On Sat, Dec 02, 2017 at 05:00:23PM +0000, Andrew Haley wrote: > On 02/12/17 14:04, Liu Hao wrote: > > > > 0) What is the magical `@tpoff` suffix supposed to do? The `@ntpoff` and > > `@dtpoff` things are documented in System V ABI but there doesn't seem > > to be anything about `@tpoff`. > > 1) How does LD tell that `b` (a thread-local integer) is different from > > `a` (a static integer)? `a` is apparently offset from RIP, but what > > thing is `b` offset from? > > 2) TLS initializers are placed into specially named sections. The > > sections will have the names like `.tls$XXX` where `$XXX` is used to > > sort these sections and discarded thereafter. How is LD supposed to > > associate the section containing the initializer with the symbol of > > object being initialized, without disordering? > > > > Any help will be appreciated. > > Have you read > > https://www.fsfla.org/~lxoliva/writeups/TLS/RFC-TLSDESC-x86.txt > > ?
Well, for GNU TLS (rather than GNU2) you want to read https://www.akkadia.org/drepper/tls.pdf Jakub
