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59 lines
1.2 KiB
59 lines
1.2 KiB
/*[
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or.c
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LOCAL CHAR SccsID[]="@(#)or.c 1.5 02/09/94";
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OR CPU functions.
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-----------------
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]*/
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#include <insignia.h>
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#include <host_def.h>
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#include <xt.h>
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#include <c_main.h>
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#include <c_addr.h>
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#include <c_bsic.h>
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#include <c_prot.h>
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#include <c_seg.h>
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#include <c_stack.h>
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#include <c_xcptn.h>
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#include <c_reg.h>
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#include <or.h>
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/*
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=====================================================================
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EXTERNAL FUNCTIONS START HERE.
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=====================================================================
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*/
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/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
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/* Generic - one size fits all 'or'. */
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/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
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GLOBAL VOID
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OR
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IFN3(
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IU32 *, pop1, /* pntr to dst/lsrc operand */
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IU32, op2, /* rsrc operand */
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IUM8, op_sz /* 8, 16 or 32-bit */
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)
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{
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IU32 result;
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result = *pop1 | op2; /* Do operation */
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SET_CF(0); /* Determine flags */
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SET_OF(0);
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SET_AF(0);
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SET_PF(pf_table[result & BYTE_MASK]);
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SET_ZF(result == 0);
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SET_SF((result & SZ2MSB(op_sz)) != 0); /* SF = MSB */
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*pop1 = result; /* Return answer */
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}
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