linux/arch/xtensa/lib/lshrdi3.S
Max Filippov dbf4ed894c 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 <jcmvbkbc@gmail.com>
2022-03-09 14:02:40 -08:00

29 lines
449 B
ArmAsm

/* SPDX-License-Identifier: GPL-2.0-or-later WITH GCC-exception-2.0 */
#include <linux/linkage.h>
#include <asm/asmmacro.h>
#include <asm/core.h>
#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)