Question

我尝试在我的root用户上附加一个进程并使用GDB创建corefile但是它无法创建gcore文件，因为无法找到这些符号。

在我的手机上，我打开终端应用程序并输入

su

在终端中授予root访问权限。我输入

dumpsys meminfo

显示所有正在运行的进程。我输入

gdbserver :1234 --attach 5132

在我的电脑上，我打开gdb.exe（来自Android NDK）并输入

(gdb) target remote 192.168.1.13:1234

我得到了那些信息

(gdb) target remote 192.168.1.13:1234
Remote debugging using 192.168.1.13:1234
warning: Architecture rejected target-supplied description
Reading /system/bin/app_process32_original from remote target...
warning: File transfers from remote targets can be slow. Use "set sysroot" to access files locally instead.
warning: A handler for the OS ABI "Cygwin" is not built into this configuration
of GDB.  Attempting to continue with the default arm settings.

Reading /system/bin/app_process32_original from remote target...
warning: A handler for the OS ABI "Cygwin" is not built into this configuration
of GDB.  Attempting to continue with the default arm settings.

Reading symbols from target:/system/bin/app_process32_original...(no debugging symbols found)...done.
0xb6e8b0f8 in ?? ()

使用我自己编译的gdb.exe，我得到了另一个信息

(gdb) target remote 192.168.1.13:1234
Remote debugging using 192.168.1.13:1234
warning: Can not parse XML target description; XML support was disabled at compile time
Reading /system/bin/app_process32_original from remote target...
warning: File transfers from remote targets can be slow. Use "set sysroot" to access files locally instead.
Reading /system/bin/app_process32_original from remote target...
Reading symbols from target:/system/bin/app_process32_original...(no debugging symbols found)...done.
Remote 'g' packet reply is too long: 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
0xb6e8b0f8 in ?? ()

我输入

gcore

它说

Can't create a corefile

我在/ system / bin

中安装了与我的内核架构匹配的正确gdbserver二进制文件

我在Android 4.4.4下尝试了不同的Android操作系统，它没有PIE保护功能，但我仍然遇到同样的问题。我尝试使用移植版本的gdb客户端，它运行得很好。

我只想用运行Android 5.1.1和2 GB RAM的强大设备保存核心文件，而不是在我的低端平板电脑上使用gdb客户端，该平板电脑具有512 MB RAM并运行Android 4.4.4，并且gdb无法使用由于内存不足而完全创建核心文件。

Answer 1

编译GDB时，我必须给目标--target arm-linux-androideabi而不是--target arm-eabi并且它完美无缺

Answer 2

只需下载gdb源代码并按以下步骤编译：

1）。使用以下命令编译gdb：

cd gdb-7.11/gdb
./configure --target=arm-linux-androideabi --with-python --prefix=$HOME/mybinaries/bin
make
make install

2）。使用以下命令编译gdbserver：

cd gdb-7.11/gdb/gdbserver
CC=arm-linux-androideabi-gcc LDFLAGS="-fPIC -pie" ./configure --target=arm-linux-androideabi --host=arm-linux-androideabi --prefix=$HOME/mybinaries/bin
make
make install

Android：在gdbserver

2 个答案: