我可以对读GDB中断/从地址写？ [英] Can I have gdb break on read/write from an address?

问题描述

可能重复：结果
  我可以设置在广发行的存储器访问断点？

我在内存中的特定位置，这是获得损坏，我希望能够清楚地看到，当事情写入该位置。有什么办法，我可以对内存访问GDB突破到特定的地址？

I have a specific location in memory that is getting corrupted, and I'd like to be able to see exactly when things write to that location. Is there any way that I can make gdb break on memory access to that particular address?

推荐答案

是结果
使用观察点：结果
看 - 只有打破写上（且仅当值的变化）结果
rwatch - 在阅读休息，和结果
awatch - 在读/写符

Yes.
Using Watchpoints:
watch - only breaks on write (and only if the value changes)
rwatch - breaks on read, and
awatch - breaks on read/write.

这是一些网络资源的更详细的介绍：

A more detailed brief from some internet sources:

看的结果
手表是设置数据断点，如果存储在指定位置的变化，这将阻止程序的执行GDB的方式。

watch
watch is gdb’s way of setting data breakpoints which will halt the execution of a program if memory changes at the specified location.

监视断点，可以在变量名或地址位置进行设置。

watch breakpoints can either be set on the variable name or any address location.

watch my_variable
watch *0x12345678
where 0x12345678 is a valid address.

rwatch 的结果
当程序试图从一个变量或内存位置读rwatch（读表）断点突破code的执行。

rwatch
rwatch (read-watch) breakpoints break the execution of code when the program tries to read from a variable or memory location.

rwatch iWasAccessed
rwatch *0x12345678
where 0x12345678 is a valid address.

awatch 的结果
如果一个变量或存储器位置写入或读取awatch或接入手表中断程序的执行。综上所述，awatches是手表和rwatches尽在其中。它创建不是两个独立的个断点的简便方式。

awatch
awatch or access watches break execution of the program if a variable or memory location is written to or read from. In summary, awatches are watches and rwatches all in one. It is a handy way of creating one breakpoint than two separate ones.

awatch *0x12345678
where 0x12345678 is a valid address.

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