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cc65/src/cc65/symentry.h

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/*****************************************************************************/
/* */
/* symentry.h */
/* */
/* Symbol table entries for the cc65 C compiler */
/* */
/* */
/* */
/* (C) 2000-2013, Ullrich von Bassewitz */
/* Roemerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
#ifndef SYMENTRY_H
#define SYMENTRY_H
#include <stdio.h>
/* common */
#include "coll.h"
#include "inline.h"
/* cc65 */
#include "datatype.h"
#include "declattr.h"
/*****************************************************************************/
/* Forwards */
/*****************************************************************************/
struct SegContext;
struct LiteralPool;
struct CodeEntry;
/*****************************************************************************/
/* struct SymEntry */
/*****************************************************************************/
/* Storage classes and flags */
#define SC_NONE 0x0000U /* Nothing */
#define SC_STRUCT 0x0001U /* Struct */
#define SC_UNION 0x0002U /* Union */
#define SC_ENUM 0x0003U /* Enum */
#define SC_TYPEDEF 0x0004U /* Typedef */
#define SC_ESUTYPEMASK 0x0007U /* Mask for above types */
#define SC_ENUMERATOR 0x0008U /* An enumerator */
#define SC_BITFIELD 0x0010U /* A bit-field inside a struct or union */
#define SC_TYPEMASK 0x001FU /* Mask for above types */
#define SC_FUNC 0x0020U /* A function */
#define SC_LABEL 0x0040U /* A goto code label */
#define SC_CONST 0x0080U /* A numeric constant with a type */
#define SC_PARAM 0x0100U /* A function parameter */
#define SC_DEFTYPE 0x0200U /* Parameter has default type (=int, old style) */
#define SC_STRUCTFIELD 0x0400U /* Struct or union field */
#define SC_ZEROPAGE 0x0800U /* Symbol marked as zeropage */
#define SC_DEF 0x1000U /* Symbol is defined */
#define SC_REF 0x2000U /* Symbol is referenced */
#define SC_DECL 0x4000U /* Symbol is declared in global scope */
#define SC_STORAGE 0x8000U /* Symbol with associated storage */
#define SC_AUTO 0x010000U /* Auto variable */
#define SC_REGISTER 0x020000U /* Register variable */
#define SC_STATIC 0x040000U /* Static - not to be confused with other *_STATIC */
#define SC_EXTERN 0x080000U /* Extern linkage */
#define SC_STORAGEMASK 0x0F0000U /* Storage type mask */
#define SC_HAVEATTR 0x100000U /* Symbol has attributes */
#define SC_GOTO 0x200000U
#define SC_SPADJUSTMENT 0x400000U
#define SC_GOTO_IND 0x800000U /* Indirect goto */
#define SC_ALIAS 0x01000000U /* Alias of global or anonymous field */
#define SC_FICTITIOUS 0x02000000U /* Symbol is fictitious (for error recovery) */
#define SC_HAVEFAM 0x04000000U /* Type has a Flexible Array Member */
#define SC_HAVECONST 0x08000000U /* Type has a const member */
/* Label definition or reference */
typedef struct DefOrRef DefOrRef;
struct DefOrRef {
unsigned Line;
size_t LocalsBlockId;
unsigned Flags;
int StackPtr;
unsigned Depth;
unsigned LateSP_Label;
};
/* Symbol table entry */
typedef struct SymEntry SymEntry;
struct SymEntry {
SymEntry* NextHash; /* Next entry in hash list */
SymEntry* PrevSym; /* Previous symbol in dl list */
SymEntry* NextSym; /* Next symbol double linked list */
struct SymTable* Owner; /* Symbol table the symbol is in */
unsigned Flags; /* Symbol flags */
Type* Type; /* Symbol type */
Collection* Attr; /* Attribute list if any */
char* AsmName; /* Assembler name if any */
/* Data that differs for the different symbol types */
union {
/* Offset for locals */
int Offs;
/* Register bank offset and offset of the saved copy on stack for
** register variables.
*/
struct {
int RegOffs;
int SaveOffs;
} R;
/* Segment name for tentantive global definitions */
const char* BssName;
/* Value for integer constants (including enumerators) */
long ConstVal;
/* Data for functions */
struct {
struct SegContext* Seg; /* SegContext for this function */
struct LiteralPool* LitPool; /* Literal pool for this function */
struct SymEntry* WrappedCall; /* Pointer to the WrappedCall */
unsigned int WrappedCallData; /* The WrappedCall's user data */
} F;
/* Label name for static symbols */
struct {
unsigned Label;
Collection *DefsOrRefs;
struct CodeEntry *IndJumpFrom;
} L;
/* Value of SP adjustment needed after forward 'goto' */
unsigned short SPAdjustment;
/* Data for anonymous struct or union members */
struct {
int Offs; /* Byte offset into struct */
unsigned ANumber; /* Numeric ID */
SymEntry* Field; /* The real field aliased */
} A;
/* Data for structs/unions tags */
struct {
struct SymTable* SymTab; /* Member symbol table */
unsigned Size; /* Size of the union/struct */
unsigned ACount; /* Count of anonymous fields */
} S;
/* Data for enums tags */
struct {
struct SymTable* SymTab; /* Member symbol table */
const Type* Type; /* Underlying type */
} E;
} V;
char Name[1]; /* Name, dynamically allocated */
};
/*****************************************************************************/
/* Code */
/*****************************************************************************/
SymEntry* NewSymEntry (const char* Name, unsigned Flags);
/* Create a new symbol table with the given name */
void FreeSymEntry (SymEntry* E);
/* Free a symbol entry */
void DumpSymEntry (FILE* F, const SymEntry* E);
/* Dump the given symbol table entry to the file in readable form */
#if defined(HAVE_INLINE)
INLINE int SymIsBitField (const SymEntry* Sym)
/* Return true if the given entry is a bit-field entry */
{
return ((Sym->Flags & SC_BITFIELD) == SC_BITFIELD);
}
#else
# define SymIsBitField(Sym) (((Sym)->Flags & SC_BITFIELD) == SC_BITFIELD)
#endif
#if defined(HAVE_INLINE)
INLINE int SymIsTypeDef (const SymEntry* Sym)
/* Return true if the given entry is a typedef entry */
{
return ((Sym->Flags & SC_TYPEMASK) == SC_TYPEDEF);
}
#else
# define SymIsTypeDef(Sym) (((Sym)->Flags & SC_TYPEMASK) == SC_TYPEDEF)
#endif
#if defined(HAVE_INLINE)
INLINE int SymIsDef (const SymEntry* Sym)
/* Return true if the given entry is defined */
{
return ((Sym->Flags & SC_DEF) == SC_DEF);
}
#else
# define SymIsDef(Sym) (((Sym)->Flags & SC_DEF) == SC_DEF)
#endif
#if defined(HAVE_INLINE)
INLINE int SymIsRef (const SymEntry* Sym)
/* Return true if the given entry is referenced */
{
return ((Sym->Flags & SC_REF) == SC_REF);
}
#else
# define SymIsRef(Sym) (((Sym)->Flags & SC_REF) == SC_REF)
#endif
#if defined(HAVE_INLINE)
INLINE int SymIsRegVar (const SymEntry* Sym)
/* Return true if the given entry is a register variable */
/* ### HACK! Fix the ugly type flags! */
{
return ((Sym->Flags & (SC_REGISTER | SC_TYPEMASK)) == SC_REGISTER);
}
#else
# define SymIsRegVar(Sym) (((Sym)->Flags & (SC_REGISTER | SC_TYPEMASK)) == SC_REGISTER)
#endif
int SymIsOutputFunc (const SymEntry* Sym);
/* Return true if this is a function that must be output */
#if defined(HAVE_INLINE)
INLINE int SymHasFlexibleArrayMember (const SymEntry* Sym)
/* Return true if the given entry has a flexible array member */
{
return ((Sym->Flags & SC_HAVEFAM) == SC_HAVEFAM);
}
#else
# define SymHasFlexibleArrayMember(Sym) (((Sym)->Flags & SC_HAVEFAM) == SC_HAVEFAM)
#endif
#if defined(HAVE_INLINE)
INLINE int SymHasConstMember (const SymEntry* Sym)
/* Return true if the given entry has a const member */
{
return ((Sym->Flags & SC_HAVECONST) == SC_HAVECONST);
}
#else
# define SymHasConstMember(Sym) (((Sym)->Flags & SC_HAVECONST) == SC_HAVECONST)
#endif
#if defined(HAVE_INLINE)
INLINE const char* SymGetAsmName (const SymEntry* Sym)
/* Return the assembler label name for the symbol (beware: may be NULL!) */
{
return Sym->AsmName;
}
#else
# define SymGetAsmName(Sym) ((Sym)->AsmName)
#endif
const DeclAttr* SymGetAttr (const SymEntry* Sym, DeclAttrType AttrType);
/* Return an attribute for this symbol or NULL if the attribute does not exist */
#if defined(HAVE_INLINE)
INLINE int SymHasAttr (const SymEntry* Sym, DeclAttrType A)
/* Return true if the symbol has the given attribute */
{
return (SymGetAttr (Sym, A) != 0);
}
#else
# define SymHasAttr(Sym, A) (SymGetAttr (Sym, A) != 0)
#endif
void SymUseAttr (SymEntry* Sym, struct Declarator* D);
/* Use the attributes from the declarator for this symbol */
void SymSetAsmName (SymEntry* Sym);
/* Set the assembler name for an external symbol from the name of the symbol.
** The symbol must have no assembler name set yet.
*/
void SymCvtRegVarToAuto (SymEntry* Sym);
/* Convert a register variable to an auto variable */
void SymChangeType (SymEntry* Sym, const Type* T);
/* Change the type of the given symbol */
void SymChangeAsmName (SymEntry* Sym, const char* NewAsmName);
/* Change the assembler name of the symbol */
int SymHasAnonName (const SymEntry* Sym);
/* Return true if the symbol entry has an anonymous name */
/* End of symentry.h */
#endif
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