ref: 5013b64f556fa8b185b09f23cf7f71908c4cd48b
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 nVal; // 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 *tRPN; // Array of bytes serializing the RPN expression uint32_t nRPNCapacity; // Size of the `tRPN` buffer uint32_t nRPNLength; // Used size of the `tRPN` buffer uint32_t nRPNPatchSize; // Size the expression will take in the obj file }; /* FIXME: Should be defined in `asmy.h`, but impossible with POSIX Yacc */ extern int32_t nPCOffset; /* * Determines if an expression is known at assembly time */ static inline bool rpn_isKnown(const struct Expression *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 *tzSym); void rpn_Number(struct Expression *expr, uint32_t i); void rpn_LOGNOT(struct Expression *expr, const struct Expression *src); 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 *tzSym); void rpn_BankSection(struct Expression *expr, char const *tzSectionName); void rpn_BankSelf(struct Expression *expr); 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); #endif /* RGBDS_ASM_RPN_H */