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aarch64: Add GCS tests for dlopen

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Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
This commit is contained in:
Yury Khrustalev 2025-01-22 17:21:26 +00:00
parent 57ee1deb1f
commit 15afd01e80
8 changed files with 101 additions and 1 deletions
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2
Makeconfig
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@ -633,7 +633,7 @@ link-libc-printers-tests = $(link-libc-rpath) \
$(link-libc-tests-after-rpath-link)
# This is how to find at build-time things that will be installed there.
rpath-dirs = math elf dlfcn nss nis rt resolv mathvec support
rpath-dirs = math elf dlfcn nss nis rt resolv mathvec support misc
rpath-link = \
$(common-objdir):$(subst $(empty) ,:,$(patsubst ../$(subdir),.,$(rpath-dirs:%=$(common-objpfx)%)))
else # build-static

23
sysdeps/unix/sysv/linux/aarch64/Makefile
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@ -8,6 +8,11 @@ ifneq (no,$(findstring no,$(have-cc-gcs) $(have-test-cc-gcs) $(have-ld-gcs)))
gcs-tests-dynamic = \
tst-gcs-disabled \
tst-gcs-dlopen-disabled \
tst-gcs-dlopen-enforced \
tst-gcs-dlopen-optional-off \
tst-gcs-dlopen-optional-on \
tst-gcs-dlopen-override \
tst-gcs-enforced \
tst-gcs-enforced-abort \
tst-gcs-optional-off \
@ -100,6 +105,24 @@ tst-gcs-shared-enforced-abort-ENV = GLIBC_TUNABLES=glibc.cpu.aarch64_gcs=1
tst-gcs-shared-optional-ENV = GLIBC_TUNABLES=glibc.cpu.aarch64_gcs=2
tst-gcs-shared-override-ENV = GLIBC_TUNABLES=glibc.cpu.aarch64_gcs=3
LDFLAGS-tst-gcs-dlopen-disabled = -Wl,-z gcs=always
LDFLAGS-tst-gcs-dlopen-enforced = -Wl,-z gcs=always
LDFLAGS-tst-gcs-dlopen-optional-on = -Wl,-z gcs=always
LDFLAGS-tst-gcs-dlopen-optional-off = -Wl,-z gcs=never
LDFLAGS-tst-gcs-dlopen-override = -Wl,-z gcs=always
tst-gcs-dlopen-disabled-ENV = GLIBC_TUNABLES=glibc.cpu.aarch64_gcs=0
tst-gcs-dlopen-enforced-ENV = GLIBC_TUNABLES=glibc.cpu.aarch64_gcs=1
tst-gcs-dlopen-optional-on-ENV = GLIBC_TUNABLES=glibc.cpu.aarch64_gcs=2
tst-gcs-dlopen-optional-off-ENV = GLIBC_TUNABLES=glibc.cpu.aarch64_gcs=2
tst-gcs-dlopen-override-ENV = GLIBC_TUNABLES=glibc.cpu.aarch64_gcs=3
$(objpfx)tst-gcs-dlopen-disabled.out: $(objpfx)tst-gcs-mod2.so
$(objpfx)tst-gcs-dlopen-enforced.out: $(objpfx)tst-gcs-mod2.so
$(objpfx)tst-gcs-dlopen-optional-on.out: $(objpfx)tst-gcs-mod2.so
$(objpfx)tst-gcs-dlopen-optional-off.out: $(objpfx)tst-gcs-mod2.so
$(objpfx)tst-gcs-dlopen-override.out: $(objpfx)tst-gcs-mod2.so
endif # ifeq ($(have-test-cc-gcs),yes)
endif # ifeq ($(subdir),misc)

3
sysdeps/unix/sysv/linux/aarch64/tst-gcs-dlopen-disabled.c Normal file
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@ -0,0 +1,3 @@
#define TEST_GCS_EXPECT_ENABLED 0
#define TEST_GCS_EXPECT_DLOPEN 1
#include "tst-gcs-dlopen.c"

3
sysdeps/unix/sysv/linux/aarch64/tst-gcs-dlopen-enforced.c Normal file
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@ -0,0 +1,3 @@
#define TEST_GCS_EXPECT_ENABLED 1
#define TEST_GCS_EXPECT_DLOPEN 0
#include "tst-gcs-dlopen.c"

3
sysdeps/unix/sysv/linux/aarch64/tst-gcs-dlopen-optional-off.c Normal file
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@ -0,0 +1,3 @@
#define TEST_GCS_EXPECT_ENABLED 0
#define TEST_GCS_EXPECT_DLOPEN 1
#include "tst-gcs-dlopen.c"

3
sysdeps/unix/sysv/linux/aarch64/tst-gcs-dlopen-optional-on.c Normal file
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@ -0,0 +1,3 @@
#define TEST_GCS_EXPECT_ENABLED 1
#define TEST_GCS_EXPECT_DLOPEN 0
#include "tst-gcs-dlopen.c"

3
sysdeps/unix/sysv/linux/aarch64/tst-gcs-dlopen-override.c Normal file
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@ -0,0 +1,3 @@
#define TEST_GCS_EXPECT_ENABLED 1
#define TEST_GCS_EXPECT_DLOPEN 1
#include "tst-gcs-dlopen.c"

62
sysdeps/unix/sysv/linux/aarch64/tst-gcs-dlopen.c Normal file
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@ -0,0 +1,62 @@
/* AArch64 tests for GCS for dlopen use case.
Copyright (C) 2025 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
<https://www.gnu.org/licenses/>. */
#include "tst-gcs-helper.h"
#include <dlfcn.h>
#include <string.h>
static int
do_test (void)
{
/* Check if GCS could possible by enabled. */
if (!(getauxval (AT_HWCAP) & HWCAP_GCS))
{
puts ("kernel or CPU does not support GCS");
return EXIT_UNSUPPORTED;
}
/* The tst-gcs-mod2.so test library does not have GCS marking. */
void *h = dlopen ("tst-gcs-mod2.so", RTLD_NOW);
const char *err = dlerror ();
#if TEST_GCS_EXPECT_DLOPEN
TEST_VERIFY (h != NULL);
#else
TEST_VERIFY (h == NULL);
/* Only accept expected GCS-related errors. */
TEST_VERIFY (strstr (err, "not GCS compatible") != NULL);
#endif
#if TEST_GCS_EXPECT_ENABLED
TEST_VERIFY (__check_gcs_status ());
#else
TEST_VERIFY (!__check_gcs_status ());
#endif
if (h == NULL)
printf ("dlopen error: %s\n", err);
else
{
puts ("library loaded normally");
dlclose (h);
}
return 0;
}
#include <support/test-driver.c>