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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* Copyright (c) 1988 AT&T */ 23 /* All Rights Reserved */ 24 25 26 /* 27 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 28 * Use is subject to license terms. 29 */ 30 31 #pragma ident "%Z%%M% %I% %E% SMI" 32 33 34 #include <sys/setjmp.h> 35 #include "../common/ucontext.h" 36 37 int _getsp(); 38 39 int 40 setjmp(env) 41 jmp_buf env; 42 { 43 register o_setjmp_struct_t *bp = (o_setjmp_struct_t *)env; 44 register int sp = _getsp(); 45 ucontext_t uc; 46 47 /* 48 * Get the current machine context. 49 */ 50 uc.uc_flags = UC_STACK; 51 __getcontext(&uc); 52 53 /* 54 * Note that the pc and former sp (fp) from the stack are valid 55 * because the call to __getcontext must flush the user windows 56 * to the stack. 57 */ 58 bp->sjs_flags = 0; 59 bp->sjs_sp = *((int *)sp+14); 60 bp->sjs_pc = *((int *)sp+15) + 0x8; 61 bp->sjs_sigmask[0] = 0; 62 bp->sjs_sigmask[1] = 0; 63 bp->sjs_sigmask[2] = 0; 64 bp->sjs_stack = uc.uc_stack; 65 66 return (0); 67 } 68 69 70 void 71 longjmp(env, val) 72 jmp_buf env; 73 int val; 74 { 75 o_setjmp_struct_t *bp = (o_setjmp_struct_t *)env; 76 setjmp_struct_t sjmp, *sp; 77 78 sp = &sjmp; 79 sp->sjs_flags = bp->sjs_flags; 80 sp->sjs_sp = bp->sjs_sp; 81 sp->sjs_pc = bp->sjs_pc; 82 sp->sjs_fp = 0; 83 sp->sjs_i7 = 0; 84 sp->sjs_uclink = 0; 85 sp->sjs_sigmask[0] = bp->sjs_sigmask[0]; 86 sp->sjs_sigmask[1] = bp->sjs_sigmask[1]; 87 sp->sjs_sigmask[2] = bp->sjs_sigmask[2]; 88 sp->sjs_sigmask[3] = 0; 89 sp->sjs_stack = bp->sjs_stack; 90 _siglongjmp(sjmp, val); 91 } 92