From 3a5162b25598c41edd8f8fb5d70c67796590cc92 Mon Sep 17 00:00:00 2001
From: Ovidiu Sabou <ovidiu@sabou.org>
Date: Tue, 9 Feb 2021 23:09:10 +0200
Subject: [PATCH] Fix rust-lld: error: undefined symbol: __syscall

Encountered while building an example from stm32-rs/stm32f3xx-hal
---
 cortex-m-semihosting/src/lib.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cortex-m-semihosting/src/lib.rs b/cortex-m-semihosting/src/lib.rs
index 05455cea..a67b84d8 100644
--- a/cortex-m-semihosting/src/lib.rs
+++ b/cortex-m-semihosting/src/lib.rs
@@ -194,7 +194,7 @@ pub mod nr;
 
 #[cfg(all(thumb, not(feature = "inline-asm")))]
 extern "C" {
-    fn __syscall(nr: usize, arg: usize) -> usize;
+    fn __sh_syscall(nr: usize, arg: usize) -> usize;
 }
 
 /// Performs a semihosting operation, takes a pointer to an argument block
@@ -208,7 +208,7 @@ pub unsafe fn syscall<T>(nr: usize, arg: &T) -> usize {
 pub unsafe fn syscall1(_nr: usize, _arg: usize) -> usize {
     match () {
         #[cfg(all(thumb, not(feature = "inline-asm"), not(feature = "no-semihosting")))]
-        () => __syscall(_nr, _arg),
+        () => __sh_syscall(_nr, _arg),
 
         #[cfg(all(thumb, feature = "inline-asm", not(feature = "no-semihosting")))]
         () => {