1/* Multiply a limb vector by a limb, for PowerPC. 2 Copyright (C) 1993-2021 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 The GNU C Library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, see 17 <https://www.gnu.org/licenses/>. */ 18 19#include <sysdep.h> 20 21/* mp_limb_t mpn_mul_1 (mp_ptr res_ptr, mp_srcptr s1_ptr, 22 mp_size_t s1_size, mp_limb_t s2_limb) 23 Calculate s1*s2 and put result in res_ptr; return carry. */ 24 25ENTRY (__mpn_mul_1) 26 mtctr r5 27 28 lwz r0,0(r4) 29 mullw r7,r0,r6 30 mulhwu r10,r0,r6 31 addi r3,r3,-4 # adjust res_ptr 32 addic r5,r5,0 # clear cy with dummy insn 33 bdz L(1) 34 35L(0): lwzu r0,4(r4) 36 stwu r7,4(r3) 37 mullw r8,r0,r6 38 adde r7,r8,r10 39 mulhwu r10,r0,r6 40 bdnz L(0) 41 42L(1): stw r7,4(r3) 43 addze r3,r10 44 blr 45END (__mpn_mul_1) 46