diff --git a/GNUmakefile b/GNUmakefile
index 94d9c357d2..22e31a17bd 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -335,6 +335,7 @@ TEST_PACKAGES_FAST = \
 	net/http/internal/ascii \
 	net/mail \
 	os \
+	os/signal \
 	path \
 	reflect \
 	sync \
diff --git a/src/os/exec.go b/src/os/exec.go
index 1ea9dcbd8c..c348eebeba 100644
--- a/src/os/exec.go
+++ b/src/os/exec.go
@@ -47,6 +47,10 @@ func (p *ProcessState) Sys() interface{} {
 	return nil // TODO
 }
 
+func (p *ProcessState) Exited() bool {
+	return false // TODO
+}
+
 // ExitCode returns the exit code of the exited process, or -1
 // if the process hasn't exited or was terminated by a signal.
 func (p *ProcessState) ExitCode() int {
@@ -58,7 +62,7 @@ type Process struct {
 }
 
 func StartProcess(name string, argv []string, attr *ProcAttr) (*Process, error) {
-	return nil, &PathError{Op: "fork/exec", Path: name, Err: ErrNotImplemented}
+	return startProcess(name, argv, attr)
 }
 
 func (p *Process) Wait() (*ProcessState, error) {
diff --git a/src/os/exec_linux.go b/src/os/exec_linux.go
new file mode 100644
index 0000000000..d8a7fe168e
--- /dev/null
+++ b/src/os/exec_linux.go
@@ -0,0 +1,110 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build posix || aix || linux || dragonfly || freebsd || (js && wasm) || netbsd || openbsd || solaris || wasip1
+// +build posix aix linux dragonfly freebsd js,wasm netbsd openbsd solaris wasip1
+
+package os
+
+import (
+	"errors"
+	"runtime"
+	"syscall"
+)
+
+// The only signal values guaranteed to be present in the os package on all
+// systems are os.Interrupt (send the process an interrupt) and os.Kill (force
+// the process to exit). On Windows, sending os.Interrupt to a process with
+// os.Process.Signal is not implemented; it will return an error instead of
+// sending a signal.
+var (
+	Interrupt Signal = syscall.SIGINT
+	Kill      Signal = syscall.SIGKILL
+)
+
+// Keep compatible with golang and always succeed and return new proc with pid on Linux.
+func findProcess(pid int) (*Process, error) {
+	return &Process{Pid: pid}, nil
+}
+
+func (p *Process) release() error {
+	// NOOP for unix.
+	p.Pid = -1
+	// no need for a finalizer anymore
+	runtime.SetFinalizer(p, nil)
+	return nil
+}
+
+// This function is a wrapper around the forkExec function, which is a wrapper around the fork and execve system calls.
+// The StartProcess function creates a new process by forking the current process and then calling execve to replace the current process with the new process.
+// It thereby replaces the newly created process with the specified command and arguments.
+// Differences to upstream golang implementation (https://cs.opensource.google/go/go/+/master:src/syscall/exec_unix.go;l=143):
+// * No setting of Process Attributes
+// * Ignoring Ctty
+// * No ForkLocking (might be introduced by #4273)
+// * No parent-child communication via pipes (TODO)
+// * No waiting for crashes child processes to prohibit zombie process accumulation / Wait status checking (TODO)
+func forkExec(argv0 string, argv []string, attr *ProcAttr) (pid int, err error) {
+	var (
+		ret uintptr
+	)
+
+	if len(argv) == 0 {
+		return 0, errors.New("exec: no argv")
+	}
+
+	if attr == nil {
+		attr = new(ProcAttr)
+	}
+
+	argv0p, err := syscall.BytePtrFromString(argv0)
+	if err != nil {
+		return 0, err
+	}
+	argvp, err := syscall.SlicePtrFromStrings(argv)
+	if err != nil {
+		return 0, err
+	}
+	envp, err := syscall.SlicePtrFromStrings(attr.Env)
+	if err != nil {
+		return 0, err
+	}
+
+	if (runtime.GOOS == "freebsd" || runtime.GOOS == "dragonfly") && len(argv) > 0 && len(argv[0]) > len(argv0) {
+		argvp[0] = argv0p
+	}
+
+	ret = syscall.Fork()
+	if int(ret) < 0 {
+		return 0, errors.New("fork failed")
+	}
+
+	if int(ret) != 0 {
+		// if fd == 0 code runs in parent
+		return int(ret), nil
+	} else {
+		// else code runs in child, which then should exec the new process
+		ret = syscall.Execve(argv0, argv, envp)
+		if int(ret) != 0 {
+			// exec failed
+			return int(ret), errors.New("exec failed")
+		}
+		// 3. TODO: use pipes to communicate back child status
+		return int(ret), nil
+	}
+}
+
+// In Golang, the idiomatic way to create a new process is to use the StartProcess function.
+// Since the Model of operating system processes in tinygo differs from the one in Golang, we need to implement the StartProcess function differently.
+// The startProcess function is a wrapper around the forkExec function, which is a wrapper around the fork and execve system calls.
+// The StartProcess function creates a new process by forking the current process and then calling execve to replace the current process with the new process.
+// It thereby replaces the newly created process with the specified command and arguments.
+func startProcess(name string, argv []string, attr *ProcAttr) (p *Process, err error) {
+	pid, err := forkExec(name, argv, attr)
+	if err != nil {
+		return nil, err
+	}
+
+	return findProcess(pid)
+}
diff --git a/src/os/exec_linux_test.go b/src/os/exec_linux_test.go
new file mode 100644
index 0000000000..655eab427e
--- /dev/null
+++ b/src/os/exec_linux_test.go
@@ -0,0 +1,29 @@
+package os_test
+
+import (
+	. "os"
+	"runtime"
+	"testing"
+)
+
+// Test the functionality of the forkExec function, which is used to fork and exec a new process.
+// This test is not run on Windows, as forkExec is not supported on Windows.
+// This test is not run on Plan 9, as forkExec is not supported on Plan 9.
+func TestForkExec(t *testing.T) {
+	if runtime.GOOS != "linux" {
+		t.Logf("skipping test on %s", runtime.GOOS)
+		return
+	}
+
+	proc, err := StartProcess("echo", []string{"echo", "hello", "world"}, &ProcAttr{})
+	if err != nil {
+		t.Fatalf("forkExec failed: %v", err)
+		return
+	}
+
+	if proc.Pid == 0 {
+		t.Fatalf("forkExec failed: new process has pid 0")
+	}
+
+	t.Logf("forkExec succeeded: new process has pid %d", proc)
+}
diff --git a/src/os/exec_other.go b/src/os/exec_other.go
new file mode 100644
index 0000000000..5e16773a3c
--- /dev/null
+++ b/src/os/exec_other.go
@@ -0,0 +1,21 @@
+//go:build !aix && !android && !freebsd && !linux && !netbsd && !openbsd && !plan9 && !solaris
+// +build !aix,!android,!freebsd,!linux,!netbsd,!openbsd,!plan9,!solaris
+
+package os
+
+func findProcess(pid int) (*Process, error) {
+	return &Process{Pid: pid}, nil
+}
+
+func (p *Process) release() error {
+	p.Pid = -1
+	return nil
+}
+
+func forkExec(_ string, _ []string, _ *ProcAttr) (pid int, err error) {
+	return 0, ErrNotImplemented
+}
+
+func startProcess(_ string, _ []string, _ *ProcAttr) (proc *Process, err error) {
+	return &Process{Pid: 0}, ErrNotImplemented
+}
diff --git a/src/os/exec_posix.go b/src/os/exec_posix.go
deleted file mode 100644
index 720368572b..0000000000
--- a/src/os/exec_posix.go
+++ /dev/null
@@ -1,35 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build aix || darwin || dragonfly || freebsd || (js && wasm) || linux || netbsd || openbsd || solaris || wasip1 || wasip2 || windows
-
-package os
-
-import (
-	"runtime"
-	"syscall"
-)
-
-// The only signal values guaranteed to be present in the os package on all
-// systems are os.Interrupt (send the process an interrupt) and os.Kill (force
-// the process to exit). On Windows, sending os.Interrupt to a process with
-// os.Process.Signal is not implemented; it will return an error instead of
-// sending a signal.
-var (
-	Interrupt Signal = syscall.SIGINT
-	Kill      Signal = syscall.SIGKILL
-)
-
-// Keep compatible with golang and always succeed and return new proc with pid on Linux.
-func findProcess(pid int) (*Process, error) {
-	return &Process{Pid: pid}, nil
-}
-
-func (p *Process) release() error {
-	// NOOP for unix.
-	p.Pid = -1
-	// no need for a finalizer anymore
-	runtime.SetFinalizer(p, nil)
-	return nil
-}
diff --git a/src/os/signal/signal_linux.go b/src/os/signal/signal_linux.go
new file mode 100644
index 0000000000..391fb5c7d9
--- /dev/null
+++ b/src/os/signal/signal_linux.go
@@ -0,0 +1,54 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build !plan9 && !windows && !js && !wasm && !wasip1 && !wasip2
+// +build !plan9,!windows,!js,!wasm,!wasip1,!wasip2
+
+package signal
+
+import (
+	"os"
+	"syscall"
+)
+
+const (
+	numSig = 65 // max across all systems
+)
+
+type Signal interface {
+	String() string
+	Signal() // to distinguish from other Stringers
+}
+
+// Defined by the runtime package and used by syscall/sigqueue.go.
+func signal_disable(uint32)
+func signal_enable(uint32)
+func signal_ignore(uint32)
+func signal_ignored(uint32) bool
+func signal_recv() uint32
+
+func signum(sig os.Signal) int {
+	switch sig := sig.(type) {
+	case syscall.Signal:
+		i := int(sig)
+		if i < 0 || i >= numSig {
+			return -1
+		}
+		return i
+	default:
+		return -1
+	}
+}
+
+func enableSignal(sig int) {
+	signal_enable(uint32(sig))
+}
+
+func disableSignal(sig int) {
+	signal_disable(uint32(sig))
+}
+
+func ignoreSignal(sig int) {
+	signal_ignore(uint32(sig))
+}
diff --git a/src/os/signal/signal_linux_test.go b/src/os/signal/signal_linux_test.go
new file mode 100644
index 0000000000..9c58cafd35
--- /dev/null
+++ b/src/os/signal/signal_linux_test.go
@@ -0,0 +1,30 @@
+//go:build !plan9 && !windows && !js && !wasm && !wasip1 && !wasip2
+// +build !plan9,!windows,!js,!wasm,!wasip1,!wasip2
+
+package signal
+
+import (
+	"runtime"
+	"testing"
+)
+
+// The file sigqueue.go contains preliminary stubs for signal handling.
+// Since tinygo ultimately lacks support for signals, these stubs are
+// placeholders for future work.
+// There might be userland applications that rely on these functions
+// from the upstream go package os/signal that we want to enable
+// building and linking.
+
+func TestSignalHandling(t *testing.T) {
+	if runtime.GOOS == "wasip1" || runtime.GOOS == "wasip2" {
+		t.Skip()
+	}
+
+	// This test is a placeholder for future work.
+	// It is here to ensure that the stubs in sigqueue.go
+	// are correctly linked and can be called from userland
+	// applications.
+	enableSignal(0)
+	disableSignal(0)
+	ignoreSignal(0)
+}
diff --git a/src/runtime/sigqueue.go b/src/runtime/sigqueue.go
new file mode 100644
index 0000000000..ff789a605f
--- /dev/null
+++ b/src/runtime/sigqueue.go
@@ -0,0 +1,26 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build !plan9
+// +build !plan9
+
+package runtime
+
+// Stub definitions copied from upstream golang
+// TODO: implement a minimal functional version of these functions
+
+// go: linkname os/signal.signal_disable signal_disable
+func signal_disable(_ uint32) {}
+
+// go: linkname os/signal.signal_enable signal_enable
+func signal_enable(_ uint32) {}
+
+// go: linkname os/signal.signal_ignore signal_ignore
+func signal_ignore(_ uint32) {}
+
+// go: linkname os/signal.signal_ignored signal_ignored
+func signal_ignored(_ uint32) bool { return true }
+
+// go: linkname os/signal.signal_recv signal_recv
+func signal_recv() uint32 { return 0 }
diff --git a/src/syscall/exec_unix.go b/src/syscall/exec_unix.go
new file mode 100644
index 0000000000..2d92d5061e
--- /dev/null
+++ b/src/syscall/exec_unix.go
@@ -0,0 +1,7 @@
+//go:build unix
+
+package syscall
+
+// Implemented in runtime package.
+func runtime_BeforeExec()
+func runtime_AfterExec()
diff --git a/src/syscall/syscall_unix.go b/src/syscall/syscall_unix.go
index 23d81fb891..e16e7ea387 100644
--- a/src/syscall/syscall_unix.go
+++ b/src/syscall/syscall_unix.go
@@ -1,5 +1,10 @@
+//go:build linux || unix
+// +build linux unix
+
 package syscall
 
+import "errors"
+
 func Exec(argv0 string, argv []string, envv []string) (err error)
 
 // The two SockaddrInet* structs have been copied from the Go source tree.
@@ -16,3 +21,54 @@ type SockaddrInet6 struct {
 	Addr   [16]byte
 	raw    RawSockaddrInet6
 }
+
+func Fork() (err error) {
+	fail := int(libc_fork())
+	if fail < 0 {
+		// TODO: parse the syscall return codes
+		return errors.New("fork failed")
+	}
+	return
+}
+
+// the golang standard library does not expose interfaces for execve and fork, so we define them here the same way via the libc wrapper
+func Execve(pathname string, argv []string, envv []string) (err error) {
+	argv0 := cstring(pathname)
+
+	// transform argv and envv into the format expected by execve
+	argv1 := make([]*byte, len(argv)+1)
+	for i, arg := range argv {
+		argv1[i] = &cstring(arg)[0]
+	}
+	argv1[len(argv)] = nil
+
+	env1 := make([]*byte, len(envv)+1)
+	for i, env := range envv {
+		env1[i] = &cstring(env)[0]
+	}
+	env1[len(envv)] = nil
+
+	fail := int(libc_execve(&argv0[0], &argv1[0], &env1[0]))
+	if fail < 0 {
+		// TODO: parse the syscall return codes
+		return errors.New("fork failed")
+	}
+	return
+}
+
+func cstring(s string) []byte {
+	data := make([]byte, len(s)+1)
+	copy(data, s)
+	// final byte should be zero from the initial allocation
+	return data
+}
+
+// pid_t fork(void);
+//
+//export fork
+func libc_fork() int32
+
+// int execve(const char *filename, char *const argv[], char *const envp[]);
+//
+//export execve
+func libc_execve(filename *byte, argv **byte, envp **byte) int