The original code did not support dynamically loaded libraries and used suboptimal access to TLS variables. New implementation removes lazy resolving of TLS relocation - due to flaw in TLSDESC design is impossible to switch resolver function at runtime without expensive locking. Due to this, 3 specialized resolvers are implemented: - load time resolver for TLS relocation from libraries loaded with main executable (thus with known TLS offset). - resolver for undefined thread weak symbols. - slower lazy resolver for dynamically loaded libraries with fast path for already resolved symbols. PR: 228892, 232149, 233204, 232311 MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D18417 |
||
---|---|---|
.. | ||
elf_rtld.x | ||
Makefile.inc | ||
reloc.c | ||
rtld_machdep.h | ||
rtld_start.S | ||
Symbol.map |