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| author | Gabe Black <gblack@eecs.umich.edu> | 2011-12-01 00:17:14 -0500 |
|---|---|---|
| committer | Gabe Black <gblack@eecs.umich.edu> | 2011-12-01 00:17:14 -0500 |
| commit | 93fb460faded99c640ff0d7273611932a9ebc46c (patch) | |
| tree | 053ec5dbc70e6c5fa2cea30d412eeaabe90c968b /src/arch/x86/isa | |
| parent | e436d187e75c2861ed32a31d850021543c9c20fd (diff) | |
| download | gem5-93fb460faded99c640ff0d7273611932a9ebc46c.tar.xz | |
X86: Fix a bad segmentation check for the stack segment.
--HG--
extra : rebase_source : 755f4f6eae52f88ed516a1f1ac9e2565725d89c1
Diffstat (limited to 'src/arch/x86/isa')
| -rw-r--r-- | src/arch/x86/isa/microops/regop.isa | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/src/arch/x86/isa/microops/regop.isa b/src/arch/x86/isa/microops/regop.isa index a6e0564ba..bc139a609 100644 --- a/src/arch/x86/isa/microops/regop.isa +++ b/src/arch/x86/isa/microops/regop.isa @@ -1335,16 +1335,15 @@ let {{ if (selector.si || selector.ti) { if (!desc.p) { fault = new StackFault(selector); - } - } else { - if ((m5reg.submode != SixtyFourBitMode || - m5reg.cpl == 3) || - !(desc.s == 1 && - desc.type.codeOrData == 0 && desc.type.w) || + } else if (!(desc.s == 1 && desc.type.codeOrData == 0 && + desc.type.w) || (desc.dpl != m5reg.cpl) || (selector.rpl != m5reg.cpl)) { fault = new GeneralProtection(selector); } + } else if (m5reg.submode != SixtyFourBitMode || + m5reg.cpl == 3) { + fault = new GeneralProtection(selector); } break; case SegIretCheck: |