On 03/12/17 10:50, Jakub Jelinek wrote: > 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
Ah, thanks. I thought that it was much the same. -- Andrew Haley Java Platform Lead Engineer Red Hat UK Ltd. <https://www.redhat.com> EAC8 43EB D3EF DB98 CC77 2FAD A5CD 6035 332F A671
