c3ac40611c
* xlat/futexbitset.in: New file. * futex.c: Include "xlat/futexbitset.h". (futex) <FUTEX_WAIT_BITSET, FUTEX_WAKE_BITSET>: Decode val3 using futexbitset xlat. * tests/futex.c: Add checks for 0xffffffff bitset mask printing. Closes: Linux commit v4.16-rc1~166^2^2~2
144 lines
4.2 KiB
C
144 lines
4.2 KiB
C
/*
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* Copyright (c) 2002-2003 Roland McGrath <roland@redhat.com>
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* Copyright (c) 2007-2008 Ulrich Drepper <drepper@redhat.com>
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* Copyright (c) 2009 Andreas Schwab <schwab@redhat.com>
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* Copyright (c) 2014-2015 Dmitry V. Levin <ldv@altlinux.org>
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* Copyright (c) 2014-2018 The strace developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "defs.h"
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#ifndef FUTEX_PRIVATE_FLAG
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# define FUTEX_PRIVATE_FLAG 128
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#endif
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#ifndef FUTEX_CLOCK_REALTIME
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# define FUTEX_CLOCK_REALTIME 256
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#endif
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#ifndef FUTEX_OP_OPARG_SHIFT
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# define FUTEX_OP_OPARG_SHIFT 8
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#endif
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#include "xlat/futexbitset.h"
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#include "xlat/futexops.h"
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#include "xlat/futexwakeops.h"
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#include "xlat/futexwakecmps.h"
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SYS_FUNC(futex)
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{
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const kernel_ulong_t uaddr = tcp->u_arg[0];
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const int op = tcp->u_arg[1];
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const int cmd = op & 127;
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const kernel_ulong_t timeout = tcp->u_arg[3];
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const kernel_ulong_t uaddr2 = tcp->u_arg[4];
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const unsigned int val = tcp->u_arg[2];
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const unsigned int val2 = tcp->u_arg[3];
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const unsigned int val3 = tcp->u_arg[5];
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const char *comment;
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printaddr(uaddr);
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tprints(", ");
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printxval(futexops, op, "FUTEX_???");
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switch (cmd) {
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case FUTEX_WAIT:
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tprintf(", %u", val);
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tprints(", ");
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print_timespec(tcp, timeout);
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break;
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case FUTEX_LOCK_PI:
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tprints(", ");
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print_timespec(tcp, timeout);
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break;
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case FUTEX_WAIT_BITSET:
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tprintf(", %u", val);
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tprints(", ");
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print_timespec(tcp, timeout);
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tprints(", ");
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printxval(futexbitset, val3, NULL);
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break;
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case FUTEX_WAKE_BITSET:
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tprintf(", %u", val);
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tprints(", ");
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printxval(futexbitset, val3, NULL);
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break;
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case FUTEX_REQUEUE:
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tprintf(", %u", val);
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tprintf(", %u, ", val2);
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printaddr(uaddr2);
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break;
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case FUTEX_CMP_REQUEUE:
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case FUTEX_CMP_REQUEUE_PI:
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tprintf(", %u", val);
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tprintf(", %u, ", val2);
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printaddr(uaddr2);
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tprintf(", %u", val3);
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break;
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case FUTEX_WAKE_OP:
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tprintf(", %u", val);
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tprintf(", %u, ", val2);
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printaddr(uaddr2);
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tprints(", ");
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if ((val3 >> 28) & FUTEX_OP_OPARG_SHIFT) {
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print_xlat(FUTEX_OP_OPARG_SHIFT);
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tprints("<<28|");
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}
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comment = printxval(futexwakeops, (val3 >> 28) & 0x7, NULL)
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? NULL : "FUTEX_OP_???";
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tprints("<<28");
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tprints_comment(comment);
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tprintf("|%#x<<12|", (val3 >> 12) & 0xfff);
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comment = printxval(futexwakecmps, (val3 >> 24) & 0xf, NULL)
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? NULL : "FUTEX_OP_CMP_???";
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tprints("<<24");
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tprints_comment(comment);
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tprintf("|%#x", val3 & 0xfff);
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break;
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case FUTEX_WAIT_REQUEUE_PI:
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tprintf(", %u", val);
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tprints(", ");
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print_timespec(tcp, timeout);
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tprints(", ");
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printaddr(uaddr2);
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break;
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case FUTEX_FD:
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case FUTEX_WAKE:
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tprintf(", %u", val);
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break;
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case FUTEX_UNLOCK_PI:
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case FUTEX_TRYLOCK_PI:
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break;
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default:
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tprintf(", %u", val);
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tprints(", ");
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printaddr(timeout);
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tprints(", ");
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printaddr(uaddr2);
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tprintf(", %#x", val3);
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break;
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}
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return RVAL_DECODED;
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}
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