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linux-atomic.c (ABORT_INSTRUCTION): Use __builtin_trap() instead.

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* config/pa/linux-atomic.c (ABORT_INSTRUCTION): Use __builtin_trap()
	instead.

From-SVN: r218033
This commit is contained in:
John David Anglin 2014-11-24 23:39:47 +00:00
parent 67c4c16420
commit 17f6e9a357
2 changed files with 7 additions and 5 deletions
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5
libgcc/ChangeLog
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@ -1,3 +1,8 @@
2014-11-24 John David Anglin <danglin@gcc.gnu.org>
* config/pa/linux-atomic.c (ABORT_INSTRUCTION): Use __builtin_trap()
instead.
2014-11-21 Guy Martin <gmsoft@tuxicoman.be>
John David Anglin <danglin@gcc.gnu.org>

7
libgcc/config/pa/linux-atomic.c
View File

@ -41,9 +41,6 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
using the kernel helper defined below. There is no support for
64-bit operations yet. */
/* A privileged instruction to crash a userspace program with SIGILL. */
#define ABORT_INSTRUCTION asm ("iitlbp %r0,(%sr0, %r0)")
/* Determine kernel LWS function call (0=32-bit, 1=64-bit userspace). */
#define LWS_CAS (sizeof(long) == 4 ? 0 : 1)
@ -64,7 +61,7 @@ __kernel_cmpxchg (int oldval, int newval, int *mem)
: "r1", "r20", "r22", "r23", "r29", "r31", "memory"
);
if (__builtin_expect (lws_errno == -EFAULT || lws_errno == -ENOSYS, 0))
ABORT_INSTRUCTION;
__builtin_trap ();
/* If the kernel LWS call succeeded (lws_errno == 0), lws_ret contains
the old value from memory. If this value is equal to OLDVAL, the
@ -91,7 +88,7 @@ __kernel_cmpxchg2 (void * oldval, void * newval, void *mem, int val_size)
: "r1", "r20", "r22", "r29", "r31", "fr4", "memory"
);
if (__builtin_expect (lws_errno == -EFAULT || lws_errno == -ENOSYS, 0))
ABORT_INSTRUCTION;
__builtin_trap ();
/* If the kernel LWS call fails, retrun EBUSY */
if (!lws_errno && lws_ret)