Add a hack to truncate addresses to 32 bits in SE. Paging should be changed to use the architecture's TLB, at which point this can be removed.

--HG--
extra : convert_revision : 54f3c18e5aead727d0ac244ed00fd97d3ca8ad75

src/arch/sparc/isa/formats/mem/basicmem.isa

@@ -57,10 +57,12 @@ let {{
         addrCalcImm = 'EA = Rs1 + imm;'
         iop = InstObjParams(name, Name, 'Mem',
                 {"code": code, "postacc_code" : postacc_code,
-                 "fault_check": faultCode, "ea_code": addrCalcReg}, opt_flags)
+                 "fault_check": faultCode, "ea_code": addrCalcReg,
+                 "EA_trunc": TruncateEA}, opt_flags)
         iop_imm = InstObjParams(name, Name + "Imm", 'MemImm',
                 {"code": code, "postacc_code" : postacc_code,
-                "fault_check": faultCode, "ea_code": addrCalcImm}, opt_flags)
+                 "fault_check": faultCode, "ea_code": addrCalcImm,
+                 "EA_trunc": TruncateEA}, opt_flags)
         header_output = MemDeclare.subst(iop) + MemDeclare.subst(iop_imm)
         decoder_output = BasicConstructor.subst(iop) + BasicConstructor.subst(iop_imm)
         decode_block = ROrImmDecode.subst(iop)

src/arch/sparc/isa/formats/mem/blockmem.isa

@@ -298,11 +298,13 @@ let {{
             iop = InstObjParams(name, Name, 'BlockMem',
                     {"code": pcedCode, "ea_code": addrCalcReg,
                     "fault_check": faultCode, "micro_pc": microPc,
-                    "set_flags": flag_code}, opt_flags)
+                    "set_flags": flag_code, "EA_trunc" : TruncateEA},
+                    opt_flags)
             iop_imm = InstObjParams(name, Name + 'Imm', 'BlockMemImm',
                     {"code": pcedCode, "ea_code": addrCalcImm,
                     "fault_check": faultCode, "micro_pc": microPc,
-                    "set_flags": flag_code}, opt_flags)
+                    "set_flags": flag_code, "EA_trunc" : TruncateEA},
+                    opt_flags)
             decoder_output += BlockMemMicroConstructor.subst(iop)
             decoder_output += BlockMemMicroConstructor.subst(iop_imm)
             exec_output += doDualSplitExecute(

src/arch/sparc/isa/formats/mem/swap.isa

@@ -51,6 +51,7 @@ def template SwapExecute {{
             }
             if(storeCond && fault == NoFault)
             {
+                %(EA_trunc)s
                 fault = xc->write((uint%(mem_acc_size)s_t)Mem,
                         EA, %(asi_val)s, &mem_data);
             }
@@ -91,6 +92,7 @@ def template SwapInitiateAcc {{
             }
             if(fault == NoFault)
             {
+                %(EA_trunc)s
                 fault = xc->write((uint%(mem_acc_size)s_t)Mem,
                         EA, %(asi_val)s, &mem_data);
             }
@@ -157,12 +159,14 @@ let {{
         addrCalcReg = 'EA = Rs1;'
         iop = InstObjParams(name, Name, 'Mem',
                 {"code": code, "postacc_code" : postacc_code,
-                 "fault_check": faultCode, "ea_code": addrCalcReg}, opt_flags)
+                 "fault_check": faultCode, "ea_code": addrCalcReg,
+                 "EA_trunc" : TruncateEA}, opt_flags)
         header_output = MemDeclare.subst(iop)
         decoder_output = BasicConstructor.subst(iop)
         decode_block = BasicDecode.subst(iop)
         microParams = {"code": code, "postacc_code" : postacc_code,
-            "ea_code" : addrCalcReg, "fault_check" : faultCode}
+            "ea_code" : addrCalcReg, "fault_check" : faultCode,
+            "EA_trunc" : TruncateEA}
         exec_output = doSplitExecute(execute, name, Name, asi,
                 ["IsStoreConditional"], microParams);
         return (header_output, decoder_output, exec_output, decode_block)

src/arch/sparc/isa/formats/mem/util.isa

@@ -149,6 +149,7 @@ def template LoadExecute {{
             %(fault_check)s;
             if(fault == NoFault)
             {
+                %(EA_trunc)s
                 fault = xc->read(EA, (%(mem_acc_type)s%(mem_acc_size)s_t&)Mem, %(asi_val)s);
             }
             if(fault == NoFault)
@@ -179,6 +180,7 @@ def template LoadInitiateAcc {{
             %(fault_check)s;
             if(fault == NoFault)
             {
+                %(EA_trunc)s
                 fault = xc->read(EA, (%(mem_acc_type)s%(mem_acc_size)s_t&)Mem, %(asi_val)s);
             }
             return fault;
@@ -224,6 +226,7 @@ def template StoreExecute {{
             }
             if(storeCond && fault == NoFault)
             {
+                %(EA_trunc)s
                 fault = xc->write((%(mem_acc_type)s%(mem_acc_size)s_t)Mem,
                         EA, %(asi_val)s, 0);
             }
@@ -257,6 +260,7 @@ def template StoreInitiateAcc {{
             }
             if(storeCond && fault == NoFault)
             {
+                %(EA_trunc)s
                 fault = xc->write((%(mem_acc_type)s%(mem_acc_size)s_t)Mem,
                         EA, %(asi_val)s, 0);
             }
@@ -317,6 +321,11 @@ let {{
             fault = new PrivilegedAction;
     '''
 
+    TruncateEA = '''
+#if !FULL_SYSTEM
+                EA = Pstate<3:> ? EA<31:0> : EA;
+#endif
+    '''
 }};
 
 //A simple function to generate the name of the macro op of a certain
@@ -346,7 +355,8 @@ let {{
                 (eaRegCode, nameReg, NameReg),
                 (eaImmCode, nameImm, NameImm)):
             microParams = {"code": code, "postacc_code" : postacc_code,
-                "ea_code": eaCode, "fault_check": faultCode}
+                "ea_code": eaCode, "fault_check": faultCode,
+                "EA_trunc" : TruncateEA}
             executeCode += doSplitExecute(execute, name, Name,
                     asi, opt_flags, microParams)
         return executeCode

src/arch/sparc/process.cc

@@ -87,8 +87,8 @@ Sparc32LiveProcess::startup()
 
     //From the SPARC ABI
 
-    //The process runs in user mode
-    threadContexts[0]->setMiscReg(MISCREG_PSTATE, 0x02);
+    //The process runs in user mode with 32 bit addresses
+    threadContexts[0]->setMiscReg(MISCREG_PSTATE, 0x0a);
 
     //Setup default FP state
     threadContexts[0]->setMiscRegNoEffect(MISCREG_FSR, 0);