Author: sewardj
Date: 2007-11-17 01:35:08 +0000 (Sat, 17 Nov 2007)
New Revision: 7169
Log:
Add support for private futexes (whatever they might be). Patch from
Eric Dumazet. Fixes #146781.
Modified:
trunk/coregrind/m_syswrap/syswrap-linux.c
trunk/include/vki/vki-linux.h
Modified: trunk/coregrind/m_syswrap/syswrap-linux.c
===================================================================
--- trunk/coregrind/m_syswrap/syswrap-linux.c 2007-11-16 22:29:27 UTC (rev
7168)
+++ trunk/coregrind/m_syswrap/syswrap-linux.c 2007-11-17 01:35:08 UTC (rev
7169)
@@ -844,21 +844,25 @@
PRINT("sys_futex ( %p, %d, %d, %p, %p )", ARG1,ARG2,ARG3,ARG4,ARG5);
switch(ARG2) {
case VKI_FUTEX_CMP_REQUEUE:
+ case VKI_FUTEX_CMP_REQUEUE | VKI_FUTEX_PRIVATE_FLAG:
PRE_REG_READ6(long, "futex",
vki_u32 *, futex, int, op, int, val,
struct timespec *, utime, vki_u32 *, uaddr2, int, val3);
break;
case VKI_FUTEX_REQUEUE:
+ case VKI_FUTEX_REQUEUE | VKI_FUTEX_PRIVATE_FLAG:
PRE_REG_READ5(long, "futex",
vki_u32 *, futex, int, op, int, val,
struct timespec *, utime, vki_u32 *, uaddr2);
break;
case VKI_FUTEX_WAIT:
+ case VKI_FUTEX_WAIT | VKI_FUTEX_PRIVATE_FLAG:
PRE_REG_READ4(long, "futex",
vki_u32 *, futex, int, op, int, val,
struct timespec *, utime);
break;
case VKI_FUTEX_WAKE:
+ case VKI_FUTEX_WAKE | VKI_FUTEX_PRIVATE_FLAG:
case VKI_FUTEX_FD:
PRE_REG_READ3(long, "futex",
vki_u32 *, futex, int, op, int, val);
@@ -874,16 +878,20 @@
switch(ARG2) {
case VKI_FUTEX_WAIT:
+ case VKI_FUTEX_WAIT | VKI_FUTEX_PRIVATE_FLAG:
if (ARG4 != 0)
PRE_MEM_READ( "futex(timeout)", ARG4, sizeof(struct vki_timespec) );
break;
case VKI_FUTEX_REQUEUE:
+ case VKI_FUTEX_REQUEUE | VKI_FUTEX_PRIVATE_FLAG:
case VKI_FUTEX_CMP_REQUEUE:
+ case VKI_FUTEX_CMP_REQUEUE | VKI_FUTEX_PRIVATE_FLAG:
PRE_MEM_READ( "futex(futex2)", ARG5, sizeof(Int) );
break;
case VKI_FUTEX_WAKE:
+ case VKI_FUTEX_WAKE | VKI_FUTEX_PRIVATE_FLAG:
case VKI_FUTEX_FD:
/* no additional pointers */
break;
Modified: trunk/include/vki/vki-linux.h
===================================================================
--- trunk/include/vki/vki-linux.h 2007-11-16 22:29:27 UTC (rev 7168)
+++ trunk/include/vki/vki-linux.h 2007-11-17 01:35:08 UTC (rev 7169)
@@ -1151,6 +1151,7 @@
#define VKI_FUTEX_FD (2)
#define VKI_FUTEX_REQUEUE (3)
#define VKI_FUTEX_CMP_REQUEUE (4)
+#define VKI_FUTEX_PRIVATE_FLAG (128)
struct vki_robust_list {
struct vki_robust_list __user *next;
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