ref: 61897d8b52bd45234b36cd379dde950bb9148bcc
dir: /include/asm/symbol.h/
/* * This file is part of RGBDS. * * Copyright (c) 1997-2020, Carsten Sorensen and RGBDS contributors. * * SPDX-License-Identifier: MIT */ #ifndef RGBDS_SYMBOL_H #define RGBDS_SYMBOL_H #include <stdbool.h> #include <stdint.h> #include <string.h> #include "types.h" #define HASHSIZE (1 << 16) #define MAXSYMLEN 256 enum SymbolType { SYM_LABEL, SYM_EQU, SYM_SET, SYM_MACRO, SYM_EQUS, SYM_REF // Forward reference to a label }; struct sSymbol { char tzName[MAXSYMLEN + 1]; enum SymbolType type; bool isConstant; /* Whether the symbol's value is currently known */ bool isExported; /* Whether the symbol is to be exported */ bool isBuiltin; /* Whether the symbol is a built-in */ struct sSymbol *pScope; struct sSymbol *pNext; struct Section *pSection; int32_t nValue; uint32_t ulMacroSize; char *pMacro; int32_t (*Callback)(struct sSymbol const *self); char tzFileName[_MAX_PATH + 1]; /* File where the symbol was defined. */ uint32_t nFileLine; /* Line where the symbol was defined. */ }; static inline bool sym_IsDefined(struct sSymbol const *sym) { return sym->type != SYM_REF; } static inline bool sym_IsConstant(struct sSymbol const *sym) { return sym->isConstant; } static inline bool sym_IsNumeric(struct sSymbol const *sym) { return sym->type == SYM_LABEL || sym->type == SYM_EQU || sym->type == SYM_SET; } static inline bool sym_IsLabel(struct sSymbol const *sym) { return sym->type == SYM_LABEL || sym->type == SYM_REF; } static inline bool sym_IsLocal(struct sSymbol const *sym) { return sym_IsLabel(sym) && strchr(sym->tzName, '.'); } static inline bool sym_IsExported(struct sSymbol const *sym) { return sym->isExported; } /* * Get a string equate's value */ static inline char *sym_GetStringValue(struct sSymbol const *sym) { return sym->pMacro; } int32_t sym_GetValue(struct sSymbol const *sym); uint32_t sym_CalcHash(const char *s); void sym_SetExportAll(bool set); struct sSymbol *sym_AddLocalReloc(char const *tzSym); struct sSymbol *sym_AddReloc(char const *tzSym); void sym_Export(char const *tzSym); struct sSymbol *sym_FindMacro(char const *s); struct sSymbol *sym_AddEqu(char const *tzSym, int32_t value); struct sSymbol *sym_AddSet(char const *tzSym, int32_t value); void sym_Init(void); uint32_t sym_GetConstantValue(char const *s); struct sSymbol *sym_FindSymbol(char const *tzName); char *sym_GetStringValue(struct sSymbol const *sym); struct sSymbol *sym_AddMacro(char const *tzSym, int32_t nDefLineNo); void sym_Ref(char const *tzSym); struct sSymbol *sym_AddString(char const *tzSym, char const *tzValue); uint32_t sym_GetDefinedValue(char const *s); void sym_Purge(char const *tzName); /* Functions to save and restore the current symbol scope. */ struct sSymbol *sym_GetCurrentSymbolScope(void); void sym_SetCurrentSymbolScope(struct sSymbol *pNewScope); #endif /* RGBDS_SYMBOL_H */