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aarch64: Add GCS tests for transitive dependencies

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Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
This commit is contained in:
Yury Khrustalev 2025-01-22 15:06:18 +00:00
parent fda5730898
commit 61ba3cdfa9
11 changed files with 195 additions and 16 deletions
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29
sysdeps/unix/sysv/linux/aarch64/Makefile
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@ -13,6 +13,10 @@ gcs-tests-dynamic = \
tst-gcs-optional-off \
tst-gcs-optional-on \
tst-gcs-override \
tst-gcs-shared-disabled \
tst-gcs-shared-enforced-abort \
tst-gcs-shared-optional \
tst-gcs-shared-override \
# gcs-tests-dynamic
gcs-tests-static = \
@ -71,6 +75,31 @@ tst-gcs-optional-static-on-ENV = GLIBC_TUNABLES=glibc.cpu.aarch64_gcs=2
tst-gcs-optional-static-off-ENV = GLIBC_TUNABLES=glibc.cpu.aarch64_gcs=2
tst-gcs-override-static-ENV = GLIBC_TUNABLES=glibc.cpu.aarch64_gcs=3
# force one of the dependencies to be unmarked
LDFLAGS-tst-gcs-mod2.so += -Wl,-z gcs=never
LDFLAGS-tst-gcs-shared-disabled = -Wl,-z gcs=always
LDFLAGS-tst-gcs-shared-enforced-abort = -Wl,-z gcs=always
LDFLAGS-tst-gcs-shared-optional = -Wl,-z gcs=always
LDFLAGS-tst-gcs-shared-override = -Wl,-z gcs=always
modules-names += \
tst-gcs-mod1 \
tst-gcs-mod2 \
tst-gcs-mod3 \
# modules-names
$(objpfx)tst-gcs-shared-disabled: $(objpfx)tst-gcs-mod1.so $(objpfx)tst-gcs-mod3.so
$(objpfx)tst-gcs-shared-enforced-abort: $(objpfx)tst-gcs-mod1.so $(objpfx)tst-gcs-mod3.so
$(objpfx)tst-gcs-shared-optional: $(objpfx)tst-gcs-mod1.so $(objpfx)tst-gcs-mod3.so
$(objpfx)tst-gcs-shared-override: $(objpfx)tst-gcs-mod1.so $(objpfx)tst-gcs-mod3.so
$(objpfx)tst-gcs-mod1.so: $(objpfx)tst-gcs-mod2.so
tst-gcs-shared-disabled-ENV = GLIBC_TUNABLES=glibc.cpu.aarch64_gcs=0
tst-gcs-shared-enforced-abort-ENV = GLIBC_TUNABLES=glibc.cpu.aarch64_gcs=1
tst-gcs-shared-optional-ENV = GLIBC_TUNABLES=glibc.cpu.aarch64_gcs=2
tst-gcs-shared-override-ENV = GLIBC_TUNABLES=glibc.cpu.aarch64_gcs=3
endif # ifeq ($(have-test-cc-gcs),yes)
endif # ifeq ($(subdir),misc)

39
sysdeps/unix/sysv/linux/aarch64/tst-gcs-helper.h Normal file
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@ -0,0 +1,39 @@
/* AArch64 tests for GCS.
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/>. */
#ifndef TST_GCS_HELPER_H
#define TST_GCS_HELPER_H
#include <support/check.h>
#include <support/support.h>
#include <support/test-driver.h>
#include <stdio.h>
#include <sys/auxv.h>
static bool __check_gcs_status (void)
{
register unsigned long x16 asm ("x16");
asm volatile (
"mov x16, #1 /* _CHKFEAT_GCS */\n"
"hint 40 /* CHKFEAT_X16 */\n"
: "=r" (x16));
return x16 ^ 1;
}
#endif // POINTER_GUARD_H

27
sysdeps/unix/sysv/linux/aarch64/tst-gcs-mod1.c Normal file
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@ -0,0 +1,27 @@
/* DSO for testing GCS.
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 <stdio.h>
int fun2 (void); // tst-gcs-mod2.c
int fun1 (void)
{
puts ("called function fun1");
return fun2 ();
}

25
sysdeps/unix/sysv/linux/aarch64/tst-gcs-mod2.c Normal file
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@ -0,0 +1,25 @@
/* DSO for testing GCS.
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 <stdio.h>
int fun2 (void)
{
puts ("called function fun2");
return 0;
}

25
sysdeps/unix/sysv/linux/aarch64/tst-gcs-mod3.c Normal file
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@ -0,0 +1,25 @@
/* DSO for testing GCS.
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 <stdio.h>
int fun3 (void)
{
puts ("called function fun3");
return 0;
}

2
sysdeps/unix/sysv/linux/aarch64/tst-gcs-shared-disabled.c Normal file
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@ -0,0 +1,2 @@
#define TEST_GCS_EXPECT_ENABLED 0
#include "tst-gcs-shared.c"

2
sysdeps/unix/sysv/linux/aarch64/tst-gcs-shared-enforced-abort.c Normal file
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@ -0,0 +1,2 @@
#define TEST_GCS_EXPECT_ENABLED 1
#include "tst-gcs-shared.c"

2
sysdeps/unix/sysv/linux/aarch64/tst-gcs-shared-optional.c Normal file
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@ -0,0 +1,2 @@
#define TEST_GCS_EXPECT_ENABLED 0
#include "tst-gcs-shared.c"

2
sysdeps/unix/sysv/linux/aarch64/tst-gcs-shared-override.c Normal file
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@ -0,0 +1,2 @@
#define TEST_GCS_EXPECT_ENABLED 1
#include "tst-gcs-shared.c"

41
sysdeps/unix/sysv/linux/aarch64/tst-gcs-shared.c Normal file
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@ -0,0 +1,41 @@
/* AArch64 tests for GCS.
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"
int fun1 (void); // tst-gcs-mod1.c
int fun3 (void); // tst-gcs-mod3.c
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;
}
#if TEST_GCS_EXPECT_ENABLED
TEST_VERIFY (__check_gcs_status ());
#else
TEST_VERIFY (!__check_gcs_status ());
#endif
return fun1 () + fun3 ();
}
#include <support/test-driver.c>

17
sysdeps/unix/sysv/linux/aarch64/tst-gcs-skeleton.c
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@ -16,22 +16,7 @@
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <support/check.h>
#include <support/support.h>
#include <support/test-driver.h>
#include <stdio.h>
#include <sys/auxv.h>
static bool __check_gcs_status (void)
{
register unsigned long x16 asm ("x16");
asm volatile (
"mov x16, #1 /* _CHKFEAT_GCS */\n"
"hint 40 /* CHKFEAT_X16 */\n"
: "=r" (x16));
return x16 ^ 1;
}
#include "tst-gcs-helper.h"
static int
do_test (void)