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@ ARM mpn_mul_1 -- Multiply a limb vector with a limb and add the result to a
@ second limb vector.
@ Contributed by Robert Harley.
@ Copyright (C) 1998, 2000 Free Software Foundation, Inc.
@ This file is part of the GNU MP Library.
@ The GNU MP Library is free software; you can redistribute it and/or modify
@ it under the terms of the GNU Library General Public License as published by
@ the Free Software Foundation; either version 2 of the License, or (at your
@ option) any later version.
@ The GNU MP Library is distributed in the hope that it will be useful, but
@ WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
@ or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
@ License for more details.
@ You should have received a copy of the GNU Library General Public License
@ along with the GNU MP Library; see the file COPYING.LIB. If not, write to
@ the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
@ MA 02111-1307, USA.
#define p r0
#define a r1
#define n r2
#define w r3
#define z r11
#define ip r12
#define sp r13
#define lr r14
#define pc r15
.text
.align 0
.global __gmpn_addmul_1
.type __gmpn_addmul_1,%function
__gmpn_addmul_1:
stmfd sp!, { r8-r11, lr }
mov z, #0
mov ip, #0
movs n, n, lsr #1
bcc skip1
ldr lr, [a], #4
ldr r9, [p]
umlal r9, ip, w, lr
str r9, [p], #4
skip1:
movs n, n, lsr #1
bcc skip2
ldmia p, { r9, r10 }
adds r8, ip, r9
adc r9, z, #0
ldmia a!, { ip, lr }
umlal r8, r9, w, ip
adds r9, r9, r10
adc ip, z, #0
umlal r9, ip, w, lr
stmia p!, { r8, r9 }
skip2:
teq n, #0
beq return
stmfd sp!, { r4-r7 }
addmul_loop:
ldmia p, { r5, r6, r7, r8 }
adds r4, ip, r5
adc r5, z, #0
ldmia a!, { r9, r10, ip, lr }
umlal r4, r5, w, r9
adds r5, r5, r6
adc r6, z, #0
umlal r5, r6, w, r10
adds r6, r6, r7
adc r7, z, #0
umlal r6, r7, w, ip
adds r7, r7, r8
adc ip, z, #0
umlal r7, ip, w, lr
subs n, n, #1
stmia p!, { r4, r5, r6, r7 }
bne addmul_loop
ldmfd sp!, { r4-r7 }
return:
mov r0, ip
ldmfd sp!, { r8-r11, pc }
end:
.size __gmpn_addmul_1, end - __gmpn_addmul_1
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