Re: [DynInst_API:] Is there any way to get the mapping information between rewrote function and original function

[Xi Chen <xi.chen.chn@xxxxxxxxx>]

Hi,

 ÂThank you for the helping, but the DYNINST_DEBUG_RELOC seems only have the information of the BB need to be updated which still in the old code space, and DEBUG_SPRINGBOARD only tell me the entry point of the rewrote function (A jmp between the old function to the rewrote function). However both of them do not contain the function boundary information after rewriting. I mean I can get the rewrites function boundary via sort the entry point of the rewrote function. However I wonder if there are more clean way to do that. Also since in the code generation phase, a adjustment of the offset need to be done, so I wonder if there are any mapping information I can find to map the instruction in the original function and the rewrote function.

2015-03-17 17:57 GMT+01:00 Bill Williams <bill@xxxxxxxxxxx>:

On 03/17/2015 11:45 AM, Xi Chen wrote:

Hi,
 ÂI wonder if there are any debug flag or run-time ENV can tell the
mapping information between the original function and the copied
function inside the dyninstInst section. Or even the instruction mapping
information like how the instruction being adjust when certain
trampoline code is added.
 ÂThanks in advance.

DYNINST_DEBUG_RELOC (for relocated code) and DYNINST_DEBUG_SPRINGBOARD (for springboard branches) should tell you everything you need if you enable them during the rewriting process. There are no flags that will have the same effect on a rewritten binary when you run it, though.

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Best Regards
X.Chen




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--bw

Bill Williams
Paradyn Project
bill@xxxxxxxxxxx

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Best Regards

X.Chen