mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-15 01:21:06 +00:00
69e2444ab1
The following combinations need to be tested: * 32- (g5, esa and zarch) and 64-bit * linux32 glibc/configure CC='gcc -m31 -march=g5' * linux32 glibc/configure CC='gcc -m31' * linux32 glibc/configure CC='gcc -m31 -mzarch' * With and without VX: * glibc/configure libc_cv_asm_s390_vx=no * With and without profiling (using LD_PROFILE) * With and without pltexit (using LD_AUDIT) ChangeLog: * sysdeps/s390/Makefile: Register the new tests. * sysdeps/s390/tst-dl-runtime-mod.S: New file. * sysdeps/s390/tst-dl-runtime-profile-audit.c: New file. * sysdeps/s390/tst-dl-runtime-profile-noaudit.c: New file. * sysdeps/s390/tst-dl-runtime-resolve-audit.c: New file. * sysdeps/s390/tst-dl-runtime-resolve-noaudit.c: New file. * sysdeps/s390/tst-dl-runtime.c: New file.
92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
/* Test that lazy binding does not clobber r0.
|
|
Copyright (C) 2018 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
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, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <assert.h>
|
|
#include <dlfcn.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
#if defined (__s390x__)
|
|
static const unsigned long magic_value = 0x0011223344556677UL;
|
|
#else
|
|
static const unsigned long magic_value = 0x00112233;
|
|
#endif
|
|
|
|
unsigned long r0x2_trampoline (unsigned long);
|
|
|
|
/* Invoke r0x2, which doubles the value in r0. If we get
|
|
value * 2 back, this means nothing clobbers r0, particularly,
|
|
_dl_runtime_resolve and _dl_runtime_profile. */
|
|
asm (" .type r0x2_trampoline, @function\n"
|
|
"r0x2_trampoline:\n"
|
|
#if defined (__s390x__)
|
|
" lgr %r0,%r2\n"
|
|
" stg %r14,112(%r15)\n"
|
|
" aghi %r15,-160\n"
|
|
" brasl %r14,r0x2@plt\n"
|
|
" aghi %r15,160\n"
|
|
" lg %r14,112(%r15)\n"
|
|
" lgr %r2,%r0\n"
|
|
" br %r14\n"
|
|
#elif defined (__zarch__)
|
|
" lr %r0,%r2\n"
|
|
" st %r14,56(%r15)\n"
|
|
" ahi %r15,-96\n"
|
|
" brasl %r14,r0x2@plt\n"
|
|
" ahi %r15,96\n"
|
|
" l %r14,56(%r15)\n"
|
|
" lr %r2,%r0\n"
|
|
" br %r14\n"
|
|
#else
|
|
" lr %r0,%r2\n"
|
|
" st %r14,56(%r15)\n"
|
|
" ahi %r15,-96\n"
|
|
" balr %r14,0\n"
|
|
" l %r14,1f-.(%r14)\n"
|
|
" basr %r14,%r14\n"
|
|
" ahi %r15,96\n"
|
|
" l %r14,56(%r15)\n"
|
|
" lr %r2,%r0\n"
|
|
" br %r14\n"
|
|
"1: .long r0x2\n"
|
|
#endif
|
|
);
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
int i;
|
|
unsigned long r0;
|
|
const char *run;
|
|
|
|
for (i = 0; i < 2; i++)
|
|
{
|
|
run = (i == 0) ? "lazy" : "non-lazy";
|
|
r0 = magic_value;
|
|
printf ("-> %s r0 = 0x%lx\n", run, r0);
|
|
r0 = r0x2_trampoline (r0);
|
|
printf ("<- %s r0 * 2 = 0x%lx\n", run, r0);
|
|
if (r0 != magic_value * 2)
|
|
return EXIT_FAILURE;
|
|
}
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|