diff --git a/src/pkg/syscall/types_darwin.c b/src/pkg/syscall/types_darwin.c
index 65afd6ca6c4..e205db155f5 100644
--- a/src/pkg/syscall/types_darwin.c
+++ b/src/pkg/syscall/types_darwin.c
@@ -45,6 +45,13 @@ enum
 };
 
 
+// Basic types
+
+typedef short $_C_short;
+typedef int $_C_int;
+typedef long $_C_long;
+typedef long long $_C_long_long;
+
 // Time
 
 typedef struct timespec $Timespec;
@@ -55,7 +62,6 @@ typedef struct timeval $Timeval;
 typedef struct rusage $Rusage;
 typedef struct rlimit $Rlimit;
 
-typedef int $_C_int;
 typedef gid_t $_Gid_t;
 
 // Files
@@ -185,6 +191,14 @@ typedef struct sockaddr_any $RawSockaddrAny;
 typedef socklen_t $_Socklen;
 typedef struct linger $Linger;
 
+// Ptrace requests
+enum {
+	$_PTRACE_TRACEME = PT_TRACE_ME,
+	$_PTRACE_CONT = PT_CONTINUE,
+	$_PTRACE_KILL = PT_KILL,
+};
+
+
 // Events (kqueue, kevent)
 
 enum {
diff --git a/src/pkg/syscall/ztypes_darwin_386.go b/src/pkg/syscall/ztypes_darwin_386.go
index 29d0d96763b..87bca145fea 100644
--- a/src/pkg/syscall/ztypes_darwin_386.go
+++ b/src/pkg/syscall/ztypes_darwin_386.go
@@ -78,6 +78,9 @@ const (
 	SizeofSockaddrInet6 = 0x1c;
 	SizeofSockaddrAny = 0x1c;
 	SizeofSockaddrUnix = 0x6a;
+	_PTRACE_TRACEME = 0;
+	_PTRACE_CONT = 0x7;
+	_PTRACE_KILL = 0x8;
 	EVFILT_READ = -0x1;
 	EVFILT_WRITE = -0x2;
 	EVFILT_AIO = -0x3;
@@ -103,6 +106,14 @@ const (
 
 // Types
 
+type _C_short int16
+
+type _C_int int32
+
+type _C_long int32
+
+type _C_long_long int64
+
 type Timespec struct {
 	Sec int32;
 	Nsec int32;
@@ -137,8 +148,6 @@ type Rlimit struct {
 	Max uint64;
 }
 
-type _C_int int32
-
 type _Gid_t uint32
 
 type Stat_t struct {
diff --git a/src/pkg/syscall/ztypes_darwin_amd64.go b/src/pkg/syscall/ztypes_darwin_amd64.go
index 0523c50a4b3..81a556c8285 100644
--- a/src/pkg/syscall/ztypes_darwin_amd64.go
+++ b/src/pkg/syscall/ztypes_darwin_amd64.go
@@ -78,6 +78,9 @@ const (
 	SizeofSockaddrInet6 = 0x1c;
 	SizeofSockaddrAny = 0x1c;
 	SizeofSockaddrUnix = 0x6a;
+	_PTRACE_TRACEME = 0;
+	_PTRACE_CONT = 0x7;
+	_PTRACE_KILL = 0x8;
 	EVFILT_READ = -0x1;
 	EVFILT_WRITE = -0x2;
 	EVFILT_AIO = -0x3;
@@ -103,6 +106,14 @@ const (
 
 // Types
 
+type _C_short int16
+
+type _C_int int32
+
+type _C_long int64
+
+type _C_long_long int64
+
 type Timespec struct {
 	Sec int64;
 	Nsec int64;
@@ -138,8 +149,6 @@ type Rlimit struct {
 	Max uint64;
 }
 
-type _C_int int32
-
 type _Gid_t uint32
 
 type Stat_t struct {