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/*
* Copyright (c) 2002-2003 Roland McGrath <roland@redhat.com>
* Copyright (c) 2007-2008 Ulrich Drepper <drepper@redhat.com>
* Copyright (c) 2009 Andreas Schwab <schwab@redhat.com>
* Copyright (c) 2014-2015 Dmitry V. Levin <ldv@strace.io>
* Copyright (c) 2014-2019 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#include "defs.h"
#ifndef FUTEX_PRIVATE_FLAG
# define FUTEX_PRIVATE_FLAG 128
#endif
#ifndef FUTEX_CLOCK_REALTIME
# define FUTEX_CLOCK_REALTIME 256
#endif
#ifndef FUTEX_OP_OPARG_SHIFT
# define FUTEX_OP_OPARG_SHIFT 8
#endif
#include "xlat/futexbitset.h"
#include "xlat/futexops.h"
#include "xlat/futexwakeops.h"
#include "xlat/futexwakecmps.h"
static int
do_futex(struct tcb *const tcp, const print_obj_by_addr_fn print_ts)
{
const kernel_ulong_t uaddr = tcp->u_arg[0];
const int op = tcp->u_arg[1];
const int cmd = op & 127;
const kernel_ulong_t timeout = tcp->u_arg[3];
const kernel_ulong_t uaddr2 = tcp->u_arg[4];
const unsigned int val = tcp->u_arg[2];
const unsigned int val2 = tcp->u_arg[3];
const unsigned int val3 = tcp->u_arg[5];
const char *comment;
printaddr(uaddr);
tprints(", ");
printxval(futexops, op, "FUTEX_???");
switch (cmd) {
case FUTEX_WAIT:
tprintf(", %u", val);
tprints(", ");
print_ts(tcp, timeout);
break;
case FUTEX_LOCK_PI:
tprints(", ");
print_ts(tcp, timeout);
break;
case FUTEX_WAIT_BITSET:
tprintf(", %u", val);
tprints(", ");
print_ts(tcp, timeout);
tprints(", ");
printxval(futexbitset, val3, NULL);
break;
case FUTEX_WAKE_BITSET:
tprintf(", %u", val);
tprints(", ");
printxval(futexbitset, val3, NULL);
break;
case FUTEX_REQUEUE:
tprintf(", %u", val);
tprintf(", %u, ", val2);
printaddr(uaddr2);
break;
case FUTEX_CMP_REQUEUE:
case FUTEX_CMP_REQUEUE_PI:
tprintf(", %u", val);
tprintf(", %u, ", val2);
printaddr(uaddr2);
tprintf(", %u", val3);
break;
case FUTEX_WAKE_OP:
tprintf(", %u", val);
tprintf(", %u, ", val2);
printaddr(uaddr2);
tprints(", ");
if ((val3 >> 28) & FUTEX_OP_OPARG_SHIFT) {
print_xlat(FUTEX_OP_OPARG_SHIFT);
tprints("<<28|");
}
comment = printxval(futexwakeops, (val3 >> 28) & 0x7, NULL)
? NULL : "FUTEX_OP_???";
tprints("<<28");
tprints_comment(comment);
tprintf("|%#x<<12|", (val3 >> 12) & 0xfff);
comment = printxval(futexwakecmps, (val3 >> 24) & 0xf, NULL)
? NULL : "FUTEX_OP_CMP_???";
tprints("<<24");
tprints_comment(comment);
tprintf("|%#x", val3 & 0xfff);
break;
case FUTEX_WAIT_REQUEUE_PI:
tprintf(", %u", val);
tprints(", ");
print_ts(tcp, timeout);
tprints(", ");
printaddr(uaddr2);
break;
case FUTEX_FD:
case FUTEX_WAKE:
tprintf(", %u", val);
break;
case FUTEX_UNLOCK_PI:
case FUTEX_TRYLOCK_PI:
break;
default:
tprintf(", %u", val);
tprints(", ");
printaddr(timeout);
tprints(", ");
printaddr(uaddr2);
tprintf(", %#x", val3);
break;
}
return RVAL_DECODED;
}
#if HAVE_ARCH_TIME32_SYSCALLS
SYS_FUNC(futex_time32)
{
return do_futex(tcp, print_timespec32);
}
#endif
SYS_FUNC(futex_time64)
{
return do_futex(tcp, print_timespec64);
}
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