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Re: inline assembler question
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From: |
Ian Lance Taylor |
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Subject: |
Re: inline assembler question |
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Date: |
18 May 2005 10:34:49 -0400 |
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User-agent: |
Gnus/5.09 (Gnus v5.9.0) Emacs/21.3 |
gumbold <address@hidden> writes:
> please tell me what it means:
> #define MBARRIER() __asm__ __volatile__ ("lock; addl $0,0(%%esp)" :::
> "memory")
> #define UNLOCK_MBARRIER() __asm__ __volatile__ ("" ::: "memory")
This is where the asm statement is documented:
http://gcc.gnu.org/onlinedocs/gcc-4.0.0/gcc/Extended-Asm.html
If you have a more specific question, ask it.
Ian