diff --git a/core/libs/prx/libc/include/exceptions/Runtime.hpp b/core/libs/prx/libc/include/exceptions/Runtime.hpp
index bb50789ba..783b14255 100644
--- a/core/libs/prx/libc/include/exceptions/Runtime.hpp
+++ b/core/libs/prx/libc/include/exceptions/Runtime.hpp
@@ -50,12 +50,12 @@ void Release(void*);
 }
 
 extern "C" {
-void* __cxa_allocate_exception_nid_postfix(std::size_t);
-void __cxa_free_exception_nid_postfix(void*);
-[[noreturn]] void __cxa_throw_nid_postfix(void*, std::type_info*, void (*)(void*));
-[[noreturn]] void __cxa_rethrow_nid_postfix();
-void* __cxa_begin_catch_nid_postfix(void*);
-void __cxa_end_catch_nid_postfix();
+void* APS5_VABI __cxa_allocate_exception_nid_postfix(std::size_t);
+void APS5_VABI __cxa_free_exception_nid_postfix(void*);
+[[noreturn]] void APS5_VABI __cxa_throw_nid_postfix(void*, std::type_info*, void (*)(void*));
+[[noreturn]] void APS5_VABI __cxa_rethrow_nid_postfix();
+void* APS5_VABI __cxa_begin_catch_nid_postfix(void*);
+void APS5_VABI __cxa_end_catch_nid_postfix();
 }
 
 #endif
diff --git a/core/libs/prx/libc/include/exceptions/Unwind.hpp b/core/libs/prx/libc/include/exceptions/Unwind.hpp
index cfc25ee27..2559dfd45 100644
--- a/core/libs/prx/libc/include/exceptions/Unwind.hpp
+++ b/core/libs/prx/libc/include/exceptions/Unwind.hpp
@@ -93,11 +93,11 @@ inline unsigned EncodingSize(Byte encoding) {
 }
 
 extern "C" {
-_Unwind_Reason_Code __gxx_personality_v0_nid_postfix(int, _Unwind_Action, std::uint64_t, _Unwind_Exception*, _Unwind_Context*);
-_Unwind_Reason_Code _Unwind_RaiseException_nid_postfix(_Unwind_Exception*);
-[[noreturn]] void _Unwind_Resume_nid_postfix(_Unwind_Exception*);
-_Unwind_Reason_Code _Unwind_Resume_or_Rethrow_nid_postfix(_Unwind_Exception*);
-void _Unwind_DeleteException_nid_postfix(_Unwind_Exception*);
+    _Unwind_Reason_Code APS5_VABI __gxx_personality_v0_nid_postfix(int, _Unwind_Action, std::uint64_t, _Unwind_Exception*, _Unwind_Context*);
+    _Unwind_Reason_Code APS5_VABI _Unwind_RaiseException_nid_postfix(_Unwind_Exception*);
+    [[noreturn]] void APS5_VABI _Unwind_Resume_nid_postfix(_Unwind_Exception*);
+    _Unwind_Reason_Code APS5_VABI _Unwind_Resume_or_Rethrow_nid_postfix(_Unwind_Exception*);
+    void APS5_VABI _Unwind_DeleteException_nid_postfix(_Unwind_Exception*);
 }
 
 #endif
diff --git a/core/libs/prx/libc/include/general/VabiMacros.hpp b/core/libs/prx/libc/include/general/VabiMacros.hpp
index fb1318e5d..1eed45e45 100644
--- a/core/libs/prx/libc/include/general/VabiMacros.hpp
+++ b/core/libs/prx/libc/include/general/VabiMacros.hpp
@@ -1,6 +1,10 @@
 #ifndef CORE_LIBS_PRX_LIBC_INCLUDE_GENERAL_GENERALMACROS_HPP
 #define CORE_LIBS_PRX_LIBC_INCLUDE_GENERAL_GENERALMACROS_HPP
 
+#ifdef _WIN32
+#define APS5_VABI __attribute__((sysv_abi))
+#else
 #define APS5_VABI
+#endif
 
 #endif
diff --git a/core/libs/prx/libc/src/FileAndHeap.cpp b/core/libs/prx/libc/src/FileAndHeap.cpp
index 0803e8b54..3042d9429 100644
--- a/core/libs/prx/libc/src/FileAndHeap.cpp
+++ b/core/libs/prx/libc/src/FileAndHeap.cpp
@@ -8,7 +8,7 @@
 
 extern "C" {
 
-[[noreturn]] void _ZSt11_Xbad_allocv_nid_postfix();
+[[noreturn]] void APS5_VABI _ZSt11_Xbad_allocv_nid_postfix();
 
 FileStream* APS5_VABI fopen_nid_postfix(const char* filename, const char* mode) {
     if (!filename || !mode) throw std::runtime_error("fopen: null argument");
diff --git a/core/libs/prx/libc/src/General.cpp b/core/libs/prx/libc/src/General.cpp
index ede127991..e70f3d513 100644
--- a/core/libs/prx/libc/src/General.cpp
+++ b/core/libs/prx/libc/src/General.cpp
@@ -1,6 +1,6 @@
 #include <stdexcept>
 #include <string>
 
-extern "C" void APS5_VABI NotImplemented_nid_no_patch(const char* funcName) {
+extern "C" void NotImplemented_nid_no_patch(const char* funcName) {
     throw std::runtime_error(std::string(funcName) + " not implemented");
 }
diff --git a/core/libs/prx/libc/src/exception/StandardExceptions.cpp b/core/libs/prx/libc/src/exception/StandardExceptions.cpp
index 276f850b6..3e0fcf7f0 100644
--- a/core/libs/prx/libc/src/exception/StandardExceptions.cpp
+++ b/core/libs/prx/libc/src/exception/StandardExceptions.cpp
@@ -271,7 +271,7 @@ const char* APS5_VABI _ZNKSt8ios_base7failure4whatEv_nid_postfix(const LibcExcep
 [[noreturn]] void APS5_VABI _ZSt14_Xlength_errorPKc_nid_postfix(const char* message) { LibcException::ThrowMessage(_ZTVSt12length_error_nid_postfix, message); }
 [[noreturn]] void APS5_VABI _ZSt18_Xinvalid_argumentPKc_nid_postfix(const char* message) { LibcException::ThrowMessage(_ZTVSt16invalid_argument_nid_postfix, message); }
 [[noreturn]] void APS5_VABI _ZSt19_Xbad_function_callv_nid_postfix() { LibcException::ThrowPlain(_ZTVSt17bad_function_call_nid_postfix); }
-[[noreturn]] void _ZSt13_Xregex_errorNSt15regex_constants10error_typeE_nid_postfix(std::regex_constants::error_type code) {
+[[noreturn]] void APS5_VABI _ZSt13_Xregex_errorNSt15regex_constants10error_typeE_nid_postfix(std::regex_constants::error_type code) {
     struct RegexObject { LibcException::ExceptionObject base; std::regex_constants::error_type code; };
     auto* object = static_cast<RegexObject*>(__cxa_allocate_exception_nid_postfix(sizeof(RegexObject)));
     LibcException::Construct(&object->base, _ZTVSt11regex_error_nid_postfix, "regular expression error");
diff --git a/core/libs/prx/libkernel/Pthread/Pthread.cpp b/core/libs/prx/libkernel/Pthread/Pthread.cpp
index 2f6ddf552..d4bf4ba74 100644
--- a/core/libs/prx/libkernel/Pthread/Pthread.cpp
+++ b/core/libs/prx/libkernel/Pthread/Pthread.cpp
@@ -39,6 +39,8 @@ struct ThreadArgs {
 };
 
 static void RunThread(std::unique_ptr<ThreadArgs> args) {
+    fprintf(stderr, "RunThread started\n");
+    fprintf(stdout, "RunThread started stdout\n");
     void* retval = args->entry(args->arg);
     PthreadPrivate* self = args->self;
     args.reset();