Linux加载vmlinux调试

使用gdb加载内核符号表

arm-eabi-gdb out/target/product/msm8625/obj/KERNEL_OBJ/vmlinux

在内核的.config里面要打开 DEBUG_INFO和DEBUG_VM

定位故障代码

(gdb) l * qrd7627a_add_io_devices+0x100
0xc07cd05c is in qrd7627a_add_io_devices (/home/yejialong/GH700C/kernel/arch/arm/mach-msm/msm8x25/goso-msm7627a-io.c:1851).
1846      } else if (machine_is_msm8625q_skud() || machine_is_msm8625q_evbd()) {
1847    #ifndef CONFIG_CALA02
1848   platform_device_register(&pmic_mpp_leds_pdev_skud);
1849    #endif
1850   
1851   platform_device_register(&gpio_flash_skud);
1852      } else if (machine_is_msm8625q_skue()) {
1853    
1854   platform_device_register(&gpio_flash_skue);
1855      }

下面是mtk平台加载的方法，但是不管哪个平台都是差不多的，道理都是一样的。

weiqifa@weiqifa-Inspiron-3847:~/weiqifa/tm100$ ./prebuilts/gcc/linux-x86/arm/arm-eabi-4.7/bin/arm-eabi-gdb ./out/target/product/tm100/obj/KERNEL_OBJ/vmlinux
GNU gdb (GDB) 7.3.1-gg2
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later 
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=x86_64-linux-gnu --target=arm-linux-android".
For bug reporting instructions, please see:
...
Reading symbols from /home/weiqifa/weiqifa/tm100/out/target/product/tm100/obj/KERNEL_OBJ/vmlinux...done.
(gdb)

rockchip rk3399调试vmlinux

./prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9/bin/aarch64-linux-android-addr2line -f -e kernel/vmlinux
weiqifa@dev:~/rk3399_7in1$ ./prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9/bin/aarch64-linux-android-addr2line -f -e kernel/vmlinux ffffff8008459f3c
rk_iommu_domain_free
/data/weiqifa/rk3399_7in1/kernel/drivers/iommu/rockchip-iommu.c:1005 (discriminator 2)
weiqifa@dev:~/rk3399_7in1$

RK平台tombstone调试

./prebuilts/gcc/linux-x86/arm/arm-eabi-4.8/bin/arm-eabi-addr2line -e ./out/target/product/rk3399_mid/symbols/system/lib/libspeexresampler.so 0x00002d54
/proc/self/cwd/external/speex/libspeex/resample.c:376

arm-eabi-gdb  先用命令找到这个东西，然后在去找去找到vmlinux  还有就是我arm-eabi-4.7/ 这个版本才可以用，这个是我试出来的。

总结

以上就是这篇文章的全部内容了，希望本文的内容对大家的学习或者工作具有一定的参考学习价值，谢谢大家对考高分网的支持。如果你想了解更多相关内容请查看下面相关链接