Dmitry V. Levin
b93d52fe3d
strace is now provided under the terms of the GNU Lesser General Public License version 2.1 or later, see COPYING for more details. strace test suite is now provided under the terms of the GNU General Public License version 2 or later, see tests/COPYING for more details.
124 lines
2.8 KiB
C
124 lines
2.8 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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* SPDX-License-Identifier: LGPL-2.1-or-later
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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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