Question

我想从 u-boot图像中提取内核符号

最终目标是使用 gdb

调试系统调用

内核使用CONFIG_DEBUG_INFO=y进行编译， gcc 正在使用 -g 选项（我已选中）

make uImage后，我：

# file arch/arm/boot/*
arch/arm/boot/bootp:           directory
arch/arm/boot/compressed:      directory
arch/arm/boot/Image:           data
arch/arm/boot/install.sh:      POSIX shell script text executable
arch/arm/boot/Makefile:        ASCII English text
arch/arm/boot/uImage:          u-boot legacy uImage, Linux-3.0.6, Linux/ARM, OS Kernel Image (Not compressed), 3044476 bytes, Thu Mar 22 18:13:40 2012, Load Address: 0x00008000, Entry Point: 0x00008000, Header CRC: 0xF689B805, Data CRC: 0x6BFE76DF
arch/arm/boot/zImage:          data

gdb 无法直接加载 uImage

我尝试了这个脚本http://forum.xda-developers.com/showthread.php?t=901152。

# file arch/arm/boot/zImage_unpacked/*
arch/arm/boot/zImage_unpacked/decompression_code:     data
arch/arm/boot/zImage_unpacked/initramfs.cpio+part3:   data
arch/arm/boot/zImage_unpacked/kernel.img:             data
arch/arm/boot/zImage_unpacked/padding_piggy:          data
arch/arm/boot/zImage_unpacked/piggy:                  data
arch/arm/boot/zImage_unpacked/piggy.gz:               gzip compressed data, from Unix, max compression
arch/arm/boot/zImage_unpacked/piggy.gz+piggy_trailer: gzip compressed data, from Unix, max compression
arch/arm/boot/zImage_unpacked/piggy_trailer:          data
arch/arm/boot/zImage_unpacked/sizes:                  ASCII text

gdb 无法加载 kernel.img

Answer 1

make vmlinux。我相信GDB可以读取它，但是自从我尝试以来，它已经很长时间了很多内核版本。

编辑：哦，我应该说，vmlinux和uImage应该是相同的，但包装方式不同。如果情况并非如此，那么这将不起作用。

如何从uImage（arm）中提取内核符号？

1 个答案: