Module Name: src Committed By: ragge Date: Mon Apr 30 06:46:12 UTC 2018
Added Files: src/sys/arch/vax/vax: kobj_machdep.c Log Message: Kernel linker support for vax. Now modules can be loaded again. XXX - should keep modules on physical segment instead of in KVM. To generate a diff of this commit: cvs rdiff -u -r0 -r1.1 src/sys/arch/vax/vax/kobj_machdep.c Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.
Added files: Index: src/sys/arch/vax/vax/kobj_machdep.c diff -u /dev/null src/sys/arch/vax/vax/kobj_machdep.c:1.1 --- /dev/null Mon Apr 30 06:46:12 2018 +++ src/sys/arch/vax/vax/kobj_machdep.c Mon Apr 30 06:46:12 2018 @@ -0,0 +1,76 @@ +/* $NetBSD: kobj_machdep.c,v 1.1 2018/04/30 06:46:12 ragge Exp $ */ + +/*- + * Copyright (c) 2018 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Anders Magnusson. + * + * 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 <sys/param.h> +#include <sys/kobj.h> +#include <sys/exec.h> +#include <sys/exec_elf.h> + +/* + * VAX kernel uses two relocations; + * - R_VAX_PC32 which is PC relative offset + * - R_VAX_32 which is an absolute symbol offset + */ +int +kobj_reloc(kobj_t ko, uintptr_t relocbase, const void *data, + bool isrela, bool local) +{ + const Elf_Rela *rela = (const Elf_Rela *)data; + Elf_Word rtype = ELF_R_TYPE(rela->r_info); + Elf_Word symidx = ELF_R_SYM(rela->r_info); + Elf_Addr *where = (Elf_Addr *)(relocbase + rela->r_offset); + Elf_Addr addr, addend = rela->r_addend; + int error; + + if (!isrela) { + printf("Elf_Rel not supported"); + return -1; + } + if (rtype != R_VAX_PC32 && rtype != R_VAX_32) { + printf("Bad relocation %d", rtype); + return -1; + } + + if ((error = kobj_sym_lookup(ko, symidx, &addr))) + return -1; + addr += addend; + if (rtype == R_VAX_PC32) + addr -= (Elf_Addr)where + 4; + + *where = addr; + return 0; +} + +int +kobj_machdep(kobj_t ko, void *base, size_t size, bool load) +{ + return 0; +}