add aliases for arm eabi long long shift functions

clang 10 on armv7 references these when building RAMDISK (-Oz) but not
GENERIC (-O2).

feedback and ok guenther@

3 files changed, 12 insertions, 0 deletions

diff --git a/sys/lib/libkern/ashrdi3.c b/sys/lib/libkern/ashrdi3.c
index f55e7813c3f..8c8e1670c6d 100644
--- a/sys/lib/libkern/ashrdi3.c
+++ b/sys/lib/libkern/ashrdi3.c
@@ -64,3 +64,7 @@ __ashrdi3(quad_t a, qshift_t shift)
 	}
 	return (aa.q);
 }
+
+#ifdef __ARM_EABI__
+__strong_alias(__aeabi_lasr, __ashrdi3);
+#endif
diff --git a/sys/lib/libkern/lshldi3.c b/sys/lib/libkern/lshldi3.c
index 7d38b506696..debbcc2c156 100644
--- a/sys/lib/libkern/lshldi3.c
+++ b/sys/lib/libkern/lshldi3.c
@@ -55,3 +55,7 @@ __lshldi3(quad_t a, qshift_t shift)
 	}
 	return (aa.q);
 }
+
+#ifdef __ARM_EABI__
+__strong_alias(__aeabi_llsl, __lshldi3);
+#endif
diff --git a/sys/lib/libkern/lshrdi3.c b/sys/lib/libkern/lshrdi3.c
index dafb446ef70..6aee85e1be4 100644
--- a/sys/lib/libkern/lshrdi3.c
+++ b/sys/lib/libkern/lshrdi3.c
@@ -54,3 +54,7 @@ __lshrdi3(quad_t a, qshift_t shift)
 	}
 	return (aa.q);
 }
+
+#ifdef __ARM_EABI__
+__strong_alias(__aeabi_llsr, __lshrdi3);
+#endif