Patchwork [33/37] linux-user/syscall.c: handle FUTEX_WAIT_BITSET in do_futex

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Submitter Michael Roth
Date April 2, 2013, 9:45 p.m.
Message ID <1364939142-30066-34-git-send-email-mdroth@linux.vnet.ibm.com>
Download mbox | patch
Permalink /patch/233194/
State New
Headers show

Comments

Michael Roth - April 2, 2013, 9:45 p.m.
From: John Rigby <john.rigby@linaro.org>

Upstream libc has recently changed to start using
FUTEX_WAIT_BITSET instead of FUTEX_WAIT and this
is causing do_futex to return -TARGET_ENOSYS.

Pass bitset in val3 to sys_futex which will be
ignored by kernel for the FUTEX_WAIT case.

Signed-off-by: John Rigby <john.rigby@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
(cherry picked from commit cce246e0a21577bb2372ab3a7d6789371e087de9)

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
---
 linux-user/syscall.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Patch

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 9e31ea7..7bc5ba9 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -4920,6 +4920,7 @@  static int do_futex(target_ulong uaddr, int op, int val, target_ulong timeout,
 #endif
     switch (base_op) {
     case FUTEX_WAIT:
+    case FUTEX_WAIT_BITSET:
         if (timeout) {
             pts = &ts;
             target_to_host_timespec(pts, timeout);
@@ -4927,7 +4928,7 @@  static int do_futex(target_ulong uaddr, int op, int val, target_ulong timeout,
             pts = NULL;
         }
         return get_errno(sys_futex(g2h(uaddr), op, tswap32(val),
-                         pts, NULL, 0));
+                         pts, NULL, val3));
     case FUTEX_WAKE:
         return get_errno(sys_futex(g2h(uaddr), op, val, NULL, NULL, 0));
     case FUTEX_FD: