在android下，如果我們寫jni程序，可能經常會出現類似下面的crash log：
10-11 20:47:24.527: INFO/DEBUG(61): *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
10-11 20:47:24.527: INFO/DEBUG(61): Build fingerprint: 'rockchip/rk29sdk/rk29sdk:2.3.1/GINGERBREAD/eng.root.20110711.153921:eng/test-keys'
10-11 20:47:24.527: INFO/DEBUG(61): pid: 669, tid: 681 >>> com.xxx.Camera <<<
10-11 20:47:24.527: INFO/DEBUG(61): signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0000000c
10-11 20:47:24.527: INFO/DEBUG(61): r0 00000000 r1 45a7d95c r2 00000001 r3 00002328
10-11 20:47:24.527: INFO/DEBUG(61): r4 00000000 r5 00002328 r6 00002328 r7 00000000
10-11 20:47:24.527: INFO/DEBUG(61): r8 45a7db30 r9 45a7d95c 10 45043fac fp 81fa5368
10-11 20:47:24.527: INFO/DEBUG(61): ip 8320a1e4 sp 45a7d928 lr afd1921b pc afd18f60 cpsr 20000030
10-11 20:47:24.527: INFO/DEBUG(61): d0 67706a2e34343237 d1 3333383133317473
10-11 20:47:24.527: INFO/DEBUG(61): d2 0000000000000069 d3 000000000000006c
10-11 20:47:24.527: INFO/DEBUG(61): d4 9fd151719e4be940 d5 66a628fea8a196ce
10-11 20:47:24.527: INFO/DEBUG(61): d6 eb3850c7184a1f94 d7 00000000000000a7
10-11 20:47:24.527: INFO/DEBUG(61): d8 0000000000000000 d9 0000000000000000
10-11 20:47:24.527: INFO/DEBUG(61): d10 0000000000000000 d11 0000000000000000
10-11 20:47:24.527: INFO/DEBUG(61): d12 0000000000000000 d13 0000000000000000
10-11 20:47:24.527: INFO/DEBUG(61): d14 0000000000000000 d15 0000000000000000
10-11 20:47:24.527: INFO/DEBUG(61): d16 4051bdc000000027 d17 bff0000000000000
10-11 20:47:24.527: INFO/DEBUG(61): d18 3ff0000000000000 d19 0000000000000000
10-11 20:47:24.527: INFO/DEBUG(61): d20 0000000000000000 d21 0000000000000000
10-11 20:47:24.527: INFO/DEBUG(61): d22 3ff0000000000000 d23 0000000000000000
10-11 20:47:24.527: INFO/DEBUG(61): d24 3ff0000000000000 d25 0000000000000000
10-11 20:47:24.527: INFO/DEBUG(61): d26 0000000000000000 d27 0000000000000000
10-11 20:47:24.527: INFO/DEBUG(61): d28 0000000000000000 d29 0000000000000000
10-11 20:47:24.527: INFO/DEBUG(61): d30 0000000000000000 d31 0000000000000000
10-11 20:47:24.527: INFO/DEBUG(61): scr 20000012
10-11 20:47:24.577: INFO/DEBUG(61): #00 pc 00018f60 /system/lib/libc.so
10-11 20:47:24.577: INFO/DEBUG(61): #01 pc 00019216 /system/lib/libc.so
10-11 20:47:24.577: INFO/DEBUG(61): #02 pc 000029fe /system/lib/libxxxCamera.so
10-11 20:47:24.577: INFO/DEBUG(61): #03 pc 00002bd4 /system/lib/libxxxCamera.so
10-11 20:47:24.577: INFO/DEBUG(61): #04 pc 00002f72 /system/lib/libxxxCamera.so
10-11 20:47:24.577: INFO/DEBUG(61): #05 pc 00002fd6 /system/lib/libxxxCamera.so
10-11 20:47:24.577: INFO/DEBUG(61): #06 pc 00003018 /system/lib/libxxxCamera.so
10-11 20:47:24.577: INFO/DEBUG(61): #07 pc 00017df4 /system/lib/libdvm.so
10-11 20:47:24.577: INFO/DEBUG(61): #08 pc 000495c4 /system/lib/libdvm.so
10-11 20:47:24.577: INFO/DEBUG(61): #09 pc 00042178 /system/lib/libdvm.so
10-11 20:47:24.577: INFO/DEBUG(61): #10 pc 0004ed9a /system/lib/libdvm.so
10-11 20:47:24.577: INFO/DEBUG(61): #11 pc 0001cff4 /system/lib/libdvm.so
10-11 20:47:24.577: INFO/DEBUG(61): #12 pc 000220a4 /system/lib/libdvm.so
10-11 20:47:24.577: INFO/DEBUG(61): #13 pc 00020f9c /system/lib/libdvm.so
10-11 20:47:24.577: INFO/DEBUG(61): #14 pc 0005fafc /system/lib/libdvm.so
10-11 20:47:24.577: INFO/DEBUG(61): #15 pc 0005fd10 /system/lib/libdvm.so
10-11 20:47:24.577: INFO/DEBUG(61): #16 pc 000540e2 /system/lib/libdvm.so
10-11 20:47:24.577: INFO/DEBUG(61): #17 pc 000118e4 /system/lib/libc.so
10-11 20:47:24.577: INFO/DEBUG(61): #18 pc 000114b0 /system/lib/libc.so
10-11 20:47:24.577: INFO/DEBUG(61): code around pc:
10-11 20:47:24.577: INFO/DEBUG(61): afd18f40 624561c4 f8c062c6 62018028 81f0e8bd
10-11 20:47:24.577: INFO/DEBUG(61): afd18f50 e92d688b 46044ff7 2b004689 8128f000
10-11 20:47:24.577: INFO/DEBUG(61): afd18f60 07028980 6921d501 4620b941 fc54f003
10-11 20:47:24.577: INFO/DEBUG(61): afd18f70 f7f8b120 2209ff87 e1166002 7000f8d9
10-11 20:47:24.577: INFO/DEBUG(61): afd18f80 683e89a3 3708687d 0a02f013 e017d103
10-11 20:47:24.577: INFO/DEBUG(61): code around lr:
10-11 20:47:24.577: INFO/DEBUG(61): afd191f8 b086b570 f602fb01 9004460c a804a901
10-11 20:47:24.577: INFO/DEBUG(61): afd19208 46189001 22014615 96059202 f7ff9603
10-11 20:47:24.577: INFO/DEBUG(61): afd19218 b128fe9b 1a709903 f7f34621 4605eeee
10-11 20:47:24.577: INFO/DEBUG(61): afd19228 b0064628 bf00bd70 46036841 1e4ab510
10-11 20:47:24.577: INFO/DEBUG(61): afd19238 60422a00 6802bfa2 0b01f812 da02601a
10-11 20:47:24.577: INFO/DEBUG(61): stack:
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d8e8 00000000
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d8ec 00000000
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d8f0 00000000
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d8f4 00000000
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d8f8 ffffdee8
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d8fc 45a7d9a4
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d900 ffffdefc
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d904 45a7db30
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d908 45043fc4
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d90c 45043fac
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d910 81fa5368
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d914 afd19b4b /system/lib/libc.so
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d918 00000000
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d91c 45a7d9bd
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d920 00000000
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d924 7fffffe6
10-11 20:47:24.577: INFO/DEBUG(61): #00 45a7d928 00000000
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d92c 45a7d95c
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d930 00000001
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d934 00000001
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d938 00002328
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d93c 00002328
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d940 00000000
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d944 45a7db30
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d948 45043fc4
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d94c 45043fac
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d950 81fa5368
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d954 afd1921b /system/lib/libc.so
10-11 20:47:24.577: INFO/DEBUG(61): #01 45a7d958 afd46784
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d95c 45a7d968
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d960 00000001
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d964 00002328
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d968 0020d530
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d96c 00002328
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d970 00000000
10-11 20:47:24.577: INFO/DEBUG(61): 45a7d974 00002328
10-11 20:47:24.597: INFO/DEBUG(61): 45a7d978 0020d530
10-11 20:47:24.597: INFO/DEBUG(61): 45a7d97c 83202a03 /system/lib/libxxxCamera.so
10-11 20:47:25.317: INFO/BootReceiver(95): Copying /data/tombstones/tombstone_08 to DropBox (SYSTEM_TOMBSTONE)
我們可以使用gdb來調試，但andorid下gdb不好用，而且不太穩定。其實可以直接通過上面的crash log知道調用堆棧的。
與調用堆棧相關的是類似下面的信息：
10-11 20:47:24.577: INFO/DEBUG(61): #00 pc 00018f60 /system/lib/libc.so
10-11 20:47:24.577: INFO/DEBUG(61): #01 pc 00019216 /system/lib/libc.so
10-11 20:47:24.577: INFO/DEBUG(61): #02 pc 000029fe /system/lib/libxxxCamera.so
10-11 20:47:24.577: INFO/DEBUG(61): #03 pc 00002bd4 /system/lib/libxxxCamera.so
10-11 20:47:24.577: INFO/DEBUG(61): #04 pc 00002f72 /system/lib/libxxxCamera.so
10-11 20:47:24.577: INFO/DEBUG(61): #05 pc 00002fd6 /system/lib/libxxxCamera.so
10-11 20:47:24.577: INFO/DEBUG(61): #06 pc 00003018 /system/lib/libxxxCamera.so
10-11 20:47:24.577: INFO/DEBUG(61): #07 pc 00017df4 /system/lib/libdvm.so
10-11 20:47:24.577: INFO/DEBUG(61): #08 pc 000495c4 /system/lib/libdvm.so
10-11 20:47:24.577: INFO/DEBUG(61): #09 pc 00042178 /system/lib/libdvm.so
10-11 20:47:24.577: INFO/DEBUG(61): #10 pc 0004ed9a /system/lib/libdvm.so
10-11 20:47:24.577: INFO/DEBUG(61): #11 pc 0001cff4 /system/lib/libdvm.so
10-11 20:47:24.577: INFO/DEBUG(61): #12 pc 000220a4 /system/lib/libdvm.so
10-11 20:47:24.577: INFO/DEBUG(61): #13 pc 00020f9c /system/lib/libdvm.so
10-11 20:47:24.577: INFO/DEBUG(61): #14 pc 0005fafc /system/lib/libdvm.so
10-11 20:47:24.577: INFO/DEBUG(61): #15 pc 0005fd10 /system/lib/libdvm.so
10-11 20:47:24.577: INFO/DEBUG(61): #16 pc 000540e2 /system/lib/libdvm.so
10-11 20:47:24.577: INFO/DEBUG(61): #17 pc 000118e4 /system/lib/libc.so
10-11 20:47:24.577: INFO/DEBUG(61): #18 pc 000114b0 /system/lib/libc.so
/home/xufan/android/android-1.5/prebuilt/linux-x86/toolchain/arm-eabi-4.2.1/bin/arm-eabi-addr2line -e /home/xufan/android/android-1.5/out/target/product/generic/symbols/system/lib/libxxxCamera.so
000029fe
紅色部分需要按照crash log做修改。/home/xufan/android/android-1.5/爲androoid代碼的位置。