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/* Test program for eu_search_lines.
Copyright (C) 2023 Red Hat, Inc.
This file is part of elfutils.
This file 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 3 of the License, or
(at your option) any later version.
elfutils is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see<http://www.gnu.org/licenses/>. */
#include <config.h>
#include <fcntl.h>
#include <inttypes.h>
#include <libelf.h>
#include ELFUTILS_HEADER(dw)
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <pthread.h>
static Dwarf *dbg;
static void *thread_work (void *arg)
{
int *res = (int *) arg;
*res = 0;
Dwarf_Off cuoff = 0;
Dwarf_Off old_cuoff = 0;
size_t hsize;
Dwarf_Off ao;
uint8_t asz;
uint8_t osz;
while (dwarf_nextcu (dbg, cuoff, &cuoff, &hsize, &ao, &asz, &osz) == 0)
{
printf ("cuhl = %zu, o = %llu, asz = %hhu, osz = %hhu, ncu = %llu\n",
hsize, (unsigned long long int) ao,
asz, osz, (unsigned long long int) cuoff);
// Get the DIE for the CU.
Dwarf_Die die;
if (dwarf_offdie (dbg, old_cuoff + hsize, &die) == NULL)
{
printf ("cannot get CU die\n");
*res = 1;
break;
}
old_cuoff = cuoff;
Dwarf_Lines *lb;
size_t nlb;
if (dwarf_getsrclines (&die, &lb, &nlb) != 0)
{
printf ("cannot get lines\n");
*res = 1;
break;
}
printf (" %zu lines\n", nlb);
for (size_t i = 0; i < nlb; ++i)
{
Dwarf_Line *l = dwarf_onesrcline (lb, i);
if (l == NULL)
{
printf ("cannot get individual line\n");
*res = 1;
break;
}
Dwarf_Addr addr;
if (dwarf_lineaddr (l, &addr) != 0)
addr = 0;
const char *file = dwarf_linesrc (l, NULL, NULL);
int line;
if (dwarf_lineno (l, &line) != 0)
line = 0;
printf ("%" PRIx64 ": %s:%d:", (uint64_t) addr, file ? : "???", line);
// Getting the file path through the Dwarf_Files should
// result in the same path.
Dwarf_Files *files;
size_t idx;
if (dwarf_line_file (l, &files, &idx) != 0)
{
printf ("cannot get file from line (%zd): %s\n",
i, dwarf_errmsg (-1));
*res = 1;
break;
}
const char *path = dwarf_filesrc (files, idx, NULL, NULL);
if ((path == NULL && file != NULL) ||
(path != NULL && file == NULL) ||
(strcmp (file, path) != 0))
{
printf ("line %zd srcline (%s) != file srcline (%s)\n",
i, file ? : "???", path ? : "???");
*res = 1;
break;
}
int column;
if (dwarf_linecol (l, &column) != 0)
column = 0;
if (column >= 0)
printf ("%d:", column);
bool is_stmt;
if (dwarf_linebeginstatement (l, &is_stmt) != 0)
is_stmt = false;
bool end_sequence;
if (dwarf_lineendsequence (l, &end_sequence) != 0)
end_sequence = false;
bool basic_block;
if (dwarf_lineblock (l, &basic_block) != 0)
basic_block = false;
bool prologue_end;
if (dwarf_lineprologueend (l, &prologue_end) != 0)
prologue_end = false;
bool epilogue_begin;
if (dwarf_lineepiloguebegin (l, &epilogue_begin) != 0)
epilogue_begin = false;
printf (" is_stmt:%s, end_seq:%s, bb:%s, prologue:%s, epilogue:%s\n",
is_stmt ? "yes" : "no", end_sequence ? "yes" : "no",
basic_block ? "yes" : "no", prologue_end ? "yes" : "no",
epilogue_begin ? "yes" : "no");
}
}
return NULL;
}
int main (int argc, char *argv[])
{
if (argc != 2)
{
printf ("Usage: %s <filename>\n", argv[0]);
return 1;
}
char *name = argv[1];
int fd = open (name, O_RDONLY);
if (fd < 0)
{
printf ("%s not usable: %s\n", name, dwarf_errmsg (-1));
return 1;
}
dbg = dwarf_begin (fd, DWARF_C_READ);
if (dbg == NULL)
{
printf ("%s not usable: %s\n", name, dwarf_errmsg (-1));
close (fd);
return 1;
}
printf ("checking %s\n", name);
int num_threads = 4;
pthread_t threads[num_threads];
int thread_results[num_threads];
for (int i = 0; i < num_threads; ++i)
{
if (pthread_create (&threads[i], NULL, thread_work,
&thread_results[i]) != 0)
{
perror ("Failed to create thread");
for (int j = 0; j < i; j++)
pthread_cancel (threads[j]);
dwarf_end (dbg);
close (fd);
return 1;
}
}
int res = 0;
for (int i = 0; i < num_threads; ++i)
{
if (pthread_join (threads[i], NULL) != 0)
{
perror ("Failed to join thread");
res = 1;
break;
}
res |= thread_results[i];
}
dwarf_end (dbg);
close (fd);
return res;
}
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