How does GCC access global variables on x86

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To: gcc-help@xxxxxxxxxxx
Subject: How does GCC access global variables on x86
From: Xin Tong <xerox.time.tech@xxxxxxxxx>
Date: Tue, 7 Feb 2012 11:56:15 -0500
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I am wondering how gcc accesses global variables on x86. from the code
i have seen so far, it seems to use the %RIP as the base register. Is
it always like this?

  4006f9:       f0 80 0d bf 0b 20 00    lock orb $0x0,0x200bbf(%rip)
     # 6012c0 <t2lockor>
  400700:       00

t2lockor is a global variables.

Thanks

Xin

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