diff --git a/usr.sbin/kldxref/ef_mips.c b/usr.sbin/kldxref/ef_mips.c index edc99a7d2505..60fd35390d7e 100644 --- a/usr.sbin/kldxref/ef_mips.c +++ b/usr.sbin/kldxref/ef_mips.c @@ -1,120 +1,119 @@ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2019 John Baldwin * * This software was developed by SRI International and the University of * Cambridge Computer Laboratory (Department of Computer Science and * Technology) under DARPA contract HR0011-18-C-0016 ("ECATS"), as part of the * DARPA SSITH research programme. * * 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 AUTHOR 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 AUTHOR 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 #include #include #include #include "ef.h" /* * Apply relocations to the values we got from the file. `relbase' is the * target relocation address of the section, and `dataoff' is the target * relocation address of the data in `dest'. */ static int ef_mips_reloc(struct elf_file *ef, const void *reldata, Elf_Type reltype, GElf_Addr relbase, GElf_Addr dataoff, size_t len, void *dest) { char *where; GElf_Addr val; const GElf_Rel *rel; const GElf_Rela *rela; GElf_Addr addend, addr; GElf_Size rtype, symidx; switch (reltype) { case ELF_T_REL: rel = (const GElf_Rel *)reldata; where = (char *)dest + relbase + rel->r_offset - dataoff; addend = 0; rtype = GELF_R_TYPE(rel->r_info); symidx = GELF_R_SYM(rel->r_info); break; case ELF_T_RELA: rela = (const GElf_Rela *)reldata; where = (char *)dest + relbase + rela->r_offset - dataoff; addend = rela->r_addend; rtype = GELF_R_TYPE(rela->r_info); symidx = GELF_R_SYM(rela->r_info); break; default: return (EINVAL); } if (where < (char *)dest || where >= (char *)dest + len) return (0); if (reltype == ELF_T_REL) { if (elf_class(ef) == ELFCLASS64) { if (elf_encoding(ef) == ELFDATA2LSB) addend = le64dec(where); else addend = be64dec(where); } else { if (elf_encoding(ef) == ELFDATA2LSB) addend = le32dec(where); else addend = be32dec(where); } - addend = *where; } switch (rtype) { case R_MIPS_64: /* S + A */ addr = EF_SYMADDR(ef, symidx); val = addr + addend; if (elf_encoding(ef) == ELFDATA2LSB) le64enc(where, val); else be64enc(where, val); break; case R_MIPS_32: /* S + A */ addr = EF_SYMADDR(ef, symidx); val = addr + addend; if (elf_encoding(ef) == ELFDATA2LSB) le32enc(where, val); else be32enc(where, val); break; default: warnx("unhandled relocation type %d", (int)rtype); } return (0); } ELF_RELOC(ELFCLASS32, ELFDATA2LSB, EM_MIPS, ef_mips_reloc); ELF_RELOC(ELFCLASS32, ELFDATA2MSB, EM_MIPS, ef_mips_reloc); ELF_RELOC(ELFCLASS64, ELFDATA2LSB, EM_MIPS, ef_mips_reloc); ELF_RELOC(ELFCLASS64, ELFDATA2MSB, EM_MIPS, ef_mips_reloc);