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/* symtab.c Routines to maintain and manipulate a symbol table
*
* The Netwide Assembler is copyright (C) 1996 Simon Tatham and
* Julian Hall. All rights reserved. The software is
* redistributable under the licence given in the file "Licence"
* distributed in the NASM archive.
*/
#include <stdio.h>
#include <stdlib.h>
#include "symtab.h"
/* TODO: Implement a hash table, not this stupid implementation which
is too slow to be of practical use */
/* Private data types */
typedef struct tagSymtab {
symtabEnt ent;
struct tagSymtab * next;
} symtabList;
typedef symtabList * _symtab;
void *symtabNew(void)
{
void *p = malloc(sizeof(_symtab));
if (p == NULL) {
fprintf(stderr,"symtab: out of memory\n");
exit(3);
}
*(_symtab *)p = NULL;
return p;
}
void symtabDone(void *symtab)
{
/* DO SOMETHING HERE! */
}
void symtabInsert(void *symtab,symtabEnt *ent)
{
symtabList *l = malloc(sizeof(symtabList));
if (l == NULL) {
fprintf(stderr,"symtab: out of memory\n");
exit(3);
}
l->ent = *ent;
l->next = *(_symtab *)symtab;
*(_symtab *)symtab = l;
}
symtabEnt *symtabFind(void *symtab,char *name)
{
symtabList *l = *(_symtab *)symtab;
while (l) {
if (!strcmp(l->ent.name,name)) {
return &(l->ent);
}
l = l->next;
}
return NULL;
}
void symtabDump(void *symtab,FILE *of)
{
symtabList *l = *(_symtab *)symtab;
while(l) {
fprintf(of,"%32s %s:%08lx (%ld)\n",l->ent.name,
l->ent.segment ? "data" : "code" ,
l->ent.offset, l->ent.flags);
l = l->next;
}
}
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