git
/
gcc
mirror of git://gcc.gnu.org/git/gcc.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

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

* 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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
libgcc/ChangeLog
View File

@ -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> 2014-11-21 Guy Martin <gmsoft@tuxicoman.be>
John David Anglin <danglin@gcc.gnu.org> 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 using the kernel helper defined below. There is no support for
64-bit operations yet. */ 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). */ /* Determine kernel LWS function call (0=32-bit, 1=64-bit userspace). */
#define LWS_CAS (sizeof(long) == 4 ? 0 : 1) #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" : "r1", "r20", "r22", "r23", "r29", "r31", "memory"
); );
if (__builtin_expect (lws_errno == -EFAULT || lws_errno == -ENOSYS, 0)) 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 /* 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 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" : "r1", "r20", "r22", "r29", "r31", "fr4", "memory"
); );
if (__builtin_expect (lws_errno == -EFAULT || lws_errno == -ENOSYS, 0)) if (__builtin_expect (lws_errno == -EFAULT || lws_errno == -ENOSYS, 0))
ABORT_INSTRUCTION; __builtin_trap ();
/* If the kernel LWS call fails, retrun EBUSY */ /* If the kernel LWS call fails, retrun EBUSY */
if (!lws_errno && lws_ret) if (!lws_errno && lws_ret)