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S390: Test that lazy binding does not clobber R0

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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.
This commit is contained in:
Ilya Leoshkevich 2018-08-10 09:07:43 +02:00 committed by Stefan Liebler
parent bde6320f39
commit 69e2444ab1
8 changed files with 230 additions and 0 deletions
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10
ChangeLog
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@ -1,3 +1,13 @@
2018-08-10 Ilya Leoshkevich <iii@linux.ibm.com>
* 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.
2018-08-10 Ilya Leoshkevich <iii@linux.ibm.com>
* sysdeps/s390/s390-64/dl-trampoline.h (_dl_runtime_profile):

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sysdeps/s390/Makefile
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@ -29,3 +29,26 @@ $(inst_gconvdir)/%.so: $(objpfx)%.so $(+force)
sysdeps-gconv-modules = ../sysdeps/s390/gconv-modules
endif
ifeq ($(subdir),elf)
ifeq ($(build-shared),yes)
tests += tst-dl-runtime-resolve-noaudit tst-dl-runtime-resolve-audit \
tst-dl-runtime-profile-noaudit
# FIXME: When both LD_PROFILE and LD_AUDIT are set, a segfault occurs.
#tests += tst-dl-runtime-profile-audit
modules-names += tst-dl-runtime-mod
$(objpfx)tst-dl-runtime-resolve-noaudit: $(objpfx)tst-dl-runtime-mod.so
$(objpfx)tst-dl-runtime-resolve-audit: $(objpfx)tst-dl-runtime-mod.so
$(objpfx)tst-dl-runtime-profile-noaudit: $(objpfx)tst-dl-runtime-mod.so
$(objpfx)tst-dl-runtime-profile-audit: $(objpfx)tst-dl-runtime-mod.so
$(objpfx)tst-dl-runtime-resolve-audit.out: $(objpfx)tst-auditmod1.so
$(objpfx)tst-dl-runtime-profile-audit.out: $(objpfx)tst-auditmod1.so
# The profiling output goes to $LD_PROFILE_OUTPUT/$LD_PROFILE.profile
env-profile = LD_PROFILE=$(objpfx)tst-dl-runtime-mod.so \
LD_PROFILE_OUTPUT=/
env-audit = LD_AUDIT=$(objpfx)tst-auditmod1.so
tst-dl-runtime-resolve-audit-ENV = $(env-audit)
tst-dl-runtime-profile-noaudit-ENV = $(env-profile)
tst-dl-runtime-profile-audit-ENV = $(env-profile) $(env-audit)
endif
endif

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sysdeps/s390/tst-dl-runtime-mod.S Normal file
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@ -0,0 +1,30 @@
/* Shared library for the lazy binding tests.
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/>. */
.globl r0x2
.type r0x2, @function
r0x2:
.cfi_startproc
#if defined (__s390x__)
agr %r0,%r0
#else
ar %r0,%r0
#endif
br %r14
.cfi_endproc
.size r0x2, .-r0x2

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sysdeps/s390/tst-dl-runtime-profile-audit.c Normal file
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@ -0,0 +1,19 @@
/* Lazy binding test with profiling and auditing.
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 "tst-dl-runtime.c"

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sysdeps/s390/tst-dl-runtime-profile-noaudit.c Normal file
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/* Lazy binding test with profiling.
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 "tst-dl-runtime.c"

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sysdeps/s390/tst-dl-runtime-resolve-audit.c Normal file
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@ -0,0 +1,19 @@
/* Lazy binding test with auditing.
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 "tst-dl-runtime.c"

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sysdeps/s390/tst-dl-runtime-resolve-noaudit.c Normal file
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/* Lazy binding test.
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 "tst-dl-runtime.c"

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sysdeps/s390/tst-dl-runtime.c Normal file
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/* 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>