Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2025-07-31 23:53:19 +00:00
Code Issues Projects Releases Packages Wiki Activity

[NTOS] Add MxCsr handling to trap handlers

Browse source
This commit is contained in:
Timo Kreuzer 2022-07-23 13:31:48 +02:00
parent 92c798c657
commit 620f9ee71a
3 changed files with 17 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

2
sdk/include/asm/ksamd64.template.h
View file

@ -586,7 +586,7 @@ OFFSET(PcIrql, KPCR, Irql),
OFFSET(PcStallScaleFactor, KPCR, StallScaleFactor),
OFFSET(PcHalReserved, KPCR, HalReserved),
//OFFSET(PcPrcb, KPCR, Prcb),
//OFFSET(PcMxCsr, KPCR, MxCsr),
OFFSET(PcMxCsr, KIPCR, Prcb.MxCsr),
//OFFSET(PcNumber, KPCR, Number),
//OFFSET(PcInterruptRequest, KPCR, InterruptRequest),
//OFFSET(PcIdleHalt, KPCR, IdleHalt),

9
sdk/include/asm/trapamd64.inc
View file

@ -97,6 +97,9 @@ MACRO(EnterTrap, Flags)
mov [rbp + KTRAP_FRAME_SegGs], gs
endif
/* Save MCXSR */
stmxcsr [rbp + KTRAP_FRAME_MxCsr]
#if DBG
mov ecx, MSR_GS_BASE
rdmsr
@ -116,6 +119,9 @@ MACRO(EnterTrap, Flags)
mov es, ax
swapgs
/* Load kernel MXCSR */
ldmxcsr gs:[PcMxCsr]
#if DBG
/* Check IRQL */
mov rax, cr8
@ -255,6 +261,9 @@ kernel_mode_return:
movdqa xmm5, [rbp + KTRAP_FRAME_Xmm5]
endif
/* Restore MCXSR */
ldmxcsr [rbp + KTRAP_FRAME_MxCsr]
/* Restore rbp */
mov rbp, [rbp + KTRAP_FRAME_Rbp]