updates fn calling generation

gen_input/templates/asmjit/CORENAME.cpp.gtl

@@ -38,7 +38,9 @@
 #include <asmjit/asmjit.h>
 #include <util/logging.h>
 #include <iss/instruction_decoder.h>
-
+<%def fcsr = registers.find {it.name=='FCSR'}
+if(fcsr != null) {%>
+#include <vm/fp_functions.h><%}%>
 #ifndef FMT_HEADER_ONLY
 #define FMT_HEADER_ONLY
 #endif
@@ -88,7 +90,6 @@ protected:
     using super::write_reg_to_mem;
     using super::gen_read_mem;
     using super::gen_write_mem;
-    using super::gen_wait;
     using super::gen_leave;
     using super::gen_sync;
    
@@ -100,7 +101,9 @@ protected:
     void gen_block_prologue(jit_holder& jh) override;
     void gen_block_epilogue(jit_holder& jh) override;
     inline const char *name(size_t index){return traits::reg_aliases.at(index);}
-
+<%if(fcsr != null) {%>
+    inline const char *fname(size_t index){return index < 32?name(index+traits::F0):"illegal";}   
+<%}%>
     void gen_instr_prologue(jit_holder& jh);
     void gen_instr_epilogue(jit_holder& jh);
     inline void gen_raise(jit_holder& jh, uint16_t trap_id, uint16_t cause);
@@ -113,6 +116,9 @@ protected:
         auto sign_mask = 1ULL<<(W-1);
         return (from & mask) | ((from & sign_mask) ? ~mask : 0);
     }
+<%functions.each{ it.eachLine { %>
+    ${it}<%}%>
+<%}%>
 private:
     /****************************************************************************
      * start opcode definitions
@@ -195,7 +201,7 @@ private:
         gen_raise(jh, 0, 2);
         gen_sync(jh, POST_SYNC, instr_descr.size());
         gen_instr_epilogue(jh);
-        return BRANCH;
+        return ILLEGAL_INSTR;
     }
 };
 
@@ -224,9 +230,9 @@ continuation_e vm_impl<ARCH>::gen_single_inst_behavior(virt_addr_t &pc, unsigned
         paddr = this->core.virt2phys(pc);
     auto res = this->core.read(paddr, 4, data);
     if (res != iss::Ok)
-        throw trap_access(TRAP_ID, pc.val);
+        return ILLEGAL_FETCH;
     if (instr == 0x0000006f || (instr&0xffff)==0xa001)
-        throw simulation_stopped(0); // 'J 0' or 'C.J 0'
+        return JUMP_TO_SELF;
     ++inst_cnt;
     uint32_t inst_index = instr_decoder.decode_instr(instr);
     compile_func f = nullptr;

gen_input/templates/interp/CORENAME.cpp.gtl

@@ -267,7 +267,7 @@ typename vm_base<ARCH>::virt_addr_t vm_impl<ARCH>::execute_inst(finish_cond_e co
             uint32_t inst_index = instr_decoder.decode_instr(instr);
             opcode_e inst_id = arch::traits<ARCH>::opcode_e::MAX_OPCODE;;
             if(inst_index <instr_descr.size())
-                inst_id = instr_descr.at(instr_decoder.decode_instr(instr)).op;
+                inst_id = instr_descr[inst_index].op;
 
             // pre execution stuff
             this->core.reg.last_branch = 0;
@@ -279,6 +279,7 @@ typename vm_base<ARCH>::virt_addr_t vm_impl<ARCH>::execute_inst(finish_cond_e co
                     <%}%>if(this->disass_enabled){
                         /* generate console output when executing the command */<%instr.disass.eachLine{%>
                         ${it}<%}%>
+                        this->core.disass_output(pc.val, mnemonic);
                     }
                     // used registers<%instr.usedVariables.each{ k,v->
                     if(v.isArray) {%>

gen_input/templates/llvm/CORENAME.cpp.gtl

@@ -37,7 +37,9 @@
 #include <iss/llvm/vm_base.h>
 #include <util/logging.h>
 #include <iss/instruction_decoder.h>
-
+<%def fcsr = registers.find {it.name=='FCSR'}
+if(fcsr != null) {%>
+#include <vm/fp_functions.h><%}%>
 #ifndef FMT_HEADER_ONLY
 #define FMT_HEADER_ONLY
 #endif
@@ -83,7 +85,9 @@ protected:
     using vm_base<ARCH>::get_reg_ptr;
 
     inline const char *name(size_t index){return traits::reg_aliases.at(index);}
-
+<%if(fcsr != null) {%>
+    inline const char *fname(size_t index){return index < 32?name(index+traits::F0):"illegal";}   
+<%}%>
     template <typename T> inline ConstantInt *size(T type) {
         return ConstantInt::get(getContext(), APInt(32, type->getType()->getScalarSizeInBits()));
     }
@@ -131,7 +135,9 @@ protected:
         auto sign_mask = 1ULL<<(W-1);
         return (from & mask) | ((from & sign_mask) ? ~mask : 0);
     }
-
+<%functions.each{ it.eachLine { %>
+    ${it}<%}%>
+<%}%>
 private:
     /****************************************************************************
      * start opcode definitions
@@ -212,7 +218,7 @@ private:
         bb = this->leave_blk;
         this->gen_instr_epilogue(bb);
         this->builder.CreateBr(bb);
-        return std::make_tuple(BRANCH, nullptr);
+        return std::make_tuple(ILLEGAL_INSTR, nullptr);
     }    
 };
 
@@ -247,19 +253,11 @@ vm_impl<ARCH>::gen_single_inst_behavior(virt_addr_t &pc, unsigned int &inst_cnt,
     auto *const data = (uint8_t *)&instr;
     if(this->core.has_mmu())
         paddr = this->core.virt2phys(pc);
-    //TODO: re-add page handling
-//    if ((pc.val & upper_bits) != ((pc.val + 2) & upper_bits)) { // we may cross a page boundary
-//        auto res = this->core.read(paddr, 2, data);
-//        if (res != iss::Ok) throw trap_access(TRAP_ID, pc.val);
-//        if ((instr & 0x3) == 0x3) { // this is a 32bit instruction
-//            res = this->core.read(this->core.v2p(pc + 2), 2, data + 2);
-//        }
-//    } else {
     auto res = this->core.read(paddr, 4, data);
-    if (res != iss::Ok) throw trap_access(TRAP_ID, pc.val);
+    if (res != iss::Ok) 
-//    }
+        return std::make_tuple(ILLEGAL_FETCH, nullptr);
-    if (instr == 0x0000006f || (instr&0xffff)==0xa001) throw simulation_stopped(0); // 'J 0' or 'C.J 0'
+    if (instr == 0x0000006f || (instr&0xffff)==0xa001)
-    // curr pc on stack
+        return std::make_tuple(JUMP_TO_SELF, nullptr);
     ++inst_cnt;
     uint32_t inst_index = instr_decoder.decode_instr(instr);
     compile_func f = nullptr;

gen_input/templates/tcc/CORENAME.cpp.gtl

@@ -38,7 +38,9 @@
 #include <util/logging.h>
 #include <sstream>
 #include <iss/instruction_decoder.h>
-
+<%def fcsr = registers.find {it.name=='FCSR'}
+if(fcsr != null) {%>
+#include <vm/fp_functions.h><%}%>
 #ifndef FMT_HEADER_ONLY
 #define FMT_HEADER_ONLY
 #endif
@@ -85,7 +87,12 @@ protected:
     using compile_func = compile_ret_t (this_class::*)(virt_addr_t &pc, code_word_t instr, tu_builder&);
 
     inline const char *name(size_t index){return traits::reg_aliases.at(index);}
+<%
+if(fcsr != null) {%>
+    inline const char *fname(size_t index){return index < 32?name(index+traits::F0):"illegal";}   
 
+    void add_prologue(tu_builder& tu) override;
+<%}%>
     void setup_module(std::string m) override {
         super::setup_module(m);
     }
@@ -98,8 +105,6 @@ protected:
 
     void gen_leave_trap(tu_builder& tu, unsigned lvl);
 
-    void gen_wait(tu_builder& tu, unsigned type);
-
     inline void gen_set_tval(tu_builder& tu, uint64_t new_tval);
 
     inline void gen_set_tval(tu_builder& tu, value new_tval);
@@ -133,6 +138,9 @@ protected:
         return (from & mask) | ((from & sign_mask) ? ~mask : 0);
     }
 
+<%functions.each{ it.eachLine { %>
+    ${it}<%}%>
+<%}%>
 private:
     /****************************************************************************
      * start opcode definitions
@@ -163,6 +171,7 @@ private:
         <%}%>if(this->disass_enabled){
             /* generate console output when executing the command */<%instr.disass.eachLine{%>
             ${it}<%}%>
+            tu("print_disass(core_ptr, {:#x}, \"{}\");", pc.val, mnemonic);
         }
         auto cur_pc_val = tu.constant(pc.val, traits::reg_bit_widths[traits::PC]);
         pc=pc+ ${instr.length/8};
@@ -187,11 +196,11 @@ private:
             tu("print_disass(core_ptr, {:#x}, \"{}\");", pc.val, std::string("illegal_instruction"));
         }
         pc = pc + ((instr & 3) == 3 ? 4 : 2);
-        gen_raise_trap(tu, 0, 2);     // illegal instruction trap
+        gen_raise_trap(tu, 0, static_cast<int32_t>(traits:: RV_CAUSE_ILLEGAL_INSTRUCTION));
         this->gen_set_tval(tu, instr);
         vm_impl::gen_sync(tu, iss::POST_SYNC, instr_descr.size());
         vm_impl::gen_trap_check(tu);
-        return BRANCH;
+        return ILLEGAL_INSTR;
     }
 };
 
@@ -224,19 +233,11 @@ vm_impl<ARCH>::gen_single_inst_behavior(virt_addr_t &pc, unsigned int &inst_cnt,
     phys_addr_t paddr(pc);
     if(this->core.has_mmu())
         paddr = this->core.virt2phys(pc);
-    //TODO: re-add page handling
-//    if ((pc.val & upper_bits) != ((pc.val + 2) & upper_bits)) { // we may cross a page boundary
-//        auto res = this->core.read(paddr, 2, data);
-//        if (res != iss::Ok) throw trap_access(TRAP_ID, pc.val);
-//        if ((insn & 0x3) == 0x3) { // this is a 32bit instruction
-//            res = this->core.read(this->core.v2p(pc + 2), 2, data + 2);
-//        }
-//    } else {
     auto res = this->core.read(paddr, 4, reinterpret_cast<uint8_t*>(&instr));
-    if (res != iss::Ok) throw trap_access(TRAP_ID, pc.val);
+    if (res != iss::Ok)
-//    }
+        return ILLEGAL_FETCH;
-    if (instr == 0x0000006f || (instr&0xffff)==0xa001) throw simulation_stopped(0); // 'J 0' or 'C.J 0'
+    if (instr == 0x0000006f || (instr&0xffff)==0xa001) 
-    // curr pc on stack
+        return JUMP_TO_SELF;
     ++inst_cnt;
     uint32_t inst_index = instr_decoder.decode_instr(instr);
     compile_func f = nullptr;
@@ -258,9 +259,6 @@ template <typename ARCH> void vm_impl<ARCH>::gen_leave_trap(tu_builder& tu, unsi
     tu.store(traits::LAST_BRANCH, tu.constant(static_cast<int>(UNKNOWN_JUMP), 32));
 }
 
-template <typename ARCH> void vm_impl<ARCH>::gen_wait(tu_builder& tu, unsigned type) {
-}
-
 template <typename ARCH> void vm_impl<ARCH>::gen_set_tval(tu_builder& tu, uint64_t new_tval) {
     tu(fmt::format("tval = {};", new_tval));
 }
@@ -275,6 +273,39 @@ template <typename ARCH> void vm_impl<ARCH>::gen_trap_behavior(tu_builder& tu) {
     tu.store(traits::LAST_BRANCH, tu.constant(static_cast<int>(UNKNOWN_JUMP),32));
     tu("return *next_pc;");
 }
+<%
+if(fcsr != null) {%>
+template <typename ARCH> void vm_impl<ARCH>::add_prologue(tu_builder& tu){
+    std::ostringstream os;
+    os << "uint32_t (*fget_flags)()=" << (uintptr_t)&fget_flags << ";\\n";
+    os << "uint32_t (*fadd_s)(uint32_t v1, uint32_t v2, uint8_t mode)=" << (uintptr_t)&fadd_s << ";\\n";
+    os << "uint32_t (*fsub_s)(uint32_t v1, uint32_t v2, uint8_t mode)=" << (uintptr_t)&fsub_s << ";\\n";
+    os << "uint32_t (*fmul_s)(uint32_t v1, uint32_t v2, uint8_t mode)=" << (uintptr_t)&fmul_s << ";\\n";
+    os << "uint32_t (*fdiv_s)(uint32_t v1, uint32_t v2, uint8_t mode)=" << (uintptr_t)&fdiv_s << ";\\n";
+    os << "uint32_t (*fsqrt_s)(uint32_t v1, uint8_t mode)=" << (uintptr_t)&fsqrt_s << ";\\n";
+    os << "uint32_t (*fcmp_s)(uint32_t v1, uint32_t v2, uint32_t op)=" << (uintptr_t)&fcmp_s << ";\\n";
+    os << "uint32_t (*fcvt_s)(uint32_t v1, uint32_t op, uint8_t mode)=" << (uintptr_t)&fcvt_s << ";\\n";
+    os << "uint32_t (*fmadd_s)(uint32_t v1, uint32_t v2, uint32_t v3, uint32_t op, uint8_t mode)=" << (uintptr_t)&fmadd_s << ";\\n";
+    os << "uint32_t (*fsel_s)(uint32_t v1, uint32_t v2, uint32_t op)=" << (uintptr_t)&fsel_s << ";\\n";
+    os << "uint32_t (*fclass_s)( uint32_t v1 )=" << (uintptr_t)&fclass_s << ";\\n";
+    os << "uint32_t (*fconv_d2f)(uint64_t v1, uint8_t mode)=" << (uintptr_t)&fconv_d2f << ";\\n";
+    os << "uint64_t (*fconv_f2d)(uint32_t v1, uint8_t mode)=" << (uintptr_t)&fconv_f2d << ";\\n";
+    os << "uint64_t (*fadd_d)(uint64_t v1, uint64_t v2, uint8_t mode)=" << (uintptr_t)&fadd_d << ";\\n";
+    os << "uint64_t (*fsub_d)(uint64_t v1, uint64_t v2, uint8_t mode)=" << (uintptr_t)&fsub_d << ";\\n";
+    os << "uint64_t (*fmul_d)(uint64_t v1, uint64_t v2, uint8_t mode)=" << (uintptr_t)&fmul_d << ";\\n";
+    os << "uint64_t (*fdiv_d)(uint64_t v1, uint64_t v2, uint8_t mode)=" << (uintptr_t)&fdiv_d << ";\\n";
+    os << "uint64_t (*fsqrt_d)(uint64_t v1, uint8_t mode)=" << (uintptr_t)&fsqrt_d << ";\\n";
+    os << "uint64_t (*fcmp_d)(uint64_t v1, uint64_t v2, uint32_t op)=" << (uintptr_t)&fcmp_d << ";\\n";
+    os << "uint64_t (*fcvt_d)(uint64_t v1, uint32_t op, uint8_t mode)=" << (uintptr_t)&fcvt_d << ";\\n";
+    os << "uint64_t (*fmadd_d)(uint64_t v1, uint64_t v2, uint64_t v3, uint32_t op, uint8_t mode)=" << (uintptr_t)&fmadd_d << ";\\n";
+    os << "uint64_t (*fsel_d)(uint64_t v1, uint64_t v2, uint32_t op)=" << (uintptr_t)&fsel_d << ";\\n";
+    os << "uint64_t (*fclass_d)(uint64_t v1  )=" << (uintptr_t)&fclass_d << ";\\n";
+    os << "uint64_t (*fcvt_32_64)(uint32_t v1, uint32_t op, uint8_t mode)=" << (uintptr_t)&fcvt_32_64 << ";\\n";
+    os << "uint32_t (*fcvt_64_32)(uint64_t v1, uint32_t op, uint8_t mode)=" << (uintptr_t)&fcvt_64_32 << ";\\n";
+    os << "uint32_t (*unbox_s)(uint64_t v)=" << (uintptr_t)&unbox_s << ";\\n";
+    tu.add_prologue(os.str());
+}
+<%}%>
 
 } // namespace ${coreDef.name.toLowerCase()}
 

src/main.cpp

@@ -69,7 +69,8 @@ int main(int argc, char* argv[]) {
         ("logfile,l", po::value<std::string>(), "Sets default log file.")
         ("disass,d", po::value<std::string>()->implicit_value(""), "Enables disassembly")
         ("gdb-port,g", po::value<unsigned>()->default_value(0), "enable gdb server and specify port to use")
-        ("instructions,i", po::value<uint64_t>()->default_value(std::numeric_limits<uint64_t>::max()), "max. number of instructions to simulate")
+        ("ilimit,i", po::value<uint64_t>()->default_value(std::numeric_limits<uint64_t>::max()), "max. number of instructions to simulate")
+        ("flimit", po::value<uint64_t>()->default_value(std::numeric_limits<uint64_t>::max()), "max. number of fetches to simulate")
         ("reset,r", po::value<std::string>(), "reset address")
         ("dump-ir", "dump the intermediate representation")
         ("elf,f", po::value<std::vector<std::string>>(), "ELF file(s) to load")
@@ -215,8 +216,15 @@ int main(int argc, char* argv[]) {
             start_address = str.find("0x") == 0 ? std::stoull(str.substr(2), nullptr, 16) : std::stoull(str, nullptr, 10);
         }
         vm->reset(start_address);
-        auto cycles = clim["instructions"].as<uint64_t>();
+        auto limit = clim["ilimit"].as<uint64_t>();
-        res = vm->start(cycles, dump);
+        auto cond = iss::finish_cond_e::JUMP_TO_SELF;
+        if(clim.count("flimit")) {
+            cond = cond | iss::finish_cond_e::FCOUNT_LIMIT;
+            limit = clim["flimit"].as<uint64_t>();
+        } else {
+            cond = cond | iss::finish_cond_e::ICOUNT_LIMIT;
+        }
+        res = vm->start(limit, dump, cond);
 
         auto instr_if = vm->get_arch()->get_instrumentation_if();
         // this assumes a single input file

src/vm/asmjit/vm_tgc5c.cpp

@@ -88,7 +88,6 @@ protected:
     using super::write_reg_to_mem;
     using super::gen_read_mem;
     using super::gen_write_mem;
-    using super::gen_wait;
     using super::gen_leave;
     using super::gen_sync;
    
@@ -113,6 +112,7 @@ protected:
         auto sign_mask = 1ULL<<(W-1);
         return (from & mask) | ((from & sign_mask) ? ~mask : 0);
     }
+
 private:
     /****************************************************************************
      * start opcode definitions
@@ -500,6 +500,7 @@ private:
                 (gen_operation(cc, band, (gen_operation(cc, add, load_reg_from_mem(jh, traits::X0 + rs1), (int16_t)sext<12>(imm))
                 ), addr_mask)
                 ), 32, true);
+            {
             auto label_merge = cc.newLabel();
             cmp(cc, gen_operation(cc, urem, new_pc, static_cast<uint32_t>(traits::INSTR_ALIGNMENT))
             ,0);
@@ -521,6 +522,7 @@ private:
                     mov(cc, get_ptr_for(jh, traits::LAST_BRANCH), static_cast<int>(UNKNOWN_JUMP));
                 }
             cc.bind(label_merge);
+            }
         }
         auto returnValue = BRANCH;
         
@@ -566,6 +568,7 @@ private:
             gen_raise(jh, 0, static_cast<int32_t>(traits::RV_CAUSE_ILLEGAL_INSTRUCTION));
         }
         else{
+            {
             auto label_merge = cc.newLabel();
             cmp(cc, gen_operation(cc, eq, load_reg_from_mem(jh, traits::X0 + rs1), load_reg_from_mem(jh, traits::X0 + rs2))
             ,0);
@@ -583,6 +586,7 @@ private:
                 }
             }
             cc.bind(label_merge);
+            }
         }
         auto returnValue = BRANCH;
         
@@ -628,6 +632,7 @@ private:
             gen_raise(jh, 0, static_cast<int32_t>(traits::RV_CAUSE_ILLEGAL_INSTRUCTION));
         }
         else{
+            {
             auto label_merge = cc.newLabel();
             cmp(cc, gen_operation(cc, ne, load_reg_from_mem(jh, traits::X0 + rs1), load_reg_from_mem(jh, traits::X0 + rs2))
             ,0);
@@ -645,6 +650,7 @@ private:
                 }
             }
             cc.bind(label_merge);
+            }
         }
         auto returnValue = BRANCH;
         
@@ -690,6 +696,7 @@ private:
             gen_raise(jh, 0, static_cast<int32_t>(traits::RV_CAUSE_ILLEGAL_INSTRUCTION));
         }
         else{
+            {
             auto label_merge = cc.newLabel();
             cmp(cc, gen_operation(cc, lt, gen_ext(cc, 
                 load_reg_from_mem(jh, traits::X0 + rs1), 32, false), gen_ext(cc, 
@@ -709,6 +716,7 @@ private:
                 }
             }
             cc.bind(label_merge);
+            }
         }
         auto returnValue = BRANCH;
         
@@ -754,6 +762,7 @@ private:
             gen_raise(jh, 0, static_cast<int32_t>(traits::RV_CAUSE_ILLEGAL_INSTRUCTION));
         }
         else{
+            {
             auto label_merge = cc.newLabel();
             cmp(cc, gen_operation(cc, gte, gen_ext(cc, 
                 load_reg_from_mem(jh, traits::X0 + rs1), 32, false), gen_ext(cc, 
@@ -773,6 +782,7 @@ private:
                 }
             }
             cc.bind(label_merge);
+            }
         }
         auto returnValue = BRANCH;
         
@@ -818,6 +828,7 @@ private:
             gen_raise(jh, 0, static_cast<int32_t>(traits::RV_CAUSE_ILLEGAL_INSTRUCTION));
         }
         else{
+            {
             auto label_merge = cc.newLabel();
             cmp(cc, gen_operation(cc, ltu, load_reg_from_mem(jh, traits::X0 + rs1), load_reg_from_mem(jh, traits::X0 + rs2))
             ,0);
@@ -835,6 +846,7 @@ private:
                 }
             }
             cc.bind(label_merge);
+            }
         }
         auto returnValue = BRANCH;
         
@@ -880,6 +892,7 @@ private:
             gen_raise(jh, 0, static_cast<int32_t>(traits::RV_CAUSE_ILLEGAL_INSTRUCTION));
         }
         else{
+            {
             auto label_merge = cc.newLabel();
             cmp(cc, gen_operation(cc, gteu, load_reg_from_mem(jh, traits::X0 + rs1), load_reg_from_mem(jh, traits::X0 + rs2))
             ,0);
@@ -897,6 +910,7 @@ private:
                 }
             }
             cc.bind(label_merge);
+            }
         }
         auto returnValue = BRANCH;
         
@@ -2364,7 +2378,7 @@ private:
         if(this->disass_enabled){
             /* generate disass */
             
-            //This disass is not yet implemented
+            //No disass specified, using instruction name
             std::string mnemonic = "ecall";
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -2401,7 +2415,7 @@ private:
         if(this->disass_enabled){
             /* generate disass */
             
-            //This disass is not yet implemented
+            //No disass specified, using instruction name
             std::string mnemonic = "ebreak";
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -2438,7 +2452,7 @@ private:
         if(this->disass_enabled){
             /* generate disass */
             
-            //This disass is not yet implemented
+            //No disass specified, using instruction name
             std::string mnemonic = "mret";
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -2475,7 +2489,7 @@ private:
         if(this->disass_enabled){
             /* generate disass */
             
-            //This disass is not yet implemented
+            //No disass specified, using instruction name
             std::string mnemonic = "wfi";
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -2497,7 +2511,10 @@ private:
         gen_instr_prologue(jh);
         cc.comment("//behavior:");
         /*generate behavior*/
-        gen_wait(jh, 1);
+        InvokeNode* call_wait;
+        jh.cc.comment("//call_wait");
+        jh.cc.invoke(&call_wait, &wait, FuncSignature::build<void, int32_t>());
+        setArg(call_wait, 0, 1);
         auto returnValue = CONT;
         
         gen_sync(jh, POST_SYNC, 41);
@@ -3116,6 +3133,7 @@ private:
             auto divisor = gen_ext(cc, 
                 load_reg_from_mem(jh, traits::X0 + rs2), 32, true);
             if(rd!=0){
+                {
                 auto label_merge = cc.newLabel();
                 cmp(cc, gen_operation(cc, ne, divisor, 0)
                 ,0);
@@ -3123,6 +3141,7 @@ private:
                 cc.je(label_else);
                 {
                     auto MMIN = ((uint32_t)1)<<(static_cast<uint32_t>(traits::XLEN)-1);
+                    {
                     auto label_merge = cc.newLabel();
                     cmp(cc, gen_operation(cc, land, gen_operation(cc, eq, load_reg_from_mem(jh, traits::X0 + rs1), MMIN)
                     , gen_operation(cc, eq, divisor, - 1)
@@ -3143,6 +3162,7 @@ private:
                                       ), 32, true));
                         }
                     cc.bind(label_merge);
+                    }
                 }
                 cc.jmp(label_merge);
                 cc.bind(label_else);
@@ -3151,6 +3171,7 @@ private:
                               (uint32_t)- 1);
                     }
                 cc.bind(label_merge);
+                }
             }
         }
         auto returnValue = CONT;
@@ -3196,6 +3217,7 @@ private:
             gen_raise(jh, 0, static_cast<int32_t>(traits::RV_CAUSE_ILLEGAL_INSTRUCTION));
         }
         else{
+            {
             auto label_merge = cc.newLabel();
             cmp(cc, gen_operation(cc, ne, load_reg_from_mem(jh, traits::X0 + rs2), 0)
             ,0);
@@ -3217,6 +3239,7 @@ private:
                     }
                 }
             cc.bind(label_merge);
+            }
         }
         auto returnValue = CONT;
         
@@ -3261,6 +3284,7 @@ private:
             gen_raise(jh, 0, static_cast<int32_t>(traits::RV_CAUSE_ILLEGAL_INSTRUCTION));
         }
         else{
+            {
             auto label_merge = cc.newLabel();
             cmp(cc, gen_operation(cc, ne, load_reg_from_mem(jh, traits::X0 + rs2), 0)
             ,0);
@@ -3268,6 +3292,7 @@ private:
             cc.je(label_else);
             {
                 auto MMIN = (uint32_t)1<<(static_cast<uint32_t>(traits::XLEN)-1);
+                {
                 auto label_merge = cc.newLabel();
                 cmp(cc, gen_operation(cc, land, gen_operation(cc, eq, load_reg_from_mem(jh, traits::X0 + rs1), MMIN)
                 , gen_operation(cc, eq, gen_ext(cc, 
@@ -3296,6 +3321,7 @@ private:
                         }
                     }
                 cc.bind(label_merge);
+                }
             }
             cc.jmp(label_merge);
             cc.bind(label_else);
@@ -3306,6 +3332,7 @@ private:
                     }
                 }
             cc.bind(label_merge);
+            }
         }
         auto returnValue = CONT;
         
@@ -3350,6 +3377,7 @@ private:
             gen_raise(jh, 0, static_cast<int32_t>(traits::RV_CAUSE_ILLEGAL_INSTRUCTION));
         }
         else{
+            {
             auto label_merge = cc.newLabel();
             cmp(cc, gen_operation(cc, ne, load_reg_from_mem(jh, traits::X0 + rs2), 0)
             ,0);
@@ -3371,6 +3399,7 @@ private:
                     }
                 }
             cc.bind(label_merge);
+            }
         }
         auto returnValue = CONT;
         
@@ -3388,7 +3417,7 @@ private:
             /* generate disass */
             
             auto mnemonic = fmt::format(
-                "{mnemonic:10} {rd}, {imm:#05x}", fmt::arg("mnemonic", "c__addi4spn"),
+                "{mnemonic:10} {rd}, {imm:#05x}", fmt::arg("mnemonic", "c.addi4spn"),
                 fmt::arg("rd", name(8+rd)), fmt::arg("imm", imm));
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -3436,7 +3465,7 @@ private:
             /* generate disass */
             
             auto mnemonic = fmt::format(
-                "{mnemonic:10} {rd}, {uimm:#05x}({rs1})", fmt::arg("mnemonic", "c__lw"),
+                "{mnemonic:10} {rd}, {uimm:#05x}({rs1})", fmt::arg("mnemonic", "c.lw"),
                 fmt::arg("rd", name(8+rd)), fmt::arg("uimm", uimm), fmt::arg("rs1", name(8+rs1)));
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -3482,7 +3511,7 @@ private:
             /* generate disass */
             
             auto mnemonic = fmt::format(
-                "{mnemonic:10} {rs2}, {uimm:#05x}({rs1})", fmt::arg("mnemonic", "c__sw"),
+                "{mnemonic:10} {rs2}, {uimm:#05x}({rs1})", fmt::arg("mnemonic", "c.sw"),
                 fmt::arg("rs2", name(8+rs2)), fmt::arg("uimm", uimm), fmt::arg("rs1", name(8+rs1)));
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -3525,7 +3554,7 @@ private:
             /* generate disass */
             
             auto mnemonic = fmt::format(
-                "{mnemonic:10} {rs1}, {imm:#05x}", fmt::arg("mnemonic", "c__addi"),
+                "{mnemonic:10} {rs1}, {imm:#05x}", fmt::arg("mnemonic", "c.addi"),
                 fmt::arg("rs1", name(rs1)), fmt::arg("imm", imm));
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -3572,8 +3601,8 @@ private:
         if(this->disass_enabled){
             /* generate disass */
             
-            //This disass is not yet implemented
+            //No disass specified, using instruction name
-            std::string mnemonic = "c__nop";
+            std::string mnemonic = "c.nop";
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
             jh.disass_collection.push_back(mnemonic_ptr);
@@ -3609,7 +3638,7 @@ private:
             /* generate disass */
             
             auto mnemonic = fmt::format(
-                "{mnemonic:10} {imm:#05x}", fmt::arg("mnemonic", "c__jal"),
+                "{mnemonic:10} {imm:#05x}", fmt::arg("mnemonic", "c.jal"),
                 fmt::arg("imm", imm));
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -3653,7 +3682,7 @@ private:
             /* generate disass */
             
             auto mnemonic = fmt::format(
-                "{mnemonic:10} {rd}, {imm:#05x}", fmt::arg("mnemonic", "c__li"),
+                "{mnemonic:10} {rd}, {imm:#05x}", fmt::arg("mnemonic", "c.li"),
                 fmt::arg("rd", name(rd)), fmt::arg("imm", imm));
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -3700,7 +3729,7 @@ private:
             /* generate disass */
             
             auto mnemonic = fmt::format(
-                "{mnemonic:10} {rd}, {imm:#05x}", fmt::arg("mnemonic", "c__lui"),
+                "{mnemonic:10} {rd}, {imm:#05x}", fmt::arg("mnemonic", "c.lui"),
                 fmt::arg("rd", name(rd)), fmt::arg("imm", imm));
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -3744,7 +3773,7 @@ private:
             /* generate disass */
             
             auto mnemonic = fmt::format(
-                "{mnemonic:10} {nzimm:#05x}", fmt::arg("mnemonic", "c__addi16sp"),
+                "{mnemonic:10} {nzimm:#05x}", fmt::arg("mnemonic", "c.addi16sp"),
                 fmt::arg("nzimm", nzimm));
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -3789,8 +3818,8 @@ private:
         if(this->disass_enabled){
             /* generate disass */
             
-            //This disass is not yet implemented
+            //No disass specified, using instruction name
-            std::string mnemonic = "__reserved_clui";
+            std::string mnemonic = ".reserved_clui";
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
             jh.disass_collection.push_back(mnemonic_ptr);
@@ -3828,7 +3857,7 @@ private:
             /* generate disass */
             
             auto mnemonic = fmt::format(
-                "{mnemonic:10} {rs1}, {shamt}", fmt::arg("mnemonic", "c__srli"),
+                "{mnemonic:10} {rs1}, {shamt}", fmt::arg("mnemonic", "c.srli"),
                 fmt::arg("rs1", name(8+rs1)), fmt::arg("shamt", shamt));
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -3869,7 +3898,7 @@ private:
             /* generate disass */
             
             auto mnemonic = fmt::format(
-                "{mnemonic:10} {rs1}, {shamt}", fmt::arg("mnemonic", "c__srai"),
+                "{mnemonic:10} {rs1}, {shamt}", fmt::arg("mnemonic", "c.srai"),
                 fmt::arg("rs1", name(8+rs1)), fmt::arg("shamt", shamt));
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -3923,7 +3952,7 @@ private:
             /* generate disass */
             
             auto mnemonic = fmt::format(
-                "{mnemonic:10} {rs1}, {imm:#05x}", fmt::arg("mnemonic", "c__andi"),
+                "{mnemonic:10} {rs1}, {imm:#05x}", fmt::arg("mnemonic", "c.andi"),
                 fmt::arg("rs1", name(8+rs1)), fmt::arg("imm", imm));
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -3965,7 +3994,7 @@ private:
             /* generate disass */
             
             auto mnemonic = fmt::format(
-                "{mnemonic:10} {rd}, {rs2}", fmt::arg("mnemonic", "c__sub"),
+                "{mnemonic:10} {rd}, {rs2}", fmt::arg("mnemonic", "c.sub"),
                 fmt::arg("rd", name(8+rd)), fmt::arg("rs2", name(8+rs2)));
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -4007,7 +4036,7 @@ private:
             /* generate disass */
             
             auto mnemonic = fmt::format(
-                "{mnemonic:10} {rd}, {rs2}", fmt::arg("mnemonic", "c__xor"),
+                "{mnemonic:10} {rd}, {rs2}", fmt::arg("mnemonic", "c.xor"),
                 fmt::arg("rd", name(8+rd)), fmt::arg("rs2", name(8+rs2)));
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -4048,7 +4077,7 @@ private:
             /* generate disass */
             
             auto mnemonic = fmt::format(
-                "{mnemonic:10} {rd}, {rs2}", fmt::arg("mnemonic", "c__or"),
+                "{mnemonic:10} {rd}, {rs2}", fmt::arg("mnemonic", "c.or"),
                 fmt::arg("rd", name(8+rd)), fmt::arg("rs2", name(8+rs2)));
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -4089,7 +4118,7 @@ private:
             /* generate disass */
             
             auto mnemonic = fmt::format(
-                "{mnemonic:10} {rd}, {rs2}", fmt::arg("mnemonic", "c__and"),
+                "{mnemonic:10} {rd}, {rs2}", fmt::arg("mnemonic", "c.and"),
                 fmt::arg("rd", name(8+rd)), fmt::arg("rs2", name(8+rs2)));
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -4129,7 +4158,7 @@ private:
             /* generate disass */
             
             auto mnemonic = fmt::format(
-                "{mnemonic:10} {imm:#05x}", fmt::arg("mnemonic", "c__j"),
+                "{mnemonic:10} {imm:#05x}", fmt::arg("mnemonic", "c.j"),
                 fmt::arg("imm", imm));
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -4171,7 +4200,7 @@ private:
             /* generate disass */
             
             auto mnemonic = fmt::format(
-                "{mnemonic:10} {rs1}, {imm:#05x}", fmt::arg("mnemonic", "c__beqz"),
+                "{mnemonic:10} {rs1}, {imm:#05x}", fmt::arg("mnemonic", "c.beqz"),
                 fmt::arg("rs1", name(8+rs1)), fmt::arg("imm", imm));
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -4194,6 +4223,7 @@ private:
         cc.comment("//behavior:");
         /*generate behavior*/
         mov(jh.cc, get_ptr_for(jh, traits::LAST_BRANCH), static_cast<int>(NO_JUMP));
+        {
         auto label_merge = cc.newLabel();
         cmp(cc, gen_operation(cc, eq, load_reg_from_mem(jh, traits::X0 + rs1+8), 0)
         ,0);
@@ -4204,6 +4234,7 @@ private:
             mov(cc, get_ptr_for(jh, traits::LAST_BRANCH), static_cast<int>(KNOWN_JUMP));
         }
         cc.bind(label_merge);
+        }
         auto returnValue = BRANCH;
         
         gen_sync(jh, POST_SYNC, 75);
@@ -4220,7 +4251,7 @@ private:
             /* generate disass */
             
             auto mnemonic = fmt::format(
-                "{mnemonic:10} {rs1}, {imm:#05x}", fmt::arg("mnemonic", "c__bnez"),
+                "{mnemonic:10} {rs1}, {imm:#05x}", fmt::arg("mnemonic", "c.bnez"),
                 fmt::arg("rs1", name(8+rs1)), fmt::arg("imm", imm));
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -4243,6 +4274,7 @@ private:
         cc.comment("//behavior:");
         /*generate behavior*/
         mov(jh.cc, get_ptr_for(jh, traits::LAST_BRANCH), static_cast<int>(NO_JUMP));
+        {
         auto label_merge = cc.newLabel();
         cmp(cc, gen_operation(cc, ne, load_reg_from_mem(jh, traits::X0 + rs1+8), 0)
         ,0);
@@ -4253,6 +4285,7 @@ private:
             mov(cc, get_ptr_for(jh, traits::LAST_BRANCH), static_cast<int>(KNOWN_JUMP));
         }
         cc.bind(label_merge);
+        }
         auto returnValue = BRANCH;
         
         gen_sync(jh, POST_SYNC, 76);
@@ -4269,7 +4302,7 @@ private:
             /* generate disass */
             
             auto mnemonic = fmt::format(
-                "{mnemonic:10} {rs1}, {nzuimm}", fmt::arg("mnemonic", "c__slli"),
+                "{mnemonic:10} {rs1}, {nzuimm}", fmt::arg("mnemonic", "c.slli"),
                 fmt::arg("rs1", name(rs1)), fmt::arg("nzuimm", nzuimm));
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -4317,7 +4350,7 @@ private:
             /* generate disass */
             
             auto mnemonic = fmt::format(
-                "{mnemonic:10} {rd}, sp, {uimm:#05x}", fmt::arg("mnemonic", "c__lwsp"),
+                "{mnemonic:10} {rd}, sp, {uimm:#05x}", fmt::arg("mnemonic", "c.lwsp"),
                 fmt::arg("rd", name(rd)), fmt::arg("uimm", uimm));
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -4367,7 +4400,7 @@ private:
             /* generate disass */
             
             auto mnemonic = fmt::format(
-                "{mnemonic:10} {rd}, {rs2}", fmt::arg("mnemonic", "c__mv"),
+                "{mnemonic:10} {rd}, {rs2}", fmt::arg("mnemonic", "c.mv"),
                 fmt::arg("rd", name(rd)), fmt::arg("rs2", name(rs2)));
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -4413,7 +4446,7 @@ private:
             /* generate disass */
             
             auto mnemonic = fmt::format(
-                "{mnemonic:10} {rs1}", fmt::arg("mnemonic", "c__jr"),
+                "{mnemonic:10} {rs1}", fmt::arg("mnemonic", "c.jr"),
                 fmt::arg("rs1", name(rs1)));
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -4459,8 +4492,8 @@ private:
         if(this->disass_enabled){
             /* generate disass */
             
-            //This disass is not yet implemented
+            //No disass specified, using instruction name
-            std::string mnemonic = "__reserved_cmv";
+            std::string mnemonic = ".reserved_cmv";
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
             jh.disass_collection.push_back(mnemonic_ptr);
@@ -4498,7 +4531,7 @@ private:
             /* generate disass */
             
             auto mnemonic = fmt::format(
-                "{mnemonic:10} {rd}, {rs2}", fmt::arg("mnemonic", "c__add"),
+                "{mnemonic:10} {rd}, {rs2}", fmt::arg("mnemonic", "c.add"),
                 fmt::arg("rd", name(rd)), fmt::arg("rs2", name(rs2)));
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -4546,7 +4579,7 @@ private:
             /* generate disass */
             
             auto mnemonic = fmt::format(
-                "{mnemonic:10} {rs1}", fmt::arg("mnemonic", "c__jalr"),
+                "{mnemonic:10} {rs1}", fmt::arg("mnemonic", "c.jalr"),
                 fmt::arg("rs1", name(rs1)));
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -4595,8 +4628,8 @@ private:
         if(this->disass_enabled){
             /* generate disass */
             
-            //This disass is not yet implemented
+            //No disass specified, using instruction name
-            std::string mnemonic = "c__ebreak";
+            std::string mnemonic = "c.ebreak";
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
             jh.disass_collection.push_back(mnemonic_ptr);
@@ -4634,7 +4667,7 @@ private:
             /* generate disass */
             
             auto mnemonic = fmt::format(
-                "{mnemonic:10} {rs2}, {uimm:#05x}(sp)", fmt::arg("mnemonic", "c__swsp"),
+                "{mnemonic:10} {rs2}, {uimm:#05x}(sp)", fmt::arg("mnemonic", "c.swsp"),
                 fmt::arg("rs2", name(rs2)), fmt::arg("uimm", uimm));
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -4679,7 +4712,7 @@ private:
         if(this->disass_enabled){
             /* generate disass */
             
-            //This disass is not yet implemented
+            //No disass specified, using instruction name
             std::string mnemonic = "dii";
             InvokeNode* call_print_disass;
             char* mnemonic_ptr = strdup(mnemonic.c_str());
@@ -4735,7 +4768,7 @@ private:
         gen_raise(jh, 0, 2);
         gen_sync(jh, POST_SYNC, instr_descr.size());
         gen_instr_epilogue(jh);
-        return BRANCH;
+        return ILLEGAL_INSTR;
     }
 };
 
@@ -4764,9 +4797,9 @@ continuation_e vm_impl<ARCH>::gen_single_inst_behavior(virt_addr_t &pc, unsigned
         paddr = this->core.virt2phys(pc);
     auto res = this->core.read(paddr, 4, data);
     if (res != iss::Ok)
-        throw trap_access(TRAP_ID, pc.val);
+        return ILLEGAL_FETCH;
     if (instr == 0x0000006f || (instr&0xffff)==0xa001)
-        throw simulation_stopped(0); // 'J 0' or 'C.J 0'
+        return JUMP_TO_SELF;
     ++inst_cnt;
     uint32_t inst_index = instr_decoder.decode_instr(instr);
     compile_func f = nullptr;

src/vm/interp/vm_tgc5c.cpp

@@ -343,7 +343,7 @@ typename vm_base<ARCH>::virt_addr_t vm_impl<ARCH>::execute_inst(finish_cond_e co
             uint32_t inst_index = instr_decoder.decode_instr(instr);
             opcode_e inst_id = arch::traits<ARCH>::opcode_e::MAX_OPCODE;;
             if(inst_index <instr_descr.size())
-                inst_id = instr_descr.at(instr_decoder.decode_instr(instr)).op;
+                inst_id = instr_descr[inst_index].op;
 
             // pre execution stuff
             this->core.reg.last_branch = 0;
@@ -1458,7 +1458,9 @@ typename vm_base<ARCH>::virt_addr_t vm_impl<ARCH>::execute_inst(finish_cond_e co
                 case arch::traits<ARCH>::opcode_e::ECALL: {
                     if(this->disass_enabled){
                         /* generate console output when executing the command */
-                        this->core.disass_output(pc.val, "ecall");
+                        //No disass specified, using instruction name
+                        std::string mnemonic = "ecall";
+                        this->core.disass_output(pc.val, mnemonic);
                     }
                     // used registers// calculate next pc value
                     *NEXT_PC = *PC + 4;
@@ -1471,7 +1473,9 @@ typename vm_base<ARCH>::virt_addr_t vm_impl<ARCH>::execute_inst(finish_cond_e co
                 case arch::traits<ARCH>::opcode_e::EBREAK: {
                     if(this->disass_enabled){
                         /* generate console output when executing the command */
-                        this->core.disass_output(pc.val, "ebreak");
+                        //No disass specified, using instruction name
+                        std::string mnemonic = "ebreak";
+                        this->core.disass_output(pc.val, mnemonic);
                     }
                     // used registers// calculate next pc value
                     *NEXT_PC = *PC + 4;
@@ -1484,7 +1488,9 @@ typename vm_base<ARCH>::virt_addr_t vm_impl<ARCH>::execute_inst(finish_cond_e co
                 case arch::traits<ARCH>::opcode_e::MRET: {
                     if(this->disass_enabled){
                         /* generate console output when executing the command */
-                        this->core.disass_output(pc.val, "mret");
+                        //No disass specified, using instruction name
+                        std::string mnemonic = "mret";
+                        this->core.disass_output(pc.val, mnemonic);
                     }
                     // used registers// calculate next pc value
                     *NEXT_PC = *PC + 4;
@@ -1497,7 +1503,9 @@ typename vm_base<ARCH>::virt_addr_t vm_impl<ARCH>::execute_inst(finish_cond_e co
                 case arch::traits<ARCH>::opcode_e::WFI: {
                     if(this->disass_enabled){
                         /* generate console output when executing the command */
-                        this->core.disass_output(pc.val, "wfi");
+                        //No disass specified, using instruction name
+                        std::string mnemonic = "wfi";
+                        this->core.disass_output(pc.val, mnemonic);
                     }
                     // used registers// calculate next pc value
                     *NEXT_PC = *PC + 4;
@@ -1721,7 +1729,7 @@ typename vm_base<ARCH>::virt_addr_t vm_impl<ARCH>::execute_inst(finish_cond_e co
                     if(this->disass_enabled){
                         /* generate console output when executing the command */
                         auto mnemonic = fmt::format(
-                            "{mnemonic:10} {rs1}, {rd}, {imm}", fmt::arg("mnemonic", "fence.i"),
+                            "{mnemonic:10} {rs1}, {rd}, {imm}", fmt::arg("mnemonic", "fence_i"),
                             fmt::arg("rs1", name(rs1)), fmt::arg("rd", name(rd)), fmt::arg("imm", imm));
                         this->core.disass_output(pc.val, mnemonic);
                     }
@@ -2095,7 +2103,9 @@ typename vm_base<ARCH>::virt_addr_t vm_impl<ARCH>::execute_inst(finish_cond_e co
                     uint8_t nzimm = ((bit_sub<2,5>(instr)) | (bit_sub<12,1>(instr) << 5));
                     if(this->disass_enabled){
                         /* generate console output when executing the command */
-                        this->core.disass_output(pc.val, "c.nop");
+                        //No disass specified, using instruction name
+                        std::string mnemonic = "c.nop";
+                        this->core.disass_output(pc.val, mnemonic);
                     }
                     // used registers// calculate next pc value
                     *NEXT_PC = *PC + 2;
@@ -2201,7 +2211,9 @@ typename vm_base<ARCH>::virt_addr_t vm_impl<ARCH>::execute_inst(finish_cond_e co
                     uint8_t rd = ((bit_sub<7,5>(instr)));
                     if(this->disass_enabled){
                         /* generate console output when executing the command */
-                        this->core.disass_output(pc.val, ".reserved_clui");
+                        //No disass specified, using instruction name
+                        std::string mnemonic = ".reserved_clui";
+                        this->core.disass_output(pc.val, mnemonic);
                     }
                     // used registers// calculate next pc value
                     *NEXT_PC = *PC + 2;
@@ -2520,7 +2532,9 @@ typename vm_base<ARCH>::virt_addr_t vm_impl<ARCH>::execute_inst(finish_cond_e co
                 case arch::traits<ARCH>::opcode_e::__reserved_cmv: {
                     if(this->disass_enabled){
                         /* generate console output when executing the command */
-                        this->core.disass_output(pc.val, ".reserved_cmv");
+                        //No disass specified, using instruction name
+                        std::string mnemonic = ".reserved_cmv";
+                        this->core.disass_output(pc.val, mnemonic);
                     }
                     // used registers// calculate next pc value
                     *NEXT_PC = *PC + 2;
@@ -2586,7 +2600,9 @@ typename vm_base<ARCH>::virt_addr_t vm_impl<ARCH>::execute_inst(finish_cond_e co
                 case arch::traits<ARCH>::opcode_e::C__EBREAK: {
                     if(this->disass_enabled){
                         /* generate console output when executing the command */
-                        this->core.disass_output(pc.val, "c.ebreak");
+                        //No disass specified, using instruction name
+                        std::string mnemonic = "c.ebreak";
+                        this->core.disass_output(pc.val, mnemonic);
                     }
                     // used registers// calculate next pc value
                     *NEXT_PC = *PC + 2;
@@ -2625,7 +2641,9 @@ typename vm_base<ARCH>::virt_addr_t vm_impl<ARCH>::execute_inst(finish_cond_e co
                 case arch::traits<ARCH>::opcode_e::DII: {
                     if(this->disass_enabled){
                         /* generate console output when executing the command */
-                        this->core.disass_output(pc.val, "dii");
+                        //No disass specified, using instruction name
+                        std::string mnemonic = "dii";
+                        this->core.disass_output(pc.val, mnemonic);
                     }
                     // used registers// calculate next pc value
                     *NEXT_PC = *PC + 2;