| /* |
| * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl> |
| * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl> |
| * Copyright (c) 1993-1996 Rick Sladkey <jrs@world.std.com> |
| * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl> |
| * Copyright (c) 2005-2015 Dmitry V. Levin <ldv@altlinux.org> |
| * Copyright (c) 2015 Elvira Khabirova <lineprinter0@gmail.com> |
| * Copyright (c) 2015-2017 The strace developers. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "defs.h" |
| |
| #include DEF_MPERS_TYPE(stack_t) |
| |
| #include <signal.h> |
| |
| #include MPERS_DEFS |
| |
| #include "xlat/sigaltstack_flags.h" |
| |
| static void |
| print_stack_t(struct tcb *const tcp, const kernel_ulong_t addr) |
| { |
| stack_t ss; |
| |
| if (umove_or_printaddr(tcp, addr, &ss)) |
| return; |
| |
| tprints("{ss_sp="); |
| printaddr(ptr_to_kulong(ss.ss_sp)); |
| tprints(", ss_flags="); |
| printflags(sigaltstack_flags, ss.ss_flags, "SS_???"); |
| tprintf(", ss_size=%" PRI_klu "}", (kernel_ulong_t) ss.ss_size); |
| } |
| |
| SYS_FUNC(sigaltstack) |
| { |
| if (entering(tcp)) { |
| print_stack_t(tcp, tcp->u_arg[0]); |
| tprints(", "); |
| } else { |
| print_stack_t(tcp, tcp->u_arg[1]); |
| } |
| return 0; |
| } |