From 57d2eb603b412a6bfbfdad7fb0bac854302b4351 Mon Sep 17 00:00:00 2001
From: Aladdin Bakosh <aladdin.bakosh@emerson.com>
Date: Mon, 15 May 2023 18:27:45 +0200
Subject: [PATCH] fix(RA Host Portable): implement missing function
 __builtin_ctz(x) for IAR

---
 src/portable/renesas/rusb2/hcd_rusb2.c | 2 +-
 src/portable/renesas/rusb2/rusb2_ra.h  | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/portable/renesas/rusb2/hcd_rusb2.c b/src/portable/renesas/rusb2/hcd_rusb2.c
index e4743223e..0e6fa1618 100644
--- a/src/portable/renesas/rusb2/hcd_rusb2.c
+++ b/src/portable/renesas/rusb2/hcd_rusb2.c
@@ -407,7 +407,7 @@ static void process_pipe0_bemp(uint8_t rhport)
 static void process_pipe_nrdy(uint8_t rhport, unsigned num)
 {
   (void)rhport;
-  unsigned result;
+  xfer_result_t result;
   uint16_t volatile *ctr = get_pipectr(num);
   // TU_LOG1("NRDY %d %x\n", num, *ctr);
   switch (*ctr & RUSB2_PIPE_CTR_PID_Msk) {
diff --git a/src/portable/renesas/rusb2/rusb2_ra.h b/src/portable/renesas/rusb2/rusb2_ra.h
index 5785850cc..5be9f11ce 100644
--- a/src/portable/renesas/rusb2/rusb2_ra.h
+++ b/src/portable/renesas/rusb2/rusb2_ra.h
@@ -36,6 +36,10 @@ extern "C" {
 
 #define RUSB2_REG_BASE (0x40090000)
 
+#if defined(__ICCARM__)
+  #define __builtin_ctz(x)             __iar_builtin_CLZ(__iar_builtin_RBIT(x))
+#endif
+
 TU_ATTR_ALWAYS_INLINE static inline void rusb2_int_enable(uint8_t rhport)
 {
   (void) rhport;