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[ASM:X64] Save GS base MSR in trap frame

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This commit is contained in:
Timo Kreuzer 2019-04-14 19:18:38 +02:00
parent 8ec888487a
commit 7e6dce6aa1
1 changed files with 7 additions and 0 deletions
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7
sdk/include/asm/trapamd64.inc
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@ -97,6 +97,13 @@ MACRO(EnterTrap, Flags)
mov [rbp + KTRAP_FRAME_SegGs], gs
endif
#if DBG
mov ecx, MSR_GS_BASE
rdmsr
mov [rbp + KTRAP_FRAME_GsBase], eax
mov [rbp + KTRAP_FRAME_GsBase + 4], edx
#endif
/* Save previous mode and check if it was user mode */
mov ax, [rbp + KTRAP_FRAME_SegCs]
and al, 1