1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* 28 * Copyright 2023 Oxide Computer Company 29 */ 30 31 #include "lint.h" 32 #include <sys/types.h> 33 #include <sys/ucontext.h> 34 #include <setjmp.h> 35 #include <ucontext.h> 36 #include <strings.h> 37 #include <upanic.h> 38 #include "sigjmp_struct.h" 39 #include "libc.h" 40 41 #pragma weak _siglongjmp = siglongjmp 42 43 void siglongjmp(sigjmp_buf env,int val)44siglongjmp(sigjmp_buf env, int val) 45 { 46 const char *msg = "siglongjmp(): setcontext() returned"; 47 ucontext_t *ucp = SIGJMP2UCONTEXT(env); 48 49 if (val) 50 ucp->uc_mcontext.gregs[REG_R0] = val; 51 else 52 ucp->uc_mcontext.gregs[REG_R0] = 1; 53 54 /* 55 * While unlikely, it is possible that setcontext() may fail for some 56 * reason. If that happens, we will kill the process. 57 */ 58 (void) setcontext(ucp); 59 upanic(msg, strlen(msg) + 1); 60 } 61