From 3364f57d0bf5f31f91d5b1214a7a7b17e975c049 Mon Sep 17 00:00:00 2001
From: Zihao Yu <yuzihao@ict.ac.cn>
Date: Sat, 17 Jul 2021 21:53:21 +0800
Subject: [PATCH] klib,int64: fix dead recursion for riscv64-mycpu

* symbols inside int64.c are local to __udivmoddi4
---
 klib/src/int64.c | 22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/klib/src/int64.c b/klib/src/int64.c
index 51401f8..3254040 100644
--- a/klib/src/int64.c
+++ b/klib/src/int64.c
@@ -363,6 +363,7 @@ uint32_t __inline __builtin_clzll(uint64_t value) {
 
 #include <am.h>
 
+#if !defined(__riscv) || defined(__riscv_m)
 /* Returns: a / b */
 
 COMPILER_RT_ABI di_int
@@ -410,6 +411,17 @@ __udivdi3(du_int a, du_int b)
     return __udivmoddi4(a, b, 0);
 }
 
+/* Returns: a % b */
+
+COMPILER_RT_ABI du_int
+__umoddi3(du_int a, du_int b)
+{
+    du_int r;
+    __udivmoddi4(a, b, &r);
+    return r;
+}
+#endif
+
 
 COMPILER_RT_ABI du_int
 __udivmoddi4(du_int a, du_int b, du_int* rem)
@@ -621,16 +633,6 @@ __udivmoddi4(du_int a, du_int b, du_int* rem)
     return q.all;
 }
 
-/* Returns: a % b */
-
-COMPILER_RT_ABI du_int
-__umoddi3(du_int a, du_int b)
-{
-    du_int r;
-    __udivmoddi4(a, b, &r);
-    return r;
-}
-
 // Returns: the number of leading 0-bits
 
 // Precondition: a != 0