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eff8c324c8
C++ acts like structs are `typedef`ed by default We do have to keep `struct stat`, since there's ambiguity with the function also called `stat`.
59 lines
2.2 KiB
C++
59 lines
2.2 KiB
C++
/* SPDX-License-Identifier: MIT */
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#ifndef RGBDS_ASM_RPN_H
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#define RGBDS_ASM_RPN_H
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#include <stdint.h>
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#include <string>
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#include "linkdefs.hpp"
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struct Symbol;
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struct Expression {
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int32_t val; // If the expression's value is known, it's here
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std::string *reason; // Why the expression is not known, if it isn't
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bool isKnown; // Whether the expression's value is known
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bool isSymbol; // Whether the expression represents a symbol
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std::vector<uint8_t> *rpn; // Bytes serializing the RPN expression
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uint32_t rpnPatchSize; // Size the expression will take in the object file
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};
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// Determines if an expression is known at assembly time
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static inline bool rpn_isKnown(Expression const *expr)
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{
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return expr->isKnown;
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}
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// Determines if an expression is a symbol suitable for const diffing
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static inline bool rpn_isSymbol(const Expression *expr)
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{
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return expr->isSymbol;
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}
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void rpn_Symbol(Expression *expr, char const *symName);
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void rpn_Number(Expression *expr, uint32_t i);
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void rpn_LOGNOT(Expression *expr, const Expression *src);
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Symbol const *rpn_SymbolOf(Expression const *expr);
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bool rpn_IsDiffConstant(Expression const *src, Symbol const *symName);
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void rpn_BinaryOp(enum RPNCommand op, Expression *expr, const Expression *src1, const Expression *src2);
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void rpn_HIGH(Expression *expr, const Expression *src);
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void rpn_LOW(Expression *expr, const Expression *src);
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void rpn_ISCONST(Expression *expr, const Expression *src);
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void rpn_NEG(Expression *expr, const Expression *src);
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void rpn_NOT(Expression *expr, const Expression *src);
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void rpn_BankSymbol(Expression *expr, char const *symName);
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void rpn_BankSection(Expression *expr, char const *sectionName);
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void rpn_BankSelf(Expression *expr);
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void rpn_SizeOfSection(Expression *expr, char const *sectionName);
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void rpn_StartOfSection(Expression *expr, char const *sectionName);
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void rpn_SizeOfSectionType(Expression *expr, enum SectionType type);
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void rpn_StartOfSectionType(Expression *expr, enum SectionType type);
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void rpn_Free(Expression *expr);
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void rpn_CheckHRAM(Expression *expr, const Expression *src);
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void rpn_CheckRST(Expression *expr, const Expression *src);
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void rpn_CheckNBit(Expression const *expr, uint8_t n);
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int32_t rpn_GetConstVal(Expression const *expr);
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#endif // RGBDS_ASM_RPN_H
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