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nptl: Cleanup mutex internal offset tests

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The offsets of pthread_mutex_t __data.__nusers, __data.__spins,
__data.elision, __data.list are not required to be constant over
the releases.  Only the __data.__kind is used for static
initializers.

This patch also adds an additional size check for __data.__kind.

Checked with a build against affected ABIs.

Change-Id: I7a4e48cc91b4c4ada57e9a5d1b151fb702bfaa9f
This commit is contained in:
Adhemerval Zanella 2019-11-07 20:58:41 +00:00
parent 7fc8c286e3
commit 71d260c107
19 changed files with 6 additions and 94 deletions
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3
nptl/pthreadP.h
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@ -617,5 +617,8 @@ check_stacksize_attr (size_t st)
_Static_assert (offsetof (type, member) == offset, \
"offset of " #member " field of " #type " != " \
ASSERT_PTHREAD_STRING (offset))
#define ASSERT_PTHREAD_INTERNAL_MEMBER_SIZE(type, member, mtype) \
_Static_assert (sizeof (((type) { 0 }).member) != 8, \
"sizeof (" #type "." #member ") != sizeof (" #mtype "))")
#endif /* pthreadP.h */

13
nptl/pthread_mutex_init.c
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@ -55,18 +55,11 @@ __pthread_mutex_init (pthread_mutex_t *mutex,
ASSERT_TYPE_SIZE (pthread_mutex_t, __SIZEOF_PTHREAD_MUTEX_T);
ASSERT_PTHREAD_INTERNAL_OFFSET (pthread_mutex_t, __data.__nusers,
__PTHREAD_MUTEX_NUSERS_OFFSET);
/* __kind is the only field where its offset should be checked to
avoid ABI breakage with static initializers. */
ASSERT_PTHREAD_INTERNAL_OFFSET (pthread_mutex_t, __data.__kind,
__PTHREAD_MUTEX_KIND_OFFSET);
ASSERT_PTHREAD_INTERNAL_OFFSET (pthread_mutex_t, __data.__spins,
__PTHREAD_MUTEX_SPINS_OFFSET);
#if __PTHREAD_MUTEX_LOCK_ELISION
ASSERT_PTHREAD_INTERNAL_OFFSET (pthread_mutex_t, __data.__elision,
__PTHREAD_MUTEX_ELISION_OFFSET);
#endif
ASSERT_PTHREAD_INTERNAL_OFFSET (pthread_mutex_t, __data.__list,
__PTHREAD_MUTEX_LIST_OFFSET);
ASSERT_PTHREAD_INTERNAL_MEMBER_SIZE (pthread_mutex_t, __data.__kind, int);
imutexattr = ((const struct pthread_mutexattr *) mutexattr
?: &default_mutexattr);

4
sysdeps/aarch64/nptl/pthread-offsets.h
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@ -1,5 +1 @@
#define __PTHREAD_MUTEX_NUSERS_OFFSET 12
#define __PTHREAD_MUTEX_KIND_OFFSET 16
#define __PTHREAD_MUTEX_SPINS_OFFSET 20
#define __PTHREAD_MUTEX_ELISION_OFFSET 22
#define __PTHREAD_MUTEX_LIST_OFFSET 24

4
sysdeps/alpha/nptl/pthread-offsets.h
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@ -1,5 +1 @@
#define __PTHREAD_MUTEX_NUSERS_OFFSET 12
#define __PTHREAD_MUTEX_KIND_OFFSET 16
#define __PTHREAD_MUTEX_SPINS_OFFSET 20
#define __PTHREAD_MUTEX_ELISION_OFFSET 22
#define __PTHREAD_MUTEX_LIST_OFFSET 24

4
sysdeps/arm/nptl/pthread-offsets.h
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@ -1,5 +1 @@
#define __PTHREAD_MUTEX_NUSERS_OFFSET 16
#define __PTHREAD_MUTEX_KIND_OFFSET 12
#define __PTHREAD_MUTEX_SPINS_OFFSET 20
#define __PTHREAD_MUTEX_ELISION_OFFSET 22
#define __PTHREAD_MUTEX_LIST_OFFSET 20

4
sysdeps/csky/nptl/pthread-offsets.h
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@ -1,5 +1 @@
#define __PTHREAD_MUTEX_NUSERS_OFFSET 16
#define __PTHREAD_MUTEX_KIND_OFFSET 12
#define __PTHREAD_MUTEX_SPINS_OFFSET 20
#define __PTHREAD_MUTEX_ELISION_OFFSET 22
#define __PTHREAD_MUTEX_LIST_OFFSET 20

4
sysdeps/hppa/nptl/pthread-offsets.h
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@ -1,5 +1 @@
#define __PTHREAD_MUTEX_NUSERS_OFFSET 32
#define __PTHREAD_MUTEX_KIND_OFFSET 12
#define __PTHREAD_MUTEX_SPINS_OFFSET 36
#define __PTHREAD_MUTEX_ELISION_OFFSET 22
#define __PTHREAD_MUTEX_LIST_OFFSET 36

4
sysdeps/i386/nptl/pthread-offsets.h
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@ -1,5 +1 @@
#define __PTHREAD_MUTEX_NUSERS_OFFSET 16
#define __PTHREAD_MUTEX_KIND_OFFSET 12
#define __PTHREAD_MUTEX_SPINS_OFFSET 20
#define __PTHREAD_MUTEX_ELISION_OFFSET 22
#define __PTHREAD_MUTEX_LIST_OFFSET 20

4
sysdeps/ia64/nptl/pthread-offsets.h
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@ -1,5 +1 @@
#define __PTHREAD_MUTEX_NUSERS_OFFSET 12
#define __PTHREAD_MUTEX_KIND_OFFSET 16
#define __PTHREAD_MUTEX_SPINS_OFFSET 20
#define __PTHREAD_MUTEX_ELISION_OFFSET 22
#define __PTHREAD_MUTEX_LIST_OFFSET 24

4
sysdeps/m68k/nptl/pthread-offsets.h
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@ -1,5 +1 @@
#define __PTHREAD_MUTEX_NUSERS_OFFSET 16
#define __PTHREAD_MUTEX_KIND_OFFSET 12
#define __PTHREAD_MUTEX_SPINS_OFFSET 20
#define __PTHREAD_MUTEX_ELISION_OFFSET 22
#define __PTHREAD_MUTEX_LIST_OFFSET 20

4
sysdeps/microblaze/nptl/pthread-offsets.h
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@ -1,5 +1 @@
#define __PTHREAD_MUTEX_NUSERS_OFFSET 16
#define __PTHREAD_MUTEX_KIND_OFFSET 12
#define __PTHREAD_MUTEX_SPINS_OFFSET 20
#define __PTHREAD_MUTEX_ELISION_OFFSET 22
#define __PTHREAD_MUTEX_LIST_OFFSET 20

8
sysdeps/mips/nptl/pthread-offsets.h
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@ -1,13 +1,5 @@
#if _MIPS_SIM == _ABI64
# define __PTHREAD_MUTEX_NUSERS_OFFSET 12
# define __PTHREAD_MUTEX_KIND_OFFSET 16
# define __PTHREAD_MUTEX_SPINS_OFFSET 20
# define __PTHREAD_MUTEX_ELISION_OFFSET 22
# define __PTHREAD_MUTEX_LIST_OFFSET 24
#else
# define __PTHREAD_MUTEX_NUSERS_OFFSET 16
# define __PTHREAD_MUTEX_KIND_OFFSET 12
# define __PTHREAD_MUTEX_SPINS_OFFSET 20
# define __PTHREAD_MUTEX_ELISION_OFFSET 22
# define __PTHREAD_MUTEX_LIST_OFFSET 20
#endif

4
sysdeps/nios2/nptl/pthread-offsets.h
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@ -1,5 +1 @@
#define __PTHREAD_MUTEX_NUSERS_OFFSET 16
#define __PTHREAD_MUTEX_KIND_OFFSET 12
#define __PTHREAD_MUTEX_SPINS_OFFSET 20
#define __PTHREAD_MUTEX_ELISION_OFFSET 22
#define __PTHREAD_MUTEX_LIST_OFFSET 20

8
sysdeps/powerpc/nptl/pthread-offsets.h
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@ -1,15 +1,7 @@
#include <bits/wordsize.h>
#if __WORDSIZE == 64
# define __PTHREAD_MUTEX_NUSERS_OFFSET 12
# define __PTHREAD_MUTEX_KIND_OFFSET 16
# define __PTHREAD_MUTEX_SPINS_OFFSET 20
# define __PTHREAD_MUTEX_ELISION_OFFSET 22
# define __PTHREAD_MUTEX_LIST_OFFSET 24
#else
# define __PTHREAD_MUTEX_NUSERS_OFFSET 16
# define __PTHREAD_MUTEX_KIND_OFFSET 12
# define __PTHREAD_MUTEX_SPINS_OFFSET 20
# define __PTHREAD_MUTEX_ELISION_OFFSET 22
# define __PTHREAD_MUTEX_LIST_OFFSET 20
#endif

4
sysdeps/riscv/nptl/pthread-offsets.h
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@ -17,8 +17,4 @@
License along with the GNU C Library. If not, see
<https://www.gnu.org/licenses/>. */
#define __PTHREAD_MUTEX_NUSERS_OFFSET 12
#define __PTHREAD_MUTEX_KIND_OFFSET 16
#define __PTHREAD_MUTEX_SPINS_OFFSET 20
#define __PTHREAD_MUTEX_ELISION_OFFSET 22
#define __PTHREAD_MUTEX_LIST_OFFSET 24

8
sysdeps/s390/nptl/pthread-offsets.h
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@ -1,15 +1,7 @@
#include <bits/wordsize.h>
#if __WORDSIZE == 64
# define __PTHREAD_MUTEX_NUSERS_OFFSET 12
# define __PTHREAD_MUTEX_KIND_OFFSET 16
# define __PTHREAD_MUTEX_SPINS_OFFSET 20
# define __PTHREAD_MUTEX_ELISION_OFFSET 22
# define __PTHREAD_MUTEX_LIST_OFFSET 24
#else
# define __PTHREAD_MUTEX_NUSERS_OFFSET 16
# define __PTHREAD_MUTEX_KIND_OFFSET 12
# define __PTHREAD_MUTEX_SPINS_OFFSET 20
# define __PTHREAD_MUTEX_ELISION_OFFSET 22
# define __PTHREAD_MUTEX_LIST_OFFSET 20
#endif

4
sysdeps/sh/nptl/pthread-offsets.h
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@ -1,5 +1 @@
#define __PTHREAD_MUTEX_NUSERS_OFFSET 16
#define __PTHREAD_MUTEX_KIND_OFFSET 12
#define __PTHREAD_MUTEX_SPINS_OFFSET 20
#define __PTHREAD_MUTEX_ELISION_OFFSET 22
#define __PTHREAD_MUTEX_LIST_OFFSET 20

8
sysdeps/sparc/nptl/pthread-offsets.h
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@ -1,15 +1,7 @@
#include <bits/wordsize.h>
#if __WORDSIZE == 64
# define __PTHREAD_MUTEX_NUSERS_OFFSET 12
# define __PTHREAD_MUTEX_KIND_OFFSET 16
# define __PTHREAD_MUTEX_SPINS_OFFSET 20
# define __PTHREAD_MUTEX_ELISION_OFFSET 22
# define __PTHREAD_MUTEX_LIST_OFFSET 24
#else
# define __PTHREAD_MUTEX_NUSERS_OFFSET 16
# define __PTHREAD_MUTEX_KIND_OFFSET 12
# define __PTHREAD_MUTEX_SPINS_OFFSET 20
# define __PTHREAD_MUTEX_ELISION_OFFSET 22
# define __PTHREAD_MUTEX_LIST_OFFSET 20
#endif

4
sysdeps/x86_64/nptl/pthread-offsets.h
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@ -1,5 +1 @@
#define __PTHREAD_MUTEX_NUSERS_OFFSET 12
#define __PTHREAD_MUTEX_KIND_OFFSET 16
#define __PTHREAD_MUTEX_SPINS_OFFSET 20
#define __PTHREAD_MUTEX_ELISION_OFFSET 22
#define __PTHREAD_MUTEX_LIST_OFFSET 24