.debug_line info analyzed by dmprof is not accurate

[WenSheng He]

In dmprof, source path line info is got through readelf -wL command. The following is an example output by readelf:

../../third_party/skia/include/core/SkRect.h:  ---- Currently dmprof uses this file path

/SkRect.h          474           0x11f0ac0

 

SkRect.h          474           0x11f0ac0

 

SkCanvas.cpp         1940           0x11f0ad0

 

SkCanvas.cpp         1941           0x11f0ad9  --- The better one I think should be this. But here is another problem: don't have source path, just the name 

SkCanvas.cpp         1942           0x11f0afc

I check the source of readelf tool. There is no method to get the path except modify the code to change the output format. Why not use -W flag to do this?

So, to get more accurate result of the source path, need to modify both the dmprof and readelf tool.

What's your opinion?

[WenSheng He]

--- The better one I think should be this. But here is another problem: don't have source path, just the name 

It seems that objdump --dwarf=decodedline has the path. Why not use this tool?

在 2014年9月29日星期一UTC+8上午11时13分37秒，WenSheng He写道：