1 /* PPC specific symbolic name handling. 2 Copyright (C) 2004 Red Hat, Inc. 3 Written by Ulrich Drepper <drepper (at) redhat.com>, 2004. 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_ppc.h> 24 25 26 /* Return of the backend. */ 27 const char * 28 ppc_backend_name (void) 29 { 30 return "ppc"; 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 // XXX Check all the appear values. 42 [R_PPC_NONE] = { "R_PPC_NONE", both }, 43 [R_PPC_ADDR32] = { "R_PPC_ADDR32", both }, 44 [R_PPC_ADDR24] = { "R_PPC_ADDR24", both }, 45 [R_PPC_ADDR16] = { "R_PPC_ADDR16", both }, 46 [R_PPC_ADDR16_LO] = { "R_PPC_ADDR16_LO", both }, 47 [R_PPC_ADDR16_HI] = { "R_PPC_ADDR16_HI", both }, 48 [R_PPC_ADDR16_HA] = { "R_PPC_ADDR16_HA", both }, 49 [R_PPC_ADDR14] = { "R_PPC_ADDR14", exec }, 50 [R_PPC_ADDR14_BRTAKEN] = { "R_PPC_ADDR14_BRTAKEN", exec }, 51 [R_PPC_ADDR14_BRNTAKEN] = { "R_PPC_ADDR14_BRNTAKEN", exec }, 52 [R_PPC_REL24] = { "R_PPC_REL24", both }, 53 [R_PPC_REL14] = { "R_PPC_REL14", both }, 54 [R_PPC_REL14_BRTAKEN] = { "R_PPC_REL14_BRTAKEN", exec }, 55 [R_PPC_REL14_BRNTAKEN] = { "R_PPC_REL14_BRNTAKEN", exec }, 56 [R_PPC_GOT16] = { "R_PPC_GOT16", rel }, 57 [R_PPC_GOT16_LO] = { "R_PPC_GOT16_LO", rel }, 58 [R_PPC_GOT16_HI] = { "R_PPC_GOT16_HI", rel }, 59 [R_PPC_GOT16_HA] = { "R_PPC_GOT16_HA", rel }, 60 [R_PPC_PLTREL24] = { "R_PPC_PLTREL24", rel }, 61 [R_PPC_COPY] = { "R_PPC_COPY", exec }, 62 [R_PPC_GLOB_DAT] = { "R_PPC_GLOB_DAT", exec }, 63 [R_PPC_JMP_SLOT] = { "R_PPC_JMP_SLOT", exec }, 64 [R_PPC_RELATIVE] = { "R_PPC_RELATIVE", exec }, 65 [R_PPC_LOCAL24PC] = { "R_PPC_LOCAL24PC", rel }, 66 [R_PPC_UADDR32] = { "R_PPC_UADDR32", exec }, 67 [R_PPC_UADDR16] = { "R_PPC_UADDR16", exec }, 68 [R_PPC_REL32] = { "R_PPC_REL32", exec }, 69 [R_PPC_PLT32] = { "R_PPC_PLT32", exec }, 70 [R_PPC_PLTREL32] = { "R_PPC_PLTREL32", both }, 71 [R_PPC_PLT16_LO] = { "R_PPC_PLT16_LO", both }, 72 [R_PPC_PLT16_HI] = { "R_PPC_PLT16_HI", both }, 73 [R_PPC_PLT16_HA] = { "R_PPC_PLT16_HA", both }, 74 [R_PPC_SDAREL16] = { "R_PPC_SDAREL16", both }, 75 [R_PPC_SECTOFF] = { "R_PPC_SECTOFF", both }, 76 [R_PPC_SECTOFF_LO] = { "R_PPC_SECTOFF_LO", both }, 77 [R_PPC_SECTOFF_HI] = { "R_PPC_SECTOFF_HI", both }, 78 [R_PPC_SECTOFF_HA] = { "R_PPC_SECTOFF_HA", both }, 79 [R_PPC_TLS] = { "R_PPC_TLS", both }, 80 [R_PPC_DTPMOD32] = { "R_PPC_DTPMOD32", exec }, 81 [R_PPC_TPREL16] = { "R_PPC_TPREL16", rel }, 82 [R_PPC_TPREL16_LO] = { "R_PPC_TPREL16_LO", rel }, 83 [R_PPC_TPREL16_HI] = { "R_PPC_TPREL16_HI", rel }, 84 [R_PPC_TPREL16_HA] = { "R_PPC_TPREL16_HA", rel }, 85 [R_PPC_TPREL32] = { "R_PPC_TPREL32", exec }, 86 [R_PPC_DTPREL16] = { "R_PPC_DTPREL16", rel }, 87 [R_PPC_DTPREL16_LO] = { "R_PPC_DTPREL16_LO", rel }, 88 [R_PPC_DTPREL16_HI] = { "R_PPC_DTPREL16_HI", rel }, 89 [R_PPC_DTPREL16_HA] = { "R_PPC_DTPREL16_HA", rel }, 90 [R_PPC_DTPREL32] = { "R_PPC_DTPREL32", exec }, 91 [R_PPC_GOT_TLSGD16] = { "R_PPC_GOT_TLSGD16", exec }, 92 [R_PPC_GOT_TLSGD16_LO] = { "R_PPC_GOT_TLSGD16_LO", exec }, 93 [R_PPC_GOT_TLSGD16_HI] = { "R_PPC_GOT_TLSGD16_HI", exec }, 94 [R_PPC_GOT_TLSGD16_HA] = { "R_PPC_GOT_TLSGD16_HA", exec }, 95 [R_PPC_GOT_TLSLD16] = { "R_PPC_GOT_TLSLD16", exec }, 96 [R_PPC_GOT_TLSLD16_LO] = { "R_PPC_GOT_TLSLD16_LO", exec }, 97 [R_PPC_GOT_TLSLD16_HI] = { "R_PPC_GOT_TLSLD16_HI", exec }, 98 [R_PPC_GOT_TLSLD16_HA] = { "R_PPC_GOT_TLSLD16_HA", exec }, 99 [R_PPC_GOT_TPREL16] = { "R_PPC_GOT_TPREL16", exec }, 100 [R_PPC_GOT_TPREL16_LO] = { "R_PPC_GOT_TPREL16_LO", exec }, 101 [R_PPC_GOT_TPREL16_HI] = { "R_PPC_GOT_TPREL16_HI", exec }, 102 [R_PPC_GOT_TPREL16_HA] = { "R_PPC_GOT_TPREL16_HA", exec }, 103 [R_PPC_GOT_DTPREL16] = { "R_PPC_GOT_DTPREL16", exec }, 104 [R_PPC_GOT_DTPREL16_LO] = { "R_PPC_GOT_DTPREL16_LO", exec }, 105 [R_PPC_GOT_DTPREL16_HI] = { "R_PPC_GOT_DTPREL16_HI", exec }, 106 [R_PPC_GOT_DTPREL16_HA] = { "R_PPC_GOT_DTPREL16_HA", exec } 107 }; 108 109 110 /* Determine relocation type string for PPC. */ 111 const char * 112 ppc_reloc_type_name (int type, char *buf, size_t len) 113 { 114 if (type < 0 || type >= R_PPC_NUM) 115 return NULL; 116 117 return reloc_map_table[type].name; 118 } 119 120 121 /* Check for correct relocation type. */ 122 bool 123 ppc_reloc_type_check (int type) 124 { 125 return (type >= R_PPC_NONE && type < R_PPC_NUM 126 && reloc_map_table[type].name != NULL) ? true : false; 127 } 128 129 130 /* Check for correct relocation type use. */ 131 bool 132 ppc_reloc_valid_use (Elf *elf, int type) 133 { 134 if (type < R_PPC_NONE || type >= R_PPC_NUM 135 || reloc_map_table[type].name == NULL) 136 return false; 137 138 Elf32_Ehdr *ehdr = elf32_getehdr (elf); 139 assert (ehdr != NULL); 140 141 if (reloc_map_table[type].appear == rel) 142 return ehdr->e_type == ET_REL; 143 144 if (reloc_map_table[type].appear == exec) 145 return ehdr->e_type != ET_REL; 146 147 assert (reloc_map_table[type].appear == both); 148 return true; 149 } 150
