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Diffstat (limited to 'arch/c6x/lib/mpyll.S')
| -rw-r--r-- | arch/c6x/lib/mpyll.S | 37 |
1 files changed, 0 insertions, 37 deletions
diff --git a/arch/c6x/lib/mpyll.S b/arch/c6x/lib/mpyll.S deleted file mode 100644 index d07c13ec4fd4..000000000000 --- a/arch/c6x/lib/mpyll.S +++ /dev/null @@ -1,37 +0,0 @@ -;; 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) |