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Linux加載vmlinux調(diào)試

更新時(shí)間：2019年02月01日 10:42:41 作者：碼農(nóng)-嵌入式Linux

今天小編就為大家分享一篇關(guān)于Linux加載vmlinux調(diào)試，小編覺(jué)得內(nèi)容挺不錯(cuò)的，現(xiàn)在分享給大家，具有很好的參考價(jià)值，需要的朋友一起跟隨小編來(lái)看看吧

使用gdb加載內(nèi)核符號(hào)表

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

在內(nèi)核的.config里面要打開(kāi) DEBUG_INFO和DEBUG_VM

定位故障代碼

(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          /* 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平臺(tái)加載的方法，但是不管哪個(gè)平臺(tái)都是差不多的，道理都是一樣的。

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 <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調(diào)試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平臺(tái)tombstone調(diào)試

./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 先用命令找到這個(gè)東西，然后在去找去找到vmlinux 還有就是我arm-eabi-4.7/ 這個(gè)版本才可以用，這個(gè)是我試出來(lái)的。

總結(jié)

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