| dnl PowerPC-64 mpn_addmul_1 -- Multiply a limb vector with a limb and add |
| dnl the result to a second limb vector. |
| |
| dnl Copyright 1999, 2000, 2001, 2003, 2005 Free Software Foundation, Inc. |
| |
| dnl This file is part of the GNU MP Library. |
| |
| dnl The GNU MP Library is free software; you can redistribute it and/or modify |
| dnl it under the terms of the GNU Lesser General Public License as published |
| dnl by the Free Software Foundation; either version 3 of the License, or (at |
| dnl your option) any later version. |
| |
| dnl The GNU MP Library is distributed in the hope that it will be useful, but |
| dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public |
| dnl License for more details. |
| |
| dnl You should have received a copy of the GNU Lesser General Public License |
| dnl along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. |
| |
| include(`../config.m4') |
| |
| C cycles/limb |
| C POWER3/PPC630: ? |
| C POWER4/PPC970: 12.5 |
| |
| C INPUT PARAMETERS |
| C rp r3 |
| C up r4 |
| C n r5 |
| C v r6,r7 or r7,r8 |
| |
| ASM_START() |
| PROLOGUE(mpn_addmul_1) |
| |
| ifdef(`BROKEN_LONGLONG_PARAM', |
| ` rldimi r8, r7, 32,0 C assemble vlimb from separate 32-bit arguments |
| mr r6, r8 |
| ',` |
| rldimi r7, r6, 32,0 C assemble vlimb from separate 32-bit arguments |
| mr r6, r7 |
| ') |
| li r7, 0 C cy_limb = 0 |
| mtctr r5 |
| addic r0, r0, 0 |
| addi r3, r3, -8 |
| addi r4, r4, -8 |
| |
| L(oop): ldu r0, 8(r4) |
| mulld r9, r0, r6 |
| adde r12, r9, r7 C add old high limb and new low limb |
| srdi r5, r9, 32 |
| srdi r11, r7, 32 |
| adde r5, r5, r11 C add high limb parts, set cy |
| mulhdu r7, r0, r6 |
| addze r7, r7 |
| ld r10, 8(r3) |
| addc r9, r12, r10 |
| srdi r5, r12, 32 |
| srdi r11, r10, 32 |
| adde r5, r5, r11 C add high limb parts, set cy |
| stdu r9, 8(r3) |
| bdnz L(oop) |
| |
| addze r4, r7 |
| srdi r3, r4, 32 |
| blr |
| EPILOGUE() |
