diff --git a/gen_input/templates/asmjit/CORENAME.cpp.gtl b/gen_input/templates/asmjit/CORENAME.cpp.gtl
index 5749f29..9ad7de4 100644
--- a/gen_input/templates/asmjit/CORENAME.cpp.gtl
+++ b/gen_input/templates/asmjit/CORENAME.cpp.gtl
@@ -91,7 +91,6 @@ protected:
     using super::gen_wait;
     using super::gen_leave;
     using super::gen_sync;
-    using super::gen_set_tval;
    
     using this_class = vm_impl<ARCH>;
     using compile_func = continuation_e (this_class::*)(virt_addr_t&, code_word_t, jit_holder&);
@@ -104,6 +103,8 @@ protected:
     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);
+    template <typename T, typename = std::enable_if_t<std::is_integral_v<T>>> void gen_set_tval(jit_holder& jh, T new_tval) ;
+    void gen_set_tval(jit_holder& jh, x86_reg_t _new_tval) ;
 
     template<unsigned W, typename U, typename S = typename std::make_signed<U>::type>
     inline S sext(U from) {
@@ -260,7 +261,7 @@ template <typename ARCH>
 void vm_impl<ARCH>::gen_block_prologue(jit_holder& jh){
     jh.pc = load_reg_from_mem_Gp(jh, traits::PC);
     jh.next_pc = load_reg_from_mem_Gp(jh, traits::NEXT_PC);
-    jh.tval = get_reg_Gp(jh.cc, 64, false);
+    jh.globals["tval"] = get_reg_Gp(jh.cc, 64, false);
 }
 template <typename ARCH>
 void vm_impl<ARCH>::gen_block_epilogue(jit_holder& jh){
@@ -283,7 +284,7 @@ void vm_impl<ARCH>::gen_block_epilogue(jit_holder& jh){
     call_enter_trap->setArg(0, jh.arch_if_ptr);
     call_enter_trap->setArg(1, current_trap_state);
     call_enter_trap->setArg(2, current_pc);
-    call_enter_trap->setArg(3, jh.tval);
+    call_enter_trap->setArg(3, jh.globals["tval"]);
 
     x86_reg_t current_next_pc = get_reg_for(cc, traits::NEXT_PC);
     mov(cc, current_next_pc, get_ptr_for(jh, traits::NEXT_PC));
@@ -300,6 +301,22 @@ inline void vm_impl<ARCH>::gen_raise(jit_holder& jh, uint16_t trap_id, uint16_t
     mov(cc, tmp1, 0x80ULL << 24 | (cause << 16) | trap_id);
     mov(cc, get_ptr_for(jh, traits::TRAP_STATE), tmp1);
 }
+template <typename ARCH>
+template <typename T, typename>
+void vm_impl<ARCH>::gen_set_tval(jit_holder& jh, T new_tval) {
+        mov(jh.cc, jh.globals["tval"], new_tval);
+    }
+template <typename ARCH>
+void vm_impl<ARCH>::gen_set_tval(jit_holder& jh, x86_reg_t _new_tval) {
+    if(std::holds_alternative<x86::Gp>(_new_tval)) {
+        x86::Gp new_tval = std::get<x86::Gp>(_new_tval);
+        if(new_tval.size() < 8)
+            new_tval = gen_ext_Gp(jh.cc, new_tval, 64, false);
+        mov(jh.cc, jh.globals["tval"], new_tval);
+    } else {
+        throw std::runtime_error("Variant not supported in gen_set_tval");
+    }
+}
 
 } // namespace tgc5c
 
diff --git a/src/vm/asmjit/vm_tgc5c.cpp b/src/vm/asmjit/vm_tgc5c.cpp
index 859c65c..f9d774d 100644
--- a/src/vm/asmjit/vm_tgc5c.cpp
+++ b/src/vm/asmjit/vm_tgc5c.cpp
@@ -91,7 +91,6 @@ protected:
     using super::gen_wait;
     using super::gen_leave;
     using super::gen_sync;
-    using super::gen_set_tval;
    
     using this_class = vm_impl<ARCH>;
     using compile_func = continuation_e (this_class::*)(virt_addr_t&, code_word_t, jit_holder&);
@@ -104,6 +103,8 @@ protected:
     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);
+    template <typename T, typename = std::enable_if_t<std::is_integral_v<T>>> void gen_set_tval(jit_holder& jh, T new_tval) ;
+    void gen_set_tval(jit_holder& jh, x86_reg_t _new_tval) ;
 
     template<unsigned W, typename U, typename S = typename std::make_signed<U>::type>
     inline S sext(U from) {
@@ -4800,7 +4801,7 @@ template <typename ARCH>
 void vm_impl<ARCH>::gen_block_prologue(jit_holder& jh){
     jh.pc = load_reg_from_mem_Gp(jh, traits::PC);
     jh.next_pc = load_reg_from_mem_Gp(jh, traits::NEXT_PC);
-    jh.tval = get_reg_Gp(jh.cc, 64, false);
+    jh.globals["tval"] = get_reg_Gp(jh.cc, 64, false);
 }
 template <typename ARCH>
 void vm_impl<ARCH>::gen_block_epilogue(jit_holder& jh){
@@ -4823,7 +4824,7 @@ void vm_impl<ARCH>::gen_block_epilogue(jit_holder& jh){
     call_enter_trap->setArg(0, jh.arch_if_ptr);
     call_enter_trap->setArg(1, current_trap_state);
     call_enter_trap->setArg(2, current_pc);
-    call_enter_trap->setArg(3, jh.tval);
+    call_enter_trap->setArg(3, jh.globals["tval"]);
 
     x86_reg_t current_next_pc = get_reg_for(cc, traits::NEXT_PC);
     mov(cc, current_next_pc, get_ptr_for(jh, traits::NEXT_PC));
@@ -4840,6 +4841,22 @@ inline void vm_impl<ARCH>::gen_raise(jit_holder& jh, uint16_t trap_id, uint16_t
     mov(cc, tmp1, 0x80ULL << 24 | (cause << 16) | trap_id);
     mov(cc, get_ptr_for(jh, traits::TRAP_STATE), tmp1);
 }
+template <typename ARCH>
+template <typename T, typename>
+void vm_impl<ARCH>::gen_set_tval(jit_holder& jh, T new_tval) {
+        mov(jh.cc, jh.globals["tval"], new_tval);
+    }
+template <typename ARCH>
+void vm_impl<ARCH>::gen_set_tval(jit_holder& jh, x86_reg_t _new_tval) {
+    if(std::holds_alternative<x86::Gp>(_new_tval)) {
+        x86::Gp new_tval = std::get<x86::Gp>(_new_tval);
+        if(new_tval.size() < 8)
+            new_tval = gen_ext_Gp(jh.cc, new_tval, 64, false);
+        mov(jh.cc, jh.globals["tval"], new_tval);
+    } else {
+        throw std::runtime_error("Variant not supported in gen_set_tval");
+    }
+}
 
 } // namespace tgc5c