source/libs/gmp/gmp-src/mpn/powerpc64/p7/copyd.asm

   1 dnl  PowerPC-64 mpn_copyd.
   2
   3 dnl  Copyright 2004, 2005, 2013 Free Software Foundation, Inc.
   4
   5 dnl  This file is part of the GNU MP Library.
   6 dnl
   7 dnl  The GNU MP Library is free software; you can redistribute it and/or modify
   8 dnl  it under the terms of either:
   9 dnl
  10 dnl    * the GNU Lesser General Public License as published by the Free
  11 dnl      Software Foundation; either version 3 of the License, or (at your
  12 dnl      option) any later version.
  13 dnl
  14 dnl  or
  15 dnl
  16 dnl    * the GNU General Public License as published by the Free Software
  17 dnl      Foundation; either version 2 of the License, or (at your option) any
  18 dnl      later version.
  19 dnl
  20 dnl  or both in parallel, as here.
  21 dnl
  22 dnl  The GNU MP Library is distributed in the hope that it will be useful, but
  23 dnl  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  24 dnl  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  25 dnl  for more details.
  26 dnl
  27 dnl  You should have received copies of the GNU General Public License and the
  28 dnl  GNU Lesser General Public License along with the GNU MP Library.  If not,
  29 dnl  see https://www.gnu.org/licenses/.
  30
  31 include(`../config.m4')
  32
  33 C                  cycles/limb
  34 C POWER3/PPC630          ?
  35 C POWER4/PPC970          ?
  36 C POWER5                 ?
  37 C POWER6                 1.25
  38 C POWER7                 1.09
  39
  40 C INPUT PARAMETERS
  41 define(`rp',    `r3')
  42 define(`up',    `r4')
  43 define(`n',     `r5')
  44
  45 ASM_START()
  46 PROLOGUE(mpn_copyd)
  47
  48 ifdef(`HAVE_ABI_mode32',
  49 `       rldicl  n, n, 0,32')
  50
  51         sldi    r0, n, 3
  52         add     up, up, r0              C point at u[] end
  53         add     rp, rp, r0              C point at r[] end
  54
  55         cmpdi   cr0, n, 4
  56         blt     L(sml)
  57
  58         addi    r10, n, 4
  59         srdi    r10, r10, 3
  60         mtctr   r10
  61
  62         andi.   r0, n, 1
  63         rlwinm  r11, n, 0,30,30
  64         rlwinm  r12, n, 0,29,29
  65         cmpdi   cr6, r11, 0
  66         cmpdi   cr7, r12, 0
  67
  68         beq     cr0, L(xx0)
  69 L(xx1): ld      r6, -8(up)
  70         addi    up, up, -8
  71         std     r6, -8(rp)
  72         addi    rp, rp, -8
  73
  74 L(xx0): bne     cr6, L(x10)
  75 L(x00): ld      r6, -8(up)
  76         ld      r7, -16(up)
  77         bne     cr7, L(100)
  78 L(000): addi    rp, rp, 32
  79         b       L(lo0)
  80 L(100): addi    up, up, 32
  81         b       L(lo4)
  82 L(x10): ld      r8, -8(up)
  83         ld      r9, -16(up)
  84         bne     cr7, L(110)
  85 L(010): addi    up, up, -16
  86         addi    rp, rp, 16
  87         b       L(lo2)
  88 L(110): addi    up, up, 16
  89         addi    rp, rp, 48
  90         b       L(lo6)
  91
  92 L(sml): cmpdi   cr0, n, 0
  93         beqlr-  cr0
  94         mtctr   n
  95 L(t):   ld      r6, -8(up)
  96         addi    up, up, -8
  97         std     r6, -8(rp)
  98         addi    rp, rp, -8
  99         bdnz    L(t)
 100         blr
 101
 102         ALIGN(32)
 103 L(top): std     r6, -8(rp)
 104         std     r7, -16(rp)
 105 L(lo2): ld      r6, -8(up)
 106         ld      r7, -16(up)
 107         std     r8, -24(rp)
 108         std     r9, -32(rp)
 109 L(lo0): ld      r8, -24(up)
 110         ld      r9, -32(up)
 111         std     r6, -40(rp)
 112         std     r7, -48(rp)
 113 L(lo6): ld      r6, -40(up)
 114         ld      r7, -48(up)
 115         std     r8, -56(rp)
 116         std     r9, -64(rp)
 117         addi    rp, rp, -64
 118 L(lo4): ld      r8, -56(up)
 119         ld      r9, -64(up)
 120         addi    up, up, -64
 121         bdnz    L(top)
 122
 123 L(end): std     r6, -8(rp)
 124         std     r7, -16(rp)
 125         std     r8, -24(rp)
 126         std     r9, -32(rp)
 127         blr
 128 EPILOGUE()