stdlib: Move exit function to porting layer

backend.native/tests/runtime/basic/exit.kt

@@ -2,4 +2,6 @@ import kotlin.system.*
 
 fun main(args: Array<String>) {
     exitProcess(42)
+    @Suppress("UNREACHABLE_CODE")
+    throw RuntimeException("Exit function call returned normally")
 }

buildSrc/plugins/src/main/groovy/org/jetbrains/kotlin/KonanTest.groovy

@@ -214,6 +214,11 @@ fun handleExceptionContinuation(x: (Throwable) -> Unit): Continuation<Any?> = ob
 
     @TaskAction
     void executeTest() {
+        if (!enabled) {
+            println "Test is disabled: $name"
+            return
+        }
+
         createOutputDirectory()
         def program = buildExePath()
         def suffix = targetManager.programSuffix

runtime/src/launcher/js/launcher.js

@@ -42,6 +42,9 @@ if (isBrowser()) {
         },
         flush: function () {
             this.print(this.stdout);
+        },
+        exit: function(status) {
+            throw Error("Kotlin process called exit (" + status + ")");
         }
     };
 } else {
@@ -49,6 +52,7 @@ if (isBrowser()) {
         write: write,
         print: print,
         flush: function() {},
+        exit: quit
     };
 }
 
@@ -132,6 +136,9 @@ var konan_dependencies = {
         Konan_abort: function(pointer) {
             throw new Error("Konan_abort(" + utf8decode(toString(pointer)) + ")");
         },
+        Konan_exit: function(status) {
+            runtime.exit(status);
+        },
         Konan_js_arg_size: function(index) {
             if (index >= global_arguments.length) return -1;
             return global_arguments[index].length + 1; // + 1 for trailing zero.

runtime/src/main/cpp/Natives.cpp

@@ -67,7 +67,7 @@ void Kotlin_interop_free(void* ptr) {
 }
 
 void Kotlin_system_exitProcess(KInt status) {
-  exit(status);
+  konan::exit(status);
 }
 
 }  // extern "C"

runtime/src/main/cpp/Porting.cpp

@@ -31,6 +31,11 @@
 
 #include "Porting.h"
 
+#ifdef KONAN_WASM
+extern "C" void Konan_abort(const char*);
+extern "C" void Konan_exit(int32_t status);
+#endif
+
 namespace konan {
 
 // Console operations.
@@ -90,6 +95,16 @@ void abort() {
   ::abort();
 }
 
+#ifdef KONAN_WASM
+void exit(int32_t status) {
+  Konan_exit(status);
+}
+#else
+void exit(int32_t status) {
+  ::exit(status);
+}
+#endif
+
 // String/byte operations.
 // memcpy/memmove are not here intentionally, as frequently implemented/optimized
 // by C compiler.
@@ -235,7 +250,6 @@ long getpagesize() {
 
 extern "C" {
 #ifdef KONAN_WASM
-    extern void Konan_abort(const char*);
 
     // TODO: get rid of these.
     void _ZNKSt3__220__vector_base_commonILb1EE20__throw_length_errorEv(void) {

runtime/src/main/cpp/Porting.h

@@ -31,6 +31,7 @@ uint32_t consoleReadUtf8(void* utf8, uint32_t maxSizeBytes);
 
 // Process control.
 void abort();
+void exit(int32_t status);
 
 // String/byte operations.
 // memcpy/memmove/memcmp are not here intentionally, as frequently implemented/optimized