-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
docs/zh_CN: add parisc debugging.rst translation
This patch translates Documentation/parisc/debugging.rst into Chinese. Signed-off-by: Yanteng Si <siyanteng@loongson.cn> Link: https://lore.kernel.org/r/32661b39374f012442b760444ef149afcc0d22af.1620805100.git.siyanteng@loongson.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
- Loading branch information
Yanteng Si
authored and
Jonathan Corbet
committed
May 20, 2021
1 parent
fa5b8fe
commit b24247d
Showing
2 changed files
with
47 additions
and
1 deletion.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,42 @@ | ||
.. include:: ../disclaimer-zh_CN.rst | ||
|
||
:Original: Documentation/parisc/debugging.rst | ||
:Translator: Yanteng Si <siyanteng@loongson.cn> | ||
|
||
.. _cn_parisc_debugging: | ||
|
||
================= | ||
调试PA-RISC | ||
================= | ||
|
||
好吧,这里有一些关于调试linux/parisc的较底层部分的信息。 | ||
|
||
|
||
1. 绝对地址 | ||
===================== | ||
|
||
很多汇编代码目前运行在实模式下,这意味着会使用绝对地址,而不是像内核其他 | ||
部分那样使用虚拟地址。要将绝对地址转换为虚拟地址,你可以在System.map中查 | ||
找,添加__PAGE_OFFSET(目前是0x10000000)。 | ||
|
||
|
||
2. HPMCs | ||
======== | ||
|
||
当实模式的代码试图访问不存在的内存时,会出现HPMC(high priority machine | ||
check)而不是内核oops。若要调试HPMC,请尝试找到系统响应程序/请求程序地址。 | ||
系统请求程序地址应该与(某)处理器的HPA(I/O范围内的高地址)相匹配;系统响应程 | ||
序地址是实模式代码试图访问的地址。 | ||
|
||
系统响应程序地址的典型值是大于__PAGE_OFFSET (0x10000000)的地址,这意味着 | ||
在实模式试图访问它之前,虚拟地址没有被翻译成物理地址。 | ||
|
||
|
||
3. 有趣的Q位 | ||
============ | ||
|
||
某些非常关键的代码必须清除PSW中的Q位。当Q位被清除时,CPU不会更新中断处理 | ||
程序所读取的寄存器,以找出机器被中断的位置——所以如果你在清除Q位的指令和再 | ||
次设置Q位的RFI之间遇到中断,你不知道它到底发生在哪里。如果你幸运的话,IAOQ | ||
会指向清除Q位的指令,如果你不幸运的话,它会指向任何地方。通常Q位的问题会 | ||
表现为无法解释的系统挂起或物理内存越界。 |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters