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authorGabe Black <gblack@eecs.umich.edu>2006-10-31 18:19:45 -0500
committerGabe Black <gblack@eecs.umich.edu>2006-10-31 18:19:45 -0500
commit39de635fbfa281c2fa70b65833825e2559d029b9 (patch)
tree8afc389cacb001b72a1d67090bbd4119b37253ab /src/arch/alpha
parent45368c03001690aa7ea697afdbfaca01477fbdb2 (diff)
downloadgem5-39de635fbfa281c2fa70b65833825e2559d029b9.tar.xz
Check for out of range IPR values as well.
--HG-- extra : convert_revision : 9ca241bb71d8a1d022e54485383a88d2abece663
Diffstat (limited to 'src/arch/alpha')
-rw-r--r--src/arch/alpha/isa/decoder.isa9
1 files changed, 6 insertions, 3 deletions
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