diff --git a/src/syscall/mksyscall.pl b/src/syscall/mksyscall.pl
index 73d4b0f6e3..47efbffcbc 100755
--- a/src/syscall/mksyscall.pl
+++ b/src/syscall/mksyscall.pl
@@ -85,6 +85,9 @@ if($ARGV[0] =~ /^-/) {
 if($libc) {
 	$extraimports = 'import "internal/abi"';
 }
+if($darwin) {
+	$extraimports .= "\nimport \"runtime\"";
+}
 
 sub parseparamlist($) {
 	my ($list) = @_;
@@ -137,7 +140,7 @@ while(<>) {
 	# without reading the header.
 	$text .= "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n";
 
-	if (($darwin && $func =~ /^ptrace1(Ptr)?$/) || (($openbsd && $libc) && $func =~ /^ptrace(Ptr)?$/)) {
+	if ((($darwin || ($openbsd && $libc)) && $func =~ /^ptrace(Ptr)?$/)) {
 		# The ptrace function is called from forkAndExecInChild where stack
 		# growth is forbidden.
 		$text .= "//go:nosplit\n"
@@ -147,6 +150,13 @@ while(<>) {
 	my $out_decl = @out ? sprintf(" (%s)", join(', ', @out)) : "";
 	$text .= sprintf "func %s(%s)%s {\n", $func, join(', ', @in), $out_decl;
 
+	# Disable ptrace on iOS.
+	if ($darwin && $func =~ /^ptrace(Ptr)?$/) {
+		$text .= "\tif runtime.GOOS == \"ios\" {\n";
+		$text .= "\t\tpanic(\"unimplemented\")\n";
+		$text .= "\t}\n";
+	}
+
 	# Check if err return available
 	my $errvar = "";
 	foreach my $p (@out) {
diff --git a/src/syscall/ptrace_darwin.go b/src/syscall/ptrace_darwin.go
deleted file mode 100644
index 519e451c73..0000000000
--- a/src/syscall/ptrace_darwin.go
+++ /dev/null
@@ -1,14 +0,0 @@
-// Copyright 2020 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 !ios
-
-package syscall
-
-// Nosplit because it is called from forkAndExecInChild.
-//
-//go:nosplit
-func ptrace(request int, pid int, addr uintptr, data uintptr) error {
-	return ptrace1(request, pid, addr, data)
-}
diff --git a/src/syscall/ptrace_ios.go b/src/syscall/ptrace_ios.go
deleted file mode 100644
index fa8d000715..0000000000
--- a/src/syscall/ptrace_ios.go
+++ /dev/null
@@ -1,14 +0,0 @@
-// Copyright 2020 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 ios
-
-package syscall
-
-// Nosplit because it is called from forkAndExecInChild.
-//
-//go:nosplit
-func ptrace(request int, pid int, addr uintptr, data uintptr) (err error) {
-	panic("unimplemented")
-}
diff --git a/src/syscall/syscall_darwin_amd64.go b/src/syscall/syscall_darwin_amd64.go
index ef3c1998aa..64e54ad730 100644
--- a/src/syscall/syscall_darwin_amd64.go
+++ b/src/syscall/syscall_darwin_amd64.go
@@ -24,7 +24,7 @@ func setTimeval(sec, usec int64) Timeval {
 //sys	Stat(path string, stat *Stat_t) (err error) = SYS_stat64
 //sys	Statfs(path string, stat *Statfs_t) (err error) = SYS_statfs64
 //sys   fstatat(fd int, path string, stat *Stat_t, flags int) (err error) = SYS_fstatat64
-//sys   ptrace1(request int, pid int, addr uintptr, data uintptr) (err error) = SYS_ptrace
+//sys   ptrace(request int, pid int, addr uintptr, data uintptr) (err error)
 
 func SetKevent(k *Kevent_t, fd, mode, flags int) {
 	k.Ident = uint64(fd)
diff --git a/src/syscall/syscall_darwin_arm64.go b/src/syscall/syscall_darwin_arm64.go
index cea42772bb..913c748374 100644
--- a/src/syscall/syscall_darwin_arm64.go
+++ b/src/syscall/syscall_darwin_arm64.go
@@ -24,7 +24,7 @@ func setTimeval(sec, usec int64) Timeval {
 //sys	Stat(path string, stat *Stat_t) (err error)
 //sys	Statfs(path string, stat *Statfs_t) (err error)
 //sys	fstatat(fd int, path string, stat *Stat_t, flags int) (err error)
-//sys	ptrace1(request int, pid int, addr uintptr, data uintptr) (err error) = SYS_ptrace
+//sys	ptrace(request int, pid int, addr uintptr, data uintptr) (err error)
 
 func SetKevent(k *Kevent_t, fd, mode, flags int) {
 	k.Ident = uint64(fd)
diff --git a/src/syscall/zsyscall_darwin_amd64.go b/src/syscall/zsyscall_darwin_amd64.go
index 3ad9bad076..8812fb12cd 100644
--- a/src/syscall/zsyscall_darwin_amd64.go
+++ b/src/syscall/zsyscall_darwin_amd64.go
@@ -7,6 +7,7 @@ package syscall
 
 import "unsafe"
 import "internal/abi"
+import "runtime"
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
@@ -2011,7 +2012,10 @@ func libc_fstatat64_trampoline()
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
 //go:nosplit
-func ptrace1(request int, pid int, addr uintptr, data uintptr) (err error) {
+func ptrace(request int, pid int, addr uintptr, data uintptr) (err error) {
+	if runtime.GOOS == "ios" {
+		panic("unimplemented")
+	}
 	_, _, e1 := syscall6(abi.FuncPCABI0(libc_ptrace_trampoline), uintptr(request), uintptr(pid), uintptr(addr), uintptr(data), 0, 0)
 	if e1 != 0 {
 		err = errnoErr(e1)
diff --git a/src/syscall/zsyscall_darwin_arm64.go b/src/syscall/zsyscall_darwin_arm64.go
index c2502c7842..22b096349d 100644
--- a/src/syscall/zsyscall_darwin_arm64.go
+++ b/src/syscall/zsyscall_darwin_arm64.go
@@ -7,6 +7,7 @@ package syscall
 
 import "unsafe"
 import "internal/abi"
+import "runtime"
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
@@ -2011,7 +2012,10 @@ func libc_fstatat_trampoline()
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
 //go:nosplit
-func ptrace1(request int, pid int, addr uintptr, data uintptr) (err error) {
+func ptrace(request int, pid int, addr uintptr, data uintptr) (err error) {
+	if runtime.GOOS == "ios" {
+		panic("unimplemented")
+	}
 	_, _, e1 := syscall6(abi.FuncPCABI0(libc_ptrace_trampoline), uintptr(request), uintptr(pid), uintptr(addr), uintptr(data), 0, 0)
 	if e1 != 0 {
 		err = errnoErr(e1)