10Sstevel@tonic-gate /* 20Sstevel@tonic-gate * CDDL HEADER START 30Sstevel@tonic-gate * 40Sstevel@tonic-gate * The contents of this file are subject to the terms of the 56515Sraf * Common Development and Distribution License (the "License"). 66515Sraf * You may not use this file except in compliance with the License. 70Sstevel@tonic-gate * 80Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 90Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 100Sstevel@tonic-gate * See the License for the specific language governing permissions 110Sstevel@tonic-gate * and limitations under the License. 120Sstevel@tonic-gate * 130Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 140Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 150Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 160Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 170Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 180Sstevel@tonic-gate * 190Sstevel@tonic-gate * CDDL HEADER END 200Sstevel@tonic-gate */ 211016Sraf 226515Sraf /* 236515Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 246515Sraf * Use is subject to license terms. 256515Sraf */ 266515Sraf 270Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */ 280Sstevel@tonic-gate /* All Rights Reserved */ 290Sstevel@tonic-gate 300Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 310Sstevel@tonic-gate 32*6812Sraf #pragma weak _getcontext = getcontext 330Sstevel@tonic-gate 34*6812Sraf #include "lint.h" 351016Sraf #include "thr_uberdata.h" 360Sstevel@tonic-gate #include <ucontext.h> 370Sstevel@tonic-gate #include <sys/types.h> 380Sstevel@tonic-gate 390Sstevel@tonic-gate int getcontext(ucontext_t * ucp)400Sstevel@tonic-gategetcontext(ucontext_t *ucp) 410Sstevel@tonic-gate { 420Sstevel@tonic-gate greg_t *reg; 430Sstevel@tonic-gate 440Sstevel@tonic-gate ucp->uc_flags = UC_ALL; 456515Sraf if (__getcontext(ucp)) 460Sstevel@tonic-gate return (-1); 470Sstevel@tonic-gate 480Sstevel@tonic-gate /* 490Sstevel@tonic-gate * Note that %o1 and %g1 are modified by the system call 500Sstevel@tonic-gate * routine. ABI calling conventions specify that the caller 510Sstevel@tonic-gate * cannot depend upon %o0 through %o5 nor %g1, so no effort is 520Sstevel@tonic-gate * made to maintain these registers. %o0 is forced to reflect 530Sstevel@tonic-gate * an affirmative return code. 540Sstevel@tonic-gate */ 550Sstevel@tonic-gate reg = ucp->uc_mcontext.gregs; 560Sstevel@tonic-gate reg[REG_SP] = getfp(); 570Sstevel@tonic-gate reg[REG_O7] = caller(); 580Sstevel@tonic-gate reg[REG_PC] = reg[REG_O7] + 8; 590Sstevel@tonic-gate reg[REG_nPC] = reg[REG_PC] + 4; 600Sstevel@tonic-gate reg[REG_O0] = 0; 610Sstevel@tonic-gate 620Sstevel@tonic-gate return (0); 630Sstevel@tonic-gate } 64