[Issue 12092] Wrong TLS access in PIC code (X86_32)

[d-bugmail at puremagic.com]

https://d.puremagic.com/issues/show_bug.cgi?id=12092



--- Comment #1 from Martin Nowak <code at dawg.eu> 2014-02-06 17:47:07 PST ---
I was already able to fix the relocation type and make the compiler call
__tls_get_addr.
https://github.com/MartinNowak/dmd/commits/fix12092
Now I'm stuck!
The code sequence to load the __tls_get_addr argument is incorrect. It ought to
use a LEA with SIB addressing to leave patch room for the linker. Instead it
just uses a simple LEA.

Should be:
  13:    8d 04 1d 00 00 00 00     lea    0x0(,%ebx,1),%eax
  1a:    e8 fc ff ff ff           call   1b <foo+0x1b>

Is:
  17:    8d 81 00 00 00 00        lea    0x0(%ecx),%eax
  1d:    e8 fc ff ff ff           call   1e <_D3foo3fooFZi+0x1e>

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