1 /*
2 * Copyright (c) 2002-2003 Roland McGrath <roland@redhat.com>
3 * Copyright (c) 2007-2008 Ulrich Drepper <drepper@redhat.com>
4 * Copyright (c) 2009 Andreas Schwab <schwab@redhat.com>
5 * Copyright (c) 2014-2015 Dmitry V. Levin <ldv@altlinux.org>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "defs.h"
32
33 #ifndef FUTEX_PRIVATE_FLAG
34 # define FUTEX_PRIVATE_FLAG 128
35 #endif
36 #ifndef FUTEX_CLOCK_REALTIME
37 # define FUTEX_CLOCK_REALTIME 256
38 #endif
39
40 #include "xlat/futexops.h"
41 #include "xlat/futexwakeops.h"
42 #include "xlat/futexwakecmps.h"
43
SYS_FUNC(futex)44 SYS_FUNC(futex)
45 {
46 const kernel_ulong_t uaddr = tcp->u_arg[0];
47 const int op = tcp->u_arg[1];
48 const int cmd = op & 127;
49 const kernel_ulong_t timeout = tcp->u_arg[3];
50 const kernel_ulong_t uaddr2 = tcp->u_arg[4];
51 const unsigned int val = tcp->u_arg[2];
52 const unsigned int val2 = tcp->u_arg[3];
53 const unsigned int val3 = tcp->u_arg[5];
54
55 printaddr(uaddr);
56 tprints(", ");
57 printxval(futexops, op, "FUTEX_???");
58 switch (cmd) {
59 case FUTEX_WAIT:
60 tprintf(", %u", val);
61 tprints(", ");
62 print_timespec(tcp, timeout);
63 break;
64 case FUTEX_LOCK_PI:
65 tprints(", ");
66 print_timespec(tcp, timeout);
67 break;
68 case FUTEX_WAIT_BITSET:
69 tprintf(", %u", val);
70 tprints(", ");
71 print_timespec(tcp, timeout);
72 tprintf(", %#x", val3);
73 break;
74 case FUTEX_WAKE_BITSET:
75 tprintf(", %u", val);
76 tprintf(", %#x", val3);
77 break;
78 case FUTEX_REQUEUE:
79 tprintf(", %u", val);
80 tprintf(", %u, ", val2);
81 printaddr(uaddr2);
82 break;
83 case FUTEX_CMP_REQUEUE:
84 case FUTEX_CMP_REQUEUE_PI:
85 tprintf(", %u", val);
86 tprintf(", %u, ", val2);
87 printaddr(uaddr2);
88 tprintf(", %u", val3);
89 break;
90 case FUTEX_WAKE_OP:
91 tprintf(", %u", val);
92 tprintf(", %u, ", val2);
93 printaddr(uaddr2);
94 tprints(", ");
95 if ((val3 >> 28) & 8)
96 tprints("FUTEX_OP_OPARG_SHIFT<<28|");
97 if (printxval(futexwakeops, (val3 >> 28) & 0x7, NULL))
98 tprints("<<28");
99 else
100 tprints("<<28 /* FUTEX_OP_??? */");
101 tprintf("|%#x<<12|", (val3 >> 12) & 0xfff);
102 if (printxval(futexwakecmps, (val3 >> 24) & 0xf, NULL))
103 tprints("<<24");
104 else
105 tprints("<<24 /* FUTEX_OP_CMP_??? */");
106 tprintf("|%#x", val3 & 0xfff);
107 break;
108 case FUTEX_WAIT_REQUEUE_PI:
109 tprintf(", %u", val);
110 tprints(", ");
111 print_timespec(tcp, timeout);
112 tprints(", ");
113 printaddr(uaddr2);
114 break;
115 case FUTEX_FD:
116 case FUTEX_WAKE:
117 tprintf(", %u", val);
118 break;
119 case FUTEX_UNLOCK_PI:
120 case FUTEX_TRYLOCK_PI:
121 break;
122 default:
123 tprintf(", %u", val);
124 tprints(", ");
125 printaddr(timeout);
126 tprints(", ");
127 printaddr(uaddr2);
128 tprintf(", %#x", val3);
129 break;
130 }
131
132 return RVAL_DECODED;
133 }
134