使用gdb加载内核符号表
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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
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(gdb) l * qrd7627a_add_io_devices+0x1000xc07cd05c 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_CALA021848 platform_device_register(&pmic_mpp_leds_pdev_skud);1849 #endif1850 /* enable the skud flash and torch by gpio leds driver */1851 platform_device_register(&gpio_flash_skud);1852 } else if (machine_is_msm8625q_skue()) {1853 /* enable the skue flashlight by gpio leds driver */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。
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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/vmlinuxGNU gdb (GDB) 7.3.1-gg2Copyright (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=x86_64-linux-gnu --target=arm-linux-android".For bug reporting instructions, please see:<http://source.android.com/source/report-bugs.html>...Reading symbols from /home/weiqifa/weiqifa/tm100/out/target/product/tm100/obj/KERNEL_OBJ/vmlinux...done.(gdb) |
rockchip rk3399调试vmlinux
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./prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9/bin/aarch64-linux-android-addr2line -f -e kernel/vmlinuxweiqifa@dev:~/rk3399_7in1$ ./prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9/bin/aarch64-linux-android-addr2line -f -e kernel/vmlinux ffffff8008459f3crk_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
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./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
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原文链接：https://blog.csdn.net/weiqifa0/article/details/44222929
