1 /* x86_64 specific symbolic name handling. 2 Copyright (C) 2002 Red Hat, Inc. 3 Written by Ulrich Drepper <drepper (at) redhat.com>, 2002. 4 5 This program is Open Source software; you can redistribute it and/or 6 modify it under the terms of the Open Software License version 1.0 as 7 published by the Open Source Initiative. 8 9 You should have received a copy of the Open Software License along 10 with this program; if not, you may obtain a copy of the Open Software 11 License version 1.0 from http://www.opensource.org/licenses/osl.php or 12 by writing the Open Source Initiative c/o Lawrence Rosen, Esq., 13 3001 King Ranch Road, Ukiah, CA 95482. */ 14 15 #ifdef HAVE_CONFIG_H 16 # include <config.h> 17 #endif 18 19 #include <assert.h> 20 #include <elf.h> 21 #include <stddef.h> 22 23 #include <libebl_x86_64.h> 24 25 26 /* Return of the backend. */ 27 const char * 28 x86_64_backend_name (void) 29 { 30 return "x86-64"; 31 } 32 33 34 /* Relocation mapping table. */ 35 static struct 36 { 37 const char *name; 38 enum { both = 0, rel = 1, exec = 2 } appear; 39 } reloc_map_table[] = 40 { 41 [R_X86_64_NONE] = { "R_X86_64_NONE", both }, 42 [R_X86_64_64] = { "R_X86_64_64", rel }, 43 [R_X86_64_PC32] = { "R_X86_64_PC32", rel }, 44 [R_X86_64_GOT32] = { "R_X86_64_GOT32", rel }, 45 [R_X86_64_PLT32] = { "R_X86_64_PLT32", rel }, 46 [R_X86_64_COPY] = { "R_X86_64_COPY", exec }, 47 [R_X86_64_GLOB_DAT] = { "R_X86_64_GLOB_DAT", exec }, 48 [R_X86_64_JUMP_SLOT] = { "R_X86_64_JUMP_SLOT", exec }, 49 [R_X86_64_RELATIVE] = { "R_X86_64_RELATIVE", exec }, 50 [R_X86_64_GOTPCREL] = { "R_X86_64_GOTPCREL", exec }, 51 [R_X86_64_32] = { "R_X86_64_32", rel }, 52 [R_X86_64_32S] = { "R_X86_64_32S", rel }, 53 [R_X86_64_16] = { "R_X86_64_16", rel }, 54 [R_X86_64_PC16] = { "R_X86_64_PC16", rel }, 55 [R_X86_64_8] = { "R_X86_64_8", rel }, 56 [R_X86_64_PC8] = { "R_X86_64_PC8", rel }, 57 [R_X86_64_DTPMOD64] = { "R_X86_64_DTPMOD64", rel }, 58 [R_X86_64_DTPOFF64] = { "R_X86_64_DTPOFF64", rel }, 59 [R_X86_64_TPOFF64] = { "R_X86_64_TPOFF64", rel }, 60 [R_X86_64_TLSGD] = { "R_X86_64_TLSGD", rel }, 61 [R_X86_64_TLSLD] = { "R_X86_64_TLSLD", rel }, 62 [R_X86_64_DTPOFF32] = { "R_X86_64_DTPOFF32", rel }, 63 [R_X86_64_GOTTPOFF] = { "R_X86_64_GOTTPOFF", rel }, 64 [R_X86_64_TPOFF32] = { "R_X86_64_TPOFF32", rel } 65 }; 66 67 68 /* Determine relocation type string for x86-64. */ 69 const char * 70 x86_64_reloc_type_name (int type, char *buf, size_t len) 71 { 72 if (type < 0 || type >= R_X86_64_NUM) 73 return NULL; 74 75 return reloc_map_table[type].name; 76 } 77 78 79 /* Check for correct relocation type. */ 80 bool 81 x86_64_reloc_type_check (int type) 82 { 83 return (type >= R_X86_64_NONE && type < R_X86_64_NUM 84 && reloc_map_table[type].name != NULL) ? true : false; 85 } 86 87 88 /* Check for correct relocation type use. */ 89 bool 90 x86_64_reloc_valid_use (Elf *elf, int type) 91 { 92 if (type < R_X86_64_NONE || type >= R_X86_64_NUM 93 || reloc_map_table[type].name == NULL) 94 return false; 95 96 Elf64_Ehdr *ehdr = elf64_getehdr (elf); 97 assert (ehdr != NULL); 98 99 if (reloc_map_table[type].appear == rel) 100 return ehdr->e_type == ET_REL; 101 102 if (reloc_map_table[type].appear == exec) 103 return ehdr->e_type != ET_REL; 104 105 assert (reloc_map_table[type].appear == both); 106 return true; 107 } 108
