eclipse 如何使用 ndk-gdb 调试本机代码
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时间：2020-09-19 20:53:06 来源:igfitidea点击:
How to Debug native code using ndk-gdb
提问by DeltaCap019
This is what I am getting after running ndk-gdbaccording to many tutorials when it links to you to (gdb)server you have to type continuebut what after that how to debug the code there after. In my case it displays Continuingand remain like this. WHat i have to do further I am totally clueless.
这是我ndk-gdb根据许多教程运行后得到的结果，当它链接到(gdb)您必须键入的服务器时，continue但之后如何调试代码。在我的情况下，它显示Continuing并保持这样。我必须进一步做什么我完全一无所知。
Arathore@chd-arathore-AND /cygdrive/d/All_Work/All_ARathore/All_Workspace_Practice/ndkfoo
$ /cygdrive/d/All_Required_Stuff/Android/android-ndk-r8e/ndk-gdb --verbose --adb=/cygdrive/D/All_Required_Stuff/Android/android-sdk-windows/platform-tools/adb.exe
Android NDK installation path: /cygdrive/d/All_Required_Stuff/Android/android-ndk-r8e
Using specific adb command: /cygdrive/D/All_Required_Stuff/Android/android-sdk-windows/platform-tools/adb.exe
ADB version found: Android Debug Bridge version 1.0.31
Using ADB flags:
Using auto-detected project path: .
Found package name: com.example.ndkfoo
/cygdrive/d/All_Required_Stuff/Android/android-ndk-r8e/build/core/add-application.mk:128: Android NDK: WARNING: APP_PLATFORM android-14 is larger than android:minSdkVersion 8 in /cygdrive/d/All_Work/All_ARathore/All_Workspace_Practice/ndkfoo/AndroidManifest.xml
ABIs targetted by application: armeabi
Device API Level: 17
Device CPU ABIs: armeabi-v7a armeabi
Compatible device ABI: armeabi
/cygdrive/d/All_Required_Stuff/Android/android-ndk-r8e/build/core/add-application.mk:128: Android NDK: WARNING: APP_PLATFORM android-14 is larger than android:minSdkVersion 8 in /cygdrive/d/All_Work/All_ARathore/All_Workspace_Practice/ndkfoo/AndroidManifest.xml
Using gdb setup init: /cygdrive/d/All_Work/All_ARathore/All_Workspace_Practice/ndkfoo/libs/armeabi/gdb.setup
/cygdrive/d/All_Required_Stuff/Android/android-ndk-r8e/build/core/add-application.mk:128: Android NDK: WARNING: APP_PLATFORM android-14 is larger than android:minSdkVersion 8 in /cygdrive/d/All_Work/All_ARathore/All_Workspace_Practice/ndkfoo/AndroidManifest.xml
Using toolchain prefix: /cygdrive/d/All_Required_Stuff/Android/android-ndk-r8e/toolchains/arm-linux-androideabi-4.6/prebuilt/windows/bin/arm-linux-androideabi-
/cygdrive/d/All_Required_Stuff/Android/android-ndk-r8e/build/core/add-application.mk:128: Android NDK: WARNING: APP_PLATFORM android-14 is larger than android:minSdkVersion 8 in /cygdrive/d/All_Work/All_ARathore/All_Workspace_Practice/ndkfoo/AndroidManifest.xml
Using app out directory: ./obj/local/armeabi
Found debuggable flag: true
Found device gdbserver: /data/data/com.example.ndkfoo/lib/gdbserver
Found data directory: '/data/data/com.example.ndkfoo'
Found running PID: 1106
Launched gdbserver succesfully.
Setup network redirection
## COMMAND: adb_cmd shell run-as com.example.ndkfoo lib/gdbserver +debug-socket --attach 1106
## COMMAND: adb_cmd forward tcp:5039 localfilesystem:/data/data/com.example.ndkfoo/debug-socket
## COMMAND: adb_cmd pull /system/bin/app_process obj/local/armeabi/app_process
Attached; pid = 1106
Listening on Unix socket debug-socket
99 KB/s (9592 bytes in 0.093s)
Pulled app_process from device/emulator.
## COMMAND: adb_cmd pull /system/bin/linker obj/local/armeabi/linker
54 KB/s (63240 bytes in 1.140s)
Pulled linker from device/emulator.
## COMMAND: adb_cmd pull /system/lib/libc.so obj/local/armeabi/libc.so
75 KB/s (297604 bytes in 3.828s)
Pulled libc.so from device/emulator.
GNU gdb (GDB) 7.3.1-gg2
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=i586-pc-mingw32msvc --target=arm-linux-android".
For bug reporting instructions, please see:
<http://source.android.com/source/report-bugs.html>.
Remote debugging from host 0.0.0.0
libthread_db:td_ta_new: Probing system for platform bug.
libthread_db:_get_task_permitted_caps: Found CapPerm of 0 in /proc/1147/task/1147/status
libthread_db:_get_task_permitted_caps: Found CapPerm of 0 in /proc/1106/task/1106/status
libthread_db:_get_task_permitted_caps: Found CapPerm of 0 in /proc/1106/task/1109/status
libthread_db:_get_task_permitted_caps: Found CapPerm of 0 in /proc/1106/task/1111/status
libthread_db:_get_task_permitted_caps: Found CapPerm of 0 in /proc/1106/task/1112/status
libthread_db:_get_task_permitted_caps: Found CapPerm of 0 in /proc/1106/task/1113/status
libthread_db:_get_task_permitted_caps: Found CapPerm of 0 in /proc/1106/task/1114/status
libthread_db:_get_task_permitted_caps: Found CapPerm of 0 in /proc/1106/task/1115/status
libthread_db:_get_task_permitted_caps: Found CapPerm of 0 in /proc/1106/task/1116/status
libthread_db:_get_task_permitted_caps: Found CapPerm of 0 in /proc/1106/task/1117/status
libthread_db:_get_task_permitted_caps: Found CapPerm of 0 in /proc/1106/task/1118/status
libthread_db:td_ta_new: Victory: We can debug theads!
0x40037ebc in epoll_wait () from D:/All_Work/All_ARathore/All_Workspace_Practice/ndkfoo/obj/local/armeabi/libc.so
warning: Could not load shared library symbols for 72 libraries, e.g. libstdc++.so.
Use the "info sharedlibrary" command to see the complete listing.
Do you need "set solib-search-path" or "set sysroot"?
warning: Breakpoint address adjusted from 0x40005a53 to 0x40005a52.
(gdb) continue
Continuing.
How to debug?
如何调试？
According to the ndk-Docs
根据 ndk-Docs
You can set breakpoints with 'b <location>' and resume execution with 'c'
(for 'continue'). See the GDB manual for a list of commands.
How to make this happen.
如何做到这一点。
回答by krsteeve
The commands are the same as in gdb. A basic primer:
命令与 gdb 中的相同。基础入门：
- Set a breakpoint by entering
b <function name>orb <file>:<line number> - step into functions by typing
s - go to next line by typing
n - continue execution with
c - print a variable or expression value with
print <exp> - repeat the last typed command by just hitting enter
- 通过输入
b <function name>或设置断点b <file>:<line number> - 通过键入进入函数
s - 通过键入转到下一行
n - 继续执行
c - 打印变量或表达式值
print <exp> - 只需按 Enter 即可重复上次输入的命令
You can find much more comprehensive gdb tutorials online. I personally have a gdb cheatsheet printed out and posted on my wall. This should be enough to get you started.
您可以在网上找到更全面的 gdb 教程。我个人有一个 gdb 备忘单打印出来并贴在我的墙上。这应该足以让您入门。
