--- /dev/null
+++ dyld/dyld-1335/framework/MachTask.swift
@@ -0,0 +1,97 @@
+/* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*- vim: ft=cpp et ts=4 sw=4:
+ *
+ * Copyright (c) 2024 Apple Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+@_implementationOnly import Dyld_Internal
+
+// We implement this a ~Copyable even though it ref counted because the ref count are syscalls, and thus very expensive. When we do need to copy
+// we will do it explicitly via a borrowing constructor.
+struct MachTask: ~Copyable {
+    let port: task_read_t
+
+    init(_ task: task_read_t) throws {
+        let kr = mach_port_mod_refs(mach_task_self_, task, MACH_PORT_RIGHT_SEND, 1)
+        guard kr == KERN_SUCCESS else {
+            throw AtlasError.machError(kr)
+        }
+        self.port = task
+    }
+
+    // Explicit "Copy constructor"
+    init(_ task: borrowing MachTask) throws {
+        let kr = mach_port_mod_refs(mach_task_self_, task.port, MACH_PORT_RIGHT_SEND, 1)
+        guard kr == KERN_SUCCESS else {
+            throw AtlasError.machError(kr)
+        }
+        self.port = task.port
+    }
+
+    deinit {
+        // Use this instead of mach_port_mod_refs() to handle DEADNAMES, etc
+        mach_port_deallocate(mach_task_self_, self.port)
+    }
+}
+
+extension MachTask {
+    func dyldInfo() throws(AtlasError) -> task_dyld_info_data_t {
+        var result              = task_dyld_info_data_t();
+        var dyldTaskInfoCount   = Int32(5 /* TASK_DYLD_INFO_COUNT */)
+        let kr = withUnsafeMutablePointer(to: &result) {
+            return $0.withMemoryRebound(to:integer_t.self, capacity: 5 /* TASK_DYLD_INFO_COUNT */ ) {
+                return task_info(self.port, task_flavor_t(TASK_DYLD_INFO), $0, &dyldTaskInfoCount);
+            }
+        }
+        guard kr == KERN_SUCCESS else {
+            throw AtlasError.machError(kr)
+        }
+        return result
+    }
+    func readStruct<T>(address: RemoteAddress) throws(AtlasError) -> T {
+        var vmSize = mach_msg_type_number_t(0)
+        var bufferPtrScalar: vm_offset_t = 0
+        let kr = vm_read_safe(self.port, address.value, mach_vm_size_t(MemoryLayout<T>.size), &bufferPtrScalar, &vmSize)
+        guard kr == KERN_SUCCESS else {
+            throw AtlasError.machError(kr)
+        }
+        defer {
+            vm_deallocate(mach_task_self_, bufferPtrScalar, vm_size_t(vmSize))
+        }
+        guard vmSize >= MemoryLayout<T>.size else {
+            throw AtlasError.placeHolder
+        }
+        let bufferPtr = UnsafeMutableRawPointer(bitPattern: Int(bitPattern: UInt(bufferPtrScalar)))
+        let buffer = UnsafeMutableRawBufferPointer(start:bufferPtr, count:Int(MemoryLayout<T>.size))
+        return buffer.load(as:T.self)
+    }
+    func readData(address: RemoteAddress, size: UInt64) throws(AtlasError) -> Data {
+        var vmSize = mach_msg_type_number_t(0)
+        var bufferPtrScalar: vm_offset_t = 0
+        let kr = vm_read_safe(self.port, address.value, size, &bufferPtrScalar, &vmSize)
+        guard kr == KERN_SUCCESS else {
+            throw AtlasError.machError(kr)
+        }
+        let bufferPtr = UnsafeMutableRawPointer(bitPattern: Int(bitPattern: UInt(bufferPtrScalar)))
+
+        return Data(bytesNoCopy:bufferPtr!, count:Int(vmSize), deallocator:.virtualMemory)
+    }
+}