diff --git a/common/usb_util.h b/common/usb_util.h
index 790dfe54..f19c5079 100644
--- a/common/usb_util.h
+++ b/common/usb_util.h
@@ -44,12 +44,12 @@
 #ifndef __ALIGNED
 #define __ALIGNED(x) __attribute__((aligned(x)))
 #endif
-#elif defined(__ICCARM__)
+#elif defined(__ICCARM__) || defined(__ICCRX__)
 #ifndef __USED
 #if __ICCARM_V8
 #define __USED __attribute__((used))
 #else
-#define __USED _Pragma("__root")
+#define __USED __root
 #endif
 #endif
 
diff --git a/core/usbh_core.c b/core/usbh_core.c
index f9bfb3f1..11e12497 100644
--- a/core/usbh_core.c
+++ b/core/usbh_core.c
@@ -689,6 +689,11 @@ int usbh_initialize(void)
     extern uint32_t __usbh_class_info_end__;
     usbh_class_info_table_begin = (struct usbh_class_info *)&__usbh_class_info_start__;
     usbh_class_info_table_end = (struct usbh_class_info *)&__usbh_class_info_end__;
+#elif defined(__ICCARM__) || defined(__ICCRX__)
+    extern uint32_t __usbh_class_info_start__;
+    extern uint32_t __usbh_class_info_end__;
+    usbh_class_info_table_begin = (struct usbh_class_info *)__section_begin("usbh_class_info");
+    usbh_class_info_table_end = (struct usbh_class_info *)__section_end("usbh_class_info");
 #endif
 
     /* devaddr 1 is for roothub */
diff --git a/core/usbh_core.h b/core/usbh_core.h
index 0fd1ba0c..99f3a350 100644
--- a/core/usbh_core.h
+++ b/core/usbh_core.h
@@ -39,6 +39,9 @@ extern "C" {
 #define CLASS_INFO_DEFINE __attribute__((section("usbh_class_info"))) __USED __ALIGNED(1)
 #elif defined(__GNUC__)
 #define CLASS_INFO_DEFINE __attribute__((section(".usbh_class_info"))) __USED __ALIGNED(1)
+#elif defined(__ICCARM__) || defined(__ICCRX__)
+#pragma section="usbh_class_info"
+#define CLASS_INFO_DEFINE __attribute__((section("usbh_class_info"))) __USED __ALIGNED(1)
 #endif
 
 static inline void usbh_control_urb_fill(struct usbh_urb *urb,