sdongles/kolibrios
1
0
Fork 0
forked from KolibriOS/kolibrios
Code Pull Requests Activity

Fast calls

Browse Source 
* MSR protect

2kasTIgar:
Update local svn or lock files before update!

git-svn-id: svn://kolibrios.org@482 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Iliya Mihailov (Ghost) 2007-05-09 16:43:35 +00:00
parent 4847853673
commit 9104b5cebc
1 changed files with 17 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
kernel/trunk/kernel.asm
View File

@ -3321,10 +3321,23 @@ ret
wrmsr_instr: wrmsr_instr:
;now counter in ecx ;now counter in ecx
;(edx:eax) esi:edi => edx:esi ;(edx:eax) esi:edi => edx:esi
mov eax,esi ; Fast Call MSR can't be destroy
wrmsr ; Íî MSR_AMD_EFER ìîæíî èçìåíÿòü, ò.ê. â ýòîì ðåãèñòðå ëèø
mov [esp+36],eax ; âêëþ÷àþòñÿ/âûêëþ÷àþòñÿ ðàñøèðåííûå âîçìîæíîñòè
mov [esp+24],edx ;ret in ebx? cmp ecx, MSR_SYSENTER_CS
je @f
cmp ecx, MSR_SYSENTER_ESP
je @f
cmp ecx, MSR_SYSENTER_EIP
je @f
cmp ecx, MSR_AMD_STAR
je @f
mov eax, esi
wrmsr
; mov [esp + 36], eax
; mov [esp + 24], edx ;ret in ebx?
@@:
ret ret
cache_disable: cache_disable: