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/* libgcc functions for Blackfin.

   Copyright (C) 2005, 2009 Free Software Foundation, Inc.

   Contributed by Analog Devices.

This file is part of GCC.

GCC 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

.  */

#ifdef L_divsi3

.text

.align 2

.global ___divsi3;

.type ___divsi3, STT_FUNC;

___divsi3:

        [--SP]= RETS;

        [--SP] = R7;

        R2 = -R0;

        CC = R0 < 0;

        IF CC R0 = R2;

        R7 = CC;

        R2 = -R1;

        CC = R1 < 0;

        IF CC R1 = R2;

        R2 = CC;

        R7 = R7 ^ R2;

        CALL ___udivsi3;

        CC = R7;

        R1 = -R0;

        IF CC R0 = R1;

        R7 = [SP++];

        RETS = [SP++];

        RTS;

#endif

#ifdef L_modsi3

.align 2

.global ___modsi3;

.type ___modsi3, STT_FUNC;

___modsi3:

        [--SP] = RETS;

        [--SP] = R0;

        [--SP] = R1;

        CALL ___divsi3;

        R2 = [SP++];

        R1 = [SP++];

        R2 *= R0;

        R0 = R1 - R2;

        RETS = [SP++];

        RTS;

#endif

#ifdef L_udivsi3

.align 2

.global ___udivsi3;

.type ___udivsi3, STT_FUNC;

___udivsi3:

        P0 = 32;

        LSETUP (0f, 1f) LC0 = P0;

        /* upper half of dividend */

        R3 = 0;

0:

        /* The first time round in the loop we shift in garbage, but since we

           perform 33 shifts, it doesn't matter.  */

        R0 = ROT R0 BY 1;

        R3 = ROT R3 BY 1;

        R2 = R3 - R1;

        CC = R3 < R1 (IU);

1:

        /* Last instruction of the loop.  */

        IF ! CC R3 = R2;

        /* Shift in the last bit.  */

        R0 = ROT R0 BY 1;

        /* R0 is the result, R3 contains the remainder.  */

        R0 = ~ R0;

        RTS;

#endif

#ifdef L_umodsi3

.align 2

.global ___umodsi3;

.type ___umodsi3, STT_FUNC;

___umodsi3:

        [--SP] = RETS;

        CALL ___udivsi3;

        R0 = R3;

        RETS = [SP++];

        RTS;

#endif

#ifdef L_umulsi3_highpart

.align 2

.global ___umulsi3_highpart;

.type ___umulsi3_highpart, STT_FUNC;

___umulsi3_highpart:

        A1 = R1.L * R0.L (FU);

        A1 = A1 >> 16;

        A0 = R1.H * R0.H, A1 += R1.L * R0.H (FU);

        A1 += R0.L * R1.H (FU);

        A1 = A1 >> 16;

        A0 += A1;

        R0 = A0 (FU);

        RTS;

#endif

#ifdef L_smulsi3_highpart

.align 2

.global ___smulsi3_highpart;

.type ___smulsi3_highpart, STT_FUNC;

___smulsi3_highpart:

        A1 = R1.L * R0.L (FU);

        A1 = A1 >> 16;

        A0 = R0.H * R1.H, A1 += R0.H * R1.L (IS,M);

        A1 += R1.H * R0.L (IS,M);

        A1 = A1 >>> 16;

        R0 = (A0 += A1);

        RTS;

#endif