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5d28a8962d
It can be used to speed up the libgcc unwinder, and the internal _dl_find_dso_for_object function (which is used for caller identification in dlopen and related functions, and in dladdr). _dl_find_object is in the internal namespace due to bug 28503. If libgcc switches to _dl_find_object, this namespace issue will be fixed. It is located in libc for two reasons: it is necessary to forward the call to the static libc after static dlopen, and there is a link ordering issue with -static-libgcc and libgcc_eh.a because libc.so is not a linker script that includes ld.so in the glibc build tree (so that GCC's internal -lc after libgcc_eh.a does not pick up ld.so). It is necessary to do the i386 customization in the sysdeps/x86/bits/dl_find_object.h header shared with x86-64 because otherwise, multilib installations are broken. The implementation uses software transactional memory, as suggested by Torvald Riegel. Two copies of the supporting data structures are used, also achieving full async-signal-safety. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> |
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.. | ||
bug-atexit1-lib.c | ||
bug-atexit1.c | ||
bug-atexit2-lib.c | ||
bug-atexit2.c | ||
bug-atexit3-lib.cc | ||
bug-atexit3.c | ||
bug-dl-leaf-lib-cb.c | ||
bug-dl-leaf-lib.c | ||
bug-dl-leaf.c | ||
bug-dlopen1.c | ||
bug-dlsym1-lib1.c | ||
bug-dlsym1-lib2.c | ||
bug-dlsym1.c | ||
default.c | ||
defaultmod1.c | ||
defaultmod2.c | ||
dladdr1.c | ||
dladdr.c | ||
dlclose.c | ||
dlerror.c | ||
dlerror.h | ||
dlfcn.h | ||
dlinfo.c | ||
dlmopen.c | ||
dlopen.c | ||
dlopenold.c | ||
dlsym.c | ||
dlvsym.c | ||
errmsg1.c | ||
errmsg1mod.c | ||
failtest.c | ||
failtestmod.c | ||
glreflib1.c | ||
glreflib2.c | ||
glreflib3.c | ||
glrefmain.c | ||
libc_dlerror_result.c | ||
libdl-compat.c | ||
Makefile | ||
modatexit.c | ||
modcxaatexit.c | ||
moddummy1.c | ||
moddummy2.c | ||
modstatic2.c | ||
modstatic3.c | ||
modstatic5.c | ||
modstatic.c | ||
sdlfreeres.c | ||
tst-dladdr.c | ||
tst-dlinfo.c | ||
tst-rec-dlopen.c | ||
tstatexit.c | ||
tstcxaatexit.c | ||
tststatic2.c | ||
tststatic3.c | ||
tststatic4.c | ||
tststatic5.c | ||
tststatic.c | ||
Versions |