ref: 3aabe9c79942736c1f7ebbfac3dee45927e39438
dir: /include/asm/rpn.h/
/* * This file is part of RGBDS. * * Copyright (c) 1997-2018, Carsten Sorensen and RGBDS contributors. * * SPDX-License-Identifier: MIT */ #ifndef RGBDS_ASM_RPN_H #define RGBDS_ASM_RPN_H #include <stdint.h> #include <stdbool.h> #include "linkdefs.h" #define MAXRPNLEN 1048576 struct Expression { int32_t val; // If the expression's value is known, it's here char *reason; // Why the expression is not known, if it isn't bool isKnown; // Whether the expression's value is known bool isSymbol; // Whether the expression represents a symbol uint8_t *rpn; // Array of bytes serializing the RPN expression uint32_t rpnCapacity; // Size of the `rpn` buffer uint32_t rpnLength; // Used size of the `rpn` buffer uint32_t rpnPatchSize; // Size the expression will take in the object file }; /* * Determines if an expression is known at assembly time */ static inline bool rpn_isKnown(struct Expression const *expr) { return expr->isKnown; } /* * Determines if an expression is a symbol suitable for const diffing */ static inline bool rpn_isSymbol(const struct Expression *expr) { return expr->isSymbol; } void rpn_Symbol(struct Expression *expr, char const *symName); void rpn_Number(struct Expression *expr, uint32_t i); void rpn_LOGNOT(struct Expression *expr, const struct Expression *src); struct Symbol const *rpn_SymbolOf(struct Expression const *expr); bool rpn_IsDiffConstant(struct Expression const *src, struct Symbol const *symName); void rpn_BinaryOp(enum RPNCommand op, struct Expression *expr, const struct Expression *src1, const struct Expression *src2); void rpn_HIGH(struct Expression *expr, const struct Expression *src); void rpn_LOW(struct Expression *expr, const struct Expression *src); void rpn_ISCONST(struct Expression *expr, const struct Expression *src); void rpn_UNNEG(struct Expression *expr, const struct Expression *src); void rpn_UNNOT(struct Expression *expr, const struct Expression *src); void rpn_BankSymbol(struct Expression *expr, char const *symName); void rpn_BankSection(struct Expression *expr, char const *sectionName); void rpn_BankSelf(struct Expression *expr); void rpn_SizeOfSection(struct Expression *expr, char const *sectionName); void rpn_StartOfSection(struct Expression *expr, char const *sectionName); void rpn_Free(struct Expression *expr); void rpn_CheckHRAM(struct Expression *expr, const struct Expression *src); void rpn_CheckRST(struct Expression *expr, const struct Expression *src); void rpn_CheckNBit(struct Expression const *expr, uint8_t n); int32_t rpn_GetConstVal(struct Expression const *expr); #endif /* RGBDS_ASM_RPN_H */