arno/linux-insides
1
0
Fork 0
mirror of https://github.com/0xAX/linux-insides.git synced 2024-12-22 06:38:07 +00:00
Code Issues Releases Wiki Activity

In the following expression, we add the value of phys_base to the

Browse Source 
rax register, not the address of phys_base.
addq    phys_base(%rip), %rax

BTW, the value of phys_base =
the actual loaded physical address of kernel after relocation - the
likned physical address of kernel.

Signed-off-by: Firo Yang <firogh@gmail.com>
This commit is contained in:
Firo Yang 2017-11-29 16:21:45 +08:00
parent abf4f684a5
commit 723b07605c
2 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Initialization/linux-initialization-1.md
View File

@ -270,7 +270,7 @@ That's all for now. Our early paging is prepared and we just need to finish last
Last preparation before jump at the kernel entry point
--------------------------------------------------------------------------------
After that we jump to the label `1` we enable `PAE`, `PGE` (Paging Global Extension) and put the physical address of the `phys_base` (see above) to the `rax` register and fill `cr3` register with it:
After that we jump to the label `1` we enable `PAE`, `PGE` (Paging Global Extension) and put the content of the `phys_base` (see above) to the `rax` register and fill `cr3` register with it:
```assembly
1:

1
contributors.md
View File

@ -111,3 +111,4 @@ Thank you to all contributors:
* [Cornelius Diekmann](https://github.com/diekmann)
* [Andrés Rojas](https://github.com/c0r3dump3d)
* [Beomsu Kim](https://github.com/0xF0D0)
* [Firo Yang](https://github.com/firogh)