[Wasm] Wasi stdlib implementation

KT-56608

libraries/stdlib/wasm/build.gradle.kts

@@ -1,4 +1,6 @@
 import org.jetbrains.kotlin.gradle.dsl.KotlinCompile
+import org.jetbrains.kotlin.gradle.plugin.KotlinSourceSet
+import org.jetbrains.kotlin.gradle.targets.js.KotlinWasmTargetAttribute
 import org.jetbrains.kotlin.gradle.targets.js.d8.D8RootPlugin
 import org.jetbrains.kotlin.gradle.targets.js.ir.KotlinJsIrLink
 
@@ -81,14 +83,20 @@ kotlin {
     @Suppress("DEPRECATION")
     @OptIn(org.jetbrains.kotlin.gradle.targets.js.dsl.ExperimentalWasmDsl::class)
     wasm("wasm") {
-        d8()
+        nodejs()
+    }
+
+    fun KotlinSourceSet.addWasmMainDirs() {
+        kotlin.srcDirs("builtins", "internal", "runtime", "src", "stubs")
+        kotlin.srcDirs("$rootDir/libraries/stdlib/native-wasm/src")
+        kotlin.srcDirs(files(builtInsSources.map { it.destinationDir }))
     }
 
     sourceSets {
         named("wasmMain") {
-            kotlin.srcDirs("builtins", "internal", "runtime", "src", "stubs")
+            addWasmMainDirs()
-            kotlin.srcDirs("$rootDir/libraries/stdlib/native-wasm/src")
+//            kotlin.srcDirs("js/builtins/kotlin", "js/internal", "js/src/kotlin", "js/src/kotlinx", "js/src/org.w3c")
-            kotlin.srcDirs(files(builtInsSources.map { it.destinationDir }))
+       kotlin.srcDirs("wasi/builtins/kotlin", "wasi/internal", "wasi/src/kotlin", "wasi/src/kotlinx")
         }
 
         named("commonMain") {
@@ -153,8 +161,17 @@ val compileTestDevelopmentExecutableKotlinWasm = tasks.named<KotlinJsIrLink>("co
     (this as KotlinCompile<*>).kotlinOptions.freeCompilerArgs += listOf("-Xwasm-enable-array-range-checks")
 }
 
-val runtimeElements by configurations.creating {}
+val runtimeElements by configurations.creating {
-val apiElements by configurations.creating {}
+    attributes {
+        attributes.attribute(KotlinWasmTargetAttribute.wasmTargetAttribute, KotlinWasmTargetAttribute.js)
+    }
+}
+
+val apiElements by configurations.creating {
+    attributes {
+        attributes.attribute(KotlinWasmTargetAttribute.wasmTargetAttribute, KotlinWasmTargetAttribute.js)
+    }
+}
 
 publish(sbom = false) {
     pom.packaging = "klib"

libraries/stdlib/wasm/builtins/kotlin/Throwable.kt

@@ -4,49 +4,3 @@
  */
 
 package kotlin
-
-import kotlin.wasm.internal.ExternalInterfaceType
-import kotlin.wasm.internal.getSimpleName
-import kotlin.wasm.internal.jsToKotlinStringAdapter
-
-/**
- * The base class for all errors and exceptions. Only instances of this class can be thrown or caught.
- *
- * @param message the detail message string.
- * @param cause the cause of this throwable.
- */
-public open class Throwable(open val message: String?, open val cause: kotlin.Throwable?) {
-    constructor(message: String?) : this(message, null)
-
-    constructor(cause: Throwable?) : this(cause?.toString(), cause)
-
-    constructor() : this(null, null)
-
-    internal val jsStack: ExternalInterfaceType = captureStackTrace()
-
-    private var _stack: String? = null
-    internal val stack: String
-        get() {
-            var value = _stack
-            if (value == null) {
-                value = jsToKotlinStringAdapter(jsStack).removePrefix("Error\n")
-                _stack = value
-            }
-
-            return value
-        }
-
-    internal var suppressedExceptionsList: MutableList<Throwable>? = null
-
-    /**
-     * Returns the short description of this throwable consisting of the exception class name
-     * followed by the exception message if it is not null.
-     */
-    public override fun toString(): String {
-        val s = getSimpleName(this.typeInfo)
-        return if (message != null) s + ": " + message.toString() else s
-    }
-}
-
-private fun captureStackTrace(): ExternalInterfaceType =
-    js("new Error().stack")

libraries/stdlib/wasm/internal/ExceptionHelpers.kt

@@ -0,0 +1,8 @@
+/*
+ * Copyright 2010-2022 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package kotlin.wasm.internal
+
+internal var isNotFirstWasmExportCall: Boolean = false

libraries/stdlib/wasm/internal/ExternalWrapper.kt

@@ -0,0 +1,21 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package kotlin.wasm.internal
+
+@Suppress("UNUSED_PARAMETER")
+@ExcludedFromCodegen
+/*
+* Compiler generates inplace next code:
+* ```
+* block (result anyref) {
+*     local.get 0
+*     extern.internalize
+*     br_on_cast_fail 0000_0011b 0 (type any) (type $kotlin.Any)
+*     return
+* }
+* ```
+*/
+internal fun returnArgumentIfItIsKotlinAny(): Unit = implementedAsIntrinsic

libraries/stdlib/wasm/internal/kotlin/wasm/internal/WasmInstructions.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
  * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
@@ -9,8 +9,6 @@
 
 package kotlin.wasm.internal
 
-import kotlin.wasm.internal.ExternalInterfaceType
-
 @WasmOp(WasmOp.UNREACHABLE)
 internal fun wasm_unreachable(): Nothing =
     implementedAsIntrinsic
@@ -496,9 +494,3 @@ internal fun wasm_i64_popcnt(a: Long): Long =
 @WasmOp(WasmOp.I64_CTZ)
 internal fun wasm_i64_ctz(a: Long): Long =
     implementedAsIntrinsic
-
-// Reference type operators
-
-@WasmOp(WasmOp.REF_IS_NULL)
-internal external fun wasm_externref_is_null(a: ExternalInterfaceType?): Boolean =
-    implementedAsIntrinsic

libraries/stdlib/wasm/js/builtins/kotlin/Throwable.kt

@@ -0,0 +1,52 @@
+/*
+ * Copyright 2010-2022 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package kotlin
+
+import kotlin.wasm.internal.ExternalInterfaceType
+import kotlin.wasm.internal.getSimpleName
+import kotlin.wasm.internal.jsToKotlinStringAdapter
+
+/**
+ * The base class for all errors and exceptions. Only instances of this class can be thrown or caught.
+ *
+ * @param message the detail message string.
+ * @param cause the cause of this throwable.
+ */
+public open class Throwable(open val message: String?, open val cause: kotlin.Throwable?) {
+    constructor(message: String?) : this(message, null)
+
+    constructor(cause: Throwable?) : this(cause?.toString(), cause)
+
+    constructor() : this(null, null)
+
+    internal val jsStack: ExternalInterfaceType = captureStackTrace()
+
+    private var _stack: String? = null
+    internal val stack: String
+        get() {
+            var value = _stack
+            if (value == null) {
+                value = jsToKotlinStringAdapter(jsStack).removePrefix("Error\n")
+                _stack = value
+            }
+
+            return value
+        }
+
+    internal var suppressedExceptionsList: MutableList<Throwable>? = null
+
+    /**
+     * Returns the short description of this throwable consisting of the exception class name
+     * followed by the exception message if it is not null.
+     */
+    public override fun toString(): String {
+        val s = getSimpleName(this.typeInfo)
+        return if (message != null) s + ": " + message.toString() else s
+    }
+}
+
+private fun captureStackTrace(): ExternalInterfaceType =
+    js("new Error().stack")

libraries/stdlib/wasm/js/internal/ExceptionHelpers.kt

@@ -19,5 +19,3 @@ private fun throwJsError(message: String?, wasmTypeName: String?, stack: Externa
 internal fun throwAsJsException(t: Throwable): Nothing {
     throwJsError(t.message, getSimpleName(t.typeInfo), t.jsStack)
 }
-
-internal var isNotFirstWasmExportCall: Boolean = false

libraries/stdlib/wasm/js/internal/ExternalWrapper.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
  * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
@@ -145,21 +145,6 @@ private fun Any.asWasmExternRef(): ExternalInterfaceType =
 internal fun isNullish(ref: ExternalInterfaceType?): Boolean =
     js("ref == null")
 
-@Suppress("UNUSED_PARAMETER")
-@ExcludedFromCodegen
-/*
-* Compiler generates inplace next code:
-* ```
-* block (result anyref) {
-*     local.get 0
-*     extern.internalize
-*     br_on_cast_fail 0000_0011b 0 (type any) (type $kotlin.Any)
-*     return
-* }
-* ```
-*/
-internal fun returnArgumentIfItIsKotlinAny(): Unit = implementedAsIntrinsic
-
 internal fun externRefToAny(ref: ExternalInterfaceType): Any? {
     // TODO rewrite it so to get something like:
     // block {

libraries/stdlib/wasm/js/internal/WasmInstructions.kt

@@ -0,0 +1,17 @@
+/*
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+@file:ExcludedFromCodegen
+@file:Suppress("unused", "NON_ABSTRACT_FUNCTION_WITH_NO_BODY", "INLINE_CLASS_IN_EXTERNAL_DECLARATION", "UNUSED_PARAMETER")
+
+
+package kotlin.wasm.internal
+
+import kotlin.wasm.internal.ExternalInterfaceType
+
+// Reference type operators
+
+@WasmOp(WasmOp.REF_IS_NULL)
+internal external fun wasm_externref_is_null(a: ExternalInterfaceType?): Boolean

libraries/stdlib/wasm/js/src/kotlin/io.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
  * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
@@ -38,5 +38,3 @@ public actual fun readln(): String = throw UnsupportedOperationException("readln
 
 @SinceKotlin("1.6")
 public actual fun readlnOrNull(): String? = throw UnsupportedOperationException("readlnOrNull is not supported in Kotlin/WASM")
-
-internal actual interface Serializable

libraries/stdlib/wasm/js/src/kotlin/random/PlatformRandom.kt

@@ -0,0 +1,12 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package kotlin.random
+
+private fun initialSeed(): Int =
+    js("((Math.random() * Math.pow(2, 32)) | 0)")
+
+internal actual fun defaultPlatformRandom(): Random =
+    Random(initialSeed())

libraries/stdlib/wasm/js/src/kotlin/time/Duration.kt

@@ -23,7 +23,6 @@ internal actual fun formatToExactDecimals(value: Double, decimals: Int): String
     } else {
         val pow = (10.0).pow(decimals)
         round(abs(value) * pow) / pow * sign(value)
-        round(abs(value) * pow) / pow * sign(value)
     }
     return if (abs(rounded) < 1e21) {
         // toFixed switches to scientific format after 1e21

libraries/stdlib/wasm/src/kotlin/Serializable.kt

@@ -0,0 +1,8 @@
+/*
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package kotlin.io
+
+internal actual interface Serializable

libraries/stdlib/wasm/src/kotlin/random/PlatformRandom.kt

@@ -5,11 +5,5 @@
 
 package kotlin.random
 
-private fun initialSeed(): Int =
-    js("((Math.random() * Math.pow(2, 32)) | 0)")
-
-internal actual fun defaultPlatformRandom(): Random =
-    Random(initialSeed())
-
 internal actual fun doubleFromParts(hi26: Int, low27: Int): Double =
     (hi26.toLong().shl(27) + low27) / (1L shl 53).toDouble()

libraries/stdlib/wasm/test/unsafe/MemoryAllocationTest.kt

@@ -3,9 +3,6 @@ package test.wasm.unsafe
 import kotlin.wasm.unsafe.*
 import kotlin.test.*
 
-private fun jsConcatStrings(a: String, b: String): String =
-    js("a + b")
-
 @OptIn(UnsafeWasmMemoryApi::class)
 class MemoryAllocationTest {
     val pageSize = 65_536
@@ -128,14 +125,6 @@ class MemoryAllocationTest {
         assertTrue(max1 < min1_1)
     }
 
-    @Test
-    fun testJsIntropInsideAllocations() {
-        withScopedMemoryAllocator { allocator ->
-            assertEquals(jsConcatStrings("str1", "str2"), "str1str2")
-            allocator.allocate(10)
-        }
-    }
-
     @Test
     fun testNestedAllocatorThrows() {
         var leakedAllocator1: MemoryAllocator? = null

libraries/stdlib/wasm/testJs/js/AsyncTest.kt

@@ -1,3 +1,8 @@
+/*
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
 package test.js
 
 import kotlin.js.*

libraries/stdlib/wasm/testJs/unsafe/MemoryAllocationJsTest.kt

@@ -0,0 +1,18 @@
+package test.wasm.unsafe
+
+import kotlin.wasm.unsafe.*
+import kotlin.test.*
+
+private fun jsConcatStrings(a: String, b: String): String =
+    js("a + b")
+
+@OptIn(UnsafeWasmMemoryApi::class)
+class MemoryAllocationJsTest {
+    @Test
+    fun testJsIntropInsideAllocations() {
+        withScopedMemoryAllocator { allocator ->
+            assertEquals(jsConcatStrings("str1", "str2"), "str1str2")
+            allocator.allocate(10)
+        }
+    }
+}

libraries/stdlib/wasm/wasi/builtins/kotlin/Throwable.kt

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2010-2022 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package kotlin
+
+import kotlin.wasm.internal.getSimpleName
+
+/**
+ * The base class for all errors and exceptions. Only instances of this class can be thrown or caught.
+ *
+ * @param message the detail message string.
+ * @param cause the cause of this throwable.
+ */
+public open class Throwable(open val message: String?, open val cause: kotlin.Throwable?) {
+    constructor(message: String?) : this(message, null)
+
+    constructor(cause: Throwable?) : this(cause?.toString(), cause)
+
+    constructor() : this(null, null)
+
+    //TODO: Investigate possibility to make WASI stack discoverable (KT-60965)
+    internal val stack: String get() = ""
+
+    internal var suppressedExceptionsList: MutableList<Throwable>? = null
+
+    /**
+     * Returns the short description of this throwable consisting of the exception class name
+     * followed by the exception message if it is not null.
+     */
+    public override fun toString(): String {
+        val s = getSimpleName(this.typeInfo)
+        return if (message != null) s + ": " + message.toString() else s
+    }
+}

libraries/stdlib/wasm/wasi/src/kotlin/WasiError.kt

@@ -0,0 +1,398 @@
+/*
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package kotlin.wasm
+
+/**
+ * [WASI Error codes for preview1](https://github.com/WebAssembly/WASI/blob/main/legacy/preview1/docs.md)
+ */
+internal enum class WasiErrorCode {
+    /**
+     * No error occurred. System call completed successfully.
+     */
+    SUCCESS,
+
+    /**
+     * Argument list too long.
+     */
+    _2BIG,
+
+    /**
+     * Permission denied.
+     */
+    ACCES,
+
+    /**
+     * Address in use.
+     */
+    ADDRINUSE,
+
+    /**
+     * Address not available.
+     */
+    ADDRNOTAVAIL,
+
+    /**
+     * Address family not supported.
+     */
+    AFNOSUPPORT,
+
+    /**
+     * Resource unavailable, or operation would block.
+     */
+    AGAIN,
+
+    /**
+     * Connection already in progress.
+     */
+    ALREADY,
+
+    /**
+     * Bad file descriptor.
+     */
+    BADF,
+
+    /**
+     * Bad message.
+     */
+    BADMSG,
+
+    /**
+     * Device or resource busy.
+     */
+    BUSY,
+
+    /**
+     * Operation canceled.
+     */
+    CANCELED,
+
+    /**
+     * No child processes.
+     */
+    CHILD,
+
+    /**
+     * Connection aborted.
+     */
+    CONNABORTED,
+
+    /**
+     * Connection refused.
+     */
+    CONNREFUSED,
+
+    /**
+     * Connection reset.
+     */
+    CONNRESET,
+
+    /**
+     * Resource deadlock would occur.
+     */
+    DEADLK,
+
+    /**
+     * Destination address required.
+     */
+    DESTADDRREQ,
+
+    /**
+     * Mathematics argument out of domain of function.
+     */
+    DOM,
+
+    /**
+     * Reserved.
+     */
+    DQUOT,
+
+    /**
+     * File exists.
+     */
+    EXIST,
+
+    /**
+     * Bad address.
+     */
+    FAULT,
+
+    /**
+     * File too large.
+     */
+    FBIG,
+
+    /**
+     * Host is unreachable.
+     */
+    HOSTUNREACH,
+
+    /**
+     * Identifier removed.
+     */
+    IDRM,
+
+    /**
+     * Illegal byte sequence.
+     */
+    ILSEQ,
+
+    /**
+     * Operation in progress.
+     */
+    INPROGRESS,
+
+    /**
+     * Interrupted function.
+     */
+    INTR,
+
+    /**
+     * Invalid argument.
+     */
+    INVAL,
+
+    /**
+     * I/O error.
+     */
+    IO,
+
+    /**
+     * Socket is connected.
+     */
+    ISCONN,
+
+    /**
+     * Is a directory.
+     */
+    ISDIR,
+
+    /**
+     * Too many levels of symbolic links.
+     */
+    LOOP,
+
+    /**
+     * File descriptor value too large.
+     */
+    MFILE,
+
+    /**
+     * Too many links.
+     */
+    MLINK,
+
+    /**
+     * Message too large.
+     */
+    MSGSIZE,
+
+    /**
+     * Reserved.
+     */
+    MULTIHOP,
+
+    /**
+     * Filename too long.
+     */
+    NAMETOOLONG,
+
+    /**
+     * Network is down.
+     */
+    NETDOWN,
+
+    /**
+     * Connection aborted by network.
+     */
+    NETRESET,
+
+    /**
+     * Network unreachable.
+     */
+    NETUNREACH,
+
+    /**
+     * Too many files open in system.
+     */
+    NFILE,
+
+    /**
+     * No buffer space available.
+     */
+    NOBUFS,
+
+    /**
+     * No such device.
+     */
+    NODEV,
+
+    /**
+     * No such file or directory.
+     */
+    NOENT,
+
+    /**
+     * Executable file format error.
+     */
+    NOEXEC,
+
+    /**
+     * No locks available.
+     */
+    NOLCK,
+
+    /**
+     * Reserved.
+     */
+    NOLINK,
+
+    /**
+     * Not enough space.
+     */
+    NOMEM,
+
+    /**
+     * No message of the desired type.
+     */
+    NOMSG,
+
+    /**
+     * Protocol not available.
+     */
+    NOPROTOOPT,
+
+    /**
+     * No space left on device.
+     */
+    NOSPC,
+
+    /**
+     * Function not supported.
+     */
+    NOSYS,
+
+    /**
+     * The socket is not connected.
+     */
+    NOTCONN,
+
+    /**
+     * Not a directory or a symbolic link to a directory.
+     */
+    NOTDIR,
+
+    /**
+     * Directory not empty.
+     */
+    NOTEMPTY,
+
+    /**
+     * State not recoverable.
+     */
+    NOTRECOVERABLE,
+
+    /**
+     * Not a socket.
+     */
+    NOTSOCK,
+
+    /**
+     * Not supported, or operation not supported on socket.
+     */
+    NOTSUP,
+
+    /**
+     * Inappropriate I/O control operation.
+     */
+    NOTTY,
+
+    /**
+     * No such device or address.
+     */
+    NXIO,
+
+    /**
+     * Value too large to be stored in data type.
+     */
+    OVERFLOW,
+
+    /**
+     * Previous owner died.
+     */
+    OWNERDEAD,
+
+    /**
+     * Operation not permitted.
+     */
+    PERM,
+
+    /**
+     * Broken pipe.
+     */
+    PIPE,
+
+    /**
+     * Protocol error.
+     */
+    PROTO,
+
+    /**
+     * Protocol not supported.
+     */
+    PROTONOSUPPORT,
+
+    /**
+     * Protocol wrong type for socket.
+     */
+    PROTOTYPE,
+
+    /**
+     * Result too large.
+     */
+    RANGE,
+
+    /**
+     * Read-only file system.
+     */
+    ROFS,
+
+    /**
+     * Invalid seek.
+     */
+    SPIPE,
+
+    /**
+     * No such process.
+     */
+    SRCH,
+
+    /**
+     * Reserved.
+     */
+    STALE,
+
+    /**
+     * Connection timed out.
+     */
+    TIMEDOUT,
+
+    /**
+     * Text file busy.
+     */
+    TXTBSY,
+
+    /**
+     * Cross-device link.
+     */
+    XDEV,
+
+    /**
+     * Extension: Capabilities insufficient.
+     */
+    NOTCAPABLE,
+}
+
+internal class WasiError(val error: WasiErrorCode) : Throwable(message = "WASI call failed with $error")

libraries/stdlib/wasm/wasi/src/kotlin/io.kt

@@ -0,0 +1,98 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package kotlin.io
+
+import kotlin.wasm.WasiError
+import kotlin.wasm.WasiErrorCode
+import kotlin.wasm.WasmImport
+import kotlin.wasm.unsafe.MemoryAllocator
+import kotlin.wasm.unsafe.withScopedMemoryAllocator
+
+private const val STDOUT = 1
+private const val STDERR = 2
+
+/**
+ * Write to a file descriptor. Note: This is similar to `writev` in POSIX.
+ */
+@WasmImport("wasi_snapshot_preview1", "fd_write")
+private external fun wasiRawFdWrite(descriptor: Int, scatterPtr: Int, scatterSize: Int, errorPtr: Int): Int
+
+internal fun wasiPrintImpl(
+    allocator: MemoryAllocator,
+    data: ByteArray?,
+    newLine: Boolean,
+    useErrorStream: Boolean
+) {
+    val dataSize = data?.size ?: 0
+    val memorySize = dataSize + (if (newLine) 1 else 0)
+    if (memorySize == 0) return
+
+    val ptr = allocator.allocate(memorySize)
+    if (data != null) {
+        var currentPtr = ptr
+        for (el in data) {
+            currentPtr.storeByte(el)
+            currentPtr += 1
+        }
+    }
+    if (newLine) {
+        (ptr + dataSize).storeByte(0x0A)
+    }
+
+    val scatterPtr = allocator.allocate(8)
+    (scatterPtr + 0).storeInt(ptr.address.toInt())
+    (scatterPtr + 4).storeInt(memorySize)
+
+    val rp0 = allocator.allocate(4)
+
+    val ret =
+        wasiRawFdWrite(
+            descriptor = if (useErrorStream) STDERR else STDOUT,
+            scatterPtr = scatterPtr.address.toInt(),
+            scatterSize = 1,
+            errorPtr = rp0.address.toInt()
+        )
+
+    if (ret != 0) {
+        throw WasiError(WasiErrorCode.values()[ret])
+    }
+}
+
+private fun printImpl(message: String?, useErrorStream: Boolean, newLine: Boolean) {
+    withScopedMemoryAllocator { allocator ->
+        wasiPrintImpl(
+            allocator = allocator,
+            data = message?.encodeToByteArray(),
+            newLine = newLine,
+            useErrorStream = useErrorStream,
+        )
+    }
+}
+
+internal fun printError(error: String?) {
+    printImpl(error, useErrorStream = true, newLine = false)
+}
+
+/** Prints the line separator to the standard output stream. */
+public actual fun println() {
+    printImpl(null, useErrorStream = false, newLine = true)
+}
+
+/** Prints the given [message] and the line separator to the standard output stream. */
+public actual fun println(message: Any?) {
+    printImpl(message?.toString(), useErrorStream = false, newLine = true)
+}
+
+/** Prints the given [message] to the standard output stream. */
+public actual fun print(message: Any?) {
+    printImpl(message?.toString(), useErrorStream = false, newLine = false)
+}
+
+@SinceKotlin("1.6")
+public actual fun readln(): String = TODO("wasi")
+
+@SinceKotlin("1.6")
+public actual fun readlnOrNull(): String? = TODO("wasi")

libraries/stdlib/wasm/wasi/src/kotlin/random/PlatformRandom.kt

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package kotlin.random
+
+import kotlin.wasm.WasiError
+import kotlin.wasm.WasiErrorCode
+import kotlin.wasm.WasmImport
+import kotlin.wasm.unsafe.withScopedMemoryAllocator
+
+/**
+ * Write high-quality random data into a buffer. This function blocks when the implementation is
+ * unable to immediately provide sufficient high-quality random data. This function may execute
+ * slowly, so when large mounts of random data are required, it's advisable to use this function to
+ * seed a pseudo-random number generator, rather than to provide the random data directly.
+ */
+@WasmImport("wasi_snapshot_preview1", "random_get")
+//TODO: Better to use 64-bit Long as a seed if possible. (KT-60962)
+internal external fun wasiRawRandomGet(address: Int, size: Int): Int
+
+private fun wasiRandomGet(): Int {
+    withScopedMemoryAllocator { allocator ->
+        val memory = allocator.allocate(Int.SIZE_BYTES)
+        val ret = wasiRawRandomGet(memory.address.toInt(), Int.SIZE_BYTES)
+        return if (ret == 0) {
+            memory.loadInt()
+        } else {
+            throw WasiError(WasiErrorCode.values()[ret])
+        }
+    }
+}
+
+internal actual fun defaultPlatformRandom(): Random =
+    Random(wasiRandomGet())

libraries/stdlib/wasm/wasi/src/kotlin/time/Duration.kt

@@ -0,0 +1,19 @@
+/*
+ * Copyright 2010-2022 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package kotlin.time
+
+import kotlin.math.fdlibm.__ieee754_pow
+
+internal actual fun formatToExactDecimals(value: Double, decimals: Int): String {
+    // TODO Make correct implementation (KT-60964)
+    val pow = __ieee754_pow(10.0, decimals.toDouble())
+    val round = kotlin.math.fdlibm.rint(value * pow)
+    return (round / pow).toString()
+}
+
+internal actual fun formatUpToDecimals(value: Double, decimals: Int): String = TODO("Wasi Implement")
+
+internal actual inline val durationAssertionsEnabled: Boolean get() = true

libraries/stdlib/wasm/wasi/src/kotlin/time/TimeSources.kt

@@ -0,0 +1,60 @@
+/*
+ * Copyright 2010-2022 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package kotlin.time
+
+import kotlin.time.Duration.Companion.nanoseconds
+import kotlin.time.TimeSource.Monotonic.ValueTimeMark
+import kotlin.wasm.WasiError
+import kotlin.wasm.WasiErrorCode
+import kotlin.wasm.WasmImport
+import kotlin.wasm.unsafe.Pointer
+import kotlin.wasm.unsafe.withScopedMemoryAllocator
+
+private const val MONOTONIC = 1
+
+/**
+ * Return the time value of a clock. Note: This is similar to `clock_gettime` in POSIX.
+ */
+@WasmImport("wasi_snapshot_preview1", "clock_time_get")
+private external fun wasiRawClockTimeGet(clockId: Int, precision: Long, resultPtr: Int): Int
+
+private fun clockTimeGet(): Long = withScopedMemoryAllocator { allocator ->
+    val rp0 = allocator.allocate(8)
+    val ret = wasiRawClockTimeGet(
+        clockId = MONOTONIC,
+        precision = 1,
+        resultPtr = rp0.address.toInt()
+    )
+    if (ret == 0) {
+        (Pointer(rp0.address.toInt().toUInt())).loadLong()
+    } else {
+        throw WasiError(WasiErrorCode.values()[ret])
+    }
+}
+
+@SinceKotlin("1.3")
+//TODO: Try use implementation of K/JVM since it uses a Long nanosecond counter similar to System.nanoTime (KT-60963)
+internal actual object MonotonicTimeSource : TimeSource.WithComparableMarks {
+    actual override fun markNow(): ValueTimeMark =
+        ValueTimeMark(clockTimeGet())
+
+    actual fun elapsedFrom(timeMark: ValueTimeMark): Duration =
+        (clockTimeGet() - timeMark.reading).nanoseconds
+
+    actual fun adjustReading(timeMark: ValueTimeMark, duration: Duration): ValueTimeMark =
+        ValueTimeMark(timeMark.reading + duration.toLong(DurationUnit.NANOSECONDS))
+
+    actual fun differenceBetween(one: ValueTimeMark, another: ValueTimeMark): Duration {
+        val ms1 = one.reading
+        val ms2 = another.reading
+        return if (ms1 == ms2) Duration.ZERO else (ms1 - ms2).nanoseconds
+    }
+
+    override fun toString(): String = "WASI monotonic time source"
+}
+
+@Suppress("ACTUAL_WITHOUT_EXPECT") // visibility
+internal actual typealias ValueTimeMarkReading = Long