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Implement BITWIDTH and TZCOUNT functions (#1450)

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This commit is contained in:
Sylvie
2024-08-07 10:39:30 -04:00
committed by GitHub
parent 7435630d6a
commit e93190d491
10 changed files with 105 additions and 18 deletions
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10
src/asm/rpn.cpp
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@@ -9,7 +9,7 @@
#include <string.h>
#include <string_view>
#include "helpers.hpp" // assume
#include "helpers.hpp" // assume, clz, ctz
#include "opmath.hpp"
#include "asm/output.hpp"
@@ -319,6 +319,12 @@ void Expression::makeUnaryOp(RPNCommand op, Expression &&src) {
case RPN_LOW:
data = val & 0xFF;
break;
case RPN_BITWIDTH:
data = val != 0 ? 32 - clz((uint32_t)val) : 0;
break;
case RPN_TZCOUNT:
data = val != 0 ? ctz((uint32_t)val) : 32;
break;
case RPN_LOGOR:
case RPN_LOGAND:
@@ -498,6 +504,8 @@ void Expression::makeBinaryOp(RPNCommand op, Expression &&src1, Expression const
case RPN_RST:
case RPN_HIGH:
case RPN_LOW:
case RPN_BITWIDTH:
case RPN_TZCOUNT:
case RPN_CONST:
case RPN_SYM:
fatalerror("%d is not a binary operator\n", op);