4 files changed, 34 insertions, 3 deletions

diff --git a/src/cuda-sim/cuda-sim.cc b/src/cuda-sim/cuda-sim.cc
index e0cd3f9..b85ba95 100644
--- a/src/cuda-sim/cuda-sim.cc
+++ b/src/cuda-sim/cuda-sim.cc
@@ -1270,6 +1270,7 @@ void function_info::ptx_jit_config(std::map<unsigned long long, size_t> mallocPt
                 assert(param.find("<")==std::string::npos);
                 assert(param.find("*")==std::string::npos);
             }   
+            printf("%s\n", param.c_str());
             if(param.find("*")!=std::string::npos){
                 paramIsPointer.push_back(true);
             }else{                                                                                 
@@ -1288,7 +1289,7 @@ void function_info::ptx_jit_config(std::map<unsigned long long, size_t> mallocPt
         param_t param_value = p.get_value();
         offsets.push_back((unsigned)p.get_offset());
 
-        if (paramIsPointer[i->first]){
+        if (paramIsPointer[i->first] && (*(unsigned long long*)param_value.pdata != 0)){
             //is pointer
             assert(param_value.size==sizeof(void*)&&"MisID'd this param as pointer");
             size_t array_size = 0;
diff --git a/src/cuda-sim/instructions.cc b/src/cuda-sim/instructions.cc
index fe36902..31fc434 100644
--- a/src/cuda-sim/instructions.cc
+++ b/src/cuda-sim/instructions.cc
@@ -1459,7 +1459,34 @@ void breakaddr_impl( const ptx_instruction *pI, ptx_thread_info *thread )
    assert(pI->has_pred() == false); // pdom analysis cannot handle if this instruction is predicated 
 }
 
-void brev_impl( const ptx_instruction *pI, ptx_thread_info *thread ) { inst_not_implemented(pI); }
+void brev_impl( const ptx_instruction *pI, ptx_thread_info *thread )
+{
+    ptx_reg_t src1_data, data;
+    const operand_info &dst  = pI->dst();
+    const operand_info &src1 = pI->src1();
+	unsigned i_type = pI->get_type();
+    src1_data = thread->get_operand_value(src1, dst, i_type, thread, 1);
+
+    unsigned msb;
+    switch(i_type){
+        case B32_TYPE:
+            msb = 31;
+            for (unsigned i=0; i<=msb; i++) {
+                if((src1_data.u32 & (1 << i)))
+                    data.u32 |= 1 << (msb - i);
+            }
+            break;
+        case B64_TYPE:
+            msb = 63;
+            for (unsigned i=0; i<=msb; i++) {
+                if((src1_data.u64 & (1 << i)))
+                    data.u64 |= 1 << (msb - i);
+            }
+            break;
+        default: assert(0);
+    }
+    thread->set_operand_value(dst,data, i_type, thread, pI);
+}
 void brkpt_impl( const ptx_instruction *pI, ptx_thread_info *thread ) { inst_not_implemented(pI); }
 
 void call_impl( const ptx_instruction *pI, ptx_thread_info *thread ) 
diff --git a/src/cuda-sim/ptx_ir.h b/src/cuda-sim/ptx_ir.h
index e726ab9..768b3e7 100644
--- a/src/cuda-sim/ptx_ir.h
+++ b/src/cuda-sim/ptx_ir.h
@@ -1297,6 +1297,7 @@ public:
       unsigned offset = 0;
       if (m_param_configs.size()>0){
           unsigned offset_nom = m_param_configs.back().first + m_param_configs.back().second;
+          //ensure offset matches alignment requirements
           offset = offset_nom%alignment ? (offset_nom/alignment + 1) * alignment : offset_nom;
       }
       m_param_configs.push_back(std::pair<size_t,unsigned>(size, offset));
diff --git a/src/cuda-sim/ptx_parser.cc b/src/cuda-sim/ptx_parser.cc
index e6d6325..0ba9a5b 100644
--- a/src/cuda-sim/ptx_parser.cc
+++ b/src/cuda-sim/ptx_parser.cc
@@ -571,7 +571,9 @@ void add_function_arg()
    if( g_func_info ) {
       PTX_PARSE_DPRINTF("add_function_arg \"%s\"", g_last_symbol->name().c_str() );
       g_func_info->add_arg(g_last_symbol);
-      g_func_info->add_config_param( g_size, g_alignment_spec );
+      unsigned alignment = (g_alignment_spec==-1) ? g_size : g_alignment_spec;
+      assert(alignment==1||alignment==2||alignment==4||alignment==8||alignment==16);//known valid alignment values
+      g_func_info->add_config_param( g_size,  alignment);
    }
 
 }