Merge branch 'dev' of https://github.com/purdue-aalp/gpgpu-sim_distribution into dev-private

22 files changed, 1256 insertions, 1096 deletions

diff --git a/src/cuda-sim/Makefile b/src/cuda-sim/Makefile
index 999dad7..85d1c8c 100644
--- a/src/cuda-sim/Makefile
+++ b/src/cuda-sim/Makefile
@@ -79,16 +79,16 @@ libgpgpu_ptx_sim.a: $(OBJS)
 	ar rcs $(OUTPUT_DIR)/libgpgpu_ptx_sim.a $(OUTPUT_DIR)/ptx.tab.o $(OUTPUT_DIR)/lex.ptx_.o $(OUTPUT_DIR)/ptxinfo.tab.o $(OUTPUT_DIR)/lex.ptxinfo_.o $(OBJS)
 
 $(OUTPUT_DIR)/ptx.tab.o: $(OUTPUT_DIR)/ptx.tab.c
-	$(CPP) -c $(OPT) -DYYDEBUG $(OUTPUT_DIR)/ptx.tab.c -o $(OUTPUT_DIR)/ptx.tab.o
+	$(CPP) -c $(CXX_OPT) -DYYDEBUG $(OUTPUT_DIR)/ptx.tab.c -o $(OUTPUT_DIR)/ptx.tab.o
 
 $(OUTPUT_DIR)/lex.ptx_.o: $(OUTPUT_DIR)/lex.ptx_.c 
-	$(CPP) -c $(OPT) $(OUTPUT_DIR)/lex.ptx_.c -o $(OUTPUT_DIR)/lex.ptx_.o
+	$(CPP) -c $(CXX_OPT) $(OUTPUT_DIR)/lex.ptx_.c -o $(OUTPUT_DIR)/lex.ptx_.o
 
 $(OUTPUT_DIR)/ptxinfo.tab.o: $(OUTPUT_DIR)/ptxinfo.tab.c
-	$(CPP) -c $(OPT) -DYYDEBUG $(OUTPUT_DIR)/ptxinfo.tab.c -o $(OUTPUT_DIR)/ptxinfo.tab.o
+	$(CPP) -c $(CXX_OPT) -DYYDEBUG $(OUTPUT_DIR)/ptxinfo.tab.c -o $(OUTPUT_DIR)/ptxinfo.tab.o
 
 $(OUTPUT_DIR)/lex.ptxinfo_.o: $(OUTPUT_DIR)/lex.ptxinfo_.c $(OUTPUT_DIR)/ptxinfo.tab.c
-	$(CPP) -c $(OPT) $(OUTPUT_DIR)/lex.ptxinfo_.c -o $(OUTPUT_DIR)/lex.ptxinfo_.o
+	$(CPP) -c $(CXX_OPT) $(OUTPUT_DIR)/lex.ptxinfo_.c -o $(OUTPUT_DIR)/lex.ptxinfo_.o
 
 $(OUTPUT_DIR)/ptx.tab.c: ptx.y
 	bison --name-prefix=ptx_ -v -d ptx.y --file-prefix=$(OUTPUT_DIR)/ptx
diff --git a/src/cuda-sim/cuda-math.h b/src/cuda-sim/cuda-math.h
index a5db337..9a5468c 100644
--- a/src/cuda-sim/cuda-math.h
+++ b/src/cuda-sim/cuda-math.h
@@ -277,10 +277,10 @@ int float2int(float a, enum cudaRoundMode mode)
 {
    int tmp;
    switch (mode) {
-   case cuda_math::cudaRoundZero: tmp = truncf(a);     break;
-   case cuda_math::cudaRoundNearest: tmp = nearbyintf(a); break;
-   case cuda_math::cudaRoundMinInf: tmp = floorf(a);     break;
-   case cuda_math::cudaRoundPosInf: tmp = ceilf(a);      break;
+   case cudaRoundZero: tmp = truncf(a);     break;
+   case cudaRoundNearest: tmp = nearbyintf(a); break;
+   case cudaRoundMinInf: tmp = floorf(a);     break;
+   case cudaRoundPosInf: tmp = ceilf(a);      break;
    default: abort();
    }
    return tmp; 
@@ -296,10 +296,10 @@ unsigned int float2uint(float a, enum cudaRoundMode mode)
 {
    unsigned int tmp;
    switch (mode) {
-   case cuda_math::cudaRoundZero: tmp = truncf(a);     break;
-   case cuda_math::cudaRoundNearest: tmp = nearbyintf(a); break;
-   case cuda_math::cudaRoundMinInf: tmp = floorf(a);     break;
-   case cuda_math::cudaRoundPosInf: tmp = ceilf(a);      break;
+   case cudaRoundZero: tmp = truncf(a);     break;
+   case cudaRoundNearest: tmp = nearbyintf(a); break;
+   case cudaRoundMinInf: tmp = floorf(a);     break;
+   case cudaRoundPosInf: tmp = ceilf(a);      break;
    default: abort();
    }
    return tmp; 
diff --git a/src/cuda-sim/cuda-sim.cc b/src/cuda-sim/cuda-sim.cc
index 4c0fc58..1b0e841 100644
--- a/src/cuda-sim/cuda-sim.cc
+++ b/src/cuda-sim/cuda-sim.cc
@@ -30,6 +30,8 @@
 
 #include "instructions.h"
 #include "ptx_ir.h"
+class ptx_recognizer;
+typedef void * yyscan_t;
 #include "ptx.tab.h"
 #include "ptx_sim.h"
 #include <stdio.h>
@@ -49,27 +51,13 @@
 #include "decuda_pred_table/decuda_pred_table.h"
 #include "../stream_manager.h"
 #include "cuda_device_runtime.h"
+#include "../../libcuda/gpgpu_context.h"
 
-int gpgpu_ptx_instruction_classification;
-void ** g_inst_classification_stat = NULL;
-void ** g_inst_op_classification_stat= NULL;
-int g_ptx_kernel_count = -1; // used for classification stat collection purposes 
 int g_debug_execution = 0;
-int g_debug_thread_uid = 0;
-addr_t g_debug_pc = 0xBEEF1518;
 // Output debug information to file options
-int cp_count;
-int cp_cta_resume;
 
-unsigned g_ptx_sim_num_insn = 0;
-unsigned gpgpu_param_num_shaders = 0;
 
-char *opcode_latency_int, *opcode_latency_fp, *opcode_latency_dp,*opcode_latency_sfu,*opcode_latency_tensor;
-char *opcode_initiation_int, *opcode_initiation_fp, *opcode_initiation_dp,*opcode_initiation_sfu,*opcode_initiation_tensor;
-char *cdp_latency_str;
-unsigned cdp_latency[5];
-
-void ptx_opcocde_latency_options (option_parser_t opp) {
+void cuda_sim::ptx_opcocde_latency_options (option_parser_t opp) {
 	option_parser_register(opp, "-ptx_opcode_latency_int", OPT_CSTR, &opcode_latency_int,
 			"Opcode latencies for integers <ADD,MAX,MUL,MAD,DIV>"
 			"Default 1,1,19,25,145",
@@ -118,8 +106,6 @@ cudaLaunchDeviceV2_init_perWarp, cudaLaunchDevicV2_perKernel>"
 			"7200,8000,100,12000,1600");
 }
 
-static address_type get_converge_point(address_type pc);
-
 void gpgpu_t::gpgpu_ptx_sim_bindNameToTexture(const char* name, const struct textureReference* texref, int dim, int readmode, int ext)
 {
    std::string texname(name);
@@ -229,10 +215,6 @@ void gpgpu_t::gpgpu_ptx_sim_unbindTexture(const struct textureReference* texref)
    m_NameToTextureInfo.erase(texname);
 }
 
-unsigned g_assemble_code_next_pc=0; 
-std::map<unsigned,function_info*> g_pc_to_finfo;
-std::vector<ptx_instruction*> function_info::s_g_pc_to_insn;
-
 #define MAX_INST_SIZE 8 /*bytes*/
 
 void function_info::ptx_assemble()
@@ -250,39 +232,39 @@ void function_info::ptx_assemble()
    fflush(stdout);
    std::list<ptx_instruction*>::iterator i;
 
-   addr_t PC = g_assemble_code_next_pc; // globally unique address (across functions)
+   addr_t PC = gpgpu_ctx->func_sim->g_assemble_code_next_pc; // globally unique address (across functions)
    // start function on an aligned address
    for( unsigned i=0; i < (PC%MAX_INST_SIZE); i++ ) 
-      s_g_pc_to_insn.push_back((ptx_instruction*)NULL);
+      gpgpu_ctx->s_g_pc_to_insn.push_back((ptx_instruction*)NULL);
    PC += PC%MAX_INST_SIZE; 
    m_start_PC = PC;
 
    addr_t n=0; // offset in m_instr_mem
    //Why s_g_pc_to_insn.size() is needed to reserve additional memory for insts? reserve is cumulative.
    //s_g_pc_to_insn.reserve(s_g_pc_to_insn.size() + MAX_INST_SIZE*m_instructions.size());
-   s_g_pc_to_insn.reserve(MAX_INST_SIZE*m_instructions.size());
+   gpgpu_ctx->s_g_pc_to_insn.reserve(MAX_INST_SIZE*m_instructions.size());
    for ( i=m_instructions.begin(); i != m_instructions.end(); i++ ) {
       ptx_instruction *pI = *i;
       if ( pI->is_label() ) {
          const symbol *l = pI->get_label();
          labels[l->name()] = n;
       } else {
-         g_pc_to_finfo[PC] = this;
+         gpgpu_ctx->func_sim->g_pc_to_finfo[PC] = this;
          m_instr_mem[n] = pI;
-         s_g_pc_to_insn.push_back(pI);
-         assert(pI == s_g_pc_to_insn[PC]);
+         gpgpu_ctx->s_g_pc_to_insn.push_back(pI);
+         assert(pI == gpgpu_ctx->s_g_pc_to_insn[PC]);
          pI->set_m_instr_mem_index(n);
          pI->set_PC(PC);
          assert( pI->inst_size() <= MAX_INST_SIZE );
          for( unsigned i=1; i < pI->inst_size(); i++ ) {
-            s_g_pc_to_insn.push_back((ptx_instruction*)NULL);
+            gpgpu_ctx->s_g_pc_to_insn.push_back((ptx_instruction*)NULL);
             m_instr_mem[n+i]=NULL;
          }
          n  += pI->inst_size();
          PC += pI->inst_size();
       }
    }
-   g_assemble_code_next_pc=PC;
+   gpgpu_ctx->func_sim->g_assemble_code_next_pc=PC;
    for ( unsigned ii=0; ii < n; ii += m_instr_mem[ii]->inst_size() ) { // handle branch instructions
       ptx_instruction *pI = m_instr_mem[ii];
       if ( pI->get_opcode() == BRA_OP || pI->get_opcode() == BREAKADDR_OP  || pI->get_opcode() == CALLP_OP) {
@@ -446,8 +428,8 @@ void gpgpu_t::memcpy_to_gpu( size_t dst_start_addr, const void *src, size_t coun
       m_global_mem->write(dst_start_addr+n,1, src_data+n,NULL,NULL);
 
    // Copy into the performance model.
-   extern gpgpu_sim* g_the_gpu; 
-   g_the_gpu->perf_memcpy_to_gpu(dst_start_addr, count);
+   //extern gpgpu_sim* g_the_gpu;
+   g_the_gpu()->perf_memcpy_to_gpu(dst_start_addr, count);
    if(g_debug_execution >= 3) {
       printf( " done.\n");
       fflush(stdout);
@@ -465,8 +447,8 @@ void gpgpu_t::memcpy_from_gpu( void *dst, size_t src_start_addr, size_t count )
       m_global_mem->read(src_start_addr+n,1,dst_data+n);
 
    // Copy into the performance model.
-   extern gpgpu_sim* g_the_gpu; 
-   g_the_gpu->perf_memcpy_to_gpu(src_start_addr, count);
+   //extern gpgpu_sim* g_the_gpu;
+   g_the_gpu()->perf_memcpy_to_gpu(src_start_addr, count);
    if(g_debug_execution >= 3) {
       printf( " done.\n");
       fflush(stdout);
@@ -507,7 +489,7 @@ void gpgpu_t::gpu_memset( size_t dst_start_addr, int c, size_t count )
    }
 }
 
-void ptx_print_insn( address_type pc, FILE *fp )
+void cuda_sim::ptx_print_insn( address_type pc, FILE *fp )
 {
    std::map<unsigned,function_info*>::iterator f = g_pc_to_finfo.find(pc);
    if( f == g_pc_to_finfo.end() ) {
@@ -519,7 +501,7 @@ void ptx_print_insn( address_type pc, FILE *fp )
    finfo->print_insn(pc,fp);
 }
 
-std::string ptx_get_insn_str( address_type pc )
+std::string cuda_sim::ptx_get_insn_str( address_type pc )
 {
    std::map<unsigned,function_info*>::iterator f = g_pc_to_finfo.find(pc);
    if( f == g_pc_to_finfo.end() ) {
@@ -665,35 +647,38 @@ void ptx_instruction::set_opcode_and_latency()
 	 * [3] MAD
 	 * [4] DIV
 	 */
-	sscanf(opcode_latency_int, "%u,%u,%u,%u,%u",
+	sscanf(gpgpu_ctx->func_sim->opcode_latency_int, "%u,%u,%u,%u,%u",
 			&int_latency[0],&int_latency[1],&int_latency[2],
 			&int_latency[3],&int_latency[4]);
-	sscanf(opcode_latency_fp, "%u,%u,%u,%u,%u",
+	sscanf(gpgpu_ctx->func_sim->opcode_latency_fp, "%u,%u,%u,%u,%u",
 			&fp_latency[0],&fp_latency[1],&fp_latency[2],
 			&fp_latency[3],&fp_latency[4]);
-	sscanf(opcode_latency_dp, "%u,%u,%u,%u,%u",
+	sscanf(gpgpu_ctx->func_sim->opcode_latency_dp, "%u,%u,%u,%u,%u",
 			&dp_latency[0],&dp_latency[1],&dp_latency[2],
 			&dp_latency[3],&dp_latency[4]);
-	sscanf(opcode_latency_sfu, "%u",
+	sscanf(gpgpu_ctx->func_sim->opcode_latency_sfu, "%u",
 			&sfu_latency);
-	sscanf(opcode_latency_tensor, "%u",
+	sscanf(gpgpu_ctx->func_sim->opcode_latency_tensor, "%u",
 			&tensor_latency);
-	sscanf(opcode_initiation_int, "%u,%u,%u,%u,%u",
+	sscanf(gpgpu_ctx->func_sim->opcode_initiation_int, "%u,%u,%u,%u,%u",
 			&int_init[0],&int_init[1],&int_init[2],
 			&int_init[3],&int_init[4]);
-	sscanf(opcode_initiation_fp, "%u,%u,%u,%u,%u",
+	sscanf(gpgpu_ctx->func_sim->opcode_initiation_fp, "%u,%u,%u,%u,%u",
 			&fp_init[0],&fp_init[1],&fp_init[2],
 			&fp_init[3],&fp_init[4]);
-	sscanf(opcode_initiation_dp, "%u,%u,%u,%u,%u",
+	sscanf(gpgpu_ctx->func_sim->opcode_initiation_dp, "%u,%u,%u,%u,%u",
 			&dp_init[0],&dp_init[1],&dp_init[2],
 			&dp_init[3],&dp_init[4]);
-	sscanf(opcode_initiation_sfu, "%u",
+	sscanf(gpgpu_ctx->func_sim->opcode_initiation_sfu, "%u",
 			&sfu_init);
-	sscanf(opcode_initiation_tensor, "%u",
+	sscanf(gpgpu_ctx->func_sim->opcode_initiation_tensor, "%u",
 			&tensor_init);
-	sscanf(cdp_latency_str, "%u,%u,%u,%u,%u",
-			&cdp_latency[0],&cdp_latency[1],&cdp_latency[2],
-            &cdp_latency[3],&cdp_latency[4]);
+	sscanf(gpgpu_ctx->func_sim->cdp_latency_str, "%u,%u,%u,%u,%u",
+			&gpgpu_ctx->func_sim->cdp_latency[0],
+			&gpgpu_ctx->func_sim->cdp_latency[1],
+			&gpgpu_ctx->func_sim->cdp_latency[2],
+			&gpgpu_ctx->func_sim->cdp_latency[3],
+			&gpgpu_ctx->func_sim->cdp_latency[4]);
 
 	if(!m_operands.empty()){
 		std::vector<operand_info>::iterator it;
@@ -1102,7 +1087,7 @@ void ptx_instruction::pre_decode()
    }
 
    // get reconvergence pc
-   reconvergence_pc = get_converge_point(pc);
+   reconvergence_pc = gpgpu_ctx->func_sim->get_converge_point(pc);
 
    m_decoded=true;
 }
@@ -1268,8 +1253,8 @@ void function_info::finalize( memory_space *param_mem )
 void function_info::param_to_shared( memory_space *shared_mem, symbol_table *symtab ) 
 {
    // TODO: call this only for PTXPlus with GT200 models 
-   extern gpgpu_sim* g_the_gpu; 
-   if (not g_the_gpu->get_config().convert_to_ptxplus()) return; 
+   //extern gpgpu_sim* g_the_gpu;
+   if (not g_the_gpu()->get_config().convert_to_ptxplus()) return;
 
    // copies parameters into simulated shared memory
    for( std::map<unsigned,param_info>::iterator i=m_ptx_kernel_param_info.begin(); i!=m_ptx_kernel_param_info.end(); i++ ) {
@@ -1466,7 +1451,7 @@ void function_info::ptx_jit_config(std::map<unsigned long long, size_t> mallocPt
 }
 
 template<int activate_level> 
-bool ptx_debug_exec_dump_cond(int thd_uid, addr_t pc)
+bool cuda_sim::ptx_debug_exec_dump_cond(int thd_uid, addr_t pc)
 {
    if (g_debug_execution >= activate_level) {
       // check each type of debug dump constraint to filter out dumps
@@ -1483,7 +1468,7 @@ bool ptx_debug_exec_dump_cond(int thd_uid, addr_t pc)
    return false;
 }
 
-void init_inst_classification_stat() 
+void cuda_sim::init_inst_classification_stat()
 {
    static std::set<unsigned> init;
    if( init.find(g_ptx_kernel_count) != init.end() ) 
@@ -1552,7 +1537,8 @@ void ptx_thread_info::ptx_exec_inst( warp_inst_t &inst, unsigned lane_id)
    }
    
    if ( g_debug_execution >= 6 || m_gpu->get_config().get_ptx_inst_debug_to_file()) {
-      if ( (g_debug_thread_uid==0) || (get_uid() == (unsigned)g_debug_thread_uid) ) {
+      if ( (m_gpu->gpgpu_ctx->func_sim->g_debug_thread_uid==0)
+	      || (get_uid() == (unsigned)(m_gpu->gpgpu_ctx->func_sim->g_debug_thread_uid)) ) {
         
           clear_modifiedregs();
          enable_debug_trace();
@@ -1624,11 +1610,11 @@ void ptx_thread_info::ptx_exec_inst( warp_inst_t &inst, unsigned lane_id)
       fflush(m_gpu->get_ptx_inst_debug_file());
    }
 
-   if ( ptx_debug_exec_dump_cond<5>(get_uid(), pc) ) {
+   if ( m_gpu->gpgpu_ctx->func_sim->ptx_debug_exec_dump_cond<5>(get_uid(), pc) ) {
       dim3 ctaid = get_ctaid();
       dim3 tid = get_tid();
       printf("%u [thd=%u][i=%u] : ctaid=(%u,%u,%u) tid=(%u,%u,%u) icount=%u [pc=%u] (%s:%u - %s)  [0x%llx]\n", 
-             g_ptx_sim_num_insn, 
+             m_gpu->gpgpu_ctx->func_sim->g_ptx_sim_num_insn,
              get_uid(),
              pI->uid(), ctaid.x,ctaid.y,ctaid.z,tid.x,tid.y,tid.z,
              get_icount(),
@@ -1678,22 +1664,22 @@ void ptx_thread_info::ptx_exec_inst( warp_inst_t &inst, unsigned lane_id)
    }
 
    if ( g_debug_execution >= 6 ) {
-      if ( ptx_debug_exec_dump_cond<6>(get_uid(), pc) )
+      if ( m_gpu->gpgpu_ctx->func_sim->ptx_debug_exec_dump_cond<6>(get_uid(), pc) )
          dump_modifiedregs(stdout);
    }
    if ( g_debug_execution >= 10 ) {
-      if ( ptx_debug_exec_dump_cond<10>(get_uid(), pc) )
+      if ( m_gpu->gpgpu_ctx->func_sim->ptx_debug_exec_dump_cond<10>(get_uid(), pc) )
          dump_regs(stdout);
    }
    update_pc();
-   g_ptx_sim_num_insn++;
+   m_gpu->gpgpu_ctx->func_sim->g_ptx_sim_num_insn++;
    
    //not using it with functional simulation mode
    if(!(this->m_functionalSimulationMode))
        ptx_file_line_stats_add_exec_count(pI);
    
-   if ( gpgpu_ptx_instruction_classification ) {
-      init_inst_classification_stat();
+   if ( m_gpu->gpgpu_ctx->func_sim->gpgpu_ptx_instruction_classification ) {
+      m_gpu->gpgpu_ctx->func_sim->init_inst_classification_stat();
       unsigned space_type=0;
       switch ( pI->get_space().get_type() ) {
       case global_space: space_type = 10; break;
@@ -1709,15 +1695,15 @@ void ptx_thread_info::ptx_exec_inst( warp_inst_t &inst, unsigned lane_id)
          space_type = 0 ;
          break;
       }
-      StatAddSample( g_inst_classification_stat[g_ptx_kernel_count],  op_classification);
-      if (space_type) StatAddSample( g_inst_classification_stat[g_ptx_kernel_count], ( int )space_type);
-      StatAddSample( g_inst_op_classification_stat[g_ptx_kernel_count], (int)  pI->get_opcode() );
+      StatAddSample( m_gpu->gpgpu_ctx->func_sim->g_inst_classification_stat[m_gpu->gpgpu_ctx->func_sim->g_ptx_kernel_count],  op_classification);
+      if (space_type) StatAddSample( m_gpu->gpgpu_ctx->func_sim->g_inst_classification_stat[m_gpu->gpgpu_ctx->func_sim->g_ptx_kernel_count], ( int )space_type);
+      StatAddSample( m_gpu->gpgpu_ctx->func_sim->g_inst_op_classification_stat[m_gpu->gpgpu_ctx->func_sim->g_ptx_kernel_count], (int)  pI->get_opcode() );
    }
-   if ( (g_ptx_sim_num_insn % 100000) == 0 ) {
+   if ( (m_gpu->gpgpu_ctx->func_sim->g_ptx_sim_num_insn % 100000) == 0 ) {
       dim3 ctaid = get_ctaid();
       dim3 tid = get_tid();
       DPRINTF(LIVENESS, "GPGPU-Sim PTX: %u instructions simulated : ctaid=(%u,%u,%u) tid=(%u,%u,%u)\n",
-             g_ptx_sim_num_insn, ctaid.x,ctaid.y,ctaid.z,tid.x,tid.y,tid.z );
+             m_gpu->gpgpu_ctx->func_sim->g_ptx_sim_num_insn, ctaid.x,ctaid.y,ctaid.z,tid.x,tid.y,tid.z );
       fflush(stdout);
    }
    
@@ -1740,7 +1726,7 @@ void ptx_thread_info::ptx_exec_inst( warp_inst_t &inst, unsigned lane_id)
       
 }
 
-void set_param_gpgpu_num_shaders(int num_shaders)
+void cuda_sim::set_param_gpgpu_num_shaders(int num_shaders)
 {
    gpgpu_param_num_shaders = num_shaders;
 }
@@ -1750,9 +1736,9 @@ const struct gpgpu_ptx_sim_info* ptx_sim_kernel_info(const function_info *kernel
    return kernel->get_kernel_info();
 }
 
-const warp_inst_t *ptx_fetch_inst( address_type pc )
+const warp_inst_t *gpgpu_context::ptx_fetch_inst( address_type pc )
 {
-    return function_info::pc_to_instruction(pc);
+    return pc_to_instruction(pc);
 }
 
 unsigned ptx_sim_init_thread( kernel_info_t &kernel,
@@ -1822,7 +1808,7 @@ unsigned ptx_sim_init_thread( kernel_info_t &kernel,
    assert( max_cta_per_sm > 0 );
 
    //unsigned sm_idx = (tid/cta_size)*gpgpu_param_num_shaders + sid;
-   unsigned sm_idx = hw_cta_id*gpgpu_param_num_shaders + sid;
+   unsigned sm_idx = hw_cta_id*gpu->gpgpu_ctx->func_sim->gpgpu_param_num_shaders + sid;
 
    if ( shared_memory_lookup.find(sm_idx) == shared_memory_lookup.end() ) {
       if ( g_debug_execution >= 1 ) {
@@ -1836,7 +1822,7 @@ unsigned ptx_sim_init_thread( kernel_info_t &kernel,
       snprintf(buf,512,"sstarr_%u", sid);
       sstarr_mem = new memory_space_impl<16*1024>(buf,4);
       sstarr_memory_lookup[sm_idx] = sstarr_mem;
-      cta_info = new ptx_cta_info(sm_idx);
+      cta_info = new ptx_cta_info(sm_idx, gpu->gpgpu_ctx);
       ptx_cta_lookup[sm_idx] = cta_info;
    } else {
       if ( g_debug_execution >= 1 ) {
@@ -1920,7 +1906,7 @@ size_t get_kernel_code_size( class function_info *entry )
 }
 
 
-kernel_info_t *gpgpu_opencl_ptx_sim_init_grid(class function_info *entry,
+kernel_info_t *cuda_sim::gpgpu_opencl_ptx_sim_init_grid(class function_info *entry,
                                              gpgpu_ptx_sim_arg_list_t args, 
                                              struct dim3 gridDim,
                                              struct dim3 blockDim,
@@ -1952,38 +1938,33 @@ void print_splash()
    }
 }
 
-std::map<const void*,std::string>   g_const_name_lookup; // indexed by hostVar
-std::map<const void*,std::string>   g_global_name_lookup; // indexed by hostVar
-std::set<std::string>   g_globals;
-std::set<std::string>   g_constants;
-
-void gpgpu_ptx_sim_register_const_variable(void *hostVar, const char *deviceName, size_t size )
+void cuda_sim::gpgpu_ptx_sim_register_const_variable(void *hostVar, const char *deviceName, size_t size )
 {
    printf("GPGPU-Sim PTX registering constant %s (%zu bytes) to name mapping\n", deviceName, size );
    g_const_name_lookup[hostVar] = deviceName;
 }
 
-void gpgpu_ptx_sim_register_global_variable(void *hostVar, const char *deviceName, size_t size )
+void cuda_sim::gpgpu_ptx_sim_register_global_variable(void *hostVar, const char *deviceName, size_t size )
 {
    printf("GPGPU-Sim PTX registering global %s hostVar to name mapping\n", deviceName );
    g_global_name_lookup[hostVar] = deviceName;
 }
 
-void gpgpu_ptx_sim_memcpy_symbol(const char *hostVar, const void *src, size_t count, size_t offset, int to, gpgpu_t *gpu )
+void cuda_sim::gpgpu_ptx_sim_memcpy_symbol(const char *hostVar, const void *src, size_t count, size_t offset, int to, gpgpu_t *gpu )
 {
    printf("GPGPU-Sim PTX: starting gpgpu_ptx_sim_memcpy_symbol with hostVar 0x%p\n", hostVar);
    bool found_sym = false;
    memory_space_t mem_region = undefined_space;
    std::string sym_name;
 
-   std::map<const void*,std::string>::iterator c=g_const_name_lookup.find(hostVar);
-   if ( c!=g_const_name_lookup.end() ) {
+   std::map<const void*,std::string>::iterator c=gpu->gpgpu_ctx->func_sim->g_const_name_lookup.find(hostVar);
+   if ( c!=gpu->gpgpu_ctx->func_sim->g_const_name_lookup.end() ) {
       found_sym = true;
       sym_name = c->second;
       mem_region = const_space;
    }
-   std::map<const void*,std::string>::iterator g=g_global_name_lookup.find(hostVar);
-   if ( g!=g_global_name_lookup.end() ) {
+   std::map<const void*,std::string>::iterator g=gpu->gpgpu_ctx->func_sim->g_global_name_lookup.find(hostVar);
+   if ( g!=gpu->gpgpu_ctx->func_sim->g_global_name_lookup.end() ) {
       if ( found_sym ) {
          printf("Execution error: PTX symbol \"%s\" w/ hostVar=0x%Lx is declared both const and global?\n", 
                 sym_name.c_str(), (unsigned long long)hostVar );
@@ -2011,8 +1992,8 @@ void gpgpu_ptx_sim_memcpy_symbol(const char *hostVar, const void *src, size_t co
    const char *mem_name = NULL;
    memory_space *mem = NULL;
 
-   std::map<std::string,symbol_table*>::iterator st = g_sym_name_to_symbol_table.find(sym_name.c_str());
-   assert( st != g_sym_name_to_symbol_table.end() );
+   std::map<std::string,symbol_table*>::iterator st = gpgpu_ctx->ptx_parser->g_sym_name_to_symbol_table.find(sym_name.c_str());
+   assert( st != gpgpu_ctx->ptx_parser->g_sym_name_to_symbol_table.end() );
    symbol_table *symtab = st->second;
 
    symbol *sym = symtab->lookup(sym_name.c_str());
@@ -2039,13 +2020,9 @@ void gpgpu_ptx_sim_memcpy_symbol(const char *hostVar, const void *src, size_t co
    fflush(stdout);
 }
 
-int g_ptx_sim_mode; // if non-zero run functional simulation only (i.e., no notion of a clock cycle)
-
 extern int ptx_debug;
 
-bool g_cuda_launch_blocking = false;
-
-void read_sim_environment_variables() 
+void cuda_sim::read_sim_environment_variables()
 {
    ptx_debug = 0;
    g_debug_execution = 0;
@@ -2103,8 +2080,6 @@ void read_sim_environment_variables()
    }
 }
 
-ptx_cta_info *g_func_cta_info = NULL;
-
 #define MAX(a,b) (((a)>(b))?(a):(b))
 
 unsigned max_cta (const struct gpgpu_ptx_sim_info *kernel_info, unsigned threads_per_cta, unsigned int warp_size, unsigned int n_thread_per_shader, unsigned int gpgpu_shmem_size, unsigned int gpgpu_shader_registers, unsigned int max_cta_per_core)
@@ -2143,12 +2118,12 @@ unsigned max_cta (const struct gpgpu_ptx_sim_info *kernel_info, unsigned threads
 This function simulates the CUDA code functionally, it takes a kernel_info_t parameter 
 which holds the data for the CUDA kernel to be executed
 !*/
-void gpgpu_cuda_ptx_sim_main_func( kernel_info_t &kernel, bool openCL )
+void cuda_sim::gpgpu_cuda_ptx_sim_main_func( kernel_info_t &kernel, bool openCL )
 {
      printf("GPGPU-Sim: Performing Functional Simulation, executing kernel %s...\n",kernel.name().c_str());
 
      //using a shader core object for book keeping, it is not needed but as most function built for performance simulation need it we use it here
-    extern gpgpu_sim *g_the_gpu;
+    //extern gpgpu_sim *g_the_gpu;
     //before we execute, we should do PDOM analysis for functional simulation scenario.
     function_info *kernel_func_info = kernel.entry();
     const struct gpgpu_ptx_sim_info *kernel_info = ptx_sim_kernel_info(kernel_func_info);
@@ -2163,7 +2138,7 @@ void gpgpu_cuda_ptx_sim_main_func( kernel_info_t &kernel, bool openCL )
 	 kernel_func_info->set_pdom();
     }
 
-    unsigned max_cta_tot = max_cta(kernel_info,kernel.threads_per_cta(), g_the_gpu->getShaderCoreConfig()->warp_size, g_the_gpu->getShaderCoreConfig()->n_thread_per_shader, g_the_gpu->getShaderCoreConfig()->gpgpu_shmem_size, g_the_gpu->getShaderCoreConfig()->gpgpu_shader_registers, g_the_gpu->getShaderCoreConfig()->max_cta_per_core);
+    unsigned max_cta_tot = max_cta(kernel_info,kernel.threads_per_cta(), g_the_gpu()->getShaderCoreConfig()->warp_size, g_the_gpu()->getShaderCoreConfig()->n_thread_per_shader, g_the_gpu()->getShaderCoreConfig()->gpgpu_shmem_size, g_the_gpu()->getShaderCoreConfig()->gpgpu_shader_registers, g_the_gpu()->getShaderCoreConfig()->max_cta_per_core);
     printf("Max CTA : %d\n",max_cta_tot);
 
     
@@ -2171,11 +2146,11 @@ void gpgpu_cuda_ptx_sim_main_func( kernel_info_t &kernel, bool openCL )
 
       
     int inst_count=50;
-    int cp_op= g_the_gpu->checkpoint_option;
-    int cp_CTA = g_the_gpu->checkpoint_CTA;
-    int cp_kernel= g_the_gpu->checkpoint_kernel;
-    cp_count= g_the_gpu->checkpoint_insn_Y;
-    cp_cta_resume= g_the_gpu->checkpoint_CTA_t;
+    int cp_op= g_the_gpu()->checkpoint_option;
+    int cp_CTA = g_the_gpu()->checkpoint_CTA;
+    int cp_kernel= g_the_gpu()->checkpoint_kernel;
+    cp_count= g_the_gpu()->checkpoint_insn_Y;
+    cp_cta_resume= g_the_gpu()->checkpoint_CTA_t;
     int cta_launched =0;
 
     //we excute the kernel one CTA (Block) at the time, as synchronization functions work block wise
@@ -2187,13 +2162,13 @@ void gpgpu_cuda_ptx_sim_main_func( kernel_info_t &kernel, bool openCL )
         {
            functionalCoreSim cta(
                &kernel,
-               g_the_gpu,
-               g_the_gpu->getShaderCoreConfig()->warp_size
+               g_the_gpu(),
+               g_the_gpu()->getShaderCoreConfig()->warp_size
            );
            cta.execute(cp_count,temp);
 
             #if (CUDART_VERSION >= 5000)
-            	launch_all_device_kernels();
+               gpgpu_ctx->device_runtime->launch_all_device_kernels();
             #endif
          }
          else
@@ -2209,7 +2184,7 @@ void gpgpu_cuda_ptx_sim_main_func( kernel_info_t &kernel, bool openCL )
 	{
       char f1name[2048];
       snprintf(f1name,2048,"checkpoint_files/global_mem_%d.txt", kernel.get_uid() );
-      g_checkpoint->store_global_mem(g_the_gpu->get_global_memory(), f1name , "%08x");
+      g_checkpoint->store_global_mem(g_the_gpu()->get_global_memory(), f1name , "%08x");
 	}
 
 
@@ -2219,8 +2194,8 @@ void gpgpu_cuda_ptx_sim_main_func( kernel_info_t &kernel, bool openCL )
    
    //openCL kernel simulation calls don't register the kernel so we don't register its exit
    if(!openCL) {
-      extern stream_manager *g_stream_manager;
-      g_stream_manager->register_finished_kernel(kernel.get_uid());
+      //extern stream_manager *g_stream_manager;
+      g_stream_manager()->register_finished_kernel(kernel.get_uid());
    }
 
    //******PRINTING*******
@@ -2235,7 +2210,7 @@ void gpgpu_cuda_ptx_sim_main_func( kernel_info_t &kernel, bool openCL )
    //g_simulation_starttime is initilized by gpgpu_ptx_sim_init_perf() in gpgpusim_entrypoint.cc upon starting gpgpu-sim
    time_t end_time, elapsed_time, days, hrs, minutes, sec;
    end_time = time((time_t *)NULL);
-   elapsed_time = MAX(end_time - g_simulation_starttime, 1);
+   elapsed_time = MAX(end_time - GPGPUsim_ctx_ptr()->g_simulation_starttime, 1);
 	
 
    //calculating and printing simulation time in terms of days, hours, minutes and seconds
@@ -2269,7 +2244,7 @@ void functionalCoreSim::initializeCTA(unsigned ctaid_cp)
         assert(m_thread[i]!=NULL && !m_thread[i]->is_done());
         char fname[2048];
         snprintf(fname,2048,"checkpoint_files/thread_%d_0_reg.txt",i );
-        if(cp_cta_resume==1)
+        if(m_gpu->gpgpu_ctx->func_sim->cp_cta_resume==1)
             m_thread[i]->resume_reg_thread(fname,symtab);
         ctaLiveThreads++;
     }
@@ -2293,7 +2268,7 @@ void  functionalCoreSim::createWarp(unsigned warpId)
    char fname[2048];
    snprintf(fname,2048,"checkpoint_files/warp_%d_0_simt.txt",warpId );
 
-   if(cp_cta_resume==1)
+   if(m_gpu->gpgpu_ctx->func_sim->cp_cta_resume==1)
    {
       unsigned pc,rpc;
       m_simt_stack[warpId]->resume(fname);
@@ -2309,8 +2284,8 @@ void  functionalCoreSim::createWarp(unsigned warpId)
 
 void functionalCoreSim::execute(int inst_count, unsigned ctaid_cp)
  {
-   cp_count= m_gpu->checkpoint_insn_Y;
-    cp_cta_resume= m_gpu->checkpoint_CTA_t;
+     m_gpu->gpgpu_ctx->func_sim->cp_count= m_gpu->checkpoint_insn_Y;
+     m_gpu->gpgpu_ctx->func_sim->cp_cta_resume= m_gpu->checkpoint_CTA_t;
     initializeCTA(ctaid_cp);
     
     int count=0;
@@ -2389,11 +2364,11 @@ void functionalCoreSim::executeWarp(unsigned i, bool &allAtBarrier, bool & someO
     if(!m_warpAtBarrier[i]&& m_liveThreadCount[i]>0) allAtBarrier = false;
 }
 
-unsigned translate_pc_to_ptxlineno(unsigned pc)
+unsigned gpgpu_context::translate_pc_to_ptxlineno(unsigned pc)
 {
    // this function assumes that the kernel fits inside a single PTX file
    // function_info *pFunc = g_func_info; // assume that the current kernel is the one in query
-   const ptx_instruction *pInsn = function_info::pc_to_instruction(pc);
+   const ptx_instruction *pInsn = pc_to_instruction(pc);
    unsigned ptx_line_number = pInsn->source_line();
 
    return ptx_line_number;
@@ -2403,8 +2378,6 @@ unsigned translate_pc_to_ptxlineno(unsigned pc)
 
 extern std::map<unsigned,const char*> get_duplicate();
 
-int g_ptxinfo_error_detected;
-
 static char *g_ptxinfo_kname = NULL;
 static struct gpgpu_ptx_sim_info g_ptxinfo;
 static std::map<unsigned,const char*> g_duplicate;
@@ -2532,14 +2505,7 @@ void ptxinfo_opencl_addinfo( std::map<std::string,function_info*> &kernels )
    clear_ptxinfo();
 }
 
-struct rec_pts {
-   gpgpu_recon_t *s_kernel_recon_points;
-   int s_num_recon;
-};
-
-class std::map<function_info*,rec_pts> g_rpts;
-
-struct rec_pts find_reconvergence_points( function_info *finfo )
+struct rec_pts cuda_sim::find_reconvergence_points( function_info *finfo )
 {
    rec_pts tmp;
    std::map<function_info*,rec_pts>::iterator r=g_rpts.find(finfo);
@@ -2578,7 +2544,7 @@ address_type get_return_pc( void *thd )
     return the_thread->get_return_PC();
 }
 
-address_type get_converge_point( address_type pc ) 
+address_type cuda_sim::get_converge_point( address_type pc )
 {
    // the branch could encode the reconvergence point and/or a bit that indicates the 
    // reconvergence point is the return PC on the call stack in the case the branch has 
diff --git a/src/cuda-sim/cuda-sim.h b/src/cuda-sim/cuda-sim.h
index e690356..1be3d19 100644
--- a/src/cuda-sim/cuda-sim.h
+++ b/src/cuda-sim/cuda-sim.h
@@ -36,33 +36,16 @@
 #include <string>
 #include"ptx_sim.h"
 
+class gpgpu_context;
 class memory_space;
 class function_info;
 class symbol_table;
 
 extern const char *g_gpgpusim_version_string;
-extern int g_ptx_sim_mode;
 extern int g_debug_execution;
-extern int g_debug_thread_uid;
-extern void ** g_inst_classification_stat;
-extern void ** g_inst_op_classification_stat;
-extern int g_ptx_kernel_count; // used for classification stat collection purposes 
-extern char *opcode_latency_int, *opcode_latency_fp, *opcode_latency_dp,*opcode_latency_sfu,*opcode_latency_tensor;
 
-
-void ptx_opcocde_latency_options (option_parser_t opp);
-extern class kernel_info_t *gpgpu_opencl_ptx_sim_init_grid(class function_info *entry,
-                                            gpgpu_ptx_sim_arg_list_t args, 
-                                            struct dim3 gridDim, 
-                                            struct dim3 blockDim, 
-                                                          class gpgpu_t *gpu );
-extern void gpgpu_cuda_ptx_sim_main_func( kernel_info_t &kernel, bool openCL = false );
 extern void   print_splash();
-extern void   gpgpu_ptx_sim_register_const_variable(void*, const char *deviceName, size_t size );
-extern void   gpgpu_ptx_sim_register_global_variable(void *hostVar, const char *deviceName, size_t size );
-extern void   gpgpu_ptx_sim_memcpy_symbol(const char *hostVar, const void *src, size_t count, size_t offset, int to, gpgpu_t *gpu );
 
-extern void read_sim_environment_variables();
 extern void ptxinfo_opencl_addinfo( std::map<std::string,function_info*> &kernels );
 unsigned ptx_sim_init_thread( kernel_info_t &kernel,
                               class ptx_thread_info** thread_info,
@@ -75,12 +58,7 @@ unsigned ptx_sim_init_thread( kernel_info_t &kernel,
                               unsigned hw_warp_id,
                               gpgpu_t *gpu,
                               bool functionalSimulationMode = false);
-const warp_inst_t *ptx_fetch_inst( address_type pc );
 const struct gpgpu_ptx_sim_info* ptx_sim_kernel_info(const class function_info *kernel);
-void ptx_print_insn( address_type pc, FILE *fp );
-std::string ptx_get_insn_str( address_type pc );
-void set_param_gpgpu_num_shaders(int num_shaders);
-
 
 /*!
  * This class functionally executes a kernel. It uses the basic data structures and procedures in core_t 
@@ -134,4 +112,91 @@ void print_ptxinfo();
 void clear_ptxinfo();
 struct gpgpu_ptx_sim_info get_ptxinfo();
 
+class gpgpu_recon_t;
+struct rec_pts {
+   gpgpu_recon_t *s_kernel_recon_points;
+   int s_num_recon;
+};
+
+
+class cuda_sim {
+    public:
+	cuda_sim( gpgpu_context* ctx ) {
+	    g_ptx_sim_num_insn = 0;
+	    g_ptx_kernel_count = -1; // used for classification stat collection purposes
+	    gpgpu_param_num_shaders = 0;
+	    g_cuda_launch_blocking = false;
+	    g_inst_classification_stat = NULL;
+	    g_inst_op_classification_stat= NULL;
+	    g_assemble_code_next_pc=0;
+	    g_debug_thread_uid = 0;
+	    g_override_embedded_ptx = false;
+	    ptx_tex_regs = NULL;
+	    g_ptx_thread_info_delete_count=0;
+	    g_ptx_thread_info_uid_next=1;
+	    g_debug_pc = 0xBEEF1518;
+	    gpgpu_ctx = ctx;
+	}
+	//global variables
+	char *opcode_latency_int;
+	char *opcode_latency_fp;
+	char *opcode_latency_dp;
+	char *opcode_latency_sfu;
+	char *opcode_latency_tensor;
+	char *opcode_initiation_int;
+	char *opcode_initiation_fp;
+	char *opcode_initiation_dp;
+	char *opcode_initiation_sfu;
+	char *opcode_initiation_tensor;
+	int cp_count;
+	int cp_cta_resume;
+	int g_ptxinfo_error_detected;
+	unsigned g_ptx_sim_num_insn;
+	char *cdp_latency_str;
+	int g_ptx_kernel_count; // used for classification stat collection purposes
+	std::map<const void*,std::string>   g_global_name_lookup; // indexed by hostVar
+	std::map<const void*,std::string>   g_const_name_lookup; // indexed by hostVar
+	int g_ptx_sim_mode; // if non-zero run functional simulation only (i.e., no notion of a clock cycle)
+	unsigned gpgpu_param_num_shaders;
+	class std::map<function_info*,rec_pts> g_rpts;
+	bool g_cuda_launch_blocking;
+	void ** g_inst_classification_stat;
+	void ** g_inst_op_classification_stat;
+	std::set<std::string>   g_globals;
+	std::set<std::string>   g_constants;
+	std::map<unsigned,function_info*> g_pc_to_finfo;
+	int gpgpu_ptx_instruction_classification;
+	unsigned cdp_latency[5];
+	unsigned g_assemble_code_next_pc;
+	int g_debug_thread_uid;
+	bool g_override_embedded_ptx;
+	std::set<unsigned long long> g_ptx_cta_info_sm_idx_used;
+	ptx_reg_t* ptx_tex_regs;
+	unsigned g_ptx_thread_info_delete_count;
+	unsigned g_ptx_thread_info_uid_next;
+	addr_t g_debug_pc;
+	// backward pointer
+	class gpgpu_context* gpgpu_ctx;
+	//global functions
+	void ptx_opcocde_latency_options (option_parser_t opp);
+	void gpgpu_cuda_ptx_sim_main_func( kernel_info_t &kernel, bool openCL = false );
+	int gpgpu_opencl_ptx_sim_main_func( kernel_info_t *grid );
+	void init_inst_classification_stat();
+	kernel_info_t *gpgpu_opencl_ptx_sim_init_grid(class function_info *entry,
+		gpgpu_ptx_sim_arg_list_t args,
+		struct dim3 gridDim,
+		struct dim3 blockDim,
+		gpgpu_t *gpu );
+	void   gpgpu_ptx_sim_register_global_variable(void *hostVar, const char *deviceName, size_t size );
+	void   gpgpu_ptx_sim_register_const_variable(void*, const char *deviceName, size_t size );
+	void read_sim_environment_variables();
+	void set_param_gpgpu_num_shaders(int num_shaders);
+	struct rec_pts find_reconvergence_points( function_info *finfo );
+	address_type get_converge_point( address_type pc );
+	void   gpgpu_ptx_sim_memcpy_symbol(const char *hostVar, const void *src, size_t count, size_t offset, int to, gpgpu_t *gpu );
+	void ptx_print_insn( address_type pc, FILE *fp );
+	std::string ptx_get_insn_str( address_type pc );
+	template<int activate_level> bool ptx_debug_exec_dump_cond(int thd_uid, addr_t pc);
+};
+
 #endif
diff --git a/src/cuda-sim/cuda_device_runtime.cc b/src/cuda-sim/cuda_device_runtime.cc
index 917e7a8..dc3adc3 100644
--- a/src/cuda-sim/cuda_device_runtime.cc
+++ b/src/cuda-sim/cuda_device_runtime.cc
@@ -5,8 +5,6 @@
 #include <iostream>
 #include <map>
 
-unsigned long long g_total_param_size = 0;
-unsigned long long g_max_total_param_size = 0;
 
 
 #if (CUDART_VERSION >= 5000)
@@ -18,7 +16,9 @@ unsigned long long g_max_total_param_size = 0;
 #include "cuda-sim.h"
 #include "ptx_ir.h"
 #include "../stream_manager.h"
+#include "../gpgpusim_entrypoint.h"
 #include "cuda_device_runtime.h"
+#include "../../libcuda/gpgpu_context.h"
 
 #define DEV_RUNTIME_REPORT(a) \
    if( g_debug_execution ) { \
@@ -26,49 +26,12 @@ unsigned long long g_max_total_param_size = 0;
       std::cout.flush(); \
    }
 
-class device_launch_config_t {
 
-public:
-    device_launch_config_t() {}
-
-    device_launch_config_t(dim3 _grid_dim,
-        dim3 _block_dim,
-        unsigned int _shared_mem,
-        function_info * _entry):
-            grid_dim(_grid_dim),
-            block_dim(_block_dim),
-            shared_mem(_shared_mem),
-            entry(_entry) {}
-    
-    dim3 grid_dim;
-    dim3 block_dim;
-    unsigned int shared_mem;
-    function_info * entry;
-
-};
-
-class device_launch_operation_t {
-
-public:
-    device_launch_operation_t() {}
-    device_launch_operation_t(kernel_info_t *_grid,
-        CUstream_st * _stream) :
-            grid(_grid), stream(_stream) {}
-
-    kernel_info_t * grid; //a new child grid
-
-    CUstream_st * stream; 
-
-};
-
-
-std::map<void *, device_launch_config_t> g_cuda_device_launch_param_map;
-std::list<device_launch_operation_t> g_cuda_device_launch_op;
-extern stream_manager *g_stream_manager;
+//extern stream_manager *g_stream_manager();
 
 //Handling device runtime api:
 //void * cudaGetParameterBufferV2(void *func, dim3 gridDimension, dim3 blockDimension, unsigned int sharedMemSize)
-void gpgpusim_cuda_getParameterBufferV2(const ptx_instruction * pI, ptx_thread_info * thread, const function_info * target_func)
+void cuda_device_runtime::gpgpusim_cuda_getParameterBufferV2(const ptx_instruction * pI, ptx_thread_info * thread, const function_info * target_func)
 {
     DEV_RUNTIME_REPORT("Calling cudaGetParameterBufferV2");
       
@@ -141,7 +104,7 @@ void gpgpusim_cuda_getParameterBufferV2(const ptx_instruction * pI, ptx_thread_i
 
 //Handling device runtime api:
 //cudaError_t cudaLaunchDeviceV2(void *parameterBuffer, cudaStream_t stream)
-void gpgpusim_cuda_launchDeviceV2(const ptx_instruction * pI, ptx_thread_info * thread, const function_info * target_func) {
+void cuda_device_runtime::gpgpusim_cuda_launchDeviceV2(const ptx_instruction * pI, ptx_thread_info * thread, const function_info * target_func) {
     DEV_RUNTIME_REPORT("Calling cudaLaunchDeviceV2");
 
     unsigned n_return = target_func->has_return();
@@ -200,7 +163,7 @@ void gpgpusim_cuda_launchDeviceV2(const ptx_instruction * pI, ptx_thread_info *
             //create child kernel_info_t and index it with parameter_buffer address
 	    gpgpu_t* gpu=thread->get_gpu();
             device_grid = new kernel_info_t(config.grid_dim, config.block_dim, device_kernel_entry, gpu->getNameArrayMapping(), gpu->getNameInfoMapping());
-            device_grid->launch_cycle = gpu_sim_cycle + gpu_tot_sim_cycle;
+            device_grid->launch_cycle = gpu->gpu_sim_cycle + gpu->gpu_tot_sim_cycle;
             kernel_info_t & parent_grid = thread->get_kernel();
             DEV_RUNTIME_REPORT("child kernel launched by " << parent_grid.name() << ", cta (" <<
                 thread->get_ctaid().x << ", " << thread->get_ctaid().y << ", " << thread->get_ctaid().z <<
@@ -262,7 +225,7 @@ void gpgpusim_cuda_launchDeviceV2(const ptx_instruction * pI, ptx_thread_info *
 //Handling device runtime api:
 //cudaError_t cudaStreamCreateWithFlags ( cudaStream_t* pStream, unsigned int  flags)
 //flags can only be cudaStreamNonBlocking
-void gpgpusim_cuda_streamCreateWithFlags(const ptx_instruction * pI, ptx_thread_info * thread, const function_info * target_func) {
+void cuda_device_runtime::gpgpusim_cuda_streamCreateWithFlags(const ptx_instruction * pI, ptx_thread_info * thread, const function_info * target_func) {
     DEV_RUNTIME_REPORT("Calling cudaStreamCreateWithFlags");
 
     unsigned n_return = target_func->has_return();
@@ -317,17 +280,17 @@ void gpgpusim_cuda_streamCreateWithFlags(const ptx_instruction * pI, ptx_thread_
 }
 
 
-void launch_one_device_kernel() {
+void cuda_device_runtime::launch_one_device_kernel() {
     if(!g_cuda_device_launch_op.empty()) {
         device_launch_operation_t &op = g_cuda_device_launch_op.front();
 
-        stream_operation stream_op = stream_operation(op.grid, g_ptx_sim_mode, op.stream);
-        g_stream_manager->push(stream_op);
+        stream_operation stream_op = stream_operation(op.grid, gpgpu_ctx->func_sim->g_ptx_sim_mode, op.stream);
+        g_stream_manager()->push(stream_op);
         g_cuda_device_launch_op.pop_front();
     }
 }
 
-void launch_all_device_kernels() {
+void cuda_device_runtime::launch_all_device_kernels() {
     while(!g_cuda_device_launch_op.empty()) {
         launch_one_device_kernel();
     }
diff --git a/src/cuda-sim/cuda_device_runtime.h b/src/cuda-sim/cuda_device_runtime.h
index 6dbcd71..7f7a0ca 100644
--- a/src/cuda-sim/cuda_device_runtime.h
+++ b/src/cuda-sim/cuda_device_runtime.h
@@ -1,11 +1,68 @@
+#ifndef __cuda_device_runtime_h__
+#define __cuda_device_runtime_h__
 //Jin: cuda_device_runtime.h
 //Defines CUDA device runtime APIs for CDP support
+class device_launch_config_t {
+
+public:
+    device_launch_config_t() {}
+
+    device_launch_config_t(dim3 _grid_dim,
+        dim3 _block_dim,
+        unsigned int _shared_mem,
+        function_info * _entry):
+            grid_dim(_grid_dim),
+            block_dim(_block_dim),
+            shared_mem(_shared_mem),
+            entry(_entry) {}
+
+    dim3 grid_dim;
+    dim3 block_dim;
+    unsigned int shared_mem;
+    function_info * entry;
+
+};
+
+class device_launch_operation_t {
+
+public:
+    device_launch_operation_t() {}
+    device_launch_operation_t(kernel_info_t *_grid,
+        CUstream_st * _stream) :
+            grid(_grid), stream(_stream) {}
+
+    kernel_info_t * grid; //a new child grid
+
+    CUstream_st * stream;
+
+};
+
+class gpgpu_context;
+
+class cuda_device_runtime {
+    public:
+	cuda_device_runtime( gpgpu_context* ctx ) {
+	    g_total_param_size = 0;
+	    g_max_total_param_size = 0;
+	    gpgpu_ctx = ctx;
+	}
+	unsigned long long g_total_param_size;
+	std::map<void *, device_launch_config_t> g_cuda_device_launch_param_map;
+	std::list<device_launch_operation_t> g_cuda_device_launch_op;
+	unsigned g_kernel_launch_latency;
+	unsigned long long g_max_total_param_size;
+	bool g_cdp_enabled;
+
+	// backward pointer
+	class gpgpu_context* gpgpu_ctx;
 #if (CUDART_VERSION >= 5000)
 #pragma once
-
-void gpgpusim_cuda_getParameterBufferV2(const ptx_instruction * pI, ptx_thread_info * thread, const function_info * target_func);
-void gpgpusim_cuda_launchDeviceV2(const ptx_instruction * pI, ptx_thread_info * thread, const function_info * target_func);
-void gpgpusim_cuda_streamCreateWithFlags(const ptx_instruction * pI, ptx_thread_info * thread, const function_info * target_func);
-void launch_all_device_kernels();
-void launch_one_device_kernel();
+	void gpgpusim_cuda_launchDeviceV2(const ptx_instruction * pI, ptx_thread_info * thread, const function_info * target_func);
+	void gpgpusim_cuda_streamCreateWithFlags(const ptx_instruction * pI, ptx_thread_info * thread, const function_info * target_func);
+	void gpgpusim_cuda_getParameterBufferV2(const ptx_instruction * pI, ptx_thread_info * thread, const function_info * target_func);
+	void launch_all_device_kernels();
+	void launch_one_device_kernel();
 #endif
+};
+
+#endif /* __cuda_device_runtime_h__  */
diff --git a/src/cuda-sim/instructions.cc b/src/cuda-sim/instructions.cc
index 11001d7..58a077e 100644
--- a/src/cuda-sim/instructions.cc
+++ b/src/cuda-sim/instructions.cc
@@ -31,6 +31,8 @@
 #include "ptx_ir.h"
 #include "opcodes.h"
 #include "ptx_sim.h"
+typedef void * yyscan_t;
+class ptx_recognizer;
 #include "ptx.tab.h"
 #include <stdlib.h>
 #include <math.h>
@@ -54,10 +56,10 @@
 #include "cuda_device_runtime.h"
 
 #include <stdarg.h>
+#include "../../libcuda/gpgpu_context.h"
+
 using half_float::half;
 
-unsigned ptx_instruction::g_num_ptx_inst_uid=0;
-bool debug_tensorcore = 0;
 
 
 const char *g_opcode_string[NUM_OPCODES] = {
@@ -1526,6 +1528,7 @@ void bar_impl( const ptx_instruction *pIin, ptx_thread_info *thread )
    			   op2_data = thread->get_operand_value(op2, op2, PRED_TYPE, thread, 1);
                op2_data.u32=!(op2_data.pred & 0x0001);
    			   pI->set_bar_id(op1_data.u32);
+			   pI->set_bar_count(thread->get_ntid().x * thread->get_ntid().y * thread->get_ntid().z);
    			   switch(red_op){
    			   	   case ATOMIC_POPC:
    			   		   thread->popc_reduction(ctaid,op1_data.u32,op2_data.u32);
@@ -1836,14 +1839,14 @@ void mma_impl( const ptx_instruction *pI, core_t *core, warp_inst_t inst )
 	
 	for (thrd=0; thrd < core->get_warp_size(); thrd++){
 		thread = core->get_thread_info()[tid+thrd];
-		if(debug_tensorcore)
+		if(core->get_gpu()->gpgpu_ctx->debug_tensorcore)
 			printf("THREAD=%d\n:",thrd);
 		for(int operand_num=1;operand_num<=3;operand_num++){
 			const operand_info &src_a=  pI->operand_lookup(operand_num);
          		unsigned nelem = src_a.get_vect_nelem();
          		ptx_reg_t v[8];
          		thread->get_vector_operand_values( src_a, v, nelem );
-			if(debug_tensorcore){
+			if(core->get_gpu()->gpgpu_ctx->debug_tensorcore){
 				printf("Thread%d_Iteration=%d\n:",thrd,operand_num);
 				for(k=0;k<nelem;k++){
 					printf("%x ",v[k].u64);
@@ -1865,14 +1868,14 @@ void mma_impl( const ptx_instruction *pI, core_t *core, warp_inst_t inst )
 			if(!((operand_num==3)&&(type2==F32_TYPE))){
 				for(k=0;k<2*nelem;k++){
 					temp=nw_v[k].f16;
-					if(debug_tensorcore)
+					if(core->get_gpu()->gpgpu_ctx->debug_tensorcore)
 						printf("%.2f ",temp);
 				}
-				if(debug_tensorcore)
+				if(core->get_gpu()->gpgpu_ctx->debug_tensorcore)
 					printf("\n");
 			}
 			else{
-				if(debug_tensorcore){
+				if(core->get_gpu()->gpgpu_ctx->debug_tensorcore){
 					for(k=0;k<8;k++){
 						printf("%.2f ",v[k].f32);
 					}
@@ -1883,7 +1886,7 @@ void mma_impl( const ptx_instruction *pI, core_t *core, warp_inst_t inst )
 			      case 1 ://operand 1
 				for(k=0;k<8;k++){
 					mapping(thrd,LOAD_A,a_layout,F16_TYPE,k,16,row,col,offset);
-					if(debug_tensorcore)
+					if(core->get_gpu()->gpgpu_ctx->debug_tensorcore)
 						printf("A:thread=%d,row=%d,col=%d,offset=%d\n",thrd,row,col,offset);
 				 	matrix_a[row][col]=nw_v[offset];
 			        }
@@ -1891,7 +1894,7 @@ void mma_impl( const ptx_instruction *pI, core_t *core, warp_inst_t inst )
 			      case 2 ://operand 2
 				for(k=0;k<8;k++){
 					mapping(thrd,LOAD_B,b_layout,F16_TYPE,k,16,row,col,offset);
-					if(debug_tensorcore)
+					if(core->get_gpu()->gpgpu_ctx->debug_tensorcore)
 						printf("B:thread=%d,row=%d,col=%d,offset=%d\n",thrd,row,col,offset);
 				 	matrix_b[row][col]=nw_v[offset];
 				}	
@@ -1899,7 +1902,7 @@ void mma_impl( const ptx_instruction *pI, core_t *core, warp_inst_t inst )
 			      case 3 ://operand 3
 				for(k=0;k<8;k++){
 					mapping(thrd,LOAD_C,ROW,type2,k,16,row,col,offset);
-					if(debug_tensorcore)
+					if(core->get_gpu()->gpgpu_ctx->debug_tensorcore)
 						printf("C:thread=%d,row=%d,col=%d,offset=%d\n",thrd,row,col,offset);
 					if(type2!=F16_TYPE){
 					 	matrix_c[row][col]=v[offset];
@@ -1913,10 +1916,10 @@ void mma_impl( const ptx_instruction *pI, core_t *core, warp_inst_t inst )
 			         printf("Invalid Operand Index\n" );
 			}
 		}
-		if(debug_tensorcore)
+		if(core->get_gpu()->gpgpu_ctx->debug_tensorcore)
 			printf("\n");
 	}
-	if(debug_tensorcore){
+	if(core->get_gpu()->gpgpu_ctx->debug_tensorcore){
 		printf("MATRIX_A\n");
 		for (i=0;i<16;i++){
 			for(j=0;j<16;j++){
@@ -1976,7 +1979,7 @@ void mma_impl( const ptx_instruction *pI, core_t *core, warp_inst_t inst )
 			}
 		}
 	}
-	if(debug_tensorcore){
+	if(core->get_gpu()->gpgpu_ctx->debug_tensorcore){
 		printf("MATRIX_D\n");
 		for (i=0;i<16;i++){
 			for(j=0;j<16;j++){
@@ -1995,7 +1998,7 @@ void mma_impl( const ptx_instruction *pI, core_t *core, warp_inst_t inst )
 		int col_t[8];	
 		for(k=0;k<8;k++){
 			mapping(thrd,LOAD_C,ROW,type,k,16,row_t[k],col_t[k],offset);
-			if(debug_tensorcore)
+			if(core->get_gpu()->gpgpu_ctx->debug_tensorcore)
 				printf("mma:store:row:%d,col%d\n",row_t[k],col_t[k]);
 		}
 		thread = core->get_thread_info()[tid+thrd];
@@ -2004,7 +2007,7 @@ void mma_impl( const ptx_instruction *pI, core_t *core, warp_inst_t inst )
 		if(type==F32_TYPE){
 			thread->set_wmma_vector_operand_values(dst,matrix_d[row_t[0]][col_t[0]],matrix_d[row_t[1]][col_t[1]],matrix_d[row_t[2]][col_t[2]],matrix_d[row_t[3]][col_t[3]],matrix_d[row_t[4]][col_t[4]],matrix_d[row_t[5]][col_t[5]],matrix_d[row_t[6]][col_t[6]],matrix_d[row_t[7]][col_t[7]]);
 		
-			if(debug_tensorcore)
+			if(core->get_gpu()->gpgpu_ctx->debug_tensorcore)
 			{
 				printf("thread%d:",thrd);
 				for(k=0;k<8;k++){
@@ -2014,7 +2017,7 @@ void mma_impl( const ptx_instruction *pI, core_t *core, warp_inst_t inst )
 			}
 		}
 		else if(type==F16_TYPE){
-			if(debug_tensorcore){	
+			if(core->get_gpu()->gpgpu_ctx->debug_tensorcore){	
 				printf("thread%d:",thrd);
 				for(k=0;k<8;k++){
 					temp=matrix_d[row_t[k]][col_t[k]].f16;
@@ -2034,7 +2037,7 @@ void mma_impl( const ptx_instruction *pI, core_t *core, warp_inst_t inst )
 			nw_data3.s64=((matrix_d[row_t[4]][col_t[4]].s64   & 0xffff))|((matrix_d[row_t[5]][col_t[5]].s64&0xffff)<<16);
 			nw_data4.s64=((matrix_d[row_t[6]][col_t[6]].s64   & 0xffff))|((matrix_d[row_t[7]][col_t[7]].s64&0xffff)<<16);
    			thread->set_vector_operand_values(dst,nw_data1,nw_data2,nw_data3,nw_data4);
-			if(debug_tensorcore)
+			if(core->get_gpu()->gpgpu_ctx->debug_tensorcore)
 		 		printf("thread%d=%x,%x,%x,%x",thrd,nw_data1.s64,nw_data2.s64,nw_data3.s64,nw_data4.s64);
 		
 		}
@@ -2092,15 +2095,15 @@ void call_impl( const ptx_instruction *pI, ptx_thread_info *thread )
 #if (CUDART_VERSION >= 5000)
    //Jin: handle device runtime apis for CDP
    else if(fname == "cudaGetParameterBufferV2") {
-      gpgpusim_cuda_getParameterBufferV2(pI, thread, target_func);
+      target_func->gpgpu_ctx->device_runtime->gpgpusim_cuda_getParameterBufferV2(pI, thread, target_func);
 	  return;
    }
    else if(fname == "cudaLaunchDeviceV2") {
-      gpgpusim_cuda_launchDeviceV2(pI, thread, target_func);
+      target_func->gpgpu_ctx->device_runtime->gpgpusim_cuda_launchDeviceV2(pI, thread, target_func);
 	  return;
    }
    else if(fname == "cudaStreamCreateWithFlags") {
-      gpgpusim_cuda_streamCreateWithFlags(pI, thread, target_func);
+      target_func->gpgpu_ctx->device_runtime->gpgpusim_cuda_streamCreateWithFlags(pI, thread, target_func);
 	  return;
    }
 #endif
@@ -2300,12 +2303,12 @@ ptx_reg_t f2x( ptx_reg_t x, unsigned from_width, unsigned to_width, int to_sign,
   half_float::half tmp_h;
    //assert( from_width == 32); 
 
-   enum cuda_math::cudaRoundMode mode = cuda_math::cudaRoundZero;
+   enum cudaRoundMode mode = cudaRoundZero;
    switch (rounding_mode) {
-   case RZI_OPTION: mode = cuda_math::cudaRoundZero;    break;
-   case RNI_OPTION: mode = cuda_math::cudaRoundNearest; break;
-   case RMI_OPTION: mode = cuda_math::cudaRoundMinInf;  break;
-   case RPI_OPTION: mode = cuda_math::cudaRoundPosInf;  break;
+   case RZI_OPTION: mode = cudaRoundZero;    break;
+   case RNI_OPTION: mode = cudaRoundNearest; break;
+   case RMI_OPTION: mode = cudaRoundMinInf;  break;
+   case RPI_OPTION: mode = cudaRoundPosInf;  break;
    default: break; 
    }
 
@@ -3128,7 +3131,7 @@ void mma_st_impl( const ptx_instruction *pI, core_t *core, warp_inst_t &inst )
    	decode_space(space,thread,src1,mem,addr);
 
    	type_info_key::type_decode(type,size,t);
-   	if(debug_tensorcore)
+   	if(core->get_gpu()->gpgpu_ctx->debug_tensorcore)
 		printf("mma_st: thrd=%d,addr=%x, fp(size=%d), stride=%d\n",thrd,addr_reg.u32,size,src2_data.u32);
 	addr_t new_addr = addr+thread_group_offset(thrd,wmma_type,wmma_layout,type,stride)*size/8;  
 	addr_t push_addr;
@@ -3148,7 +3151,7 @@ void mma_st_impl( const ptx_instruction *pI, core_t *core, warp_inst_t &inst )
        			mem->write(push_addr,size/8,&v[k].s64,thread,pI);
 			mem_txn_addr[num_mem_txn++]=push_addr;
 	
-			if(debug_tensorcore){
+			if(core->get_gpu()->gpgpu_ctx->debug_tensorcore){
 				printf("wmma:store:thread%d=%x,%x,%x,%x,%x,%x,%x,%x\n",thrd,v[0].s64,v[1].s64,v[2].s64,v[3].s64,v[4].s64,v[5].s64,v[6].s64,v[7].s64);   
 				float temp;
 				int l;
@@ -3175,7 +3178,7 @@ void mma_st_impl( const ptx_instruction *pI, core_t *core, warp_inst_t &inst )
 				mem_txn_addr[num_mem_txn++]=push_addr;
 			}
 	
-			if(debug_tensorcore)
+			if(core->get_gpu()->gpgpu_ctx->debug_tensorcore)
 				printf("wmma:store:thread%d=%x,%x,%x,%x,%x,%x,%x,%x\n",thrd,nw_v[0].s64,nw_v[1].s64,nw_v[2].s64,nw_v[3].s64,nw_v[4].s64,nw_v[5].s64,nw_v[6].s64,nw_v[7].s64);   
 		}
 	}
@@ -3238,7 +3241,7 @@ void mma_ld_impl( const ptx_instruction *pI, core_t *core, warp_inst_t &inst )
    	type_info_key::type_decode(type,size,t);
 	
 	ptx_reg_t data[16];
-   	if(debug_tensorcore)	
+   	if(core->get_gpu()->gpgpu_ctx->debug_tensorcore)	
 		printf("mma_ld: thrd=%d,addr=%x, fpsize=%d, stride=%d\n",thrd,src1_data.u32,size,src2_data.u32);
 	
 	addr_t new_addr = addr+thread_group_offset(thrd,wmma_type,wmma_layout,type,stride)*size/8;  
@@ -3334,7 +3337,7 @@ void mma_ld_impl( const ptx_instruction *pI, core_t *core, warp_inst_t &inst )
    		inst.data_size = 4; // 4 byte transaction 
    	assert( inst.memory_op == insn_memory_op );
 
-	if(debug_tensorcore){
+	if(core->get_gpu()->gpgpu_ctx->debug_tensorcore){
 		if(type==F16_TYPE){
 			printf("\nmma_ld:thread%d= ",thrd);
 			for(i=0;i<16;i++){
@@ -3384,7 +3387,7 @@ void mma_ld_impl( const ptx_instruction *pI, core_t *core, warp_inst_t &inst )
    			thread->set_vector_operand_values(dst,nw_data[0],nw_data[1],nw_data[2],nw_data[3]);
 		else
    			thread->set_wmma_vector_operand_values(dst,nw_data[0],nw_data[1],nw_data[2],nw_data[3],nw_data[4],nw_data[5],nw_data[6],nw_data[7]);
-		if(debug_tensorcore){	
+		if(core->get_gpu()->gpgpu_ctx->debug_tensorcore){	
 			printf("mma_ld:data[0].s64=%x,data[1].s64=%x,new_data[0].s64=%x\n",data[0].u64,data[1].u64,nw_data[0].u64);	
 			printf("mma_ld:data[2].s64=%x,data[3].s64=%x,new_data[1].s64=%x\n",data[2].u64,data[3].u64,nw_data[1].u64);	
 			printf("mma_ld:data[4].s64=%x,data[5].s64=%x,new_data[2].s64=%x\n",data[4].u64,data[5].u64,nw_data[2].u64);	
@@ -5141,7 +5144,6 @@ void sured_impl( const ptx_instruction *pI, ptx_thread_info *thread ) { inst_not
 void sust_impl( const ptx_instruction *pI, ptx_thread_info *thread ) { inst_not_implemented(pI); }
 void suq_impl( const ptx_instruction *pI, ptx_thread_info *thread ) { inst_not_implemented(pI); }
 
-ptx_reg_t* ptx_tex_regs = NULL;
 
 union intfloat {
    int a;
@@ -5255,9 +5257,10 @@ void tex_impl( const ptx_instruction *pI, ptx_thread_info *thread )
    unsigned c_type = pI->get_type2();
    fflush(stdout);
    ptx_reg_t data1, data2, data3, data4;
-   if (!ptx_tex_regs) ptx_tex_regs = new ptx_reg_t[4];
+   if (!thread->get_gpu()->gpgpu_ctx->func_sim->ptx_tex_regs)
+       thread->get_gpu()->gpgpu_ctx->func_sim->ptx_tex_regs = new ptx_reg_t[4];
    unsigned nelem = src2.get_vect_nelem();
-   thread->get_vector_operand_values(src2, ptx_tex_regs, nelem); //ptx_reg should be 4 entry vector type...coordinates into texture
+   thread->get_vector_operand_values(src2, thread->get_gpu()->gpgpu_ctx->func_sim->ptx_tex_regs, nelem); //ptx_reg should be 4 entry vector type...coordinates into texture
    /*
      For programs with many streams, textures can be bound and unbound
      asynchronously.  This means we need to use the kernel's "snapshot" of
@@ -5294,7 +5297,7 @@ void tex_impl( const ptx_instruction *pI, ptx_thread_info *thread )
       height = cuArray->height;
       if (texref->normalized) {
          assert(c_type == F32_TYPE); 
-         x_f32 = ptx_tex_regs[0].f32;
+         x_f32 = thread->get_gpu()->gpgpu_ctx->func_sim->ptx_tex_regs[0].f32;
          if (texref->addressMode[0] == cudaAddressModeClamp) {
             x_f32 = (x_f32 > 1.0)? 1.0 : x_f32;
             x_f32 = (x_f32 < 0.0)? 0.0 : x_f32;
@@ -5317,11 +5320,11 @@ void tex_impl( const ptx_instruction *pI, ptx_thread_info *thread )
       } else {
          switch ( c_type ) {
          case S32_TYPE: 
-            x = ptx_tex_regs[0].s32; 
+            x = thread->get_gpu()->gpgpu_ctx->func_sim->ptx_tex_regs[0].s32;
             assert(texref->filterMode == cudaFilterModePoint); 
             break; 
          case F32_TYPE: 
-            x_f32 = ptx_tex_regs[0].f32; 
+            x_f32 = thread->get_gpu()->gpgpu_ctx->func_sim->ptx_tex_regs[0].f32;
             alpha = x_f32 - floor(x_f32); // offset into subtexel (for linear sampling)
             x = (int) x_f32; 
             break; 
@@ -5344,8 +5347,8 @@ void tex_impl( const ptx_instruction *pI, ptx_thread_info *thread )
       width = cuArray->width;
       height = cuArray->height;
       if (texref->normalized) {
-         x_f32 = reduce_precision(ptx_tex_regs[0].f32,16);
-         y_f32 = reduce_precision(ptx_tex_regs[1].f32,15);
+         x_f32 = reduce_precision(thread->get_gpu()->gpgpu_ctx->func_sim->ptx_tex_regs[0].f32,16);
+         y_f32 = reduce_precision(thread->get_gpu()->gpgpu_ctx->func_sim->ptx_tex_regs[1].f32,15);
 
          if (texref->addressMode[0]) {//clamp
             if (x_f32<0) x_f32 = 0;
@@ -5375,8 +5378,8 @@ void tex_impl( const ptx_instruction *pI, ptx_thread_info *thread )
             y = (int) floor(y_f32 * height);
          }
       } else {
-         x_f32 = ptx_tex_regs[0].f32;
-         y_f32 = ptx_tex_regs[1].f32;
+         x_f32 = thread->get_gpu()->gpgpu_ctx->func_sim->ptx_tex_regs[0].f32;
+         y_f32 = thread->get_gpu()->gpgpu_ctx->func_sim->ptx_tex_regs[1].f32;
 
          alpha = x_f32 - floor(x_f32);
          beta = y_f32 - floor(y_f32);
diff --git a/src/cuda-sim/memory.cc b/src/cuda-sim/memory.cc
index 9554f55..4b2acdf 100644
--- a/src/cuda-sim/memory.cc
+++ b/src/cuda-sim/memory.cc
@@ -28,6 +28,7 @@
 #include "memory.h"
 #include <stdlib.h>
 #include "../debug.h"
+#include "../../libcuda/gpgpu_context.h"
 
 template<unsigned BSIZE> memory_space_impl<BSIZE>::memory_space_impl( std::string name, unsigned hash_size )
 {
@@ -88,7 +89,7 @@ template<unsigned BSIZE> void memory_space_impl<BSIZE>::write( mem_addr_t addr,
       for( i=m_watchpoints.begin(); i!=m_watchpoints.end(); i++ ) {
          mem_addr_t wa = i->second;
          if( ((addr<=wa) && ((addr+length)>wa)) || ((addr>wa) && (addr < (wa+4))) ) 
-            hit_watchpoint(i->first,thd,pI);
+            thd->get_gpu()->gpgpu_ctx->the_gpgpusim->g_the_gpu->hit_watchpoint(i->first,thd,pI);
       }
    }
 }
diff --git a/src/cuda-sim/ptx-stats.cc b/src/cuda-sim/ptx-stats.cc
index 0a9f08d..22517df 100644
--- a/src/cuda-sim/ptx-stats.cc
+++ b/src/cuda-sim/ptx-stats.cc
@@ -32,12 +32,9 @@
 #include <stdio.h>
 #include <map>
 #include "../tr1_hash_map.h"
+#include "../../libcuda/gpgpu_context.h"
 
-// options
-bool enable_ptx_file_line_stats;
-char * ptx_line_stats_filename = NULL;
-
-void ptx_file_line_stats_options(option_parser_t opp)
+void ptx_stats::ptx_file_line_stats_options(option_parser_t opp)
 {
     option_parser_register(opp, "-enable_ptx_file_line_stats", OPT_BOOL, 
                            &enable_ptx_file_line_stats, 
@@ -118,7 +115,7 @@ typedef tr1_hash_map<ptx_file_line, ptx_file_line_stats, hash_ptx_file_line> ptx
 static ptx_file_line_stats_map_t ptx_file_line_stats_tracker;
 
 // output statistics to a file
-void ptx_file_line_stats_write_file()
+void ptx_stats::ptx_file_line_stats_write_file()
 {
     // check if stat collection is turned on
     if (enable_ptx_file_line_stats == 0) return;
@@ -154,27 +151,27 @@ void ptx_file_line_stats_add_exec_count(const ptx_instruction *pInsn)
 
 // attribute pipeline latency to this ptx instruction (specified by the pc)
 // pipeline latency is the number of cycles a warp with this instruction spent in the pipeline
-void ptx_file_line_stats_add_latency(unsigned pc, unsigned latency)
+void ptx_stats::ptx_file_line_stats_add_latency(unsigned pc, unsigned latency)
 {
-    const ptx_instruction *pInsn = function_info::pc_to_instruction(pc);
+    const ptx_instruction *pInsn = gpgpu_ctx->pc_to_instruction(pc);
     
     ptx_file_line_stats_tracker[ptx_file_line(pInsn->source_file(), pInsn->source_line())].latency += latency;
 }
 
 // attribute dram traffic to this ptx instruction (specified by the pc)
 // dram traffic is counted in number of requests 
-void ptx_file_line_stats_add_dram_traffic(unsigned pc, unsigned dram_traffic)
+void ptx_stats::ptx_file_line_stats_add_dram_traffic(unsigned pc, unsigned dram_traffic)
 {
-    const ptx_instruction *pInsn = function_info::pc_to_instruction(pc);
+    const ptx_instruction *pInsn = gpgpu_ctx->pc_to_instruction(pc);
     
     ptx_file_line_stats_tracker[ptx_file_line(pInsn->source_file(), pInsn->source_line())].dram_traffic += dram_traffic;
 }
 
 // attribute the number of shared memory access cycles to a ptx instruction
 // counts both the number of warps doing shared memory access and the number of cycles involved
-void ptx_file_line_stats_add_smem_bank_conflict(unsigned pc, unsigned n_way_bkconflict)
+void ptx_stats::ptx_file_line_stats_add_smem_bank_conflict(unsigned pc, unsigned n_way_bkconflict)
 {
-    const ptx_instruction *pInsn = function_info::pc_to_instruction(pc);
+    const ptx_instruction *pInsn = gpgpu_ctx->pc_to_instruction(pc);
     
     ptx_file_line_stats& line_stats = ptx_file_line_stats_tracker[ptx_file_line(pInsn->source_file(), pInsn->source_line())];
     line_stats.smem_n_way_bank_conflict_total += n_way_bkconflict;
@@ -183,9 +180,9 @@ void ptx_file_line_stats_add_smem_bank_conflict(unsigned pc, unsigned n_way_bkco
 
 // attribute a non-coalesced mem access to a ptx instruction 
 // counts both the number of warps causing this and the number of memory requests generated
-void ptx_file_line_stats_add_uncoalesced_gmem(unsigned pc, unsigned n_access)
+void ptx_stats::ptx_file_line_stats_add_uncoalesced_gmem(unsigned pc, unsigned n_access)
 {
-    const ptx_instruction *pInsn = function_info::pc_to_instruction(pc);
+    const ptx_instruction *pInsn = gpgpu_ctx->pc_to_instruction(pc);
     
     ptx_file_line_stats& line_stats = ptx_file_line_stats_tracker[ptx_file_line(pInsn->source_file(), pInsn->source_line())];
     line_stats.gmem_n_access_total += n_access;
@@ -242,17 +239,17 @@ void ptx_file_line_stats_create_exposed_latency_tracker(int n_shader_cores)
 }
 
 // add an inflight memory instruction
-void ptx_file_line_stats_add_inflight_memory_insn(int sc_id, unsigned pc)
+void ptx_stats::ptx_file_line_stats_add_inflight_memory_insn(int sc_id, unsigned pc)
 {
-    const ptx_instruction *pInsn = function_info::pc_to_instruction(pc);
+    const ptx_instruction *pInsn = gpgpu_ctx->pc_to_instruction(pc);
 
     inflight_mem_tracker[sc_id].add_count(pInsn);
 }
 
 // remove an inflight memory instruction
-void ptx_file_line_stats_sub_inflight_memory_insn(int sc_id, unsigned pc)
+void ptx_stats::ptx_file_line_stats_sub_inflight_memory_insn(int sc_id, unsigned pc)
 {
-    const ptx_instruction *pInsn = function_info::pc_to_instruction(pc);
+    const ptx_instruction *pInsn = gpgpu_ctx->pc_to_instruction(pc);
 
     inflight_mem_tracker[sc_id].sub_count(pInsn);
 }
@@ -265,9 +262,9 @@ void ptx_file_line_stats_commit_exposed_latency(int sc_id, int exposed_latency)
 }
 
 // attribute the number of warp divergence to a ptx instruction
-void ptx_file_line_stats_add_warp_divergence(unsigned pc, unsigned n_way_divergence)
+void ptx_stats::ptx_file_line_stats_add_warp_divergence(unsigned pc, unsigned n_way_divergence)
 {
-    const ptx_instruction *pInsn = function_info::pc_to_instruction(pc);
+    const ptx_instruction *pInsn = gpgpu_ctx->pc_to_instruction(pc);
     
     ptx_file_line_stats& line_stats = ptx_file_line_stats_tracker[ptx_file_line(pInsn->source_file(), pInsn->source_line())];
     line_stats.warp_divergence += n_way_divergence;
diff --git a/src/cuda-sim/ptx-stats.h b/src/cuda-sim/ptx-stats.h
index 4fc6599..246b4ce 100644
--- a/src/cuda-sim/ptx-stats.h
+++ b/src/cuda-sim/ptx-stats.h
@@ -29,13 +29,6 @@
 
 #include "../option_parser.h"
 
-extern bool enable_ptx_file_line_stats;
-
-// set options
-void ptx_file_line_stats_options(option_parser_t opp);
-
-// output stats to a file
-void ptx_file_line_stats_write_file();
 
 #ifdef __cplusplus
 // stat collection interface to cuda-sim
@@ -44,15 +37,32 @@ void ptx_file_line_stats_add_exec_count(const ptx_instruction *pInsn);
 #endif
 
 // stat collection interface to gpgpu-sim
-void ptx_file_line_stats_add_latency(unsigned pc, unsigned latency);
-void ptx_file_line_stats_add_dram_traffic(unsigned pc, unsigned dram_traffic);
-void ptx_file_line_stats_add_smem_bank_conflict(unsigned pc, unsigned n_way_bkconflict);
-void ptx_file_line_stats_add_uncoalesced_gmem(unsigned pc, unsigned n_access);
 
 void ptx_file_line_stats_create_exposed_latency_tracker(int n_shader_cores);
-void ptx_file_line_stats_add_inflight_memory_insn(int sc_id, unsigned pc);
-void ptx_file_line_stats_sub_inflight_memory_insn(int sc_id, unsigned pc);
 void ptx_file_line_stats_commit_exposed_latency(int sc_id, int exposed_latency);
 
-void ptx_file_line_stats_add_warp_divergence(unsigned pc, unsigned n_way_divergence);
 
+class gpgpu_context;
+class ptx_stats {
+    public:
+	ptx_stats(gpgpu_context* ctx) {
+	    ptx_line_stats_filename = NULL;
+	    gpgpu_ctx = ctx;
+	}
+	char * ptx_line_stats_filename;
+	bool enable_ptx_file_line_stats;
+	gpgpu_context* gpgpu_ctx;
+	// set options
+	void ptx_file_line_stats_options(option_parser_t opp);
+
+	// output stats to a file
+	void ptx_file_line_stats_write_file();
+	// stat collection interface to gpgpu-sim
+	void ptx_file_line_stats_add_latency(unsigned pc, unsigned latency);
+	void ptx_file_line_stats_add_dram_traffic(unsigned pc, unsigned dram_traffic);
+	void ptx_file_line_stats_add_smem_bank_conflict(unsigned pc, unsigned n_way_bkconflict);
+	void ptx_file_line_stats_add_uncoalesced_gmem(unsigned pc, unsigned n_access);
+	void ptx_file_line_stats_add_inflight_memory_insn(int sc_id, unsigned pc);
+	void ptx_file_line_stats_sub_inflight_memory_insn(int sc_id, unsigned pc);
+	void ptx_file_line_stats_add_warp_divergence(unsigned pc, unsigned n_way_divergence);
+};
diff --git a/src/cuda-sim/ptx.l b/src/cuda-sim/ptx.l
index 36a8a4d..2dadda4 100644
--- a/src/cuda-sim/ptx.l
+++ b/src/cuda-sim/ptx.l
@@ -31,21 +31,27 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 %option noyywrap
 %option yylineno
 %option prefix="ptx_"
+
+%option bison-bridge
+%option reentrant
+
 %{
 #include "opcodes.h"
+#include "ptx_parser.h"
 #include "ptx.tab.h"
 #include <string.h>
+#include "../../libcuda/gpgpu_context.h"
 
-#define LINEBUF_SIZE (64*1024)
-char linebuf[LINEBUF_SIZE];
-unsigned col = 0;
-#define TC col+=strlen(ptx_text); 
+#define LINEBUF_SIZE (4*1024)
+#define TC recognizer->col+=strlen(yytext);
 #define CHECK_UNSIGNED \
 	if( yytext[strlen(yytext)-1]=='U' ) { \
 		printf("GPGPU-Sim: ERROR ** U modifier not implemented\n"); \
 		abort(); \
 	}
-int ptx_error( const char *s );
+#define YY_DECL int ptx_lex \
+	       (YYSTYPE * yylval_param , yyscan_t yyscanner, ptx_recognizer* recognizer)
+int ptx_error( yyscan_t yyscanner, ptx_recognizer* recognizer, const char *s );
 %}
 
 %s IN_STRING
@@ -54,123 +60,124 @@ int ptx_error( const char *s );
 %x NOT_OPCODE
 %%
 
-abs	TC; ptx_lval.int_value = ABS_OP; return OPCODE;
-add	TC; ptx_lval.int_value = ADD_OP; return OPCODE;
-addp	TC; ptx_lval.int_value = ADDP_OP; return OPCODE;
-addc    TC; ptx_lval.int_value = ADDC_OP; return OPCODE;
-and	TC; ptx_lval.int_value = AND_OP; return OPCODE;
-andn	TC; ptx_lval.int_value = ANDN_OP; return OPCODE;
-atom	TC; ptx_lval.int_value = ATOM_OP; return OPCODE;
-bar.warp 	TC; ptx_lval.int_value = NOP_OP; return OPCODE;
-bar 	TC; ptx_lval.int_value = BAR_OP; return OPCODE;
-bfe     TC; ptx_lval.int_value = BFE_OP; return OPCODE;
-bfi     TC; ptx_lval.int_value = BFI_OP; return OPCODE;
-bfind   TC; ptx_lval.int_value = BFIND_OP; return OPCODE;
-bra     TC; ptx_lval.int_value = BRA_OP; return OPCODE;
-brx     TC; ptx_lval.int_value = BRX_OP; return OPCODE;
-brev    TC; ptx_lval.int_value = BREV_OP; return OPCODE;
-brkpt   TC; ptx_lval.int_value = BRKPT_OP; return OPCODE;
+abs	TC; yylval->int_value = ABS_OP; return OPCODE;
+add	TC; yylval->int_value = ADD_OP; return OPCODE;
+addp	TC; yylval->int_value = ADDP_OP; return OPCODE;
+addc    TC; yylval->int_value = ADDC_OP; return OPCODE;
+and	TC; yylval->int_value = AND_OP; return OPCODE;
+andn	TC; yylval->int_value = ANDN_OP; return OPCODE;
+atom	TC; yylval->int_value = ATOM_OP; return OPCODE;
+bar.warp 	TC; yylval->int_value = NOP_OP; return OPCODE;
+bar 	TC; yylval->int_value = BAR_OP; return OPCODE;
+bfe     TC; yylval->int_value = BFE_OP; return OPCODE;
+bfi     TC; yylval->int_value = BFI_OP; return OPCODE;
+bfind   TC; yylval->int_value = BFIND_OP; return OPCODE;
+bra     TC; yylval->int_value = BRA_OP; return OPCODE;
+brx     TC; yylval->int_value = BRX_OP; return OPCODE;
+brev    TC; yylval->int_value = BREV_OP; return OPCODE;
+brkpt   TC; yylval->int_value = BRKPT_OP; return OPCODE;
 
-wmma	TC; ptx_lval.int_value = MMA_OP; return OPCODE;
-wmma\.load	TC; ptx_lval.int_value = MMA_LD_OP; return OPCODE;
-wmma\.store 	TC; ptx_lval.int_value = MMA_ST_OP; return OPCODE;
+wmma	TC; yylval->int_value = MMA_OP; return OPCODE;
+wmma\.load	TC; yylval->int_value = MMA_LD_OP; return OPCODE;
+wmma\.store 	TC; yylval->int_value = MMA_ST_OP; return OPCODE;
 
-call	TC; BEGIN(NOT_OPCODE); ptx_lval.int_value = CALL_OP; return OPCODE; // blocking opcode token in case the callee has the same name as an opcode
-callp   TC; BEGIN(NOT_OPCODE); ptx_lval.int_value = CALLP_OP; return OPCODE;
-clz	TC; ptx_lval.int_value = CLZ_OP; return OPCODE;
-cnot	TC; ptx_lval.int_value = CNOT_OP; return OPCODE;
-cos	TC; ptx_lval.int_value = COS_OP; return OPCODE;
-cvt	TC; ptx_lval.int_value = CVT_OP; return OPCODE;
-cvta	TC; ptx_lval.int_value = CVTA_OP; return OPCODE;
-div	TC; ptx_lval.int_value = DIV_OP; return OPCODE;
-dp4a	TC; ptx_lval.int_value = DP4A_OP; return OPCODE;
-ex2	TC; ptx_lval.int_value = EX2_OP; return OPCODE;
-exit	TC; ptx_lval.int_value = EXIT_OP; return OPCODE;
-fma     TC; ptx_lval.int_value = FMA_OP; return OPCODE;
-isspacep TC; ptx_lval.int_value = ISSPACEP_OP; return OPCODE;
-ld      TC; ptx_lval.int_value = LD_OP; return OPCODE;
-ld.volatile TC; ptx_lval.int_value = LD_OP; return OPCODE;
-ldu     TC; ptx_lval.int_value = LDU_OP; return OPCODE;
-lg2	TC; ptx_lval.int_value = LG2_OP; return OPCODE;
-mad24   TC; ptx_lval.int_value = MAD24_OP; return OPCODE;
-mad     TC; ptx_lval.int_value = MAD_OP; return OPCODE;
-madc	TC; ptx_lval.int_value = MADC_OP; return OPCODE;
-madp	TC; ptx_lval.int_value = MADP_OP; return OPCODE;
-max     TC; ptx_lval.int_value = MAX_OP; return OPCODE;
-membar  TC; ptx_lval.int_value = MEMBAR_OP; return OPCODE;
-min     TC; ptx_lval.int_value = MIN_OP; return OPCODE;
-mov     TC; ptx_lval.int_value = MOV_OP; return OPCODE;
-mul24   TC; ptx_lval.int_value = MUL24_OP; return OPCODE;
-mul     TC; ptx_lval.int_value = MUL_OP; return OPCODE;
-neg     TC; ptx_lval.int_value = NEG_OP; return OPCODE;
-nandn   TC; ptx_lval.int_value = NANDN_OP; return OPCODE;
-norn    TC; ptx_lval.int_value = NORN_OP; return OPCODE;
-not     TC; ptx_lval.int_value = NOT_OP; return OPCODE;
-or      TC; ptx_lval.int_value = OR_OP; return OPCODE;
-orn     TC; ptx_lval.int_value = ORN_OP; return OPCODE;
-pmevent TC; ptx_lval.int_value = PMEVENT_OP; return OPCODE;
-popc    TC; ptx_lval.int_value = POPC_OP; return OPCODE;
-prefetch TC; ptx_lval.int_value = PREFETCH_OP; return OPCODE;
-prefetchu TC; ptx_lval.int_value = PREFETCHU_OP; return OPCODE;
-prmt    TC; ptx_lval.int_value = PRMT_OP; return OPCODE;
-rcp	TC; ptx_lval.int_value = RCP_OP; return OPCODE;
-red     TC; ptx_lval.int_value = RED_OP; return OPCODE;
-rem	TC; ptx_lval.int_value = REM_OP; return OPCODE;
-ret	TC; ptx_lval.int_value = RET_OP; return OPCODE;
-retp     TC; ptx_lval.int_value = RETP_OP; return OPCODE;
-rsqrt	TC; ptx_lval.int_value = RSQRT_OP; return OPCODE;
-sad     TC; ptx_lval.int_value = SAD_OP; return OPCODE;
-selp	TC; ptx_lval.int_value = SELP_OP; return OPCODE;
-setp    TC; ptx_lval.int_value = SETP_OP; return OPCODE;
-set	TC; ptx_lval.int_value = SET_OP; return OPCODE;
-shfl	TC; ptx_lval.int_value = SHFL_OP; return OPCODE;
-shl     TC; ptx_lval.int_value = SHL_OP; return OPCODE;
-shr     TC; ptx_lval.int_value = SHR_OP; return OPCODE;
-sin	TC; ptx_lval.int_value = SIN_OP; return OPCODE;
-slct	TC; ptx_lval.int_value = SLCT_OP; return OPCODE;
-sqrt	TC; ptx_lval.int_value = SQRT_OP; return OPCODE;
-sst	TC; ptx_lval.int_value = SST_OP; return OPCODE;
-ssy     TC; ptx_lval.int_value = SSY_OP; return OPCODE;
-st      TC; ptx_lval.int_value = ST_OP; return OPCODE;
-st.volatile TC; ptx_lval.int_value = ST_OP; return OPCODE;
-sub	TC; ptx_lval.int_value = SUB_OP; return OPCODE;
-subc	TC; ptx_lval.int_value = SUBC_OP; return OPCODE;
-suld	TC; ptx_lval.int_value = SULD_OP; return OPCODE;
-sured	TC; ptx_lval.int_value = SURED_OP; return OPCODE;
-surst	TC; ptx_lval.int_value = SUST_OP; return OPCODE;
-suq	TC; ptx_lval.int_value = SUQ_OP; return OPCODE;
-tex	TC; BEGIN(NOT_OPCODE); ptx_lval.int_value = TEX_OP; return OPCODE;
-txq	TC; ptx_lval.int_value = TEX_OP; return OPCODE;
-trap	TC; ptx_lval.int_value = TRAP_OP; return OPCODE;
-vabsdiff TC; ptx_lval.int_value = VABSDIFF_OP; return OPCODE;
-vadd    TC; ptx_lval.int_value = VADD_OP; return OPCODE;
-vmad    TC; ptx_lval.int_value = VMAD_OP; return OPCODE;
-vmax    TC; ptx_lval.int_value = VMAX_OP; return OPCODE;
-vmin    TC; ptx_lval.int_value = VMIN_OP; return OPCODE;
-vset    TC; ptx_lval.int_value = VSET_OP; return OPCODE;
-vshl    TC; ptx_lval.int_value = VSHL_OP; return OPCODE;
-vshr    TC; ptx_lval.int_value = VSHR_OP; return OPCODE;
-vsub    TC; ptx_lval.int_value = VSUB_OP; return OPCODE;
-vote	TC; ptx_lval.int_value = VOTE_OP; return OPCODE;
-xor     TC; ptx_lval.int_value = XOR_OP; return OPCODE;
-nop     TC; ptx_lval.int_value = NOP_OP; return OPCODE;
-break  TC; ptx_lval.int_value = BREAK_OP; return OPCODE;
-breakaddr  TC; ptx_lval.int_value = BREAKADDR_OP; return OPCODE;
+call	TC; BEGIN(NOT_OPCODE); yylval->int_value = CALL_OP; return OPCODE; // blocking opcode token in case the callee has the same name as an opcode
+callp   TC; BEGIN(NOT_OPCODE); yylval->int_value = CALLP_OP; return OPCODE;
+clz	TC; yylval->int_value = CLZ_OP; return OPCODE;
+cnot	TC; yylval->int_value = CNOT_OP; return OPCODE;
+cos	TC; yylval->int_value = COS_OP; return OPCODE;
+cvt	TC; yylval->int_value = CVT_OP; return OPCODE;
+cvta	TC; yylval->int_value = CVTA_OP; return OPCODE;
+div	TC; yylval->int_value = DIV_OP; return OPCODE;
+dp4a	TC; yylval->int_value = DP4A_OP; return OPCODE;
+ex2	TC; yylval->int_value = EX2_OP; return OPCODE;
+exit	TC; yylval->int_value = EXIT_OP; return OPCODE;
+fma     TC; yylval->int_value = FMA_OP; return OPCODE;
+isspacep TC; yylval->int_value = ISSPACEP_OP; return OPCODE;
+ld      TC; yylval->int_value = LD_OP; return OPCODE;
+ld.volatile TC; yylval->int_value = LD_OP; return OPCODE;
+ldu     TC; yylval->int_value = LDU_OP; return OPCODE;
+lg2	TC; yylval->int_value = LG2_OP; return OPCODE;
+mad24   TC; yylval->int_value = MAD24_OP; return OPCODE;
+mad     TC; yylval->int_value = MAD_OP; return OPCODE;
+madc	TC; yylval->int_value = MADC_OP; return OPCODE;
+madp	TC; yylval->int_value = MADP_OP; return OPCODE;
+max     TC; yylval->int_value = MAX_OP; return OPCODE;
+membar  TC; yylval->int_value = MEMBAR_OP; return OPCODE;
+min     TC; yylval->int_value = MIN_OP; return OPCODE;
+mov     TC; yylval->int_value = MOV_OP; return OPCODE;
+mul24   TC; yylval->int_value = MUL24_OP; return OPCODE;
+mul     TC; yylval->int_value = MUL_OP; return OPCODE;
+neg     TC; yylval->int_value = NEG_OP; return OPCODE;
+nandn   TC; yylval->int_value = NANDN_OP; return OPCODE;
+norn    TC; yylval->int_value = NORN_OP; return OPCODE;
+not     TC; yylval->int_value = NOT_OP; return OPCODE;
+or      TC; yylval->int_value = OR_OP; return OPCODE;
+orn     TC; yylval->int_value = ORN_OP; return OPCODE;
+pmevent TC; yylval->int_value = PMEVENT_OP; return OPCODE;
+popc    TC; yylval->int_value = POPC_OP; return OPCODE;
+prefetch TC; yylval->int_value = PREFETCH_OP; return OPCODE;
+prefetchu TC; yylval->int_value = PREFETCHU_OP; return OPCODE;
+prmt    TC; yylval->int_value = PRMT_OP; return OPCODE;
+rcp	TC; yylval->int_value = RCP_OP; return OPCODE;
+red     TC; yylval->int_value = RED_OP; return OPCODE;
+rem	TC; yylval->int_value = REM_OP; return OPCODE;
+ret	TC; yylval->int_value = RET_OP; return OPCODE;
+retp     TC; yylval->int_value = RETP_OP; return OPCODE;
+rsqrt	TC; yylval->int_value = RSQRT_OP; return OPCODE;
+sad     TC; yylval->int_value = SAD_OP; return OPCODE;
+selp	TC; yylval->int_value = SELP_OP; return OPCODE;
+setp    TC; yylval->int_value = SETP_OP; return OPCODE;
+set	TC; yylval->int_value = SET_OP; return OPCODE;
+shfl	TC; yylval->int_value = SHFL_OP; return OPCODE;
+shl     TC; yylval->int_value = SHL_OP; return OPCODE;
+shr     TC; yylval->int_value = SHR_OP; return OPCODE;
+sin	TC; yylval->int_value = SIN_OP; return OPCODE;
+slct	TC; yylval->int_value = SLCT_OP; return OPCODE;
+sqrt	TC; yylval->int_value = SQRT_OP; return OPCODE;
+sst	TC; yylval->int_value = SST_OP; return OPCODE;
+ssy     TC; yylval->int_value = SSY_OP; return OPCODE;
+st      TC; yylval->int_value = ST_OP; return OPCODE;
+st.volatile TC; yylval->int_value = ST_OP; return OPCODE;
+sub	TC; yylval->int_value = SUB_OP; return OPCODE;
+subc	TC; yylval->int_value = SUBC_OP; return OPCODE;
+suld	TC; yylval->int_value = SULD_OP; return OPCODE;
+sured	TC; yylval->int_value = SURED_OP; return OPCODE;
+surst	TC; yylval->int_value = SUST_OP; return OPCODE;
+suq	TC; yylval->int_value = SUQ_OP; return OPCODE;
+tex	TC; BEGIN(NOT_OPCODE); yylval->int_value = TEX_OP; return OPCODE;
+txq	TC; yylval->int_value = TEX_OP; return OPCODE;
+trap	TC; yylval->int_value = TRAP_OP; return OPCODE;
+vabsdiff TC; yylval->int_value = VABSDIFF_OP; return OPCODE;
+vadd    TC; yylval->int_value = VADD_OP; return OPCODE;
+vmad    TC; yylval->int_value = VMAD_OP; return OPCODE;
+vmax    TC; yylval->int_value = VMAX_OP; return OPCODE;
+vmin    TC; yylval->int_value = VMIN_OP; return OPCODE;
+vset    TC; yylval->int_value = VSET_OP; return OPCODE;
+vshl    TC; yylval->int_value = VSHL_OP; return OPCODE;
+vshr    TC; yylval->int_value = VSHR_OP; return OPCODE;
+vsub    TC; yylval->int_value = VSUB_OP; return OPCODE;
+vote	TC; yylval->int_value = VOTE_OP; return OPCODE;
+xor     TC; yylval->int_value = XOR_OP; return OPCODE;
+nop     TC; yylval->int_value = NOP_OP; return OPCODE;
+break  TC; yylval->int_value = BREAK_OP; return OPCODE;
+breakaddr  TC; yylval->int_value = BREAKADDR_OP; return OPCODE;
 
 "CPTX_END"	printf("ENDING CUSTOM PTX.\n"); BEGIN(IN_COMMENT);
 
 <INITIAL,NOT_OPCODE,IN_INST,IN_FUNC_DECL>{
-\.a\.sync TC; ptx_lval.int_value = LOAD_A; return WMMA_DIRECTIVE;
-\.b\.sync TC; ptx_lval.int_value = LOAD_B; return WMMA_DIRECTIVE;
-\.c\.sync TC; ptx_lval.int_value = LOAD_C; return WMMA_DIRECTIVE;
-\.d\.sync TC; ptx_lval.int_value = STORE_D; return WMMA_DIRECTIVE;
-\.mma\.sync TC;ptx_lval.int_value=MMA; return WMMA_DIRECTIVE;
+\.a\.sync TC; yylval->int_value = LOAD_A; return WMMA_DIRECTIVE;
+\.b\.sync TC; yylval->int_value = LOAD_B; return WMMA_DIRECTIVE;
+\.c\.sync TC; yylval->int_value = LOAD_C; return WMMA_DIRECTIVE;
+\.d\.sync TC; yylval->int_value = STORE_D; return WMMA_DIRECTIVE;
+\.mma\.sync TC;yylval->int_value=MMA; return WMMA_DIRECTIVE;
+
+\.row TC; yylval->int_value = ROW; return LAYOUT;
+\.col TC; yylval->int_value = COL; return LAYOUT;
+\.m16n16k16 TC; yylval->int_value = M16N16K16; return CONFIGURATION;
+\.m32n8k16 TC; yylval->int_value = M32N8K16; return CONFIGURATION;
+\.m8n32k16 TC;  yylval->int_value = M8N32K16; return CONFIGURATION;
 
-\.row TC; ptx_lval.int_value = ROW; return LAYOUT;
-\.col TC; ptx_lval.int_value = COL; return LAYOUT;
-\.m16n16k16 TC; ptx_lval.int_value = M16N16K16; return CONFIGURATION;
-\.m32n8k16 TC; ptx_lval.int_value = M32N8K16; return CONFIGURATION;
-\.m8n32k16 TC; ptx_lval.int_value = M8N32K16; return CONFIGURATION;
 \.f4e TC;  return PRMT_F4E_MODE;
 \.b4e TC;  return PRMT_B4E_MODE;
 \.rc8 TC;  return PRMT_RC8_MODE;
@@ -183,8 +190,8 @@ breakaddr  TC; ptx_lval.int_value = BREAKADDR_OP; return OPCODE;
 \.byte	TC; return BYTE_DIRECTIVE; /* not in PTX 2.1 */
 \.callprototype TC; return CALLPROTOTYPE_DIRECTIVE;
 \.calltargets TC; return CALLTARGETS_DIRECTIVE;
-\.const\[[0-9]+\] TC; ptx_lval.int_value = atoi(yytext+7); return CONST_DIRECTIVE;
-\.const TC; ptx_lval.int_value = 0; return CONST_DIRECTIVE;
+\.const\[[0-9]+\] TC; yylval->int_value = atoi(yytext+7); return CONST_DIRECTIVE;
+\.const TC; yylval->int_value = 0; return CONST_DIRECTIVE;
 \.entry TC; return ENTRY_DIRECTIVE;
 \.extern TC; return EXTERN_DIRECTIVE;
 \.file	 TC; BEGIN(INITIAL); return FILE_DIRECTIVE;
@@ -219,40 +226,40 @@ breakaddr  TC; ptx_lval.int_value = BREAKADDR_OP; return OPCODE;
 \.constptr TC; return CONSTPTR_DIRECTIVE; /* Ptx plus directive for pointer to constant memory */
 \.ptr TC; return PTR_DIRECTIVE; /* Added for new OpenCL genrated code */
 
-"%clock" TC; ptx_lval.int_value = CLOCK_REG; return SPECIAL_REGISTER;
-"%halfclock" TC; ptx_lval.int_value = HALFCLOCK_ID; return SPECIAL_REGISTER;
-"%clock64" TC; ptx_lval.int_value = CLOCK64_REG; return SPECIAL_REGISTER;
-"%ctaid" TC; ptx_lval.int_value = CTAID_REG; return SPECIAL_REGISTER;
-"%envreg"[0-9]+ TC; sscanf(yytext+7,"%u",&ptx_lval.int_value); ptx_lval.int_value<<=16; ptx_lval.int_value += ENVREG_REG; return SPECIAL_REGISTER;
-"%gridid" TC; ptx_lval.int_value = GRIDID_REG; return SPECIAL_REGISTER;
-"%laneid"  TC; ptx_lval.int_value = LANEID_REG; return SPECIAL_REGISTER;
-"%lanemask_eq"  TC; ptx_lval.int_value = LANEMASK_EQ_REG; return SPECIAL_REGISTER;
-"%lanemask_le"  TC; ptx_lval.int_value = LANEMASK_LE_REG; return SPECIAL_REGISTER;
-"%lanemask_lt"  TC; ptx_lval.int_value = LANEMASK_LT_REG; return SPECIAL_REGISTER;
-"%lanemask_ge"  TC; ptx_lval.int_value = LANEMASK_GE_REG; return SPECIAL_REGISTER;
-"%lanemask_gt"  TC; ptx_lval.int_value = LANEMASK_GT_REG; return SPECIAL_REGISTER;
-"%nctaid" TC; ptx_lval.int_value = NCTAID_REG; return SPECIAL_REGISTER;
-"%ntid"  TC; ptx_lval.int_value = NTID_REG; return SPECIAL_REGISTER;
-"%nsmid"  TC; ptx_lval.int_value = NSMID_REG; return SPECIAL_REGISTER;
-"%nwarpid"  TC; ptx_lval.int_value = NWARPID_REG; return SPECIAL_REGISTER;
-"%pm"[0-3]  TC; sscanf(yytext+3,"%u",&ptx_lval.int_value); ptx_lval.int_value<<=16; ptx_lval.int_value += PM_REG; return SPECIAL_REGISTER;
-"%smid"  TC; ptx_lval.int_value = SMID_REG; return SPECIAL_REGISTER;
-"%tid"  TC; ptx_lval.int_value = TID_REG; return SPECIAL_REGISTER;
-"%warpid"  TC; ptx_lval.int_value = WARPID_REG; return SPECIAL_REGISTER;
-"WARP_SZ"  TC; ptx_lval.int_value = WARPSZ_REG; return SPECIAL_REGISTER;
+"%clock" TC; yylval->int_value = CLOCK_REG; return SPECIAL_REGISTER;
+"%halfclock" TC; yylval->int_value = HALFCLOCK_ID; return SPECIAL_REGISTER;
+"%clock64" TC; yylval->int_value = CLOCK64_REG; return SPECIAL_REGISTER;
+"%ctaid" TC; yylval->int_value = CTAID_REG; return SPECIAL_REGISTER;
+"%envreg"[0-9]+ TC; sscanf(yytext+7,"%u",&yylval->int_value); yylval->int_value<<=16; yylval->int_value += ENVREG_REG; return SPECIAL_REGISTER;
+"%gridid" TC; yylval->int_value = GRIDID_REG; return SPECIAL_REGISTER;
+"%laneid"  TC; yylval->int_value = LANEID_REG; return SPECIAL_REGISTER;
+"%lanemask_eq"  TC; yylval->int_value = LANEMASK_EQ_REG; return SPECIAL_REGISTER;
+"%lanemask_le"  TC; yylval->int_value = LANEMASK_LE_REG; return SPECIAL_REGISTER;
+"%lanemask_lt"  TC; yylval->int_value = LANEMASK_LT_REG; return SPECIAL_REGISTER;
+"%lanemask_ge"  TC; yylval->int_value = LANEMASK_GE_REG; return SPECIAL_REGISTER;
+"%lanemask_gt"  TC; yylval->int_value = LANEMASK_GT_REG; return SPECIAL_REGISTER;
+"%nctaid" TC; yylval->int_value = NCTAID_REG; return SPECIAL_REGISTER;
+"%ntid"  TC; yylval->int_value = NTID_REG; return SPECIAL_REGISTER;
+"%nsmid"  TC; yylval->int_value = NSMID_REG; return SPECIAL_REGISTER;
+"%nwarpid"  TC; yylval->int_value = NWARPID_REG; return SPECIAL_REGISTER;
+"%pm"[0-3]  TC; sscanf(yytext+3,"%u",&yylval->int_value); yylval->int_value<<=16; yylval->int_value += PM_REG; return SPECIAL_REGISTER;
+"%smid"  TC; yylval->int_value = SMID_REG; return SPECIAL_REGISTER;
+"%tid"  TC; yylval->int_value = TID_REG; return SPECIAL_REGISTER;
+"%warpid"  TC; yylval->int_value = WARPID_REG; return SPECIAL_REGISTER;
+"WARP_SZ"  TC; yylval->int_value = WARPSZ_REG; return SPECIAL_REGISTER;
 
-[a-zA-Z_][a-zA-Z0-9_$]*  TC; ptx_lval.string_value = strdup(yytext); return IDENTIFIER;
-[$%][a-zA-Z0-9_$]+  TC; ptx_lval.string_value = strdup(yytext); return IDENTIFIER;
+[a-zA-Z_][a-zA-Z0-9_$]*  TC; yylval->string_value = strdup(yytext); return IDENTIFIER;
+[$%][a-zA-Z0-9_$]+  TC; yylval->string_value = strdup(yytext); return IDENTIFIER;
 
-[0-9]+\.[0-9]+ 	 TC; sscanf(yytext,"%lf", &ptx_lval.double_value); return DOUBLE_OPERAND;
+[0-9]+\.[0-9]+ 	 TC; sscanf(yytext,"%lf", &yylval->double_value); return DOUBLE_OPERAND;
 	
-0[xX][0-9a-fA-F]+U? TC; CHECK_UNSIGNED; sscanf(yytext,"%x", &ptx_lval.int_value); return INT_OPERAND;
+0[xX][0-9a-fA-F]+U? TC; CHECK_UNSIGNED; sscanf(yytext,"%x", &yylval->int_value); return INT_OPERAND;
 0[0-7]+U?   	TC; printf("GPGPU-Sim: ERROR ** parsing octal not (yet) implemented\n"); abort(); return INT_OPERAND;
 0[bB][01]+U?  	TC; printf("GPGPU-Sim: ERROR ** parsing binary not (yet) implemented\n"); abort(); return INT_OPERAND;
-[-]?[0-9]+U?    TC; CHECK_UNSIGNED; ptx_lval.int_value =  atoi(yytext); return INT_OPERAND;
+[-]?[0-9]+U?    TC; CHECK_UNSIGNED; yylval->int_value =  atoi(yytext); return INT_OPERAND;
 
-0[fF][0-9a-fA-F]{8}  TC; sscanf(yytext+2,"%x", (unsigned*)(void*)&ptx_lval.float_value); return FLOAT_OPERAND;
-0[dD][0-9a-fA-F]{16}  TC; sscanf(yytext+2,"%Lx", (unsigned long long*)(void*)&ptx_lval.double_value); return DOUBLE_OPERAND;
+0[fF][0-9a-fA-F]{8}  TC; sscanf(yytext+2,"%x", (unsigned*)(void*)&yylval->float_value); return FLOAT_OPERAND;
+0[dD][0-9a-fA-F]{16}  TC; sscanf(yytext+2,"%Lx", (unsigned long long*)(void*)&yylval->double_value); return DOUBLE_OPERAND;
 
 \.s8   TC;  return S8_TYPE;
 \.s16  TC;  return S16_TYPE;
@@ -385,12 +392,12 @@ breakaddr  TC; ptx_lval.int_value = BREAKADDR_OP; return OPCODE;
 \.2d	TC; return GEOM_MODIFIER_2D;
 \.3d	TC; return GEOM_MODIFIER_3D;
 
-\.0	TC; ptx_lval.int_value = 0; return DIMENSION_MODIFIER;
-\.1	TC; ptx_lval.int_value = 1; return DIMENSION_MODIFIER;
-\.2	TC; ptx_lval.int_value = 2; return DIMENSION_MODIFIER;
-\.x	TC; ptx_lval.int_value = 0; return DIMENSION_MODIFIER;
-\.y	TC; ptx_lval.int_value = 1; return DIMENSION_MODIFIER;
-\.z	TC; ptx_lval.int_value = 2; return DIMENSION_MODIFIER;
+\.0	TC; yylval->int_value = 0; return DIMENSION_MODIFIER;
+\.1	TC; yylval->int_value = 1; return DIMENSION_MODIFIER;
+\.2	TC; yylval->int_value = 2; return DIMENSION_MODIFIER;
+\.x	TC; yylval->int_value = 0; return DIMENSION_MODIFIER;
+\.y	TC; yylval->int_value = 1; return DIMENSION_MODIFIER;
+\.z	TC; yylval->int_value = 2; return DIMENSION_MODIFIER;
 
 "-"	TC; return MINUS;
 "+"	TC; return PLUS;
@@ -413,7 +420,7 @@ breakaddr  TC; ptx_lval.int_value = BREAKADDR_OP; return OPCODE;
 
 "//"[^\n]* TC;	// eat single
 
-\n.*  col=0; strncpy(linebuf, yytext + 1, LINEBUF_SIZE); yyless( 1 );
+\n.*  recognizer->col=0; strncpy(recognizer->linebuf, yytext + 1, LINEBUF_SIZE); yyless( 1 );
 
 " " TC;
 "\t" TC;
@@ -441,28 +448,26 @@ breakaddr  TC; ptx_lval.int_value = BREAKADDR_OP; return OPCODE;
 }
 <IN_STRING>{
 "\"" 	TC; BEGIN(INITIAL); return STRING;
-[^\"]*	TC; ptx_lval.string_value = strdup(yytext); 
+[^\"]*	TC; yylval->string_value = strdup(yytext);
 }
 
 <*>\t@@DWARF.*\n
 
-<INITIAL,NOT_OPCODE,IN_FUNC_DECL>.  TC; ptx_error((const char*)NULL);
+<INITIAL,NOT_OPCODE,IN_FUNC_DECL>.  TC; ptx_error(yyscanner, recognizer, (const char*)NULL);
 %%
 
-extern int g_error_detected;
-extern const char *g_filename;
-
-int ptx_error( const char *s )
+int ptx_error( yyscan_t yyscanner, ptx_recognizer* recognizer, const char *s )
 {
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	int i;
-	g_error_detected = 1;
+	recognizer->g_error_detected = 1;
 	fflush(stdout);
 	if( s != NULL )
-		printf("%s:%u: Syntax error:\n\n", g_filename, ptx_lineno );
-	printf("   %s\n", linebuf );
+		printf("%s:%u Syntax error:\n\n", recognizer->gpgpu_ctx->g_filename, yylineno );
+	printf("   %s\n", recognizer->linebuf );
 	printf("   ");
-	for( i=0; i < col-1; i++ ) {
-		if( linebuf[i] == '\t' ) printf("\t");
+	for( i=0; i < recognizer->col-1; i++ ) {
+		if( recognizer->linebuf[i] == '\t' ) printf("\t");
 		else printf(" ");
 	}
 			
diff --git a/src/cuda-sim/ptx.y b/src/cuda-sim/ptx.y
index 45392fb..a01c3c6 100644
--- a/src/cuda-sim/ptx.y
+++ b/src/cuda-sim/ptx.y
@@ -27,6 +27,18 @@ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
+%{
+typedef void * yyscan_t;
+class ptx_recognizer;
+#include "../../libcuda/gpgpu_context.h"
+%}
+
+%define api.pure full
+%parse-param {yyscan_t scanner}
+%parse-param {ptx_recognizer* recognizer}
+%lex-param {yyscan_t scanner}
+%lex-param {ptx_recognizer* recognizer}
+
 %union {
   double double_value;
   float  float_value;
@@ -217,10 +229,9 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 	#include <stdlib.h>
 	#include <string.h>
 	#include <math.h>
-	void syntax_not_implemented();
-	extern int g_func_decl;
-	int ptx_lex(void);
-	int ptx_error(const char *);
+	void syntax_not_implemented(yyscan_t yyscanner, ptx_recognizer* recognizer);
+	int ptx_lex(YYSTYPE * yylval_param, yyscan_t yyscanner, ptx_recognizer* recognizer);
+	int ptx_error( yyscan_t yyscanner, ptx_recognizer* recognizer, const char *s );
 %}
 
 %%
@@ -231,96 +242,96 @@ input:	/* empty */
 	| input function_decl
 	;
 
-function_defn: function_decl { set_symtab($1); func_header(".skip"); } statement_block { end_function(); }
-	| function_decl { set_symtab($1); } block_spec_list { func_header(".skip"); } statement_block { end_function(); }
+function_defn: function_decl { recognizer->set_symtab($1); recognizer->func_header(".skip"); } statement_block { recognizer->end_function(); }
+	| function_decl { recognizer->set_symtab($1); } block_spec_list { recognizer->func_header(".skip"); } statement_block { recognizer->end_function(); }
 	;
 
-block_spec: MAXNTID_DIRECTIVE INT_OPERAND COMMA INT_OPERAND COMMA INT_OPERAND {func_header_info_int(".maxntid", $2);
-										func_header_info_int(",", $4);
-										func_header_info_int(",", $6); 
-                                                                                maxnt_id($2, $4, $6);}
-	| MINNCTAPERSM_DIRECTIVE INT_OPERAND { func_header_info_int(".minnctapersm", $2); printf("GPGPU-Sim: Warning: .minnctapersm ignored. \n"); }
-	| MAXNCTAPERSM_DIRECTIVE INT_OPERAND { func_header_info_int(".maxnctapersm", $2); printf("GPGPU-Sim: Warning: .maxnctapersm ignored. \n"); }
+block_spec: MAXNTID_DIRECTIVE INT_OPERAND COMMA INT_OPERAND COMMA INT_OPERAND {recognizer->func_header_info_int(".maxntid", $2);
+										recognizer->func_header_info_int(",", $4);
+										recognizer->func_header_info_int(",", $6);
+                                                                                recognizer->maxnt_id($2, $4, $6);}
+	| MINNCTAPERSM_DIRECTIVE INT_OPERAND { recognizer->func_header_info_int(".minnctapersm", $2); printf("GPGPU-Sim: Warning: .minnctapersm ignored. \n"); }
+	| MAXNCTAPERSM_DIRECTIVE INT_OPERAND { recognizer->func_header_info_int(".maxnctapersm", $2); printf("GPGPU-Sim: Warning: .maxnctapersm ignored. \n"); }
 	;
 
 block_spec_list: block_spec
 	| block_spec_list block_spec
 	;
 
-function_decl: function_decl_header LEFT_PAREN { start_function($1); func_header_info("(");} param_entry RIGHT_PAREN {func_header_info(")");} function_ident_param { $$ = reset_symtab(); }
-	| function_decl_header { start_function($1); } function_ident_param { $$ = reset_symtab(); }
-	| function_decl_header { start_function($1); add_function_name(""); g_func_decl=0; $$ = reset_symtab(); }
+function_decl: function_decl_header LEFT_PAREN { recognizer->start_function($1); recognizer->func_header_info("(");} param_entry RIGHT_PAREN {recognizer->func_header_info(")");} function_ident_param { $$ = recognizer->reset_symtab(); }
+	| function_decl_header { recognizer->start_function($1); } function_ident_param { $$ = recognizer->reset_symtab(); }
+	| function_decl_header { recognizer->start_function($1); recognizer->add_function_name(""); recognizer->g_func_decl=0; $$ = recognizer->reset_symtab(); }
 	;
 
-function_ident_param: IDENTIFIER { add_function_name($1); } LEFT_PAREN {func_header_info("(");} param_list RIGHT_PAREN { g_func_decl=0; func_header_info(")"); } 
-	| IDENTIFIER { add_function_name($1); g_func_decl=0; } 
+function_ident_param: IDENTIFIER { recognizer->add_function_name($1); } LEFT_PAREN {recognizer->func_header_info("(");} param_list RIGHT_PAREN { recognizer->g_func_decl=0; recognizer->func_header_info(")"); }
+	| IDENTIFIER { recognizer->add_function_name($1); recognizer->g_func_decl=0; }
 	;
 
-function_decl_header: ENTRY_DIRECTIVE { $$ = 1; g_func_decl=1; func_header(".entry"); }
-	| VISIBLE_DIRECTIVE ENTRY_DIRECTIVE { $$ = 1; g_func_decl=1; func_header(".entry"); }
-	| WEAK_DIRECTIVE ENTRY_DIRECTIVE { $$ = 1; g_func_decl=1; func_header(".entry"); }
-	| FUNC_DIRECTIVE { $$ = 0; g_func_decl=1; func_header(".func"); }
-	| VISIBLE_DIRECTIVE FUNC_DIRECTIVE { $$ = 0; g_func_decl=1; func_header(".func"); }
-	| WEAK_DIRECTIVE FUNC_DIRECTIVE { $$ = 0; g_func_decl=1; func_header(".func"); }
-	| EXTERN_DIRECTIVE FUNC_DIRECTIVE { $$ = 2; g_func_decl=1; func_header(".func"); }
-	| WEAK_DIRECTIVE FUNC_DIRECTIVE { $$ = 0; g_func_decl=1; func_header(".func"); }
+function_decl_header: ENTRY_DIRECTIVE { $$ = 1; recognizer->g_func_decl=1; recognizer->func_header(".entry"); }
+	| VISIBLE_DIRECTIVE ENTRY_DIRECTIVE { $$ = 1; recognizer->g_func_decl=1; recognizer->func_header(".entry"); }
+	| WEAK_DIRECTIVE ENTRY_DIRECTIVE { $$ = 1; recognizer->g_func_decl=1; recognizer->func_header(".entry"); }
+	| FUNC_DIRECTIVE { $$ = 0; recognizer->g_func_decl=1; recognizer->func_header(".func"); }
+	| VISIBLE_DIRECTIVE FUNC_DIRECTIVE { $$ = 0; recognizer->g_func_decl=1; recognizer->func_header(".func"); }
+	| WEAK_DIRECTIVE FUNC_DIRECTIVE { $$ = 0; recognizer->g_func_decl=1; recognizer->func_header(".func"); }
+	| EXTERN_DIRECTIVE FUNC_DIRECTIVE { $$ = 2; recognizer->g_func_decl=1; recognizer->func_header(".func"); }
+	| WEAK_DIRECTIVE FUNC_DIRECTIVE { $$ = 0; recognizer->g_func_decl=1; recognizer->func_header(".func"); }
 	;
 
 param_list: /*empty*/
-	| param_entry { add_directive(); }
-	| param_list COMMA {func_header_info(",");} param_entry { add_directive(); }
+	| param_entry { recognizer->add_directive(); }
+	| param_list COMMA {recognizer->func_header_info(",");} param_entry { recognizer->add_directive(); }
 
-param_entry: PARAM_DIRECTIVE { add_space_spec(param_space_unclassified,0); } variable_spec ptr_spec identifier_spec { add_function_arg(); }
-	| REG_DIRECTIVE { add_space_spec(reg_space,0); } variable_spec identifier_spec { add_function_arg(); }
+param_entry: PARAM_DIRECTIVE { recognizer->add_space_spec(param_space_unclassified,0); } variable_spec ptr_spec identifier_spec { recognizer->add_function_arg(); }
+	| REG_DIRECTIVE { recognizer->add_space_spec(reg_space,0); } variable_spec identifier_spec { recognizer->add_function_arg(); }
 
 ptr_spec: /*empty*/
         | PTR_DIRECTIVE ptr_space_spec ptr_align_spec
         | PTR_DIRECTIVE ptr_align_spec
 
-ptr_space_spec: GLOBAL_DIRECTIVE { add_ptr_spec(global_space); }
-              | LOCAL_DIRECTIVE  { add_ptr_spec(local_space); }
-              | SHARED_DIRECTIVE { add_ptr_spec(shared_space); }
-			  | CONST_DIRECTIVE { add_ptr_spec(global_space); }
+ptr_space_spec: GLOBAL_DIRECTIVE { recognizer->add_ptr_spec(global_space); }
+              | LOCAL_DIRECTIVE  { recognizer->add_ptr_spec(local_space); }
+              | SHARED_DIRECTIVE { recognizer->add_ptr_spec(shared_space); }
+			  | CONST_DIRECTIVE { recognizer->add_ptr_spec(global_space); }
 
 ptr_align_spec: ALIGN_DIRECTIVE INT_OPERAND
 
 statement_block: LEFT_BRACE statement_list RIGHT_BRACE 
 
-statement_list: directive_statement { add_directive(); }
-	| instruction_statement { add_instruction(); }
-	| statement_list directive_statement { add_directive(); }
-	| statement_list instruction_statement { add_instruction(); }
-	| statement_list {start_inst_group();} statement_block {end_inst_group();}
-	| {start_inst_group();} statement_block {end_inst_group();}
+statement_list: directive_statement { recognizer->add_directive(); }
+	| instruction_statement { recognizer->add_instruction(); }
+	| statement_list directive_statement { recognizer->add_directive(); }
+	| statement_list instruction_statement { recognizer->add_instruction(); }
+	| statement_list {recognizer->start_inst_group();} statement_block {recognizer->end_inst_group();}
+	| {recognizer->start_inst_group();} statement_block {recognizer->end_inst_group();}
 	;
 
 directive_statement: variable_declaration SEMI_COLON
-	| VERSION_DIRECTIVE DOUBLE_OPERAND { add_version_info($2, 0); }
-	| VERSION_DIRECTIVE DOUBLE_OPERAND PLUS { add_version_info($2,1); }
+	| VERSION_DIRECTIVE DOUBLE_OPERAND { recognizer->add_version_info($2, 0); }
+	| VERSION_DIRECTIVE DOUBLE_OPERAND PLUS { recognizer->add_version_info($2,1); }
 	| ADDRESS_SIZE_DIRECTIVE INT_OPERAND {/*Do nothing*/}
-	| TARGET_DIRECTIVE IDENTIFIER COMMA IDENTIFIER { target_header2($2,$4); }
-	| TARGET_DIRECTIVE IDENTIFIER COMMA IDENTIFIER COMMA IDENTIFIER { target_header3($2,$4,$6); }
-	| TARGET_DIRECTIVE IDENTIFIER { target_header($2); }
-	| FILE_DIRECTIVE INT_OPERAND STRING { add_file($2,$3); } 
-	| FILE_DIRECTIVE INT_OPERAND STRING COMMA INT_OPERAND COMMA INT_OPERAND { add_file($2,$3); } 	
+	| TARGET_DIRECTIVE IDENTIFIER COMMA IDENTIFIER { recognizer->target_header2($2,$4); }
+	| TARGET_DIRECTIVE IDENTIFIER COMMA IDENTIFIER COMMA IDENTIFIER { recognizer->target_header3($2,$4,$6); }
+	| TARGET_DIRECTIVE IDENTIFIER { recognizer->target_header($2); }
+	| FILE_DIRECTIVE INT_OPERAND STRING { recognizer->add_file($2,$3); }
+	| FILE_DIRECTIVE INT_OPERAND STRING COMMA INT_OPERAND COMMA INT_OPERAND { recognizer->add_file($2,$3); }
 	| LOC_DIRECTIVE INT_OPERAND INT_OPERAND INT_OPERAND 
-	| PRAGMA_DIRECTIVE STRING SEMI_COLON { add_pragma($2); }
+	| PRAGMA_DIRECTIVE STRING SEMI_COLON { recognizer->add_pragma($2); }
 	| function_decl SEMI_COLON {/*Do nothing*/}
 	;
 
-variable_declaration: variable_spec identifier_list { add_variables(); }
-	| variable_spec identifier_spec EQUALS initializer_list { add_variables(); }
-	| variable_spec identifier_spec EQUALS literal_operand { add_variables(); }
-	| CONSTPTR_DIRECTIVE IDENTIFIER COMMA IDENTIFIER COMMA INT_OPERAND { add_constptr($2, $4, $6); }
+variable_declaration: variable_spec identifier_list { recognizer->add_variables(); }
+	| variable_spec identifier_spec EQUALS initializer_list { recognizer->add_variables(); }
+	| variable_spec identifier_spec EQUALS literal_operand { recognizer->add_variables(); }
+	| CONSTPTR_DIRECTIVE IDENTIFIER COMMA IDENTIFIER COMMA INT_OPERAND { recognizer->add_constptr($2, $4, $6); }
 	;
 
-variable_spec: var_spec_list { set_variable_type(); }
+variable_spec: var_spec_list { recognizer->set_variable_type(); }
 
 identifier_list: identifier_spec
 	| identifier_list COMMA identifier_spec;
 
-identifier_spec: IDENTIFIER { add_identifier($1,0,NON_ARRAY_IDENTIFIER); func_header_info($1);}
-	| IDENTIFIER LEFT_ANGLE_BRACKET INT_OPERAND RIGHT_ANGLE_BRACKET { func_header_info($1); func_header_info_int("<", $3); func_header_info(">");
+identifier_spec: IDENTIFIER { recognizer->add_identifier($1,0,NON_ARRAY_IDENTIFIER); recognizer->func_header_info($1);}
+	| IDENTIFIER LEFT_ANGLE_BRACKET INT_OPERAND RIGHT_ANGLE_BRACKET { recognizer->func_header_info($1); recognizer->func_header_info_int("<", $3); recognizer->func_header_info(">");
 		int i,lbase,l;
 		char *id = NULL;
 		lbase = strlen($1);
@@ -328,12 +339,12 @@ identifier_spec: IDENTIFIER { add_identifier($1,0,NON_ARRAY_IDENTIFIER); func_he
 			l = lbase + (int)log10(i+1)+10;
 			id = (char*) malloc(l);
 			snprintf(id,l,"%s%u",$1,i);
-			add_identifier(id,0,NON_ARRAY_IDENTIFIER); 
+			recognizer->add_identifier(id,0,NON_ARRAY_IDENTIFIER);
 		}
 		free($1);
 	}
-	| IDENTIFIER LEFT_SQUARE_BRACKET RIGHT_SQUARE_BRACKET { add_identifier($1,0,ARRAY_IDENTIFIER_NO_DIM); func_header_info($1); func_header_info("["); func_header_info("]");}
-	| IDENTIFIER LEFT_SQUARE_BRACKET INT_OPERAND RIGHT_SQUARE_BRACKET { add_identifier($1,$3,ARRAY_IDENTIFIER); func_header_info($1); func_header_info_int("[",$3); func_header_info("]");}
+	| IDENTIFIER LEFT_SQUARE_BRACKET RIGHT_SQUARE_BRACKET { recognizer->add_identifier($1,0,ARRAY_IDENTIFIER_NO_DIM); recognizer->func_header_info($1); recognizer->func_header_info("["); recognizer->func_header_info("]");}
+	| IDENTIFIER LEFT_SQUARE_BRACKET INT_OPERAND RIGHT_SQUARE_BRACKET { recognizer->add_identifier($1,$3,ARRAY_IDENTIFIER); recognizer->func_header_info($1); recognizer->func_header_info_int("[",$3); recognizer->func_header_info("]");}
 	;
 
 var_spec_list: var_spec 
@@ -343,93 +354,93 @@ var_spec: space_spec
 	| type_spec
 	| align_spec
 	| VISIBLE_DIRECTIVE
-	| EXTERN_DIRECTIVE { add_extern_spec(); }
+	| EXTERN_DIRECTIVE { recognizer->add_extern_spec(); }
     | WEAK_DIRECTIVE
 	;
 
-align_spec: ALIGN_DIRECTIVE INT_OPERAND { add_alignment_spec($2); }
+align_spec: ALIGN_DIRECTIVE INT_OPERAND { recognizer->add_alignment_spec($2); }
 
-space_spec: REG_DIRECTIVE {  add_space_spec(reg_space,0); }
-	| SREG_DIRECTIVE  {  add_space_spec(reg_space,0); }
+space_spec: REG_DIRECTIVE {  recognizer->add_space_spec(reg_space,0); }
+	| SREG_DIRECTIVE  {  recognizer->add_space_spec(reg_space,0); }
 	| addressable_spec
 	;
 
-addressable_spec: CONST_DIRECTIVE {  add_space_spec(const_space,$1); }
-	| GLOBAL_DIRECTIVE 	  {  add_space_spec(global_space,0); }
-	| LOCAL_DIRECTIVE 	  {  add_space_spec(local_space,0); }
-	| PARAM_DIRECTIVE 	  {  add_space_spec(param_space_unclassified,0); }
-	| SHARED_DIRECTIVE 	  {  add_space_spec(shared_space,0); }
-	| SSTARR_DIRECTIVE    {  add_space_spec(sstarr_space,0); }
-	| SURF_DIRECTIVE 	  {  add_space_spec(surf_space,0); }
-	| TEX_DIRECTIVE 	  {  add_space_spec(tex_space,0); }
+addressable_spec: CONST_DIRECTIVE {  recognizer->add_space_spec(const_space,$1); }
+	| GLOBAL_DIRECTIVE 	  {  recognizer->add_space_spec(global_space,0); }
+	| LOCAL_DIRECTIVE 	  {  recognizer->add_space_spec(local_space,0); }
+	| PARAM_DIRECTIVE 	  {  recognizer->add_space_spec(param_space_unclassified,0); }
+	| SHARED_DIRECTIVE 	  {  recognizer->add_space_spec(shared_space,0); }
+	| SSTARR_DIRECTIVE    {  recognizer->add_space_spec(sstarr_space,0); }
+	| SURF_DIRECTIVE 	  {  recognizer->add_space_spec(surf_space,0); }
+	| TEX_DIRECTIVE 	  {  recognizer->add_space_spec(tex_space,0); }
 	;
 
 type_spec: scalar_type 
 	|  vector_spec scalar_type 
 	;
 
-vector_spec:  V2_TYPE {  add_option(V2_TYPE); func_header_info(".v2");}
-	| V3_TYPE     {  add_option(V3_TYPE); func_header_info(".v3");}
-	| V4_TYPE     {  add_option(V4_TYPE); func_header_info(".v4");}
+vector_spec:  V2_TYPE {  recognizer->add_option(V2_TYPE); recognizer->func_header_info(".v2");}
+	| V3_TYPE     {  recognizer->add_option(V3_TYPE); recognizer->func_header_info(".v3");}
+	| V4_TYPE     {  recognizer->add_option(V4_TYPE); recognizer->func_header_info(".v4");}
 	;
 
-scalar_type: S8_TYPE { add_scalar_type_spec( S8_TYPE ); }
-	| S16_TYPE   { add_scalar_type_spec( S16_TYPE ); }
-	| S32_TYPE   { add_scalar_type_spec( S32_TYPE ); }
-	| S64_TYPE   { add_scalar_type_spec( S64_TYPE ); }
-	| U8_TYPE    { add_scalar_type_spec( U8_TYPE ); }
-	| U16_TYPE   { add_scalar_type_spec( U16_TYPE ); }
-	| U32_TYPE   { add_scalar_type_spec( U32_TYPE ); }
-	| U64_TYPE   { add_scalar_type_spec( U64_TYPE ); }
-	| F16_TYPE   { add_scalar_type_spec( F16_TYPE ); }
-	| F32_TYPE   { add_scalar_type_spec( F32_TYPE ); }
-	| F64_TYPE   { add_scalar_type_spec( F64_TYPE ); }
-	| FF64_TYPE   { add_scalar_type_spec( FF64_TYPE ); }
-	| B8_TYPE    { add_scalar_type_spec( B8_TYPE );  }
-	| B16_TYPE   { add_scalar_type_spec( B16_TYPE ); }
-	| B32_TYPE   { add_scalar_type_spec( B32_TYPE ); }
-	| B64_TYPE   { add_scalar_type_spec( B64_TYPE ); }
-	| BB64_TYPE   { add_scalar_type_spec( BB64_TYPE ); }
-	| BB128_TYPE   { add_scalar_type_spec( BB128_TYPE ); }
-	| PRED_TYPE  { add_scalar_type_spec( PRED_TYPE ); }
-	| TEXREF_TYPE  { add_scalar_type_spec( TEXREF_TYPE ); }
-	| SAMPLERREF_TYPE  { add_scalar_type_spec( SAMPLERREF_TYPE ); }
-	| SURFREF_TYPE  { add_scalar_type_spec( SURFREF_TYPE ); }
+scalar_type: S8_TYPE { recognizer->add_scalar_type_spec( S8_TYPE ); }
+	| S16_TYPE   { recognizer->add_scalar_type_spec( S16_TYPE ); }
+	| S32_TYPE   { recognizer->add_scalar_type_spec( S32_TYPE ); }
+	| S64_TYPE   { recognizer->add_scalar_type_spec( S64_TYPE ); }
+	| U8_TYPE    { recognizer->add_scalar_type_spec( U8_TYPE ); }
+	| U16_TYPE   { recognizer->add_scalar_type_spec( U16_TYPE ); }
+	| U32_TYPE   { recognizer->add_scalar_type_spec( U32_TYPE ); }
+	| U64_TYPE   { recognizer->add_scalar_type_spec( U64_TYPE ); }
+	| F16_TYPE   { recognizer->add_scalar_type_spec( F16_TYPE ); }
+	| F32_TYPE   { recognizer->add_scalar_type_spec( F32_TYPE ); }
+	| F64_TYPE   { recognizer->add_scalar_type_spec( F64_TYPE ); }
+	| FF64_TYPE   { recognizer->add_scalar_type_spec( FF64_TYPE ); }
+	| B8_TYPE    { recognizer->add_scalar_type_spec( B8_TYPE );  }
+	| B16_TYPE   { recognizer->add_scalar_type_spec( B16_TYPE ); }
+	| B32_TYPE   { recognizer->add_scalar_type_spec( B32_TYPE ); }
+	| B64_TYPE   { recognizer->add_scalar_type_spec( B64_TYPE ); }
+	| BB64_TYPE   { recognizer->add_scalar_type_spec( BB64_TYPE ); }
+	| BB128_TYPE   { recognizer->add_scalar_type_spec( BB128_TYPE ); }
+	| PRED_TYPE  { recognizer->add_scalar_type_spec( PRED_TYPE ); }
+	| TEXREF_TYPE  { recognizer->add_scalar_type_spec( TEXREF_TYPE ); }
+	| SAMPLERREF_TYPE  { recognizer->add_scalar_type_spec( SAMPLERREF_TYPE ); }
+	| SURFREF_TYPE  { recognizer->add_scalar_type_spec( SURFREF_TYPE ); }
 	;
 
-initializer_list: LEFT_BRACE literal_list RIGHT_BRACE { add_array_initializer(); } 
-	| LEFT_BRACE initializer_list RIGHT_BRACE { syntax_not_implemented(); }
+initializer_list: LEFT_BRACE literal_list RIGHT_BRACE { recognizer->add_array_initializer(); }
+	| LEFT_BRACE initializer_list RIGHT_BRACE { syntax_not_implemented(scanner, recognizer); }
 
 literal_list: literal_operand
 	| literal_list COMMA literal_operand;
 
 instruction_statement:  instruction SEMI_COLON
-	| IDENTIFIER COLON { add_label($1); }    
+	| IDENTIFIER COLON { recognizer->add_label($1); }
 	| pred_spec instruction SEMI_COLON;
 
-instruction: opcode_spec LEFT_PAREN operand RIGHT_PAREN { set_return(); } COMMA operand COMMA LEFT_PAREN operand_list RIGHT_PAREN
+instruction: opcode_spec LEFT_PAREN operand RIGHT_PAREN { recognizer->set_return(); } COMMA operand COMMA LEFT_PAREN operand_list RIGHT_PAREN
 	| opcode_spec operand COMMA LEFT_PAREN operand_list RIGHT_PAREN
 	| opcode_spec operand COMMA LEFT_PAREN RIGHT_PAREN
 	| opcode_spec operand_list 
 	| opcode_spec
 	;
 
-opcode_spec: OPCODE { add_opcode($1); } option_list
-	| OPCODE { add_opcode($1); }
+opcode_spec: OPCODE { recognizer->add_opcode($1); } option_list
+	| OPCODE { recognizer->add_opcode($1); }
 
-pred_spec: PRED IDENTIFIER  { add_pred($2,0, -1); }
-	| PRED EXCLAMATION IDENTIFIER { add_pred($3,1, -1); } 
-	| PRED IDENTIFIER LT_OPTION  { add_pred($2,0,1); }
-	| PRED IDENTIFIER EQ_OPTION  { add_pred($2,0,2); }
-	| PRED IDENTIFIER LE_OPTION  { add_pred($2,0,3); }
-	| PRED IDENTIFIER NE_OPTION  { add_pred($2,0,5); }
-	| PRED IDENTIFIER GE_OPTION  { add_pred($2,0,6); }
-	| PRED IDENTIFIER EQU_OPTION  { add_pred($2,0,10); }
-	| PRED IDENTIFIER GTU_OPTION  { add_pred($2,0,12); }
-	| PRED IDENTIFIER NEU_OPTION  { add_pred($2,0,13); }
-	| PRED IDENTIFIER CF_OPTION  { add_pred($2,0,17); }
-	| PRED IDENTIFIER SF_OPTION  { add_pred($2,0,19); }
-	| PRED IDENTIFIER NSF_OPTION  { add_pred($2,0,28); }
+pred_spec: PRED IDENTIFIER  { recognizer->add_pred($2,0, -1); }
+	| PRED EXCLAMATION IDENTIFIER { recognizer->add_pred($3,1, -1); }
+	| PRED IDENTIFIER LT_OPTION  { recognizer->add_pred($2,0,1); }
+	| PRED IDENTIFIER EQ_OPTION  { recognizer->add_pred($2,0,2); }
+	| PRED IDENTIFIER LE_OPTION  { recognizer->add_pred($2,0,3); }
+	| PRED IDENTIFIER NE_OPTION  { recognizer->add_pred($2,0,5); }
+	| PRED IDENTIFIER GE_OPTION  { recognizer->add_pred($2,0,6); }
+	| PRED IDENTIFIER EQU_OPTION  { recognizer->add_pred($2,0,10); }
+	| PRED IDENTIFIER GTU_OPTION  { recognizer->add_pred($2,0,12); }
+	| PRED IDENTIFIER NEU_OPTION  { recognizer->add_pred($2,0,13); }
+	| PRED IDENTIFIER CF_OPTION  { recognizer->add_pred($2,0,17); }
+	| PRED IDENTIFIER SF_OPTION  { recognizer->add_pred($2,0,19); }
+	| PRED IDENTIFIER NSF_OPTION  { recognizer->add_pred($2,0,28); }
 	;
 
 option_list: option
@@ -441,108 +452,108 @@ option: type_spec
 	| rounding_mode
 	| wmma_spec 
 	| prmt_spec 
-	| SYNC_OPTION { add_option(SYNC_OPTION); }	
-	| ARRIVE_OPTION { add_option(ARRIVE_OPTION); }
-	| RED_OPTION { add_option(RED_OPTION); }	
-	| UNI_OPTION { add_option(UNI_OPTION); }
-	| WIDE_OPTION { add_option(WIDE_OPTION); }
-	| ANY_OPTION { add_option(ANY_OPTION); }
-	| ALL_OPTION { add_option(ALL_OPTION); }
-	| BALLOT_OPTION { add_option(BALLOT_OPTION); }
-	| GLOBAL_OPTION { add_option(GLOBAL_OPTION); }
-	| CTA_OPTION { add_option(CTA_OPTION); }
-	| SYS_OPTION { add_option(SYS_OPTION); }
-	| GEOM_MODIFIER_1D { add_option(GEOM_MODIFIER_1D); }
-	| GEOM_MODIFIER_2D { add_option(GEOM_MODIFIER_2D); }
-	| GEOM_MODIFIER_3D { add_option(GEOM_MODIFIER_3D); }
-	| SAT_OPTION { add_option(SAT_OPTION); }
- 	| FTZ_OPTION { add_option(FTZ_OPTION); } 
- 	| NEG_OPTION { add_option(NEG_OPTION); } 
-	| APPROX_OPTION { add_option(APPROX_OPTION); }
-	| FULL_OPTION { add_option(FULL_OPTION); }
-	| EXIT_OPTION { add_option(EXIT_OPTION); }
-	| ABS_OPTION { add_option(ABS_OPTION); }
+	| SYNC_OPTION { recognizer->add_option(SYNC_OPTION); }
+	| ARRIVE_OPTION { recognizer->add_option(ARRIVE_OPTION); }
+	| RED_OPTION { recognizer->add_option(RED_OPTION); }
+	| UNI_OPTION { recognizer->add_option(UNI_OPTION); }
+	| WIDE_OPTION { recognizer->add_option(WIDE_OPTION); }
+	| ANY_OPTION { recognizer->add_option(ANY_OPTION); }
+	| ALL_OPTION { recognizer->add_option(ALL_OPTION); }
+	| BALLOT_OPTION { recognizer->add_option(BALLOT_OPTION); }
+	| GLOBAL_OPTION { recognizer->add_option(GLOBAL_OPTION); }
+	| CTA_OPTION { recognizer->add_option(CTA_OPTION); }
+	| SYS_OPTION { recognizer->add_option(SYS_OPTION); }
+	| GEOM_MODIFIER_1D { recognizer->add_option(GEOM_MODIFIER_1D); }
+	| GEOM_MODIFIER_2D { recognizer->add_option(GEOM_MODIFIER_2D); }
+	| GEOM_MODIFIER_3D { recognizer->add_option(GEOM_MODIFIER_3D); }
+	| SAT_OPTION { recognizer->add_option(SAT_OPTION); }
+	| FTZ_OPTION { recognizer->add_option(FTZ_OPTION); }
+	| NEG_OPTION { recognizer->add_option(NEG_OPTION); }
+	| APPROX_OPTION { recognizer->add_option(APPROX_OPTION); }
+	| FULL_OPTION { recognizer->add_option(FULL_OPTION); }
+	| EXIT_OPTION { recognizer->add_option(EXIT_OPTION); }
+	| ABS_OPTION { recognizer->add_option(ABS_OPTION); }
 	| atomic_operation_spec ;
-	| TO_OPTION { add_option(TO_OPTION); }
-	| HALF_OPTION { add_option(HALF_OPTION); }
-	| EXTP_OPTION { add_option(EXTP_OPTION); }
-	| CA_OPTION { add_option(CA_OPTION); }
-	| CG_OPTION { add_option(CG_OPTION); }
-	| CS_OPTION { add_option(CS_OPTION); }
-	| LU_OPTION { add_option(LU_OPTION); }
-	| CV_OPTION { add_option(CV_OPTION); }
-	| WB_OPTION { add_option(WB_OPTION); }
-	| WT_OPTION { add_option(WT_OPTION); }
-	| NC_OPTION { add_option(NC_OPTION); }
-	| UP_OPTION { add_option(UP_OPTION); }
-	| DOWN_OPTION { add_option(DOWN_OPTION); }
-	| BFLY_OPTION { add_option(BFLY_OPTION); }
-	| IDX_OPTION { add_option(IDX_OPTION); }
+	| TO_OPTION { recognizer->add_option(TO_OPTION); }
+	| HALF_OPTION { recognizer->add_option(HALF_OPTION); }
+	| EXTP_OPTION { recognizer->add_option(EXTP_OPTION); }
+	| CA_OPTION { recognizer->add_option(CA_OPTION); }
+	| CG_OPTION { recognizer->add_option(CG_OPTION); }
+	| CS_OPTION { recognizer->add_option(CS_OPTION); }
+	| LU_OPTION { recognizer->add_option(LU_OPTION); }
+	| CV_OPTION { recognizer->add_option(CV_OPTION); }
+	| WB_OPTION { recognizer->add_option(WB_OPTION); }
+	| WT_OPTION { recognizer->add_option(WT_OPTION); }
+	| NC_OPTION { recognizer->add_option(NC_OPTION); }
+	| UP_OPTION { recognizer->add_option(UP_OPTION); }
+	| DOWN_OPTION { recognizer->add_option(DOWN_OPTION); }
+	| BFLY_OPTION { recognizer->add_option(BFLY_OPTION); }
+	| IDX_OPTION { recognizer->add_option(IDX_OPTION); }
 	;
 
-atomic_operation_spec: ATOMIC_AND { add_option(ATOMIC_AND); } 
-	| ATOMIC_POPC { add_option(ATOMIC_POPC); }
-	| ATOMIC_OR { add_option(ATOMIC_OR); } 
-	| ATOMIC_XOR { add_option(ATOMIC_XOR); } 
-	| ATOMIC_CAS { add_option(ATOMIC_CAS); } 
-	| ATOMIC_EXCH { add_option(ATOMIC_EXCH); } 
-	| ATOMIC_ADD { add_option(ATOMIC_ADD); } 
-	| ATOMIC_INC { add_option(ATOMIC_INC); } 
-	| ATOMIC_DEC { add_option(ATOMIC_DEC); } 
-	| ATOMIC_MIN { add_option(ATOMIC_MIN); } 
-	| ATOMIC_MAX { add_option(ATOMIC_MAX); } 
+atomic_operation_spec: ATOMIC_AND { recognizer->add_option(ATOMIC_AND); }
+	| ATOMIC_POPC { recognizer->add_option(ATOMIC_POPC); }
+	| ATOMIC_OR { recognizer->add_option(ATOMIC_OR); }
+	| ATOMIC_XOR { recognizer->add_option(ATOMIC_XOR); }
+	| ATOMIC_CAS { recognizer->add_option(ATOMIC_CAS); }
+	| ATOMIC_EXCH { recognizer->add_option(ATOMIC_EXCH); }
+	| ATOMIC_ADD { recognizer->add_option(ATOMIC_ADD); }
+	| ATOMIC_INC { recognizer->add_option(ATOMIC_INC); }
+	| ATOMIC_DEC { recognizer->add_option(ATOMIC_DEC); }
+	| ATOMIC_MIN { recognizer->add_option(ATOMIC_MIN); }
+	| ATOMIC_MAX { recognizer->add_option(ATOMIC_MAX); }
 	;
 
 rounding_mode: floating_point_rounding_mode
 	| integer_rounding_mode;
 
 
-floating_point_rounding_mode: RN_OPTION { add_option(RN_OPTION); } 
- 	| RZ_OPTION { add_option(RZ_OPTION); } 
- 	| RM_OPTION { add_option(RM_OPTION); } 
- 	| RP_OPTION { add_option(RP_OPTION); } 
+floating_point_rounding_mode: RN_OPTION { recognizer->add_option(RN_OPTION); }
+	| RZ_OPTION { recognizer->add_option(RZ_OPTION); }
+	| RM_OPTION { recognizer->add_option(RM_OPTION); }
+	| RP_OPTION { recognizer->add_option(RP_OPTION); }
 	;
 
-integer_rounding_mode: RNI_OPTION { add_option(RNI_OPTION); } 
-	| RZI_OPTION { add_option(RZI_OPTION); } 
- 	| RMI_OPTION { add_option(RMI_OPTION); } 
- 	| RPI_OPTION { add_option(RPI_OPTION); } 
+integer_rounding_mode: RNI_OPTION { recognizer->add_option(RNI_OPTION); }
+	| RZI_OPTION { recognizer->add_option(RZI_OPTION); }
+	| RMI_OPTION { recognizer->add_option(RMI_OPTION); }
+	| RPI_OPTION { recognizer->add_option(RPI_OPTION); }
 	;
 
-compare_spec:EQ_OPTION { add_option(EQ_OPTION); } 
-	| NE_OPTION { add_option(NE_OPTION); } 
-	| LT_OPTION { add_option(LT_OPTION); } 
-	| LE_OPTION { add_option(LE_OPTION); } 
-	| GT_OPTION { add_option(GT_OPTION); } 
-	| GE_OPTION { add_option(GE_OPTION); } 
-	| LO_OPTION { add_option(LO_OPTION); } 
-	| LS_OPTION { add_option(LS_OPTION); } 
-	| HI_OPTION { add_option(HI_OPTION); } 
-	| HS_OPTION  { add_option(HS_OPTION); } 
-	| EQU_OPTION { add_option(EQU_OPTION); } 
-	| NEU_OPTION { add_option(NEU_OPTION); } 
-	| LTU_OPTION { add_option(LTU_OPTION); } 
-	| LEU_OPTION { add_option(LEU_OPTION); } 
-	| GTU_OPTION { add_option(GTU_OPTION); } 
-	| GEU_OPTION { add_option(GEU_OPTION); } 
-	| NUM_OPTION { add_option(NUM_OPTION); } 
-	| NAN_OPTION { add_option(NAN_OPTION); } 
+compare_spec:EQ_OPTION { recognizer->add_option(EQ_OPTION); }
+	| NE_OPTION { recognizer->add_option(NE_OPTION); }
+	| LT_OPTION { recognizer->add_option(LT_OPTION); }
+	| LE_OPTION { recognizer->add_option(LE_OPTION); }
+	| GT_OPTION { recognizer->add_option(GT_OPTION); }
+	| GE_OPTION { recognizer->add_option(GE_OPTION); }
+	| LO_OPTION { recognizer->add_option(LO_OPTION); }
+	| LS_OPTION { recognizer->add_option(LS_OPTION); }
+	| HI_OPTION { recognizer->add_option(HI_OPTION); }
+	| HS_OPTION  { recognizer->add_option(HS_OPTION); }
+	| EQU_OPTION { recognizer->add_option(EQU_OPTION); }
+	| NEU_OPTION { recognizer->add_option(NEU_OPTION); }
+	| LTU_OPTION { recognizer->add_option(LTU_OPTION); }
+	| LEU_OPTION { recognizer->add_option(LEU_OPTION); }
+	| GTU_OPTION { recognizer->add_option(GTU_OPTION); }
+	| GEU_OPTION { recognizer->add_option(GEU_OPTION); }
+	| NUM_OPTION { recognizer->add_option(NUM_OPTION); }
+	| NAN_OPTION { recognizer->add_option(NAN_OPTION); }
 	;
 
-prmt_spec: PRMT_F4E_MODE { add_option( PRMT_F4E_MODE); }
-	|  PRMT_B4E_MODE { add_option( PRMT_B4E_MODE); }
-	|  PRMT_RC8_MODE { add_option( PRMT_RC8_MODE); }
-	|  PRMT_RC16_MODE{ add_option( PRMT_RC16_MODE);}
-	|  PRMT_ECL_MODE { add_option( PRMT_ECL_MODE); }
-	|  PRMT_ECR_MODE { add_option( PRMT_ECR_MODE); }
+prmt_spec: PRMT_F4E_MODE { recognizer->add_option( PRMT_F4E_MODE); }
+	|  PRMT_B4E_MODE { recognizer->add_option( PRMT_B4E_MODE); }
+	|  PRMT_RC8_MODE { recognizer->add_option( PRMT_RC8_MODE); }
+	|  PRMT_RC16_MODE{ recognizer->add_option( PRMT_RC16_MODE);}
+	|  PRMT_ECL_MODE { recognizer->add_option( PRMT_ECL_MODE); }
+	|  PRMT_ECR_MODE { recognizer->add_option( PRMT_ECR_MODE); }
 	;
 
-wmma_spec: WMMA_DIRECTIVE LAYOUT CONFIGURATION{add_space_spec(global_space,0);add_ptr_spec(global_space); add_wmma_option($1);add_wmma_option($2);add_wmma_option($3);}
-	| WMMA_DIRECTIVE LAYOUT LAYOUT CONFIGURATION{add_wmma_option($1);add_wmma_option($2);add_wmma_option($3);add_wmma_option($4);}
+wmma_spec: WMMA_DIRECTIVE LAYOUT CONFIGURATION{recognizer->add_space_spec(global_space,0);recognizer->add_ptr_spec(global_space); recognizer->add_wmma_option($1);recognizer->add_wmma_option($2);recognizer->add_wmma_option($3);}
+	| WMMA_DIRECTIVE LAYOUT LAYOUT CONFIGURATION{recognizer->add_wmma_option($1);recognizer->add_wmma_option($2);recognizer->add_wmma_option($3);recognizer->add_wmma_option($4);}
 	;
 
-vp_spec: WMMA_DIRECTIVE LAYOUT CONFIGURATION{add_space_spec(global_space,0);add_ptr_spec(global_space);add_wmma_option($1);add_wmma_option($2);add_wmma_option($3);}
-	| WMMA_DIRECTIVE LAYOUT LAYOUT CONFIGURATION{add_wmma_option($1);add_wmma_option($2);add_wmma_option($3);add_wmma_option($4);}
+vp_spec: WMMA_DIRECTIVE LAYOUT CONFIGURATION{recognizer->add_space_spec(global_space,0);recognizer->add_ptr_spec(global_space);recognizer->add_wmma_option($1);recognizer->add_wmma_option($2);recognizer->add_wmma_option($3);}
+	| WMMA_DIRECTIVE LAYOUT LAYOUT CONFIGURATION{recognizer->add_wmma_option($1);recognizer->add_wmma_option($2);recognizer->add_wmma_option($3);recognizer->add_wmma_option($4);}
 	;
 
 
@@ -550,80 +561,77 @@ vp_spec: WMMA_DIRECTIVE LAYOUT CONFIGURATION{add_space_spec(global_space,0);add_
 operand_list: operand
 	| operand COMMA operand_list;
 
-operand: IDENTIFIER  { add_scalar_operand( $1 ); }
-	| EXCLAMATION IDENTIFIER { add_neg_pred_operand( $2 ); }
-	| MINUS IDENTIFIER  { add_scalar_operand( $2 ); change_operand_neg(); }
+operand: IDENTIFIER  { recognizer->add_scalar_operand( $1 ); }
+	| EXCLAMATION IDENTIFIER { recognizer->add_neg_pred_operand( $2 ); }
+	| MINUS IDENTIFIER  { recognizer->add_scalar_operand( $2 ); recognizer->change_operand_neg(); }
 	| memory_operand
 	| literal_operand
 	| builtin_operand
 	| vector_operand
-	| MINUS vector_operand { change_operand_neg(); }
+	| MINUS vector_operand { recognizer->change_operand_neg(); }
 	| tex_operand
-	| IDENTIFIER PLUS INT_OPERAND { add_address_operand($1,$3); }
-	| IDENTIFIER LO_OPTION { add_scalar_operand( $1 ); change_operand_lohi(1);}
-	| MINUS IDENTIFIER LO_OPTION { add_scalar_operand( $2 ); change_operand_lohi(1); change_operand_neg();}
-	| IDENTIFIER HI_OPTION { add_scalar_operand( $1 ); change_operand_lohi(2);}
-	| MINUS IDENTIFIER HI_OPTION { add_scalar_operand( $2 ); change_operand_lohi(2); change_operand_neg();}
-	| IDENTIFIER PIPE IDENTIFIER { add_2vector_operand($1,$3); change_double_operand_type(-1);}
-	| IDENTIFIER PIPE IDENTIFIER LO_OPTION { add_2vector_operand($1,$3); change_double_operand_type(-1); change_operand_lohi(1);}
-	| IDENTIFIER PIPE IDENTIFIER HI_OPTION { add_2vector_operand($1,$3); change_double_operand_type(-1); change_operand_lohi(2);}
-	| IDENTIFIER BACKSLASH IDENTIFIER { add_2vector_operand($1,$3); change_double_operand_type(-3);}
-	| IDENTIFIER BACKSLASH IDENTIFIER LO_OPTION { add_2vector_operand($1,$3); change_double_operand_type(-3); change_operand_lohi(1);}
-	| IDENTIFIER BACKSLASH IDENTIFIER HI_OPTION { add_2vector_operand($1,$3); change_double_operand_type(-3); change_operand_lohi(2);}
+	| IDENTIFIER PLUS INT_OPERAND { recognizer->add_address_operand($1,$3); }
+	| IDENTIFIER LO_OPTION { recognizer->add_scalar_operand( $1 ); recognizer->change_operand_lohi(1);}
+	| MINUS IDENTIFIER LO_OPTION { recognizer->add_scalar_operand( $2 ); recognizer->change_operand_lohi(1); recognizer->change_operand_neg();}
+	| IDENTIFIER HI_OPTION { recognizer->add_scalar_operand( $1 ); recognizer->change_operand_lohi(2);}
+	| MINUS IDENTIFIER HI_OPTION { recognizer->add_scalar_operand( $2 ); recognizer->change_operand_lohi(2); recognizer->change_operand_neg();}
+	| IDENTIFIER PIPE IDENTIFIER { recognizer->add_2vector_operand($1,$3); recognizer->change_double_operand_type(-1);}
+	| IDENTIFIER PIPE IDENTIFIER LO_OPTION { recognizer->add_2vector_operand($1,$3); recognizer->change_double_operand_type(-1); recognizer->change_operand_lohi(1);}
+	| IDENTIFIER PIPE IDENTIFIER HI_OPTION { recognizer->add_2vector_operand($1,$3); recognizer->change_double_operand_type(-1); recognizer->change_operand_lohi(2);}
+	| IDENTIFIER BACKSLASH IDENTIFIER { recognizer->add_2vector_operand($1,$3); recognizer->change_double_operand_type(-3);}
+	| IDENTIFIER BACKSLASH IDENTIFIER LO_OPTION { recognizer->add_2vector_operand($1,$3); recognizer->change_double_operand_type(-3); recognizer->change_operand_lohi(1);}
+	| IDENTIFIER BACKSLASH IDENTIFIER HI_OPTION { recognizer->add_2vector_operand($1,$3); recognizer->change_double_operand_type(-3); recognizer->change_operand_lohi(2);}
 	;
 
-vector_operand: LEFT_BRACE IDENTIFIER COMMA IDENTIFIER RIGHT_BRACE { add_2vector_operand($2,$4); }
-		| LEFT_BRACE IDENTIFIER COMMA IDENTIFIER COMMA IDENTIFIER RIGHT_BRACE { add_3vector_operand($2,$4,$6); }
-		| LEFT_BRACE IDENTIFIER COMMA IDENTIFIER COMMA IDENTIFIER COMMA IDENTIFIER RIGHT_BRACE { add_4vector_operand($2,$4,$6,$8); }
-		| LEFT_BRACE IDENTIFIER COMMA IDENTIFIER COMMA IDENTIFIER COMMA IDENTIFIER COMMA IDENTIFIER COMMA IDENTIFIER COMMA IDENTIFIER COMMA IDENTIFIER RIGHT_BRACE { add_8vector_operand($2,$4,$6,$8,$10,$12,$14,$16); }
-		| LEFT_BRACE IDENTIFIER RIGHT_BRACE { add_1vector_operand($2); }
+vector_operand: LEFT_BRACE IDENTIFIER COMMA IDENTIFIER RIGHT_BRACE { recognizer->add_2vector_operand($2,$4); }
+		| LEFT_BRACE IDENTIFIER COMMA IDENTIFIER COMMA IDENTIFIER RIGHT_BRACE { recognizer->add_3vector_operand($2,$4,$6); }
+		| LEFT_BRACE IDENTIFIER COMMA IDENTIFIER COMMA IDENTIFIER COMMA IDENTIFIER RIGHT_BRACE { recognizer->add_4vector_operand($2,$4,$6,$8); }
+		| LEFT_BRACE IDENTIFIER COMMA IDENTIFIER COMMA IDENTIFIER COMMA IDENTIFIER COMMA IDENTIFIER COMMA IDENTIFIER COMMA IDENTIFIER COMMA IDENTIFIER RIGHT_BRACE { recognizer->add_8vector_operand($2,$4,$6,$8,$10,$12,$14,$16); }
+		| LEFT_BRACE IDENTIFIER RIGHT_BRACE { recognizer->add_1vector_operand($2); }
 	;
 
-tex_operand: LEFT_SQUARE_BRACKET IDENTIFIER COMMA { add_scalar_operand($2); }
+tex_operand: LEFT_SQUARE_BRACKET IDENTIFIER COMMA { recognizer->add_scalar_operand($2); }
 		vector_operand 
 	     RIGHT_SQUARE_BRACKET
 	;
 
-builtin_operand: SPECIAL_REGISTER DIMENSION_MODIFIER { add_builtin_operand($1,$2); }
-        | SPECIAL_REGISTER { add_builtin_operand($1,-1); }
+builtin_operand: SPECIAL_REGISTER DIMENSION_MODIFIER { recognizer->add_builtin_operand($1,$2); }
+        | SPECIAL_REGISTER { recognizer->add_builtin_operand($1,-1); }
 	;
 
-memory_operand : LEFT_SQUARE_BRACKET address_expression RIGHT_SQUARE_BRACKET { add_memory_operand(); }
-	| IDENTIFIER LEFT_SQUARE_BRACKET address_expression RIGHT_SQUARE_BRACKET { add_memory_operand(); change_memory_addr_space($1); }
-	| IDENTIFIER LEFT_SQUARE_BRACKET literal_operand RIGHT_SQUARE_BRACKET { change_memory_addr_space($1); }
-	| IDENTIFIER LEFT_SQUARE_BRACKET twin_operand RIGHT_SQUARE_BRACKET { change_memory_addr_space($1); add_memory_operand();}
-        | MINUS memory_operand { change_operand_neg(); }
+memory_operand : LEFT_SQUARE_BRACKET address_expression RIGHT_SQUARE_BRACKET { recognizer->add_memory_operand(); }
+	| IDENTIFIER LEFT_SQUARE_BRACKET address_expression RIGHT_SQUARE_BRACKET { recognizer->add_memory_operand(); recognizer->change_memory_addr_space($1); }
+	| IDENTIFIER LEFT_SQUARE_BRACKET literal_operand RIGHT_SQUARE_BRACKET { recognizer->change_memory_addr_space($1); }
+	| IDENTIFIER LEFT_SQUARE_BRACKET twin_operand RIGHT_SQUARE_BRACKET { recognizer->change_memory_addr_space($1); recognizer->add_memory_operand();}
+        | MINUS memory_operand { recognizer->change_operand_neg(); }
 	;
 
-twin_operand : IDENTIFIER PLUS IDENTIFIER { add_double_operand($1,$3); change_double_operand_type(1); }
-	| IDENTIFIER PLUS IDENTIFIER LO_OPTION { add_double_operand($1,$3); change_double_operand_type(1); change_operand_lohi(1); }
-	| IDENTIFIER PLUS IDENTIFIER HI_OPTION { add_double_operand($1,$3); change_double_operand_type(1); change_operand_lohi(2); }
-	| IDENTIFIER PLUS EQUALS IDENTIFIER  { add_double_operand($1,$4); change_double_operand_type(2); }
-	| IDENTIFIER PLUS EQUALS IDENTIFIER LO_OPTION { add_double_operand($1,$4); change_double_operand_type(2); change_operand_lohi(1); }
-	| IDENTIFIER PLUS EQUALS IDENTIFIER HI_OPTION { add_double_operand($1,$4); change_double_operand_type(2); change_operand_lohi(2); }
-	| IDENTIFIER PLUS EQUALS INT_OPERAND  { add_address_operand($1,$4); change_double_operand_type(3); }
+twin_operand : IDENTIFIER PLUS IDENTIFIER { recognizer->add_double_operand($1,$3); recognizer->change_double_operand_type(1); }
+	| IDENTIFIER PLUS IDENTIFIER LO_OPTION { recognizer->add_double_operand($1,$3); recognizer->change_double_operand_type(1); recognizer->change_operand_lohi(1); }
+	| IDENTIFIER PLUS IDENTIFIER HI_OPTION { recognizer->add_double_operand($1,$3); recognizer->change_double_operand_type(1); recognizer->change_operand_lohi(2); }
+	| IDENTIFIER PLUS EQUALS IDENTIFIER  { recognizer->add_double_operand($1,$4); recognizer->change_double_operand_type(2); }
+	| IDENTIFIER PLUS EQUALS IDENTIFIER LO_OPTION { recognizer->add_double_operand($1,$4); recognizer->change_double_operand_type(2); recognizer->change_operand_lohi(1); }
+	| IDENTIFIER PLUS EQUALS IDENTIFIER HI_OPTION { recognizer->add_double_operand($1,$4); recognizer->change_double_operand_type(2); recognizer->change_operand_lohi(2); }
+	| IDENTIFIER PLUS EQUALS INT_OPERAND  { recognizer->add_address_operand($1,$4); recognizer->change_double_operand_type(3); }
 	;
 
-literal_operand : INT_OPERAND { add_literal_int($1); }
-	| FLOAT_OPERAND { add_literal_float($1); }
-	| DOUBLE_OPERAND { add_literal_double($1); }
+literal_operand : INT_OPERAND { recognizer->add_literal_int($1); }
+	| FLOAT_OPERAND { recognizer->add_literal_float($1); }
+	| DOUBLE_OPERAND { recognizer->add_literal_double($1); }
 	;
 
-address_expression: IDENTIFIER { add_address_operand($1,0); }
-	| IDENTIFIER LO_OPTION { add_address_operand($1,0); change_operand_lohi(1);}
-	| IDENTIFIER HI_OPTION { add_address_operand($1,0); change_operand_lohi(2); }
-	| IDENTIFIER PLUS INT_OPERAND { add_address_operand($1,$3); }
-	| INT_OPERAND { add_address_operand2($1); }
+address_expression: IDENTIFIER { recognizer->add_address_operand($1,0); }
+	| IDENTIFIER LO_OPTION { recognizer->add_address_operand($1,0); recognizer->change_operand_lohi(1);}
+	| IDENTIFIER HI_OPTION { recognizer->add_address_operand($1,0); recognizer->change_operand_lohi(2); }
+	| IDENTIFIER PLUS INT_OPERAND { recognizer->add_address_operand($1,$3); }
+	| INT_OPERAND { recognizer->add_address_operand2($1); }
 	;
 
 %%
 
-extern int ptx_lineno;
-extern const char *g_filename;
-
-void syntax_not_implemented()
+void syntax_not_implemented(yyscan_t yyscanner, ptx_recognizer* recognizer)
 {
-	printf("Parse error (%s:%u): this syntax is not (yet) implemented:\n",g_filename,ptx_lineno);
-	ptx_error(NULL);
+	printf("Parse error (%s): this syntax is not (yet) implemented:\n", recognizer->gpgpu_ctx->g_filename);
+	ptx_error(yyscanner, recognizer, NULL);
 	abort();
 }
diff --git a/src/cuda-sim/ptx_ir.cc b/src/cuda-sim/ptx_ir.cc
index e4e0c09..6978cc1 100644
--- a/src/cuda-sim/ptx_ir.cc
+++ b/src/cuda-sim/ptx_ir.cc
@@ -28,6 +28,7 @@
 
 #include "ptx_parser.h"
 #include "ptx_ir.h"
+typedef void * yyscan_t;
 #include "ptx.tab.h"
 #include "opcodes.h"
 #include <stdio.h>
@@ -38,14 +39,21 @@
 #include "assert.h"
 
 #include "cuda-sim.h"
+#include "../../libcuda/gpgpu_context.h"
 
 #define STR_SIZE 1024
 
-unsigned symbol::sm_next_uid = 1;
+const ptx_instruction* gpgpu_context::pc_to_instruction(unsigned pc) 
+{
+    if( pc < s_g_pc_to_insn.size() )
+	return s_g_pc_to_insn[pc];
+    else
+	return NULL;
+}
 
 unsigned symbol::get_uid()
 {
-   unsigned result = sm_next_uid++;
+   unsigned result = (gpgpu_ctx->symbol_sm_next_uid)++;
    return result;
 }
 
@@ -82,8 +90,9 @@ symbol_table::symbol_table()
    assert(0); 
 }
 
-symbol_table::symbol_table( const char *scope_name, unsigned entry_point, symbol_table *parent )
+symbol_table::symbol_table( const char *scope_name, unsigned entry_point, symbol_table *parent, gpgpu_context* ctx )
 {
+   gpgpu_ctx = ctx;
    m_scope_name = std::string(scope_name);
    m_reg_allocator=0;
    m_shared_next = 0;
@@ -149,7 +158,7 @@ symbol *symbol_table::add_variable( const char *identifier, const type_info *typ
    std::string key(identifier);
    assert( m_symbols.find(key) == m_symbols.end() );
    snprintf(buf,1024,"%s:%u",filename,line);
-   symbol *s = new symbol(identifier,type,buf,size);
+   symbol *s = new symbol(identifier,type,buf,size,gpgpu_ctx);
    m_symbols[ key ] = s;
 
    if ( type != NULL && type->get_key().is_global()  ) {
@@ -170,7 +179,7 @@ void symbol_table::add_function( function_info *func, const char *filename, unsi
    char buf[1024];
    snprintf(buf,1024,"%s:%u",filename,linenumber);
    type_info *type = add_type( func );
-   symbol *s = new symbol(func->get_name().c_str(),type,buf,0);
+   symbol *s = new symbol(func->get_name().c_str(),type,buf,0,gpgpu_ctx);
    s->set_function(func);
    m_symbols[ func->get_name() ] = s;
 }
@@ -182,7 +191,7 @@ symbol_table* symbol_table::start_inst_group() {
 
    //previous added
    assert(m_inst_group_symtab.find(std::string(inst_group_name)) == m_inst_group_symtab.end());
-   symbol_table *sym_table = new symbol_table(inst_group_name, 3/*inst group*/, this );
+   symbol_table *sym_table = new symbol_table(inst_group_name, 3/*inst group*/, this, gpgpu_ctx );
  
    sym_table->m_global_next = m_global_next;
    sym_table->m_shared_next = m_shared_next;
@@ -220,7 +229,7 @@ bool symbol_table::add_function_decl( const char *name, int entry_point, functio
       *func_info = m_function_info_lookup[key];
       prior_decl = true;
    } else {
-      *func_info = new function_info(entry_point);
+      *func_info = new function_info(entry_point, gpgpu_ctx);
       (*func_info)->set_name(name);
       (*func_info)->set_maxnt_id(0);
       m_function_info_lookup[key] = *func_info;
@@ -231,7 +240,7 @@ bool symbol_table::add_function_decl( const char *name, int entry_point, functio
       *sym_table = m_function_symtab_lookup[key];
    } else {
       assert( !prior_decl );
-      *sym_table = new symbol_table( "", entry_point, this );
+      *sym_table = new symbol_table( "", entry_point, this, gpgpu_ctx );
       
       // Initial setup code to support a register represented as "_".
       // This register is used when an instruction operand is
@@ -320,11 +329,9 @@ void symbol_table::dump()
    printf("\n");
 }
 
-unsigned operand_info::sm_next_uid=1;
-
 unsigned operand_info::get_uid()
 {
-   unsigned result = sm_next_uid++;
+   unsigned result = (gpgpu_ctx->operand_info_sm_next_uid)++;
    return result;
 }
 
@@ -1013,7 +1020,7 @@ void copy_buffer_to_frame(ptx_thread_info * thread, const arg_buffer_t &a)
 {
    if( a.is_reg() ) {
       ptx_reg_t value = a.get_reg();
-      operand_info dst_reg = operand_info(a.get_dst()); 
+      operand_info dst_reg = operand_info(a.get_dst(), thread->get_gpu()->gpgpu_ctx); 
       thread->set_reg(dst_reg.get_symbol(),value);
    } else {  
       const void *buffer = a.get_param_buffer();
@@ -1037,7 +1044,8 @@ void copy_buffer_list_into_frame(ptx_thread_info * thread, arg_buffer_list_t &ar
 
 static std::list<operand_info> check_operands( int opcode,
                                         const std::list<int> &scalar_type,
-                                        const std::list<operand_info> &operands )
+                                        const std::list<operand_info> &operands,
+					gpgpu_context* ctx)
 {
    static int g_warn_literal_operands_two_type_inst;
     if( (opcode == CVT_OP) || (opcode == SET_OP) || (opcode == SLCT_OP) || (opcode == TEX_OP) || (opcode==MMA_OP) || (opcode == DP4A_OP)) {
@@ -1064,7 +1072,7 @@ static std::list<operand_info> check_operands( int opcode,
                     if( (op.get_type() == double_op_t) && (inst_type == F32_TYPE) ) {
                         ptx_reg_t v = op.get_literal_value();
                         float u = (float)v.f64;
-                        operand_info n(u);
+                        operand_info n(u, ctx);
                         result.push_back(n);
                     } else {
                         result.push_back(op);
@@ -1094,16 +1102,18 @@ ptx_instruction::ptx_instruction( int opcode,
                                   const char *file, 
                                   unsigned line,
                                   const char *source,
-                                  const core_config *config ) : warp_inst_t(config)
+                                  const core_config *config,
+				  gpgpu_context* ctx ) : warp_inst_t(config), m_return_var(ctx)
 {
-   m_uid = ++g_num_ptx_inst_uid;
+   gpgpu_ctx = ctx;
+   m_uid = ++(ctx->g_num_ptx_inst_uid);
    m_PC = 0;
    m_opcode = opcode;
    m_pred = pred;
    m_neg_pred = neg_pred;
    m_pred_mod = pred_mod;
    m_label = label;
-   const std::list<operand_info> checked_operands = check_operands(opcode,scalar_type,operands);
+   const std::list<operand_info> checked_operands = check_operands(opcode,scalar_type,operands, ctx);
    m_operands.insert(m_operands.begin(), checked_operands.begin(), checked_operands.end() );
    m_return_var = return_var;
    m_options = options;
@@ -1369,12 +1379,16 @@ std::string ptx_instruction::to_string() const
                            m_source.c_str() );
    return std::string( buf );
 }
+operand_info ptx_instruction::get_pred() const
+{
+    return operand_info( m_pred, gpgpu_ctx);
+}
 
-unsigned function_info::sm_next_uid = 1;
 
-function_info::function_info(int entry_point ) 
+function_info::function_info(int entry_point, gpgpu_context* ctx )
 {
-   m_uid = sm_next_uid++;
+   gpgpu_ctx = ctx;
+   m_uid = (gpgpu_ctx->function_info_sm_next_uid)++;
    m_entry_point = (entry_point==1)?true:false;
    m_extern = (entry_point==2)?true:false;
    num_reconvergence_pairs = 0;
diff --git a/src/cuda-sim/ptx_ir.h b/src/cuda-sim/ptx_ir.h
index 1af85de..f4c5c37 100644
--- a/src/cuda-sim/ptx_ir.h
+++ b/src/cuda-sim/ptx_ir.h
@@ -43,6 +43,8 @@
 
 #include "memory.h"
 
+class gpgpu_context;
+
 class type_info_key {
 public:
    type_info_key()
@@ -150,8 +152,9 @@ class operand_info;
 
 class symbol {
 public:
-   symbol( const char *name, const type_info *type, const char *location, unsigned size ) 
+   symbol( const char *name, const type_info *type, const char *location, unsigned size, gpgpu_context* ctx ) 
    {
+      gpgpu_ctx = ctx;
       m_uid = get_uid();
       m_name = name;
       m_decl_location = location;
@@ -271,6 +274,7 @@ public:
    unsigned uid() const { return m_uid; }
 
 private:
+   gpgpu_context* gpgpu_ctx;
    unsigned get_uid();
    unsigned m_uid;
    const type_info *m_type;
@@ -297,14 +301,12 @@ private:
    bool m_reg_num_valid; 
 
    std::list<operand_info> m_initializer;
-   static unsigned sm_next_uid;
-   
 };
 
 class symbol_table {
 public:
    symbol_table();
-   symbol_table( const char *scope_name, unsigned entry_point, symbol_table *parent );
+   symbol_table( const char *scope_name, unsigned entry_point, symbol_table *parent, gpgpu_context* ctx);
    void set_name( const char *name );
    const ptx_version &get_ptx_version() const;
    unsigned get_sm_target() const;
@@ -346,6 +348,9 @@ public:
    symbol_table* start_inst_group();
    symbol_table* end_inst_group();
 
+   // backward pointer
+   class gpgpu_context* gpgpu_ctx;
+
 private:
    unsigned m_reg_allocator;
    unsigned m_shared_next;
@@ -372,9 +377,9 @@ private:
 
 class operand_info {
 public:
-   operand_info()
+   operand_info(gpgpu_context* ctx)
    {
-      init();
+      init(ctx);
       m_is_non_arch_reg = false;
       m_addr_space = undefined_space;
       m_operand_lohi = 0;
@@ -387,9 +392,9 @@ public:
       m_addr_offset = 0;
       m_value.m_symbolic=NULL;
    }
-   operand_info( const symbol *addr )
+   operand_info( const symbol *addr, gpgpu_context* ctx )
    {
-      init();
+      init(ctx);
       m_is_non_arch_reg = false;
       m_addr_space = undefined_space;
       m_operand_lohi = 0;
@@ -430,9 +435,9 @@ public:
       m_is_return_var = false;
       m_immediate_address=false;
    }
-   operand_info( const symbol *addr1, const symbol *addr2 )
+   operand_info( const symbol *addr1, const symbol *addr2, gpgpu_context* ctx )
    {
-      init();
+      init(ctx);
       m_is_non_arch_reg = false;
       m_addr_space = undefined_space;
       m_operand_lohi = 0;
@@ -457,9 +462,9 @@ public:
       m_is_return_var = false;
       m_immediate_address=false;
    }
-   operand_info( int builtin_id, int dim_mod )
+   operand_info( int builtin_id, int dim_mod, gpgpu_context* ctx )
    {
-      init();
+      init(ctx);
       m_is_non_arch_reg = false;
       m_addr_space = undefined_space;
       m_operand_lohi = 0;
@@ -476,9 +481,9 @@ public:
       m_is_return_var = false;
       m_immediate_address=false;
    }
-   operand_info( const symbol *addr, int offset )
+   operand_info( const symbol *addr, int offset, gpgpu_context* ctx )
    {
-      init();
+      init(ctx);
       m_is_non_arch_reg = false;
       m_addr_space = undefined_space;
       m_operand_lohi = 0;
@@ -495,9 +500,9 @@ public:
       m_is_return_var = false;
       m_immediate_address=false;
    }
-   operand_info( unsigned x )
+   operand_info( unsigned x, gpgpu_context* ctx )
    {
-      init();
+      init(ctx);
       m_is_non_arch_reg = false;
       m_addr_space = undefined_space;
       m_operand_lohi = 0;
@@ -514,9 +519,9 @@ public:
       m_is_return_var = false;
       m_immediate_address=true;
    }
-   operand_info( int x )
+   operand_info( int x, gpgpu_context* ctx )
    {
-      init();
+      init(ctx);
       m_is_non_arch_reg = false;
       m_addr_space = undefined_space;
       m_operand_lohi = 0;
@@ -533,9 +538,9 @@ public:
       m_is_return_var = false;
       m_immediate_address=false;
    }
-   operand_info( float x )
+   operand_info( float x, gpgpu_context* ctx )
    {
-      init();
+      init(ctx);
       m_is_non_arch_reg = false;
       m_addr_space = undefined_space;
       m_operand_lohi = 0;
@@ -552,9 +557,9 @@ public:
       m_is_return_var = false;
       m_immediate_address=false;
    }
-   operand_info( double x )
+   operand_info( double x, gpgpu_context* ctx )
    {
-      init();
+      init(ctx);
       m_is_non_arch_reg = false;
       m_addr_space = undefined_space;
       m_operand_lohi = 0;
@@ -571,9 +576,9 @@ public:
       m_is_return_var = false;
       m_immediate_address=false;
    }
-   operand_info( const symbol *s1, const symbol *s2, const symbol *s3, const symbol *s4 )
+   operand_info( const symbol *s1, const symbol *s2, const symbol *s3, const symbol *s4, gpgpu_context* ctx )
    {
-      init();
+      init(ctx);
       m_is_non_arch_reg = false;
       m_addr_space = undefined_space;
       m_operand_lohi = 0;
@@ -598,9 +603,9 @@ public:
       m_is_return_var = false;
       m_immediate_address=false;
    }
-   operand_info( const symbol *s1, const symbol *s2, const symbol *s3, const symbol *s4 ,const symbol *s5,const symbol *s6,const symbol *s7, const symbol *s8)
+   operand_info( const symbol *s1, const symbol *s2, const symbol *s3, const symbol *s4 ,const symbol *s5,const symbol *s6,const symbol *s7, const symbol *s8, gpgpu_context* ctx)
    {
-      init();
+      init(ctx);
       m_is_non_arch_reg = false;
       m_addr_space = undefined_space;
       m_operand_lohi = 0;
@@ -626,8 +631,9 @@ public:
       m_immediate_address=false;
    }
 
-   void init()
+   void init(gpgpu_context* ctx)
    {
+       gpgpu_ctx = ctx;
        m_uid=(unsigned)-1;
        m_valid=false;
        m_vector=false;
@@ -837,6 +843,7 @@ public:
    bool is_non_arch_reg() const { return m_is_non_arch_reg; }
 
 private:
+   gpgpu_context* gpgpu_ctx;
    unsigned m_uid;
    bool m_valid;
    bool m_vector;
@@ -866,12 +873,10 @@ private:
    bool m_is_return_var;
    bool m_is_non_arch_reg;
 
-   static unsigned sm_next_uid;
    unsigned get_uid();
 };
 
 extern const char *g_opcode_string[];
-extern unsigned g_num_ptx_inst_uid;
 struct basic_block_t {
    basic_block_t( unsigned ID, ptx_instruction *begin, ptx_instruction *end, bool entry, bool ex)
    {
@@ -931,7 +936,8 @@ public:
                     const char *file, 
                     unsigned line,
                     const char *source,
-                    const core_config *config );
+                    const core_config *config,
+		    gpgpu_context* ctx);
 
    void print_insn() const;
    virtual void print_insn( FILE *fp ) const;
@@ -951,7 +957,7 @@ public:
    unsigned source_line() const { return m_source_line;}
    unsigned get_num_operands() const { return m_operands.size();}
    bool has_pred() const { return m_pred != NULL;}
-   operand_info get_pred() const { return operand_info( m_pred );}
+   operand_info get_pred() const;
    bool get_pred_neg() const { return m_neg_pred;}
    int get_pred_mod() const { return m_pred_mod;}
    const char *get_source() const { return m_source.c_str();}
@@ -1186,7 +1192,8 @@ private:
 
    virtual void pre_decode();
    friend class function_info;
-   static unsigned g_num_ptx_inst_uid;
+   // backward pointer
+   class gpgpu_context* gpgpu_ctx;
 };
 
 class param_info {
@@ -1228,7 +1235,7 @@ private:
 
 class function_info {
 public:
-   function_info(int entry_point );
+   function_info(int entry_point, gpgpu_context* ctx );
    const ptx_version &get_ptx_version() const { return m_symtab->get_ptx_version(); }
    unsigned get_sm_target() const { return m_symtab->get_sm_target(); }
    bool is_extern() const { return m_extern; }
@@ -1365,13 +1372,6 @@ public:
       return m_symtab;
    }
 
-   static const ptx_instruction* pc_to_instruction(unsigned pc) 
-   {
-      if( pc < s_g_pc_to_insn.size() )
-          return s_g_pc_to_insn[pc];
-      else
-          return NULL;
-   }
    unsigned local_mem_framesize() const 
    { 
       return m_local_mem_framesize; 
@@ -1398,6 +1398,8 @@ public:
 
    void set_maxnt_id(unsigned maxthreads) { maxnt_id = maxthreads;}
    unsigned get_maxnt_id() { return maxnt_id;}
+   // backward pointer
+   class gpgpu_context* gpgpu_ctx;
 
 private:
    unsigned maxnt_id;
@@ -1427,9 +1429,6 @@ private:
 
    symbol_table *m_symtab;
 
-   static std::vector<ptx_instruction*> s_g_pc_to_insn; // a direct mapping from PC to instruction
-   static unsigned sm_next_uid;
-
    //parameter size for device kernels
    int m_args_aligned_size;
    
@@ -1438,14 +1437,14 @@ private:
 
 class arg_buffer_t {
 public:
-   arg_buffer_t()
+   arg_buffer_t(gpgpu_context* ctx) : m_src_op(ctx)
    {
       m_is_reg=false;
       m_is_param=false;
       m_param_value=NULL;
       m_reg_value=ptx_reg_t();
    }
-   arg_buffer_t( const arg_buffer_t &another )
+   arg_buffer_t( const arg_buffer_t &another, gpgpu_context* ctx ) : m_src_op(ctx)
    {
       make_copy(another);
    }
@@ -1575,11 +1574,8 @@ struct textureInfo {
 extern std::map<std::string,symbol_table*> g_sym_name_to_symbol_table;
 
 
-extern bool g_keep_intermediate_files;
-
 void gpgpu_ptx_assemble( std::string kname, void *kinfo );
 #include "../option_parser.h"
-void ptx_reg_options(option_parser_t opp);
 unsigned ptx_kernel_shmem_size( void *kernel_impl );
 unsigned ptx_kernel_nregs( void *kernel_impl );
 
diff --git a/src/cuda-sim/ptx_loader.cc b/src/cuda-sim/ptx_loader.cc
index 8c6f361..dca3cec 100644
--- a/src/cuda-sim/ptx_loader.cc
+++ b/src/cuda-sim/ptx_loader.cc
@@ -33,44 +33,40 @@
 #include <dirent.h>
 #include <fstream>
 #include <sstream>
-
-/// globals
-
-memory_space *g_global_mem;
-memory_space *g_tex_mem;
-memory_space *g_surf_mem;
-memory_space *g_param_mem;
-bool g_override_embedded_ptx = false;
+#include "../../libcuda/gpgpu_context.h"
 
 /// extern prototypes
 
-extern int ptx_parse();
-extern int ptx__scan_string(const char*);
+extern int ptx_error( yyscan_t yyscanner, const char *s );
+extern int ptx_lex_init(yyscan_t* scanner);
+extern void ptx_set_in(FILE * _in_str ,yyscan_t yyscanner );
+extern int ptx_parse(yyscan_t scanner, ptx_recognizer* recognizer);
+extern int ptx_lex_destroy(yyscan_t scanner);
+extern int ptx__scan_string(const char*, yyscan_t scanner);
 
 extern std::map<unsigned,const char*> get_duplicate();
 
-const char *g_ptxinfo_filename;
-extern int ptxinfo_parse();
-extern int ptxinfo_debug;
-extern FILE *ptxinfo_in;
+typedef void * yyscan_t;
+extern int ptxinfo_lex_init(yyscan_t* scanner);
+extern void ptxinfo_set_in  (FILE * _in_str ,yyscan_t yyscanner );
+extern int ptxinfo_parse(yyscan_t scanner, ptxinfo_data* ptxinfo);
+extern int ptxinfo_lex_destroy(yyscan_t scanner);
 
 static bool g_save_embedded_ptx;
 static int g_occupancy_sm_number;
-bool g_keep_intermediate_files;
-bool m_ptx_save_converted_ptxplus;
 
-bool keep_intermediate_files() {return g_keep_intermediate_files;}
+bool ptxinfo_data::keep_intermediate_files() {return g_keep_intermediate_files;}
 
-void ptx_reg_options(option_parser_t opp)
+void gpgpu_context::ptx_reg_options(option_parser_t opp)
 {
    option_parser_register(opp, "-save_embedded_ptx", OPT_BOOL, &g_save_embedded_ptx, 
                 "saves ptx files embedded in binary as <n>.ptx",
                 "0");
-   option_parser_register(opp, "-keep", OPT_BOOL, &g_keep_intermediate_files, 
+   option_parser_register(opp, "-keep", OPT_BOOL, &(ptxinfo->g_keep_intermediate_files),
                 "keep intermediate files created by GPGPU-Sim when interfacing with external programs",
                 "0");
    option_parser_register(opp, "-gpgpu_ptx_save_converted_ptxplus", OPT_BOOL,
-                &m_ptx_save_converted_ptxplus,
+                &(ptxinfo->m_ptx_save_converted_ptxplus),
                 "Saved converted ptxplus to a file",
                 "0");
    option_parser_register(opp, "-gpgpu_occupancy_sm_number", OPT_INT32, &g_occupancy_sm_number,
@@ -79,7 +75,7 @@ void ptx_reg_options(option_parser_t opp)
                 "0");
 }
 
-void print_ptx_file( const char *p, unsigned source_num, const char *filename )
+void gpgpu_context::print_ptx_file( const char *p, unsigned source_num, const char *filename )
 {
    printf("\nGPGPU-Sim PTX: file _%u.ptx contents:\n\n", source_num );
    char *s = strdup(p);
@@ -90,7 +86,7 @@ void print_ptx_file( const char *p, unsigned source_num, const char *filename )
       while ( (*u != '\n') && (*u != '\0') ) u++;
       unsigned last = (*u == '\0');
       *u = '\0';
-      const ptx_instruction *pI = ptx_instruction_lookup(filename,n);
+      const ptx_instruction *pI = ptx_parser->ptx_instruction_lookup(filename,n);
       char pc[64];
       if( pI && pI->get_PC() )
          snprintf(pc,64,"%4u", pI->get_PC() );
@@ -105,7 +101,7 @@ void print_ptx_file( const char *p, unsigned source_num, const char *filename )
    fflush(stdout);
 }
 
-char* gpgpu_ptx_sim_convert_ptx_and_sass_to_ptxplus(const std::string ptxfilename, const std::string elffilename, const std::string sassfilename)
+char* ptxinfo_data::gpgpu_ptx_sim_convert_ptx_and_sass_to_ptxplus(const std::string ptxfilename, const std::string elffilename, const std::string sassfilename)
 {
 
 	printf("GPGPU-Sim PTX: converting EMBEDDED .ptx file to ptxplus \n");
@@ -158,7 +154,7 @@ char* gpgpu_ptx_sim_convert_ptx_and_sass_to_ptxplus(const std::string ptxfilenam
 }
 
 
-symbol_table *gpgpu_ptx_sim_load_ptx_from_string( const char *p, unsigned source_num )
+symbol_table *gpgpu_context::gpgpu_ptx_sim_load_ptx_from_string( const char *p, unsigned source_num )
 {
     char buf[1024];
     snprintf(buf,1024,"_%u.ptx", source_num );
@@ -168,8 +164,9 @@ symbol_table *gpgpu_ptx_sim_load_ptx_from_string( const char *p, unsigned source
        fclose(fp);
     }
     symbol_table *symtab=init_parser(buf);
-    ptx__scan_string(p);
-    int errors = ptx_parse ();
+    ptx_lex_init(&(ptx_parser->scanner));
+    ptx__scan_string(p, ptx_parser->scanner);
+    int errors = ptx_parse (ptx_parser->scanner, ptx_parser);
     if ( errors ) {
         char fname[1024];
         snprintf(fname,1024,"_ptx_errors_XXXXXX");
@@ -182,6 +179,7 @@ symbol_table *gpgpu_ptx_sim_load_ptx_from_string( const char *p, unsigned source
         abort();
         exit(40);
     }
+    ptx_lex_destroy(ptx_parser->scanner);
 
     if ( g_debug_execution >= 100 ) 
        print_ptx_file(p,source_num,buf);
@@ -190,7 +188,7 @@ symbol_table *gpgpu_ptx_sim_load_ptx_from_string( const char *p, unsigned source
     return symtab;
 }
 
-symbol_table *gpgpu_ptx_sim_load_ptx_from_filename( const char *filename )
+symbol_table *gpgpu_context::gpgpu_ptx_sim_load_ptx_from_filename( const char *filename )
 {
     symbol_table *symtab=init_parser(filename);
     printf("GPGPU-Sim PTX: finished parsing EMBEDDED .ptx file %s\n",filename);
@@ -327,13 +325,12 @@ char* get_app_binary_name(){
    return self_exe_path;
 }
 
-void gpgpu_ptx_info_load_from_filename( const char *filename, unsigned sm_version)
+void gpgpu_context::gpgpu_ptx_info_load_from_filename( const char *filename, unsigned sm_version)
 {
     std::string ptxas_filename(std::string(filename) + "as");
     char buff[1024], extra_flags[1024];
 	extra_flags[0]=0;
-    extern bool g_cdp_enabled;
-	if(!g_cdp_enabled)
+	if(!device_runtime->g_cdp_enabled)
 	       	snprintf(extra_flags,1024,"--gpu-name=sm_%u",sm_version);
 	else
 	       	snprintf(extra_flags,1024,"--compile-only --gpu-name=sm_%u",sm_version);
@@ -346,13 +343,17 @@ void gpgpu_ptx_info_load_from_filename( const char *filename, unsigned sm_versio
 		exit(1);
 	}
 
-	g_ptxinfo_filename = strdup(ptxas_filename.c_str());
-    ptxinfo_in = fopen(g_ptxinfo_filename,"r");
-    ptxinfo_parse();
+    FILE *ptxinfo_in;
+    ptxinfo->g_ptxinfo_filename = strdup(ptxas_filename.c_str());
+    ptxinfo_in = fopen(ptxinfo->g_ptxinfo_filename,"r");
+    ptxinfo_lex_init(&(ptxinfo->scanner));
+    ptxinfo_set_in(ptxinfo_in, ptxinfo->scanner);
+    ptxinfo_parse(ptxinfo->scanner, ptxinfo);
+    ptxinfo_lex_destroy(ptxinfo->scanner);
     fclose(ptxinfo_in);
 }
 
-void gpgpu_ptxinfo_load_from_string( const char *p_for_info, unsigned source_num, unsigned sm_version )
+void gpgpu_context::gpgpu_ptxinfo_load_from_string( const char *p_for_info, unsigned source_num, unsigned sm_version, int no_of_ptx )
 {
     //do ptxas for individual files instead of one big embedded ptx. This prevents the duplicate defs and declarations.
     char ptx_file[1000];
@@ -396,8 +397,7 @@ void gpgpu_ptxinfo_load_from_string( const char *p_for_info, unsigned source_num
                          "A register size/SM mismatch may result in occupancy differences." );
         exit(1);
     }
-    extern bool g_cdp_enabled;
-    if(!g_cdp_enabled)
+    if(!device_runtime->g_cdp_enabled)
         snprintf(extra_flags,1024,"--gpu-name=sm_%u", g_occupancy_sm_number);
     else
         snprintf(extra_flags,1024,"--compile-only --gpu-name=sm_%u",g_occupancy_sm_number);
@@ -410,9 +410,14 @@ void gpgpu_ptxinfo_load_from_string( const char *p_for_info, unsigned source_num
     if( result != 0 ) {
     	// 65280 = duplicate errors
     	if (result == 65280) {
+		FILE *ptxinfo_in;
     		ptxinfo_in = fopen(tempfile_ptxinfo,"r");
-		g_ptxinfo_filename = tempfile_ptxinfo;
-		ptxinfo_parse();
+		ptxinfo->g_ptxinfo_filename = tempfile_ptxinfo;
+		ptxinfo_lex_init(&(ptxinfo->scanner));
+		ptxinfo_set_in(ptxinfo_in, ptxinfo->scanner);
+		ptxinfo_parse(ptxinfo->scanner, ptxinfo);
+		ptxinfo_lex_destroy(ptxinfo->scanner);
+		fclose(ptxinfo_in);
 
     		fix_duplicate_errors(fname2);
     		snprintf(commandline,1024,"$CUDA_INSTALL_PATH/bin/ptxas %s -v %s --output-file  /dev/null 2> %s",
@@ -460,8 +465,7 @@ void gpgpu_ptxinfo_load_from_string( const char *p_for_info, unsigned source_num
 
 	#if CUDART_VERSION >= 3000
 	if (sm_version == 0) sm_version = 20;
-    	extern bool g_cdp_enabled;
-	if(!g_cdp_enabled)
+	if(!device_runtime->g_cdp_enabled)
 	       	snprintf(extra_flags,1024,"--gpu-name=sm_%u",sm_version);
 	else
 	       	snprintf(extra_flags,1024,"--compile-only --gpu-name=sm_%u",sm_version);
@@ -492,12 +496,17 @@ void gpgpu_ptxinfo_load_from_string( const char *p_for_info, unsigned source_num
     }	
 
     if(no_of_ptx>0)
-        g_ptxinfo_filename = final_tempfile_ptxinfo;
+        ptxinfo->g_ptxinfo_filename = final_tempfile_ptxinfo;
     else
-	g_ptxinfo_filename = tempfile_ptxinfo;
-    ptxinfo_in = fopen(g_ptxinfo_filename,"r");
+	ptxinfo->g_ptxinfo_filename = tempfile_ptxinfo;
+    FILE *ptxinfo_in;
+    ptxinfo_in = fopen(ptxinfo->g_ptxinfo_filename,"r");
 
-    ptxinfo_parse();
+    ptxinfo_lex_init(&(ptxinfo->scanner));
+    ptxinfo_set_in(ptxinfo_in, ptxinfo->scanner);
+    ptxinfo_parse(ptxinfo->scanner, ptxinfo);
+    ptxinfo_lex_destroy(ptxinfo->scanner);
+    fclose(ptxinfo_in);
 
     snprintf(commandline,1024,"rm -f *info");
     if( system(commandline) != 0 ) {
@@ -515,4 +524,4 @@ void gpgpu_ptxinfo_load_from_string( const char *p_for_info, unsigned source_num
     	    exit(1);
         }
     }
-}
\ No newline at end of file
+}
diff --git a/src/cuda-sim/ptx_loader.h b/src/cuda-sim/ptx_loader.h
index e5df6a9..d8f1cbc 100644
--- a/src/cuda-sim/ptx_loader.h
+++ b/src/cuda-sim/ptx_loader.h
@@ -29,14 +29,24 @@
 #define PTX_LOADER_H_INCLUDED
 #include <string>
 
-extern bool g_override_embedded_ptx;
-extern int no_of_ptx; //counter to track number of ptx files to be extracted in an application.
- 
-class symbol_table *gpgpu_ptx_sim_load_ptx_from_string( const char *p, unsigned source_num );
-class symbol_table *gpgpu_ptx_sim_load_ptx_from_filename( const char *filename );
-void gpgpu_ptxinfo_load_from_string( const char *p_for_info, unsigned source_num, unsigned sm_version=20 );
-void gpgpu_ptx_info_load_from_filename( const char *filename, unsigned sm_version );
-char* gpgpu_ptx_sim_convert_ptx_and_sass_to_ptxplus(const std::string ptx_str, const std::string sass_str, const std::string elf_str);
-bool keep_intermediate_files();
+#define PTXINFO_LINEBUF_SIZE 1024
+class gpgpu_context;
+typedef void * yyscan_t;
+class ptxinfo_data{
+    public:
+	ptxinfo_data(gpgpu_context* ctx) {
+	    gpgpu_ctx = ctx;
+	}
+	yyscan_t scanner;
+	char linebuf[PTXINFO_LINEBUF_SIZE];
+	unsigned col;
+	const char *g_ptxinfo_filename;
+	class gpgpu_context* gpgpu_ctx;
+	bool g_keep_intermediate_files;
+	bool m_ptx_save_converted_ptxplus;
+	void ptxinfo_addinfo();
+	bool keep_intermediate_files();
+	char* gpgpu_ptx_sim_convert_ptx_and_sass_to_ptxplus(const std::string ptx_str, const std::string sass_str, const std::string elf_str);
+};
 
 #endif
diff --git a/src/cuda-sim/ptx_parser.cc b/src/cuda-sim/ptx_parser.cc
index 25758dd..81b70af 100644
--- a/src/cuda-sim/ptx_parser.cc
+++ b/src/cuda-sim/ptx_parser.cc
@@ -27,79 +27,46 @@
 
 #include "ptx_parser.h"
 #include "ptx_ir.h"
+#include "../../libcuda/gpgpu_context.h"
+
+typedef void * yyscan_t;
 #include "ptx.tab.h"
 #include <stdarg.h>
 
-extern int ptx_error( const char *s );
-extern int ptx_lineno;
-extern int ptx_parse();
-extern FILE *ptx_in;
+extern int ptx_get_lineno (yyscan_t yyscanner );
+extern YYSTYPE* ptx_get_lval (yyscan_t yyscanner );
+extern int ptx_error( yyscan_t yyscanner, const char *s );
+extern int ptx_lex_init(yyscan_t* scanner);
+extern void ptx_set_in(FILE * _in_str ,yyscan_t yyscanner );
+extern FILE *ptx_get_in (yyscan_t yyscanner );
+extern int ptx_parse(yyscan_t scanner, ptx_recognizer* recognizer);
+extern int ptx_lex_destroy(yyscan_t scanner);
 
-static const struct core_config *g_shader_core_config;
-void set_ptx_warp_size(const struct core_config * warp_size)
+void ptx_recognizer::set_ptx_warp_size(const struct core_config * warp_size)
 {
    g_shader_core_config=warp_size;
 }
 
-static bool g_debug_ir_generation=false;
-const char *g_filename;
-unsigned g_max_regs_per_thread = 0;
-
-// the program intermediate representation...
-static symbol_table *g_global_allfiles_symbol_table = NULL;
-static symbol_table *g_global_symbol_table = NULL;
-std::map<std::string,symbol_table*> g_sym_name_to_symbol_table;
-static symbol_table *g_current_symbol_table = NULL;
-static std::list<ptx_instruction*> g_instructions;
-static symbol *g_last_symbol = NULL;
-
-int g_error_detected = 0;
-
-// type specifier stuff:
-memory_space_t g_space_spec = undefined_space;
-memory_space_t g_ptr_spec = undefined_space;
-int g_scalar_type_spec = -1;
-int g_vector_spec = -1;
-int g_alignment_spec = -1;
-int g_size = -1;
-int g_extern_spec = 0;
-
-// variable declaration stuff:
-type_info *g_var_type = NULL;
-
-// instruction definition stuff:
-const symbol *g_pred;
-int g_neg_pred;
-int g_pred_mod;
-symbol *g_label;
-int g_opcode = -1;
-std::list<operand_info> g_operands;
-std::list<int> g_options;
-std::list<int> g_wmma_options;
-std::list<int> g_scalar_type;
 
 #define PTX_PARSE_DPRINTF(...) \
    if( g_debug_ir_generation ) { \
-      printf(" %s:%u => ",g_filename,ptx_lineno); \
+      printf(" %s:%u => ",gpgpu_ctx->g_filename,ptx_get_lineno(scanner)); \
       printf("   (%s:%u) ", __FILE__, __LINE__); \
       printf(__VA_ARGS__); \
       printf("\n"); \
       fflush(stdout); \
    }
 
-static unsigned g_entry_func_param_index=0;
-static function_info *g_func_info = NULL;
 static std::map<unsigned,std::string> g_ptx_token_decode;
-static operand_info g_return_var;
 
 const char *decode_token( int type )
 {
    return g_ptx_token_decode[type].c_str();
 }
 
-void read_parser_environment_variables() 
+void ptx_recognizer::read_parser_environment_variables() 
 {
-   g_filename = getenv("PTX_SIM_KERNELFILE"); 
+   gpgpu_ctx->g_filename = getenv("PTX_SIM_KERNELFILE");
    char *dbg_level = getenv("PTX_SIM_DEBUG");
    if ( dbg_level && strlen(dbg_level) ) {
       int debug_execution=0;
@@ -109,7 +76,7 @@ void read_parser_environment_variables()
    }
 }
 
-void init_directive_state()
+void ptx_recognizer::init_directive_state()
 {
    PTX_PARSE_DPRINTF("init_directive_state");
    g_space_spec=undefined_space;
@@ -125,7 +92,7 @@ void init_directive_state()
    g_last_symbol = NULL;
 }
 
-void init_instruction_state()
+void ptx_recognizer::init_instruction_state()
 {
    PTX_PARSE_DPRINTF("init_instruction_state");
    g_pred = NULL;
@@ -135,21 +102,20 @@ void init_instruction_state()
    g_opcode = -1;
    g_options.clear();
    g_wmma_options.clear();
-   g_return_var = operand_info();
+   g_return_var = operand_info(gpgpu_ctx);
    init_directive_state();
 }
 
-symbol_table *init_parser( const char *ptx_filename )
+symbol_table * gpgpu_context::init_parser( const char *ptx_filename )
 {
    g_filename = strdup(ptx_filename);
    if  (g_global_allfiles_symbol_table == NULL) {
-       g_global_allfiles_symbol_table = new symbol_table("global_allfiles", 0, NULL);
-       g_global_symbol_table = g_current_symbol_table = g_global_allfiles_symbol_table;
+       g_global_allfiles_symbol_table = new symbol_table("global_allfiles", 0, NULL, this);
+       ptx_parser->g_global_symbol_table = ptx_parser->g_current_symbol_table = g_global_allfiles_symbol_table;
    }
    /*else {
        g_global_symbol_table = g_current_symbol_table = new symbol_table("global",0,g_global_allfiles_symbol_table);
    }*/
-   ptx_lineno = 1;
 
 #define DEF(X,Y) g_ptx_token_decode[X] = Y;
 #include "ptx_parser_decode.def"
@@ -169,18 +135,22 @@ symbol_table *init_parser( const char *ptx_filename )
    g_ptx_token_decode[generic_space] = "generic_space";
    g_ptx_token_decode[instruction_space] = "instruction_space";
 
-   init_directive_state();
-   init_instruction_state();
+   ptx_lex_init(&(ptx_parser->scanner));
+   ptx_parser->init_directive_state();
+   ptx_parser->init_instruction_state();
 
+   FILE *ptx_in;
    ptx_in = fopen(ptx_filename, "r");
-   ptx_parse();
+   ptx_set_in(ptx_in, ptx_parser->scanner);
+   ptx_parse(ptx_parser->scanner, ptx_parser);
+   ptx_in = ptx_get_in(ptx_parser->scanner);
+   ptx_lex_destroy(ptx_parser->scanner);
    fclose(ptx_in);
-   return g_global_symbol_table;
+   return ptx_parser->g_global_symbol_table;
 }
 
-static int g_entry_point;
 
-void start_function( int entry_point ) 
+void ptx_recognizer::start_function( int entry_point )
 {
    PTX_PARSE_DPRINTF("start_function");
    init_directive_state();
@@ -190,11 +160,7 @@ void start_function( int entry_point )
    g_entry_func_param_index=0;
 }
 
-char *g_add_identifier_cached__identifier = NULL;
-int g_add_identifier_cached__array_dim;
-int g_add_identifier_cached__array_ident;
-
-void add_function_name( const char *name ) 
+void ptx_recognizer::add_function_name( const char *name )
 {
    PTX_PARSE_DPRINTF("add_function_name %s %s", name,  ((g_entry_point==1)?"(entrypoint)":((g_entry_point==2)?"(extern)":"")));
    bool prior_decl = g_global_symbol_table->add_function_decl( name, g_entry_point, &g_func_info, &g_current_symbol_table );
@@ -210,21 +176,21 @@ void add_function_name( const char *name )
    if( prior_decl ) {
       g_func_info->remove_args();
    }
-   g_global_symbol_table->add_function( g_func_info, g_filename, ptx_lineno );
+   g_global_symbol_table->add_function( g_func_info, gpgpu_ctx->g_filename, ptx_get_lineno(scanner) );
 }
 
 //Jin: handle instruction group for cdp
-void start_inst_group() {
+void ptx_recognizer::start_inst_group() {
    PTX_PARSE_DPRINTF("start_instruction_group");
    g_current_symbol_table = g_current_symbol_table->start_inst_group();
 }
 
-void end_inst_group() {
+void ptx_recognizer::end_inst_group() {
    PTX_PARSE_DPRINTF("end_instruction_group");
    g_current_symbol_table = g_current_symbol_table->end_inst_group();
 }
 
-void add_directive() 
+void ptx_recognizer::add_directive()
 {
    PTX_PARSE_DPRINTF("add_directive");
    init_directive_state();
@@ -232,7 +198,7 @@ void add_directive()
 
 #define mymax(a,b) ((a)>(b)?(a):(b))
 
-void end_function() 
+void ptx_recognizer::end_function()
 {
    PTX_PARSE_DPRINTF("end_function");
 
@@ -250,7 +216,7 @@ void end_function()
 #define parse_error(msg, ...) parse_error_impl(__FILE__,__LINE__, msg, ##__VA_ARGS__)
 #define parse_assert(cond,msg, ...) parse_assert_impl((cond),__FILE__,__LINE__, msg, ##__VA_ARGS__)
 
-void parse_error_impl( const char *file, unsigned line, const char *msg, ... )
+void ptx_recognizer::parse_error_impl( const char *file, unsigned line, const char *msg, ... )
 {
    va_list ap;
    char buf[1024];
@@ -259,13 +225,13 @@ void parse_error_impl( const char *file, unsigned line, const char *msg, ... )
    va_end(ap);
 
    g_error_detected = 1;
-   printf("%s:%u: Parse error: %s (%s:%u)\n\n", g_filename, ptx_lineno, buf, file, line);
-   ptx_error(NULL);
+   printf("%s:%u: Parse error: %s (%s:%u)\n\n", gpgpu_ctx->g_filename, ptx_get_lineno(scanner), buf, file, line);
+   ptx_error(scanner, NULL);
    abort();
    exit(1);
 }
 
-void parse_assert_impl( int test_value, const char *file, unsigned line, const char *msg, ... )
+void ptx_recognizer::parse_assert_impl( int test_value, const char *file, unsigned line, const char *msg, ... )
 {
    va_list ap;
    char buf[1024];
@@ -277,19 +243,17 @@ void parse_assert_impl( int test_value, const char *file, unsigned line, const c
       parse_error_impl(file,line, msg);
 }
 
-extern char linebuf[4096];
 
 
-void set_return()
+void ptx_recognizer::set_return()
 {
    parse_assert( (g_opcode == CALL_OP || g_opcode == CALLP_OP), "only call can have return value");
    g_operands.front().set_return();
    g_return_var = g_operands.front();
 }
 
-std::map<std::string,std::map<unsigned,const ptx_instruction*> > g_inst_lookup;
 
-const ptx_instruction *ptx_instruction_lookup( const char *filename, unsigned linenumber )
+const ptx_instruction *ptx_recognizer::ptx_instruction_lookup( const char *filename, unsigned linenumber )
 {
    std::map<std::string,std::map<unsigned,const ptx_instruction*> >::iterator f=g_inst_lookup.find(filename);
    if( f == g_inst_lookup.end() ) 
@@ -300,7 +264,7 @@ const ptx_instruction *ptx_instruction_lookup( const char *filename, unsigned li
    return l->second; 
 }
 
-void add_instruction() 
+void ptx_recognizer::add_instruction()
 {
    PTX_PARSE_DPRINTF("add_instruction: %s", ((g_opcode>0)?g_opcode_string[g_opcode]:"<label>") );
    assert( g_shader_core_config != 0 );
@@ -315,16 +279,17 @@ void add_instruction()
                                              g_wmma_options, 
                                              g_scalar_type,
                                              g_space_spec,
-                                             g_filename,
-                                             ptx_lineno,
+                                             gpgpu_ctx->g_filename,
+                                             ptx_get_lineno(scanner),
                                              linebuf,
-                                             g_shader_core_config );
+                                             g_shader_core_config,
+					     gpgpu_ctx );
    g_instructions.push_back(i);
-   g_inst_lookup[g_filename][ptx_lineno] = i;
+   g_inst_lookup[gpgpu_ctx->g_filename][ptx_get_lineno(scanner)] = i;
    init_instruction_state();
 }
 
-void add_variables() 
+void ptx_recognizer::add_variables()
 {
    PTX_PARSE_DPRINTF("add_variables");
    if ( !g_operands.empty() ) {
@@ -334,7 +299,7 @@ void add_variables()
    init_directive_state();
 }
 
-void set_variable_type()
+void ptx_recognizer::set_variable_type()
 {
    PTX_PARSE_DPRINTF("set_variable_type space_spec=%s scalar_type_spec=%s", 
            g_ptx_token_decode[g_space_spec.get_type()].c_str(), 
@@ -348,19 +313,12 @@ void set_variable_type()
                                                   g_extern_spec );
 }
 
-bool check_for_duplicates( const char *identifier )
+bool ptx_recognizer::check_for_duplicates( const char *identifier )
 {
    const symbol *s = g_current_symbol_table->lookup(identifier);
    return ( s != NULL );
 }
 
-extern std::set<std::string>   g_globals;
-extern std::set<std::string>   g_constants;
-
-int g_func_decl = 0;
-int g_ident_add_uid = 0;
-unsigned g_const_alloc = 1;
-
 // Returns padding that needs to be inserted ahead of address to make it aligned to min(size, maxalign)
 /*
  * @param address the address in bytes
@@ -378,7 +336,7 @@ int pad_address (new_addr_type address, unsigned size, unsigned maxalign) {
     return alignto ? ((alignto - (address % alignto)) % alignto) : 0;
 }
 
-void add_identifier( const char *identifier, int array_dim, unsigned array_ident ) 
+void ptx_recognizer::add_identifier( const char *identifier, int array_dim, unsigned array_ident )
 {
    if(array_ident==ARRAY_IDENTIFIER){
        g_size *= array_dim;
@@ -426,7 +384,7 @@ void add_identifier( const char *identifier, int array_dim, unsigned array_ident
    default:
       break;
    }
-   g_last_symbol = g_current_symbol_table->add_variable(identifier,type,num_bits/8,g_filename,ptx_lineno);
+   g_last_symbol = g_current_symbol_table->add_variable(identifier,type,num_bits/8,gpgpu_ctx->g_filename,ptx_get_lineno(scanner));
    switch ( ti.get_memory_space().get_type() ) {
    case reg_space: {
       regnum = g_current_symbol_table->next_reg_num();
@@ -489,7 +447,7 @@ void add_identifier( const char *identifier, int array_dim, unsigned array_ident
          g_current_symbol_table->alloc_global( num_bits/8 + addr_pad ); 
       }
       if( g_current_symbol_table == g_global_symbol_table ) { 
-         g_constants.insert( identifier ); 
+         gpgpu_ctx->func_sim->g_constants.insert( identifier );
       }
       assert( g_current_symbol_table != NULL );
       g_sym_name_to_symbol_table[ identifier ] = g_current_symbol_table;
@@ -507,7 +465,7 @@ void add_identifier( const char *identifier, int array_dim, unsigned array_ident
       fflush(stdout);
       g_last_symbol->set_address( addr+addr_pad );
       g_current_symbol_table->alloc_global( num_bits/8 + addr_pad );
-      g_globals.insert( identifier );
+      gpgpu_ctx->func_sim->g_globals.insert( identifier );
       assert( g_current_symbol_table != NULL );
       g_sym_name_to_symbol_table[ identifier ] = g_current_symbol_table;
       break;
@@ -569,7 +527,7 @@ void add_identifier( const char *identifier, int array_dim, unsigned array_ident
    }
 }
 
-void add_constptr(const char* identifier1, const char* identifier2, int offset)
+void ptx_recognizer::add_constptr(const char* identifier1, const char* identifier2, int offset)
 {
    symbol *s1 = g_current_symbol_table->lookup(identifier1);
    const symbol *s2 = g_current_symbol_table->lookup(identifier2);
@@ -584,7 +542,7 @@ void add_constptr(const char* identifier1, const char* identifier2, int offset)
    s1->set_address( addr + offset );
 }
 
-void add_function_arg()
+void ptx_recognizer::add_function_arg()
 {
    assert(g_size>0);
    if( g_func_info ) {
@@ -597,20 +555,20 @@ void add_function_arg()
 
 }
 
-void add_extern_spec() 
+void ptx_recognizer::add_extern_spec()
 {
    PTX_PARSE_DPRINTF("add_extern_spec");
    g_extern_spec = 1;
 }
 
-void add_alignment_spec( int spec )
+void ptx_recognizer::add_alignment_spec( int spec )
 {
    PTX_PARSE_DPRINTF("add_alignment_spec");
    parse_assert( g_alignment_spec == -1, "multiple .align specifiers per variable declaration not allowed." );
    g_alignment_spec = spec;
 }
 
-void add_ptr_spec( enum _memory_space_t spec ) 
+void ptx_recognizer::add_ptr_spec( enum _memory_space_t spec )
 {
    PTX_PARSE_DPRINTF("add_ptr_spec \"%s\"", g_ptx_token_decode[spec].c_str() );
    parse_assert( g_ptr_spec == undefined_space, "multiple ptr space specifiers not allowed." );
@@ -618,7 +576,7 @@ void add_ptr_spec( enum _memory_space_t spec )
    g_ptr_spec = spec; 
 }
 
-void add_space_spec( enum _memory_space_t spec, int value ) 
+void ptx_recognizer::add_space_spec( enum _memory_space_t spec, int value )
 {
    PTX_PARSE_DPRINTF("add_space_spec \"%s\"", g_ptx_token_decode[spec].c_str() );
    parse_assert( g_space_spec == undefined_space, "multiple space specifiers not allowed." );
@@ -637,14 +595,14 @@ void add_space_spec( enum _memory_space_t spec, int value )
    }
 }
 
-void add_vector_spec(int spec ) 
+void ptx_recognizer::add_vector_spec(int spec )
 {
    PTX_PARSE_DPRINTF("add_vector_spec");
    parse_assert( g_vector_spec == -1, "multiple vector specifiers not allowed." );
    g_vector_spec = spec;
 }
 
-void add_scalar_type_spec( int type_spec ) 
+void ptx_recognizer::add_scalar_type_spec( int type_spec )
 {
    //save size of parameter
    switch ( type_spec ) {
@@ -682,23 +640,23 @@ void add_scalar_type_spec( int type_spec )
    g_scalar_type_spec = type_spec;
 }
 
-void add_label( const char *identifier ) 
+void ptx_recognizer::add_label( const char *identifier )
 {
    PTX_PARSE_DPRINTF("add_label");
    symbol *s = g_current_symbol_table->lookup(identifier);
    if ( s != NULL ) {
       g_label = s;
    } else {
-      g_label = g_current_symbol_table->add_variable(identifier,NULL,0,g_filename,ptx_lineno);
+      g_label = g_current_symbol_table->add_variable(identifier,NULL,0,gpgpu_ctx->g_filename,ptx_get_lineno(scanner));
    }
 }
 
-void add_opcode( int opcode ) 
+void ptx_recognizer::add_opcode( int opcode )
 {
    g_opcode = opcode;
 }
 
-void add_pred( const char *identifier, int neg, int predModifier ) 
+void ptx_recognizer::add_pred( const char *identifier, int neg, int predModifier )
 {
    PTX_PARSE_DPRINTF("add_pred");
    const symbol *s = g_current_symbol_table->lookup(identifier);
@@ -711,17 +669,17 @@ void add_pred( const char *identifier, int neg, int predModifier )
    g_pred_mod = predModifier;
 }
 
-void add_option( int option ) 
+void ptx_recognizer::add_option( int option )
 {
    PTX_PARSE_DPRINTF("add_option");
    g_options.push_back( option );
 }
-void add_wmma_option( int option ) 
+void ptx_recognizer::add_wmma_option( int option )
 {
    PTX_PARSE_DPRINTF("add_option");
    g_wmma_options.push_back( option );
 }
-void add_double_operand( const char *d1, const char *d2 )
+void ptx_recognizer::add_double_operand( const char *d1, const char *d2 )
 {
    //operands that access two variables.
    //eg. s[$ofs1+$r0], g[$ofs1+=$r0]
@@ -731,38 +689,38 @@ void add_double_operand( const char *d1, const char *d2 )
    const symbol *s1 = g_current_symbol_table->lookup(d1);
    const symbol *s2 = g_current_symbol_table->lookup(d2);
    parse_assert( s1 != NULL && s2 != NULL, "component(s) missing declarations.");
-   g_operands.push_back( operand_info(s1,s2) );
+   g_operands.push_back( operand_info(s1,s2,gpgpu_ctx) );
 }
 
-void add_1vector_operand( const char *d1 ) 
+void ptx_recognizer::add_1vector_operand( const char *d1 )
 {
    // handles the single element vector operand ({%v1}) found in tex.1d instructions
    PTX_PARSE_DPRINTF("add_1vector_operand");
    const symbol *s1 = g_current_symbol_table->lookup(d1);
    parse_assert( s1 != NULL, "component(s) missing declarations.");
-   g_operands.push_back( operand_info(s1,NULL,NULL,NULL) );
+   g_operands.push_back( operand_info(s1,NULL,NULL,NULL,gpgpu_ctx) );
 }
 
-void add_2vector_operand( const char *d1, const char *d2 ) 
+void ptx_recognizer::add_2vector_operand( const char *d1, const char *d2 )
 {
    PTX_PARSE_DPRINTF("add_2vector_operand");
    const symbol *s1 = g_current_symbol_table->lookup(d1);
    const symbol *s2 = g_current_symbol_table->lookup(d2);
    parse_assert( s1 != NULL && s2 != NULL, "v2 component(s) missing declarations.");
-   g_operands.push_back( operand_info(s1,s2,NULL,NULL) );
+   g_operands.push_back( operand_info(s1,s2,NULL,NULL,gpgpu_ctx) );
 }
 
-void add_3vector_operand( const char *d1, const char *d2, const char *d3 ) 
+void ptx_recognizer::add_3vector_operand( const char *d1, const char *d2, const char *d3 )
 {
    PTX_PARSE_DPRINTF("add_3vector_operand");
    const symbol *s1 = g_current_symbol_table->lookup(d1);
    const symbol *s2 = g_current_symbol_table->lookup(d2);
    const symbol *s3 = g_current_symbol_table->lookup(d3);
    parse_assert( s1 != NULL && s2 != NULL && s3 != NULL, "v3 component(s) missing declarations.");
-   g_operands.push_back( operand_info(s1,s2,s3,NULL) );
+   g_operands.push_back( operand_info(s1,s2,s3,NULL,gpgpu_ctx) );
 }
 
-void add_4vector_operand( const char *d1, const char *d2, const char *d3, const char *d4 ) 
+void ptx_recognizer::add_4vector_operand( const char *d1, const char *d2, const char *d3, const char *d4 )
 {
    PTX_PARSE_DPRINTF("add_4vector_operand");
    const symbol *s1 = g_current_symbol_table->lookup(d1);
@@ -774,9 +732,9 @@ void add_4vector_operand( const char *d1, const char *d2, const char *d3, const
    if ( s2 == null_op ) s2 = NULL;
    if ( s3 == null_op ) s3 = NULL;
    if ( s4 == null_op ) s4 = NULL;
-   g_operands.push_back( operand_info(s1,s2,s3,s4) );
+   g_operands.push_back( operand_info(s1,s2,s3,s4,gpgpu_ctx) );
 }
-void add_8vector_operand( const char *d1, const char *d2, const char *d3, const char *d4,const char *d5,const char *d6,const char *d7,const char *d8 ) 
+void ptx_recognizer::add_8vector_operand( const char *d1, const char *d2, const char *d3, const char *d4,const char *d5,const char *d6,const char *d7,const char *d8 )
 {
    PTX_PARSE_DPRINTF("add_8vector_operand");
    const symbol *s1 = g_current_symbol_table->lookup(d1);
@@ -796,16 +754,16 @@ void add_8vector_operand( const char *d1, const char *d2, const char *d3, const
    if ( s6 == null_op ) s6 = NULL;
    if ( s7 == null_op ) s7 = NULL;
    if ( s8 == null_op ) s8 = NULL;
-   g_operands.push_back( operand_info(s1,s2,s3,s4,s5,s6,s7,s8) );
+   g_operands.push_back( operand_info(s1,s2,s3,s4,s5,s6,s7,s8,gpgpu_ctx) );
 }
 
-void add_builtin_operand( int builtin, int dim_modifier ) 
+void ptx_recognizer::add_builtin_operand( int builtin, int dim_modifier )
 {
    PTX_PARSE_DPRINTF("add_builtin_operand");
-   g_operands.push_back( operand_info(builtin,dim_modifier) );
+   g_operands.push_back( operand_info(builtin,dim_modifier,gpgpu_ctx) );
 }
 
-void add_memory_operand() 
+void ptx_recognizer::add_memory_operand()
 {
    PTX_PARSE_DPRINTF("add_memory_operand");
    assert( !g_operands.empty() );
@@ -813,7 +771,7 @@ void add_memory_operand()
 }
 
 /*TODO: add other memory locations*/
-void change_memory_addr_space(const char *identifier) 
+void ptx_recognizer::change_memory_addr_space(const char *identifier)
 {
    /*0 = N/A, not reading from memory
     *1 = global memory
@@ -860,7 +818,7 @@ void change_memory_addr_space(const char *identifier)
    parse_assert(recognizedType, "Error: unrecognized memory type.");
 }
 
-void change_operand_lohi( int lohi )
+void ptx_recognizer::change_operand_lohi( int lohi )
 {
    /*0 = N/A, read entire operand
     *1 = lo, reading from lowest bits
@@ -874,14 +832,14 @@ void change_operand_lohi( int lohi )
 
 }
 
-void set_immediate_operand_type ()
+void ptx_recognizer::set_immediate_operand_type ()
 {
      PTX_PARSE_DPRINTF("set_immediate_operand_type");
      assert( !g_operands.empty() );
      g_operands.back().set_immediate_addr();
 }
 
-void change_double_operand_type( int operand_type )
+void ptx_recognizer::change_double_operand_type( int operand_type )
 {
    /*
     *-3 = reg / reg (set instruction, but both get same value)
@@ -913,7 +871,7 @@ void change_double_operand_type( int operand_type )
 
 }
 
-void change_operand_neg( )
+void ptx_recognizer::change_operand_neg( )
 {
    PTX_PARSE_DPRINTF("change_operand_neg");
    assert( !g_operands.empty() );
@@ -922,53 +880,53 @@ void change_operand_neg( )
 
 }
 
-void add_literal_int( int value ) 
+void ptx_recognizer::add_literal_int( int value )
 {
    PTX_PARSE_DPRINTF("add_literal_int");
-   g_operands.push_back( operand_info(value) );
+   g_operands.push_back( operand_info(value,gpgpu_ctx) );
 }
 
-void add_literal_float( float value ) 
+void ptx_recognizer::add_literal_float( float value )
 {
    PTX_PARSE_DPRINTF("add_literal_float");
-   g_operands.push_back( operand_info(value) );
+   g_operands.push_back( operand_info(value,gpgpu_ctx) );
 }
 
-void add_literal_double( double value ) 
+void ptx_recognizer::add_literal_double( double value )
 {
    PTX_PARSE_DPRINTF("add_literal_double");
-   g_operands.push_back( operand_info(value) );
+   g_operands.push_back( operand_info(value,gpgpu_ctx) );
 }
 
-void add_scalar_operand( const char *identifier ) 
+void ptx_recognizer::add_scalar_operand( const char *identifier )
 {
    PTX_PARSE_DPRINTF("add_scalar_operand");
    const symbol *s = g_current_symbol_table->lookup(identifier);
    if ( s == NULL ) {
       if ( g_opcode == BRA_OP || g_opcode == CALLP_OP) {
          // forward branch target...
-         s = g_current_symbol_table->add_variable(identifier,NULL,0,g_filename,ptx_lineno);
+         s = g_current_symbol_table->add_variable(identifier,NULL,0,gpgpu_ctx->g_filename,ptx_get_lineno(scanner));
       } else {
          std::string msg = std::string("operand \"") + identifier + "\" has no declaration.";
          parse_error( msg.c_str() );
       }
    }
-   g_operands.push_back( operand_info(s) );
+   g_operands.push_back( operand_info(s,gpgpu_ctx) );
 }
 
-void add_neg_pred_operand( const char *identifier ) 
+void ptx_recognizer::add_neg_pred_operand( const char *identifier )
 {
    PTX_PARSE_DPRINTF("add_neg_pred_operand");
    const symbol *s = g_current_symbol_table->lookup(identifier);
    if ( s == NULL ) {
-       s = g_current_symbol_table->add_variable(identifier,NULL,1,g_filename,ptx_lineno);
+       s = g_current_symbol_table->add_variable(identifier,NULL,1,gpgpu_ctx->g_filename,ptx_get_lineno(scanner));
    }
-   operand_info op(s);
+   operand_info op(s, gpgpu_ctx);
    op.set_neg_pred();
    g_operands.push_back( op );
 }
 
-void add_address_operand( const char *identifier, int offset ) 
+void ptx_recognizer::add_address_operand( const char *identifier, int offset )
 {
    PTX_PARSE_DPRINTF("add_address_operand");
    const symbol *s = g_current_symbol_table->lookup(identifier);
@@ -976,28 +934,28 @@ void add_address_operand( const char *identifier, int offset )
       std::string msg = std::string("operand \"") + identifier + "\" has no declaration.";
       parse_error( msg.c_str() );
    }
-   g_operands.push_back( operand_info(s,offset) );
+   g_operands.push_back( operand_info(s,offset,gpgpu_ctx) );
 }
 
-void add_address_operand2( int offset )
+void ptx_recognizer::add_address_operand2( int offset )
 {
    PTX_PARSE_DPRINTF("add_address_operand");
-   g_operands.push_back( operand_info((unsigned)offset) );
+   g_operands.push_back( operand_info((unsigned)offset,gpgpu_ctx) );
 }
 
-void add_array_initializer()
+void ptx_recognizer::add_array_initializer()
 {
    g_last_symbol->add_initializer(g_operands);
 }
 
-void add_version_info( float ver, unsigned ext )
+void ptx_recognizer::add_version_info( float ver, unsigned ext )
 {
    g_global_symbol_table->set_ptx_version(ver,ext);
 }
 
-void add_file( unsigned num, const char *filename )
+void ptx_recognizer::add_file( unsigned num, const char *filename )
 {
-   if( g_filename == NULL ) {
+   if( gpgpu_ctx->g_filename == NULL ) {
       char *b = strdup(filename);
       char *l=b;
       char *n=b;
@@ -1013,7 +971,7 @@ void add_file( unsigned num, const char *filename )
 
       char *q = strtok(NULL,".");
       if( q && !strcmp(q,"cu") ) {
-          g_filename = strdup(buf);
+          gpgpu_ctx->g_filename = strdup(buf);
       }
 
       free( b );
@@ -1022,44 +980,44 @@ void add_file( unsigned num, const char *filename )
    g_current_symbol_table = g_global_symbol_table;
 }
 
-void *reset_symtab()
+void * ptx_recognizer::reset_symtab()
 {
    void *result = g_current_symbol_table;
    g_current_symbol_table = g_global_symbol_table;
    return result;
 }
 
-void set_symtab(void*symtab)
+void ptx_recognizer::set_symtab(void*symtab)
 {
    g_current_symbol_table = (symbol_table*)symtab;
 }
 
-void add_pragma( const char *str )
+void ptx_recognizer::add_pragma( const char *str )
 {
    printf("GPGPU-Sim PTX: Warning -- ignoring pragma '%s'\n", str );
 }
 
-void version_header(double a) {}  //intentional dummy function
+void ptx_recognizer::version_header(double a) {}  //intentional dummy function
 
-void target_header(char* a) 
+void ptx_recognizer::target_header(char* a)
 {
    g_global_symbol_table->set_sm_target(a,NULL,NULL);
 }
 
-void target_header2(char* a, char* b) 
+void ptx_recognizer::target_header2(char* a, char* b)
 {
    g_global_symbol_table->set_sm_target(a,b,NULL);
 }
 
-void target_header3(char* a, char* b, char* c) 
+void ptx_recognizer::target_header3(char* a, char* b, char* c)
 {
    g_global_symbol_table->set_sm_target(a,b,c);
 }
 
-void maxnt_id(int x, int y, int z) {
+void ptx_recognizer::maxnt_id(int x, int y, int z) {
   g_func_info->set_maxnt_id(x * y * z);
 }
 
-void func_header(const char* a) {} //intentional dummy function
-void func_header_info(const char* a) {} //intentional dummy function
-void func_header_info_int(const char* a, int b) {} //intentional dummy function
+void ptx_recognizer::func_header(const char* a) {} //intentional dummy function
+void ptx_recognizer::func_header_info(const char* a) {} //intentional dummy function
+void ptx_recognizer::func_header_info_int(const char* a, int b) {} //intentional dummy function
diff --git a/src/cuda-sim/ptx_parser.h b/src/cuda-sim/ptx_parser.h
index 7b6e3a2..11a3d20 100644
--- a/src/cuda-sim/ptx_parser.h
+++ b/src/cuda-sim/ptx_parser.h
@@ -29,77 +29,159 @@
 #define ptx_parser_INCLUDED
 
 #include "../abstract_hardware_model.h"
-extern const char *g_filename;
-extern int g_error_detected;
+#include "ptx_ir.h"
 
-#ifdef __cplusplus 
-class symbol_table* init_parser(const char*);
-const class ptx_instruction *ptx_instruction_lookup( const char *filename, unsigned linenumber );
-#endif
+class gpgpu_context;
+typedef void * yyscan_t;
+class ptx_recognizer {
+    public:
+	ptx_recognizer( gpgpu_context* ctx ) : g_return_var(ctx) {
+	    scanner = NULL;
+	    g_size = -1;
+	    g_add_identifier_cached__identifier = NULL;
+	    g_alignment_spec = -1;
+	    g_var_type = NULL;
+	    g_opcode = -1;
+	    g_space_spec = undefined_space;
+	    g_ptr_spec = undefined_space;
+	    g_scalar_type_spec = -1;
+	    g_vector_spec = -1;
+	    g_extern_spec = 0;
+	    g_func_decl = 0;
+	    g_ident_add_uid = 0;
+	    g_const_alloc = 1;
+	    g_max_regs_per_thread = 0;
+	    g_global_symbol_table = NULL;
+	    g_current_symbol_table = NULL;
+	    g_last_symbol = NULL;
+	    g_error_detected = 0;
+	    g_entry_func_param_index=0;
+	    g_func_info = NULL;
+	    g_debug_ir_generation=false;
+	    gpgpu_ctx = ctx;
+	}
+	// global list
+	yyscan_t scanner;
+#define PTX_LINEBUF_SIZE (4*1024)
+	char linebuf[PTX_LINEBUF_SIZE];
+	unsigned col;
+	int g_size;
+	char *g_add_identifier_cached__identifier;
+	int g_add_identifier_cached__array_dim;
+	int g_add_identifier_cached__array_ident;
+	int g_alignment_spec;
+	// variable declaration stuff:
+	type_info *g_var_type;
+	// instruction definition stuff:
+	const symbol *g_pred;
+	int g_neg_pred;
+	int g_pred_mod;
+	symbol *g_label;
+	int g_opcode;
+	std::list<operand_info> g_operands;
+	std::list<int> g_options;
+	std::list<int> g_wmma_options;
+	std::list<int> g_scalar_type;
+	// type specifier stuff:
+	memory_space_t g_space_spec;
+	memory_space_t g_ptr_spec;
+	int g_scalar_type_spec;
+	int g_vector_spec;
+	int g_extern_spec;
+	int g_func_decl;
+	int g_ident_add_uid;
+	unsigned g_const_alloc;
+	unsigned g_max_regs_per_thread;
+	symbol_table *g_global_symbol_table;
+	symbol_table *g_current_symbol_table;
+	symbol *g_last_symbol;
+	std::list<ptx_instruction*> g_instructions;
+	int g_error_detected;
+	unsigned g_entry_func_param_index;
+	function_info *g_func_info;
+	operand_info g_return_var;
+	bool g_debug_ir_generation;
+	int g_entry_point;
+	const struct core_config *g_shader_core_config;
+	std::map<std::string,std::map<unsigned,const ptx_instruction*> > g_inst_lookup;
+	// the program intermediate representation...
+	std::map<std::string,symbol_table*> g_sym_name_to_symbol_table;
+	// backward pointer
+	class gpgpu_context* gpgpu_ctx;
+
+	// member function list
+	void init_directive_state();
+	void init_instruction_state();
+	void start_function( int entry_point );
+	void add_function_name( const char *fname );
+	void add_directive();
+	void end_function();
+	void add_identifier( const char *s, int array_dim, unsigned array_ident );
+	void add_function_arg();
+	void add_scalar_type_spec( int type_spec );
+	void add_scalar_operand( const char *identifier );
+	void add_neg_pred_operand( const char *identifier );
+	void add_variables();
+	void set_variable_type();
+	void add_opcode( int opcode );
+	void add_pred( const char *identifier, int negate, int predModifier );
+	void add_1vector_operand( const char *d1 );
+	void add_2vector_operand( const char *d1, const char *d2 );
+	void add_3vector_operand( const char *d1, const char *d2, const char *d3 );
+	void add_4vector_operand( const char *d1, const char *d2, const char *d3, const char *d4 );
+	void add_8vector_operand( const char *d1, const char *d2, const char *d3, const char *d4 ,const char *d5,const char *d6,const char *d7,const char *d8);
+	void add_option(int option );
+	void add_wmma_option(int option );
+	void add_builtin_operand( int builtin, int dim_modifier );
+	void add_memory_operand( );
+	void add_literal_int( int value );
+	void add_literal_float( float value );
+	void add_literal_double( double value );
+	void add_address_operand( const char *identifier, int offset );
+	void add_address_operand2( int offset );
+	void add_label( const char *idenfiier );
+	void add_vector_spec(int spec );
+	void add_space_spec( enum _memory_space_t spec, int value );
+	void add_ptr_spec( enum _memory_space_t spec );
+	void add_extern_spec();
+	void add_instruction();
+	void set_return();
+	void add_alignment_spec( int spec );
+	void add_array_initializer();
+	void add_file( unsigned num, const char *filename );
+	void add_version_info( float ver, unsigned ext);
+	void *reset_symtab();
+	void set_symtab(void*);
+	void add_pragma( const char *str );
+	void func_header(const char* a);
+	void func_header_info(const char* a);
+	void func_header_info_int(const char* a, int b);
+	void add_constptr(const char* identifier1, const char* identifier2, int offset);
+	void target_header(char* a);
+	void target_header2(char* a, char* b);
+	void target_header3(char* a, char* b, char* c);
+	void add_double_operand( const char *d1, const char *d2 );
+	void change_memory_addr_space( const char *identifier );
+	void change_operand_lohi( int lohi );
+	void change_double_operand_type( int addr_type );
+	void change_operand_neg( );
+	void set_immediate_operand_type( );
+	void version_header(double a);
+	void maxnt_id(int x, int y, int z);
+	void parse_error_impl( const char *file, unsigned line, const char *msg, ... );
+	void parse_assert_impl( int test_value, const char *file, unsigned line, const char *msg, ... );
+	//Jin: handle instructino group for cdp
+	void start_inst_group();
+	void end_inst_group();
+	bool check_for_duplicates( const char *identifier );
+	void read_parser_environment_variables(); 
+	void set_ptx_warp_size(const struct core_config * warp_size);
+	const class ptx_instruction *ptx_instruction_lookup( const char *filename, unsigned linenumber );
+
+};
 
 const char *decode_token( int type );
 void read_parser_environment_variables();
-void start_function( int entry_point );
-void add_function_name( const char *fname );
-void init_directive_state();
-void add_directive(); 
-void end_function();
-void add_identifier( const char *s, int array_dim, unsigned array_ident );
-void add_function_arg();
-void add_scalar_type_spec( int type_spec );
-void add_scalar_operand( const char *identifier );
-void add_neg_pred_operand( const char *identifier );
-void add_variables();
-void set_variable_type();
-void add_opcode( int opcode );
-void add_pred( const char *identifier, int negate, int predModifier );
-void add_1vector_operand( const char *d1 );
-void add_2vector_operand( const char *d1, const char *d2 );
-void add_3vector_operand( const char *d1, const char *d2, const char *d3 );
-void add_4vector_operand( const char *d1, const char *d2, const char *d3, const char *d4 );
-void add_8vector_operand( const char *d1, const char *d2, const char *d3, const char *d4 ,const char *d5,const char *d6,const char *d7,const char *d8);
-void add_option(int option );
-void add_wmma_option(int option );
-void add_builtin_operand( int builtin, int dim_modifier );
-void add_memory_operand( );
-void add_literal_int( int value );
-void add_literal_float( float value );
-void add_literal_double( double value );
-void add_address_operand( const char *identifier, int offset );
-void add_address_operand2( int offset );
-void add_label( const char *idenfiier );
-void add_vector_spec(int spec );
-void add_space_spec( enum _memory_space_t spec, int value );
-void add_ptr_spec( enum _memory_space_t spec ); 
-void add_extern_spec();
-void add_instruction();
-void set_return();
-void add_alignment_spec( int spec );
-void add_array_initializer();
-void add_file( unsigned num, const char *filename );
-void add_version_info( float ver, unsigned ext);
-void *reset_symtab();
-void set_symtab(void*);
-void add_pragma( const char *str );
-void func_header(const char* a);
-void func_header_info(const char* a);
-void func_header_info_int(const char* a, int b);
-void add_constptr(const char* identifier1, const char* identifier2, int offset);
-void target_header(char* a);
-void target_header2(char* a, char* b);
-void target_header3(char* a, char* b, char* c);
-void add_double_operand( const char *d1, const char *d2 );
-void change_memory_addr_space( const char *identifier );
-void change_operand_lohi( int lohi );
-void change_double_operand_type( int addr_type );
-void change_operand_neg( );
-void set_immediate_operand_type( );
-void version_header(double a);
-void maxnt_id(int x, int y, int z);
-
-//Jin: handle instructino group for cdp
-void start_inst_group();
-void end_inst_group();
 
 #define NON_ARRAY_IDENTIFIER 1
 #define ARRAY_IDENTIFIER_NO_DIM 2
diff --git a/src/cuda-sim/ptx_sim.cc b/src/cuda-sim/ptx_sim.cc
index 820287d..949ee66 100644
--- a/src/cuda-sim/ptx_sim.cc
+++ b/src/cuda-sim/ptx_sim.cc
@@ -28,23 +28,25 @@
 #include "ptx_sim.h"
 #include <string>
 #include "ptx_ir.h"
+class ptx_recognizer;
+typedef void * yyscan_t;
 #include "ptx.tab.h"
 #include "../gpgpu-sim/gpu-sim.h"
 #include "../gpgpu-sim/shader.h"
+#include "../../libcuda/gpgpu_context.h"
 
 void feature_not_implemented( const char *f );
 
-std::set<unsigned long long> g_ptx_cta_info_sm_idx_used;
-unsigned long long g_ptx_cta_info_uid = 1;
 
-ptx_cta_info::ptx_cta_info( unsigned sm_idx )
+ptx_cta_info::ptx_cta_info( unsigned sm_idx, gpgpu_context* ctx )
 {
-   assert( g_ptx_cta_info_sm_idx_used.find(sm_idx) == g_ptx_cta_info_sm_idx_used.end() );
-   g_ptx_cta_info_sm_idx_used.insert(sm_idx);
+   assert( ctx->func_sim->g_ptx_cta_info_sm_idx_used.find(sm_idx) == ctx->func_sim->g_ptx_cta_info_sm_idx_used.end() );
+   ctx->func_sim->g_ptx_cta_info_sm_idx_used.insert(sm_idx);
 
    m_sm_idx = sm_idx;
-   m_uid = g_ptx_cta_info_uid++;
+   m_uid = (ctx->g_ptx_cta_info_uid)++;
    m_bar_threads = 0;
+   gpgpu_ctx = ctx;
 }
 
 void ptx_cta_info::add_thread( ptx_thread_info *thd )
@@ -164,18 +166,16 @@ void ptx_warp_info::reset_done_threads()
 	m_done_threads = 0;
 }
 
-unsigned g_ptx_thread_info_uid_next=1;
-unsigned g_ptx_thread_info_delete_count=0;
 
 ptx_thread_info::~ptx_thread_info()
 {
-   g_ptx_thread_info_delete_count++;
+   m_gpu->gpgpu_ctx->func_sim->g_ptx_thread_info_delete_count++;
 }
 
 ptx_thread_info::ptx_thread_info( kernel_info_t &kernel )
     : m_kernel(kernel)
 {
-   m_uid = g_ptx_thread_info_uid_next++;
+   m_uid = kernel.entry()->gpgpu_ctx->func_sim->g_ptx_thread_info_uid_next++;
    m_core = NULL;
    m_barrier_num = -1;
    m_at_barrier = false;
@@ -222,7 +222,7 @@ void ptx_thread_info::set_done()
 {
    assert( !m_at_barrier );
    m_thread_done = true;
-   m_cycle_done = gpu_sim_cycle; 
+   m_cycle_done = m_gpu->gpu_sim_cycle;
 }
 
 unsigned ptx_thread_info::get_builtin( int builtin_id, unsigned dim_mod ) 
@@ -230,15 +230,15 @@ unsigned ptx_thread_info::get_builtin( int builtin_id, unsigned dim_mod )
    assert( m_valid );
    switch ((builtin_id&0xFFFF)) {
    case CLOCK_REG:
-      return (unsigned)(gpu_sim_cycle + gpu_tot_sim_cycle);
+      return (unsigned)(m_gpu->gpu_sim_cycle + m_gpu->gpu_tot_sim_cycle);
    case CLOCK64_REG:
       abort(); // change return value to unsigned long long?
 	  // GPGPUSim clock is 4 times slower - multiply by 4
-	   return (gpu_sim_cycle + gpu_tot_sim_cycle)*4;
+	   return (m_gpu->gpu_sim_cycle + m_gpu->gpu_tot_sim_cycle)*4;
    case HALFCLOCK_ID:
       // GPGPUSim clock is 4 times slower - multiply by 4
 	  // Hardware clock counter is incremented at half the shader clock frequency - divide by 2 (Henry '10)
-      return (gpu_sim_cycle + gpu_tot_sim_cycle)*2;
+      return (m_gpu->gpu_sim_cycle + m_gpu->gpu_tot_sim_cycle)*2;
    case CTAID_REG:
       assert( dim_mod < 3 );
       if( dim_mod == 0 ) return m_ctaid.x;
@@ -421,9 +421,9 @@ bool ptx_thread_info::callstack_pop()
    assert( !((rv_src != NULL) ^ (rv_dst != NULL)) ); // ensure caller and callee agree on whether there is a return value
 
    // read return value from callee frame
-   arg_buffer_t buffer;
+   arg_buffer_t buffer(m_gpu->gpgpu_ctx);
    if( rv_src != NULL ) 
-      buffer = copy_arg_to_buffer(this, operand_info(rv_src), rv_dst );
+      buffer = copy_arg_to_buffer(this, operand_info(rv_src, m_gpu->gpgpu_ctx), rv_dst );
 
    m_symbol_table = m_callstack.back().m_symbol_table;
    m_NPC = m_callstack.back().m_PC;
@@ -455,9 +455,9 @@ bool ptx_thread_info::callstack_pop_plus()
    assert( !((rv_src != NULL) ^ (rv_dst != NULL)) ); // ensure caller and callee agree on whether there is a return value
 
    // read return value from callee frame
-   arg_buffer_t buffer;
+   arg_buffer_t buffer(m_gpu->gpgpu_ctx);
    if( rv_src != NULL )
-      buffer = copy_arg_to_buffer(this, operand_info(rv_src), rv_dst );
+      buffer = copy_arg_to_buffer(this, operand_info(rv_src, m_gpu->gpgpu_ctx), rv_dst );
 
    m_symbol_table = m_callstack.back().m_symbol_table;
    m_NPC = m_callstack.back().m_PC;
diff --git a/src/cuda-sim/ptx_sim.h b/src/cuda-sim/ptx_sim.h
index d226fbe..c2b3cc8 100644
--- a/src/cuda-sim/ptx_sim.h
+++ b/src/cuda-sim/ptx_sim.h
@@ -164,7 +164,7 @@ class ptx_thread_info;
 
 class ptx_cta_info {
 public:
-   ptx_cta_info( unsigned sm_idx );
+   ptx_cta_info( unsigned sm_idx, gpgpu_context* ctx );
    void add_thread( ptx_thread_info *thd );
    unsigned num_threads() const;
    void check_cta_thread_status_and_reset();
@@ -176,6 +176,8 @@ public:
    void reset_bar_threads();
 
 private:
+   // backward pointer
+   class gpgpu_context* gpgpu_ctx;
    unsigned           m_bar_threads;
    unsigned long long         m_uid;
    unsigned                m_sm_idx;
@@ -341,6 +343,7 @@ public:
 
    dim3 get_ctaid() const { return m_ctaid; }
    dim3 get_tid() const { return m_tid; }
+   dim3 get_ntid() const { return m_ntid; }
    class gpgpu_sim *get_gpu() { return (gpgpu_sim*)m_gpu;}
    unsigned get_hw_tid() const { return m_hw_tid;}
    unsigned get_hw_ctaid() const { return m_hw_ctaid;}
diff --git a/src/cuda-sim/ptxinfo.l b/src/cuda-sim/ptxinfo.l
index 33c2748..51371e3 100644
--- a/src/cuda-sim/ptxinfo.l
+++ b/src/cuda-sim/ptxinfo.l
@@ -31,17 +31,23 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 %option noyywrap
 %option yylineno
 %option prefix="ptxinfo_"
+
+%option bison-bridge
+%option reentrant
+
 %{
+#include "ptx_loader.h"
 #include "ptxinfo.tab.h"
 #include <string.h>
+#include "../../libcuda/gpgpu_context.h"
 
 #define LINEBUF_SIZE 1024
-char ptxinfo_linebuf[LINEBUF_SIZE];
-unsigned ptxinfo_col = 0;
-#define TC if( (ptxinfo_lineno == 1) && ((ptxinfo_col + strlen(ptxinfo_text)) < LINEBUF_SIZE) ) { \
-		strncpy(ptxinfo_linebuf+ptxinfo_col,ptxinfo_text,strlen(ptxinfo_text)); \
+#define TC if( (yylineno == 1) && (ptxinfo->col + strlen(yytext) < LINEBUF_SIZE) ) { \
+		strncpy(ptxinfo->linebuf+ptxinfo->col,yytext,strlen(yytext)); \
 	   } \
-	   ptxinfo_col+=strlen(ptxinfo_text); 
+	   ptxinfo->col+=strlen(yytext);
+#define YY_DECL int ptxinfo_lex \
+	       (YYSTYPE * yylval_param , yyscan_t yyscanner, ptxinfo_data* ptxinfo)
 %}
 
 %%
@@ -61,12 +67,12 @@ unsigned ptxinfo_col = 0;
 "for"		TC; return FOR;
 "textures"	TC; return TEXTURES;
 "error   : Duplicate definition of"	TC; return DUPLICATE;
-"function"	TC; ptxinfo_lval.string_value = strdup(yytext); return FUNCTION;
-"variable"	TC; ptxinfo_lval.string_value = strdup(yytext); return VARIABLE;
+"function"	TC; yylval->string_value = strdup(yytext); return FUNCTION;
+"variable"	TC; yylval->string_value = strdup(yytext); return VARIABLE;
 "fatal   : Ptx assembly aborted due to errors"	TC; return FATAL;
 
-[_A-Za-z$%][_0-9A-Za-z$]*  TC; ptxinfo_lval.string_value = strdup(yytext); return IDENTIFIER;
-[-]{0,1}[0-9]+	 TC; ptxinfo_lval.int_value =  atoi(yytext); return INT_OPERAND;
+[_A-Za-z$%][_0-9A-Za-z$]*  TC; yylval->string_value = strdup(yytext); return IDENTIFIER;
+[-]{0,1}[0-9]+	 TC; yylval->int_value =  atoi(yytext); return INT_OPERAND;
 
 "+"	TC; return PLUS;
 ","     TC; return COMMA;
@@ -78,26 +84,23 @@ unsigned ptxinfo_col = 0;
 " " TC;
 "\t" TC;
 
-\n.*  ptxinfo_col=0; strncpy(ptxinfo_linebuf, yytext + 1, 1024); yyless( 1 );
+\n.*  ptxinfo->col=0; strncpy(ptxinfo->linebuf, yytext + 1, 1024); yyless( 1 );
 
 %%
 
-extern int g_ptxinfo_error_detected;
-extern const char *g_filename;
-extern const char *g_ptxinfo_filename;
-
-int ptxinfo_error( const char *s )
+int ptxinfo_error(yyscan_t yyscanner, ptxinfo_data* ptxinfo, const char* msg)
 {
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	int i;
-	g_ptxinfo_error_detected = 1;
+	ptxinfo->gpgpu_ctx->func_sim->g_ptxinfo_error_detected = 1;
 	fflush(stdout);
 	printf("GPGPU-Sim: ERROR while parsing output of ptxas (used to capture resource usage information)\n");
-	if( s != NULL )
-		printf("GPGPU-Sim:     %s (%s:%u) Syntax error:\n\n", g_filename, g_ptxinfo_filename, ptxinfo_lineno );
-	printf("   %s\n", ptxinfo_linebuf );
+	if( msg != NULL )
+		printf("GPGPU-Sim:     %s (%s:%u) Syntax error:\n\n", ptxinfo->gpgpu_ctx->g_filename, ptxinfo->g_ptxinfo_filename, yylineno );
+	printf("   %s\n", ptxinfo->linebuf );
 	printf("   ");
-	for( i=0; i < ptxinfo_col-1; i++ ) {
-		if( ptxinfo_linebuf[i] == '\t' ) printf("\t");
+	for( i=0; i < ptxinfo->col-1; i++ ) {
+		if( ptxinfo->linebuf[i] == '\t' ) printf("\t");
 		else printf(" ");
 	}
 			
diff --git a/src/cuda-sim/ptxinfo.y b/src/cuda-sim/ptxinfo.y
index d241d8c..b303958 100644
--- a/src/cuda-sim/ptxinfo.y
+++ b/src/cuda-sim/ptxinfo.y
@@ -27,6 +27,17 @@ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
+%{
+typedef void * yyscan_t;
+#include "ptx_loader.h"
+%}
+
+%define api.pure full
+%parse-param {yyscan_t scanner}
+%parse-param {ptxinfo_data* ptxinfo}
+%lex-param {yyscan_t scanner}
+%lex-param {ptxinfo_data* ptxinfo}
+
 %union {
   int    int_value;
   char * string_value;
@@ -66,15 +77,14 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 	
 	static unsigned g_declared;
 	static unsigned g_system;
-	int ptxinfo_lex(void);
-	void ptxinfo_addinfo();
+	int ptxinfo_lex(YYSTYPE * yylval_param, yyscan_t yyscanner, ptxinfo_data* ptxinfo);
+	void yyerror(yyscan_t yyscanner, ptxinfo_data* ptxinfo, const char* msg);
 	void ptxinfo_function(const char *fname );
 	void ptxinfo_regs( unsigned nregs );
 	void ptxinfo_lmem( unsigned declared, unsigned system );
 	void ptxinfo_gmem( unsigned declared, unsigned system );
 	void ptxinfo_smem( unsigned declared, unsigned system );
 	void ptxinfo_cmem( unsigned nbytes, unsigned bank );
-	int ptxinfo_error(const char*);
 	void ptxinfo_linenum( unsigned );
 	void ptxinfo_dup_type( const char* );
 %}
@@ -93,7 +103,7 @@ line: 	HEADER INFO COLON line_info
 	;
 
 line_info: function_name
-	| function_info { ptxinfo_addinfo(); }
+	| function_info { ptxinfo->ptxinfo_addinfo(); }
 	| gmem_info
 	;