54 lines
1.4 KiB
ArmAsm
54 lines
1.4 KiB
ArmAsm
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! SH2 __gmpn_addmul_1 -- Multiply a limb vector with a limb and add
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! the result to a second limb vector.
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! Copyright 1995, 2000 Free Software Foundation, Inc.
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! This file is part of the GNU MP Library.
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! The GNU MP Library is free software; you can redistribute it and/or modify
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! it under the terms of the GNU Lesser General Public License as published by
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! the Free Software Foundation; either version 2.1 of the License, or (at your
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! option) any later version.
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! The GNU MP Library is distributed in the hope that it will be useful, but
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! WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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! or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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! License for more details.
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! You should have received a copy of the GNU Lesser General Public License
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! along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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! the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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! MA 02110-1301, USA.
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! INPUT PARAMETERS
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! res_ptr r4
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! s1_ptr r5
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! size r6
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! s2_limb r7
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.text
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.align 1
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.global ___gmpn_addmul_1
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___gmpn_addmul_1:
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mov #0,r2 ! cy_limb = 0
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mov #0,r0 ! Keep r0 = 0 for entire loop
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clrt
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Loop: mov.l @r5+,r3
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dmulu.l r3,r7
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sts macl,r1
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addc r2,r1 ! lo_prod += old cy_limb
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sts mach,r2 ! new cy_limb = hi_prod
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mov.l @r4,r3
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addc r0,r2 ! cy_limb += T, T = 0
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addc r3,r1
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addc r0,r2 ! cy_limb += T, T = 0
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dt r6
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mov.l r1,@r4
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bf.s Loop
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add #4,r4
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rts
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mov r2,r0
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