File:  [CSRG BSD Unix] / 43BSDReno / sys / tahoealign / Aaobleq.c
Revision 1.1: download - view: text, annotated - select for diffs
Tue Apr 24 16:12:57 2018 UTC (8 years, 1 month ago) by root
CVS tags: MAIN, HEAD
Initial revision

/*	Aaobleq.c	1.1	86/07/20	*/

#include "../tahoealign/align.h" 
aobleq(infop)	process_info *infop;
/*
/*	Add one, branch if less or equal.
/*	Can't use real HW opcodes since we don't want to branch here.
/*
/*******************************************/
{
	register long limit, index, new_address, complement;

	limit = operand(infop,0)->data;
	index = operand(infop,1)->data;
	complement =  limit + ~index;
	if ( complement < 0){ carry_0; negative_1;} else{negative_0; carry_1;}
	if ( complement == 0) zero_1; else zero_0;
	overflow_0;  
	write_back (infop, index+1, operand(infop,1));
	new_address = operand(infop,2)->address;
	if (!negative || zero) pc = new_address;
}

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