/* Copyright (c) 1990 The Regents of the University of California. All rights reserved. Redistribution and use in source and binary forms are permitted provided that the above copyright notice and this paragraph are duplicated in all such forms and that any documentation, and/or other materials related to such distribution and use acknowledge that the software was developed by the University of California, Berkeley. The name of the University may not be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ .title "H8/500 DIVIDE" !! 2 byte integer Divide code for the H8/500 !! !! Steve Chamberlain !! sac@cygnus.com !! !! !! args in r1 and r4, result in r0/r1 #if __CODE__==32 #define RET prts #else #define RET rts #endif .global __divmodhi4 __divmodhi4: clr.w r0 tst.w r1 ! neg arg1 bpl PU neg.w r1 NU: tst.w r4 bmi NN NP: divxu.w r4,r0 neg.w r0 neg.w r1 RET NN: neg.w r4 divxu.w r4,r0 neg.w r0 ! get rem sign right RET PU: tst.w r4 bpl PP PN: neg.w r4 divxu.w r4,r0 neg.w r1 RET PP: divxu.w r4,r0 ! rem in r0, q in r1 RET