1 /*****************************************************************************/
5 /* Symbol table entries for the cc65 C compiler */
9 /* (C) 2000-2009, Ullrich von Bassewitz */
10 /* Roemerstrasse 52 */
11 /* D-70794 Filderstadt */
12 /* EMail: uz@cc65.org */
15 /* This software is provided 'as-is', without any expressed or implied */
16 /* warranty. In no event will the authors be held liable for any damages */
17 /* arising from the use of this software. */
19 /* Permission is granted to anyone to use this software for any purpose, */
20 /* including commercial applications, and to alter it and redistribute it */
21 /* freely, subject to the following restrictions: */
23 /* 1. The origin of this software must not be misrepresented; you must not */
24 /* claim that you wrote the original software. If you use this software */
25 /* in a product, an acknowledgment in the product documentation would be */
26 /* appreciated but is not required. */
27 /* 2. Altered source versions must be plainly marked as such, and must not */
28 /* be misrepresented as being the original software. */
29 /* 3. This notice may not be removed or altered from any source */
32 /*****************************************************************************/
53 /*****************************************************************************/
55 /*****************************************************************************/
63 /*****************************************************************************/
65 /*****************************************************************************/
69 /* Storage classes and flags */
70 #define SC_AUTO 0x0001U /* Auto variable */
71 #define SC_REGISTER 0x0002U /* Register variable */
72 #define SC_STATIC 0x0004U /* Static */
73 #define SC_EXTERN 0x0008U /* Extern linkage */
75 #define SC_ENUM 0x0030U /* An enum */
76 #define SC_CONST 0x0020U /* A numeric constant with a type */
77 #define SC_LABEL 0x0040U /* A goto label */
78 #define SC_PARAM 0x0080U /* A function parameter */
79 #define SC_FUNC 0x0100U /* A function */
81 #define SC_DEFTYPE 0x0200U /* Parameter has default type (=int, old style) */
82 #define SC_STORAGE 0x0400U /* Symbol with associated storage */
83 #define SC_DEFAULT 0x0800U /* Flag: default storage class was used */
85 #define SC_DEF 0x1000U /* Symbol is defined */
86 #define SC_REF 0x2000U /* Symbol is referenced */
88 #define SC_TYPE 0x4000U /* This is a type, struct, typedef, etc. */
89 #define SC_STRUCT 0x4001U /* Struct or union */
90 #define SC_STRUCTFIELD 0x4002U /* Struct or union field */
91 #define SC_BITFIELD 0x4004U /* A bit-field inside a struct or union */
92 #define SC_TYPEDEF 0x4008U /* A typedef */
94 #define SC_ZEROPAGE 0x8000U /* Symbol marked as zeropage */
96 #define SC_HAVEATTR 0x10000U /* Symbol has attributes */
100 /* Symbol table entry */
101 typedef struct SymEntry SymEntry;
103 SymEntry* NextHash; /* Next entry in hash list */
104 SymEntry* PrevSym; /* Previous symbol in dl list */
105 SymEntry* NextSym; /* Next symbol double linked list */
106 SymEntry* Link; /* General purpose single linked list */
107 struct SymTable* Owner; /* Symbol table the symbol is in */
108 unsigned Flags; /* Symbol flags */
109 Type* Type; /* Symbol type */
110 Collection* Attr; /* Attribute list if any */
111 char* AsmName; /* Assembler name if any */
113 /* Data that differs for the different symbol types */
116 /* Offset for locals or struct members */
119 /* Label name for static symbols */
122 /* Register bank offset and offset of the saved copy on stack for
123 * register variables.
130 /* Value for constants (including enums) */
133 /* Data for structs/unions */
135 struct SymTable* SymTab; /* Member symbol table */
136 unsigned Size; /* Size of the union/struct */
139 /* Data for bit fields */
141 unsigned Offs; /* Byte offset into struct */
142 unsigned BitOffs; /* Bit offset into storage unit */
143 unsigned BitWidth; /* Width in bits */
146 /* Data for functions */
148 struct FuncDesc* Func; /* Function descriptor */
149 struct Segments* Seg; /* Segments for this function */
153 char Name[1]; /* Name, dynamically allocated */
158 /*****************************************************************************/
160 /*****************************************************************************/
164 SymEntry* NewSymEntry (const char* Name, unsigned Flags);
165 /* Create a new symbol table with the given name */
167 void FreeSymEntry (SymEntry* E);
168 /* Free a symbol entry */
170 void DumpSymEntry (FILE* F, const SymEntry* E);
171 /* Dump the given symbol table entry to the file in readable form */
173 #if defined(HAVE_INLINE)
174 INLINE int SymIsBitField (const SymEntry* Sym)
175 /* Return true if the given entry is a bit-field entry */
177 return ((Sym->Flags & SC_BITFIELD) == SC_BITFIELD);
180 # define SymIsBitField(Sym) (((Sym)->Flags & SC_BITFIELD) == SC_BITFIELD)
183 #if defined(HAVE_INLINE)
184 INLINE int SymIsTypeDef (const SymEntry* Sym)
185 /* Return true if the given entry is a typedef entry */
187 return ((Sym->Flags & SC_TYPEDEF) == SC_TYPEDEF);
190 # define SymIsTypeDef(Sym) (((Sym)->Flags & SC_TYPEDEF) == SC_TYPEDEF)
193 #if defined(HAVE_INLINE)
194 INLINE int SymIsDef (const SymEntry* Sym)
195 /* Return true if the given entry is defined */
197 return ((Sym->Flags & SC_DEF) == SC_DEF);
200 # define SymIsDef(Sym) (((Sym)->Flags & SC_DEF) == SC_DEF)
203 #if defined(HAVE_INLINE)
204 INLINE int SymIsRef (const SymEntry* Sym)
205 /* Return true if the given entry is referenced */
207 return ((Sym->Flags & SC_REF) == SC_REF);
210 # define SymIsRef(Sym) (((Sym)->Flags & SC_REF) == SC_REF)
213 #if defined(HAVE_INLINE)
214 INLINE int SymIsRegVar (const SymEntry* Sym)
215 /* Return true if the given entry is a register variable */
216 /* ### HACK! Fix the ugly type flags! */
218 return ((Sym->Flags & (SC_REGISTER|SC_TYPE)) == SC_REGISTER);
221 # define SymIsRegVar(Sym) (((Sym)->Flags & (SC_REGISTER|SC_TYPE)) == SC_REGISTER)
224 #if defined(HAVE_INLINE)
225 INLINE const char* SymGetAsmName (const SymEntry* Sym)
226 /* Return the assembler label name for the symbol (beware: may be NULL!) */
231 # define SymGetAsmName(Sym) ((Sym)->AsmName)
234 const DeclAttr* SymGetAttr (const SymEntry* Sym, DeclAttrType AttrType);
235 /* Return an attribute for this symbol or NULL if the attribute does not exist */
237 #if defined(HAVE_INLINE)
238 INLINE int SymHasAttr (const SymEntry* Sym, DeclAttrType A)
239 /* Return true if the symbol has the given attribute */
241 return (SymGetAttr (Sym, A) != 0);
244 # define SymHasAttr(Sym, A) (SymGetAttr (Sym, A) != 0)
247 void SymUseAttr (SymEntry* Sym, struct Declaration* D);
248 /* Use the attributes from the declaration for this symbol */
250 void CvtRegVarToAuto (SymEntry* Sym);
251 /* Convert a register variable to an auto variable */
253 void ChangeSymType (SymEntry* Entry, Type* T);
254 /* Change the type of the given symbol */
256 void ChangeAsmName (SymEntry* Entry, const char* NewAsmName);
257 /* Change the assembler name of the symbol */
259 int HasAnonName (const SymEntry* Entry);
260 /* Return true if the symbol entry has an anonymous name */
264 /* End of symentry.h */