/bin/armv7--netbsdelf-eabihf-ld: warning: -z relro ignored
armv7--netbsdelf-eabihf-clang: error: linker command failed with exit code 1 (use -v to see invocation)
--- t_ifunc ---
*** Failed target: t_ifunc
*** In directory: /home/source/ab/HEAD-llvm/src/tests/libexec/ld.elf_so
*** Failed commands:
${_MKTARGET_LINK}
=> @# " link " ld.elf_so/t_ifunc
${_CCLINK.${:Ut_ifunc}} ${_LDFLAGS.${:Ut_ifunc}} ${_LDSTATIC.${:Ut_ifunc}} -o ${.TARGET} ${OBJS.${:Ut_ifunc}} ${_PROGLDOPTS} ${_LDADD.${:Ut_ifunc}}
=> /home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-tools/bin/armv7--netbsdelf-eabihf-clang --sysroot=/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-dest -Wl,--fatal-warnings -Wl,--warn-shared-textrel -pie -o t_ifunc t_ifunc.o -Wl,-rpath-link,/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-dest/lib -L=/lib -Wl,-z,relro -Wl,-rpath,/usr/tests/libexec/ld.elf_so -lutil -latf-c
${CTFMERGE} ${CTFMFLAGS} -o ${.TARGET} ${OBJS.${:Ut_ifunc}}
=> /home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-tools/bin/nbctfmerge -t -g -L VERSION -g -o t_ifunc t_ifunc.o

t_ifunc: Test with all combinations of {relro, bindnow}.

PR lib/57792

branches: 1.21.2;
ld.elf_so: Add some known-answer tests for hash functions.

Make sure the testing mechanism detects the traditional overflow bug.

adapt to ${CC_WNO_MAYBE_UNINITIALIZED}

Use ${CC_WNO_MAYBE_UNINITIALIZED} instead of
the older style more complex expressions.

Remove workarounds if they were for a specific
version of gcc < 10.

ld.elf_so: Test dynamic-then-static abuse via ctor.

XXX pullup-10

ld.elf_so: Test another edge case of mismatched TLS models.

One library defines a symbol and _doesn't_ use it, so it has no
indication of whether the symbol is for static TLS or dynamic TLS,
and then two other libraries use it in different ways.

XXX pullup-10

ld.elf_so: Test TLS abuse of static def, dynamic use and vice versa.

XXX pullup-10

ld.elf_so: Test extern dynamic TLS too.

XXX pullup-10

ld.elf_so: Nix inadvertently committed private test program.

ld.elf_so: Fix extern TLS test to match PR toolchain/50277.

Now it's actually testing the problem.

ld.elf_so: New test for extern initial-exec TLS, PR toolchain/50277.

XXX pullup-10

branches: 1.12.4;
Drop explicit -msecure-plt, it's the default for both clang and gcc.

branches: 1.11.2;
Add new RTLD test file for r_debug

New tests:
- self
- dlopen

Both check whether the r_debug structure seems to be well-formed, without
and with a dlopen(3) call.

branches: 1.10.2;
clang ifunc's on powerpc require secure-plt.

branches: 1.9.6;
Implement __cxa_thread_atexit and __cxa_thread_atexit_impl. This
functions are used for destructors of thread_local objects.

If a pending destructor exists, prevent unloading of shared objects.
Introduce __dl_cxa_refcount interface for this purpose. When the last
reference is gone and the object has been dlclose'd before, the
unloading is finalized.

Ideally, __cxa_thread_atexit_impl wouldn't exist, but libstdc++ insists
on providing __cxa_thread_atexit as direct wrapper without further
patching.

branches: 1.8.8;
Add basic support for indirect functions. It allows providing a public
function symbol with an implementation choosen at run time.
Refactor calls to functions by address in ld.elf_so to create temporary
function descriptors on the stack, if the address is not leaked outside.

Limitations:
- no support for initialising static storage with function pointers
- no support for unnamed resolver functions

Inspired by FreeBSD's r228435 by kib@freebsd.org.

avoid building stuff that depends upon pic objects if MKPIC == no.

only build the ld.elf_so tests if MKPIC != no.

PR/45015: ld.elf_so: support ELF symbol versioning
Applied latest patch.

Add initial regression test for ld.elf_so locking.

Add support for DF_1_BIND_NOW, DF_1_NODELETE and DF_1_NOOPEN marked
objects, and the RTLD_NODELETE and RTLD_NOLOAD flags to dlopen(3).

Mark libpthread as DF_1_NOOPEN and use it to test the functionality.

Somewhat taken from FreeBSD.

Fixes PR 42029.

OK from christos and joerg.

Convert a couple of old regress tests to ATF.

Remove the regress/usr.bin/rtld/dlopen/dlopen.c test as well as it's
covered by existing ATF test(s).

add regression tests for dlinfo()

tests/libexec/ld.elf_so/Makefile: Undo recent -Wl,-Map change.

This was almost certainly a mistake in a commit that was otherwise
entirely about omap4/pandaboard support:

https://mail-index.NetBSD.org/source-changes/2025/12/16/msg159556.html

The change added LDADD linker arguments of the form

-Wl,-Map foo.map

except that doesn't actually pass `-Map foo.map' through to the
underlying linker -- it only passes `-Map' to the linker, and then
treats `foo.map' as an extra input file for another object to link
(which doesn't work because the file doesn't exist). If we want to
keep this change (not sure why), then we would have to use

-Wl,-Map,foo.map

to actually pass `-Map foo.map' through to the underlying linker.

Should fix clang build failures:

aarch64--netbsd-clang: error: no such file or directory: 't_ifunc.map'
--- t_ifunc.link ---

*** Failed target: t_ifunc.link
*** In directory: /home/source/ab/HEAD-llvm/src/tests/libexec/ld.elf_so
*** Failed commands:
${_MKTARGET_LINK}
=> @# " link " ld.elf_so/t_ifunc.link
${_CCLINK.${:Ut_ifunc}} ${_LDFLAGS.${:Ut_ifunc}} ${_LDSTATIC.${:Ut_ifunc}} -o ${.TARGET} ${OBJS.${:Ut_ifunc}} ${_PROGLDOPTS} ${_LDADD.${:Ut_ifunc}}
=> /home/builds/ab/HEAD-llvm/evbarm-aarch64/20251217070550Z-tools/bin/aarch64--netbsd-clang --sysroot=/home/builds/ab/HEAD-llvm/evbarm-aarch64/20251217070550Z-dest -Wl,--fatal-warnings -Wl,--warn-shared-textrel -Wl,-z,relro -pie -o t_ifunc.link t_ifunc.o -Wl,-rpath-link,/home/builds/ab/HEAD-llvm/evbarm-aarch64/20251217070550Z-dest/lib -L=/lib -Wl,-z,relro -Wl,-Map t_ifunc.map -Wl,-rpath,/usr/tests/libexec/ld.elf_so -lutil -latf-c
${CTFMERGE} ${CTFMFLAGS} -o ${.TARGET} ${OBJS.${:Ut_ifunc}}
=> /home/builds/ab/HEAD-llvm/evbarm-aarch64/20251217070550Z-tools/bin/nbctfmerge -t -g -L VERSION -g -o t_ifunc.link t_ifunc.o
*** [t_ifunc.link] Error code 1

tests/lib/csu, tests/libexec/ld.elf_so: Apply CTFMERGE=: workaround.

The workaround for

PR toolchain/59364: ctf tools needs update

required an update after fixing

PR toolchain/57241: mips64el--netbsd-install core dumps randomly

by splitting the recipes for ${PROG} and ${PROG}.debug into an
intermediate ${PROG}.link to avoid overwriting ${PROG} inside the
recipe for ${PROG}.debug.

This is kludgey (writing the `.link' suffix into a Makefile isn't
great) but I see only two cases of it so this'll do for now.

Pandaboard work from Rui-Xiang Guo via port-arm with updates from me.

https://github.com/picohive/netbsd-pandaboard

dl_addr(3): Add some automatic tests.

XXX Should also test the libc stubs, maybe move this into
tests/lib/libc/dlfcn and test both static and (for MKPIC=yes)
dynamic, but this'll do for now.

PR lib/59567: dladdr(3) doesn't work properly especially when main
executable is loaded at high memory address

Add a testcase for PR/59652.

ld.elf_so(1): Test concurrent dlopen/dlclose.

PR lib/59751: dlclose is not MT-safe depending on the libraries
unloaded

centralize pack-relative-relocs handling

ld.elf_so: Add a trivial test for R_*_RELATIVE relocations.

PR bin/59360: ld.elf_so(8): missing RELR support

tests/libexec/ld.elf_so/Makefile: Sort.

Preparation for:

PR bin/59360: ld.elf_so(8): missing RELR support

t_rtld_r_debug: Test this as a non-PIE executable too.

On MIPS, non-PIEs can use DT_MIPS_RLD_MAP or DT_MIPS_RLD_MAP_REL,
while PIEs can't use DT_MIPS_RLD_MAP because it relies on an absolute
virtual address baked into the file. So it's important to test both.

PR port-mips/59296: t_rtld_r_debug test is failing

tests/libexec/ld.elf_so/t_ifunc: Handle MKRELRO=no harder.

Don't even pass -Wl,-z,norelro if MKRELRO=no, because the toolchain's
ld(1) might not support relro _or_ norelro.

Should resolve, e.g.:

/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407182350Z-tools/bin/armv7--netbsdelf-eabihf-ld: warning: -z norelro ignored
armv7--netbsdelf-eabihf-clang: error: linker command failed with exit code 1 (use -v to see invocation)
--- t_ifunc_norelro ---
*** Failed target: t_ifunc_norelro
*** In directory: /home/source/ab/HEAD-llvm/src/tests/libexec/ld.elf_so
*** Failed commands:
${_MKTARGET_LINK}
...

tests/libexec/ld.elf_so/t_ifunc: Handle MKRELRO=no.

Just build t_ifunc and t_ifunc_now normally. If they wind up being
built with the same options as t_ifunc_norelro and
t_ifunc_norelro_now, so be it; easier to do it this way than to put
more conditionals into set lists.

Should resolve, e.g.:

/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-tools/bin/armv7--netbsdelf-eabihf-ld: warning: -z relro ignored
armv7--netbsdelf-eabihf-clang: error: linker command failed with exit code 1 (use -v to see invocation)
--- t_ifunc ---
*** Failed target: t_ifunc
*** In directory: /home/source/ab/HEAD-llvm/src/tests/libexec/ld.elf_so
*** Failed commands:
${_MKTARGET_LINK}
=> @# " link " ld.elf_so/t_ifunc
${_CCLINK.${:Ut_ifunc}} ${_LDFLAGS.${:Ut_ifunc}} ${_LDSTATIC.${:Ut_ifunc}} -o ${.TARGET} ${OBJS.${:Ut_ifunc}} ${_PROGLDOPTS} ${_LDADD.${:Ut_ifunc}}
=> /home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-tools/bin/armv7--netbsdelf-eabihf-clang --sysroot=/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-dest -Wl,--fatal-warnings -Wl,--warn-shared-textrel -pie -o t_ifunc t_ifunc.o -Wl,-rpath-link,/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-dest/lib -L=/lib -Wl,-z,relro -Wl,-rpath,/usr/tests/libexec/ld.elf_so -lutil -latf-c
${CTFMERGE} ${CTFMFLAGS} -o ${.TARGET} ${OBJS.${:Ut_ifunc}}
=> /home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-tools/bin/nbctfmerge -t -g -L VERSION -g -o t_ifunc t_ifunc.o

t_ifunc: Test with all combinations of {relro, bindnow}.

PR lib/57792

branches: 1.21.2;
ld.elf_so: Add some known-answer tests for hash functions.

Make sure the testing mechanism detects the traditional overflow bug.

adapt to ${CC_WNO_MAYBE_UNINITIALIZED}

Use ${CC_WNO_MAYBE_UNINITIALIZED} instead of
the older style more complex expressions.

Remove workarounds if they were for a specific
version of gcc < 10.

ld.elf_so: Test dynamic-then-static abuse via ctor.

XXX pullup-10

ld.elf_so: Test another edge case of mismatched TLS models.

One library defines a symbol and _doesn't_ use it, so it has no
indication of whether the symbol is for static TLS or dynamic TLS,
and then two other libraries use it in different ways.

XXX pullup-10

ld.elf_so: Test TLS abuse of static def, dynamic use and vice versa.

XXX pullup-10

ld.elf_so: Test extern dynamic TLS too.

XXX pullup-10

ld.elf_so: Nix inadvertently committed private test program.

ld.elf_so: Fix extern TLS test to match PR toolchain/50277.

Now it's actually testing the problem.

ld.elf_so: New test for extern initial-exec TLS, PR toolchain/50277.

XXX pullup-10

branches: 1.12.4;
Drop explicit -msecure-plt, it's the default for both clang and gcc.

branches: 1.11.2;
Add new RTLD test file for r_debug

New tests:
- self
- dlopen

Both check whether the r_debug structure seems to be well-formed, without
and with a dlopen(3) call.

branches: 1.10.2;
clang ifunc's on powerpc require secure-plt.

branches: 1.9.6;
Implement __cxa_thread_atexit and __cxa_thread_atexit_impl. This
functions are used for destructors of thread_local objects.

If a pending destructor exists, prevent unloading of shared objects.
Introduce __dl_cxa_refcount interface for this purpose. When the last
reference is gone and the object has been dlclose'd before, the
unloading is finalized.

Ideally, __cxa_thread_atexit_impl wouldn't exist, but libstdc++ insists
on providing __cxa_thread_atexit as direct wrapper without further
patching.

branches: 1.8.8;
Add basic support for indirect functions. It allows providing a public
function symbol with an implementation choosen at run time.
Refactor calls to functions by address in ld.elf_so to create temporary
function descriptors on the stack, if the address is not leaked outside.

Limitations:
- no support for initialising static storage with function pointers
- no support for unnamed resolver functions

Inspired by FreeBSD's r228435 by kib@freebsd.org.

avoid building stuff that depends upon pic objects if MKPIC == no.

only build the ld.elf_so tests if MKPIC != no.

PR/45015: ld.elf_so: support ELF symbol versioning
Applied latest patch.

Add initial regression test for ld.elf_so locking.

Add support for DF_1_BIND_NOW, DF_1_NODELETE and DF_1_NOOPEN marked
objects, and the RTLD_NODELETE and RTLD_NOLOAD flags to dlopen(3).

Mark libpthread as DF_1_NOOPEN and use it to test the functionality.

Somewhat taken from FreeBSD.

Fixes PR 42029.

OK from christos and joerg.

Convert a couple of old regress tests to ATF.

Remove the regress/usr.bin/rtld/dlopen/dlopen.c test as well as it's
covered by existing ATF test(s).

add regression tests for dlinfo()

tests/lib/csu, tests/libexec/ld.elf_so: Apply CTFMERGE=: workaround.

The workaround for

PR toolchain/59364: ctf tools needs update

required an update after fixing

PR toolchain/57241: mips64el--netbsd-install core dumps randomly

by splitting the recipes for ${PROG} and ${PROG}.debug into an
intermediate ${PROG}.link to avoid overwriting ${PROG} inside the
recipe for ${PROG}.debug.

This is kludgey (writing the `.link' suffix into a Makefile isn't
great) but I see only two cases of it so this'll do for now.

Pandaboard work from Rui-Xiang Guo via port-arm with updates from me.

https://github.com/picohive/netbsd-pandaboard

dl_addr(3): Add some automatic tests.

XXX Should also test the libc stubs, maybe move this into
tests/lib/libc/dlfcn and test both static and (for MKPIC=yes)
dynamic, but this'll do for now.

PR lib/59567: dladdr(3) doesn't work properly especially when main
executable is loaded at high memory address

Add a testcase for PR/59652.

ld.elf_so(1): Test concurrent dlopen/dlclose.

PR lib/59751: dlclose is not MT-safe depending on the libraries
unloaded

centralize pack-relative-relocs handling

ld.elf_so: Add a trivial test for R_*_RELATIVE relocations.

PR bin/59360: ld.elf_so(8): missing RELR support

tests/libexec/ld.elf_so/Makefile: Sort.

Preparation for:

PR bin/59360: ld.elf_so(8): missing RELR support

t_rtld_r_debug: Test this as a non-PIE executable too.

On MIPS, non-PIEs can use DT_MIPS_RLD_MAP or DT_MIPS_RLD_MAP_REL,
while PIEs can't use DT_MIPS_RLD_MAP because it relies on an absolute
virtual address baked into the file. So it's important to test both.

PR port-mips/59296: t_rtld_r_debug test is failing

tests/libexec/ld.elf_so/t_ifunc: Handle MKRELRO=no harder.

Don't even pass -Wl,-z,norelro if MKRELRO=no, because the toolchain's
ld(1) might not support relro _or_ norelro.

Should resolve, e.g.:

/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407182350Z-tools/bin/armv7--netbsdelf-eabihf-ld: warning: -z norelro ignored
armv7--netbsdelf-eabihf-clang: error: linker command failed with exit code 1 (use -v to see invocation)
--- t_ifunc_norelro ---
*** Failed target: t_ifunc_norelro
*** In directory: /home/source/ab/HEAD-llvm/src/tests/libexec/ld.elf_so
*** Failed commands:
${_MKTARGET_LINK}
...

tests/libexec/ld.elf_so/t_ifunc: Handle MKRELRO=no.

Just build t_ifunc and t_ifunc_now normally. If they wind up being
built with the same options as t_ifunc_norelro and
t_ifunc_norelro_now, so be it; easier to do it this way than to put
more conditionals into set lists.

Should resolve, e.g.:

/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-tools/bin/armv7--netbsdelf-eabihf-ld: warning: -z relro ignored
armv7--netbsdelf-eabihf-clang: error: linker command failed with exit code 1 (use -v to see invocation)
--- t_ifunc ---
*** Failed target: t_ifunc
*** In directory: /home/source/ab/HEAD-llvm/src/tests/libexec/ld.elf_so
*** Failed commands:
${_MKTARGET_LINK}
=> @# " link " ld.elf_so/t_ifunc
${_CCLINK.${:Ut_ifunc}} ${_LDFLAGS.${:Ut_ifunc}} ${_LDSTATIC.${:Ut_ifunc}} -o ${.TARGET} ${OBJS.${:Ut_ifunc}} ${_PROGLDOPTS} ${_LDADD.${:Ut_ifunc}}
=> /home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-tools/bin/armv7--netbsdelf-eabihf-clang --sysroot=/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-dest -Wl,--fatal-warnings -Wl,--warn-shared-textrel -pie -o t_ifunc t_ifunc.o -Wl,-rpath-link,/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-dest/lib -L=/lib -Wl,-z,relro -Wl,-rpath,/usr/tests/libexec/ld.elf_so -lutil -latf-c
${CTFMERGE} ${CTFMFLAGS} -o ${.TARGET} ${OBJS.${:Ut_ifunc}}
=> /home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-tools/bin/nbctfmerge -t -g -L VERSION -g -o t_ifunc t_ifunc.o

t_ifunc: Test with all combinations of {relro, bindnow}.

PR lib/57792

branches: 1.21.2;
ld.elf_so: Add some known-answer tests for hash functions.

Make sure the testing mechanism detects the traditional overflow bug.

adapt to ${CC_WNO_MAYBE_UNINITIALIZED}

Use ${CC_WNO_MAYBE_UNINITIALIZED} instead of
the older style more complex expressions.

Remove workarounds if they were for a specific
version of gcc < 10.

ld.elf_so: Test dynamic-then-static abuse via ctor.

XXX pullup-10

ld.elf_so: Test another edge case of mismatched TLS models.

One library defines a symbol and _doesn't_ use it, so it has no
indication of whether the symbol is for static TLS or dynamic TLS,
and then two other libraries use it in different ways.

XXX pullup-10

ld.elf_so: Test TLS abuse of static def, dynamic use and vice versa.

XXX pullup-10

ld.elf_so: Test extern dynamic TLS too.

XXX pullup-10

ld.elf_so: Nix inadvertently committed private test program.

ld.elf_so: Fix extern TLS test to match PR toolchain/50277.

Now it's actually testing the problem.

ld.elf_so: New test for extern initial-exec TLS, PR toolchain/50277.

XXX pullup-10

branches: 1.12.4;
Drop explicit -msecure-plt, it's the default for both clang and gcc.

branches: 1.11.2;
Add new RTLD test file for r_debug

New tests:
- self
- dlopen

Both check whether the r_debug structure seems to be well-formed, without
and with a dlopen(3) call.

branches: 1.10.2;
clang ifunc's on powerpc require secure-plt.

branches: 1.9.6;
Implement __cxa_thread_atexit and __cxa_thread_atexit_impl. This
functions are used for destructors of thread_local objects.

If a pending destructor exists, prevent unloading of shared objects.
Introduce __dl_cxa_refcount interface for this purpose. When the last
reference is gone and the object has been dlclose'd before, the
unloading is finalized.

Ideally, __cxa_thread_atexit_impl wouldn't exist, but libstdc++ insists
on providing __cxa_thread_atexit as direct wrapper without further
patching.

branches: 1.8.8;
Add basic support for indirect functions. It allows providing a public
function symbol with an implementation choosen at run time.
Refactor calls to functions by address in ld.elf_so to create temporary
function descriptors on the stack, if the address is not leaked outside.

Limitations:
- no support for initialising static storage with function pointers
- no support for unnamed resolver functions

Inspired by FreeBSD's r228435 by kib@freebsd.org.

avoid building stuff that depends upon pic objects if MKPIC == no.

only build the ld.elf_so tests if MKPIC != no.

PR/45015: ld.elf_so: support ELF symbol versioning
Applied latest patch.

Add initial regression test for ld.elf_so locking.

Add support for DF_1_BIND_NOW, DF_1_NODELETE and DF_1_NOOPEN marked
objects, and the RTLD_NODELETE and RTLD_NOLOAD flags to dlopen(3).

Mark libpthread as DF_1_NOOPEN and use it to test the functionality.

Somewhat taken from FreeBSD.

Fixes PR 42029.

OK from christos and joerg.

Convert a couple of old regress tests to ATF.

Remove the regress/usr.bin/rtld/dlopen/dlopen.c test as well as it's
covered by existing ATF test(s).

add regression tests for dlinfo()

Pandaboard work from Rui-Xiang Guo via port-arm with updates from me.

https://github.com/picohive/netbsd-pandaboard

dl_addr(3): Add some automatic tests.

XXX Should also test the libc stubs, maybe move this into
tests/lib/libc/dlfcn and test both static and (for MKPIC=yes)
dynamic, but this'll do for now.

PR lib/59567: dladdr(3) doesn't work properly especially when main
executable is loaded at high memory address

Add a testcase for PR/59652.

ld.elf_so(1): Test concurrent dlopen/dlclose.

PR lib/59751: dlclose is not MT-safe depending on the libraries
unloaded

centralize pack-relative-relocs handling

ld.elf_so: Add a trivial test for R_*_RELATIVE relocations.

PR bin/59360: ld.elf_so(8): missing RELR support

tests/libexec/ld.elf_so/Makefile: Sort.

Preparation for:

PR bin/59360: ld.elf_so(8): missing RELR support

t_rtld_r_debug: Test this as a non-PIE executable too.

On MIPS, non-PIEs can use DT_MIPS_RLD_MAP or DT_MIPS_RLD_MAP_REL,
while PIEs can't use DT_MIPS_RLD_MAP because it relies on an absolute
virtual address baked into the file. So it's important to test both.

PR port-mips/59296: t_rtld_r_debug test is failing

tests/libexec/ld.elf_so/t_ifunc: Handle MKRELRO=no harder.

Don't even pass -Wl,-z,norelro if MKRELRO=no, because the toolchain's
ld(1) might not support relro _or_ norelro.

Should resolve, e.g.:

/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407182350Z-tools/bin/armv7--netbsdelf-eabihf-ld: warning: -z norelro ignored
armv7--netbsdelf-eabihf-clang: error: linker command failed with exit code 1 (use -v to see invocation)
--- t_ifunc_norelro ---
*** Failed target: t_ifunc_norelro
*** In directory: /home/source/ab/HEAD-llvm/src/tests/libexec/ld.elf_so
*** Failed commands:
${_MKTARGET_LINK}
...

tests/libexec/ld.elf_so/t_ifunc: Handle MKRELRO=no.

Just build t_ifunc and t_ifunc_now normally. If they wind up being
built with the same options as t_ifunc_norelro and
t_ifunc_norelro_now, so be it; easier to do it this way than to put
more conditionals into set lists.

Should resolve, e.g.:

/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-tools/bin/armv7--netbsdelf-eabihf-ld: warning: -z relro ignored
armv7--netbsdelf-eabihf-clang: error: linker command failed with exit code 1 (use -v to see invocation)
--- t_ifunc ---
*** Failed target: t_ifunc
*** In directory: /home/source/ab/HEAD-llvm/src/tests/libexec/ld.elf_so
*** Failed commands:
${_MKTARGET_LINK}
=> @# " link " ld.elf_so/t_ifunc
${_CCLINK.${:Ut_ifunc}} ${_LDFLAGS.${:Ut_ifunc}} ${_LDSTATIC.${:Ut_ifunc}} -o ${.TARGET} ${OBJS.${:Ut_ifunc}} ${_PROGLDOPTS} ${_LDADD.${:Ut_ifunc}}
=> /home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-tools/bin/armv7--netbsdelf-eabihf-clang --sysroot=/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-dest -Wl,--fatal-warnings -Wl,--warn-shared-textrel -pie -o t_ifunc t_ifunc.o -Wl,-rpath-link,/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-dest/lib -L=/lib -Wl,-z,relro -Wl,-rpath,/usr/tests/libexec/ld.elf_so -lutil -latf-c
${CTFMERGE} ${CTFMFLAGS} -o ${.TARGET} ${OBJS.${:Ut_ifunc}}
=> /home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-tools/bin/nbctfmerge -t -g -L VERSION -g -o t_ifunc t_ifunc.o

t_ifunc: Test with all combinations of {relro, bindnow}.

PR lib/57792

branches: 1.21.2;
ld.elf_so: Add some known-answer tests for hash functions.

Make sure the testing mechanism detects the traditional overflow bug.

adapt to ${CC_WNO_MAYBE_UNINITIALIZED}

Use ${CC_WNO_MAYBE_UNINITIALIZED} instead of
the older style more complex expressions.

Remove workarounds if they were for a specific
version of gcc < 10.

ld.elf_so: Test dynamic-then-static abuse via ctor.

XXX pullup-10

ld.elf_so: Test another edge case of mismatched TLS models.

One library defines a symbol and _doesn't_ use it, so it has no
indication of whether the symbol is for static TLS or dynamic TLS,
and then two other libraries use it in different ways.

XXX pullup-10

ld.elf_so: Test TLS abuse of static def, dynamic use and vice versa.

XXX pullup-10

ld.elf_so: Test extern dynamic TLS too.

XXX pullup-10

ld.elf_so: Nix inadvertently committed private test program.

ld.elf_so: Fix extern TLS test to match PR toolchain/50277.

Now it's actually testing the problem.

ld.elf_so: New test for extern initial-exec TLS, PR toolchain/50277.

XXX pullup-10

branches: 1.12.4;
Drop explicit -msecure-plt, it's the default for both clang and gcc.

branches: 1.11.2;
Add new RTLD test file for r_debug

New tests:
- self
- dlopen

Both check whether the r_debug structure seems to be well-formed, without
and with a dlopen(3) call.

branches: 1.10.2;
clang ifunc's on powerpc require secure-plt.

branches: 1.9.6;
Implement __cxa_thread_atexit and __cxa_thread_atexit_impl. This
functions are used for destructors of thread_local objects.

If a pending destructor exists, prevent unloading of shared objects.
Introduce __dl_cxa_refcount interface for this purpose. When the last
reference is gone and the object has been dlclose'd before, the
unloading is finalized.

Ideally, __cxa_thread_atexit_impl wouldn't exist, but libstdc++ insists
on providing __cxa_thread_atexit as direct wrapper without further
patching.

branches: 1.8.8;
Add basic support for indirect functions. It allows providing a public
function symbol with an implementation choosen at run time.
Refactor calls to functions by address in ld.elf_so to create temporary
function descriptors on the stack, if the address is not leaked outside.

Limitations:
- no support for initialising static storage with function pointers
- no support for unnamed resolver functions

Inspired by FreeBSD's r228435 by kib@freebsd.org.

avoid building stuff that depends upon pic objects if MKPIC == no.

only build the ld.elf_so tests if MKPIC != no.

PR/45015: ld.elf_so: support ELF symbol versioning
Applied latest patch.

Add initial regression test for ld.elf_so locking.

Add support for DF_1_BIND_NOW, DF_1_NODELETE and DF_1_NOOPEN marked
objects, and the RTLD_NODELETE and RTLD_NOLOAD flags to dlopen(3).

Mark libpthread as DF_1_NOOPEN and use it to test the functionality.

Somewhat taken from FreeBSD.

Fixes PR 42029.

OK from christos and joerg.

Convert a couple of old regress tests to ATF.

Remove the regress/usr.bin/rtld/dlopen/dlopen.c test as well as it's
covered by existing ATF test(s).

add regression tests for dlinfo()

dl_addr(3): Add some automatic tests.

XXX Should also test the libc stubs, maybe move this into
tests/lib/libc/dlfcn and test both static and (for MKPIC=yes)
dynamic, but this'll do for now.

PR lib/59567: dladdr(3) doesn't work properly especially when main
executable is loaded at high memory address

Add a testcase for PR/59652.

ld.elf_so(1): Test concurrent dlopen/dlclose.

PR lib/59751: dlclose is not MT-safe depending on the libraries
unloaded

centralize pack-relative-relocs handling

ld.elf_so: Add a trivial test for R_*_RELATIVE relocations.

PR bin/59360: ld.elf_so(8): missing RELR support

tests/libexec/ld.elf_so/Makefile: Sort.

Preparation for:

PR bin/59360: ld.elf_so(8): missing RELR support

t_rtld_r_debug: Test this as a non-PIE executable too.

On MIPS, non-PIEs can use DT_MIPS_RLD_MAP or DT_MIPS_RLD_MAP_REL,
while PIEs can't use DT_MIPS_RLD_MAP because it relies on an absolute
virtual address baked into the file. So it's important to test both.

PR port-mips/59296: t_rtld_r_debug test is failing

tests/libexec/ld.elf_so/t_ifunc: Handle MKRELRO=no harder.

Don't even pass -Wl,-z,norelro if MKRELRO=no, because the toolchain's
ld(1) might not support relro _or_ norelro.

Should resolve, e.g.:

/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407182350Z-tools/bin/armv7--netbsdelf-eabihf-ld: warning: -z norelro ignored
armv7--netbsdelf-eabihf-clang: error: linker command failed with exit code 1 (use -v to see invocation)
--- t_ifunc_norelro ---
*** Failed target: t_ifunc_norelro
*** In directory: /home/source/ab/HEAD-llvm/src/tests/libexec/ld.elf_so
*** Failed commands:
${_MKTARGET_LINK}
...

tests/libexec/ld.elf_so/t_ifunc: Handle MKRELRO=no.

Just build t_ifunc and t_ifunc_now normally. If they wind up being
built with the same options as t_ifunc_norelro and
t_ifunc_norelro_now, so be it; easier to do it this way than to put
more conditionals into set lists.

Should resolve, e.g.:

/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-tools/bin/armv7--netbsdelf-eabihf-ld: warning: -z relro ignored
armv7--netbsdelf-eabihf-clang: error: linker command failed with exit code 1 (use -v to see invocation)
--- t_ifunc ---
*** Failed target: t_ifunc
*** In directory: /home/source/ab/HEAD-llvm/src/tests/libexec/ld.elf_so
*** Failed commands:
${_MKTARGET_LINK}
=> @# " link " ld.elf_so/t_ifunc
${_CCLINK.${:Ut_ifunc}} ${_LDFLAGS.${:Ut_ifunc}} ${_LDSTATIC.${:Ut_ifunc}} -o ${.TARGET} ${OBJS.${:Ut_ifunc}} ${_PROGLDOPTS} ${_LDADD.${:Ut_ifunc}}
=> /home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-tools/bin/armv7--netbsdelf-eabihf-clang --sysroot=/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-dest -Wl,--fatal-warnings -Wl,--warn-shared-textrel -pie -o t_ifunc t_ifunc.o -Wl,-rpath-link,/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-dest/lib -L=/lib -Wl,-z,relro -Wl,-rpath,/usr/tests/libexec/ld.elf_so -lutil -latf-c
${CTFMERGE} ${CTFMFLAGS} -o ${.TARGET} ${OBJS.${:Ut_ifunc}}
=> /home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-tools/bin/nbctfmerge -t -g -L VERSION -g -o t_ifunc t_ifunc.o

t_ifunc: Test with all combinations of {relro, bindnow}.

PR lib/57792

branches: 1.21.2;
ld.elf_so: Add some known-answer tests for hash functions.

Make sure the testing mechanism detects the traditional overflow bug.

adapt to ${CC_WNO_MAYBE_UNINITIALIZED}

Use ${CC_WNO_MAYBE_UNINITIALIZED} instead of
the older style more complex expressions.

Remove workarounds if they were for a specific
version of gcc < 10.

ld.elf_so: Test dynamic-then-static abuse via ctor.

XXX pullup-10

ld.elf_so: Test another edge case of mismatched TLS models.

One library defines a symbol and _doesn't_ use it, so it has no
indication of whether the symbol is for static TLS or dynamic TLS,
and then two other libraries use it in different ways.

XXX pullup-10

ld.elf_so: Test TLS abuse of static def, dynamic use and vice versa.

XXX pullup-10

ld.elf_so: Test extern dynamic TLS too.

XXX pullup-10

ld.elf_so: Nix inadvertently committed private test program.

ld.elf_so: Fix extern TLS test to match PR toolchain/50277.

Now it's actually testing the problem.

ld.elf_so: New test for extern initial-exec TLS, PR toolchain/50277.

XXX pullup-10

branches: 1.12.4;
Drop explicit -msecure-plt, it's the default for both clang and gcc.

branches: 1.11.2;
Add new RTLD test file for r_debug

New tests:
- self
- dlopen

Both check whether the r_debug structure seems to be well-formed, without
and with a dlopen(3) call.

branches: 1.10.2;
clang ifunc's on powerpc require secure-plt.

branches: 1.9.6;
Implement __cxa_thread_atexit and __cxa_thread_atexit_impl. This
functions are used for destructors of thread_local objects.

If a pending destructor exists, prevent unloading of shared objects.
Introduce __dl_cxa_refcount interface for this purpose. When the last
reference is gone and the object has been dlclose'd before, the
unloading is finalized.

Ideally, __cxa_thread_atexit_impl wouldn't exist, but libstdc++ insists
on providing __cxa_thread_atexit as direct wrapper without further
patching.

branches: 1.8.8;
Add basic support for indirect functions. It allows providing a public
function symbol with an implementation choosen at run time.
Refactor calls to functions by address in ld.elf_so to create temporary
function descriptors on the stack, if the address is not leaked outside.

Limitations:
- no support for initialising static storage with function pointers
- no support for unnamed resolver functions

Inspired by FreeBSD's r228435 by kib@freebsd.org.

avoid building stuff that depends upon pic objects if MKPIC == no.

only build the ld.elf_so tests if MKPIC != no.

PR/45015: ld.elf_so: support ELF symbol versioning
Applied latest patch.

Add initial regression test for ld.elf_so locking.

Add support for DF_1_BIND_NOW, DF_1_NODELETE and DF_1_NOOPEN marked
objects, and the RTLD_NODELETE and RTLD_NOLOAD flags to dlopen(3).

Mark libpthread as DF_1_NOOPEN and use it to test the functionality.

Somewhat taken from FreeBSD.

Fixes PR 42029.

OK from christos and joerg.

Convert a couple of old regress tests to ATF.

Remove the regress/usr.bin/rtld/dlopen/dlopen.c test as well as it's
covered by existing ATF test(s).

add regression tests for dlinfo()

Add a testcase for PR/59652.

ld.elf_so(1): Test concurrent dlopen/dlclose.

PR lib/59751: dlclose is not MT-safe depending on the libraries
unloaded

centralize pack-relative-relocs handling

ld.elf_so: Add a trivial test for R_*_RELATIVE relocations.

PR bin/59360: ld.elf_so(8): missing RELR support

tests/libexec/ld.elf_so/Makefile: Sort.

Preparation for:

PR bin/59360: ld.elf_so(8): missing RELR support

t_rtld_r_debug: Test this as a non-PIE executable too.

On MIPS, non-PIEs can use DT_MIPS_RLD_MAP or DT_MIPS_RLD_MAP_REL,
while PIEs can't use DT_MIPS_RLD_MAP because it relies on an absolute
virtual address baked into the file. So it's important to test both.

PR port-mips/59296: t_rtld_r_debug test is failing

tests/libexec/ld.elf_so/t_ifunc: Handle MKRELRO=no harder.

Don't even pass -Wl,-z,norelro if MKRELRO=no, because the toolchain's
ld(1) might not support relro _or_ norelro.

Should resolve, e.g.:

/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407182350Z-tools/bin/armv7--netbsdelf-eabihf-ld: warning: -z norelro ignored
armv7--netbsdelf-eabihf-clang: error: linker command failed with exit code 1 (use -v to see invocation)
--- t_ifunc_norelro ---
*** Failed target: t_ifunc_norelro
*** In directory: /home/source/ab/HEAD-llvm/src/tests/libexec/ld.elf_so
*** Failed commands:
${_MKTARGET_LINK}
...

tests/libexec/ld.elf_so/t_ifunc: Handle MKRELRO=no.

Just build t_ifunc and t_ifunc_now normally. If they wind up being
built with the same options as t_ifunc_norelro and
t_ifunc_norelro_now, so be it; easier to do it this way than to put
more conditionals into set lists.

Should resolve, e.g.:

/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-tools/bin/armv7--netbsdelf-eabihf-ld: warning: -z relro ignored
armv7--netbsdelf-eabihf-clang: error: linker command failed with exit code 1 (use -v to see invocation)
--- t_ifunc ---
*** Failed target: t_ifunc
*** In directory: /home/source/ab/HEAD-llvm/src/tests/libexec/ld.elf_so
*** Failed commands:
${_MKTARGET_LINK}
=> @# " link " ld.elf_so/t_ifunc
${_CCLINK.${:Ut_ifunc}} ${_LDFLAGS.${:Ut_ifunc}} ${_LDSTATIC.${:Ut_ifunc}} -o ${.TARGET} ${OBJS.${:Ut_ifunc}} ${_PROGLDOPTS} ${_LDADD.${:Ut_ifunc}}
=> /home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-tools/bin/armv7--netbsdelf-eabihf-clang --sysroot=/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-dest -Wl,--fatal-warnings -Wl,--warn-shared-textrel -pie -o t_ifunc t_ifunc.o -Wl,-rpath-link,/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-dest/lib -L=/lib -Wl,-z,relro -Wl,-rpath,/usr/tests/libexec/ld.elf_so -lutil -latf-c
${CTFMERGE} ${CTFMFLAGS} -o ${.TARGET} ${OBJS.${:Ut_ifunc}}
=> /home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-tools/bin/nbctfmerge -t -g -L VERSION -g -o t_ifunc t_ifunc.o

t_ifunc: Test with all combinations of {relro, bindnow}.

PR lib/57792

branches: 1.21.2;
ld.elf_so: Add some known-answer tests for hash functions.

Make sure the testing mechanism detects the traditional overflow bug.

adapt to ${CC_WNO_MAYBE_UNINITIALIZED}

Use ${CC_WNO_MAYBE_UNINITIALIZED} instead of
the older style more complex expressions.

Remove workarounds if they were for a specific
version of gcc < 10.

ld.elf_so: Test dynamic-then-static abuse via ctor.

XXX pullup-10

ld.elf_so: Test another edge case of mismatched TLS models.

One library defines a symbol and _doesn't_ use it, so it has no
indication of whether the symbol is for static TLS or dynamic TLS,
and then two other libraries use it in different ways.

XXX pullup-10

ld.elf_so: Test TLS abuse of static def, dynamic use and vice versa.

XXX pullup-10

ld.elf_so: Test extern dynamic TLS too.

XXX pullup-10

ld.elf_so: Nix inadvertently committed private test program.

ld.elf_so: Fix extern TLS test to match PR toolchain/50277.

Now it's actually testing the problem.

ld.elf_so: New test for extern initial-exec TLS, PR toolchain/50277.

XXX pullup-10

branches: 1.12.4;
Drop explicit -msecure-plt, it's the default for both clang and gcc.

branches: 1.11.2;
Add new RTLD test file for r_debug

New tests:
- self
- dlopen

Both check whether the r_debug structure seems to be well-formed, without
and with a dlopen(3) call.

branches: 1.10.2;
clang ifunc's on powerpc require secure-plt.

branches: 1.9.6;
Implement __cxa_thread_atexit and __cxa_thread_atexit_impl. This
functions are used for destructors of thread_local objects.

If a pending destructor exists, prevent unloading of shared objects.
Introduce __dl_cxa_refcount interface for this purpose. When the last
reference is gone and the object has been dlclose'd before, the
unloading is finalized.

Ideally, __cxa_thread_atexit_impl wouldn't exist, but libstdc++ insists
on providing __cxa_thread_atexit as direct wrapper without further
patching.

branches: 1.8.8;
Add basic support for indirect functions. It allows providing a public
function symbol with an implementation choosen at run time.
Refactor calls to functions by address in ld.elf_so to create temporary
function descriptors on the stack, if the address is not leaked outside.

Limitations:
- no support for initialising static storage with function pointers
- no support for unnamed resolver functions

Inspired by FreeBSD's r228435 by kib@freebsd.org.

avoid building stuff that depends upon pic objects if MKPIC == no.

only build the ld.elf_so tests if MKPIC != no.

PR/45015: ld.elf_so: support ELF symbol versioning
Applied latest patch.

Add initial regression test for ld.elf_so locking.

Add support for DF_1_BIND_NOW, DF_1_NODELETE and DF_1_NOOPEN marked
objects, and the RTLD_NODELETE and RTLD_NOLOAD flags to dlopen(3).

Mark libpthread as DF_1_NOOPEN and use it to test the functionality.

Somewhat taken from FreeBSD.

Fixes PR 42029.

OK from christos and joerg.

Convert a couple of old regress tests to ATF.

Remove the regress/usr.bin/rtld/dlopen/dlopen.c test as well as it's
covered by existing ATF test(s).

add regression tests for dlinfo()

ld.elf_so(1): Test concurrent dlopen/dlclose.

PR lib/59751: dlclose is not MT-safe depending on the libraries
unloaded

centralize pack-relative-relocs handling

ld.elf_so: Add a trivial test for R_*_RELATIVE relocations.

PR bin/59360: ld.elf_so(8): missing RELR support

tests/libexec/ld.elf_so/Makefile: Sort.

Preparation for:

PR bin/59360: ld.elf_so(8): missing RELR support

t_rtld_r_debug: Test this as a non-PIE executable too.

On MIPS, non-PIEs can use DT_MIPS_RLD_MAP or DT_MIPS_RLD_MAP_REL,
while PIEs can't use DT_MIPS_RLD_MAP because it relies on an absolute
virtual address baked into the file. So it's important to test both.

PR port-mips/59296: t_rtld_r_debug test is failing

tests/libexec/ld.elf_so/t_ifunc: Handle MKRELRO=no harder.

Don't even pass -Wl,-z,norelro if MKRELRO=no, because the toolchain's
ld(1) might not support relro _or_ norelro.

Should resolve, e.g.:

/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407182350Z-tools/bin/armv7--netbsdelf-eabihf-ld: warning: -z norelro ignored
armv7--netbsdelf-eabihf-clang: error: linker command failed with exit code 1 (use -v to see invocation)
--- t_ifunc_norelro ---
*** Failed target: t_ifunc_norelro
*** In directory: /home/source/ab/HEAD-llvm/src/tests/libexec/ld.elf_so
*** Failed commands:
${_MKTARGET_LINK}
...

tests/libexec/ld.elf_so/t_ifunc: Handle MKRELRO=no.

Just build t_ifunc and t_ifunc_now normally. If they wind up being
built with the same options as t_ifunc_norelro and
t_ifunc_norelro_now, so be it; easier to do it this way than to put
more conditionals into set lists.

Should resolve, e.g.:

/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-tools/bin/armv7--netbsdelf-eabihf-ld: warning: -z relro ignored
armv7--netbsdelf-eabihf-clang: error: linker command failed with exit code 1 (use -v to see invocation)
--- t_ifunc ---
*** Failed target: t_ifunc
*** In directory: /home/source/ab/HEAD-llvm/src/tests/libexec/ld.elf_so
*** Failed commands:
${_MKTARGET_LINK}
=> @# " link " ld.elf_so/t_ifunc
${_CCLINK.${:Ut_ifunc}} ${_LDFLAGS.${:Ut_ifunc}} ${_LDSTATIC.${:Ut_ifunc}} -o ${.TARGET} ${OBJS.${:Ut_ifunc}} ${_PROGLDOPTS} ${_LDADD.${:Ut_ifunc}}
=> /home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-tools/bin/armv7--netbsdelf-eabihf-clang --sysroot=/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-dest -Wl,--fatal-warnings -Wl,--warn-shared-textrel -pie -o t_ifunc t_ifunc.o -Wl,-rpath-link,/home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-dest/lib -L=/lib -Wl,-z,relro -Wl,-rpath,/usr/tests/libexec/ld.elf_so -lutil -latf-c
${CTFMERGE} ${CTFMFLAGS} -o ${.TARGET} ${OBJS.${:Ut_ifunc}}
=> /home/builds/ab/HEAD-llvm/evbarm-earmv7hf/202407141900Z-tools/bin/nbctfmerge -t -g -L VERSION -g -o t_ifunc t_ifunc.o

t_ifunc: Test with all combinations of {relro, bindnow}.

PR lib/57792

branches: 1.21.2;
ld.elf_so: Add some known-answer tests for hash functions.

Make sure the testing mechanism detects the traditional overflow bug.

adapt to ${CC_WNO_MAYBE_UNINITIALIZED}

Use ${CC_WNO_MAYBE_UNINITIALIZED} instead of
the older style more complex expressions.

Remove workarounds if they were for a specific
version of gcc < 10.

ld.elf_so: Test dynamic-then-static abuse via ctor.

XXX pullup-10

ld.elf_so: Test another edge case of mismatched TLS models.

One library defines a symbol and _doesn't_ use it, so it has no
indication of whether the symbol is for static TLS or dynamic TLS,
and then two other libraries use it in different ways.

XXX pullup-10

ld.elf_so: Test TLS abuse of static def, dynamic use and vice versa.

XXX pullup-10

ld.elf_so: Test extern dynamic TLS too.

XXX pullup-10

ld.elf_so: Nix inadvertently committed private test program.

ld.elf_so: Fix extern TLS test to match PR toolchain/50277.

Now it's actually testing the problem.

ld.elf_so: New test for extern initial-exec TLS, PR toolchain/50277.

XXX pullup-10

branches: 1.12.4;
Drop explicit -msecure-plt, it's the default for both clang and gcc.

branches: 1.11.2;
Add new RTLD test file for r_debug

New tests:
- self
- dlopen

Both check whether the r_debug structure seems to be well-formed, without
and with a dlopen(3) call.

branches: 1.10.2;
clang ifunc's on powerpc require secure-plt.

branches: 1.9.6;
Implement __cxa_thread_atexit and __cxa_thread_atexit_impl. This
functions are used for destructors of thread_local objects.

If a pending destructor exists, prevent unloading of shared objects.
Introduce __dl_cxa_refcount interface for this purpose. When the last
reference is gone and the object has been dlclose'd before, the
unloading is finalized.

Ideally, __cxa_thread_atexit_impl wouldn't exist, but libstdc++ insists
on providing __cxa_thread_atexit as direct wrapper without further
patching.

branches: 1.8.8;
Add basic support for indirect functions. It allows providing a public
function symbol with an implementation choosen at run time.
Refactor calls to functions by address in ld.elf_so to create temporary
function descriptors on the stack, if the address is not leaked outside.

Limitations:
- no support for initialising static storage with function pointers
- no support for unnamed resolver functions

Inspired by FreeBSD's r228435 by kib@freebsd.org.

avoid building stuff that depends upon pic objects if MKPIC == no.

only build the ld.elf_so tests if MKPIC != no.

PR/45015: ld.elf_so: support ELF symbol versioning
Applied latest patch.

Add initial regression test for ld.elf_so locking.

Add support for DF_1_BIND_NOW, DF_1_NODELETE and DF_1_NOOPEN marked
objects, and the RTLD_NODELETE and RTLD_NOLOAD flags to dlopen(3).

Mark libpthread as DF_1_NOOPEN and use it to test the functionality.

Somewhat taken from FreeBSD.

Fixes PR 42029.

OK from christos and joerg.

Convert a couple of old regress tests to ATF.

Remove the regress/usr.bin/rtld/dlopen/dlopen.c test as well as it's
covered by existing ATF test(s).

add regression tests for dlinfo()