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 "../common/xmalloc.h"
  37
  38 #include "symentry.h"
  39
  40
  41
  42 /*****************************************************************************/
  43 /*                                   Code                                    */
  44 /*****************************************************************************/
  45
  46
  47
  48 SymEntry* NewSymEntry (const char* Name, unsigned Flags)
  49 /* Create a new symbol table with the given name */
  50 {
  51     /* Get the length of the name */
  52     unsigned Len = strlen (Name);
  53
  54     /* Allocate memory for the symbol entry */
  55     SymEntry* E = xmalloc (sizeof (SymEntry) + Len);
  56
  57     /* Initialize the entry */
  58     E->NextHash = 0;
  59     E->PrevSym  = 0;
  60     E->NextSym  = 0;
  61     E->Link     = 0;
  62     E->Owner    = 0;
  63     E->Flags    = Flags;
  64     E->Type     = 0;
  65     memcpy (E->Name, Name, Len+1);
  66
  67     /* Return the new entry */
  68     return E;
  69 }
  70
  71
  72
  73 void FreeSymEntry (SymEntry* E)
  74 /* Free a symbol entry */
  75 {
  76     TypeFree (E->Type);
  77     xfree (E);
  78 }
  79
  80
  81
  82 void DumpSymEntry (FILE* F, const SymEntry* E)
  83 /* Dump the given symbol table entry to the file in readable form */
  84 {
  85     static const struct {
  86         const char*         Name;
  87         unsigned            Val;
  88     } Flags [] = {
  89         /* Beware: Order is important! */
  90         { "SC_TYPEDEF",     SC_TYPEDEF  },
  91         { "SC_SFLD",        SC_SFLD     },
  92         { "SC_STRUCT",      SC_STRUCT   },
  93         { "SC_AUTO",        SC_AUTO     },
  94         { "SC_REGISTER",    SC_REGISTER },
  95         { "SC_STATIC",      SC_STATIC   },
  96         { "SC_EXTERN",      SC_EXTERN   },
  97         { "SC_ENUM",        SC_ENUM     },
  98         { "SC_LABEL",       SC_LABEL    },
  99         { "SC_PARAM",       SC_PARAM    },
 100         { "SC_FUNC",        SC_FUNC     },
 101         { "SC_STORAGE",     SC_STORAGE  },
 102         { "SC_DEF",         SC_DEF      },
 103         { "SC_REF",         SC_REF      },
 104         { "SC_ZEROPAGE",    SC_ZEROPAGE },
 105     };
 106
 107     unsigned I;
 108     unsigned SymFlags;
 109
 110     /* Print the name */
 111     fprintf (F, "%s:\n", E->Name);
 112
 113     /* Print the flags */
 114     SymFlags = E->Flags;
 115     fprintf (F, "    Flags: ");
 116     for (I = 0; I < sizeof (Flags) / sizeof (Flags[0]) && SymFlags != 0; ++I) {
 117         if ((SymFlags & Flags[I].Val) == Flags[I].Val) {
 118             SymFlags &= ~Flags[I].Val;
 119             fprintf (F, "%s ", Flags[I].Name);
 120         }
 121     }
 122     if (SymFlags != 0) {
 123         fprintf (F, "%04X", SymFlags);
 124     }
 125     fprintf (F, "\n");
 126
 127     /* Print the type */
 128     fprintf (F, "    Type:  ");
 129     if (E->Type) {
 130         PrintType (F, E->Type);
 131     } else {
 132         fprintf (F, "(none)\n");
 133     }
 134 }
 135
 136
 137
 138 int IsTypeDef (const SymEntry* E)
 139 /* Return true if the given entry is a typedef entry */
 140 {
 141     return ((E->Flags & SC_TYPEDEF) == SC_TYPEDEF);
 142 }
 143
 144
 145
 146 void ChangeSymType (SymEntry* Entry, type* Type)
 147 /* Change the type of the given symbol */
 148 {
 149     TypeFree (Entry->Type);
 150     Entry->Type = TypeDup (Type);
 151 }
 152
 153
 154
 155