1dnl PowerPC-32 mpn_mul_1 -- Multiply a limb vector with a limb and store the 2dnl result in a second limb vector. 3 4dnl Copyright 1995, 1997, 2000, 2002, 2003, 2005 Free Software Foundation, 5dnl Inc. 6 7dnl This file is part of the GNU MP Library. 8dnl 9dnl The GNU MP Library is free software; you can redistribute it and/or modify 10dnl it under the terms of either: 11dnl 12dnl * the GNU Lesser General Public License as published by the Free 13dnl Software Foundation; either version 3 of the License, or (at your 14dnl option) any later version. 15dnl 16dnl or 17dnl 18dnl * the GNU General Public License as published by the Free Software 19dnl Foundation; either version 2 of the License, or (at your option) any 20dnl later version. 21dnl 22dnl or both in parallel, as here. 23dnl 24dnl The GNU MP Library is distributed in the hope that it will be useful, but 25dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 26dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 27dnl for more details. 28dnl 29dnl You should have received copies of the GNU General Public License and the 30dnl GNU Lesser General Public License along with the GNU MP Library. If not, 31dnl see https://www.gnu.org/licenses/. 32 33include(`../config.m4') 34 35C cycles/limb 36C 603e: ? 37C 604e: 4.0 38C 75x (G3): 4.5-11 39C 7400,7410 (G4): 4.5-11 40C 744x,745x (G4+): 6.0 41C power4/ppc970: 6.0 42C power5: 5.63 43 44C INPUT PARAMETERS 45C rp r3 46C up r4 47C n r5 48C vl r6 49 50ASM_START() 51PROLOGUE(mpn_mul_1) 52 mtctr r5 53 addi r3,r3,-4 C adjust res_ptr, it's offset before it's used 54 li r12,0 C clear upper product reg 55 addic r0,r0,0 C clear cy 56C Start software pipeline 57 lwz r8,0(r4) 58 bdz L(end3) 59 lwzu r9,4(r4) 60 mullw r11,r8,r6 61 mulhwu r0,r8,r6 62 bdz L(end1) 63C Software pipelined main loop 64L(loop): 65 lwz r8,4(r4) 66 mullw r10,r9,r6 67 adde r5,r11,r12 68 mulhwu r12,r9,r6 69 stw r5,4(r3) 70 bdz L(end2) 71 lwzu r9,8(r4) 72 mullw r11,r8,r6 73 adde r7,r10,r0 74 mulhwu r0,r8,r6 75 stwu r7,8(r3) 76 bdnz L(loop) 77C Finish software pipeline 78L(end1): 79 mullw r10,r9,r6 80 adde r5,r11,r12 81 mulhwu r12,r9,r6 82 stw r5,4(r3) 83 adde r7,r10,r0 84 stwu r7,8(r3) 85 addze r3,r12 86 blr 87L(end2): 88 mullw r11,r8,r6 89 adde r7,r10,r0 90 mulhwu r0,r8,r6 91 stwu r7,8(r3) 92 adde r5,r11,r12 93 stw r5,4(r3) 94 addze r3,r0 95 blr 96L(end3): 97 mullw r11,r8,r6 98 stw r11,4(r3) 99 mulhwu r3,r8,r6 100 blr 101EPILOGUE(mpn_mul_1) 102