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51 lines
802 B
C
51 lines
802 B
C
/*
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abCOpRl.c
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By: Jeremy Rand
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*/
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#include <stdio.h>
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#include "abCOpRl.h"
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#include "abCOp.h"
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#include "abCError.h"
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#include "abCExpr.h"
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#include "abCExprInt.h"
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#include "abCMode.h"
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#include "abCStack.h"
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#define OP_NAME "RL"
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static void rlExecute(void);
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void abCalcOpRlInit(void)
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{
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abCalcOpRegister(OP_NAME, rlExecute);
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}
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void rlExecute(void)
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{
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abCalcExpr result;
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int width;
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int topBit;
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AB_CALC_OP_ONE_ARG(OP_NAME);
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if (expr->type != abCalcExprTypeInt) {
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abCalcRaiseError(abCalcBadArgTypeError, OP_NAME);
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return;
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}
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width = abCalcModeGetIntWidth();
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topBit = ((expr->u.integer >> (width - 1)) & 1);
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abCalcExprIntSet(&result, ((expr->u.integer << 1) | topBit));
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abCalcStackExprPop(NULL);
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abCalcStackExprPush(&result);
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}
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