1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 1988 AT&T 24 * All Rights Reserved 25 * 26 * 27 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 28 * Use is subject to license terms. 29 */ 30 31 #ifndef __ELF_DOT_H 32 #define __ELF_DOT_H 33 34 #pragma ident "%Z%%M% %I% %E% SMI" 35 36 #include <sys/types.h> 37 #include <elf.h> 38 #include <_rtld.h> 39 40 #ifdef __cplusplus 41 extern "C" { 42 #endif 43 44 /* 45 * Common extern functions for ELF file class. 46 */ 47 extern int elf_reloc(Rt_map *, uint_t); 48 extern void elf_plt_init(void *, caddr_t); 49 extern int elf_set_prot(Rt_map *, int); 50 extern Rt_map *elf_obj_file(Lm_list *, Aliste, const char *, int); 51 extern Rt_map *elf_obj_fini(Lm_list *, Rt_map *); 52 extern int elf_copy_reloc(char *, Sym *, Rt_map *, void *, Sym *, 53 Rt_map *, const void *); 54 extern Sym *elf_find_sym(Slookup *, Rt_map **, uint_t *); 55 extern Sym *elf_lazy_find_sym(Slookup *, Rt_map **, uint_t *); 56 extern Rt_map *elf_lazy_load(Rt_map *, uint_t, const char *); 57 extern Sym *elf_lookup_filtee(Slookup *, Rt_map **, uint_t *, uint_t); 58 extern Rt_map *elf_new_lm(Lm_list *, const char *, const char *, Dyn *, 59 ulong_t, ulong_t, Aliste, ulong_t, ulong_t, ulong_t, 60 ulong_t, Mmap *, uint_t); 61 extern int elf_rtld_load(); 62 63 #if defined(__sparcv9) 64 extern void elf_plt2_init(uint_t *, Rt_map *); 65 #endif 66 67 #if defined(i386) 68 extern ulong_t elf_reloc_relacount(ulong_t, ulong_t, ulong_t, ulong_t); 69 extern int elf_copy_gen(Rt_map *); 70 #endif 71 72 /* 73 * Padinfo 74 * 75 * Used to track the which PLTpadd entries have been used and 76 * to where they are bound. 77 * 78 * NOTE: these are only currently used for SparcV9 79 */ 80 typedef struct pltpadinfo { 81 Addr pp_addr; 82 void *pp_plt; 83 } Pltpadinfo; 84 85 /* 86 * Private data for an ELF file class. 87 */ 88 typedef struct _rt_elf_private { 89 void *e_symtab; /* symbol table */ 90 uint_t *e_hash; /* hash table */ 91 char *e_strtab; /* string table */ 92 void *e_reloc; /* relocation table */ 93 uint_t *e_pltgot; /* addrs for procedure linkage table */ 94 void *e_pltreserve; /* ia64: DT_IA_64_PLTRESERVE */ 95 void *e_dynplt; /* dynamic plt table - used by prof */ 96 void *e_jmprel; /* plt relocations */ 97 ulong_t e_pltrelsize; /* size of PLT relocation entries */ 98 ulong_t e_relsz; /* size of relocs */ 99 ulong_t e_relent; /* size of base reloc entry */ 100 ulong_t e_movesz; /* size of movetabs */ 101 ulong_t e_moveent; /* size of base movetab entry */ 102 ulong_t e_tlsstatoff; /* TLS offset into static block */ 103 void *e_movetab; /* movetable address */ 104 Phdr *e_sunwbss; /* program header for SUNWBSS */ 105 Phdr *e_pttls; /* PT_TLS */ 106 Phdr *e_ptunwind; /* PT_SUNW_UNWIND (amd64 specific) */ 107 ulong_t e_syment; /* size of symtab entry */ 108 ulong_t e_entry; /* entry point for file */ 109 Verneed *e_verneed; /* versions needed by this image and */ 110 int e_verneednum; /* their associated count */ 111 Verdef *e_verdef; /* versions defined by this image and */ 112 int e_verdefnum; /* their associated count */ 113 ulong_t e_syminent; /* syminfo entry size */ 114 void *e_pltpad; /* PLTpad table */ 115 void *e_pltpadend; /* end of PLTpad table */ 116 } Rt_elfp; 117 118 /* 119 * Macros for getting to linker ELF private data. 120 */ 121 #define ELFPRV(X) ((X)->rt_priv) 122 #define SYMTAB(X) (((Rt_elfp *)(X)->rt_priv)->e_symtab) 123 #define HASH(X) (((Rt_elfp *)(X)->rt_priv)->e_hash) 124 #define STRTAB(X) (((Rt_elfp *)(X)->rt_priv)->e_strtab) 125 #define REL(X) (((Rt_elfp *)(X)->rt_priv)->e_reloc) 126 #define PLTGOT(X) (((Rt_elfp *)(X)->rt_priv)->e_pltgot) 127 #define MOVESZ(X) (((Rt_elfp *)(X)->rt_priv)->e_movesz) 128 #define MOVEENT(X) (((Rt_elfp *)(X)->rt_priv)->e_moveent) 129 #define MOVETAB(X) (((Rt_elfp *)(X)->rt_priv)->e_movetab) 130 #define DYNPLT(X) (((Rt_elfp *)(X)->rt_priv)->e_dynplt) 131 #define JMPREL(X) (((Rt_elfp *)(X)->rt_priv)->e_jmprel) 132 #define PTTLS(X) (((Rt_elfp *)(X)->rt_priv)->e_pttls) 133 #define PTUNWIND(X) (((Rt_elfp *)(X)->rt_priv)->e_ptunwind) 134 #define TLSSTATOFF(X) (((Rt_elfp *)(X)->rt_priv)->e_tlsstatoff) 135 #define PLTRELSZ(X) (((Rt_elfp *)(X)->rt_priv)->e_pltrelsize) 136 #define RELSZ(X) (((Rt_elfp *)(X)->rt_priv)->e_relsz) 137 #define RELENT(X) (((Rt_elfp *)(X)->rt_priv)->e_relent) 138 #define SYMENT(X) (((Rt_elfp *)(X)->rt_priv)->e_syment) 139 #define ENTRY(X) (((Rt_elfp *)(X)->rt_priv)->e_entry) 140 #define VERNEED(X) (((Rt_elfp *)(X)->rt_priv)->e_verneed) 141 #define VERNEEDNUM(X) (((Rt_elfp *)(X)->rt_priv)->e_verneednum) 142 #define VERDEF(X) (((Rt_elfp *)(X)->rt_priv)->e_verdef) 143 #define VERDEFNUM(X) (((Rt_elfp *)(X)->rt_priv)->e_verdefnum) 144 #define SUNWBSS(X) (((Rt_elfp *)(X)->rt_priv)->e_sunwbss) 145 #define SYMINENT(X) (((Rt_elfp *)(X)->rt_priv)->e_syminent) 146 #define PLTPAD(X) (((Rt_elfp *)(X)->rt_priv)->e_pltpad) 147 #define PLTPADEND(X) (((Rt_elfp *)(X)->rt_priv)->e_pltpadend) 148 #define PLTRESERVE(X) (((Rt_elfp *)(X)->rt_priv)->e_pltreserve) 149 150 #ifdef __cplusplus 151 } 152 #endif 153 154 #endif /* __ELF_DOT_H */ 155