diff --git a/sim/cris/ChangeLog b/sim/cris/ChangeLog
index 4cad5c8eb45..81ae5e6f267 100644
--- a/sim/cris/ChangeLog
+++ b/sim/cris/ChangeLog
@@ -1,3 +1,7 @@
+2021-05-04  Tom Tromey  <tromey@adacore.com>
+
+	* mloop.in: Include <stdlib.h>.
+
 2021-05-04  Mike Frysinger  <vapier@gentoo.org>
 
 	* configure: Regenerate.
diff --git a/sim/cris/mloop.in b/sim/cris/mloop.in
index 32f5fef95f3..645d8211606 100644
--- a/sim/cris/mloop.in
+++ b/sim/cris/mloop.in
@@ -42,6 +42,8 @@ case "x$1" in
 xsupport)
 
 cat <<EOF
+#include <stdlib.h>
+
 /* It seems we don't have a templated header file corresponding to
    cris-tmpl.c, so we have to get out declarations the hackish way.  */
 extern void @cpu@_specific_init (SIM_CPU *current_cpu);
diff --git a/sim/iq2000/ChangeLog b/sim/iq2000/ChangeLog
index 550be28f654..5dbfb7a69be 100644
--- a/sim/iq2000/ChangeLog
+++ b/sim/iq2000/ChangeLog
@@ -1,3 +1,7 @@
+2021-05-04  Tom Tromey  <tromey@adacore.com>
+
+	* mloop.in: Include <stdlib.h>.
+
 2021-05-04  Mike Frysinger  <vapier@gentoo.org>
 
 	* configure: Regenerate.
diff --git a/sim/iq2000/mloop.in b/sim/iq2000/mloop.in
index b973fa106ab..7d3a9b5e9a1 100644
--- a/sim/iq2000/mloop.in
+++ b/sim/iq2000/mloop.in
@@ -40,6 +40,7 @@ case "x$1" in
 xsupport)
 
 cat <<EOF
+#include <stdlib.h>
 
 static INLINE const IDESC *
 extract (SIM_CPU *current_cpu, PCADDR pc, CGEN_INSN_INT insn, ARGBUF *abuf,
diff --git a/sim/lm32/ChangeLog b/sim/lm32/ChangeLog
index eac37deb417..f169b1b2405 100644
--- a/sim/lm32/ChangeLog
+++ b/sim/lm32/ChangeLog
@@ -1,3 +1,7 @@
+2021-05-04  Tom Tromey  <tromey@adacore.com>
+
+	* mloop.in: Include <stdlib.h>.
+
 2021-05-04  Mike Frysinger  <vapier@gentoo.org>
 
 	* configure: Regenerate.
diff --git a/sim/lm32/mloop.in b/sim/lm32/mloop.in
index a8db7f51768..574f00a5119 100644
--- a/sim/lm32/mloop.in
+++ b/sim/lm32/mloop.in
@@ -32,6 +32,7 @@ case "x$1" in
 xsupport)
 
 cat <<EOF
+#include <stdlib.h>
 
 static INLINE const IDESC *
 extract (SIM_CPU *current_cpu, PCADDR pc, CGEN_INSN_INT insn,
diff --git a/sim/m32r/ChangeLog b/sim/m32r/ChangeLog
index e247deb034c..9737efb2fb6 100644
--- a/sim/m32r/ChangeLog
+++ b/sim/m32r/ChangeLog
@@ -1,3 +1,7 @@
+2021-05-04  Tom Tromey  <tromey@adacore.com>
+
+	* mloop.in: Include <stdlib.h>.
+
 2021-05-04  Mike Frysinger  <vapier@gentoo.org>
 
 	* configure: Regenerate.
diff --git a/sim/m32r/mloop.in b/sim/m32r/mloop.in
index 405a7e92736..6b0d0dec616 100644
--- a/sim/m32r/mloop.in
+++ b/sim/m32r/mloop.in
@@ -42,6 +42,7 @@ case "x$1" in
 xsupport)
 
 cat <<EOF
+#include <stdlib.h>
 
 static INLINE const IDESC *
 extract16 (SIM_CPU *current_cpu, PCADDR pc, CGEN_INSN_INT insn,
diff --git a/sim/or1k/ChangeLog b/sim/or1k/ChangeLog
index 33f41ff6bba..55b923ddfdf 100644
--- a/sim/or1k/ChangeLog
+++ b/sim/or1k/ChangeLog
@@ -1,3 +1,7 @@
+2021-05-04  Tom Tromey  <tromey@adacore.com>
+
+	* mloop.in: Include <stdlib.h>.
+
 2021-05-04  Mike Frysinger  <vapier@gentoo.org>
 
 	* configure: Regenerate.
diff --git a/sim/or1k/mloop.in b/sim/or1k/mloop.in
index 49c42276209..a94b534a9ae 100644
--- a/sim/or1k/mloop.in
+++ b/sim/or1k/mloop.in
@@ -42,6 +42,7 @@ case "x$1" in
 xsupport)
 
 cat <<EOF
+#include <stdlib.h>
 
 static INLINE const IDESC *
 extract (SIM_CPU *current_cpu, PCADDR pc, CGEN_INSN_INT insn,