_setjmp.S revision 1.1
1 1.1 fvdl /* $NetBSD: _setjmp.S,v 1.1 2001/06/19 00:25:02 fvdl Exp $ */ 2 1.1 fvdl 3 1.1 fvdl /* 4 1.1 fvdl * Copyright (c) 2001 Wasabi Systems, Inc. 5 1.1 fvdl * All rights reserved. 6 1.1 fvdl * 7 1.1 fvdl * Written by Frank van der Linden for Wasabi Systems, Inc. 8 1.1 fvdl * 9 1.1 fvdl * Redistribution and use in source and binary forms, with or without 10 1.1 fvdl * modification, are permitted provided that the following conditions 11 1.1 fvdl * are met: 12 1.1 fvdl * 1. Redistributions of source code must retain the above copyright 13 1.1 fvdl * notice, this list of conditions and the following disclaimer. 14 1.1 fvdl * 2. Redistributions in binary form must reproduce the above copyright 15 1.1 fvdl * notice, this list of conditions and the following disclaimer in the 16 1.1 fvdl * documentation and/or other materials provided with the distribution. 17 1.1 fvdl * 3. All advertising materials mentioning features or use of this software 18 1.1 fvdl * must display the following acknowledgement: 19 1.1 fvdl * This product includes software developed for the NetBSD Project by 20 1.1 fvdl * Wasabi Systems, Inc. 21 1.1 fvdl * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 1.1 fvdl * or promote products derived from this software without specific prior 23 1.1 fvdl * written permission. 24 1.1 fvdl * 25 1.1 fvdl * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 1.1 fvdl * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 1.1 fvdl * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 1.1 fvdl * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 1.1 fvdl * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 1.1 fvdl * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 1.1 fvdl * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 1.1 fvdl * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 1.1 fvdl * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 1.1 fvdl * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 1.1 fvdl * POSSIBILITY OF SUCH DAMAGE. 36 1.1 fvdl */ 37 1.1 fvdl 38 1.1 fvdl 39 1.1 fvdl #include <machine/asm.h> 40 1.1 fvdl #include <machine/setjmp.h> 41 1.1 fvdl #if defined(LIBC_SCCS) 42 1.1 fvdl RCSID("$NetBSD: _setjmp.S,v 1.1 2001/06/19 00:25:02 fvdl Exp $") 43 1.1 fvdl #endif 44 1.1 fvdl 45 1.1 fvdl /* 46 1.1 fvdl * C library -- _setjmp, _longjmp 47 1.1 fvdl * 48 1.1 fvdl * _longjmp(a,v) 49 1.1 fvdl * will generate a "return(v)" from the last call to 50 1.1 fvdl * _setjmp(a) 51 1.1 fvdl * by restoring registers from the stack. 52 1.1 fvdl * The previous signal state is NOT restored. 53 1.1 fvdl */ 54 1.1 fvdl 55 1.1 fvdl ENTRY(_setjmp) 56 1.1 fvdl movq (%rsp),%r11 57 1.1 fvdl movq %rbx,(_JB_RBX * 8)(%rdi) 58 1.1 fvdl movq %rbp,(_JB_RBP * 8)(%rdi) 59 1.1 fvdl movq %r12,(_JB_R12 * 8)(%rdi) 60 1.1 fvdl movq %r13,(_JB_R13 * 8)(%rdi) 61 1.1 fvdl movq %r14,(_JB_R14 * 8)(%rdi) 62 1.1 fvdl movq %r15,(_JB_R15 * 8)(%rdi) 63 1.1 fvdl movq %rsp,(_JB_RSP * 8)(%rdi) 64 1.1 fvdl movq %r11,(_JB_PC * 8)(%rdi) 65 1.1 fvdl 66 1.1 fvdl xorl %eax,%eax 67 1.1 fvdl ret 68 1.1 fvdl 69 1.1 fvdl ENTRY(_longjmp) 70 1.1 fvdl movq (_JB_RBX * 8)(%rdi),%rbx 71 1.1 fvdl movq (_JB_RBP * 8)(%rdi),%rbp 72 1.1 fvdl movq (_JB_R12 * 8)(%rdi),%r12 73 1.1 fvdl movq (_JB_R13 * 8)(%rdi),%r13 74 1.1 fvdl movq (_JB_R14 * 8)(%rdi),%r14 75 1.1 fvdl movq (_JB_R15 * 8)(%rdi),%r15 76 1.1 fvdl movq (_JB_RSP * 8)(%rdi),%rsp 77 1.1 fvdl movq (_JB_PC * 8)(%rdi),%r11 78 1.1 fvdl 79 1.1 fvdl movl %esi,%eax 80 1.1 fvdl testl %eax,%eax 81 1.1 fvdl jnz 1f 82 1.1 fvdl incl %eax 83 1.1 fvdl 1: movq %r11,0(%rsp) 84 1.1 fvdl ret 85
Indexes created Wed Oct 01 18:09:54 GMT 2025