arch/c6x/lib/llshr.S

   1 ;; SPDX-License-Identifier: GPL-2.0-or-later
   2 ;;  Copyright (C) 2010 Texas Instruments Incorporated
   3 ;;  Contributed by Mark Salter <msalter@redhat.com>.
   4 ;;
   5
   6 ;;  uint64_t __c6xabi_llshr(uint64_t val, uint shift)
   7
   8 #include <linux/linkage.h>
   9
  10         .text
  11 ENTRY(__c6xabi_llshr)
  12          mv     .l1x    B4,A1
  13    [!A1] b      .s2     B3              ; return if zero shift count
  14          mvk    .s1     32,A0
  15          sub    .d1     A0,A1,A0
  16          cmplt  .l1     0,A0,A2
  17    [A2]  shl    .s1     A5,A0,A0
  18          nop
  19    [!A2] neg    .l1     A0,A4
  20 || [A2]  shru   .s1     A4,A1,A4
  21    [!A2] shr    .s1     A5,A4,A4
  22 || [A2]  or     .d1     A4,A0,A4
  23    [!A2] shr    .s1     A5,0x1f,A5
  24    [A2]  shr    .s1     A5,A1,A5
  25          bnop   .s2     B3,5
  26 ENDPROC(__c6xabi_llshr)