Re: [Mingw-users] __thread not using PE loader support?

[Danny Smith <dannysmith@xxxxxxxxxxxx>]

> 
> While working on the TLS support of the boost library I discovered
> that the 4.2.x version of gcc is said to honor the __thread keyword.
> 
> However I was not able to grep the "tls_used" keyword anywhere in the
> sources. This is _very_ strange for me.

gcc uses TlsAlloc, TlsSetValue, etc  to implement __thread support on
windows 

> Does this mean TLS support for mingw does not make use of the windows
> loader support to initialize TLS variables?
> 
Yes, that is what it means.

> Somewhere on this list I read that there is believe that the 
> gnu linker
> does not yet support this. This is _wrong_! The gnu linker is able to
> do everything that is necessary to correctly initialize a PE image
> (including the TLS directory). I was able to succesfully hook to the
> tls callback function that way. (This is what I really need.)
> 
Please share your method of doing this.

Danny


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