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/*

 * Copyright (C) 1999           Keith Adams 

 *                              Oregon Graduate Institute

 */

#include 

/*

 * 64-bit math routines that gcc needs but doesn't have.

 */

/*

 * 64-bit addition.

 *

 * registers:

 * g0 = low word of arg 1, g1 = hi word of arg 1

 * g2 = low word of arg 2, g3 = hi word of arg 2

 * it wants result in g0-g1

 */

#define AC_OVERFLOW_BIT 8

        .globl  SYMBOL_NAME(__adddi3)

SYMBOL_NAME_LABEL(__adddi3)

        cmpo    1, 0

        addc    g0, g2, g0

        addc    g1, g3, g1

        ret

/*

 * 64-bit subtraction: a-b = c

 *

 * registers in:

 * g0-g1 = a; g2-g3 = b

 * registers out:

 * g0-g1 = c

 */

        .globl  SYMBOL_NAME(__subdi3)

SYMBOL_NAME_LABEL(__subdi3)

        cmpo    1, 0

        subc    g2, g0, g0

        subc    g3, g1, g1

        ret