1 1.1 riastrad /* $NetBSD: contextspfunc.S,v 1.1 2025/04/21 02:33:44 riastradh Exp $ */ 2 1.1 riastrad 3 1.1 riastrad /*- 4 1.1 riastrad * Copyright (c) 2025 The NetBSD Foundation, Inc. 5 1.1 riastrad * All rights reserved. 6 1.1 riastrad * 7 1.1 riastrad * Redistribution and use in source and binary forms, with or without 8 1.1 riastrad * modification, are permitted provided that the following conditions 9 1.1 riastrad * are met: 10 1.1 riastrad * 1. Redistributions of source code must retain the above copyright 11 1.1 riastrad * notice, this list of conditions and the following disclaimer. 12 1.1 riastrad * 2. Redistributions in binary form must reproduce the above copyright 13 1.1 riastrad * notice, this list of conditions and the following disclaimer in the 14 1.1 riastrad * documentation and/or other materials provided with the distribution. 15 1.1 riastrad * 16 1.1 riastrad * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 1.1 riastrad * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 1.1 riastrad * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 1.1 riastrad * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 1.1 riastrad * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 1.1 riastrad * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 1.1 riastrad * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 1.1 riastrad * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 1.1 riastrad * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 1.1 riastrad * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 1.1 riastrad * POSSIBILITY OF SUCH DAMAGE. 27 1.1 riastrad */ 28 1.1 riastrad 29 1.1 riastrad #define _LOCORE 30 1.1 riastrad 31 1.1 riastrad #include <machine/asm.h> 32 1.1 riastrad 33 1.1 riastrad RCSID("$NetBSD: contextspfunc.S,v 1.1 2025/04/21 02:33:44 riastradh Exp $") 34 1.1 riastrad 35 1.1 riastrad /* 36 1.1 riastrad * contextspfunc() 37 1.1 riastrad * 38 1.1 riastrad * makecontext(3) function. Store the stack pointer on entry at 39 1.1 riastrad * the global variable contextsp and call contextdone. 40 1.1 riastrad */ 41 1.1 riastrad ENTRY(contextspfunc) 42 1.1 riastrad call getpc_eax 43 1.1 riastrad addl $_GLOBAL_OFFSET_TABLE_,%eax 44 1.1 riastrad movl _C_LABEL(contextsp)@GOT(%eax),%eax 45 1.1 riastrad movl %esp,(%eax) 46 1.1 riastrad jmp _C_LABEL(contextdone)@PLT 47 1.1 riastrad END(contextspfunc) 48 1.1 riastrad 49 1.1 riastrad .text 50 1.1 riastrad _ALIGN_TEXT 51 1.1 riastrad .local getpc_eax 52 1.1 riastrad .type getpc_eax,@function 53 1.1 riastrad getpc_eax: 54 1.1 riastrad movl (%esp),%eax 55 1.1 riastrad ret 56 1.1 riastrad END(getpc_eax) 57
Indexes created Mon Sep 22 05:09:51 GMT 2025