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如何利用硬件watchpoint定位踩内存问题【转】
转自:http://blog.coderhuo.tech/2019/07/21/arm_hardware_breakpoint/ 本文介绍如何使用ARM平台的硬件watchpoint定位踩内存问题,特别是如何在运行过程中自动对特定内存区域添加watchpoint。 在踩内存问题中,最困难的就是找出元凶。常见的作法如下: 通过gdb打内存断点(添加watchpointgdb的一些不太容易记得的用法
基本的gdb使用 1. Note: You can also modify variables' values by set <var> = <value> 2. The command to set a simple watchpoint (a write watchpoint, i.e you are notified when the value is written) is watch <var> 3. Remember that GDB comeARM watchpoint/breakpoint registers
write_wb_reg()里的switch macro展开 4.19\arch\arm64\kernel\Hw_breakpoint.c static void write_wb_reg(int reg, int n, u64 val) { switch (reg + n) { GEN_WRITE_WB_REG_CASES(AARCH64_DBG_REG_BVR, AARCH64_DBG_REG_NAME_BVR, val); GEN_WRITE_WB_REG_CASES(AARCHIDEA Icon Description
File types To view the list of file types recognized by IntelliJ IDEA, in the Settings/Preferences dialog Ctrl+Alt+S, go to | Editor | File Types. If a file in your project is marked with the icon, it indicates that IntelliJ IDEA can't recognize it.IDEA各个图标详解
Icon Description Class Abstract class Groovy class Annotation Enumeration Exception Final Java class Interface Java class that contains declaration of the main() method. Test case Java class locatc – 是否可以通过编程方式设置gdb观察点?
我想在我的C程序中暂时设置一个观察点(硬件写入中断)来查找内存损坏. 我已经看过所有通过gdb手动完成的方法,但我想通过我的代码中的某些方法实际设置观察点,所以我不必闯入gdb,查找地址,设置观察点然后继续. 就像是: #define SET_WATCHPOINT(addr) asm ("set break on hardware wr