ExternalVendorCode/genode
1
0
Fork 0
mirror of https://github.com/genodelabs/genode.git synced 2025-02-20 17:52:52 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

hw_x86_64: Set system control flags of cr0 register

Browse Source 
Enable paging, write protection, caching and native FPU error reporting,
see Intel SDM Vol. 3A, section 2.5.
This commit is contained in:
Reto Buerki 2015-02-11 15:50:50 +01:00 committed by Christian Helmuth
parent 032fc3b190
commit 59bba7624f
1 changed files with 9 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
repos/base-hw/src/core/spec/x86_64/kernel/crt0.s
View File

@ -45,6 +45,15 @@
btsl $11, %eax
wrmsr
/* Enable paging, write protection, caching and FPU error reporting */
movl %cr0, %eax
btsl $5, %eax
btsl $16, %eax
btrl $29, %eax
btrl $30, %eax
btsl $31, %eax
movl %eax, %cr0
/*
* Install initial temporary environment that is replaced later by the
* environment that init_main_thread creates.