diff --git a/plat/osx386/libsys/gettimeofday.s b/plat/osx386/libsys/gettimeofday.s
index 3a4c2229f..43aff5fa9 100644
--- a/plat/osx386/libsys/gettimeofday.s
+++ b/plat/osx386/libsys/gettimeofday.s
@@ -1,7 +1,18 @@
+! The system call checks the timeval pointer but doesn't store the
+! time there.  If the pointer wasn't NULL, then the system call
+! returns the time in a pair of registers.
+
 .sect .text
 .define _gettimeofday
 _gettimeofday:
 	mov eax, 116
 	int 0x80
 	jb .set_errno
+	mov ebx, 4(esp)		! timeval pointer
+	test ebx, ebx
+	je 1f
+	mov 0(ebx), eax		! seconds
+	mov 4(ebx), edx		! microseconds
+1:
+	mov eax, 0		! return 0
 	ret
diff --git a/plat/osxppc/libsys/gettimeofday.s b/plat/osxppc/libsys/gettimeofday.s
index c01bf5bae..178d17fdd 100644
--- a/plat/osxppc/libsys/gettimeofday.s
+++ b/plat/osxppc/libsys/gettimeofday.s
@@ -1,9 +1,19 @@
+! The system call checks the timeval pointer but doesn't store the
+! time there.  If the pointer wasn't NULL, then the system call
+! returns the time in a pair of registers.
+
 .sect .text
 .define _gettimeofday
 _gettimeofday:
 	addi r0, r0, 116	! gettimeofday
 	lwz r3, 0(sp)		! timeval pointer
 	lwz r4, 4(sp)		! timezone pointer
+	or. r5, r3, r3
 	sc 0
 	b .set_errno
+	bc 12, 2, 1f		! beq 1f
+	stw r3, 0(r5)		! seconds
+	stw r4, 4(r5)		! microseconds
+1:
+	addi r3, r0, 0		! return 0
 	bclr 20, 0, 0