1dnl PPC32 mpn_bdiv_dbm1c. 2 3dnl Copyright 2008 Free Software Foundation, Inc. 4 5dnl This file is part of the GNU MP Library. 6dnl 7dnl The GNU MP Library is free software; you can redistribute it and/or modify 8dnl it under the terms of either: 9dnl 10dnl * the GNU Lesser General Public License as published by the Free 11dnl Software Foundation; either version 3 of the License, or (at your 12dnl option) any later version. 13dnl 14dnl or 15dnl 16dnl * the GNU General Public License as published by the Free Software 17dnl Foundation; either version 2 of the License, or (at your option) any 18dnl later version. 19dnl 20dnl or both in parallel, as here. 21dnl 22dnl The GNU MP Library is distributed in the hope that it will be useful, but 23dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 24dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 25dnl for more details. 26dnl 27dnl You should have received copies of the GNU General Public License and the 28dnl GNU Lesser General Public License along with the GNU MP Library. If not, 29dnl see https://www.gnu.org/licenses/. 30 31include(`../config.m4') 32 33C cycles/limb 34C 603e: ? 35C 604e: ? 36C 75x (G3): ? 37C 7400,7410 (G4): 9.43 38C 744x,745x (G4+): 6.28 39C power4/ppc970: ? 40C power5: ? 41 42C TODO 43C * Nothing to do... 44 45C INPUT PARAMETERS 46define(`rp', `r3') 47define(`up', `r4') 48define(`n', `r5') 49define(`bd', `r6') 50define(`cy', `r7') 51 52ASM_START() 53PROLOGUE(mpn_bdiv_dbm1c) 54 lwz r0, 0(r4) 55 56 rlwinm. r12, r5, 0,30,31 57 cmplwi cr6, r12, 2 58 cmplwi cr7, r5, 4 59 addi r5, r5, 1 60 srwi r5, r5, 2 61 mtctr r5 62 beq cr0, L(b00) 63 blt cr6, L(b01) 64 beq cr6, L(b10) 65 66L(b11): mullw r5, r0, r6 67 mulhwu r12, r0, r6 68 lwz r0, 4(r4) 69 addi r4, r4, -12 70 addi r3, r3, -12 71 b L(3) 72 73L(b00): mullw r9, r0, r6 74 mulhwu r8, r0, r6 75 lwz r0, 4(r4) 76 addi r4, r4, -8 77 addi r3, r3, -8 78 b L(0) 79 80L(b01): mullw r5, r0, r6 81 mulhwu r12, r0, r6 82 addi r3, r3, -4 83 ble cr7, L(e1) 84 lwz r0, 4(r4) 85 addi r4, r4, -4 86 b L(1) 87 88L(b10): mullw r9, r0, r6 89 mulhwu r8, r0, r6 90 lwz r0, 4(r4) 91 ble cr7, L(e2) 92 93 ALIGN(16) 94L(top): mullw r5, r0, r6 95 mulhwu r12, r0, r6 96 subfc r11, r9, r7 97 lwz r0, 8(r4) 98 subfe r7, r8, r11 99 stw r11, 0(r3) 100L(1): mullw r9, r0, r6 101 mulhwu r8, r0, r6 102 subfc r11, r5, r7 103 lwz r0, 12(r4) 104 subfe r7, r12, r11 105 stw r11, 4(r3) 106L(0): mullw r5, r0, r6 107 mulhwu r12, r0, r6 108 subfc r11, r9, r7 109 lwz r0, 16(r4) 110 subfe r7, r8, r11 111 stw r11, 8(r3) 112L(3): mullw r9, r0, r6 113 mulhwu r8, r0, r6 114 subfc r11, r5, r7 115 lwz r0, 20(r4) 116 subfe r7, r12, r11 117 stw r11, 12(r3) 118 addi r4, r4, 16 119 addi r3, r3, 16 120 bdnz L(top) 121 122L(e2): mullw r5, r0, r6 123 mulhwu r12, r0, r6 124 subfc r11, r9, r7 125 subfe r7, r8, r11 126 stw r11, 0(r3) 127L(e1): subfc r11, r5, r7 128 stw r11, 4(r3) 129 subfe r3, r12, r11 130 blr 131EPILOGUE() 132