1991-02-01 15:09:58 +00:00
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.define .adf4, .adf8, .sbf4, .sbf8, .mlf4, .mlf8, .dvf4, .dvf8
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.define .ngf4, .ngf8, .fif4, .fif8, .fef4, .fef8
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.define .cif4, .cif8, .cuf4, .cuf8, .cfi, .cfu, .cff4, .cff8
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.define .cmf4, .cmf8
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.sect .text
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.sect .rom
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.sect .data
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.sect .bss
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1994-06-24 14:02:31 +00:00
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! $Id$
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1991-02-01 15:09:58 +00:00
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! Implement interface to floating point package for M68881
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.sect .text
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.adf4:
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move.l (sp)+,a0
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fmove.s (sp),fp0
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fadd.s 4(sp),fp0
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fmove.s fp0,4(sp)
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jmp (a0)
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.adf8:
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move.l (sp)+,a0
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fmove.d (sp),fp0
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fadd.d 8(sp),fp0
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fmove.d fp0,8(sp)
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jmp (a0)
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.sbf4:
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move.l (sp)+,a0
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fmove.s (sp),fp0
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fmove.s 4(sp),fp1
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fsub fp0,fp1
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fmove.s fp1,4(sp)
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jmp (a0)
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.sbf8:
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move.l (sp)+,a0
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fmove.d (sp),fp0
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fmove.d 8(sp),fp1
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fsub fp0,fp1
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fmove.d fp1,8(sp)
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jmp (a0)
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.mlf4:
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move.l (sp)+,a0
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fmove.s (sp),fp0
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fmul.s 4(sp),fp0
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fmove.s fp0,4(sp)
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jmp (a0)
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.mlf8:
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move.l (sp)+,a0
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fmove.d (sp),fp0
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fmul.d 8(sp),fp0
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fmove.d fp0,8(sp)
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jmp (a0)
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.dvf4:
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move.l (sp)+,a0
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fmove.s (sp),fp0
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fmove.s 4(sp),fp1
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fdiv fp0,fp1
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fmove.s fp1,4(sp)
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jmp (a0)
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.dvf8:
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move.l (sp)+,a0
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fmove.d (sp),fp0
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fmove.d 8(sp),fp1
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fdiv fp0,fp1
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fmove.d fp1,8(sp)
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jmp (a0)
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.ngf4:
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fmove.s 4(sp),fp0
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fneg fp0
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fmove.s fp0,4(sp)
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rts
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.ngf8:
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fmove.d 4(sp),fp0
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fneg fp0
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fmove.d fp0,4(sp)
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rts
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.fif4:
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move.l (sp)+,a0
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move.l (sp),a1
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fmove.s 4(sp),fp0
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fmove.s 8(sp),fp1
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fmul fp0,fp1
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fintrz fp1,fp0
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fsub fp0,fp1
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fmove.s fp1,4(a1)
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fmove.s fp0,(a1)
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jmp (a0)
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.fif8:
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move.l (sp)+,a0
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move.l (sp),a1
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fmove.d 4(sp),fp0
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fmove.d 12(sp),fp1
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fmul fp0,fp1
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fintrz fp1,fp0
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fsub fp0,fp1
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fmove.d fp1,8(a1)
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fmove.d fp0,(a1)
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jmp (a0)
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.fef4:
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move.l (sp)+,a0
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move.l (sp),a1
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fmove.s 4(sp),fp0
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fgetexp fp0,fp1
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fmove.l fpsr,d0
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and.l #0x2000,d0 ! set if Infinity
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beq 1f
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move.w #129,(a1)
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fmove.s 4(sp),fp0
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fblt 2f
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move.l #0x3f000000,2(a1)
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jmp (a0)
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2:
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move.l #0xbf000000,2(a1)
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jmp (a0)
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1:
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fmove.l fp1,d0
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add.l #1,d0
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fgetman fp0
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fbne 1f
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clr.l d0
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bra 2f
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1:
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fmove.l #2,fp1
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fdiv fp1,fp0
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2:
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fmove.s fp0,2(a1)
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move.w d0,(a1)
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jmp (a0)
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.fef8:
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move.l (sp)+,a0
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move.l (sp),a1
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fmove.d 4(sp),fp0
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fgetexp fp0,fp1
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fmove.l fpsr,d0
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and.l #0x2000,d0 ! set if Infinity
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beq 1f
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move.w #1025,(a1)
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fmove.d 4(sp),fp0
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fblt 2f
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move.l #0x3fe00000,2(a1)
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clr.l 6(a1)
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jmp (a0)
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2:
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move.l #0xbfe00000,2(a1)
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clr.l 6(a1)
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jmp (a0)
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1:
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fmove.l fp1,d0
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add.l #1,d0
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fgetman fp0
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fbne 1f
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clr.l d0
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bra 2f
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1:
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fmove.l #2,fp1
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fdiv fp1,fp0
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2:
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fmove.d fp0,2(a1)
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move.w d0,(a1)
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jmp (a0)
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.cif4:
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move.l (sp)+,a0
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cmp.w #2,(sp)
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bne 1f
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fmove.w 2(sp),fp0
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fmove.s fp0,(sp)
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jmp (a0)
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1:
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fmove.l 2(sp),fp0
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fmove.s fp0,2(sp)
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jmp (a0)
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.cif8:
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move.l (sp)+,a0
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cmp.w #2,(sp)
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bne 1f
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fmove.w 2(sp),fp0
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fmove.d fp0,(sp)
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jmp (a0)
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1:
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fmove.l 2(sp),fp0
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fmove.d fp0,(sp)
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jmp (a0)
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.cuf4:
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move.l (sp)+,a0
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cmp.w #2,(sp)
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bne 2f
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fmove.w 2(sp),fp0
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tst.w 2(sp)
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bge 1f
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fadd.l #65536,fp0
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1:
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fmove.s fp0,(sp)
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jmp (a0)
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2:
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fmove.l 2(sp),fp0
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tst.l 2(sp)
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bge 1f
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fsub.l #-2147483648,fp0
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fsub.l #-2147483648,fp0
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1:
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fmove.s fp0,2(sp)
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jmp (a0)
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.cuf8:
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move.l (sp)+,a0
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move.w (sp),d0
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cmp.w #2,d0
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bne 2f
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fmove.w 2(sp),fp0
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tst.w 2(sp)
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bge 1f
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fadd.l #65536,fp0
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bra 1f
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2:
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fmove.l 2(sp),fp0
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tst.l 2(sp)
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bge 1f
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fsub.l #-2147483648,fp0
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fsub.l #-2147483648,fp0
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1:
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fmove.d fp0,(sp)
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jmp (a0)
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.cfi:
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move.l (sp)+,a0
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move.w (sp),d1
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move.w 2(sp),d0
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cmp.w #4,d0
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bne 1f
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fmove.s 4(sp),fp0
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bra 2f
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1:
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fmove.d 4(sp),fp0
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add.l #4,sp
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2:
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1991-02-01 15:33:41 +00:00
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fintrz fp0,fp0
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1991-02-01 15:09:58 +00:00
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cmp.w #2,d1
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bne 1f
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fmove.w fp0,6(sp)
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bra 2f
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1:
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fmove.l fp0,4(sp)
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2:
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cmp.w #4,d0
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beq 1f
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sub.l #4,sp
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1:
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jmp (a0)
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.cfu:
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move.l (sp)+,a0
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move.w (sp),d1
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move.w 2(sp),d2
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cmp.w #4,d2
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bne 1f
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fmove.s 4(sp),fp0
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fabs fp0
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cmp.l #0x4f000000,4(sp)
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bge 2f
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fintrz fp0,fp0
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fmove.l fp0,d0
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bra 3f
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2:
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fadd.l #-2147483648,fp0
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fintrz fp0,fp0
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fmove.l fp0,d0
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bchg #31,d0
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bra 3f
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1:
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fmove.d 4(sp),fp0
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add.l #4,sp
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fabs fp0
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cmp.l #0x41e00000,(sp)
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bge 1f
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fintrz fp0,fp0
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fmove.l fp0,d0
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bra 3f
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1:
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fadd.l #-2147483648,fp0
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fintrz fp0,fp0
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fmove.l fp0,d0
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bchg #31,d0
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3:
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cmp.w #2,d1
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bne 1f
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move.w d0,6(sp)
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bra 2f
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1:
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move.l d0,4(sp)
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2:
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cmp.w #4,d2
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beq 1f
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sub.l #4,sp
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1:
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jmp (a0)
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.cff4:
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move.l (sp)+,a0
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fmove.d (sp),fp0
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fmove.s fp0,4(sp)
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jmp (a0)
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.cff8:
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move.l (sp)+,a0
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fmove.s (sp),fp0
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fmove.d fp0,(sp)
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jmp (a0)
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.cmf4:
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move.l (sp)+,a0
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clr.l d0
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fmove.s (sp),fp0
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fmove.s 4(sp),fp1
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fcmp fp0,fp1
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fbeq 2f
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fblt 1f
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add.l #1,d0
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jmp (a0)
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1:
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sub.l #1,d0
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2:
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jmp (a0)
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.cmf8:
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move.l (sp)+,a0
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clr.l d0
|
|
|
|
|
fmove.d (sp),fp0
|
|
|
|
|
fmove.d 8(sp),fp1
|
|
|
|
|
fcmp fp0,fp1
|
|
|
|
|
fbeq 2f
|
|
|
|
|
fblt 1f
|
|
|
|
|
add.l #1,d0
|
|
|
|
|
jmp (a0)
|
|
|
|
|
1:
|
|
|
|
|
sub.l #1,d0
|
|
|
|
|
2:
|
|
|
|
|
jmp (a0)
|
