1 /* $OpenBSD: archdep.h,v 1.18 2023/11/18 16:26:17 deraadt Exp $ */ 2 3 /* 4 * Copyright (c) 1998-2002 Opsycon AB, Sweden. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 19 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 */ 28 29 #ifndef _MIPS_ARCHDEP_H_ 30 #define _MIPS_ARCHDEP_H_ 31 32 #define RELOC_TAG DT_REL 33 #define MACHID EM_MIPS /* ELF e_machine ID value checked */ 34 35 /* Only used in lib/csu/mips64/boot_md.h */ 36 #ifdef RCRT0 37 38 #include "util.h" /* for _dl_memset */ 39 40 #define RELOC_DYN(relp, symp, adrp, val) \ 41 do { \ 42 if (ELF_R_TYPE(relp->r_info) == R_MIPS_REL32_64) { \ 43 if (ELF_R_SYM(relp->r_info) != 0) \ 44 *adrp += symp->st_value + val; \ 45 else \ 46 *adrp += val; \ 47 } else if (ELF_R_TYPE(relp->r_info) != R_MIPS_NONE) { \ 48 _csu_abort(); \ 49 } \ 50 } while (0) 51 52 #define RELOC_GOT(obj, off) \ 53 do { \ 54 struct boot_dyn *__dynld = obj; \ 55 long __loff = off; \ 56 Elf_Addr *gotp; \ 57 int i, n; \ 58 const Elf_Sym *sp; \ 59 \ 60 /* Do all local gots */ \ 61 gotp = __dynld->dt_pltgot; \ 62 n = __dynld->dt_proc[DT_MIPS_LOCAL_GOTNO - DT_LOPROC]; \ 63 \ 64 for (i = 2; i < n; i++) { \ 65 gotp[i] += __loff; \ 66 } \ 67 gotp += n; \ 68 \ 69 /* Do symbol referencing gots. There should be no global... */ \ 70 n = __dynld->dt_proc[DT_MIPS_SYMTABNO - DT_LOPROC] - \ 71 __dynld->dt_proc[DT_MIPS_GOTSYM - DT_LOPROC]; \ 72 sp = __dynld->dt_symtab; \ 73 sp += __dynld->dt_proc[DT_MIPS_GOTSYM - DT_LOPROC]; \ 74 \ 75 while (n--) { \ 76 if (sp->st_shndx == SHN_UNDEF || \ 77 sp->st_shndx == SHN_COMMON) { \ 78 if (ELF_ST_BIND(sp->st_info) != STB_WEAK) \ 79 _csu_abort(); \ 80 } else if (ELF_ST_TYPE(sp->st_info) == STT_FUNC) { \ 81 *gotp += __loff; \ 82 } else { \ 83 *gotp = sp->st_value + __loff; \ 84 } \ 85 gotp++; \ 86 sp++; \ 87 } \ 88 } while (0) 89 90 #endif /* RCRT0 */ 91 #endif /* _MIPS_ARCHDEP_H_ */ 92