| 1 | ! SPARC v9 32-bit __mpn_addmul_1 -- Multiply a limb vector with a limb |
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| 2 | ! and add the result to a second limb vector. |
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| 3 | ! |
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| 4 | ! Copyright (C) 2013-2024 Free Software Foundation, Inc. |
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| 5 | ! This file is part of the GNU C Library. |
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| 6 | ! |
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| 7 | ! The GNU C Library is free software; you can redistribute it and/or |
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| 8 | ! modify it under the terms of the GNU Lesser General Public |
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| 9 | ! License as published by the Free Software Foundation; either |
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| 10 | ! version 2.1 of the License, or (at your option) any later version. |
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| 11 | ! |
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| 12 | ! The GNU C Library is distributed in the hope that it will be useful, |
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| 13 | ! but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | ! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 15 | ! Lesser General Public License for more details. |
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| 16 | ! |
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| 17 | ! You should have received a copy of the GNU Lesser General Public |
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| 18 | ! License along with the GNU C Library; if not, see |
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| 19 | ! <https://www.gnu.org/licenses/>. |
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| 20 | |
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| 21 | #include <sysdep.h> |
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| 22 | |
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| 23 | #define res_ptr %i0 |
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| 24 | #define s1_ptr %i1 |
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| 25 | #define sz_arg %i2 |
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| 26 | #define s2l_arg %i3 |
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| 27 | #define sz %o4 |
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| 28 | #define carry %o5 |
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| 29 | #define s2_limb %g1 |
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| 30 | #define tmp1 %l0 |
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| 31 | #define tmp2 %l1 |
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| 32 | #define tmp3 %l2 |
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| 33 | #define tmp4 %l3 |
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| 34 | #define tmp64_1 %g3 |
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| 35 | #define tmp64_2 %o3 |
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| 36 | |
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| 37 | ENTRY(__mpn_addmul_1) |
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| 38 | save %sp, -96, %sp |
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| 39 | srl sz_arg, 0, sz |
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| 40 | srl s2l_arg, 0, s2_limb |
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| 41 | subcc sz, 1, sz |
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| 42 | be,pn %icc, .Lfinal_limb |
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| 43 | clr carry |
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| 44 | |
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| 45 | .Lloop: |
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| 46 | lduw [s1_ptr + 0x00], tmp1 |
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| 47 | lduw [res_ptr + 0x00], tmp3 |
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| 48 | lduw [s1_ptr + 0x04], tmp2 |
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| 49 | lduw [res_ptr + 0x04], tmp4 |
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| 50 | mulx tmp1, s2_limb, tmp64_1 |
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| 51 | add s1_ptr, 8, s1_ptr |
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| 52 | mulx tmp2, s2_limb, tmp64_2 |
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| 53 | sub sz, 2, sz |
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| 54 | add res_ptr, 8, res_ptr |
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| 55 | add tmp3, tmp64_1, tmp64_1 |
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| 56 | add carry, tmp64_1, tmp64_1 |
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| 57 | stw tmp64_1, [res_ptr - 0x08] |
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| 58 | srlx tmp64_1, 32, carry |
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| 59 | add tmp4, tmp64_2, tmp64_2 |
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| 60 | add carry, tmp64_2, tmp64_2 |
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| 61 | stw tmp64_2, [res_ptr - 0x04] |
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| 62 | brgz sz, .Lloop |
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| 63 | srlx tmp64_2, 32, carry |
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| 64 | |
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| 65 | brlz,pt sz, .Lfinish |
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| 66 | nop |
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| 67 | |
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| 68 | .Lfinal_limb: |
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| 69 | lduw [s1_ptr + 0x00], tmp1 |
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| 70 | lduw [res_ptr + 0x00], tmp3 |
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| 71 | mulx tmp1, s2_limb, tmp64_1 |
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| 72 | add tmp3, tmp64_1, tmp64_1 |
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| 73 | add carry, tmp64_1, tmp64_1 |
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| 74 | stw tmp64_1, [res_ptr + 0x00] |
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| 75 | srlx tmp64_1, 32, carry |
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| 76 | |
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| 77 | .Lfinish: |
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| 78 | jmpl %i7 + 0x8, %g0 |
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| 79 | restore carry, 0, %o0 |
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| 80 | END(__mpn_addmul_1) |
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| 81 | |
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