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X86: Fix the segment setting code in IRET, and make it restore the flags.

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Gabe Black 2008-10-12 23:05:22 -07:00
parent 349a155b6e
commit e3004c579f
1 changed files with 3 additions and 2 deletions
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5
src/arch/x86/isa/insts/general_purpose/control_transfer/interrupts_and_exceptions.py
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@ -190,8 +190,8 @@ processSSDescriptor:
# This actually updates state which is wrong. It should wait until we know
# we're not going to fault. Unfortunately, that's hard to do.
wrdl cs, t7, t2
wrsel cs, t2
wrdl ss, t7, t2
wrsel ss, t2
###
### From this point downwards, we can't fault. We can update user visible state.
@ -224,6 +224,7 @@ skipSegmentSquashing:
# Ignore this for now.
#RFLAGS.v = temp_RFLAGS
wrflags t0, t3
# VIF,VIP,IOPL only changed if (old_CPL = 0)
# IF only changed if (old_CPL <= old_RFLAGS.IOPL)
# VM unchanged