Android中如何使用 address2line

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原文地址：http://stackoverflow.com/questions/5314036/how-to-use-addr2line-in-android

I was stuck with my app, as i am unable to debug as it is a multithreaded one and crashes with error SIGSEGV. I get lot of information on logcat, which gives me addresses in my native library. It'll helpfull if i can convert these addresses into my code.

Does anybody have any idea, how to use addr2line, which is provided with android-ndk?

Let's say that logcat show you the following crash log (this is from one of my projects):

I/DEBUG   (   31):************************************************ 
I/DEBUG   (  31):Build fingerprint:'generic/sdk/generic:2.3/GRH55/79397:eng/test-keys' 
I/DEBUG   (  31): pid:378, tid:386  >>> com.example.gltest<<< 
I/DEBUG   (  31): signal11(SIGSEGV), code1(SEGV_MAPERR), fault addr00000000 
I/DEBUG   (  31):  r0001dbdc0  r100000001  r200000000  r300000000 
I/DEBUG   (  31):  r400000000  r540a40000  r64051a480  r742ddbee8 
I/DEBUG   (  31):  r843661b24  r942ddbed0  1042ddbebc  fp41e462d8 
I/DEBUG   (  31):  ip00000001  sp436619d0  lr83a12f5d  pc8383deb4  cpsr20000010 
I/DEBUG   (  31):          #00  pc 0003deb4  /data/data/com.example.gltest/lib/libnativemaprender.so 
I/DEBUG   (  31):          #01  pc 00039b76  /data/data/com.example.gltest/lib/libnativemaprender.so 
I/DEBUG   (  31):          #02  pc 00017d34  /system/lib/libdvm.so 

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Look at the last 3 lines; this is your callstack. 'pc' is the program counter, and the pc for stack frame #00 gives you the address where the crash occurred. This is the number to pass to addr2line.

I'm using NDK r5, so the executable I'm using is located at $NDK/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin; make sure that is in your$PATH. The command to use looks like

arm-linux-androideabi-addr2line -C -f -e obj/local/armeabi/libXXX.so <address> 

Or, for the case above:

arm-linux-androideabi-addr2line -C -f -e obj/local/armeabi/libnativemaprender.so 0003deb4 

Which gives you the location of the crash.

Note:

• The -C flag is to demangle C++ code
• Use the .so file under obj/local/armeabi, since this is the non-stripped version

Also, when using NDK r5 with a 2.3 AVD, it is actually possible to debug multithreaded code.

           

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