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authorUlrich Drepper <drepper@redhat.com>2007-07-28 20:16:07 +0000
committerUlrich Drepper <drepper@redhat.com>2007-07-28 20:16:07 +0000
commit085a44122074e67d56dca0c4f88f01d450ae82ad (patch)
tree51042f8853e47a41e4bb5f220587e7a70b8ca406 /nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h
parentae1ad762f0687afb37761085cb6e83305afe4521 (diff)
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* iconvdata/gbk.c (BODY): Make buf and cp char instead of unsigned
	char array resp. pointer.
	* iconvdata/iso-2022-kr.c (BODY): Make buf unsigned char instead of
	char array.
	* iconvdata/cns11643.h (cns11643_to_ucs4): Change first argument
	to const unsigned char **.
	(ucs4_to_cns11643): Change second argument to unsigned char *.
	* iconvdata/euc-tw.c (BODY): Change endp type to
	const unsigned char *.
	* iconvdata/iso-ir-165.h (ucs4_to_isoir165): Change second argument
	to unsigned char *.
	* iconvdata/ibm1008_420.c (LOOP_NEED_FLAGS): Don't define.
	* iconvdata/iso-2022-cn.c (BODY): Change buf to unsigned char array.
	* iconvdata/iso-2022-cn-ext.c (BODY): Change buf, tmpbuf, tmp
	types to unsigned char pointers/arrays instead of char.
	* iconvdata/jis0201.h (ucs4_to_jisx0201): Change second argument
	to unsigned char *.
	* iconvdata/jis0208.h (ucs4_to_jisx0208): Likewise.
	* iconvdata/jis0212.h: Include assert.h.
	(ucs4_to_jisx0212): Change second argument to unsigned char *.
	assert that if cp[0] is not '\0', cp[1] is not '\0' either instead
	of trying to handle that.
	* iconvdata/euc-kr.c (euckr_from_ucs4): Initialize also cp[1] to
	shut up a warning.
	* iconvdata/euc-jp-ms.c (from_ucs4_lat1, from_ucs4_greek,
	from_ucs4_cjk, from_ucs4_cjkcpt, from_ucs4_extra): Change type to
	two dimensional const unsigned char arrays.
	(BODY): Cast "" to (const unsigned char *) for assignment to cp.
	Initialize endp to inptr to shut up a warning.
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h')
-rw-r--r--nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h70
1 files changed, 45 insertions, 25 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h
index d915facba1..4758b63bd0 100644
--- a/nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h
+++ b/nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h
@@ -35,31 +35,50 @@
 #define FUTEX_LOCK_PI		6
 #define FUTEX_UNLOCK_PI		7
 #define FUTEX_TRYLOCK_PI	8
+#define FUTEX_PRIVATE_FLAG	128
+
+/* Values for 'private' parameter of locking macros.  Yes, the
+   definition seems to be backwards.  But it is not.  The bit will be
+   reversed before passing to the system call.  */
+#define LLL_PRIVATE	0
+#define LLL_SHARED	FUTEX_PRIVATE_FLAG
+
+
+#if !defined NOT_IN_libc || defined IS_IN_rtld
+/* In libc.so or ld.so all futexes are private.  */
+# ifdef __ASSUME_PRIVATE_FUTEX
+#  define __lll_private_flag(fl, private) \
+  ((fl) | FUTEX_PRIVATE_FLAG)
+# else
+#  define __lll_private_flag(fl, private) \
+  ((fl) | THREAD_GETMEM (THREAD_SELF, header.private_futex))
+# endif
+#else
+# ifdef __ASSUME_PRIVATE_FUTEX
+#  define __lll_private_flag(fl, private) \
+  (((fl) | FUTEX_PRIVATE_FLAG) ^ (private))
+# else
+#  define __lll_private_flag(fl, private) \
+  (__builtin_constant_p (private)					      \
+   ? ((private) == 0							      \
+      ? ((fl) | THREAD_GETMEM (THREAD_SELF, header.private_futex))	      \
+      : (fl))								      \
+   : ((fl) | (((private) ^ FUTEX_PRIVATE_FLAG)				      \
+	      & THREAD_GETMEM (THREAD_SELF, header.private_futex))))
+# endif	      
+#endif
 
 /* Initializer for compatibility lock.	*/
 #define LLL_MUTEX_LOCK_INITIALIZER (0)
 
-#define lll_futex_wait(futex, val) \
-  ({									      \
-     register unsigned long int __r2 asm ("2") = (unsigned long int) (futex); \
-     register unsigned long int __r3 asm ("3") = FUTEX_WAIT;		      \
-     register unsigned long int __r4 asm ("4") = (unsigned long int) (val);   \
-     register unsigned long int __r5 asm ("5") = 0ul;			      \
-     register unsigned long __result asm ("2");				      \
-									      \
-    __asm __volatile ("svc %b1"						      \
-		      : "=d" (__result)					      \
-		      : "i" (SYS_futex), "0" (__r2), "d" (__r3),	      \
-			"d" (__r4), "d" (__r5)				      \
-		      : "cc", "memory" );				      \
-    __result;								      \
-  })
-
+#define lll_futex_wait(futex, val, private) \
+  lll_futex_timed_wait (futex, val, NULL, private)
 
-#define lll_futex_timed_wait(futex, val, timespec) \
+#define lll_futex_timed_wait(futex, val, timespec, private) \
   ({									      \
     register unsigned long int __r2 asm ("2") = (unsigned long int) (futex);  \
-    register unsigned long int __r3 asm ("3") = FUTEX_WAIT;		      \
+    register unsigned long int __r3 asm ("3")				      \
+      = __lll_private_flag (FUTEX_WAIT, private);			      \
     register unsigned long int __r4 asm ("4") = (unsigned long int) (val);    \
     register unsigned long int __r5 asm ("5") = (unsigned long int)(timespec);\
     register unsigned long int __result asm ("2");			      \
@@ -73,10 +92,11 @@
   })
 
 
-#define lll_futex_wake(futex, nr) \
+#define lll_futex_wake(futex, nr, private) \
   ({									      \
     register unsigned long int __r2 asm ("2") = (unsigned long int) (futex);  \
-    register unsigned long int __r3 asm ("3") = FUTEX_WAKE;		      \
+    register unsigned long int __r3 asm ("3")				      \
+      __lll_private_flag (FUTEX_WAKE, private);				      \
     register unsigned long int __r4 asm ("4") = (unsigned long int) (nr);     \
     register unsigned long int __result asm ("2");			      \
 									      \
@@ -94,7 +114,7 @@
       int *__futexp = &(futexv);					      \
 									      \
       atomic_or (__futexp, FUTEX_OWNER_DIED);				      \
-      lll_futex_wake (__futexp, 1);					      \
+      lll_futex_wake (__futexp, 1, LLL_SHARED);				      \
     }									      \
   while (0)
 
@@ -271,7 +291,7 @@ __lll_mutex_unlock (int *futex)
 
   lll_compare_and_swap (futex, oldval, newval, "slr %2,%2");
   if (oldval > 1)
-    lll_futex_wake (futex, 1);
+    lll_futex_wake (futex, 1, LLL_SHARED);
 }
 #define lll_mutex_unlock(futex) \
   __lll_mutex_unlock(&(futex))
@@ -286,7 +306,7 @@ __lll_robust_mutex_unlock (int *futex, int mask)
 
   lll_compare_and_swap (futex, oldval, newval, "slr %2,%2");
   if (oldval & mask)
-    lll_futex_wake (futex, 1);
+    lll_futex_wake (futex, 1, LLL_SHARED);
 }
 #define lll_robust_mutex_unlock(futex) \
   __lll_robust_mutex_unlock(&(futex), FUTEX_WAITERS)
@@ -297,7 +317,7 @@ __attribute__ ((always_inline))
 __lll_mutex_unlock_force (int *futex)
 {
   *futex = 0;
-  lll_futex_wake (futex, 1);
+  lll_futex_wake (futex, 1, LLL_SHARED);
 }
 #define lll_mutex_unlock_force(futex) \
   __lll_mutex_unlock_force(&(futex))
@@ -338,7 +358,7 @@ __lll_wait_tid (int *ptid)
   int tid;
 
   while ((tid = *ptid) != 0)
-    lll_futex_wait (ptid, tid);
+    lll_futex_wait (ptid, tid, LLL_SHARED);
 }
 #define lll_wait_tid(tid) __lll_wait_tid(&(tid))