From dbf4ed894c0fd85d421f7b3b9758ce95398d2925 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Mon, 18 Oct 2021 04:29:27 -0700 Subject: xtensa: add helpers for division, remainder and shifts Don't rely on libgcc presence, build own versions of the helpers with correct ABI. Signed-off-by: Max Filippov --- arch/xtensa/lib/lshrdi3.S | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 arch/xtensa/lib/lshrdi3.S (limited to 'arch/xtensa/lib/lshrdi3.S') diff --git a/arch/xtensa/lib/lshrdi3.S b/arch/xtensa/lib/lshrdi3.S new file mode 100644 index 000000000000..129ef8d1725b --- /dev/null +++ b/arch/xtensa/lib/lshrdi3.S @@ -0,0 +1,28 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later WITH GCC-exception-2.0 */ +#include +#include +#include + +#ifdef __XTENSA_EB__ +#define uh a2 +#define ul a3 +#else +#define uh a3 +#define ul a2 +#endif /* __XTENSA_EB__ */ + +ENTRY(__lshrdi3) + + abi_entry_default + ssr a4 + bgei a4, 32, .Lhigh_only + src ul, uh, ul + srl uh, uh + abi_ret_default + +.Lhigh_only: + srl ul, uh + movi uh, 0 + abi_ret_default + +ENDPROC(__lshrdi3) -- cgit