pthread locking code - C vs. ASM

Mike Frysinger vapier@gentoo.org
Mon Jan 21 22:19:00 GMT 2008


On Monday 21 January 2008, Gilles Carry wrote:
> Is asm code supposed to do exactly the same as C code?

of course ... things would be broken otherwise

> I recently had a case when I wanted to modify pthread_cond_signal.c and it
> did not compile because of unexisting syscall macros.

you probably didnt include the right headers

> Should C code be the reference? Should asm be modified only when we are
> sure C is ok? It is a problem when people change asm code without updating
> the underlying C files.

you should modify whatever your target platform uses

then again, i'd wonder why you were mucking around the libc code in the first 
place ...
-mike
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