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 #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 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
