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###################################-*-asm*-

#

#  Copyright 2009, 2010, 2011 Free Software Foundation, Inc.

#

#  Contributed by Michael Eager .

#

#  This file is free software; you can redistribute it and/or modify it

#  under the terms of the GNU General Public License as published by the

#  Free Software Foundation; either version 3, or (at your option) any

#  later version.

#

#  GCC 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 General Public

#  License for more details.

#

#  Under Section 7 of GPL version 3, you are granted additional

#  permissions described in the GCC Runtime Library Exception, version

#  3.1, as published by the Free Software Foundation.

#

#  You should have received a copy of the GNU General Public License and

#  a copy of the GCC Runtime Library Exception along with this program;

#  see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see

#  .

#

#  mulsi3.S

#

#  Multiply operation for 32 bit integers.

#       Input : Operand1 in Reg r5

#               Operand2 in Reg r6

#       Output: Result [op1 * op2] in Reg r3

#

#######################################

        .globl  __mulsi3

        .ent    __mulsi3

        .type   __mulsi3,@function

__mulsi3:

        .frame  r1,0,r15

        add     r3,r0,r0

        BEQI    r5,$L_Result_Is_Zero      # Multiply by Zero

        BEQI    r6,$L_Result_Is_Zero      # Multiply by Zero

        BGEId   r5,$L_R5_Pos

        XOR     r4,r5,r6                  # Get the sign of the result

        RSUBI   r5,r5,0                   # Make r5 positive

$L_R5_Pos:

        BGEI    r6,$L_R6_Pos

        RSUBI   r6,r6,0                   # Make r6 positive

$L_R6_Pos:

        bri     $L1

$L2:

        add     r5,r5,r5

$L1:

        srl     r6,r6

        addc    r7,r0,r0

        beqi    r7,$L2

        bneid   r6,$L2

        add     r3,r3,r5

        blti    r4,$L_NegateResult

        rtsd    r15,8

        nop

$L_NegateResult:

        rtsd    r15,8

        rsub    r3,r3,r0

$L_Result_Is_Zero:

        rtsd    r15,8

        addi    r3,r0,0

        .end __mulsi3

        .size   __mulsi3, . - __mulsi3