* sysdeps/generic/dl-tls.c (_dl_allocate_tls_storage): New function,
split out of _dl_allocate_tls.
(_dl_allocate_tls_init): Likewise.
(_dl_allocate_tls): Call those.
* sysdeps/generic/ldsodefs.h: Declare them with attribute_hidden.
* elf/rtld.c (dl_main): Call them separately instead of calling
_dl_allocate_tls. Delay _dl_allocate_tls_init until after relocation
is finished, so that the initializer data has been relocated before we
copy it into the main thread's TLS block.
* sysdeps/generic/dl-tls.c (_dl_allocate_tls): Fix off-by-one error in
loop conditions, prevented the last used module from being initialized.
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