diff --git a/sim/arm/ChangeLog b/sim/arm/ChangeLog
index 9d98bcd839..75fcec27c6 100644
--- a/sim/arm/ChangeLog
+++ b/sim/arm/ChangeLog
@@ -1,3 +1,7 @@
+2021-01-04  Mike Frysinger  <vapier@gentoo.org>
+
+	* iwmmxt.c: Include stdlib.h.
+
 2021-01-04  Mike Frysinger  <vapier@gentoo.org>
 
 	* configure: Regenerate.
diff --git a/sim/arm/iwmmxt.c b/sim/arm/iwmmxt.c
index 0362cf07ab..8e81824864 100644
--- a/sim/arm/iwmmxt.c
+++ b/sim/arm/iwmmxt.c
@@ -15,6 +15,7 @@
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>. */
 
+#include <stdlib.h>
 #include <string.h>
 
 #include "armdefs.h"
diff --git a/sim/bfin/ChangeLog b/sim/bfin/ChangeLog
index d82bc5ee74..b000b82d7b 100644
--- a/sim/bfin/ChangeLog
+++ b/sim/bfin/ChangeLog
@@ -1,3 +1,7 @@
+2021-01-04  Mike Frysinger  <vapier@gentoo.org>
+
+	* dv-bfin_dma.c: Include stdlib.h.
+
 2021-01-02  Mike Frysinger  <vapier@gentoo.org>
 
 	* interp.c: Change ALIGN to align_up.
diff --git a/sim/bfin/dv-bfin_dma.c b/sim/bfin/dv-bfin_dma.c
index 06fe5ed738..e3834d7614 100644
--- a/sim/bfin/dv-bfin_dma.c
+++ b/sim/bfin/dv-bfin_dma.c
@@ -20,6 +20,8 @@
 
 #include "config.h"
 
+#include <stdlib.h>
+
 #include "sim-main.h"
 #include "devices.h"
 #include "hw-device.h"
diff --git a/sim/testsuite/sim/bfin/ChangeLog b/sim/testsuite/sim/bfin/ChangeLog
index 4fc604f9af..b8fdc04723 100644
--- a/sim/testsuite/sim/bfin/ChangeLog
+++ b/sim/testsuite/sim/bfin/ChangeLog
@@ -1,3 +1,7 @@
+2021-01-04  Mike Frysinger  <vapier@gentoo.org>
+
+	* mdma-skel.h: Include stdlib.h.
+
 2015-10-11  Mike Frysinger  <vapier@gentoo.org>
 
 	PR sim/18407
diff --git a/sim/testsuite/sim/bfin/mdma-skel.h b/sim/testsuite/sim/bfin/mdma-skel.h
index 399cddc955..920eff2711 100644
--- a/sim/testsuite/sim/bfin/mdma-skel.h
+++ b/sim/testsuite/sim/bfin/mdma-skel.h
@@ -1,3 +1,4 @@
+#include <stdlib.h>
 #include <string.h>
 
 void _mdma_memcpy (bu32 dst, bu32 src, bu32 size, bs16 mod)