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f64780a3bd
git-svn-id: https://svn.code.sf.net/p/acme-crossass/code-0/trunk@231 4df02467-bbd4-4a76-a152-e7ce94205b78
57 lines
2.0 KiB
C
57 lines
2.0 KiB
C
// ACME - a crossassembler for producing 6502/65c02/65816/65ce02 code.
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// Copyright (C) 1998-2020 Marco Baye
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// Have a look at "acme.c" for further info
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//
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// symbol stuff
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#ifndef symbol_H
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#define symbol_H
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#include <stdio.h>
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#include "config.h"
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struct symbol {
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struct object object; // number/list/string
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int pass; // pass of creation (for anon counters)
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boolean has_been_read; // to find out if actually used
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boolean has_been_reported; // indicates "has been reported as undefined"
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struct pseudopc *pseudopc; // NULL when defined outside of !pseudopc block
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// add file ref + line num of last definition
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};
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// Constants
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#define SCOPE_GLOBAL 0 // number of "global zone"
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// variables
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extern struct rwnode *symbols_forest[]; // trees (because of 8-bit hash)
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// search for symbol. if it does not exist, create with NULL type object (CAUTION!).
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// the symbol name must be held in GlobalDynaBuf.
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extern struct symbol *symbol_find(scope_t scope);
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// assign object to symbol. function acts upon the symbol's flag bits and
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// produces an error if needed.
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// using "power" bits, caller can state which changes are ok.
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#define POWER_NONE 0
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#define POWER_CHANGE_VALUE (1u << 0) // e.g. change 3 to 5 or 2.71
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#define POWER_CHANGE_OBJTYPE (1u << 1) // e.g. change 3 to "somestring"
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extern void symbol_set_object(struct symbol *symbol, struct object *new_obj, bits powers);
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// set force bit of symbol. trying to change to a different one will raise error.
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extern void symbol_set_force_bit(struct symbol *symbol, bits force_bit);
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// set global symbol to value, no questions asked (for "-D" switch)
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// name must be held in GlobalDynaBuf.
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extern void symbol_define(intval_t value);
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// dump global symbols to file
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extern void symbols_list(FILE *fd);
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// dump global labels to file in VICE format
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extern void symbols_vicelabels(FILE *fd);
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// fix name of anonymous forward label (held in GlobalDynaBuf, NOT TERMINATED!)
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// so it references the *next* anonymous forward label definition.
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extern void symbol_fix_forward_anon_name(boolean increment);
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#endif
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