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elf, nptl: Initialize static TLS directly in ld.so

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The stack list is available in ld.so since commit
1daccf403b ("nptl: Move stack list
variables into _rtld_global"), so it's possible to walk the stack
list directly in ld.so and perform the initialization there.

This eliminates an unprotected function pointer from _rtld_global
and reduces the libpthread initialization code.
This commit is contained in:
Florian Weimer
2021-05-05 06:20:31 +02:00
parent 2c71177309
commit 7cbf1c8416
9 changed files with 65 additions and 44 deletions
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2
elf/rtld.c
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@ -1139,7 +1139,9 @@ dl_main (const ElfW(Phdr) *phdr,
struct dl_main_state state;
dl_main_state_init (&state);
#if !THREAD_GSCOPE_IN_TCB
GL(dl_init_static_tls) = &_dl_nothread_init_static_tls;
#endif
#if defined SHARED && defined _LIBC_REENTRANT \
&& defined __rtld_lock_default_lock_recursive