+++ /dev/null
-dnl Alpha EV5 __gmpn_rshift -- Shift a number right.
-
-dnl Copyright (C) 1994, 1995, 2000 Free Software Foundation, Inc.
-
-dnl This file is part of the GNU MP Library.
-
-dnl The GNU MP Library is free software; you can redistribute it and/or modify
-dnl it under the terms of the GNU Lesser General Public License as published by
-dnl the Free Software Foundation; either version 2.1 of the License, or (at your
-dnl option) any later version.
-
-dnl The GNU MP Library is distributed in the hope that it will be useful, but
-dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
-dnl License for more details.
-
-dnl You should have received a copy of the GNU Lesser General Public License
-dnl along with the GNU MP Library; see the file COPYING.LIB. If not, write to
-dnl the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-dnl MA 02111-1307, USA.
-
-include(`../config.m4')
-
-dnl INPUT PARAMETERS
-dnl res_ptr r16
-dnl s1_ptr r17
-dnl size r18
-dnl cnt r19
-
-dnl This code runs at 3.25 cycles/limb on the EV5.
-
-ASM_START()
-PROLOGUE(mpn_rshift)
- ldq r4,0(r17) C load first limb
- subq r31,r19,r20
- subq r18,1,r18
- and r18,4-1,r28 C number of limbs in first loop
- sll r4,r20,r0 C compute function result
-
- beq r28,$L0
- subq r18,r28,r18
-
- ALIGN(8)
-$Loop0: ldq r3,8(r17)
- addq r16,8,r16
- srl r4,r19,r5
- addq r17,8,r17
- subq r28,1,r28
- sll r3,r20,r6
- bis r3,r3,r4
- bis r5,r6,r8
- stq r8,-8(r16)
- bne r28,$Loop0
-
-$L0: srl r4,r19,r24
- beq r18,$Lend
-C warm up phase 1
- ldq r1,8(r17)
- subq r18,4,r18
- ldq r2,16(r17)
- ldq r3,24(r17)
- ldq r4,32(r17)
- beq r18,$Lend1
-C warm up phase 2
- sll r1,r20,r7
- srl r1,r19,r21
- sll r2,r20,r8
- ldq r1,40(r17)
- srl r2,r19,r22
- ldq r2,48(r17)
- sll r3,r20,r5
- bis r7,r24,r7
- srl r3,r19,r23
- bis r8,r21,r8
- sll r4,r20,r6
- ldq r3,56(r17)
- srl r4,r19,r24
- ldq r4,64(r17)
- subq r18,4,r18
- beq r18,$Lend2
- ALIGN(16)
-C main loop
-$Loop: stq r7,0(r16)
- bis r5,r22,r5
- stq r8,8(r16)
- bis r6,r23,r6
-
- sll r1,r20,r7
- subq r18,4,r18
- srl r1,r19,r21
- unop C ldq r31,-96(r17)
-
- sll r2,r20,r8
- ldq r1,72(r17)
- srl r2,r19,r22
- ldq r2,80(r17)
-
- stq r5,16(r16)
- bis r7,r24,r7
- stq r6,24(r16)
- bis r8,r21,r8
-
- sll r3,r20,r5
- unop C ldq r31,-96(r17)
- srl r3,r19,r23
- addq r16,32,r16
-
- sll r4,r20,r6
- ldq r3,88(r17)
- srl r4,r19,r24
- ldq r4,96(r17)
-
- addq r17,32,r17
- bne r18,$Loop
-C cool down phase 2/1
-$Lend2: stq r7,0(r16)
- bis r5,r22,r5
- stq r8,8(r16)
- bis r6,r23,r6
- sll r1,r20,r7
- srl r1,r19,r21
- sll r2,r20,r8
- srl r2,r19,r22
- stq r5,16(r16)
- bis r7,r24,r7
- stq r6,24(r16)
- bis r8,r21,r8
- sll r3,r20,r5
- srl r3,r19,r23
- sll r4,r20,r6
- srl r4,r19,r24
-C cool down phase 2/2
- stq r7,32(r16)
- bis r5,r22,r5
- stq r8,40(r16)
- bis r6,r23,r6
- stq r5,48(r16)
- stq r6,56(r16)
-C cool down phase 2/3
- stq r24,64(r16)
- ret r31,(r26),1
-
-C cool down phase 1/1
-$Lend1: sll r1,r20,r7
- srl r1,r19,r21
- sll r2,r20,r8
- srl r2,r19,r22
- sll r3,r20,r5
- bis r7,r24,r7
- srl r3,r19,r23
- bis r8,r21,r8
- sll r4,r20,r6
- srl r4,r19,r24
-C cool down phase 1/2
- stq r7,0(r16)
- bis r5,r22,r5
- stq r8,8(r16)
- bis r6,r23,r6
- stq r5,16(r16)
- stq r6,24(r16)
- stq r24,32(r16)
- ret r31,(r26),1
-
-$Lend: stq r24,0(r16)
- ret r31,(r26),1
-EPILOGUE(mpn_rshift)
-ASM_END()
projects / ghc-hetmet.git / blobdiff