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/*
Copyright (C) 2006 Mandriva Conectiva S.A.
Copyright (C) 2006 Arnaldo Carvalho de Melo <acme@mandriva.com>
This program is free software; you can redistribute it and/or modify it
under the terms of version 2 of the GNU General Public License as
published by the Free Software Foundation.
*/
#include <assert.h>
#include <dwarf.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "dwarves.h"
#include "dutil.h"
static void refcnt_tag(struct tag *tag, const struct cu *cu);
static void refcnt_member(struct class_member *member, const struct cu *cu)
{
if (member->visited)
return;
member->visited = 1;
if (member->tag.type != 0) { /* if not void */
struct tag *type = cu__type(cu, member->tag.type);
if (type != NULL)
refcnt_tag(type, cu);
}
}
static void refcnt_parameter(const struct parameter *parameter,
const struct cu *cu)
{
if (parameter->tag.type != 0) { /* if not void */
struct tag *type = cu__type(cu, parameter->tag.type);
if (type != NULL)
refcnt_tag(type, cu);
}
}
static void refcnt_variable(const struct variable *variable,
const struct cu *cu)
{
if (variable->ip.tag.type != 0) { /* if not void */
struct tag *type = cu__type(cu, variable->ip.tag.type);
if (type != NULL)
refcnt_tag(type, cu);
}
}
static void refcnt_inline_expansion(const struct inline_expansion *exp,
const struct cu *cu)
{
if (exp->ip.tag.type != 0) { /* if not void */
struct tag *type = cu__function(cu, exp->ip.tag.type);
if (type != NULL)
refcnt_tag(type, cu);
}
}
static void refcnt_tag(struct tag *tag, const struct cu *cu)
{
struct class_member *member;
tag->visited = 1;
if (tag__is_struct(tag) || tag__is_union(tag))
type__for_each_member(tag__type(tag), member)
refcnt_member(member, cu);
}
static void refcnt_lexblock(const struct lexblock *lexblock, const struct cu *cu)
{
struct tag *pos;
list_for_each_entry(pos, &lexblock->tags, node)
switch (pos->tag) {
case DW_TAG_variable:
refcnt_variable(tag__variable(pos), cu);
break;
case DW_TAG_inlined_subroutine:
refcnt_inline_expansion(tag__inline_expansion(pos), cu);
break;
case DW_TAG_lexical_block:
refcnt_lexblock(tag__lexblock(pos), cu);
break;
}
}
static void refcnt_function(struct function *function, const struct cu *cu)
{
struct parameter *parameter;
function->proto.tag.visited = 1;
if (function->proto.tag.type != 0) /* if not void */ {
struct tag *type = cu__type(cu, function->proto.tag.type);
if (type != NULL)
refcnt_tag(type, cu);
}
list_for_each_entry(parameter, &function->proto.parms, tag.node)
refcnt_parameter(parameter, cu);
refcnt_lexblock(&function->lexblock, cu);
}
static int cu_refcnt_iterator(struct cu *cu, void *cookie __unused)
{
struct function *pos;
uint32_t id;
cu__for_each_function(cu, id, pos)
refcnt_function(pos, cu);
return 0;
}
static int lost_iterator(struct tag *tag, struct cu *cu,
void *cookie __unused)
{
if (!tag->visited && tag__decl_file(tag, cu)) {
tag__fprintf(tag, cu, NULL, stdout);
puts(";\n");
}
return 0;
}
static int cu_lost_iterator(struct cu *cu, void *cookie)
{
return cu__for_all_tags(cu, lost_iterator, cookie);
}
int main(int argc __unused, char *argv[])
{
int err;
struct cus *cus = cus__new();
if (dwarves__init(0) || cus == NULL) {
fputs("prefcnt: insufficient memory\n", stderr);
return EXIT_FAILURE;
}
err = cus__load_files(cus, NULL, argv + 1);
if (err != 0) {
cus__fprintf_load_files_err(cus, "prefcnt", argv + 1, err, stderr);
return EXIT_FAILURE;
}
cus__for_each_cu(cus, cu_refcnt_iterator, NULL, NULL);
cus__for_each_cu(cus, cu_lost_iterator, NULL, NULL);
return EXIT_SUCCESS;
}
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