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nptl: Add tests for internal pthread_mutex_t offsets

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This patch adds a new build test to check for internal fields
offsets for user visible internal field.  Although currently
the only field which is statically initialized to a non zero value
is pthread_mutex_t.__data.__kind value, the tests also check the
offset of __kind, __spins, __elision (if supported), and __list
internal member.  A internal header (pthread-offset.h) is added
to each major ABI with the reference value.

Checked on x86_64-linux-gnu and with a build check for all affected
ABIs (aarch64-linux-gnu, alpha-linux-gnu, arm-linux-gnueabihf,
hppa-linux-gnu, i686-linux-gnu, ia64-linux-gnu, m68k-linux-gnu,
microblaze-linux-gnu, mips64-linux-gnu, mips64-n32-linux-gnu,
mips-linux-gnu, powerpc64le-linux-gnu, powerpc-linux-gnu,
s390-linux-gnu, s390x-linux-gnu, sh4-linux-gnu, sparc64-linux-gnu,
sparcv9-linux-gnu, tilegx-linux-gnu, tilegx-linux-gnu-x32,
tilepro-linux-gnu, x86_64-linux-gnu, and x86_64-linux-x32).

	* nptl/pthreadP.h (ASSERT_PTHREAD_STRING,
	ASSERT_PTHREAD_INTERNAL_OFFSET): New macro.
	* nptl/pthread_mutex_init.c (__pthread_mutex_init): Add build time
	checks for internal pthread_mutex_t offsets.
	* sysdeps/aarch64/nptl/pthread-offsets.h
	(__PTHREAD_MUTEX_NUSERS_OFFSET, __PTHREAD_MUTEX_KIND_OFFSET,
	__PTHREAD_MUTEX_SPINS_OFFSET, __PTHREAD_MUTEX_ELISION_OFFSET,
	__PTHREAD_MUTEX_LIST_OFFSET): New macro.
	* sysdeps/alpha/nptl/pthread-offsets.h: Likewise.
	* sysdeps/arm/nptl/pthread-offsets.h: Likewise.
	* sysdeps/hppa/nptl/pthread-offsets.h: Likewise.
	* sysdeps/i386/nptl/pthread-offsets.h: Likewise.
	* sysdeps/ia64/nptl/pthread-offsets.h: Likewise.
	* sysdeps/m68k/nptl/pthread-offsets.h: Likewise.
	* sysdeps/microblaze/nptl/pthread-offsets.h: Likewise.
	* sysdeps/mips/nptl/pthread-offsets.h: Likewise.
	* sysdeps/nios2/nptl/pthread-offsets.h: Likewise.
	* sysdeps/powerpc/nptl/pthread-offsets.h: Likewise.
	* sysdeps/s390/nptl/pthread-offsets.h: Likewise.
	* sysdeps/sh/nptl/pthread-offsets.h: Likewise.
	* sysdeps/sparc/nptl/pthread-offsets.h: Likewise.
	* sysdeps/tile/nptl/pthread-offsets.h: Likewise.
	* sysdeps/x86_64/nptl/pthread-offsets.h: Likewise.

Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
This commit is contained in:
Adhemerval Zanella
2017-10-16 14:27:29 -02:00
parent b7fc95f8c8
commit dff91cd45e
19 changed files with 173 additions and 0 deletions
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13
nptl/pthread_mutex_init.c
View File

@ -23,6 +23,7 @@
#include <kernel-features.h>
#include "pthreadP.h"
#include <atomic.h>
#include <pthread-offsets.h>
#include <stap-probe.h>
@ -58,6 +59,18 @@ __pthread_mutex_init (pthread_mutex_t *mutex,
const struct pthread_mutexattr *imutexattr;
assert (sizeof (pthread_mutex_t) <= __SIZEOF_PTHREAD_MUTEX_T);
ASSERT_PTHREAD_INTERNAL_OFFSET (pthread_mutex_t, __data.__nusers,
__PTHREAD_MUTEX_NUSERS_OFFSET);
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);
imutexattr = ((const struct pthread_mutexattr *) mutexattr
?: &default_mutexattr);