1 /* 2 * Copyright (c) 1991, 1992 Paul Kranenburg <pk (at) cs.few.eur.nl> 3 * Copyright (c) 1993 Branko Lankester <branko (at) hacktic.nl> 4 * Copyright (c) 1993-1996 Rick Sladkey <jrs (at) world.std.com> 5 * Copyright (c) 1996-1999 Wichert Akkerman <wichert (at) cistron.nl> 6 * Copyright (c) 2005-2015 Dmitry V. Levin <ldv (at) altlinux.org> 7 * Copyright (c) 2015 Elvira Khabirova <lineprinter0 (at) gmail.com> 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include "defs.h" 34 35 #include DEF_MPERS_TYPE(stack_t) 36 37 #include <signal.h> 38 39 #include MPERS_DEFS 40 41 #include "xlat/sigaltstack_flags.h" 42 43 static void 44 print_stack_t(struct tcb *const tcp, const kernel_ulong_t addr) 45 { 46 stack_t ss; 47 48 if (umove_or_printaddr(tcp, addr, &ss)) 49 return; 50 51 tprints("{ss_sp="); 52 printaddr(ptr_to_kulong(ss.ss_sp)); 53 tprints(", ss_flags="); 54 printflags(sigaltstack_flags, ss.ss_flags, "SS_???"); 55 tprintf(", ss_size=%" PRI_klu "}", (kernel_ulong_t) ss.ss_size); 56 } 57 58 SYS_FUNC(sigaltstack) 59 { 60 if (entering(tcp)) { 61 print_stack_t(tcp, tcp->u_arg[0]); 62 tprints(", "); 63 } else { 64 print_stack_t(tcp, tcp->u_arg[1]); 65 } 66 return 0; 67 } 68
