freebsd-dev/libexec/rtld-elf/riscv
Michal Meloun 4849c3a570 Improve R_AARCH64_TLSDESC relocation.
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
2018-12-15 10:38:07 +00:00
..
reloc.c Improve R_AARCH64_TLSDESC relocation. 2018-12-15 10:38:07 +00:00
rtld_machdep.h Rework rtld's TLS Variant I implementation to match r326794 2018-09-05 23:23:16 +00:00
rtld_start.S Save and restore floating-point arguments. 2018-08-02 12:21:39 +00:00