diff --git a/arch/hexagon/bits/alltypes.h.in b/arch/hexagon/bits/alltypes.h.in
index 1e07f2c8..99dff81e 100644
--- a/arch/hexagon/bits/alltypes.h.in
+++ b/arch/hexagon/bits/alltypes.h.in
@@ -23,3 +23,6 @@ TYPEDEF struct { __attribute__((__aligned__(8))) long long __ll; long double __l
 #else
 TYPEDEF struct { alignas(8) long long __ll; long double __ld; } max_align_t;
 #endif
+
+TYPEDEF long time_t;
+TYPEDEF long suseconds_t;
diff --git a/arch/hexagon/bits/sem.h b/arch/hexagon/bits/sem.h
new file mode 100644
index 00000000..65661542
--- /dev/null
+++ b/arch/hexagon/bits/sem.h
@@ -0,0 +1,13 @@
+struct semid_ds {
+	struct ipc_perm sem_perm;
+	unsigned long __sem_otime_lo;
+	unsigned long __sem_otime_hi;
+	unsigned long __sem_ctime_lo;
+	unsigned long __sem_ctime_hi;
+	unsigned short sem_nsems;
+	char __sem_nsems_pad[sizeof(long)-sizeof(short)];
+	long __unused3;
+	long __unused4;
+	time_t sem_otime;
+	time_t sem_ctime;
+};