1*0Sstevel@tonic-gate/* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate/* 23*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate#pragma ident "%Z%%M% %I% %E% SMI" 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate#if defined(__lint) 30*0Sstevel@tonic-gate#include <setjmp.h> 31*0Sstevel@tonic-gate#endif 32*0Sstevel@tonic-gate 33*0Sstevel@tonic-gate#include <sys/asm_linkage.h> 34*0Sstevel@tonic-gate 35*0Sstevel@tonic-gate/* 36*0Sstevel@tonic-gate * longjmp(env, val) 37*0Sstevel@tonic-gate * will generate a "return(val)" from 38*0Sstevel@tonic-gate * the last call to 39*0Sstevel@tonic-gate * setjmp(env) 40*0Sstevel@tonic-gate * by restoring registers ip, sp, bp, bx, si, and di from 'env' 41*0Sstevel@tonic-gate * and doing a return. 42*0Sstevel@tonic-gate * 43*0Sstevel@tonic-gate * entry reg offset from (%si) 44*0Sstevel@tonic-gate * env[0] = %ebx 0 / register variables 45*0Sstevel@tonic-gate * env[1] = %esi 4 46*0Sstevel@tonic-gate * env[2] = %edi 8 47*0Sstevel@tonic-gate * env[3] = %ebp 12 / stack frame 48*0Sstevel@tonic-gate * env[4] = %esp 16 49*0Sstevel@tonic-gate * env[5] = %eip 20 50*0Sstevel@tonic-gate */ 51*0Sstevel@tonic-gate 52*0Sstevel@tonic-gate#if defined(__lint) 53*0Sstevel@tonic-gate/* ARGSUSED */ 54*0Sstevel@tonic-gateint 55*0Sstevel@tonic-gatesetjmp(jmp_buf env) 56*0Sstevel@tonic-gate{ 57*0Sstevel@tonic-gate return (0); 58*0Sstevel@tonic-gate} 59*0Sstevel@tonic-gate 60*0Sstevel@tonic-gate/* ARGSUSED */ 61*0Sstevel@tonic-gateint 62*0Sstevel@tonic-gatesigsetjmp(sigjmp_buf env, int savemask) 63*0Sstevel@tonic-gate{ 64*0Sstevel@tonic-gate return (0); 65*0Sstevel@tonic-gate} 66*0Sstevel@tonic-gate#else /* __lint */ 67*0Sstevel@tonic-gate 68*0Sstevel@tonic-gate ENTRY(setjmp) 69*0Sstevel@tonic-gate ALTENTRY(sigsetjmp) 70*0Sstevel@tonic-gate movl 4(%esp),%eax / jmpbuf address 71*0Sstevel@tonic-gate movl %ebx,0(%eax) / save ebx 72*0Sstevel@tonic-gate movl %esi,4(%eax) / save esi 73*0Sstevel@tonic-gate movl %edi,8(%eax) / save edi 74*0Sstevel@tonic-gate movl %ebp,12(%eax) / save caller's ebp 75*0Sstevel@tonic-gate popl %edx / return address 76*0Sstevel@tonic-gate movl %esp,16(%eax) / save caller's esp 77*0Sstevel@tonic-gate movl %edx,20(%eax) 78*0Sstevel@tonic-gate subl %eax,%eax / return 0 79*0Sstevel@tonic-gate jmp *%edx 80*0Sstevel@tonic-gate SET_SIZE(sigsetjmp) 81*0Sstevel@tonic-gate SET_SIZE(setjmp) 82*0Sstevel@tonic-gate 83*0Sstevel@tonic-gate#endif /* __lint */ 84*0Sstevel@tonic-gate 85*0Sstevel@tonic-gate#if defined(__lint) 86*0Sstevel@tonic-gate/* ARGSUSED */ 87*0Sstevel@tonic-gatevoid 88*0Sstevel@tonic-gatelongjmp(jmp_buf env, int val) 89*0Sstevel@tonic-gate{ 90*0Sstevel@tonic-gate} 91*0Sstevel@tonic-gate 92*0Sstevel@tonic-gate/* ARGSUSED */ 93*0Sstevel@tonic-gatevoid 94*0Sstevel@tonic-gatesiglongjmp(sigjmp_buf env, int val) 95*0Sstevel@tonic-gate{ 96*0Sstevel@tonic-gate} 97*0Sstevel@tonic-gate#else /* __lint */ 98*0Sstevel@tonic-gate 99*0Sstevel@tonic-gate ENTRY(longjmp) 100*0Sstevel@tonic-gate ALTENTRY(siglongjmp) 101*0Sstevel@tonic-gate movl 4(%esp),%edx / first parameter after return addr 102*0Sstevel@tonic-gate movl 8(%esp),%eax / second parameter 103*0Sstevel@tonic-gate movl 0(%edx),%ebx / restore ebx 104*0Sstevel@tonic-gate movl 4(%edx),%esi / restore esi 105*0Sstevel@tonic-gate movl 8(%edx),%edi / restore edi 106*0Sstevel@tonic-gate movl 12(%edx),%ebp / restore caller's ebp 107*0Sstevel@tonic-gate movl 16(%edx),%esp / restore caller's esp 108*0Sstevel@tonic-gate test %eax,%eax / if val != 0 109*0Sstevel@tonic-gate jnz .ret / return val 110*0Sstevel@tonic-gate incl %eax / else return 1 111*0Sstevel@tonic-gate.ret: 112*0Sstevel@tonic-gate jmp *20(%edx) / return to caller 113*0Sstevel@tonic-gate SET_SIZE(siglongjmp) 114*0Sstevel@tonic-gate SET_SIZE(longjmp) 115*0Sstevel@tonic-gate 116*0Sstevel@tonic-gate#endif /* __lint */ 117