3 files changed, 20 insertions, 9 deletions

diff --git a/src/cpu/o3/lsq_unit_impl.hh b/src/cpu/o3/lsq_unit_impl.hh
index d558e2dfa..44e2cea76 100644
--- a/src/cpu/o3/lsq_unit_impl.hh
+++ b/src/cpu/o3/lsq_unit_impl.hh
@@ -647,7 +647,8 @@ LSQUnit<Impl>::writebackStores()
 
         memcpy(inst->memData, storeQueue[storeWBIdx].data, req->getSize());
 
-        PacketPtr data_pkt = new Packet(req, MemCmd::WriteReq,
+        MemCmd command = req->isSwap() ? MemCmd::SwapReq : MemCmd::WriteReq;
+        PacketPtr data_pkt = new Packet(req, command,
                                         Packet::Broadcast);
         data_pkt->dataStatic(inst->memData);
 
@@ -664,7 +665,7 @@ LSQUnit<Impl>::writebackStores()
                 inst->seqNum);
 
         // @todo: Remove this SC hack once the memory system handles it.
-        if (req->isLocked()) {
+        if (inst->isStoreConditional()) {
             // Disable recording the result temporarily.  Writing to
             // misc regs normally updates the result, but this is not
             // the desired behavior when handling store conditionals.
diff --git a/src/cpu/o3/regfile.hh b/src/cpu/o3/regfile.hh
index bbc69fc96..b5b1cd021 100644
--- a/src/cpu/o3/regfile.hh
+++ b/src/cpu/o3/regfile.hh
@@ -174,7 +174,7 @@ class PhysRegFile
         // Remove the base Float reg dependency.
         reg_idx = reg_idx - numPhysicalIntRegs;
 
-        assert(reg_idx < numPhysicalFloatRegs + numPhysicalIntRegs);
+        assert(reg_idx < numPhysicalFloatRegs);
 
         DPRINTF(IEW, "RegFile: Setting float register %i to %#x\n",
                 int(reg_idx), (uint64_t)val);
@@ -189,7 +189,7 @@ class PhysRegFile
         // Remove the base Float reg dependency.
         reg_idx = reg_idx - numPhysicalIntRegs;
 
-        assert(reg_idx < numPhysicalFloatRegs + numPhysicalIntRegs);
+        assert(reg_idx < numPhysicalFloatRegs);
 
         DPRINTF(IEW, "RegFile: Setting float register %i to %#x\n",
                 int(reg_idx), (uint64_t)val);
@@ -204,7 +204,7 @@ class PhysRegFile
         // Remove the base Float reg dependency.
         reg_idx = reg_idx - numPhysicalIntRegs;
 
-        assert(reg_idx < numPhysicalFloatRegs + numPhysicalIntRegs);
+        assert(reg_idx < numPhysicalFloatRegs);
 
         DPRINTF(IEW, "RegFile: Setting float register %i to %#x\n",
                 int(reg_idx), (uint64_t)val);
@@ -217,7 +217,7 @@ class PhysRegFile
         // Remove the base Float reg dependency.
         reg_idx = reg_idx - numPhysicalIntRegs;
 
-        assert(reg_idx < numPhysicalFloatRegs + numPhysicalIntRegs);
+        assert(reg_idx < numPhysicalFloatRegs);
 
         DPRINTF(IEW, "RegFile: Setting float register %i to %#x\n",
                 int(reg_idx), (uint64_t)val);
@@ -232,11 +232,11 @@ class PhysRegFile
 
     MiscReg readMiscReg(int misc_reg, unsigned thread_id)
     {
-        return miscRegs[thread_id].readReg(misc_reg,
-                                                     cpu->tcBase(thread_id));
+        return miscRegs[thread_id].readReg(misc_reg, cpu->tcBase(thread_id));
     }
 
-    void setMiscRegNoEffect(int misc_reg, const MiscReg &val, unsigned thread_id)
+    void setMiscRegNoEffect(int misc_reg,
+            const MiscReg &val, unsigned thread_id)
     {
         miscRegs[thread_id].setRegNoEffect(misc_reg, val);
     }
diff --git a/src/cpu/o3/rename_impl.hh b/src/cpu/o3/rename_impl.hh
index c0d34116d..6b7fb1e08 100644
--- a/src/cpu/o3/rename_impl.hh
+++ b/src/cpu/o3/rename_impl.hh
@@ -996,7 +996,12 @@ DefaultRename<Impl>::renameSrcRegs(DynInstPtr &inst,unsigned tid)
         if (src_reg < TheISA::FP_Base_DepTag) {
             flat_src_reg = TheISA::flattenIntIndex(inst->tcBase(), src_reg);
             DPRINTF(Rename, "Flattening index %d to %d.\n", (int)src_reg, (int)flat_src_reg);
+        } else {
+            // Floating point and Miscellaneous registers need their indexes
+            // adjusted to account for the expanded number of flattened int regs.
+            flat_src_reg = src_reg - TheISA::FP_Base_DepTag + TheISA::NumIntRegs;
         }
+
         inst->flattenSrcReg(src_idx, flat_src_reg);
 
         // Look up the source registers to get the phys. register they've
@@ -1033,8 +1038,13 @@ DefaultRename<Impl>::renameDestRegs(DynInstPtr &inst,unsigned tid)
         RegIndex dest_reg = inst->destRegIdx(dest_idx);
         RegIndex flat_dest_reg = dest_reg;
         if (dest_reg < TheISA::FP_Base_DepTag) {
+            // Integer registers are flattened.
             flat_dest_reg = TheISA::flattenIntIndex(inst->tcBase(), dest_reg);
             DPRINTF(Rename, "Flattening index %d to %d.\n", (int)dest_reg, (int)flat_dest_reg);
+        } else {
+            // Floating point and Miscellaneous registers need their indexes
+            // adjusted to account for the expanded number of flattened int regs.
+            flat_dest_reg = dest_reg - TheISA::FP_Base_DepTag + TheISA::NumIntRegs;
         }
 
         inst->flattenDestReg(dest_idx, flat_dest_reg);