usr/src/sys/tahoe/align/Aaobleq.c

/*      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;
}