elf64-sparc.c revision 159400
1/* SPARC-specific support for 64-bit ELF 2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 3 2003, 2004 Free Software Foundation, Inc. 4 5 This file is part of BFD, the Binary File Descriptor library. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 20 21#include "bfd.h" 22#include "sysdep.h" 23#include "libbfd.h" 24#include "elf-bfd.h" 25#include "opcode/sparc.h" 26 27/* This is defined if one wants to build upward compatible binaries 28 with the original sparc64-elf toolchain. The support is kept in for 29 now but is turned off by default. dje 970930 */ 30/*#define SPARC64_OLD_RELOCS*/ 31 32#include "elf/sparc.h" 33 34/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ 35#define MINUS_ONE (~ (bfd_vma) 0) 36 37static struct bfd_link_hash_table * sparc64_elf_bfd_link_hash_table_create 38 PARAMS ((bfd *)); 39static bfd_reloc_status_type init_insn_reloc 40 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, 41 bfd *, bfd_vma *, bfd_vma *)); 42static reloc_howto_type *sparc64_elf_reloc_type_lookup 43 PARAMS ((bfd *, bfd_reloc_code_real_type)); 44static void sparc64_elf_info_to_howto 45 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); 46 47static void sparc64_elf_build_plt 48 PARAMS ((bfd *, unsigned char *, int)); 49static bfd_vma sparc64_elf_plt_entry_offset 50 PARAMS ((bfd_vma)); 51static bfd_vma sparc64_elf_plt_ptr_offset 52 PARAMS ((bfd_vma, bfd_vma)); 53 54static bfd_boolean sparc64_elf_check_relocs 55 PARAMS ((bfd *, struct bfd_link_info *, asection *sec, 56 const Elf_Internal_Rela *)); 57static bfd_boolean sparc64_elf_adjust_dynamic_symbol 58 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); 59static bfd_boolean sparc64_elf_size_dynamic_sections 60 PARAMS ((bfd *, struct bfd_link_info *)); 61static int sparc64_elf_get_symbol_type 62 PARAMS (( Elf_Internal_Sym *, int)); 63static bfd_boolean sparc64_elf_add_symbol_hook 64 PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Sym *, 65 const char **, flagword *, asection **, bfd_vma *)); 66static bfd_boolean sparc64_elf_output_arch_syms 67 PARAMS ((bfd *, struct bfd_link_info *, PTR, 68 bfd_boolean (*) (PTR, const char *, Elf_Internal_Sym *, 69 asection *, struct elf_link_hash_entry *))); 70static void sparc64_elf_symbol_processing 71 PARAMS ((bfd *, asymbol *)); 72 73static bfd_boolean sparc64_elf_merge_private_bfd_data 74 PARAMS ((bfd *, bfd *)); 75 76static bfd_boolean sparc64_elf_fake_sections 77 PARAMS ((bfd *, Elf_Internal_Shdr *, asection *)); 78 79static const char *sparc64_elf_print_symbol_all 80 PARAMS ((bfd *, PTR, asymbol *)); 81static bfd_boolean sparc64_elf_new_section_hook 82 PARAMS ((bfd *, asection *)); 83static bfd_boolean sparc64_elf_relax_section 84 PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *)); 85static bfd_boolean sparc64_elf_relocate_section 86 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, 87 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); 88static bfd_boolean sparc64_elf_finish_dynamic_symbol 89 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, 90 Elf_Internal_Sym *)); 91static bfd_boolean sparc64_elf_finish_dynamic_sections 92 PARAMS ((bfd *, struct bfd_link_info *)); 93static bfd_boolean sparc64_elf_object_p PARAMS ((bfd *)); 94static long sparc64_elf_get_reloc_upper_bound PARAMS ((bfd *, asection *)); 95static long sparc64_elf_get_dynamic_reloc_upper_bound PARAMS ((bfd *)); 96static bfd_boolean sparc64_elf_slurp_one_reloc_table 97 PARAMS ((bfd *, asection *, Elf_Internal_Shdr *, asymbol **, bfd_boolean)); 98static bfd_boolean sparc64_elf_slurp_reloc_table 99 PARAMS ((bfd *, asection *, asymbol **, bfd_boolean)); 100static long sparc64_elf_canonicalize_reloc 101 PARAMS ((bfd *, asection *, arelent **, asymbol **)); 102static long sparc64_elf_canonicalize_dynamic_reloc 103 PARAMS ((bfd *, arelent **, asymbol **)); 104static void sparc64_elf_write_relocs PARAMS ((bfd *, asection *, PTR)); 105static enum elf_reloc_type_class sparc64_elf_reloc_type_class 106 PARAMS ((const Elf_Internal_Rela *)); 107 108/* The relocation "howto" table. */ 109 110static bfd_reloc_status_type sparc_elf_notsup_reloc 111 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); 112static bfd_reloc_status_type sparc_elf_wdisp16_reloc 113 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); 114static bfd_reloc_status_type sparc_elf_hix22_reloc 115 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); 116static bfd_reloc_status_type sparc_elf_lox10_reloc 117 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); 118 119static reloc_howto_type sparc64_elf_howto_table[] = 120{ 121 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), 122 HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", FALSE,0,0x000000ff,TRUE), 123 HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", FALSE,0,0x0000ffff,TRUE), 124 HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", FALSE,0,0xffffffff,TRUE), 125 HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE), 126 HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE), 127 HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", FALSE,0,0xffffffff,TRUE), 128 HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE), 129 HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE), 130 HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", FALSE,0,0x003fffff,TRUE), 131 HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", FALSE,0,0x003fffff,TRUE), 132 HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", FALSE,0,0x00001fff,TRUE), 133 HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", FALSE,0,0x000003ff,TRUE), 134 HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE), 135 HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE), 136 HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE), 137 HOWTO(R_SPARC_PC10, 0,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", FALSE,0,0x000003ff,TRUE), 138 HOWTO(R_SPARC_PC22, 10,2,22,TRUE, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", FALSE,0,0x003fffff,TRUE), 139 HOWTO(R_SPARC_WPLT30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", FALSE,0,0x3fffffff,TRUE), 140 HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", FALSE,0,0x00000000,TRUE), 141 HOWTO(R_SPARC_GLOB_DAT, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GLOB_DAT",FALSE,0,0x00000000,TRUE), 142 HOWTO(R_SPARC_JMP_SLOT, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_JMP_SLOT",FALSE,0,0x00000000,TRUE), 143 HOWTO(R_SPARC_RELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE), 144 HOWTO(R_SPARC_UA32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", FALSE,0,0xffffffff,TRUE), 145#ifndef SPARC64_OLD_RELOCS 146 HOWTO(R_SPARC_PLT32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", FALSE,0,0xffffffff,TRUE), 147 /* These aren't implemented yet. */ 148 HOWTO(R_SPARC_HIPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_HIPLT22", FALSE,0,0x00000000,TRUE), 149 HOWTO(R_SPARC_LOPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_LOPLT10", FALSE,0,0x00000000,TRUE), 150 HOWTO(R_SPARC_PCPLT32, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT32", FALSE,0,0x00000000,TRUE), 151 HOWTO(R_SPARC_PCPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT22", FALSE,0,0x00000000,TRUE), 152 HOWTO(R_SPARC_PCPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT10", FALSE,0,0x00000000,TRUE), 153#endif 154 HOWTO(R_SPARC_10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", FALSE,0,0x000003ff,TRUE), 155 HOWTO(R_SPARC_11, 0,2,11,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", FALSE,0,0x000007ff,TRUE), 156 HOWTO(R_SPARC_64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", FALSE,0,MINUS_ONE, TRUE), 157 HOWTO(R_SPARC_OLO10, 0,2,13,FALSE,0,complain_overflow_signed, sparc_elf_notsup_reloc, "R_SPARC_OLO10", FALSE,0,0x00001fff,TRUE), 158 HOWTO(R_SPARC_HH22, 42,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", FALSE,0,0x003fffff,TRUE), 159 HOWTO(R_SPARC_HM10, 32,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", FALSE,0,0x000003ff,TRUE), 160 HOWTO(R_SPARC_LM22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", FALSE,0,0x003fffff,TRUE), 161 HOWTO(R_SPARC_PC_HH22, 42,2,22,TRUE, 0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_PC_HH22", FALSE,0,0x003fffff,TRUE), 162 HOWTO(R_SPARC_PC_HM10, 32,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_HM10", FALSE,0,0x000003ff,TRUE), 163 HOWTO(R_SPARC_PC_LM22, 10,2,22,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_LM22", FALSE,0,0x003fffff,TRUE), 164 HOWTO(R_SPARC_WDISP16, 2,2,16,TRUE, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", FALSE,0,0x00000000,TRUE), 165 HOWTO(R_SPARC_WDISP19, 2,2,19,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", FALSE,0,0x0007ffff,TRUE), 166 HOWTO(R_SPARC_UNUSED_42, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UNUSED_42",FALSE,0,0x00000000,TRUE), 167 HOWTO(R_SPARC_7, 0,2, 7,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", FALSE,0,0x0000007f,TRUE), 168 HOWTO(R_SPARC_5, 0,2, 5,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", FALSE,0,0x0000001f,TRUE), 169 HOWTO(R_SPARC_6, 0,2, 6,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", FALSE,0,0x0000003f,TRUE), 170 HOWTO(R_SPARC_DISP64, 0,4,64,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP64", FALSE,0,MINUS_ONE, TRUE), 171 HOWTO(R_SPARC_PLT64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT64", FALSE,0,MINUS_ONE, TRUE), 172 HOWTO(R_SPARC_HIX22, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_HIX22", FALSE,0,MINUS_ONE, FALSE), 173 HOWTO(R_SPARC_LOX10, 0,4, 0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_LOX10", FALSE,0,MINUS_ONE, FALSE), 174 HOWTO(R_SPARC_H44, 22,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_H44", FALSE,0,0x003fffff,FALSE), 175 HOWTO(R_SPARC_M44, 12,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_M44", FALSE,0,0x000003ff,FALSE), 176 HOWTO(R_SPARC_L44, 0,2,13,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_L44", FALSE,0,0x00000fff,FALSE), 177 HOWTO(R_SPARC_REGISTER, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_REGISTER",FALSE,0,MINUS_ONE, FALSE), 178 HOWTO(R_SPARC_UA64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA64", FALSE,0,MINUS_ONE, TRUE), 179 HOWTO(R_SPARC_UA16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", FALSE,0,0x0000ffff,TRUE), 180 HOWTO(R_SPARC_TLS_GD_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_HI22",FALSE,0,0x003fffff,TRUE), 181 HOWTO(R_SPARC_TLS_GD_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_LO10",FALSE,0,0x000003ff,TRUE), 182 HOWTO(R_SPARC_TLS_GD_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_ADD",FALSE,0,0x00000000,TRUE), 183 HOWTO(R_SPARC_TLS_GD_CALL,2,2,30,TRUE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_CALL",FALSE,0,0x3fffffff,TRUE), 184 HOWTO(R_SPARC_TLS_LDM_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_HI22",FALSE,0,0x003fffff,TRUE), 185 HOWTO(R_SPARC_TLS_LDM_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_LO10",FALSE,0,0x000003ff,TRUE), 186 HOWTO(R_SPARC_TLS_LDM_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_ADD",FALSE,0,0x00000000,TRUE), 187 HOWTO(R_SPARC_TLS_LDM_CALL,2,2,30,TRUE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_CALL",FALSE,0,0x3fffffff,TRUE), 188 HOWTO(R_SPARC_TLS_LDO_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_TLS_LDO_HIX22",FALSE,0,0x003fffff, FALSE), 189 HOWTO(R_SPARC_TLS_LDO_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LDO_LOX10",FALSE,0,0x000003ff, FALSE), 190 HOWTO(R_SPARC_TLS_LDO_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDO_ADD",FALSE,0,0x00000000,TRUE), 191 HOWTO(R_SPARC_TLS_IE_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_HI22",FALSE,0,0x003fffff,TRUE), 192 HOWTO(R_SPARC_TLS_IE_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LO10",FALSE,0,0x000003ff,TRUE), 193 HOWTO(R_SPARC_TLS_IE_LD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LD",FALSE,0,0x00000000,TRUE), 194 HOWTO(R_SPARC_TLS_IE_LDX,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LDX",FALSE,0,0x00000000,TRUE), 195 HOWTO(R_SPARC_TLS_IE_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_ADD",FALSE,0,0x00000000,TRUE), 196 HOWTO(R_SPARC_TLS_LE_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_TLS_LE_HIX22",FALSE,0,0x003fffff, FALSE), 197 HOWTO(R_SPARC_TLS_LE_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LE_LOX10",FALSE,0,0x000003ff, FALSE), 198 HOWTO(R_SPARC_TLS_DTPMOD32,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD32",FALSE,0,0x00000000,TRUE), 199 HOWTO(R_SPARC_TLS_DTPMOD64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD64",FALSE,0,0x00000000,TRUE), 200 HOWTO(R_SPARC_TLS_DTPOFF32,0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_TLS_DTPOFF32",FALSE,0,0xffffffff,TRUE), 201 HOWTO(R_SPARC_TLS_DTPOFF64,0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_TLS_DTPOFF64",FALSE,0,MINUS_ONE,TRUE), 202 HOWTO(R_SPARC_TLS_TPOFF32,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF32",FALSE,0,0x00000000,TRUE), 203 HOWTO(R_SPARC_TLS_TPOFF64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF64",FALSE,0,0x00000000,TRUE) 204}; 205 206struct elf_reloc_map { 207 bfd_reloc_code_real_type bfd_reloc_val; 208 unsigned char elf_reloc_val; 209}; 210 211static const struct elf_reloc_map sparc_reloc_map[] = 212{ 213 { BFD_RELOC_NONE, R_SPARC_NONE, }, 214 { BFD_RELOC_16, R_SPARC_16, }, 215 { BFD_RELOC_16_PCREL, R_SPARC_DISP16 }, 216 { BFD_RELOC_8, R_SPARC_8 }, 217 { BFD_RELOC_8_PCREL, R_SPARC_DISP8 }, 218 { BFD_RELOC_CTOR, R_SPARC_64 }, 219 { BFD_RELOC_32, R_SPARC_32 }, 220 { BFD_RELOC_32_PCREL, R_SPARC_DISP32 }, 221 { BFD_RELOC_HI22, R_SPARC_HI22 }, 222 { BFD_RELOC_LO10, R_SPARC_LO10, }, 223 { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 }, 224 { BFD_RELOC_64_PCREL, R_SPARC_DISP64 }, 225 { BFD_RELOC_SPARC22, R_SPARC_22 }, 226 { BFD_RELOC_SPARC13, R_SPARC_13 }, 227 { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 }, 228 { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 }, 229 { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 }, 230 { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 }, 231 { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 }, 232 { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 }, 233 { BFD_RELOC_SPARC_COPY, R_SPARC_COPY }, 234 { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT }, 235 { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT }, 236 { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE }, 237 { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 }, 238 { BFD_RELOC_SPARC_UA16, R_SPARC_UA16 }, 239 { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, 240 { BFD_RELOC_SPARC_UA64, R_SPARC_UA64 }, 241 { BFD_RELOC_SPARC_10, R_SPARC_10 }, 242 { BFD_RELOC_SPARC_11, R_SPARC_11 }, 243 { BFD_RELOC_SPARC_64, R_SPARC_64 }, 244 { BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10 }, 245 { BFD_RELOC_SPARC_HH22, R_SPARC_HH22 }, 246 { BFD_RELOC_SPARC_HM10, R_SPARC_HM10 }, 247 { BFD_RELOC_SPARC_LM22, R_SPARC_LM22 }, 248 { BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22 }, 249 { BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10 }, 250 { BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22 }, 251 { BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16 }, 252 { BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19 }, 253 { BFD_RELOC_SPARC_7, R_SPARC_7 }, 254 { BFD_RELOC_SPARC_5, R_SPARC_5 }, 255 { BFD_RELOC_SPARC_6, R_SPARC_6 }, 256 { BFD_RELOC_SPARC_DISP64, R_SPARC_DISP64 }, 257 { BFD_RELOC_SPARC_TLS_GD_HI22, R_SPARC_TLS_GD_HI22 }, 258 { BFD_RELOC_SPARC_TLS_GD_LO10, R_SPARC_TLS_GD_LO10 }, 259 { BFD_RELOC_SPARC_TLS_GD_ADD, R_SPARC_TLS_GD_ADD }, 260 { BFD_RELOC_SPARC_TLS_GD_CALL, R_SPARC_TLS_GD_CALL }, 261 { BFD_RELOC_SPARC_TLS_LDM_HI22, R_SPARC_TLS_LDM_HI22 }, 262 { BFD_RELOC_SPARC_TLS_LDM_LO10, R_SPARC_TLS_LDM_LO10 }, 263 { BFD_RELOC_SPARC_TLS_LDM_ADD, R_SPARC_TLS_LDM_ADD }, 264 { BFD_RELOC_SPARC_TLS_LDM_CALL, R_SPARC_TLS_LDM_CALL }, 265 { BFD_RELOC_SPARC_TLS_LDO_HIX22, R_SPARC_TLS_LDO_HIX22 }, 266 { BFD_RELOC_SPARC_TLS_LDO_LOX10, R_SPARC_TLS_LDO_LOX10 }, 267 { BFD_RELOC_SPARC_TLS_LDO_ADD, R_SPARC_TLS_LDO_ADD }, 268 { BFD_RELOC_SPARC_TLS_IE_HI22, R_SPARC_TLS_IE_HI22 }, 269 { BFD_RELOC_SPARC_TLS_IE_LO10, R_SPARC_TLS_IE_LO10 }, 270 { BFD_RELOC_SPARC_TLS_IE_LD, R_SPARC_TLS_IE_LD }, 271 { BFD_RELOC_SPARC_TLS_IE_LDX, R_SPARC_TLS_IE_LDX }, 272 { BFD_RELOC_SPARC_TLS_IE_ADD, R_SPARC_TLS_IE_ADD }, 273 { BFD_RELOC_SPARC_TLS_LE_HIX22, R_SPARC_TLS_LE_HIX22 }, 274 { BFD_RELOC_SPARC_TLS_LE_LOX10, R_SPARC_TLS_LE_LOX10 }, 275 { BFD_RELOC_SPARC_TLS_DTPMOD32, R_SPARC_TLS_DTPMOD32 }, 276 { BFD_RELOC_SPARC_TLS_DTPMOD64, R_SPARC_TLS_DTPMOD64 }, 277 { BFD_RELOC_SPARC_TLS_DTPOFF32, R_SPARC_TLS_DTPOFF32 }, 278 { BFD_RELOC_SPARC_TLS_DTPOFF64, R_SPARC_TLS_DTPOFF64 }, 279 { BFD_RELOC_SPARC_TLS_TPOFF32, R_SPARC_TLS_TPOFF32 }, 280 { BFD_RELOC_SPARC_TLS_TPOFF64, R_SPARC_TLS_TPOFF64 }, 281#ifndef SPARC64_OLD_RELOCS 282 { BFD_RELOC_SPARC_PLT32, R_SPARC_PLT32 }, 283#endif 284 { BFD_RELOC_SPARC_PLT64, R_SPARC_PLT64 }, 285 { BFD_RELOC_SPARC_HIX22, R_SPARC_HIX22 }, 286 { BFD_RELOC_SPARC_LOX10, R_SPARC_LOX10 }, 287 { BFD_RELOC_SPARC_H44, R_SPARC_H44 }, 288 { BFD_RELOC_SPARC_M44, R_SPARC_M44 }, 289 { BFD_RELOC_SPARC_L44, R_SPARC_L44 }, 290 { BFD_RELOC_SPARC_REGISTER, R_SPARC_REGISTER } 291}; 292 293static reloc_howto_type * 294sparc64_elf_reloc_type_lookup (abfd, code) 295 bfd *abfd ATTRIBUTE_UNUSED; 296 bfd_reloc_code_real_type code; 297{ 298 unsigned int i; 299 for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); i++) 300 { 301 if (sparc_reloc_map[i].bfd_reloc_val == code) 302 return &sparc64_elf_howto_table[(int) sparc_reloc_map[i].elf_reloc_val]; 303 } 304 return 0; 305} 306 307static void 308sparc64_elf_info_to_howto (abfd, cache_ptr, dst) 309 bfd *abfd ATTRIBUTE_UNUSED; 310 arelent *cache_ptr; 311 Elf_Internal_Rela *dst; 312{ 313 BFD_ASSERT (ELF64_R_TYPE_ID (dst->r_info) < (unsigned int) R_SPARC_max_std); 314 cache_ptr->howto = &sparc64_elf_howto_table[ELF64_R_TYPE_ID (dst->r_info)]; 315} 316 317struct sparc64_elf_section_data 318{ 319 struct bfd_elf_section_data elf; 320 unsigned int do_relax, reloc_count; 321}; 322 323#define sec_do_relax(sec) \ 324 ((struct sparc64_elf_section_data *) elf_section_data (sec))->do_relax 325#define canon_reloc_count(sec) \ 326 ((struct sparc64_elf_section_data *) elf_section_data (sec))->reloc_count 327 328/* Due to the way how we handle R_SPARC_OLO10, each entry in a SHT_RELA 329 section can represent up to two relocs, we must tell the user to allocate 330 more space. */ 331 332static long 333sparc64_elf_get_reloc_upper_bound (abfd, sec) 334 bfd *abfd ATTRIBUTE_UNUSED; 335 asection *sec; 336{ 337 return (sec->reloc_count * 2 + 1) * sizeof (arelent *); 338} 339 340static long 341sparc64_elf_get_dynamic_reloc_upper_bound (abfd) 342 bfd *abfd; 343{ 344 return _bfd_elf_get_dynamic_reloc_upper_bound (abfd) * 2; 345} 346 347/* Read relocations for ASECT from REL_HDR. There are RELOC_COUNT of 348 them. We cannot use generic elf routines for this, because R_SPARC_OLO10 349 has secondary addend in ELF64_R_TYPE_DATA. We handle it as two relocations 350 for the same location, R_SPARC_LO10 and R_SPARC_13. */ 351 352static bfd_boolean 353sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr, symbols, dynamic) 354 bfd *abfd; 355 asection *asect; 356 Elf_Internal_Shdr *rel_hdr; 357 asymbol **symbols; 358 bfd_boolean dynamic; 359{ 360 PTR allocated = NULL; 361 bfd_byte *native_relocs; 362 arelent *relent; 363 unsigned int i; 364 int entsize; 365 bfd_size_type count; 366 arelent *relents; 367 368 allocated = (PTR) bfd_malloc (rel_hdr->sh_size); 369 if (allocated == NULL) 370 goto error_return; 371 372 if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0 373 || bfd_bread (allocated, rel_hdr->sh_size, abfd) != rel_hdr->sh_size) 374 goto error_return; 375 376 native_relocs = (bfd_byte *) allocated; 377 378 relents = asect->relocation + canon_reloc_count (asect); 379 380 entsize = rel_hdr->sh_entsize; 381 BFD_ASSERT (entsize == sizeof (Elf64_External_Rela)); 382 383 count = rel_hdr->sh_size / entsize; 384 385 for (i = 0, relent = relents; i < count; 386 i++, relent++, native_relocs += entsize) 387 { 388 Elf_Internal_Rela rela; 389 390 bfd_elf64_swap_reloca_in (abfd, native_relocs, &rela); 391 392 /* The address of an ELF reloc is section relative for an object 393 file, and absolute for an executable file or shared library. 394 The address of a normal BFD reloc is always section relative, 395 and the address of a dynamic reloc is absolute.. */ 396 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 || dynamic) 397 relent->address = rela.r_offset; 398 else 399 relent->address = rela.r_offset - asect->vma; 400 401 if (ELF64_R_SYM (rela.r_info) == 0) 402 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; 403 else 404 { 405 asymbol **ps, *s; 406 407 ps = symbols + ELF64_R_SYM (rela.r_info) - 1; 408 s = *ps; 409 410 /* Canonicalize ELF section symbols. FIXME: Why? */ 411 if ((s->flags & BSF_SECTION_SYM) == 0) 412 relent->sym_ptr_ptr = ps; 413 else 414 relent->sym_ptr_ptr = s->section->symbol_ptr_ptr; 415 } 416 417 relent->addend = rela.r_addend; 418 419 BFD_ASSERT (ELF64_R_TYPE_ID (rela.r_info) < (unsigned int) R_SPARC_max_std); 420 if (ELF64_R_TYPE_ID (rela.r_info) == R_SPARC_OLO10) 421 { 422 relent->howto = &sparc64_elf_howto_table[R_SPARC_LO10]; 423 relent[1].address = relent->address; 424 relent++; 425 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; 426 relent->addend = ELF64_R_TYPE_DATA (rela.r_info); 427 relent->howto = &sparc64_elf_howto_table[R_SPARC_13]; 428 } 429 else 430 relent->howto = &sparc64_elf_howto_table[ELF64_R_TYPE_ID (rela.r_info)]; 431 } 432 433 canon_reloc_count (asect) += relent - relents; 434 435 if (allocated != NULL) 436 free (allocated); 437 438 return TRUE; 439 440 error_return: 441 if (allocated != NULL) 442 free (allocated); 443 return FALSE; 444} 445 446/* Read in and swap the external relocs. */ 447 448static bfd_boolean 449sparc64_elf_slurp_reloc_table (abfd, asect, symbols, dynamic) 450 bfd *abfd; 451 asection *asect; 452 asymbol **symbols; 453 bfd_boolean dynamic; 454{ 455 struct bfd_elf_section_data * const d = elf_section_data (asect); 456 Elf_Internal_Shdr *rel_hdr; 457 Elf_Internal_Shdr *rel_hdr2; 458 bfd_size_type amt; 459 460 if (asect->relocation != NULL) 461 return TRUE; 462 463 if (! dynamic) 464 { 465 if ((asect->flags & SEC_RELOC) == 0 466 || asect->reloc_count == 0) 467 return TRUE; 468 469 rel_hdr = &d->rel_hdr; 470 rel_hdr2 = d->rel_hdr2; 471 472 BFD_ASSERT (asect->rel_filepos == rel_hdr->sh_offset 473 || (rel_hdr2 && asect->rel_filepos == rel_hdr2->sh_offset)); 474 } 475 else 476 { 477 /* Note that ASECT->RELOC_COUNT tends not to be accurate in this 478 case because relocations against this section may use the 479 dynamic symbol table, and in that case bfd_section_from_shdr 480 in elf.c does not update the RELOC_COUNT. */ 481 if (asect->_raw_size == 0) 482 return TRUE; 483 484 rel_hdr = &d->this_hdr; 485 asect->reloc_count = NUM_SHDR_ENTRIES (rel_hdr); 486 rel_hdr2 = NULL; 487 } 488 489 amt = asect->reloc_count; 490 amt *= 2 * sizeof (arelent); 491 asect->relocation = (arelent *) bfd_alloc (abfd, amt); 492 if (asect->relocation == NULL) 493 return FALSE; 494 495 /* The sparc64_elf_slurp_one_reloc_table routine increments 496 canon_reloc_count. */ 497 canon_reloc_count (asect) = 0; 498 499 if (!sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr, symbols, 500 dynamic)) 501 return FALSE; 502 503 if (rel_hdr2 504 && !sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr2, symbols, 505 dynamic)) 506 return FALSE; 507 508 return TRUE; 509} 510 511/* Canonicalize the relocs. */ 512 513static long 514sparc64_elf_canonicalize_reloc (abfd, section, relptr, symbols) 515 bfd *abfd; 516 sec_ptr section; 517 arelent **relptr; 518 asymbol **symbols; 519{ 520 arelent *tblptr; 521 unsigned int i; 522 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 523 524 if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE)) 525 return -1; 526 527 tblptr = section->relocation; 528 for (i = 0; i < canon_reloc_count (section); i++) 529 *relptr++ = tblptr++; 530 531 *relptr = NULL; 532 533 return canon_reloc_count (section); 534} 535 536 537/* Canonicalize the dynamic relocation entries. Note that we return 538 the dynamic relocations as a single block, although they are 539 actually associated with particular sections; the interface, which 540 was designed for SunOS style shared libraries, expects that there 541 is only one set of dynamic relocs. Any section that was actually 542 installed in the BFD, and has type SHT_REL or SHT_RELA, and uses 543 the dynamic symbol table, is considered to be a dynamic reloc 544 section. */ 545 546static long 547sparc64_elf_canonicalize_dynamic_reloc (abfd, storage, syms) 548 bfd *abfd; 549 arelent **storage; 550 asymbol **syms; 551{ 552 asection *s; 553 long ret; 554 555 if (elf_dynsymtab (abfd) == 0) 556 { 557 bfd_set_error (bfd_error_invalid_operation); 558 return -1; 559 } 560 561 ret = 0; 562 for (s = abfd->sections; s != NULL; s = s->next) 563 { 564 if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) 565 && (elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) 566 { 567 arelent *p; 568 long count, i; 569 570 if (! sparc64_elf_slurp_reloc_table (abfd, s, syms, TRUE)) 571 return -1; 572 count = canon_reloc_count (s); 573 p = s->relocation; 574 for (i = 0; i < count; i++) 575 *storage++ = p++; 576 ret += count; 577 } 578 } 579 580 *storage = NULL; 581 582 return ret; 583} 584 585/* Write out the relocs. */ 586 587static void 588sparc64_elf_write_relocs (abfd, sec, data) 589 bfd *abfd; 590 asection *sec; 591 PTR data; 592{ 593 bfd_boolean *failedp = (bfd_boolean *) data; 594 Elf_Internal_Shdr *rela_hdr; 595 Elf64_External_Rela *outbound_relocas, *src_rela; 596 unsigned int idx, count; 597 asymbol *last_sym = 0; 598 int last_sym_idx = 0; 599 600 /* If we have already failed, don't do anything. */ 601 if (*failedp) 602 return; 603 604 if ((sec->flags & SEC_RELOC) == 0) 605 return; 606 607 /* The linker backend writes the relocs out itself, and sets the 608 reloc_count field to zero to inhibit writing them here. Also, 609 sometimes the SEC_RELOC flag gets set even when there aren't any 610 relocs. */ 611 if (sec->reloc_count == 0) 612 return; 613 614 /* We can combine two relocs that refer to the same address 615 into R_SPARC_OLO10 if first one is R_SPARC_LO10 and the 616 latter is R_SPARC_13 with no associated symbol. */ 617 count = 0; 618 for (idx = 0; idx < sec->reloc_count; idx++) 619 { 620 bfd_vma addr; 621 622 ++count; 623 624 addr = sec->orelocation[idx]->address; 625 if (sec->orelocation[idx]->howto->type == R_SPARC_LO10 626 && idx < sec->reloc_count - 1) 627 { 628 arelent *r = sec->orelocation[idx + 1]; 629 630 if (r->howto->type == R_SPARC_13 631 && r->address == addr 632 && bfd_is_abs_section ((*r->sym_ptr_ptr)->section) 633 && (*r->sym_ptr_ptr)->value == 0) 634 ++idx; 635 } 636 } 637 638 rela_hdr = &elf_section_data (sec)->rel_hdr; 639 640 rela_hdr->sh_size = rela_hdr->sh_entsize * count; 641 rela_hdr->contents = (PTR) bfd_alloc (abfd, rela_hdr->sh_size); 642 if (rela_hdr->contents == NULL) 643 { 644 *failedp = TRUE; 645 return; 646 } 647 648 /* Figure out whether the relocations are RELA or REL relocations. */ 649 if (rela_hdr->sh_type != SHT_RELA) 650 abort (); 651 652 /* orelocation has the data, reloc_count has the count... */ 653 outbound_relocas = (Elf64_External_Rela *) rela_hdr->contents; 654 src_rela = outbound_relocas; 655 656 for (idx = 0; idx < sec->reloc_count; idx++) 657 { 658 Elf_Internal_Rela dst_rela; 659 arelent *ptr; 660 asymbol *sym; 661 int n; 662 663 ptr = sec->orelocation[idx]; 664 665 /* The address of an ELF reloc is section relative for an object 666 file, and absolute for an executable file or shared library. 667 The address of a BFD reloc is always section relative. */ 668 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) 669 dst_rela.r_offset = ptr->address; 670 else 671 dst_rela.r_offset = ptr->address + sec->vma; 672 673 sym = *ptr->sym_ptr_ptr; 674 if (sym == last_sym) 675 n = last_sym_idx; 676 else if (bfd_is_abs_section (sym->section) && sym->value == 0) 677 n = STN_UNDEF; 678 else 679 { 680 last_sym = sym; 681 n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym); 682 if (n < 0) 683 { 684 *failedp = TRUE; 685 return; 686 } 687 last_sym_idx = n; 688 } 689 690 if ((*ptr->sym_ptr_ptr)->the_bfd != NULL 691 && (*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec 692 && ! _bfd_elf_validate_reloc (abfd, ptr)) 693 { 694 *failedp = TRUE; 695 return; 696 } 697 698 if (ptr->howto->type == R_SPARC_LO10 699 && idx < sec->reloc_count - 1) 700 { 701 arelent *r = sec->orelocation[idx + 1]; 702 703 if (r->howto->type == R_SPARC_13 704 && r->address == ptr->address 705 && bfd_is_abs_section ((*r->sym_ptr_ptr)->section) 706 && (*r->sym_ptr_ptr)->value == 0) 707 { 708 idx++; 709 dst_rela.r_info 710 = ELF64_R_INFO (n, ELF64_R_TYPE_INFO (r->addend, 711 R_SPARC_OLO10)); 712 } 713 else 714 dst_rela.r_info = ELF64_R_INFO (n, R_SPARC_LO10); 715 } 716 else 717 dst_rela.r_info = ELF64_R_INFO (n, ptr->howto->type); 718 719 dst_rela.r_addend = ptr->addend; 720 bfd_elf64_swap_reloca_out (abfd, &dst_rela, (bfd_byte *) src_rela); 721 ++src_rela; 722 } 723} 724 725/* Sparc64 ELF linker hash table. */ 726 727struct sparc64_elf_app_reg 728{ 729 unsigned char bind; 730 unsigned short shndx; 731 bfd *abfd; 732 char *name; 733}; 734 735struct sparc64_elf_link_hash_table 736{ 737 struct elf_link_hash_table root; 738 739 struct sparc64_elf_app_reg app_regs [4]; 740}; 741 742/* Get the Sparc64 ELF linker hash table from a link_info structure. */ 743 744#define sparc64_elf_hash_table(p) \ 745 ((struct sparc64_elf_link_hash_table *) ((p)->hash)) 746 747/* Create a Sparc64 ELF linker hash table. */ 748 749static struct bfd_link_hash_table * 750sparc64_elf_bfd_link_hash_table_create (abfd) 751 bfd *abfd; 752{ 753 struct sparc64_elf_link_hash_table *ret; 754 bfd_size_type amt = sizeof (struct sparc64_elf_link_hash_table); 755 756 ret = (struct sparc64_elf_link_hash_table *) bfd_zmalloc (amt); 757 if (ret == (struct sparc64_elf_link_hash_table *) NULL) 758 return NULL; 759 760 if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, 761 _bfd_elf_link_hash_newfunc)) 762 { 763 free (ret); 764 return NULL; 765 } 766 767 return &ret->root.root; 768} 769 770/* Utility for performing the standard initial work of an instruction 771 relocation. 772 *PRELOCATION will contain the relocated item. 773 *PINSN will contain the instruction from the input stream. 774 If the result is `bfd_reloc_other' the caller can continue with 775 performing the relocation. Otherwise it must stop and return the 776 value to its caller. */ 777 778static bfd_reloc_status_type 779init_insn_reloc (abfd, 780 reloc_entry, 781 symbol, 782 data, 783 input_section, 784 output_bfd, 785 prelocation, 786 pinsn) 787 bfd *abfd; 788 arelent *reloc_entry; 789 asymbol *symbol; 790 PTR data; 791 asection *input_section; 792 bfd *output_bfd; 793 bfd_vma *prelocation; 794 bfd_vma *pinsn; 795{ 796 bfd_vma relocation; 797 reloc_howto_type *howto = reloc_entry->howto; 798 799 if (output_bfd != (bfd *) NULL 800 && (symbol->flags & BSF_SECTION_SYM) == 0 801 && (! howto->partial_inplace 802 || reloc_entry->addend == 0)) 803 { 804 reloc_entry->address += input_section->output_offset; 805 return bfd_reloc_ok; 806 } 807 808 /* This works because partial_inplace is FALSE. */ 809 if (output_bfd != NULL) 810 return bfd_reloc_continue; 811 812 if (reloc_entry->address > input_section->_cooked_size) 813 return bfd_reloc_outofrange; 814 815 relocation = (symbol->value 816 + symbol->section->output_section->vma 817 + symbol->section->output_offset); 818 relocation += reloc_entry->addend; 819 if (howto->pc_relative) 820 { 821 relocation -= (input_section->output_section->vma 822 + input_section->output_offset); 823 relocation -= reloc_entry->address; 824 } 825 826 *prelocation = relocation; 827 *pinsn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); 828 return bfd_reloc_other; 829} 830 831/* For unsupported relocs. */ 832 833static bfd_reloc_status_type 834sparc_elf_notsup_reloc (abfd, 835 reloc_entry, 836 symbol, 837 data, 838 input_section, 839 output_bfd, 840 error_message) 841 bfd *abfd ATTRIBUTE_UNUSED; 842 arelent *reloc_entry ATTRIBUTE_UNUSED; 843 asymbol *symbol ATTRIBUTE_UNUSED; 844 PTR data ATTRIBUTE_UNUSED; 845 asection *input_section ATTRIBUTE_UNUSED; 846 bfd *output_bfd ATTRIBUTE_UNUSED; 847 char **error_message ATTRIBUTE_UNUSED; 848{ 849 return bfd_reloc_notsupported; 850} 851 852/* Handle the WDISP16 reloc. */ 853 854static bfd_reloc_status_type 855sparc_elf_wdisp16_reloc (abfd, reloc_entry, symbol, data, input_section, 856 output_bfd, error_message) 857 bfd *abfd; 858 arelent *reloc_entry; 859 asymbol *symbol; 860 PTR data; 861 asection *input_section; 862 bfd *output_bfd; 863 char **error_message ATTRIBUTE_UNUSED; 864{ 865 bfd_vma relocation; 866 bfd_vma insn; 867 bfd_reloc_status_type status; 868 869 status = init_insn_reloc (abfd, reloc_entry, symbol, data, 870 input_section, output_bfd, &relocation, &insn); 871 if (status != bfd_reloc_other) 872 return status; 873 874 insn &= ~ (bfd_vma) 0x303fff; 875 insn |= (((relocation >> 2) & 0xc000) << 6) | ((relocation >> 2) & 0x3fff); 876 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); 877 878 if ((bfd_signed_vma) relocation < - 0x40000 879 || (bfd_signed_vma) relocation > 0x3ffff) 880 return bfd_reloc_overflow; 881 else 882 return bfd_reloc_ok; 883} 884 885/* Handle the HIX22 reloc. */ 886 887static bfd_reloc_status_type 888sparc_elf_hix22_reloc (abfd, 889 reloc_entry, 890 symbol, 891 data, 892 input_section, 893 output_bfd, 894 error_message) 895 bfd *abfd; 896 arelent *reloc_entry; 897 asymbol *symbol; 898 PTR data; 899 asection *input_section; 900 bfd *output_bfd; 901 char **error_message ATTRIBUTE_UNUSED; 902{ 903 bfd_vma relocation; 904 bfd_vma insn; 905 bfd_reloc_status_type status; 906 907 status = init_insn_reloc (abfd, reloc_entry, symbol, data, 908 input_section, output_bfd, &relocation, &insn); 909 if (status != bfd_reloc_other) 910 return status; 911 912 relocation ^= MINUS_ONE; 913 insn = (insn &~ (bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff); 914 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); 915 916 if ((relocation & ~ (bfd_vma) 0xffffffff) != 0) 917 return bfd_reloc_overflow; 918 else 919 return bfd_reloc_ok; 920} 921 922/* Handle the LOX10 reloc. */ 923 924static bfd_reloc_status_type 925sparc_elf_lox10_reloc (abfd, 926 reloc_entry, 927 symbol, 928 data, 929 input_section, 930 output_bfd, 931 error_message) 932 bfd *abfd; 933 arelent *reloc_entry; 934 asymbol *symbol; 935 PTR data; 936 asection *input_section; 937 bfd *output_bfd; 938 char **error_message ATTRIBUTE_UNUSED; 939{ 940 bfd_vma relocation; 941 bfd_vma insn; 942 bfd_reloc_status_type status; 943 944 status = init_insn_reloc (abfd, reloc_entry, symbol, data, 945 input_section, output_bfd, &relocation, &insn); 946 if (status != bfd_reloc_other) 947 return status; 948 949 insn = (insn &~ (bfd_vma) 0x1fff) | 0x1c00 | (relocation & 0x3ff); 950 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); 951 952 return bfd_reloc_ok; 953} 954 955/* PLT/GOT stuff */ 956 957/* Both the headers and the entries are icache aligned. */ 958#define PLT_ENTRY_SIZE 32 959#define PLT_HEADER_SIZE (4 * PLT_ENTRY_SIZE) 960#define LARGE_PLT_THRESHOLD 32768 961#define GOT_RESERVED_ENTRIES 1 962 963#define ELF_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1" 964 965/* Fill in the .plt section. */ 966 967static void 968sparc64_elf_build_plt (output_bfd, contents, nentries) 969 bfd *output_bfd; 970 unsigned char *contents; 971 int nentries; 972{ 973 const unsigned int nop = 0x01000000; 974 int i, j; 975 976 /* The first four entries are reserved, and are initially undefined. 977 We fill them with `illtrap 0' to force ld.so to do something. */ 978 979 for (i = 0; i < PLT_HEADER_SIZE/4; ++i) 980 bfd_put_32 (output_bfd, (bfd_vma) 0, contents+i*4); 981 982 /* The first 32768 entries are close enough to plt1 to get there via 983 a straight branch. */ 984 985 for (i = 4; i < LARGE_PLT_THRESHOLD && i < nentries; ++i) 986 { 987 unsigned char *entry = contents + i * PLT_ENTRY_SIZE; 988 unsigned int sethi, ba; 989 990 /* sethi (. - plt0), %g1 */ 991 sethi = 0x03000000 | (i * PLT_ENTRY_SIZE); 992 993 /* ba,a,pt %xcc, plt1 */ 994 ba = 0x30680000 | (((contents+PLT_ENTRY_SIZE) - (entry+4)) / 4 & 0x7ffff); 995 996 bfd_put_32 (output_bfd, (bfd_vma) sethi, entry); 997 bfd_put_32 (output_bfd, (bfd_vma) ba, entry + 4); 998 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 8); 999 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 12); 1000 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 16); 1001 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 20); 1002 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 24); 1003 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 28); 1004 } 1005 1006 /* Now the tricky bit. Entries 32768 and higher are grouped in blocks of 1007 160: 160 entries and 160 pointers. This is to separate code from data, 1008 which is much friendlier on the cache. */ 1009 1010 for (; i < nentries; i += 160) 1011 { 1012 int block = (i + 160 <= nentries ? 160 : nentries - i); 1013 for (j = 0; j < block; ++j) 1014 { 1015 unsigned char *entry, *ptr; 1016 unsigned int ldx; 1017 1018 entry = contents + i*PLT_ENTRY_SIZE + j*4*6; 1019 ptr = contents + i*PLT_ENTRY_SIZE + block*4*6 + j*8; 1020 1021 /* ldx [%o7 + ptr - (entry+4)], %g1 */ 1022 ldx = 0xc25be000 | ((ptr - (entry+4)) & 0x1fff); 1023 1024 /* mov %o7,%g5 1025 call .+8 1026 nop 1027 ldx [%o7+P],%g1 1028 jmpl %o7+%g1,%g1 1029 mov %g5,%o7 */ 1030 bfd_put_32 (output_bfd, (bfd_vma) 0x8a10000f, entry); 1031 bfd_put_32 (output_bfd, (bfd_vma) 0x40000002, entry + 4); 1032 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 8); 1033 bfd_put_32 (output_bfd, (bfd_vma) ldx, entry + 12); 1034 bfd_put_32 (output_bfd, (bfd_vma) 0x83c3c001, entry + 16); 1035 bfd_put_32 (output_bfd, (bfd_vma) 0x9e100005, entry + 20); 1036 1037 bfd_put_64 (output_bfd, (bfd_vma) (contents - (entry + 4)), ptr); 1038 } 1039 } 1040} 1041 1042/* Return the offset of a particular plt entry within the .plt section. */ 1043 1044static bfd_vma 1045sparc64_elf_plt_entry_offset (index) 1046 bfd_vma index; 1047{ 1048 bfd_vma block, ofs; 1049 1050 if (index < LARGE_PLT_THRESHOLD) 1051 return index * PLT_ENTRY_SIZE; 1052 1053 /* See above for details. */ 1054 1055 block = (index - LARGE_PLT_THRESHOLD) / 160; 1056 ofs = (index - LARGE_PLT_THRESHOLD) % 160; 1057 1058 return (LARGE_PLT_THRESHOLD + block * 160) * PLT_ENTRY_SIZE + ofs * 6 * 4; 1059} 1060 1061static bfd_vma 1062sparc64_elf_plt_ptr_offset (index, max) 1063 bfd_vma index; 1064 bfd_vma max; 1065{ 1066 bfd_vma block, ofs, last; 1067 1068 BFD_ASSERT(index >= LARGE_PLT_THRESHOLD); 1069 1070 /* See above for details. */ 1071 1072 block = (((index - LARGE_PLT_THRESHOLD) / 160) * 160) + LARGE_PLT_THRESHOLD; 1073 ofs = index - block; 1074 if (block + 160 > max) 1075 last = (max - LARGE_PLT_THRESHOLD) % 160; 1076 else 1077 last = 160; 1078 1079 return (block * PLT_ENTRY_SIZE 1080 + last * 6*4 1081 + ofs * 8); 1082} 1083 1084/* Look through the relocs for a section during the first phase, and 1085 allocate space in the global offset table or procedure linkage 1086 table. */ 1087 1088static bfd_boolean 1089sparc64_elf_check_relocs (abfd, info, sec, relocs) 1090 bfd *abfd; 1091 struct bfd_link_info *info; 1092 asection *sec; 1093 const Elf_Internal_Rela *relocs; 1094{ 1095 bfd *dynobj; 1096 Elf_Internal_Shdr *symtab_hdr; 1097 struct elf_link_hash_entry **sym_hashes; 1098 bfd_vma *local_got_offsets; 1099 const Elf_Internal_Rela *rel; 1100 const Elf_Internal_Rela *rel_end; 1101 asection *sgot; 1102 asection *srelgot; 1103 asection *sreloc; 1104 1105 if (info->relocatable || !(sec->flags & SEC_ALLOC)) 1106 return TRUE; 1107 1108 dynobj = elf_hash_table (info)->dynobj; 1109 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 1110 sym_hashes = elf_sym_hashes (abfd); 1111 local_got_offsets = elf_local_got_offsets (abfd); 1112 1113 sgot = NULL; 1114 srelgot = NULL; 1115 sreloc = NULL; 1116 1117 rel_end = relocs + NUM_SHDR_ENTRIES (& elf_section_data (sec)->rel_hdr); 1118 for (rel = relocs; rel < rel_end; rel++) 1119 { 1120 unsigned long r_symndx; 1121 struct elf_link_hash_entry *h; 1122 1123 r_symndx = ELF64_R_SYM (rel->r_info); 1124 if (r_symndx < symtab_hdr->sh_info) 1125 h = NULL; 1126 else 1127 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 1128 1129 switch (ELF64_R_TYPE_ID (rel->r_info)) 1130 { 1131 case R_SPARC_GOT10: 1132 case R_SPARC_GOT13: 1133 case R_SPARC_GOT22: 1134 /* This symbol requires a global offset table entry. */ 1135 1136 if (dynobj == NULL) 1137 { 1138 /* Create the .got section. */ 1139 elf_hash_table (info)->dynobj = dynobj = abfd; 1140 if (! _bfd_elf_create_got_section (dynobj, info)) 1141 return FALSE; 1142 } 1143 1144 if (sgot == NULL) 1145 { 1146 sgot = bfd_get_section_by_name (dynobj, ".got"); 1147 BFD_ASSERT (sgot != NULL); 1148 } 1149 1150 if (srelgot == NULL && (h != NULL || info->shared)) 1151 { 1152 srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); 1153 if (srelgot == NULL) 1154 { 1155 srelgot = bfd_make_section (dynobj, ".rela.got"); 1156 if (srelgot == NULL 1157 || ! bfd_set_section_flags (dynobj, srelgot, 1158 (SEC_ALLOC 1159 | SEC_LOAD 1160 | SEC_HAS_CONTENTS 1161 | SEC_IN_MEMORY 1162 | SEC_LINKER_CREATED 1163 | SEC_READONLY)) 1164 || ! bfd_set_section_alignment (dynobj, srelgot, 3)) 1165 return FALSE; 1166 } 1167 } 1168 1169 if (h != NULL) 1170 { 1171 if (h->got.offset != (bfd_vma) -1) 1172 { 1173 /* We have already allocated space in the .got. */ 1174 break; 1175 } 1176 h->got.offset = sgot->_raw_size; 1177 1178 /* Make sure this symbol is output as a dynamic symbol. */ 1179 if (h->dynindx == -1) 1180 { 1181 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 1182 return FALSE; 1183 } 1184 1185 srelgot->_raw_size += sizeof (Elf64_External_Rela); 1186 } 1187 else 1188 { 1189 /* This is a global offset table entry for a local 1190 symbol. */ 1191 if (local_got_offsets == NULL) 1192 { 1193 bfd_size_type size; 1194 register unsigned int i; 1195 1196 size = symtab_hdr->sh_info; 1197 size *= sizeof (bfd_vma); 1198 local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size); 1199 if (local_got_offsets == NULL) 1200 return FALSE; 1201 elf_local_got_offsets (abfd) = local_got_offsets; 1202 for (i = 0; i < symtab_hdr->sh_info; i++) 1203 local_got_offsets[i] = (bfd_vma) -1; 1204 } 1205 if (local_got_offsets[r_symndx] != (bfd_vma) -1) 1206 { 1207 /* We have already allocated space in the .got. */ 1208 break; 1209 } 1210 local_got_offsets[r_symndx] = sgot->_raw_size; 1211 1212 if (info->shared) 1213 { 1214 /* If we are generating a shared object, we need to 1215 output a R_SPARC_RELATIVE reloc so that the 1216 dynamic linker can adjust this GOT entry. */ 1217 srelgot->_raw_size += sizeof (Elf64_External_Rela); 1218 } 1219 } 1220 1221 sgot->_raw_size += 8; 1222 1223#if 0 1224 /* Doesn't work for 64-bit -fPIC, since sethi/or builds 1225 unsigned numbers. If we permit ourselves to modify 1226 code so we get sethi/xor, this could work. 1227 Question: do we consider conditionally re-enabling 1228 this for -fpic, once we know about object code models? */ 1229 /* If the .got section is more than 0x1000 bytes, we add 1230 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13 1231 bit relocations have a greater chance of working. */ 1232 if (sgot->_raw_size >= 0x1000 1233 && elf_hash_table (info)->hgot->root.u.def.value == 0) 1234 elf_hash_table (info)->hgot->root.u.def.value = 0x1000; 1235#endif 1236 1237 break; 1238 1239 case R_SPARC_WPLT30: 1240 case R_SPARC_PLT32: 1241 case R_SPARC_HIPLT22: 1242 case R_SPARC_LOPLT10: 1243 case R_SPARC_PCPLT32: 1244 case R_SPARC_PCPLT22: 1245 case R_SPARC_PCPLT10: 1246 case R_SPARC_PLT64: 1247 /* This symbol requires a procedure linkage table entry. We 1248 actually build the entry in adjust_dynamic_symbol, 1249 because this might be a case of linking PIC code without 1250 linking in any dynamic objects, in which case we don't 1251 need to generate a procedure linkage table after all. */ 1252 1253 if (h == NULL) 1254 { 1255 /* It does not make sense to have a procedure linkage 1256 table entry for a local symbol. */ 1257 bfd_set_error (bfd_error_bad_value); 1258 return FALSE; 1259 } 1260 1261 /* Make sure this symbol is output as a dynamic symbol. */ 1262 if (h->dynindx == -1) 1263 { 1264 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 1265 return FALSE; 1266 } 1267 1268 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; 1269 if (ELF64_R_TYPE_ID (rel->r_info) != R_SPARC_PLT32 1270 && ELF64_R_TYPE_ID (rel->r_info) != R_SPARC_PLT64) 1271 break; 1272 /* Fall through. */ 1273 case R_SPARC_PC10: 1274 case R_SPARC_PC22: 1275 case R_SPARC_PC_HH22: 1276 case R_SPARC_PC_HM10: 1277 case R_SPARC_PC_LM22: 1278 if (h != NULL 1279 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 1280 break; 1281 /* Fall through. */ 1282 case R_SPARC_DISP8: 1283 case R_SPARC_DISP16: 1284 case R_SPARC_DISP32: 1285 case R_SPARC_DISP64: 1286 case R_SPARC_WDISP30: 1287 case R_SPARC_WDISP22: 1288 case R_SPARC_WDISP19: 1289 case R_SPARC_WDISP16: 1290 if (h == NULL) 1291 break; 1292 /* Fall through. */ 1293 case R_SPARC_8: 1294 case R_SPARC_16: 1295 case R_SPARC_32: 1296 case R_SPARC_HI22: 1297 case R_SPARC_22: 1298 case R_SPARC_13: 1299 case R_SPARC_LO10: 1300 case R_SPARC_UA32: 1301 case R_SPARC_10: 1302 case R_SPARC_11: 1303 case R_SPARC_64: 1304 case R_SPARC_OLO10: 1305 case R_SPARC_HH22: 1306 case R_SPARC_HM10: 1307 case R_SPARC_LM22: 1308 case R_SPARC_7: 1309 case R_SPARC_5: 1310 case R_SPARC_6: 1311 case R_SPARC_HIX22: 1312 case R_SPARC_LOX10: 1313 case R_SPARC_H44: 1314 case R_SPARC_M44: 1315 case R_SPARC_L44: 1316 case R_SPARC_UA64: 1317 case R_SPARC_UA16: 1318 /* When creating a shared object, we must copy these relocs 1319 into the output file. We create a reloc section in 1320 dynobj and make room for the reloc. 1321 1322 But don't do this for debugging sections -- this shows up 1323 with DWARF2 -- first because they are not loaded, and 1324 second because DWARF sez the debug info is not to be 1325 biased by the load address. */ 1326 if (info->shared && (sec->flags & SEC_ALLOC)) 1327 { 1328 if (sreloc == NULL) 1329 { 1330 const char *name; 1331 1332 name = (bfd_elf_string_from_elf_section 1333 (abfd, 1334 elf_elfheader (abfd)->e_shstrndx, 1335 elf_section_data (sec)->rel_hdr.sh_name)); 1336 if (name == NULL) 1337 return FALSE; 1338 1339 BFD_ASSERT (strncmp (name, ".rela", 5) == 0 1340 && strcmp (bfd_get_section_name (abfd, sec), 1341 name + 5) == 0); 1342 1343 sreloc = bfd_get_section_by_name (dynobj, name); 1344 if (sreloc == NULL) 1345 { 1346 flagword flags; 1347 1348 sreloc = bfd_make_section (dynobj, name); 1349 flags = (SEC_HAS_CONTENTS | SEC_READONLY 1350 | SEC_IN_MEMORY | SEC_LINKER_CREATED); 1351 if ((sec->flags & SEC_ALLOC) != 0) 1352 flags |= SEC_ALLOC | SEC_LOAD; 1353 if (sreloc == NULL 1354 || ! bfd_set_section_flags (dynobj, sreloc, flags) 1355 || ! bfd_set_section_alignment (dynobj, sreloc, 3)) 1356 return FALSE; 1357 } 1358 if (sec->flags & SEC_READONLY) 1359 info->flags |= DF_TEXTREL; 1360 } 1361 1362 sreloc->_raw_size += sizeof (Elf64_External_Rela); 1363 } 1364 break; 1365 1366 case R_SPARC_REGISTER: 1367 /* Nothing to do. */ 1368 break; 1369 1370 default: 1371 (*_bfd_error_handler) (_("%s: check_relocs: unhandled reloc type %d"), 1372 bfd_archive_filename (abfd), 1373 ELF64_R_TYPE_ID (rel->r_info)); 1374 return FALSE; 1375 } 1376 } 1377 1378 return TRUE; 1379} 1380 1381/* Hook called by the linker routine which adds symbols from an object 1382 file. We use it for STT_REGISTER symbols. */ 1383 1384static bfd_boolean 1385sparc64_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) 1386 bfd *abfd; 1387 struct bfd_link_info *info; 1388 Elf_Internal_Sym *sym; 1389 const char **namep; 1390 flagword *flagsp ATTRIBUTE_UNUSED; 1391 asection **secp ATTRIBUTE_UNUSED; 1392 bfd_vma *valp ATTRIBUTE_UNUSED; 1393{ 1394 static const char *const stt_types[] = { "NOTYPE", "OBJECT", "FUNCTION" }; 1395 1396 if (ELF_ST_TYPE (sym->st_info) == STT_REGISTER) 1397 { 1398 int reg; 1399 struct sparc64_elf_app_reg *p; 1400 1401 reg = (int)sym->st_value; 1402 switch (reg & ~1) 1403 { 1404 case 2: reg -= 2; break; 1405 case 6: reg -= 4; break; 1406 default: 1407 (*_bfd_error_handler) 1408 (_("%s: Only registers %%g[2367] can be declared using STT_REGISTER"), 1409 bfd_archive_filename (abfd)); 1410 return FALSE; 1411 } 1412 1413 if (info->hash->creator != abfd->xvec 1414 || (abfd->flags & DYNAMIC) != 0) 1415 { 1416 /* STT_REGISTER only works when linking an elf64_sparc object. 1417 If STT_REGISTER comes from a dynamic object, don't put it into 1418 the output bfd. The dynamic linker will recheck it. */ 1419 *namep = NULL; 1420 return TRUE; 1421 } 1422 1423 p = sparc64_elf_hash_table(info)->app_regs + reg; 1424 1425 if (p->name != NULL && strcmp (p->name, *namep)) 1426 { 1427 (*_bfd_error_handler) 1428 (_("Register %%g%d used incompatibly: %s in %s, previously %s in %s"), 1429 (int) sym->st_value, 1430 **namep ? *namep : "#scratch", bfd_archive_filename (abfd), 1431 *p->name ? p->name : "#scratch", bfd_archive_filename (p->abfd)); 1432 return FALSE; 1433 } 1434 1435 if (p->name == NULL) 1436 { 1437 if (**namep) 1438 { 1439 struct elf_link_hash_entry *h; 1440 1441 h = (struct elf_link_hash_entry *) 1442 bfd_link_hash_lookup (info->hash, *namep, FALSE, FALSE, FALSE); 1443 1444 if (h != NULL) 1445 { 1446 unsigned char type = h->type; 1447 1448 if (type > STT_FUNC) 1449 type = 0; 1450 (*_bfd_error_handler) 1451 (_("Symbol `%s' has differing types: REGISTER in %s, previously %s in %s"), 1452 *namep, bfd_archive_filename (abfd), 1453 stt_types[type], bfd_archive_filename (p->abfd)); 1454 return FALSE; 1455 } 1456 1457 p->name = bfd_hash_allocate (&info->hash->table, 1458 strlen (*namep) + 1); 1459 if (!p->name) 1460 return FALSE; 1461 1462 strcpy (p->name, *namep); 1463 } 1464 else 1465 p->name = ""; 1466 p->bind = ELF_ST_BIND (sym->st_info); 1467 p->abfd = abfd; 1468 p->shndx = sym->st_shndx; 1469 } 1470 else 1471 { 1472 if (p->bind == STB_WEAK 1473 && ELF_ST_BIND (sym->st_info) == STB_GLOBAL) 1474 { 1475 p->bind = STB_GLOBAL; 1476 p->abfd = abfd; 1477 } 1478 } 1479 *namep = NULL; 1480 return TRUE; 1481 } 1482 else if (*namep && **namep 1483 && info->hash->creator == abfd->xvec) 1484 { 1485 int i; 1486 struct sparc64_elf_app_reg *p; 1487 1488 p = sparc64_elf_hash_table(info)->app_regs; 1489 for (i = 0; i < 4; i++, p++) 1490 if (p->name != NULL && ! strcmp (p->name, *namep)) 1491 { 1492 unsigned char type = ELF_ST_TYPE (sym->st_info); 1493 1494 if (type > STT_FUNC) 1495 type = 0; 1496 (*_bfd_error_handler) 1497 (_("Symbol `%s' has differing types: %s in %s, previously REGISTER in %s"), 1498 *namep, stt_types[type], bfd_archive_filename (abfd), 1499 bfd_archive_filename (p->abfd)); 1500 return FALSE; 1501 } 1502 } 1503 return TRUE; 1504} 1505 1506/* This function takes care of emitting STT_REGISTER symbols 1507 which we cannot easily keep in the symbol hash table. */ 1508 1509static bfd_boolean 1510sparc64_elf_output_arch_syms (output_bfd, info, finfo, func) 1511 bfd *output_bfd ATTRIBUTE_UNUSED; 1512 struct bfd_link_info *info; 1513 PTR finfo; 1514 bfd_boolean (*func) 1515 PARAMS ((PTR, const char *, Elf_Internal_Sym *, asection *, 1516 struct elf_link_hash_entry *)); 1517{ 1518 int reg; 1519 struct sparc64_elf_app_reg *app_regs = 1520 sparc64_elf_hash_table(info)->app_regs; 1521 Elf_Internal_Sym sym; 1522 1523 /* We arranged in size_dynamic_sections to put the STT_REGISTER entries 1524 at the end of the dynlocal list, so they came at the end of the local 1525 symbols in the symtab. Except that they aren't STB_LOCAL, so we need 1526 to back up symtab->sh_info. */ 1527 if (elf_hash_table (info)->dynlocal) 1528 { 1529 bfd * dynobj = elf_hash_table (info)->dynobj; 1530 asection *dynsymsec = bfd_get_section_by_name (dynobj, ".dynsym"); 1531 struct elf_link_local_dynamic_entry *e; 1532 1533 for (e = elf_hash_table (info)->dynlocal; e ; e = e->next) 1534 if (e->input_indx == -1) 1535 break; 1536 if (e) 1537 { 1538 elf_section_data (dynsymsec->output_section)->this_hdr.sh_info 1539 = e->dynindx; 1540 } 1541 } 1542 1543 if (info->strip == strip_all) 1544 return TRUE; 1545 1546 for (reg = 0; reg < 4; reg++) 1547 if (app_regs [reg].name != NULL) 1548 { 1549 if (info->strip == strip_some 1550 && bfd_hash_lookup (info->keep_hash, 1551 app_regs [reg].name, 1552 FALSE, FALSE) == NULL) 1553 continue; 1554 1555 sym.st_value = reg < 2 ? reg + 2 : reg + 4; 1556 sym.st_size = 0; 1557 sym.st_other = 0; 1558 sym.st_info = ELF_ST_INFO (app_regs [reg].bind, STT_REGISTER); 1559 sym.st_shndx = app_regs [reg].shndx; 1560 if (! (*func) (finfo, app_regs [reg].name, &sym, 1561 sym.st_shndx == SHN_ABS 1562 ? bfd_abs_section_ptr : bfd_und_section_ptr, 1563 NULL)) 1564 return FALSE; 1565 } 1566 1567 return TRUE; 1568} 1569 1570static int 1571sparc64_elf_get_symbol_type (elf_sym, type) 1572 Elf_Internal_Sym * elf_sym; 1573 int type; 1574{ 1575 if (ELF_ST_TYPE (elf_sym->st_info) == STT_REGISTER) 1576 return STT_REGISTER; 1577 else 1578 return type; 1579} 1580 1581/* A STB_GLOBAL,STT_REGISTER symbol should be BSF_GLOBAL 1582 even in SHN_UNDEF section. */ 1583 1584static void 1585sparc64_elf_symbol_processing (abfd, asym) 1586 bfd *abfd ATTRIBUTE_UNUSED; 1587 asymbol *asym; 1588{ 1589 elf_symbol_type *elfsym; 1590 1591 elfsym = (elf_symbol_type *) asym; 1592 if (elfsym->internal_elf_sym.st_info 1593 == ELF_ST_INFO (STB_GLOBAL, STT_REGISTER)) 1594 { 1595 asym->flags |= BSF_GLOBAL; 1596 } 1597} 1598 1599/* Adjust a symbol defined by a dynamic object and referenced by a 1600 regular object. The current definition is in some section of the 1601 dynamic object, but we're not including those sections. We have to 1602 change the definition to something the rest of the link can 1603 understand. */ 1604 1605static bfd_boolean 1606sparc64_elf_adjust_dynamic_symbol (info, h) 1607 struct bfd_link_info *info; 1608 struct elf_link_hash_entry *h; 1609{ 1610 bfd *dynobj; 1611 asection *s; 1612 unsigned int power_of_two; 1613 1614 dynobj = elf_hash_table (info)->dynobj; 1615 1616 /* Make sure we know what is going on here. */ 1617 BFD_ASSERT (dynobj != NULL 1618 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) 1619 || h->weakdef != NULL 1620 || ((h->elf_link_hash_flags 1621 & ELF_LINK_HASH_DEF_DYNAMIC) != 0 1622 && (h->elf_link_hash_flags 1623 & ELF_LINK_HASH_REF_REGULAR) != 0 1624 && (h->elf_link_hash_flags 1625 & ELF_LINK_HASH_DEF_REGULAR) == 0))); 1626 1627 /* If this is a function, put it in the procedure linkage table. We 1628 will fill in the contents of the procedure linkage table later 1629 (although we could actually do it here). The STT_NOTYPE 1630 condition is a hack specifically for the Oracle libraries 1631 delivered for Solaris; for some inexplicable reason, they define 1632 some of their functions as STT_NOTYPE when they really should be 1633 STT_FUNC. */ 1634 if (h->type == STT_FUNC 1635 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0 1636 || (h->type == STT_NOTYPE 1637 && (h->root.type == bfd_link_hash_defined 1638 || h->root.type == bfd_link_hash_defweak) 1639 && (h->root.u.def.section->flags & SEC_CODE) != 0)) 1640 { 1641 if (! info->shared 1642 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0 1643 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0 1644 && h->root.type != bfd_link_hash_undefweak 1645 && h->root.type != bfd_link_hash_undefined) 1646 { 1647 /* This case can occur if we saw a WPLT30 reloc in an input 1648 file, but none of the input files were dynamic objects. 1649 In such a case, we don't actually need to build a 1650 procedure linkage table, and we can just do a WDISP30 1651 reloc instead. */ 1652 BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0); 1653 return TRUE; 1654 } 1655 1656 s = bfd_get_section_by_name (dynobj, ".plt"); 1657 BFD_ASSERT (s != NULL); 1658 1659 /* The first four bit in .plt is reserved. */ 1660 if (s->_raw_size == 0) 1661 s->_raw_size = PLT_HEADER_SIZE; 1662 1663 /* To simplify matters later, just store the plt index here. */ 1664 h->plt.offset = s->_raw_size / PLT_ENTRY_SIZE; 1665 1666 /* If this symbol is not defined in a regular file, and we are 1667 not generating a shared library, then set the symbol to this 1668 location in the .plt. This is required to make function 1669 pointers compare as equal between the normal executable and 1670 the shared library. */ 1671 if (! info->shared 1672 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) 1673 { 1674 h->root.u.def.section = s; 1675 h->root.u.def.value = sparc64_elf_plt_entry_offset (h->plt.offset); 1676 } 1677 1678 /* Make room for this entry. */ 1679 s->_raw_size += PLT_ENTRY_SIZE; 1680 1681 /* We also need to make an entry in the .rela.plt section. */ 1682 1683 s = bfd_get_section_by_name (dynobj, ".rela.plt"); 1684 BFD_ASSERT (s != NULL); 1685 1686 s->_raw_size += sizeof (Elf64_External_Rela); 1687 1688 /* The procedure linkage table size is bounded by the magnitude 1689 of the offset we can describe in the entry. */ 1690 if (s->_raw_size >= (bfd_vma)1 << 32) 1691 { 1692 bfd_set_error (bfd_error_bad_value); 1693 return FALSE; 1694 } 1695 1696 return TRUE; 1697 } 1698 1699 /* If this is a weak symbol, and there is a real definition, the 1700 processor independent code will have arranged for us to see the 1701 real definition first, and we can just use the same value. */ 1702 if (h->weakdef != NULL) 1703 { 1704 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined 1705 || h->weakdef->root.type == bfd_link_hash_defweak); 1706 h->root.u.def.section = h->weakdef->root.u.def.section; 1707 h->root.u.def.value = h->weakdef->root.u.def.value; 1708 return TRUE; 1709 } 1710 1711 /* This is a reference to a symbol defined by a dynamic object which 1712 is not a function. */ 1713 1714 /* If we are creating a shared library, we must presume that the 1715 only references to the symbol are via the global offset table. 1716 For such cases we need not do anything here; the relocations will 1717 be handled correctly by relocate_section. */ 1718 if (info->shared) 1719 return TRUE; 1720 1721 /* We must allocate the symbol in our .dynbss section, which will 1722 become part of the .bss section of the executable. There will be 1723 an entry for this symbol in the .dynsym section. The dynamic 1724 object will contain position independent code, so all references 1725 from the dynamic object to this symbol will go through the global 1726 offset table. The dynamic linker will use the .dynsym entry to 1727 determine the address it must put in the global offset table, so 1728 both the dynamic object and the regular object will refer to the 1729 same memory location for the variable. */ 1730 1731 s = bfd_get_section_by_name (dynobj, ".dynbss"); 1732 BFD_ASSERT (s != NULL); 1733 1734 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker 1735 to copy the initial value out of the dynamic object and into the 1736 runtime process image. We need to remember the offset into the 1737 .rel.bss section we are going to use. */ 1738 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) 1739 { 1740 asection *srel; 1741 1742 srel = bfd_get_section_by_name (dynobj, ".rela.bss"); 1743 BFD_ASSERT (srel != NULL); 1744 srel->_raw_size += sizeof (Elf64_External_Rela); 1745 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; 1746 } 1747 1748 /* We need to figure out the alignment required for this symbol. I 1749 have no idea how ELF linkers handle this. 16-bytes is the size 1750 of the largest type that requires hard alignment -- long double. */ 1751 power_of_two = bfd_log2 (h->size); 1752 if (power_of_two > 4) 1753 power_of_two = 4; 1754 1755 /* Apply the required alignment. */ 1756 s->_raw_size = BFD_ALIGN (s->_raw_size, 1757 (bfd_size_type) (1 << power_of_two)); 1758 if (power_of_two > bfd_get_section_alignment (dynobj, s)) 1759 { 1760 if (! bfd_set_section_alignment (dynobj, s, power_of_two)) 1761 return FALSE; 1762 } 1763 1764 /* Define the symbol as being at this point in the section. */ 1765 h->root.u.def.section = s; 1766 h->root.u.def.value = s->_raw_size; 1767 1768 /* Increment the section size to make room for the symbol. */ 1769 s->_raw_size += h->size; 1770 1771 return TRUE; 1772} 1773 1774/* Set the sizes of the dynamic sections. */ 1775 1776static bfd_boolean 1777sparc64_elf_size_dynamic_sections (output_bfd, info) 1778 bfd *output_bfd; 1779 struct bfd_link_info *info; 1780{ 1781 bfd *dynobj; 1782 asection *s; 1783 bfd_boolean relplt; 1784 1785 dynobj = elf_hash_table (info)->dynobj; 1786 BFD_ASSERT (dynobj != NULL); 1787 1788 if (elf_hash_table (info)->dynamic_sections_created) 1789 { 1790 /* Set the contents of the .interp section to the interpreter. */ 1791 if (info->executable) 1792 { 1793 s = bfd_get_section_by_name (dynobj, ".interp"); 1794 BFD_ASSERT (s != NULL); 1795 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; 1796 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; 1797 } 1798 } 1799 else 1800 { 1801 /* We may have created entries in the .rela.got section. 1802 However, if we are not creating the dynamic sections, we will 1803 not actually use these entries. Reset the size of .rela.got, 1804 which will cause it to get stripped from the output file 1805 below. */ 1806 s = bfd_get_section_by_name (dynobj, ".rela.got"); 1807 if (s != NULL) 1808 s->_raw_size = 0; 1809 } 1810 1811 /* The check_relocs and adjust_dynamic_symbol entry points have 1812 determined the sizes of the various dynamic sections. Allocate 1813 memory for them. */ 1814 relplt = FALSE; 1815 for (s = dynobj->sections; s != NULL; s = s->next) 1816 { 1817 const char *name; 1818 bfd_boolean strip; 1819 1820 if ((s->flags & SEC_LINKER_CREATED) == 0) 1821 continue; 1822 1823 /* It's OK to base decisions on the section name, because none 1824 of the dynobj section names depend upon the input files. */ 1825 name = bfd_get_section_name (dynobj, s); 1826 1827 strip = FALSE; 1828 1829 if (strncmp (name, ".rela", 5) == 0) 1830 { 1831 if (s->_raw_size == 0) 1832 { 1833 /* If we don't need this section, strip it from the 1834 output file. This is to handle .rela.bss and 1835 .rel.plt. We must create it in 1836 create_dynamic_sections, because it must be created 1837 before the linker maps input sections to output 1838 sections. The linker does that before 1839 adjust_dynamic_symbol is called, and it is that 1840 function which decides whether anything needs to go 1841 into these sections. */ 1842 strip = TRUE; 1843 } 1844 else 1845 { 1846 if (strcmp (name, ".rela.plt") == 0) 1847 relplt = TRUE; 1848 1849 /* We use the reloc_count field as a counter if we need 1850 to copy relocs into the output file. */ 1851 s->reloc_count = 0; 1852 } 1853 } 1854 else if (strcmp (name, ".plt") != 0 1855 && strncmp (name, ".got", 4) != 0) 1856 { 1857 /* It's not one of our sections, so don't allocate space. */ 1858 continue; 1859 } 1860 1861 if (strip) 1862 { 1863 _bfd_strip_section_from_output (info, s); 1864 continue; 1865 } 1866 1867 /* Allocate memory for the section contents. Zero the memory 1868 for the benefit of .rela.plt, which has 4 unused entries 1869 at the beginning, and we don't want garbage. */ 1870 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); 1871 if (s->contents == NULL && s->_raw_size != 0) 1872 return FALSE; 1873 } 1874 1875 if (elf_hash_table (info)->dynamic_sections_created) 1876 { 1877 /* Add some entries to the .dynamic section. We fill in the 1878 values later, in sparc64_elf_finish_dynamic_sections, but we 1879 must add the entries now so that we get the correct size for 1880 the .dynamic section. The DT_DEBUG entry is filled in by the 1881 dynamic linker and used by the debugger. */ 1882#define add_dynamic_entry(TAG, VAL) \ 1883 _bfd_elf_add_dynamic_entry (info, TAG, VAL) 1884 1885 int reg; 1886 struct sparc64_elf_app_reg * app_regs; 1887 struct elf_strtab_hash *dynstr; 1888 struct elf_link_hash_table *eht = elf_hash_table (info); 1889 1890 if (info->executable) 1891 { 1892 if (!add_dynamic_entry (DT_DEBUG, 0)) 1893 return FALSE; 1894 } 1895 1896 if (relplt) 1897 { 1898 if (!add_dynamic_entry (DT_PLTGOT, 0) 1899 || !add_dynamic_entry (DT_PLTRELSZ, 0) 1900 || !add_dynamic_entry (DT_PLTREL, DT_RELA) 1901 || !add_dynamic_entry (DT_JMPREL, 0)) 1902 return FALSE; 1903 } 1904 1905 if (!add_dynamic_entry (DT_RELA, 0) 1906 || !add_dynamic_entry (DT_RELASZ, 0) 1907 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) 1908 return FALSE; 1909 1910 if (info->flags & DF_TEXTREL) 1911 { 1912 if (!add_dynamic_entry (DT_TEXTREL, 0)) 1913 return FALSE; 1914 } 1915 1916 /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER 1917 entries if needed. */ 1918 app_regs = sparc64_elf_hash_table (info)->app_regs; 1919 dynstr = eht->dynstr; 1920 1921 for (reg = 0; reg < 4; reg++) 1922 if (app_regs [reg].name != NULL) 1923 { 1924 struct elf_link_local_dynamic_entry *entry, *e; 1925 1926 if (!add_dynamic_entry (DT_SPARC_REGISTER, 0)) 1927 return FALSE; 1928 1929 entry = (struct elf_link_local_dynamic_entry *) 1930 bfd_hash_allocate (&info->hash->table, sizeof (*entry)); 1931 if (entry == NULL) 1932 return FALSE; 1933 1934 /* We cheat here a little bit: the symbol will not be local, so we 1935 put it at the end of the dynlocal linked list. We will fix it 1936 later on, as we have to fix other fields anyway. */ 1937 entry->isym.st_value = reg < 2 ? reg + 2 : reg + 4; 1938 entry->isym.st_size = 0; 1939 if (*app_regs [reg].name != '\0') 1940 entry->isym.st_name 1941 = _bfd_elf_strtab_add (dynstr, app_regs[reg].name, FALSE); 1942 else 1943 entry->isym.st_name = 0; 1944 entry->isym.st_other = 0; 1945 entry->isym.st_info = ELF_ST_INFO (app_regs [reg].bind, 1946 STT_REGISTER); 1947 entry->isym.st_shndx = app_regs [reg].shndx; 1948 entry->next = NULL; 1949 entry->input_bfd = output_bfd; 1950 entry->input_indx = -1; 1951 1952 if (eht->dynlocal == NULL) 1953 eht->dynlocal = entry; 1954 else 1955 { 1956 for (e = eht->dynlocal; e->next; e = e->next) 1957 ; 1958 e->next = entry; 1959 } 1960 eht->dynsymcount++; 1961 } 1962 } 1963#undef add_dynamic_entry 1964 1965 return TRUE; 1966} 1967 1968static bfd_boolean 1969sparc64_elf_new_section_hook (abfd, sec) 1970 bfd *abfd; 1971 asection *sec; 1972{ 1973 struct sparc64_elf_section_data *sdata; 1974 bfd_size_type amt = sizeof (*sdata); 1975 1976 sdata = (struct sparc64_elf_section_data *) bfd_zalloc (abfd, amt); 1977 if (sdata == NULL) 1978 return FALSE; 1979 sec->used_by_bfd = (PTR) sdata; 1980 1981 return _bfd_elf_new_section_hook (abfd, sec); 1982} 1983 1984static bfd_boolean 1985sparc64_elf_relax_section (abfd, section, link_info, again) 1986 bfd *abfd ATTRIBUTE_UNUSED; 1987 asection *section ATTRIBUTE_UNUSED; 1988 struct bfd_link_info *link_info ATTRIBUTE_UNUSED; 1989 bfd_boolean *again; 1990{ 1991 *again = FALSE; 1992 sec_do_relax (section) = 1; 1993 return TRUE; 1994} 1995 1996/* Relocate a SPARC64 ELF section. */ 1997 1998static bfd_boolean 1999sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, 2000 contents, relocs, local_syms, local_sections) 2001 bfd *output_bfd; 2002 struct bfd_link_info *info; 2003 bfd *input_bfd; 2004 asection *input_section; 2005 bfd_byte *contents; 2006 Elf_Internal_Rela *relocs; 2007 Elf_Internal_Sym *local_syms; 2008 asection **local_sections; 2009{ 2010 bfd *dynobj; 2011 Elf_Internal_Shdr *symtab_hdr; 2012 struct elf_link_hash_entry **sym_hashes; 2013 bfd_vma *local_got_offsets; 2014 bfd_vma got_base; 2015 asection *sgot; 2016 asection *splt; 2017 asection *sreloc; 2018 Elf_Internal_Rela *rel; 2019 Elf_Internal_Rela *relend; 2020 2021 if (info->relocatable) 2022 return TRUE; 2023 2024 dynobj = elf_hash_table (info)->dynobj; 2025 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; 2026 sym_hashes = elf_sym_hashes (input_bfd); 2027 local_got_offsets = elf_local_got_offsets (input_bfd); 2028 2029 if (elf_hash_table(info)->hgot == NULL) 2030 got_base = 0; 2031 else 2032 got_base = elf_hash_table (info)->hgot->root.u.def.value; 2033 2034 sgot = splt = sreloc = NULL; 2035 if (dynobj != NULL) 2036 splt = bfd_get_section_by_name (dynobj, ".plt"); 2037 2038 rel = relocs; 2039 relend = relocs + NUM_SHDR_ENTRIES (& elf_section_data (input_section)->rel_hdr); 2040 for (; rel < relend; rel++) 2041 { 2042 int r_type; 2043 reloc_howto_type *howto; 2044 unsigned long r_symndx; 2045 struct elf_link_hash_entry *h; 2046 Elf_Internal_Sym *sym; 2047 asection *sec; 2048 bfd_vma relocation, off; 2049 bfd_reloc_status_type r; 2050 bfd_boolean is_plt = FALSE; 2051 bfd_boolean unresolved_reloc; 2052 2053 r_type = ELF64_R_TYPE_ID (rel->r_info); 2054 if (r_type < 0 || r_type >= (int) R_SPARC_max_std) 2055 { 2056 bfd_set_error (bfd_error_bad_value); 2057 return FALSE; 2058 } 2059 howto = sparc64_elf_howto_table + r_type; 2060 2061 /* This is a final link. */ 2062 r_symndx = ELF64_R_SYM (rel->r_info); 2063 h = NULL; 2064 sym = NULL; 2065 sec = NULL; 2066 unresolved_reloc = FALSE; 2067 if (r_symndx < symtab_hdr->sh_info) 2068 { 2069 sym = local_syms + r_symndx; 2070 sec = local_sections[r_symndx]; 2071 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 2072 } 2073 else 2074 { 2075 bfd_boolean warned; 2076 2077 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, 2078 r_symndx, symtab_hdr, sym_hashes, 2079 h, sec, relocation, 2080 unresolved_reloc, warned); 2081 if (warned) 2082 { 2083 /* To avoid generating warning messages about truncated 2084 relocations, set the relocation's address to be the same as 2085 the start of this section. */ 2086 if (input_section->output_section != NULL) 2087 relocation = input_section->output_section->vma; 2088 else 2089 relocation = 0; 2090 } 2091 } 2092 2093 do_dynreloc: 2094 /* When generating a shared object, these relocations are copied 2095 into the output file to be resolved at run time. */ 2096 if (info->shared && r_symndx != 0 && (input_section->flags & SEC_ALLOC)) 2097 { 2098 switch (r_type) 2099 { 2100 case R_SPARC_PC10: 2101 case R_SPARC_PC22: 2102 case R_SPARC_PC_HH22: 2103 case R_SPARC_PC_HM10: 2104 case R_SPARC_PC_LM22: 2105 if (h != NULL 2106 && !strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_")) 2107 break; 2108 /* Fall through. */ 2109 case R_SPARC_DISP8: 2110 case R_SPARC_DISP16: 2111 case R_SPARC_DISP32: 2112 case R_SPARC_DISP64: 2113 case R_SPARC_WDISP30: 2114 case R_SPARC_WDISP22: 2115 case R_SPARC_WDISP19: 2116 case R_SPARC_WDISP16: 2117 if (h == NULL) 2118 break; 2119 /* Fall through. */ 2120 case R_SPARC_8: 2121 case R_SPARC_16: 2122 case R_SPARC_32: 2123 case R_SPARC_HI22: 2124 case R_SPARC_22: 2125 case R_SPARC_13: 2126 case R_SPARC_LO10: 2127 case R_SPARC_UA32: 2128 case R_SPARC_10: 2129 case R_SPARC_11: 2130 case R_SPARC_64: 2131 case R_SPARC_OLO10: 2132 case R_SPARC_HH22: 2133 case R_SPARC_HM10: 2134 case R_SPARC_LM22: 2135 case R_SPARC_7: 2136 case R_SPARC_5: 2137 case R_SPARC_6: 2138 case R_SPARC_HIX22: 2139 case R_SPARC_LOX10: 2140 case R_SPARC_H44: 2141 case R_SPARC_M44: 2142 case R_SPARC_L44: 2143 case R_SPARC_UA64: 2144 case R_SPARC_UA16: 2145 { 2146 Elf_Internal_Rela outrel; 2147 bfd_byte *loc; 2148 bfd_boolean skip, relocate; 2149 2150 if (sreloc == NULL) 2151 { 2152 const char *name = 2153 (bfd_elf_string_from_elf_section 2154 (input_bfd, 2155 elf_elfheader (input_bfd)->e_shstrndx, 2156 elf_section_data (input_section)->rel_hdr.sh_name)); 2157 2158 if (name == NULL) 2159 return FALSE; 2160 2161 BFD_ASSERT (strncmp (name, ".rela", 5) == 0 2162 && strcmp (bfd_get_section_name(input_bfd, 2163 input_section), 2164 name + 5) == 0); 2165 2166 sreloc = bfd_get_section_by_name (dynobj, name); 2167 BFD_ASSERT (sreloc != NULL); 2168 } 2169 2170 skip = FALSE; 2171 relocate = FALSE; 2172 2173 outrel.r_offset = 2174 _bfd_elf_section_offset (output_bfd, info, input_section, 2175 rel->r_offset); 2176 if (outrel.r_offset == (bfd_vma) -1) 2177 skip = TRUE; 2178 else if (outrel.r_offset == (bfd_vma) -2) 2179 skip = TRUE, relocate = TRUE; 2180 2181 outrel.r_offset += (input_section->output_section->vma 2182 + input_section->output_offset); 2183 2184 /* Optimize unaligned reloc usage now that we know where 2185 it finally resides. */ 2186 switch (r_type) 2187 { 2188 case R_SPARC_16: 2189 if (outrel.r_offset & 1) r_type = R_SPARC_UA16; 2190 break; 2191 case R_SPARC_UA16: 2192 if (!(outrel.r_offset & 1)) r_type = R_SPARC_16; 2193 break; 2194 case R_SPARC_32: 2195 if (outrel.r_offset & 3) r_type = R_SPARC_UA32; 2196 break; 2197 case R_SPARC_UA32: 2198 if (!(outrel.r_offset & 3)) r_type = R_SPARC_32; 2199 break; 2200 case R_SPARC_64: 2201 if (outrel.r_offset & 7) r_type = R_SPARC_UA64; 2202 break; 2203 case R_SPARC_UA64: 2204 if (!(outrel.r_offset & 7)) r_type = R_SPARC_64; 2205 break; 2206 case R_SPARC_DISP8: 2207 case R_SPARC_DISP16: 2208 case R_SPARC_DISP32: 2209 case R_SPARC_DISP64: 2210 /* If the symbol is not dynamic, we should not keep 2211 a dynamic relocation. But an .rela.* slot has been 2212 allocated for it, output R_SPARC_NONE. 2213 FIXME: Add code tracking needed dynamic relocs as 2214 e.g. i386 has. */ 2215 if (h->dynindx == -1) 2216 skip = TRUE, relocate = TRUE; 2217 break; 2218 } 2219 2220 if (skip) 2221 memset (&outrel, 0, sizeof outrel); 2222 /* h->dynindx may be -1 if the symbol was marked to 2223 become local. */ 2224 else if (h != NULL && ! is_plt 2225 && ((! info->symbolic && h->dynindx != -1) 2226 || (h->elf_link_hash_flags 2227 & ELF_LINK_HASH_DEF_REGULAR) == 0)) 2228 { 2229 BFD_ASSERT (h->dynindx != -1); 2230 outrel.r_info 2231 = ELF64_R_INFO (h->dynindx, 2232 ELF64_R_TYPE_INFO ( 2233 ELF64_R_TYPE_DATA (rel->r_info), 2234 r_type)); 2235 outrel.r_addend = rel->r_addend; 2236 } 2237 else 2238 { 2239 outrel.r_addend = relocation + rel->r_addend; 2240 if (r_type == R_SPARC_64) 2241 outrel.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE); 2242 else 2243 { 2244 long indx; 2245 2246 if (is_plt) 2247 sec = splt; 2248 2249 if (bfd_is_abs_section (sec)) 2250 indx = 0; 2251 else if (sec == NULL || sec->owner == NULL) 2252 { 2253 bfd_set_error (bfd_error_bad_value); 2254 return FALSE; 2255 } 2256 else 2257 { 2258 asection *osec; 2259 2260 osec = sec->output_section; 2261 indx = elf_section_data (osec)->dynindx; 2262 2263 /* We are turning this relocation into one 2264 against a section symbol, so subtract out 2265 the output section's address but not the 2266 offset of the input section in the output 2267 section. */ 2268 outrel.r_addend -= osec->vma; 2269 2270 /* FIXME: we really should be able to link non-pic 2271 shared libraries. */ 2272 if (indx == 0) 2273 { 2274 BFD_FAIL (); 2275 (*_bfd_error_handler) 2276 (_("%s: probably compiled without -fPIC?"), 2277 bfd_archive_filename (input_bfd)); 2278 bfd_set_error (bfd_error_bad_value); 2279 return FALSE; 2280 } 2281 } 2282 2283 outrel.r_info 2284 = ELF64_R_INFO (indx, 2285 ELF64_R_TYPE_INFO ( 2286 ELF64_R_TYPE_DATA (rel->r_info), 2287 r_type)); 2288 } 2289 } 2290 2291 loc = sreloc->contents; 2292 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); 2293 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); 2294 2295 /* This reloc will be computed at runtime, so there's no 2296 need to do anything now. */ 2297 if (! relocate) 2298 continue; 2299 } 2300 break; 2301 } 2302 } 2303 2304 switch (r_type) 2305 { 2306 case R_SPARC_GOT10: 2307 case R_SPARC_GOT13: 2308 case R_SPARC_GOT22: 2309 /* Relocation is to the entry for this symbol in the global 2310 offset table. */ 2311 if (sgot == NULL) 2312 { 2313 sgot = bfd_get_section_by_name (dynobj, ".got"); 2314 BFD_ASSERT (sgot != NULL); 2315 } 2316 2317 if (h != NULL) 2318 { 2319 bfd_boolean dyn; 2320 2321 off = h->got.offset; 2322 BFD_ASSERT (off != (bfd_vma) -1); 2323 dyn = elf_hash_table (info)->dynamic_sections_created; 2324 2325 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) 2326 || (info->shared 2327 && (info->symbolic 2328 || h->dynindx == -1 2329 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)) 2330 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) 2331 { 2332 /* This is actually a static link, or it is a -Bsymbolic 2333 link and the symbol is defined locally, or the symbol 2334 was forced to be local because of a version file. We 2335 must initialize this entry in the global offset table. 2336 Since the offset must always be a multiple of 8, we 2337 use the least significant bit to record whether we 2338 have initialized it already. 2339 2340 When doing a dynamic link, we create a .rela.got 2341 relocation entry to initialize the value. This is 2342 done in the finish_dynamic_symbol routine. */ 2343 2344 if ((off & 1) != 0) 2345 off &= ~1; 2346 else 2347 { 2348 bfd_put_64 (output_bfd, relocation, 2349 sgot->contents + off); 2350 h->got.offset |= 1; 2351 } 2352 } 2353 else 2354 unresolved_reloc = FALSE; 2355 } 2356 else 2357 { 2358 BFD_ASSERT (local_got_offsets != NULL); 2359 off = local_got_offsets[r_symndx]; 2360 BFD_ASSERT (off != (bfd_vma) -1); 2361 2362 /* The offset must always be a multiple of 8. We use 2363 the least significant bit to record whether we have 2364 already processed this entry. */ 2365 if ((off & 1) != 0) 2366 off &= ~1; 2367 else 2368 { 2369 local_got_offsets[r_symndx] |= 1; 2370 2371 if (info->shared) 2372 { 2373 asection *s; 2374 Elf_Internal_Rela outrel; 2375 bfd_byte *loc; 2376 2377 /* The Solaris 2.7 64-bit linker adds the contents 2378 of the location to the value of the reloc. 2379 Note this is different behaviour to the 2380 32-bit linker, which both adds the contents 2381 and ignores the addend. So clear the location. */ 2382 bfd_put_64 (output_bfd, (bfd_vma) 0, 2383 sgot->contents + off); 2384 2385 /* We need to generate a R_SPARC_RELATIVE reloc 2386 for the dynamic linker. */ 2387 s = bfd_get_section_by_name(dynobj, ".rela.got"); 2388 BFD_ASSERT (s != NULL); 2389 2390 outrel.r_offset = (sgot->output_section->vma 2391 + sgot->output_offset 2392 + off); 2393 outrel.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE); 2394 outrel.r_addend = relocation; 2395 loc = s->contents; 2396 loc += s->reloc_count++ * sizeof (Elf64_External_Rela); 2397 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); 2398 } 2399 else 2400 bfd_put_64 (output_bfd, relocation, sgot->contents + off); 2401 } 2402 } 2403 relocation = sgot->output_offset + off - got_base; 2404 goto do_default; 2405 2406 case R_SPARC_WPLT30: 2407 case R_SPARC_PLT32: 2408 case R_SPARC_HIPLT22: 2409 case R_SPARC_LOPLT10: 2410 case R_SPARC_PCPLT32: 2411 case R_SPARC_PCPLT22: 2412 case R_SPARC_PCPLT10: 2413 case R_SPARC_PLT64: 2414 /* Relocation is to the entry for this symbol in the 2415 procedure linkage table. */ 2416 BFD_ASSERT (h != NULL); 2417 2418 if (h->plt.offset == (bfd_vma) -1 || splt == NULL) 2419 { 2420 /* We didn't make a PLT entry for this symbol. This 2421 happens when statically linking PIC code, or when 2422 using -Bsymbolic. */ 2423 goto do_default; 2424 } 2425 2426 relocation = (splt->output_section->vma 2427 + splt->output_offset 2428 + sparc64_elf_plt_entry_offset (h->plt.offset)); 2429 unresolved_reloc = FALSE; 2430 if (r_type == R_SPARC_WPLT30) 2431 goto do_wplt30; 2432 if (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64) 2433 { 2434 r_type = r_type == R_SPARC_PLT32 ? R_SPARC_32 : R_SPARC_64; 2435 is_plt = TRUE; 2436 goto do_dynreloc; 2437 } 2438 goto do_default; 2439 2440 case R_SPARC_OLO10: 2441 { 2442 bfd_vma x; 2443 2444 relocation += rel->r_addend; 2445 relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info); 2446 2447 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 2448 x = (x & ~(bfd_vma) 0x1fff) | (relocation & 0x1fff); 2449 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 2450 2451 r = bfd_check_overflow (howto->complain_on_overflow, 2452 howto->bitsize, howto->rightshift, 2453 bfd_arch_bits_per_address (input_bfd), 2454 relocation); 2455 } 2456 break; 2457 2458 case R_SPARC_WDISP16: 2459 { 2460 bfd_vma x; 2461 2462 relocation += rel->r_addend; 2463 /* Adjust for pc-relative-ness. */ 2464 relocation -= (input_section->output_section->vma 2465 + input_section->output_offset); 2466 relocation -= rel->r_offset; 2467 2468 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 2469 x &= ~(bfd_vma) 0x303fff; 2470 x |= ((((relocation >> 2) & 0xc000) << 6) 2471 | ((relocation >> 2) & 0x3fff)); 2472 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 2473 2474 r = bfd_check_overflow (howto->complain_on_overflow, 2475 howto->bitsize, howto->rightshift, 2476 bfd_arch_bits_per_address (input_bfd), 2477 relocation); 2478 } 2479 break; 2480 2481 case R_SPARC_HIX22: 2482 { 2483 bfd_vma x; 2484 2485 relocation += rel->r_addend; 2486 relocation = relocation ^ MINUS_ONE; 2487 2488 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 2489 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff); 2490 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 2491 2492 r = bfd_check_overflow (howto->complain_on_overflow, 2493 howto->bitsize, howto->rightshift, 2494 bfd_arch_bits_per_address (input_bfd), 2495 relocation); 2496 } 2497 break; 2498 2499 case R_SPARC_LOX10: 2500 { 2501 bfd_vma x; 2502 2503 relocation += rel->r_addend; 2504 relocation = (relocation & 0x3ff) | 0x1c00; 2505 2506 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 2507 x = (x & ~(bfd_vma) 0x1fff) | relocation; 2508 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 2509 2510 r = bfd_reloc_ok; 2511 } 2512 break; 2513 2514 case R_SPARC_WDISP30: 2515 do_wplt30: 2516 if (sec_do_relax (input_section) 2517 && rel->r_offset + 4 < input_section->_raw_size) 2518 { 2519#define G0 0 2520#define O7 15 2521#define XCC (2 << 20) 2522#define COND(x) (((x)&0xf)<<25) 2523#define CONDA COND(0x8) 2524#define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC) 2525#define INSN_BA (F2(0,2) | CONDA) 2526#define INSN_OR F3(2, 0x2, 0) 2527#define INSN_NOP F2(0,4) 2528 2529 bfd_vma x, y; 2530 2531 /* If the instruction is a call with either: 2532 restore 2533 arithmetic instruction with rd == %o7 2534 where rs1 != %o7 and rs2 if it is register != %o7 2535 then we can optimize if the call destination is near 2536 by changing the call into a branch always. */ 2537 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 2538 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); 2539 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2)) 2540 { 2541 if (((y & OP3(~0)) == OP3(0x3d) /* restore */ 2542 || ((y & OP3(0x28)) == 0 /* arithmetic */ 2543 && (y & RD(~0)) == RD(O7))) 2544 && (y & RS1(~0)) != RS1(O7) 2545 && ((y & F3I(~0)) 2546 || (y & RS2(~0)) != RS2(O7))) 2547 { 2548 bfd_vma reloc; 2549 2550 reloc = relocation + rel->r_addend - rel->r_offset; 2551 reloc -= (input_section->output_section->vma 2552 + input_section->output_offset); 2553 if (reloc & 3) 2554 goto do_default; 2555 2556 /* Ensure the branch fits into simm22. */ 2557 if ((reloc & ~(bfd_vma)0x7fffff) 2558 && ((reloc | 0x7fffff) != MINUS_ONE)) 2559 goto do_default; 2560 reloc >>= 2; 2561 2562 /* Check whether it fits into simm19. */ 2563 if ((reloc & 0x3c0000) == 0 2564 || (reloc & 0x3c0000) == 0x3c0000) 2565 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */ 2566 else 2567 x = INSN_BA | (reloc & 0x3fffff); /* ba */ 2568 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 2569 r = bfd_reloc_ok; 2570 if (rel->r_offset >= 4 2571 && (y & (0xffffffff ^ RS1(~0))) 2572 == (INSN_OR | RD(O7) | RS2(G0))) 2573 { 2574 bfd_vma z; 2575 unsigned int reg; 2576 2577 z = bfd_get_32 (input_bfd, 2578 contents + rel->r_offset - 4); 2579 if ((z & (0xffffffff ^ RD(~0))) 2580 != (INSN_OR | RS1(O7) | RS2(G0))) 2581 break; 2582 2583 /* The sequence was 2584 or %o7, %g0, %rN 2585 call foo 2586 or %rN, %g0, %o7 2587 2588 If call foo was replaced with ba, replace 2589 or %rN, %g0, %o7 with nop. */ 2590 2591 reg = (y & RS1(~0)) >> 14; 2592 if (reg != ((z & RD(~0)) >> 25) 2593 || reg == G0 || reg == O7) 2594 break; 2595 2596 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP, 2597 contents + rel->r_offset + 4); 2598 } 2599 break; 2600 } 2601 } 2602 } 2603 /* Fall through. */ 2604 2605 default: 2606 do_default: 2607 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 2608 contents, rel->r_offset, 2609 relocation, rel->r_addend); 2610 break; 2611 } 2612 2613 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections 2614 because such sections are not SEC_ALLOC and thus ld.so will 2615 not process them. */ 2616 if (unresolved_reloc 2617 && !((input_section->flags & SEC_DEBUGGING) != 0 2618 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0)) 2619 (*_bfd_error_handler) 2620 (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"), 2621 bfd_archive_filename (input_bfd), 2622 bfd_get_section_name (input_bfd, input_section), 2623 (long) rel->r_offset, 2624 h->root.root.string); 2625 2626 switch (r) 2627 { 2628 case bfd_reloc_ok: 2629 break; 2630 2631 default: 2632 case bfd_reloc_outofrange: 2633 abort (); 2634 2635 case bfd_reloc_overflow: 2636 { 2637 const char *name; 2638 2639 /* The Solaris native linker silently disregards 2640 overflows. We don't, but this breaks stabs debugging 2641 info, whose relocations are only 32-bits wide. Ignore 2642 overflows for discarded entries. */ 2643 if ((r_type == R_SPARC_32 || r_type == R_SPARC_DISP32) 2644 && _bfd_elf_section_offset (output_bfd, info, input_section, 2645 rel->r_offset) == (bfd_vma) -1) 2646 break; 2647 2648 if (h != NULL) 2649 { 2650 if (h->root.type == bfd_link_hash_undefweak 2651 && howto->pc_relative) 2652 { 2653 /* Assume this is a call protected by other code that 2654 detect the symbol is undefined. If this is the case, 2655 we can safely ignore the overflow. If not, the 2656 program is hosed anyway, and a little warning isn't 2657 going to help. */ 2658 break; 2659 } 2660 2661 name = h->root.root.string; 2662 } 2663 else 2664 { 2665 name = (bfd_elf_string_from_elf_section 2666 (input_bfd, 2667 symtab_hdr->sh_link, 2668 sym->st_name)); 2669 if (name == NULL) 2670 return FALSE; 2671 if (*name == '\0') 2672 name = bfd_section_name (input_bfd, sec); 2673 } 2674 if (! ((*info->callbacks->reloc_overflow) 2675 (info, name, howto->name, (bfd_vma) 0, 2676 input_bfd, input_section, rel->r_offset))) 2677 return FALSE; 2678 } 2679 break; 2680 } 2681 } 2682 2683 return TRUE; 2684} 2685 2686/* Finish up dynamic symbol handling. We set the contents of various 2687 dynamic sections here. */ 2688 2689static bfd_boolean 2690sparc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym) 2691 bfd *output_bfd; 2692 struct bfd_link_info *info; 2693 struct elf_link_hash_entry *h; 2694 Elf_Internal_Sym *sym; 2695{ 2696 bfd *dynobj; 2697 2698 dynobj = elf_hash_table (info)->dynobj; 2699 2700 if (h->plt.offset != (bfd_vma) -1) 2701 { 2702 asection *splt; 2703 asection *srela; 2704 Elf_Internal_Rela rela; 2705 bfd_byte *loc; 2706 2707 /* This symbol has an entry in the PLT. Set it up. */ 2708 2709 BFD_ASSERT (h->dynindx != -1); 2710 2711 splt = bfd_get_section_by_name (dynobj, ".plt"); 2712 srela = bfd_get_section_by_name (dynobj, ".rela.plt"); 2713 BFD_ASSERT (splt != NULL && srela != NULL); 2714 2715 /* Fill in the entry in the .rela.plt section. */ 2716 2717 if (h->plt.offset < LARGE_PLT_THRESHOLD) 2718 { 2719 rela.r_offset = sparc64_elf_plt_entry_offset (h->plt.offset); 2720 rela.r_addend = 0; 2721 } 2722 else 2723 { 2724 bfd_vma max = splt->_raw_size / PLT_ENTRY_SIZE; 2725 rela.r_offset = sparc64_elf_plt_ptr_offset (h->plt.offset, max); 2726 rela.r_addend = -(sparc64_elf_plt_entry_offset (h->plt.offset) + 4) 2727 -(splt->output_section->vma + splt->output_offset); 2728 } 2729 rela.r_offset += (splt->output_section->vma + splt->output_offset); 2730 rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_JMP_SLOT); 2731 2732 /* Adjust for the first 4 reserved elements in the .plt section 2733 when setting the offset in the .rela.plt section. 2734 Sun forgot to read their own ABI and copied elf32-sparc behaviour, 2735 thus .plt[4] has corresponding .rela.plt[0] and so on. */ 2736 2737 loc = srela->contents; 2738 loc += (h->plt.offset - 4) * sizeof (Elf64_External_Rela); 2739 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); 2740 2741 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) 2742 { 2743 /* Mark the symbol as undefined, rather than as defined in 2744 the .plt section. Leave the value alone. */ 2745 sym->st_shndx = SHN_UNDEF; 2746 /* If the symbol is weak, we do need to clear the value. 2747 Otherwise, the PLT entry would provide a definition for 2748 the symbol even if the symbol wasn't defined anywhere, 2749 and so the symbol would never be NULL. */ 2750 if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK) 2751 == 0) 2752 sym->st_value = 0; 2753 } 2754 } 2755 2756 if (h->got.offset != (bfd_vma) -1) 2757 { 2758 asection *sgot; 2759 asection *srela; 2760 Elf_Internal_Rela rela; 2761 bfd_byte *loc; 2762 2763 /* This symbol has an entry in the GOT. Set it up. */ 2764 2765 sgot = bfd_get_section_by_name (dynobj, ".got"); 2766 srela = bfd_get_section_by_name (dynobj, ".rela.got"); 2767 BFD_ASSERT (sgot != NULL && srela != NULL); 2768 2769 rela.r_offset = (sgot->output_section->vma 2770 + sgot->output_offset 2771 + (h->got.offset &~ (bfd_vma) 1)); 2772 2773 /* If this is a -Bsymbolic link, and the symbol is defined 2774 locally, we just want to emit a RELATIVE reloc. Likewise if 2775 the symbol was forced to be local because of a version file. 2776 The entry in the global offset table will already have been 2777 initialized in the relocate_section function. */ 2778 if (info->shared 2779 && (info->symbolic || h->dynindx == -1) 2780 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) 2781 { 2782 asection *sec = h->root.u.def.section; 2783 rela.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE); 2784 rela.r_addend = (h->root.u.def.value 2785 + sec->output_section->vma 2786 + sec->output_offset); 2787 } 2788 else 2789 { 2790 rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_GLOB_DAT); 2791 rela.r_addend = 0; 2792 } 2793 2794 bfd_put_64 (output_bfd, (bfd_vma) 0, 2795 sgot->contents + (h->got.offset &~ (bfd_vma) 1)); 2796 loc = srela->contents; 2797 loc += srela->reloc_count++ * sizeof (Elf64_External_Rela); 2798 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); 2799 } 2800 2801 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) 2802 { 2803 asection *s; 2804 Elf_Internal_Rela rela; 2805 bfd_byte *loc; 2806 2807 /* This symbols needs a copy reloc. Set it up. */ 2808 BFD_ASSERT (h->dynindx != -1); 2809 2810 s = bfd_get_section_by_name (h->root.u.def.section->owner, 2811 ".rela.bss"); 2812 BFD_ASSERT (s != NULL); 2813 2814 rela.r_offset = (h->root.u.def.value 2815 + h->root.u.def.section->output_section->vma 2816 + h->root.u.def.section->output_offset); 2817 rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_COPY); 2818 rela.r_addend = 0; 2819 loc = s->contents + s->reloc_count++ * sizeof (Elf64_External_Rela); 2820 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); 2821 } 2822 2823 /* Mark some specially defined symbols as absolute. */ 2824 if (strcmp (h->root.root.string, "_DYNAMIC") == 0 2825 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 2826 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) 2827 sym->st_shndx = SHN_ABS; 2828 2829 return TRUE; 2830} 2831 2832/* Finish up the dynamic sections. */ 2833 2834static bfd_boolean 2835sparc64_elf_finish_dynamic_sections (output_bfd, info) 2836 bfd *output_bfd; 2837 struct bfd_link_info *info; 2838{ 2839 bfd *dynobj; 2840 int stt_regidx = -1; 2841 asection *sdyn; 2842 asection *sgot; 2843 2844 dynobj = elf_hash_table (info)->dynobj; 2845 2846 sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); 2847 2848 if (elf_hash_table (info)->dynamic_sections_created) 2849 { 2850 asection *splt; 2851 Elf64_External_Dyn *dyncon, *dynconend; 2852 2853 splt = bfd_get_section_by_name (dynobj, ".plt"); 2854 BFD_ASSERT (splt != NULL && sdyn != NULL); 2855 2856 dyncon = (Elf64_External_Dyn *) sdyn->contents; 2857 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size); 2858 for (; dyncon < dynconend; dyncon++) 2859 { 2860 Elf_Internal_Dyn dyn; 2861 const char *name; 2862 bfd_boolean size; 2863 2864 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); 2865 2866 switch (dyn.d_tag) 2867 { 2868 case DT_PLTGOT: name = ".plt"; size = FALSE; break; 2869 case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break; 2870 case DT_JMPREL: name = ".rela.plt"; size = FALSE; break; 2871 case DT_SPARC_REGISTER: 2872 if (stt_regidx == -1) 2873 { 2874 stt_regidx = 2875 _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1); 2876 if (stt_regidx == -1) 2877 return FALSE; 2878 } 2879 dyn.d_un.d_val = stt_regidx++; 2880 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); 2881 /* fallthrough */ 2882 default: name = NULL; size = FALSE; break; 2883 } 2884 2885 if (name != NULL) 2886 { 2887 asection *s; 2888 2889 s = bfd_get_section_by_name (output_bfd, name); 2890 if (s == NULL) 2891 dyn.d_un.d_val = 0; 2892 else 2893 { 2894 if (! size) 2895 dyn.d_un.d_ptr = s->vma; 2896 else 2897 { 2898 if (s->_cooked_size != 0) 2899 dyn.d_un.d_val = s->_cooked_size; 2900 else 2901 dyn.d_un.d_val = s->_raw_size; 2902 } 2903 } 2904 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); 2905 } 2906 } 2907 2908 /* Initialize the contents of the .plt section. */ 2909 if (splt->_raw_size > 0) 2910 sparc64_elf_build_plt (output_bfd, splt->contents, 2911 (int) (splt->_raw_size / PLT_ENTRY_SIZE)); 2912 2913 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 2914 PLT_ENTRY_SIZE; 2915 } 2916 2917 /* Set the first entry in the global offset table to the address of 2918 the dynamic section. */ 2919 sgot = bfd_get_section_by_name (dynobj, ".got"); 2920 BFD_ASSERT (sgot != NULL); 2921 if (sgot->_raw_size > 0) 2922 { 2923 if (sdyn == NULL) 2924 bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents); 2925 else 2926 bfd_put_64 (output_bfd, 2927 sdyn->output_section->vma + sdyn->output_offset, 2928 sgot->contents); 2929 } 2930 2931 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 8; 2932 2933 return TRUE; 2934} 2935 2936static enum elf_reloc_type_class 2937sparc64_elf_reloc_type_class (rela) 2938 const Elf_Internal_Rela *rela; 2939{ 2940 switch ((int) ELF64_R_TYPE (rela->r_info)) 2941 { 2942 case R_SPARC_RELATIVE: 2943 return reloc_class_relative; 2944 case R_SPARC_JMP_SLOT: 2945 return reloc_class_plt; 2946 case R_SPARC_COPY: 2947 return reloc_class_copy; 2948 default: 2949 return reloc_class_normal; 2950 } 2951} 2952 2953/* Functions for dealing with the e_flags field. */ 2954 2955/* Merge backend specific data from an object file to the output 2956 object file when linking. */ 2957 2958static bfd_boolean 2959sparc64_elf_merge_private_bfd_data (ibfd, obfd) 2960 bfd *ibfd; 2961 bfd *obfd; 2962{ 2963 bfd_boolean error; 2964 flagword new_flags, old_flags; 2965 int new_mm, old_mm; 2966 2967 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour 2968 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 2969 return TRUE; 2970 2971 new_flags = elf_elfheader (ibfd)->e_flags; 2972 old_flags = elf_elfheader (obfd)->e_flags; 2973 2974 if (!elf_flags_init (obfd)) /* First call, no flags set */ 2975 { 2976 elf_flags_init (obfd) = TRUE; 2977 elf_elfheader (obfd)->e_flags = new_flags; 2978 } 2979 2980 else if (new_flags == old_flags) /* Compatible flags are ok */ 2981 ; 2982 2983 else /* Incompatible flags */ 2984 { 2985 error = FALSE; 2986 2987#define EF_SPARC_ISA_EXTENSIONS \ 2988 (EF_SPARC_SUN_US1 | EF_SPARC_SUN_US3 | EF_SPARC_HAL_R1) 2989 2990 if ((ibfd->flags & DYNAMIC) != 0) 2991 { 2992 /* We don't want dynamic objects memory ordering and 2993 architecture to have any role. That's what dynamic linker 2994 should do. */ 2995 new_flags &= ~(EF_SPARCV9_MM | EF_SPARC_ISA_EXTENSIONS); 2996 new_flags |= (old_flags 2997 & (EF_SPARCV9_MM | EF_SPARC_ISA_EXTENSIONS)); 2998 } 2999 else 3000 { 3001 /* Choose the highest architecture requirements. */ 3002 old_flags |= (new_flags & EF_SPARC_ISA_EXTENSIONS); 3003 new_flags |= (old_flags & EF_SPARC_ISA_EXTENSIONS); 3004 if ((old_flags & (EF_SPARC_SUN_US1 | EF_SPARC_SUN_US3)) 3005 && (old_flags & EF_SPARC_HAL_R1)) 3006 { 3007 error = TRUE; 3008 (*_bfd_error_handler) 3009 (_("%s: linking UltraSPARC specific with HAL specific code"), 3010 bfd_archive_filename (ibfd)); 3011 } 3012 /* Choose the most restrictive memory ordering. */ 3013 old_mm = (old_flags & EF_SPARCV9_MM); 3014 new_mm = (new_flags & EF_SPARCV9_MM); 3015 old_flags &= ~EF_SPARCV9_MM; 3016 new_flags &= ~EF_SPARCV9_MM; 3017 if (new_mm < old_mm) 3018 old_mm = new_mm; 3019 old_flags |= old_mm; 3020 new_flags |= old_mm; 3021 } 3022 3023 /* Warn about any other mismatches */ 3024 if (new_flags != old_flags) 3025 { 3026 error = TRUE; 3027 (*_bfd_error_handler) 3028 (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), 3029 bfd_archive_filename (ibfd), (long) new_flags, (long) old_flags); 3030 } 3031 3032 elf_elfheader (obfd)->e_flags = old_flags; 3033 3034 if (error) 3035 { 3036 bfd_set_error (bfd_error_bad_value); 3037 return FALSE; 3038 } 3039 } 3040 return TRUE; 3041} 3042 3043/* MARCO: Set the correct entry size for the .stab section. */ 3044 3045static bfd_boolean 3046sparc64_elf_fake_sections (abfd, hdr, sec) 3047 bfd *abfd ATTRIBUTE_UNUSED; 3048 Elf_Internal_Shdr *hdr ATTRIBUTE_UNUSED; 3049 asection *sec; 3050{ 3051 const char *name; 3052 3053 name = bfd_get_section_name (abfd, sec); 3054 3055 if (strcmp (name, ".stab") == 0) 3056 { 3057 /* Even in the 64bit case the stab entries are only 12 bytes long. */ 3058 elf_section_data (sec)->this_hdr.sh_entsize = 12; 3059 } 3060 3061 return TRUE; 3062} 3063 3064/* Print a STT_REGISTER symbol to file FILE. */ 3065 3066static const char * 3067sparc64_elf_print_symbol_all (abfd, filep, symbol) 3068 bfd *abfd ATTRIBUTE_UNUSED; 3069 PTR filep; 3070 asymbol *symbol; 3071{ 3072 FILE *file = (FILE *) filep; 3073 int reg, type; 3074 3075 if (ELF_ST_TYPE (((elf_symbol_type *) symbol)->internal_elf_sym.st_info) 3076 != STT_REGISTER) 3077 return NULL; 3078 3079 reg = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; 3080 type = symbol->flags; 3081 fprintf (file, "REG_%c%c%11s%c%c R", "GOLI" [reg / 8], '0' + (reg & 7), "", 3082 ((type & BSF_LOCAL) 3083 ? (type & BSF_GLOBAL) ? '!' : 'l' 3084 : (type & BSF_GLOBAL) ? 'g' : ' '), 3085 (type & BSF_WEAK) ? 'w' : ' '); 3086 if (symbol->name == NULL || symbol->name [0] == '\0') 3087 return "#scratch"; 3088 else 3089 return symbol->name; 3090} 3091 3092/* Set the right machine number for a SPARC64 ELF file. */ 3093 3094static bfd_boolean 3095sparc64_elf_object_p (abfd) 3096 bfd *abfd; 3097{ 3098 unsigned long mach = bfd_mach_sparc_v9; 3099 3100 if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3) 3101 mach = bfd_mach_sparc_v9b; 3102 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1) 3103 mach = bfd_mach_sparc_v9a; 3104 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach); 3105} 3106 3107/* Relocations in the 64 bit SPARC ELF ABI are more complex than in 3108 standard ELF, because R_SPARC_OLO10 has secondary addend in 3109 ELF64_R_TYPE_DATA field. This structure is used to redirect the 3110 relocation handling routines. */ 3111 3112const struct elf_size_info sparc64_elf_size_info = 3113{ 3114 sizeof (Elf64_External_Ehdr), 3115 sizeof (Elf64_External_Phdr), 3116 sizeof (Elf64_External_Shdr), 3117 sizeof (Elf64_External_Rel), 3118 sizeof (Elf64_External_Rela), 3119 sizeof (Elf64_External_Sym), 3120 sizeof (Elf64_External_Dyn), 3121 sizeof (Elf_External_Note), 3122 4, /* hash-table entry size. */ 3123 /* Internal relocations per external relocations. 3124 For link purposes we use just 1 internal per 3125 1 external, for assembly and slurp symbol table 3126 we use 2. */ 3127 1, 3128 64, /* arch_size. */ 3129 3, /* log_file_align. */ 3130 ELFCLASS64, 3131 EV_CURRENT, 3132 bfd_elf64_write_out_phdrs, 3133 bfd_elf64_write_shdrs_and_ehdr, 3134 sparc64_elf_write_relocs, 3135 bfd_elf64_swap_symbol_in, 3136 bfd_elf64_swap_symbol_out, 3137 sparc64_elf_slurp_reloc_table, 3138 bfd_elf64_slurp_symbol_table, 3139 bfd_elf64_swap_dyn_in, 3140 bfd_elf64_swap_dyn_out, 3141 bfd_elf64_swap_reloc_in, 3142 bfd_elf64_swap_reloc_out, 3143 bfd_elf64_swap_reloca_in, 3144 bfd_elf64_swap_reloca_out 3145}; 3146 3147#define TARGET_BIG_SYM bfd_elf64_sparc_vec 3148#define TARGET_BIG_NAME "elf64-sparc" 3149#define ELF_ARCH bfd_arch_sparc 3150#define ELF_MAXPAGESIZE 0x100000 3151 3152/* This is the official ABI value. */ 3153#define ELF_MACHINE_CODE EM_SPARCV9 3154 3155/* This is the value that we used before the ABI was released. */ 3156#define ELF_MACHINE_ALT1 EM_OLD_SPARCV9 3157 3158#define bfd_elf64_bfd_link_hash_table_create \ 3159 sparc64_elf_bfd_link_hash_table_create 3160 3161#define elf_info_to_howto \ 3162 sparc64_elf_info_to_howto 3163#define bfd_elf64_get_reloc_upper_bound \ 3164 sparc64_elf_get_reloc_upper_bound 3165#define bfd_elf64_get_dynamic_reloc_upper_bound \ 3166 sparc64_elf_get_dynamic_reloc_upper_bound 3167#define bfd_elf64_canonicalize_reloc \ 3168 sparc64_elf_canonicalize_reloc 3169#define bfd_elf64_canonicalize_dynamic_reloc \ 3170 sparc64_elf_canonicalize_dynamic_reloc 3171#define bfd_elf64_bfd_reloc_type_lookup \ 3172 sparc64_elf_reloc_type_lookup 3173#define bfd_elf64_bfd_relax_section \ 3174 sparc64_elf_relax_section 3175#define bfd_elf64_new_section_hook \ 3176 sparc64_elf_new_section_hook 3177 3178#define elf_backend_create_dynamic_sections \ 3179 _bfd_elf_create_dynamic_sections 3180#define elf_backend_add_symbol_hook \ 3181 sparc64_elf_add_symbol_hook 3182#define elf_backend_get_symbol_type \ 3183 sparc64_elf_get_symbol_type 3184#define elf_backend_symbol_processing \ 3185 sparc64_elf_symbol_processing 3186#define elf_backend_check_relocs \ 3187 sparc64_elf_check_relocs 3188#define elf_backend_adjust_dynamic_symbol \ 3189 sparc64_elf_adjust_dynamic_symbol 3190#define elf_backend_size_dynamic_sections \ 3191 sparc64_elf_size_dynamic_sections 3192#define elf_backend_relocate_section \ 3193 sparc64_elf_relocate_section 3194#define elf_backend_finish_dynamic_symbol \ 3195 sparc64_elf_finish_dynamic_symbol 3196#define elf_backend_finish_dynamic_sections \ 3197 sparc64_elf_finish_dynamic_sections 3198#define elf_backend_print_symbol_all \ 3199 sparc64_elf_print_symbol_all 3200#define elf_backend_output_arch_syms \ 3201 sparc64_elf_output_arch_syms 3202#define bfd_elf64_bfd_merge_private_bfd_data \ 3203 sparc64_elf_merge_private_bfd_data 3204#define elf_backend_fake_sections \ 3205 sparc64_elf_fake_sections 3206 3207#define elf_backend_size_info \ 3208 sparc64_elf_size_info 3209#define elf_backend_object_p \ 3210 sparc64_elf_object_p 3211#define elf_backend_reloc_type_class \ 3212 sparc64_elf_reloc_type_class 3213 3214#define elf_backend_want_got_plt 0 3215#define elf_backend_plt_readonly 0 3216#define elf_backend_want_plt_sym 1 3217#define elf_backend_rela_normal 1 3218 3219/* Section 5.2.4 of the ABI specifies a 256-byte boundary for the table. */ 3220#define elf_backend_plt_alignment 8 3221 3222#define elf_backend_got_header_size 8 3223 3224#include "elf64-target.h" 3225