From 39de635fbfa281c2fa70b65833825e2559d029b9 Mon Sep 17 00:00:00 2001 From: Gabe Black Date: Tue, 31 Oct 2006 18:19:45 -0500 Subject: Check for out of range IPR values as well. --HG-- extra : convert_revision : 9ca241bb71d8a1d022e54485383a88d2abece663 --- src/arch/alpha/isa/decoder.isa | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'src/arch/alpha/isa') diff --git a/src/arch/alpha/isa/decoder.isa b/src/arch/alpha/isa/decoder.isa index 550aa62a3..e4cf96767 100644 --- a/src/arch/alpha/isa/decoder.isa +++ b/src/arch/alpha/isa/decoder.isa @@ -745,8 +745,10 @@ decode OPCODE default Unknown::unknown() { 0: OpcdecFault::hw_mfpr(); format HwMoveIPR { 1: hw_mfpr({{ - int miscRegIndex = IprToMiscRegIndex[ipr_index]; - if(miscRegIndex < 0 || !IprIsReadable(miscRegIndex)) + miscRegIndex >= NumInternalProcRegs) + int miscRegIndex = (ipr_index < NumInternalProcRegs) ? + IprToMiscRegIndex[ipr_index] : -1; + if(miscRegIndex < 0 || !IprIsReadable(miscRegIndex) || fault = new UnimplementedOpcodeFault; else Ra = xc->readMiscRegWithEffect(miscRegIndex, fault); @@ -758,7 +760,8 @@ decode OPCODE default Unknown::unknown() { 0: OpcdecFault::hw_mtpr(); format HwMoveIPR { 1: hw_mtpr({{ - int miscRegIndex = IprToMiscRegIndex[ipr_index]; + int miscRegIndex = (ipr_index < NumInternalProcRegs) ? + IprToMiscRegIndex[ipr_index] : -1; if(miscRegIndex < 0 || !IprIsWritable(miscRegIndex)) fault = new UnimplementedOpcodeFault; else -- cgit v1.2.3