projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 9a0a462c | 1 | /* Multiply a limb vector by a single limb, for PowerPC. |
| 581c785b | 2 | Copyright (C) 1993-2022 Free Software Foundation, Inc. |
| 4cca6b86 UD |
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 | |
| 41bdb6e2 AJ |
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. | |
| 4cca6b86 UD |
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 | |
| 41bdb6e2 | 13 | Lesser General Public License for more details. |
| 4cca6b86 | 14 | |
| 41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
| 59ba27a6 | 16 | License along with the GNU C Library; if not, see |
| 5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
| 4cca6b86 UD |
18 | |
| 19 | #include <sysdep.h> | |
| 9a0a462c UD |
20 | |
| 21 | /* mp_limb_t mpn_addmul_1 (mp_ptr res_ptr, mp_srcptr s1_ptr, | |
| 22 | mp_size_t s1_size, mp_limb_t s2_limb) | |
| 23 | Calculate res+s1*s2 and put result back in res; return carry. */ | |
| b5510883 | 24 | ENTRY (__mpn_addmul_1) |
| 217eb19b UD |
25 | mtctr r5 |
| 26 | ||
| 27 | lwz r0,0(r4) | |
| 28 | mullw r7,r0,r6 | |
| 29 | mulhwu r10,r0,r6 | |
| 30 | lwz r9,0(r3) | |
| 31 | addc r8,r7,r9 | |
| 32 | addi r3,r3,-4 /* adjust res_ptr */ | |
| 4e141d64 | 33 | bdz L(1) |
| 9a0a462c | 34 | |
| 4e141d64 | 35 | L(0): lwzu r0,4(r4) |
| 217eb19b UD |
36 | stwu r8,4(r3) |
| 37 | mullw r8,r0,r6 | |
| 38 | adde r7,r8,r10 | |
| 39 | mulhwu r10,r0,r6 | |
| 40 | lwz r9,4(r3) | |
| 41 | addze r10,r10 | |
| 42 | addc r8,r7,r9 | |
| 4e141d64 | 43 | bdnz L(0) |
| 9a0a462c | 44 | |
| 4e141d64 | 45 | L(1): stw r8,4(r3) |
| 217eb19b | 46 | addze r3,r10 |
| 9a0a462c | 47 | blr |
| b5510883 | 48 | END (__mpn_addmul_1) |