1 /* 2 * Copyright (c) 2002-2003 Roland McGrath <roland (at) redhat.com> 3 * Copyright (c) 2007-2008 Ulrich Drepper <drepper (at) redhat.com> 4 * Copyright (c) 2009 Andreas Schwab <schwab (at) redhat.com> 5 * Copyright (c) 2014-2015 Dmitry V. Levin <ldv (at) 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 #ifdef HAVE_LINUX_FUTEX_H 34 # include <linux/futex.h> 35 #endif 36 37 #ifndef FUTEX_PRIVATE_FLAG 38 # define FUTEX_PRIVATE_FLAG 128 39 #endif 40 #ifndef FUTEX_CLOCK_REALTIME 41 # define FUTEX_CLOCK_REALTIME 256 42 #endif 43 44 #include "xlat/futexops.h" 45 #include "xlat/futexwakeops.h" 46 #include "xlat/futexwakecmps.h" 47 48 SYS_FUNC(futex) 49 { 50 const long uaddr = tcp->u_arg[0]; 51 const int op = tcp->u_arg[1]; 52 const int cmd = op & 127; 53 const long timeout = tcp->u_arg[3]; 54 const long uaddr2 = tcp->u_arg[4]; 55 const unsigned int val = tcp->u_arg[2]; 56 const unsigned int val2 = tcp->u_arg[3]; 57 const unsigned int val3 = tcp->u_arg[5]; 58 59 printaddr(uaddr); 60 tprints(", "); 61 printxval(futexops, op, "FUTEX_???"); 62 tprintf(", %u", val); 63 switch (cmd) { 64 case FUTEX_WAIT: 65 case FUTEX_LOCK_PI: 66 tprints(", "); 67 print_timespec(tcp, timeout); 68 break; 69 case FUTEX_WAIT_BITSET: 70 tprints(", "); 71 print_timespec(tcp, timeout); 72 tprintf(", %x", val3); 73 break; 74 case FUTEX_WAKE_BITSET: 75 tprintf(", %x", val3); 76 break; 77 case FUTEX_REQUEUE: 78 tprintf(", %u, ", val2); 79 printaddr(uaddr2); 80 break; 81 case FUTEX_CMP_REQUEUE: 82 case FUTEX_CMP_REQUEUE_PI: 83 tprintf(", %u, ", val2); 84 printaddr(uaddr2); 85 tprintf(", %u", val3); 86 break; 87 case FUTEX_WAKE_OP: 88 tprintf(", %u, ", val2); 89 printaddr(uaddr2); 90 tprints(", {"); 91 if ((val3 >> 28) & 8) 92 tprints("FUTEX_OP_OPARG_SHIFT|"); 93 printxval(futexwakeops, (val3 >> 28) & 0x7, "FUTEX_OP_???"); 94 tprintf(", %u, ", (val3 >> 12) & 0xfff); 95 if ((val3 >> 24) & 8) 96 tprints("FUTEX_OP_OPARG_SHIFT|"); 97 printxval(futexwakecmps, (val3 >> 24) & 0x7, "FUTEX_OP_CMP_???"); 98 tprintf(", %u}", val3 & 0xfff); 99 break; 100 case FUTEX_WAIT_REQUEUE_PI: 101 tprints(", "); 102 print_timespec(tcp, timeout); 103 tprints(", "); 104 printaddr(uaddr2); 105 break; 106 case FUTEX_WAKE: 107 case FUTEX_UNLOCK_PI: 108 case FUTEX_TRYLOCK_PI: 109 break; 110 default: 111 tprintf(", %lx, %lx, %x", timeout, uaddr2, val3); 112 break; 113 } 114 115 return RVAL_DECODED; 116 } 117
