100 lines
2.4 KiB
C
100 lines
2.4 KiB
C
/* symbol.h - manage all kinds of symbols */
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/* (c) in 2014-2018 by Volker Barthelmann and Frank Wille */
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#ifndef SYMBOL_H
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#define SYMBOL_H
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/* symbol types */
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#define LABSYM 1
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#define IMPORT 2
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#define EXPRESSION 3
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/* symbol flags */
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#define TYPE_MASK 7
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#define TYPE_UNKNOWN 0
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#define TYPE_OBJECT 1
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#define TYPE_FUNCTION 2
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#define TYPE_SECTION 3
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#define TYPE_FILE 4
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#define TYPE_LAST 4
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#define TYPE(sym) ((sym)->flags&TYPE_MASK)
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#define EXPORT (1<<3)
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#define INEVAL (1<<4)
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#define COMMON (1<<5)
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#define WEAK (1<<6)
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#define LOCAL (1<<7) /* only informational */
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#define VASMINTERN (1<<8)
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#define PROTECTED (1<<9)
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#define REFERENCED (1<<10) /* referenced by a relocation */
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#define ABSLABEL (1<<11)
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#define EQUATE (1<<12)
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#define REGLIST (1<<13)
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#define USED (1<<14) /* used in any expression */
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#define NEAR (1<<15) /* may refer symbol with near addressing modes */
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#define RSRVD_S (1L<<24) /* bits 24..27 are reserved for syntax modules */
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#define RSRVD_O (1L<<28) /* bits 28..31 are reserved for output modules */
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struct symbol {
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struct symbol *next;
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int type;
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uint32_t flags;
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char *name;
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expr *expr;
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expr *size;
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section *sec;
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taddr pc;
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taddr align;
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unsigned long idx; /* usable by output module */
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};
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/* type of symbol references */
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#define LOCREF(symp) ((symp)->type==LABSYM&&!((symp)->flags&WEAK))
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#define EXTREF(symp) ((symp)->type==IMPORT||((symp)->flags&WEAK))
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#ifdef HAVE_REGSYMS
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/* register symbols */
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struct regsym {
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char *reg_name;
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int reg_type;
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unsigned int reg_flags;
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unsigned int reg_num;
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};
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#endif /* HAVE_REGSYMS */
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extern symbol *first_symbol;
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void print_symbol(FILE *,symbol *);
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char *get_bind_name(symbol *);
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void add_symbol(symbol *);
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symbol *find_symbol(char *);
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void refer_symbol(symbol *,char *);
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void save_symbols(void);
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void restore_symbols(void);
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int check_symbol(char *);
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char *set_last_global_label(char *);
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int is_local_label(char *);
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char *make_local_label(char *,int,char *,int);
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symbol *new_abs(char *,expr *);
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symbol *new_equate(char *,expr *);
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symbol *new_import(char *);
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symbol *new_labsym(section *,char *);
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symbol *new_tmplabel(section *);
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symbol *internal_abs(char *);
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expr *set_internal_abs(char *,taddr);
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#ifdef HAVE_REGSYMS
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void add_regsym(regsym *);
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regsym *find_regsym(char *,int);
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regsym *find_regsym_nc(char *,int);
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regsym *new_regsym(int,int,char *,int,unsigned int,unsigned int);
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int undef_regsym(char *,int,int);
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#endif /* HAVE_REGSYMS */
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int init_symbol(void);
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#endif
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