Changeset 60891 in vbox for trunk/include/VBox/vmm

Timestamp:

May 9, 2016 12:55:50 PM (9 years ago)

Author:

vboxsync

Message:

TRPM,CPUM: Return to v8086 mode fixes.

We may have entered from protected mode and be returning to V8086 mode, so the larger V8086 frame always has to be pushed. TRPM should call CPUMGCCallV86Code instead of duplicating the code.
We must clear the valid bit in all the selectors when returning to v8086 mode to make sure we reload the hidden bits the next time we need them, since v8086 and protect mode are very different and our checks could get confused.

File:

trunk/include/VBox/vmm/cpum.mac

-              r55738
+              r60891
+%define CPUMSELREG_FLAGS_VALID      0x0001
+%define CPUMSELREG_FLAGS_STALE      0x0002
+%define CPUMSELREG_FLAGS_VALID_MASK 0x0003
 ;;
 ; Guest MSR state.

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