symtab.c
资源名称:nasm-0.98.zip [点击查看]
上传用户:yuppie_zhu
上传日期:2007-01-08
资源大小:535k
文件大小:2k
源码类别:
编译器/解释器
开发平台:
C/C++
- /* 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 memoryn");
- 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 memoryn");
- 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;
- }
- }