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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [config/] [sparc/] [lb1spl.asm] - Blame information for rev 282

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1 282 jeremybenn 
/* This is an assembly language implementation of mulsi3, divsi3, and modsi3
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   for the sparclite processor.
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   These routines are all from the SPARClite User's Guide, slightly edited
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   to match the desired calling convention, and also to optimize them.  */
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#ifdef L_udivsi3
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.text
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        .align 4
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        .global .udiv
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        .proc   04
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.udiv:
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        wr      %g0,%g0,%y      ! Not a delayed write for sparclite
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        tst     %g0
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        divscc  %o0,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        retl
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        divscc  %g1,%o1,%o0
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#endif
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#ifdef L_umodsi3
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.text
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        .align 4
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        .global .urem
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        .proc   04
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.urem:
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        wr      %g0,%g0,%y      ! Not a delayed write for sparclite
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        tst     %g0
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        divscc  %o0,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        divscc  %g1,%o1,%g1
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        bl 1f
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        rd      %y,%o0
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        retl
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        nop
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1:      retl
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        add     %o0,%o1,%o0
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#endif
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#ifdef L_divsi3
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.text
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        .align 4
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        .global .div
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        .proc   04
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! ??? This routine could be made faster if was optimized, and if it was
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! rewritten to only calculate the quotient.
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.div:
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        wr      %g0,%g0,%y      ! Not a delayed write for sparclite
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        mov     %o1,%o4
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        tst     %o1
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        bl,a    1f
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        sub     %g0,%o4,%o4
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1:      tst     %o0
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        bl,a    2f
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        mov     -1,%y
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2:      divscc  %o0,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        be      6f
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        mov     %y,%o3
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        bg      4f
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        addcc   %o3,%o4,%g0
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        be,a    6f
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        mov     %g0,%o3
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        tst     %o0
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        bl      5f
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        tst     %g1
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        ba      5f
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        add     %o3,%o4,%o3
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4:      subcc   %o3,%o4,%g0
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        be,a    6f
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        mov     %g0,%o3
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        tst     %o0
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        bge     5f
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        tst     %g1
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        sub     %o3,%o4,%o3
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5:      bl,a    6f
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        add     %g1,1,%g1
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6:      tst     %o1
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        bl,a    7f
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        sub     %g0,%g1,%g1
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7:      retl
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        mov     %g1,%o0         ! Quotient is in %g1.
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#endif
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#ifdef L_modsi3
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.text
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        .align 4
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        .global .rem
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        .proc   04
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! ??? This routine could be made faster if was optimized, and if it was
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! rewritten to only calculate the remainder.
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.rem:
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        wr      %g0,%g0,%y      ! Not a delayed write for sparclite
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        mov     %o1,%o4
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        tst     %o1
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        bl,a    1f
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        sub     %g0,%o4,%o4
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1:      tst     %o0
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        bl,a    2f
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        mov     -1,%y
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2:      divscc  %o0,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        divscc  %g1,%o4,%g1
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        be      6f
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        mov     %y,%o3
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        bg      4f
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        addcc   %o3,%o4,%g0
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        be,a    6f
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        mov     %g0,%o3
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        tst     %o0
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        bl      5f
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        tst     %g1
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        ba      5f
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        add     %o3,%o4,%o3
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4:      subcc   %o3,%o4,%g0
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        be,a    6f
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        mov     %g0,%o3
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        tst     %o0
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        bge     5f
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        tst     %g1
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        sub     %o3,%o4,%o3
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5:      bl,a    6f
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        add     %g1,1,%g1
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6:      tst     %o1
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        bl,a    7f
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        sub     %g0,%g1,%g1
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7:      retl
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        mov     %o3,%o0         ! Remainder is in %o3.
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#endif

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