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authorUlrich Drepper <drepper@redhat.com>2005-01-22 07:55:35 +0000
committerUlrich Drepper <drepper@redhat.com>2005-01-22 07:55:35 +0000
commitbe184b1d265431c975332eea4047d3a69f7e9f57 (patch)
tree86d70d6b49871e35e619503089b6ecc155024616 /elf/tst-align2.c
parent57b47af94b3c886ca65e32c41a9f665baaf823f0 (diff)
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Update.
2005-01-21 Jakub Jelinek <jakub@redhat.com> * elf/Makefile: Add rules to build and run tst-align2. * elf/tst-align2.c: New test. * elf/tst-alignmod2.c: New file. * sysdeps/powerpc/tst-stack-align.h: New file. * sysdeps/i386/dl-machine.h (RTLD_START): Align stack and clear frame pointer before calling _dl_init. * sysdeps/x86_64/dl-machine.h (RTLD_START): Likewise.
Diffstat (limited to 'elf/tst-align2.c')
-rw-r--r--elf/tst-align2.c157
1 files changed, 157 insertions, 0 deletions
diff --git a/elf/tst-align2.c b/elf/tst-align2.c
new file mode 100644
index 0000000..4fc0330
--- /dev/null
+++ b/elf/tst-align2.c
@@ -0,0 +1,157 @@
+/* Copyright (C) 2005 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jakub@redhat.com>, 2005.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/wait.h>
+#include <tst-stack-align.h>
+#include <unistd.h>
+
+static int res, fds[2], result;
+static bool test_destructors;
+
+extern void in_dso (int *, bool *, int *);
+
+static void __attribute__ ((constructor)) con (void)
+{
+ res = TEST_STACK_ALIGN () ? -1 : 1;
+}
+
+static void __attribute__ ((destructor)) des (void)
+{
+ if (!test_destructors)
+ return;
+
+ char c = TEST_STACK_ALIGN () ? 'B' : 'A';
+ write (fds[1], &c, 1);
+}
+
+static int
+do_test (void)
+{
+ if (!res)
+ {
+ puts ("binary's constructor has not been run");
+ result = 1;
+ }
+ else if (res != 1)
+ {
+ puts ("binary's constructor has been run without sufficient alignment");
+ result = 1;
+ }
+
+ if (TEST_STACK_ALIGN ())
+ {
+ puts ("insufficient stack alignment in do_test");
+ result = 1;
+ }
+
+ in_dso (&result, &test_destructors, &fds[1]);
+
+ if (pipe (fds) < 0)
+ {
+ printf ("couldn't create pipe: %m\n");
+ return 1;
+ }
+
+ pid_t pid = fork ();
+ if (pid < 0)
+ {
+ printf ("fork failed: %m\n");
+ return 1;
+ }
+
+ if (!pid)
+ {
+ close (fds[0]);
+ test_destructors = true;
+ exit (0);
+ }
+
+ close (fds[1]);
+
+ unsigned char c;
+ ssize_t len;
+ int des_seen = 0, dso_des_seen = 0;
+ while ((len = TEMP_FAILURE_RETRY (read (fds[0], &c, 1))) > 0)
+ {
+ switch (c)
+ {
+ case 'B':
+ puts ("insufficient alignment in binary's destructor");
+ result = 1;
+ /* FALLTHROUGH */
+ case 'A':
+ des_seen++;
+ break;
+ case 'D':
+ puts ("insufficient alignment in DSO destructor");
+ result = 1;
+ /* FALLTHROUGH */
+ case 'C':
+ dso_des_seen++;
+ break;
+ default:
+ printf ("unexpected character %x read from pipe", c);
+ result = 1;
+ break;
+ }
+ }
+
+ close (fds[0]);
+
+ if (des_seen != 1)
+ {
+ printf ("binary destructor run %d times instead of once\n", des_seen);
+ result = 1;
+ }
+
+ if (dso_des_seen != 1)
+ {
+ printf ("DSO destructor run %d times instead of once\n", dso_des_seen);
+ result = 1;
+ }
+
+ int status;
+ pid_t termpid;
+ termpid = TEMP_FAILURE_RETRY (waitpid (pid, &status, 0));
+ if (termpid == -1)
+ {
+ printf ("waitpid failed: %m\n");
+ result = 1;
+ }
+ else if (termpid != pid)
+ {
+ printf ("waitpid returned %ld != %ld\n",
+ (long int) termpid, (long int) pid);
+ result = 1;
+ }
+ else if (!WIFEXITED (status) || WEXITSTATUS (status))
+ {
+ puts ("child hasn't exited with exit status 0");
+ result = 1;
+ }
+
+ return result;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"