| /* |
| * Copyright (c) 1992, 1993 |
| * The Regents of the University of California. All rights reserved. |
| * |
| * This software was developed by the Computer Systems Engineering group |
| * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and |
| * contributed to Berkeley. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 4. Neither the name of the University nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * $Header: _setjmp.s,v 1.1 91/07/06 16:45:53 torek Exp |
| */ |
| |
| #if defined(LIBC_SCCS) && !defined(lint) |
| #if 0 |
| .asciz "@(#)_setjmp.s 8.1 (Berkeley) 6/4/93" |
| #else |
| RCSID("$NetBSD: _setjmp.S,v 1.4 1998/10/08 02:27:59 eeh Exp $") |
| #endif |
| #endif /* LIBC_SCCS and not lint */ |
| |
| #include <machine/asm.h> |
| __FBSDID("$FreeBSD$"); |
| |
| #define _JB_FP 0x0 |
| #define _JB_PC 0x8 |
| #define _JB_SP 0x10 |
| |
| .register %g2,#ignore |
| .register %g3,#ignore |
| |
| /* |
| * C library -- setjmp, longjmp |
| * |
| * longjmp(a,v) |
| * will generate a "return(v?v:1)" from |
| * the last call to |
| * setjmp(a) |
| * by restoring the previous context. |
| */ |
| |
| ENTRY(_setjmp) |
| stx %sp, [%o0 + _JB_SP] |
| stx %o7, [%o0 + _JB_PC] |
| stx %fp, [%o0 + _JB_FP] |
| retl |
| clr %o0 |
| END(_setjmp) |
| |
| ENTRY(_longjmp) |
| mov 1, %g1 |
| movrnz %o1, %o1, %g1 |
| mov %o0, %g2 |
| ldx [%g2 + _JB_FP], %g3 |
| 1: cmp %fp, %g3 |
| bl,a 1b |
| restore |
| be,a 2f |
| ldx [%g2 + _JB_SP], %o0 |
| |
| .Lbotch: |
| illtrap |
| |
| 2: cmp %o0, %sp |
| bge,a 3f |
| mov %o0, %sp |
| b,a .Lbotch |
| nop |
| 3: ldx [%g2 + _JB_PC], %o7 |
| retl |
| mov %g1, %o0 |
| END(_longjmp) |