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@ ARM mpn_addmul_1 -- Multiply a limb vector with a limb and store the result
@ in 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 sl r10
#define fp r11
#define ip r12
#define sp r13
#define lr r14
#define pc r15
.text
.align 0
.global __gmpn_mul_1
.type __gmpn_mul_1,%function
__gmpn_mul_1:
stmfd sp!, { r8, r9, lr }
ands ip, n, #1
beq skip1
ldr lr, [a], #4
umull r9, ip, w, lr
str r9, [p], #4
skip1:
tst n, #2
beq skip2
mov r8, ip
ldmia a!, { ip, lr }
mov r9, #0
umlal r8, r9, w, ip
mov ip, #0
umlal r9, ip, w, lr
stmia p!, { r8, r9 }
skip2:
bics n, n, #3
beq return
stmfd sp!, { r6, r7 }
mul_1_loop:
mov r6, ip
ldmia a!, { r8, r9, ip, lr }
ldr r7, [p] /* Bring stuff into cache. */
mov r7, #0
umlal r6, r7, w, r8
mov r8, #0
umlal r7, r8, w, r9
mov r9, #0
umlal r8, r9, w, ip
mov ip, #0
umlal r9, ip, w, lr
subs n, n, #4
stmia p!, { r6, r7, r8, r9 }
bne mul_1_loop
ldmfd sp!, { r6, r7 }
return:
mov r0, ip
ldmfd sp!, { r8, r9, pc }
end:
.size __gmpn_mul_1, end - __gmpn_mul_1
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