/* $NetBSD: crt0.S,v 1.4 2018/11/26 17:37:45 joerg Exp $ */ /*- * Copyright (c) 2013 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Matt Thomas of 3am Software Foundry. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ #include <mips/asm.h> RCSID("$NetBSD: crt0.S,v 1.4 2018/11/26 17:37:45 joerg Exp $") STRONG_ALIAS(_start,__start) /* * Assumes kernel (or ld_elf.so) passes the following parameters to * user-space in registers: * * a0 stack pointer (0 if setregs didn't fill this in) * a1 cleanup * a2 Obj_Entry * a3 ps_strings * * XXX Does this violate the ABI? * as well as the usual registers (pc, sp, and t9 == pc for ABI). */ NESTED_NOPROFILE(__start, CALLFRAME_SIZ, ra) SETUP_GP SETUP_GP64(t3, __start) move a0, a1 /* cleanup */ PTR_L t9,%call16(_C_LABEL(___start))(gp) move a1, a3 /* ps_strings */ .reloc 1f,R_MIPS_JALR,___start 1: jr t9 END(__start) |