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diff --git a/arch/c6x/lib/mpyll.S b/arch/c6x/lib/mpyll.S
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-;; SPDX-License-Identifier: GPL-2.0-or-later
-;; Copyright (C) 2010 Texas Instruments Incorporated
-;; Contributed by Mark Salter <msalter@redhat.com>.
-;;
-
-#include <linux/linkage.h>
-
- ;; uint64_t __c6xabi_mpyll(uint64_t x, uint64_t y)
- ;;
- ;; 64x64 multiply
- ;; First compute partial results using 32-bit parts of x and y:
- ;;
- ;; b63 b32 b31 b0
- ;; -----------------------------
- ;; | 1 | 0 |
- ;; -----------------------------
- ;;
- ;; P0 = X0*Y0
- ;; P1 = X0*Y1 + X1*Y0
- ;; P2 = X1*Y1
- ;;
- ;; result = (P2 << 64) + (P1 << 32) + P0
- ;;
- ;; Since the result is also 64-bit, we can skip the P2 term.
-
- .text
-ENTRY(__c6xabi_mpyll)
- mpy32u .m1x A4,B4,A1:A0 ; X0*Y0
- b .s2 B3
- || mpy32u .m2x B5,A4,B1:B0 ; X0*Y1 (don't need upper 32-bits)
- || mpy32u .m1x A5,B4,A3:A2 ; X1*Y0 (don't need upper 32-bits)
- nop
- nop
- mv .s1 A0,A4
- add .l1x A2,B0,A5
- add .s1 A1,A5,A5
-ENDPROC(__c6xabi_mpyll)