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Hi - On Thu, Sep 21, 2006 at 08:50:29PM +0200, Ingo Molnar wrote: > [...] let me qualify that: parameters must be prepared there too - > but no actual function call inserted. (at most a NOP > inserted). [...] Does a simple asm() that takes read-only > parameters but only adds a NOP achieve this result? You mean something like this? #define MARK(n,v1,v2,v3) asm ("__mark_" #n ": nop" :: \ "X" (v1), "X" (v2), "X" (v3)) I haven't been able to get gcc to emit any better debuginfo for parameters pseudo-passed like this. (I've tested such a marker inserted into an inner loop of dhrystone. It was compiled with "-ggdb -O3". Neither gdb nor systemtap could resolve the same values/symbols being passed as MARK() arguments, though at least the breakpoint address was nicely marked.) - FChE
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