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1.1 ! maekawa 1: ; HP-PA 2.0 64-bit __gmpn_submul_1 -- Multiply a limb vector with a limb and
! 2: ; subtract the result from a second limb vector.
! 3:
! 4: ; Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
! 5:
! 6: ; This file is part of the GNU MP Library.
! 7:
! 8: ; The GNU MP Library is free software; you can redistribute it and/or modify
! 9: ; it under the terms of the GNU Lesser General Public License as published by
! 10: ; the Free Software Foundation; either version 2.1 of the License, or (at your
! 11: ; option) any later version.
! 12:
! 13: ; The GNU MP Library is distributed in the hope that it will be useful, but
! 14: ; WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
! 15: ; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
! 16: ; License for more details.
! 17:
! 18: ; You should have received a copy of the GNU Lesser General Public License
! 19: ; along with the GNU MP Library; see the file COPYING.LIB. If not, write to
! 20: ; the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
! 21: ; MA 02111-1307, USA.
! 22:
! 23: ; INPUT PARAMETERS
! 24: #define rptr %r26
! 25: #define sptr %r25
! 26: #define size %r24
! 27: #define s2limb -56(%r30)
! 28:
! 29: ; This runs at 11 cycles/limb on a PA8000. It might be possible to make
! 30: ; it faster, but the PA8000 pipeline is not publically documented and it
! 31: ; is very complex to reverse engineer
! 32:
! 33: #define t1 %r19
! 34: #define rlimb %r20
! 35: #define hi %r21
! 36: #define lo %r22
! 37: #define m0 %r28
! 38: #define m1 %r3
! 39: #define cylimb %r29
! 40: #define t3 %r4
! 41: #define t2 %r6
! 42: #define t5 %r23
! 43: #define t4 %r31
! 44: .level 2.0n
! 45: .code
! 46: .export __gmpn_submul_1,entry
! 47: __gmpn_submul_1
! 48: .proc
! 49: .callinfo frame=128,no_calls
! 50: .entry
! 51: fldd -56(%r30),%fr5 ; s2limb passed on stack
! 52: ldo 128(%r30),%r30
! 53: add %r0,%r0,cylimb ; clear cy and cylimb
! 54:
! 55: std %r3,-96(%r30)
! 56: std %r4,-88(%r30)
! 57: std %r5,-80(%r30)
! 58: std %r6,-72(%r30)
! 59: depdi,z 1,31,1,%r5
! 60:
! 61: fldd 0(sptr),%fr4
! 62: ldo 8(sptr),sptr
! 63:
! 64: xmpyu %fr5R,%fr4R,%fr6
! 65: fstd %fr6,-128(%r30)
! 66: xmpyu %fr5R,%fr4L,%fr7
! 67: fstd %fr7,-120(%r30)
! 68: xmpyu %fr5L,%fr4R,%fr8
! 69: fstd %fr8,-112(%r30)
! 70: xmpyu %fr5L,%fr4L,%fr9
! 71: fstd %fr9,-104(%r30)
! 72: ldd -128(%r30),lo ; lo = low 64 bit of product
! 73: ldd -120(%r30),m0 ; m0 = mid0 64 bit of product
! 74: ldd -112(%r30),m1 ; m1 = mid1 64 bit of product
! 75: ldd -104(%r30),hi ; hi = high 64 bit of product
! 76: addib,= -1,%r24,L$end1
! 77: nop
! 78: fldd 0(sptr),%fr4
! 79: ldo 8(sptr),sptr
! 80: addib,= -1,%r24,L$end2
! 81: nop
! 82: L$loop
! 83: xmpyu %fr5R,%fr4R,%fr6
! 84: fstd %fr6,-128(%r30)
! 85: xmpyu %fr5R,%fr4L,%fr7
! 86: fstd %fr7,-120(%r30)
! 87: xmpyu %fr5L,%fr4R,%fr8
! 88: fstd %fr8,-112(%r30)
! 89: xmpyu %fr5L,%fr4L,%fr9
! 90: fstd %fr9,-104(%r30)
! 91: ldd 0(rptr),rlimb
! 92: extrd,u lo,31,32,t1 ; t1 = hi32(lo)
! 93: extrd,u lo,63,32,t4 ; t4 = lo32(lo)
! 94: add,l m0,t1,t1 ; t1 += m0
! 95: add,l,*nuv m1,t1,t1 ; t1 += m1
! 96: add,l %r5,hi,hi ; propagate carry
! 97: extrd,u t1,31,32,t2 ; t2 = hi32(t1)
! 98: depd,z t1,31,32,t5 ; t5 = lo32(t1)
! 99: add,l t5,t4,t4 ; t4 += lo32(t1)
! 100: ldd -128(%r30),lo ; lo = low 64 bit of product
! 101: add cylimb,t4,t4
! 102: ldd -120(%r30),m0 ; m0 = mid0 64 bit of product
! 103: add,dc t2,hi,cylimb
! 104: ldd -112(%r30),m1 ; m1 = mid1 64 bit of product
! 105: sub rlimb,t4,t3
! 106: add t4,t3,%r0
! 107: ldd -104(%r30),hi ; hi = high 64 bit of product
! 108: add,dc %r0,cylimb,cylimb
! 109: fldd 0(sptr),%fr4
! 110: ldo 8(sptr),sptr
! 111: std t3,0(rptr)
! 112: addib,<> -1,%r24,L$loop
! 113: ldo 8(rptr),rptr
! 114: L$end2
! 115: xmpyu %fr5R,%fr4R,%fr6
! 116: fstd %fr6,-128(%r30)
! 117: xmpyu %fr5R,%fr4L,%fr7
! 118: fstd %fr7,-120(%r30)
! 119: xmpyu %fr5L,%fr4R,%fr8
! 120: fstd %fr8,-112(%r30)
! 121: xmpyu %fr5L,%fr4L,%fr9
! 122: fstd %fr9,-104(%r30)
! 123: ldd 0(rptr),rlimb
! 124: extrd,u lo,31,32,t1 ; t1 = hi32(lo)
! 125: extrd,u lo,63,32,t4 ; t4 = lo32(lo)
! 126: add,l m0,t1,t1 ; t1 += m0
! 127: add,l,*nuv m1,t1,t1 ; t1 += m0
! 128: add,l %r5,hi,hi ; propagate carry
! 129: extrd,u t1,31,32,t2 ; t2 = hi32(t1)
! 130: depd,z t1,31,32,t5 ; t5 = lo32(t1)
! 131: add,l t5,t4,t4 ; t4 += lo32(t1)
! 132: ldd -128(%r30),lo ; lo = low 64 bit of product
! 133: add cylimb,t4,t4
! 134: ldd -120(%r30),m0 ; m0 = mid0 64 bit of product
! 135: add,dc t2,hi,cylimb
! 136: ldd -112(%r30),m1 ; m1 = mid1 64 bit of product
! 137: sub rlimb,t4,t3
! 138: add t4,t3,%r0
! 139: ldd -104(%r30),hi ; hi = high 64 bit of product
! 140: add,dc %r0,cylimb,cylimb
! 141: std t3,0(rptr)
! 142: ldo 8(rptr),rptr
! 143: L$end1
! 144: ldd 0(rptr),rlimb
! 145: extrd,u lo,31,32,t1 ; t1 = hi32(lo)
! 146: extrd,u lo,63,32,t4 ; t4 = lo32(lo)
! 147: add,l m0,t1,t1 ; t1 += m0
! 148: add,l,*nuv m1,t1,t1 ; t1 += m0
! 149: add,l %r5,hi,hi ; propagate carry
! 150: extrd,u t1,31,32,t2 ; t2 = hi32(t1)
! 151: depd,z t1,31,32,t5 ; t5 = lo32(t1)
! 152: add,l t5,t4,t4 ; t4 += lo32(t1)
! 153: add cylimb,t4,t4
! 154: add,dc t2,hi,cylimb
! 155: sub rlimb,t4,t3
! 156: add t4,t3,%r0
! 157: add,dc %r0,cylimb,cylimb
! 158: std t3,0(rptr)
! 159: ldo 8(rptr),rptr
! 160:
! 161: ldd -96(%r30),%r3
! 162: ldd -88(%r30),%r4
! 163: ldd -80(%r30),%r5
! 164: ldd -72(%r30),%r6
! 165:
! 166: extrd,u cylimb,31,32,%r28
! 167: bve (%r2)
! 168: .exit
! 169: ldo -128(%r30),%r30
! 170: .procend