* function probe point
@ 2005-10-08 11:31 Mao, Bibo
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From: Mao, Bibo @ 2005-10-08 11:31 UTC (permalink / raw)
To: systemtap
Hi,
I view systemtap source code, and by the notation and test, I find that
kretprobe function probe point is based on the entry pc of this
function, but for kprobe function probe point it is based on the
prologue-end of this function.
I ever objdumped vmlinux, and found that in IA32, EM64T platform kprobe
function probe point is based on prologue-end place, a pointer after the
function's frame has been set up. But in IA64 platform, the function
kprobe point always is entry point plus 1. I do not know why.
Any suggestion is welcome.
Regards
Bibo,mao
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2005-10-08 11:31 function probe point Mao, Bibo
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