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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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| .. | ||
| 64 | ||
| x32 | ||
| ____longjmp_chk.S | ||
| __start_context.S | ||
| clone3.S | ||
| clone.S | ||
| configure | ||
| configure.ac | ||
| dl-cache.h | ||
| dl-procinfo.c | ||
| dl-procinfo.h | ||
| getcontext.S | ||
| Implies | ||
| kernel-features.h | ||
| ldconfig.h | ||
| ldd-rewrite.sed | ||
| libc_sigaction.c | ||
| libmvec.abilist | ||
| makecontext.c | ||
| Makefile | ||
| register-dump.h | ||
| setcontext.S | ||
| sigaltstack-offsets.sym | ||
| sigcontextinfo.h | ||
| swapcontext.S | ||
| syscall.S | ||
| syscalls.list | ||
| sysdep.h | ||
| sysdep.S | ||
| tst-glibc-hwcaps-2.c | ||
| ucontext_i.sym | ||
| Versions | ||
| vfork.S | ||
| x86-64-isa-level-VALUE.c | ||