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/* remove.c -- remove an explicitly defined symbol. */
/* This file is part of DLD, a dynamic link/unlink editor for C.
Copyright (C) 1990 by W. Wilson Ho.
The author can be reached electronically by how@cs.ucdavis.edu or
through physical mail at:
W. Wilson Ho
Division of Computer Science
University of California at Davis
Davis, CA 95616
*/
/* This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 1, or (at your option) any
later version. */
#include "defs.h"
/*
* remove a previously defined symbol defined by dld_define().
* If symbol is not defined by dld_fine, this function becomes no-op.
*/
void
dld_remove_defined_symbol (name)
const char *name;
{
register symbol *sp;
register char *p;
if (name == 0)
return;
p = (char *) _dld_malloc (strlen(name) +2);
*p = '_';
strcpy (p+1, name);
sp = _dld_getsym_soft (p);
free (p);
if (sp->defined_by && sp->defined_by == _dld_dummy_entry) {
register struct file_chain *p = sp->referenced_by;
register struct file_chain *prev = 0;
while (p)
if (p->entry->ref_count == 0) {
del_link_list_elt (sp->referenced_by, prev, p, next);
} else {
p->entry->undefined_symbol_count++;
prev = p;
p = p->next;
}
if (sp->referenced_by) {
dld_undefined_sym_count++;
sp->value = 0;
}
#ifndef linux
if (sp->defined == (N_COMM | N_EXT) && sp->value) {
#else
if (sp->defined == (N_TYPE | N_EXT) && sp->value) {
#endif
free ((void *)sp->value);
sp->value = 0;
}
sp->defined = 0;
sp->defined_by = 0;
if (sp->referenced_by) {
_dld_patch_all_files (_dld_latest_entry);
_dld_exec_flags_valid = 0;
}
}
} /* dld_remove_defined_symbol */
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