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39 lines
747 B
ArmAsm
39 lines
747 B
ArmAsm
/*
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*
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* (c) 2004,2005 Laurent Vivier <Laurent@lvivier.info>
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*
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* Some parts from libgcc routines for 68000 w/o floating-point hardware.
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* Copyright (C) 1994, 1996, 1997, 1998 Free Software Foundation, Inc.
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*
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*/
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.cpu 68000
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.align 2
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.globl __divsi3
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__divsi3:
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movel %d2, %sp@-
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moveq #1, %d2 /* sign of result stored in %d2 (=1 or =-1) */
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movel %sp@(12), %d1 /* %d1 = divisor */
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jpl __divsi3L1
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negl %d1
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negb %d2 /* change sign because divisor <0 */
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__divsi3L1: movel %sp@(8), %d0 /* %d0 = dividend */
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jpl __divsi3L2
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negl %d0
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negb %d2
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__divsi3L2: movel %d1, %sp@-
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movel %d0, %sp@-
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bsr __udivsi3 /* divide abs(dividend) by abs(divisor) */
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addql #8, %sp
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tstb %d2
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jpl __divsi3L3
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negl %d0
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__divsi3L3: movel %sp@+, %d2
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rts
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