1 ###################################-*-asm*-
3 # Copyright (C) 2009-2015 Free Software Foundation, Inc.
5 # Contributed by Michael Eager <eager@eagercon.com>.
7 # This file is free software; you can redistribute it and/or modify it
8 # under the terms of the GNU General Public License as published by the
9 # Free Software Foundation; either version 3, or (at your option) any
12 # GCC is distributed in the hope that it will be useful, but WITHOUT
13 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 # or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
15 # License for more details.
17 # Under Section 7 of GPL version 3, you are granted additional
18 # permissions described in the GCC Runtime Library Exception, version
19 # 3.1, as published by the Free Software Foundation.
21 # You should have received a copy of the GNU General Public License and
22 # a copy of the GCC Runtime Library Exception along with this program;
23 # see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
24 # <http://www.gnu.org/licenses/>.
28 # Multiply operation for 32 bit integers.
29 # Input : Operand1 in Reg r5
31 # Output: Result [op1 * op2] in Reg r3
33 #######################################
37 .type __mulsi3,@function
41 BEQI r5,$L_Result_Is_Zero # Multiply by Zero
42 BEQI r6,$L_Result_Is_Zero # Multiply by Zero
44 XOR r4,r5,r6 # Get the sign of the result
45 RSUBI r5,r5,0 # Make r5 positive
48 RSUBI r6,r6,0 # Make r6 positive
59 blti r4,$L_NegateResult
69 .size __mulsi3, . - __mulsi3