git.sur5r.net Git - cc65/blob - src/cc65/symentry.c

   1 /*****************************************************************************/
   2 /*                                                                           */
   3 /*                                symentry.c                                 */
   4 /*                                                                           */
   5 /*               Symbol table entries for the cc65 C compiler                */
   6 /*                                                                           */
   7 /*                                                                           */
   8 /*                                                                           */
   9 /* (C) 2000     Ullrich von Bassewitz                                        */
  10 /*              Wacholderweg 14                                              */
  11 /*              D-70597 Stuttgart                                            */
  12 /* EMail:       uz@musoftware.de                                             */
  13 /*                                                                           */
  14 /*                                                                           */
  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.                                    */
  18 /*                                                                           */
  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:                            */
  22 /*                                                                           */
  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              */
  30 /*    distribution.                                                          */
  31 /*                                                                           */
  32 /*****************************************************************************/
  33
  34
  35
  36 #include "mem.h"
  37 #include "symentry.h"
  38
  39
  40
  41 /*****************************************************************************/
  42 /*                                   Code                                    */
  43 /*****************************************************************************/
  44
  45
  46
  47 SymEntry* NewSymEntry (const char* Name, unsigned Flags)
  48 /* Create a new symbol table with the given name */
  49 {
  50     /* Get the length of the name */
  51     unsigned Len = strlen (Name);
  52
  53     /* Allocate memory for the symbol entry */
  54     SymEntry* E = xmalloc (sizeof (SymEntry) + Len);
  55
  56     /* Initialize the entry */
  57     E->NextHash = 0;
  58     E->PrevSym  = 0;
  59     E->NextSym  = 0;
  60     E->Link     = 0;
  61     E->Owner    = 0;
  62     E->Flags    = Flags;
  63     E->Type     = 0;
  64     memcpy (E->Name, Name, Len+1);
  65
  66     /* Return the new entry */
  67     return E;
  68 }
  69
  70
  71
  72 void FreeSymEntry (SymEntry* E)
  73 /* Free a symbol entry */
  74 {
  75     TypeFree (E->Type);
  76     xfree (E);
  77 }
  78
  79
  80
  81 void DumpSymEntry (FILE* F, const SymEntry* E)
  82 /* Dump the given symbol table entry to the file in readable form */
  83 {
  84     static const struct {
  85         const char*         Name;
  86         unsigned            Val;
  87     } Flags [] = {
  88         /* Beware: Order is important! */
  89         { "SC_TYPEDEF",     SC_TYPEDEF  },
  90         { "SC_SFLD",        SC_SFLD     },
  91         { "SC_STRUCT",      SC_STRUCT   },
  92         { "SC_AUTO",        SC_AUTO     },
  93         { "SC_REGISTER",    SC_REGISTER },
  94         { "SC_STATIC",      SC_STATIC   },
  95         { "SC_EXTERN",      SC_EXTERN   },
  96         { "SC_ENUM",        SC_ENUM     },
  97         { "SC_LABEL",       SC_LABEL    },
  98         { "SC_PARAM",       SC_PARAM    },
  99         { "SC_FUNC",        SC_FUNC     },
 100         { "SC_STORAGE",     SC_STORAGE  },
 101         { "SC_DEF",         SC_DEF      },
 102         { "SC_REF",         SC_REF      },
 103         { "SC_ZEROPAGE",    SC_ZEROPAGE },
 104     };
 105
 106     unsigned I;
 107     unsigned SymFlags;
 108
 109     /* Print the name */
 110     fprintf (F, "%s:\n", E->Name);
 111
 112     /* Print the flags */
 113     SymFlags = E->Flags;
 114     fprintf (F, "    Flags: ");
 115     for (I = 0; I < sizeof (Flags) / sizeof (Flags[0]) && SymFlags != 0; ++I) {
 116         if ((SymFlags & Flags[I].Val) == Flags[I].Val) {
 117             SymFlags &= ~Flags[I].Val;
 118             fprintf (F, "%s ", Flags[I].Name);
 119         }
 120     }
 121     if (SymFlags != 0) {
 122         fprintf (F, "%04X", SymFlags);
 123     }
 124     fprintf (F, "\n");
 125
 126     /* Print the type */
 127     fprintf (F, "    Type:  ");
 128     if (E->Type) {
 129         PrintType (F, E->Type);
 130     } else {
 131         fprintf (F, "(none)\n");
 132     }
 133 }
 134
 135
 136
 137 int IsTypeDef (const SymEntry* E)
 138 /* Return true if the given entry is a typedef entry */
 139 {
 140     return ((E->Flags & SC_TYPEDEF) == SC_TYPEDEF);
 141 }
 142
 143
 144
 145 void ChangeSymType (SymEntry* Entry, type* Type)
 146 /* Change the type of the given symbol */
 147 {
 148     TypeFree (Entry->Type);
 149     Entry->Type = TypeDup (Type);
 150 }
 151
 152
 153
 154