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1 | ! SPARC v8 __mpn_submul_1 -- Multiply a limb vector with a limb and |
2 | ! subtract the result from a second limb vector. | |
3 | ||
04277e02 | 4 | ! Copyright (C) 1992-2019 Free Software Foundation, Inc. |
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5 | |
6 | ! This file is part of the GNU MP Library. | |
7 | ||
8 | ! The GNU MP Library is free software; you can redistribute it and/or modify | |
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9 | ! it under the terms of the GNU Lesser General Public License as published by |
10 | ! the Free Software Foundation; either version 2.1 of the License, or (at your | |
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11 | ! option) any later version. |
12 | ||
13 | ! The GNU MP Library is distributed in the hope that it will be useful, but | |
14 | ! WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
6d84f89a | 15 | ! or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public |
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16 | ! License for more details. |
17 | ||
6d84f89a | 18 | ! You should have received a copy of the GNU Lesser General Public License |
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19 | ! along with the GNU MP Library; see the file COPYING.LIB. If not, |
20 | ! see <http://www.gnu.org/licenses/>. | |
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21 | |
22 | ||
23 | ! INPUT PARAMETERS | |
24 | ! res_ptr o0 | |
25 | ! s1_ptr o1 | |
26 | ! size o2 | |
27 | ! s2_limb o3 | |
28 | ||
f41c8091 | 29 | #include <sysdep.h> |
28f540f4 | 30 | |
f41c8091 | 31 | ENTRY(__mpn_submul_1) |
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32 | sub %g0,%o2,%o2 ! negate ... |
33 | sll %o2,2,%o2 ! ... and scale size | |
34 | sub %o1,%o2,%o1 ! o1 is offset s1_ptr | |
35 | sub %o0,%o2,%g1 ! g1 is offset res_ptr | |
36 | ||
37 | mov 0,%o0 ! clear cy_limb | |
38 | ||
f41c8091 UD |
39 | LOC(loop): |
40 | ld [%o1+%o2],%o4 | |
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41 | ld [%g1+%o2],%g2 |
42 | umul %o4,%o3,%o5 | |
43 | rd %y,%g3 | |
44 | addcc %o5,%o0,%o5 | |
45 | addx %g3,0,%o0 | |
46 | subcc %g2,%o5,%g2 | |
47 | addx %o0,0,%o0 | |
48 | st %g2,[%g1+%o2] | |
49 | ||
50 | addcc %o2,4,%o2 | |
f41c8091 | 51 | bne LOC(loop) |
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52 | nop |
53 | ||
54 | retl | |
55 | nop | |
f41c8091 UD |
56 | |
57 | END(__mpn_submul_1) |