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linux-user: make FUTEX_* calls honor timeout parameter 

Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: malc <av1474@comtv.ru>
This commit is contained in:
Nathan Froyd 2009-08-03 08:43:29 -07:00 committed by malc
parent d6630708bd
commit a16aae0ca4
1 changed files with 16 additions and 8 deletions
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24
linux-user/syscall.c
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@ -4026,14 +4026,16 @@ static int do_futex(target_ulong uaddr, int op, int val, target_ulong timeout,
target_ulong uaddr2, int val3)
{
struct timespec ts, *pts;
int base_op;
/* ??? We assume FUTEX_* constants are the same on both host
and target. */
#ifdef FUTEX_CMD_MASK
switch ((op&FUTEX_CMD_MASK)) {
base_op = op & FUTEX_CMD_MASK;
#else
switch (op) {
base_op = op;
#endif
switch (base_op) {
case FUTEX_WAIT:
if (timeout) {
pts = &ts;
@ -4045,16 +4047,22 @@ static int do_futex(target_ulong uaddr, int op, int val, target_ulong timeout,
pts, NULL, 0));
case FUTEX_WAKE:
return get_errno(sys_futex(g2h(uaddr), op, val, NULL, NULL, 0));
case FUTEX_WAKE_OP:
return get_errno(sys_futex(g2h(uaddr), op, val, NULL, g2h(uaddr2), val3 ));
case FUTEX_FD:
return get_errno(sys_futex(g2h(uaddr), op, val, NULL, NULL, 0));
case FUTEX_REQUEUE:
return get_errno(sys_futex(g2h(uaddr), op, val,
NULL, g2h(uaddr2), 0));
case FUTEX_CMP_REQUEUE:
return get_errno(sys_futex(g2h(uaddr), op, val,
NULL, g2h(uaddr2), tswap32(val3)));
case FUTEX_WAKE_OP:
/* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the
TIMEOUT parameter is interpreted as a uint32_t by the kernel.
But the prototype takes a `struct timespec *'; insert casts
to satisfy the compiler. We do not need to tswap TIMEOUT
since it's not compared to guest memory. */
pts = (struct timespec *)(uintptr_t) timeout;
return get_errno(sys_futex(g2h(uaddr), op, val, pts,
g2h(uaddr2),
(base_op == FUTEX_CMP_REQUEUE
? tswap32(val3)
: val3)));
default:
return -TARGET_ENOSYS;
}