Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) ;; SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) ;;  Copyright (C) 2010 Texas Instruments Incorporated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) ;;  Contributed by Mark Salter <msalter@redhat.com>.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #include <linux/linkage.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 	;; uint64_t __c6xabi_mpyll(uint64_t x, uint64_t y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 	;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 	;; 64x64 multiply
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 	;; First compute partial results using 32-bit parts of x and y:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 	;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 	;;   b63	 b32 b31	  b0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 	;;    -----------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	;;    |      1	    |	   0	  |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	;;    -----------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	;;   P0 = X0*Y0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	;;   P1 = X0*Y1 + X1*Y0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	;;   P2 = X1*Y1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	;;   result = (P2 << 64) + (P1 << 32) + P0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	;; Since the result is also 64-bit, we can skip the P2 term.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	.text
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) ENTRY(__c6xabi_mpyll)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	mpy32u	.m1x	A4,B4,A1:A0	; X0*Y0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	b	.s2	B3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)  ||	mpy32u	.m2x	B5,A4,B1:B0	; X0*Y1 (don't need upper 32-bits)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)  ||	mpy32u	.m1x	A5,B4,A3:A2	; X1*Y0 (don't need upper 32-bits)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	mv	.s1	A0,A4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	add	.l1x	A2,B0,A5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	add	.s1	A1,A5,A5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) ENDPROC(__c6xabi_mpyll)