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