| 1 | /* SPARC-specific support for 64-bit ELF |
| 2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 |
| 3 | 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 | |
| 37 | static struct bfd_link_hash_table * sparc64_elf_bfd_link_hash_table_create |
| 38 | PARAMS ((bfd *)); |
| 39 | static bfd_reloc_status_type init_insn_reloc |
| 40 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, |
| 41 | bfd *, bfd_vma *, bfd_vma *)); |
| 42 | static reloc_howto_type *sparc64_elf_reloc_type_lookup |
| 43 | PARAMS ((bfd *, bfd_reloc_code_real_type)); |
| 44 | static void sparc64_elf_info_to_howto |
| 45 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
| 46 | |
| 47 | static void sparc64_elf_build_plt |
| 48 | PARAMS ((bfd *, unsigned char *, int)); |
| 49 | static bfd_vma sparc64_elf_plt_entry_offset |
| 50 | PARAMS ((bfd_vma)); |
| 51 | static bfd_vma sparc64_elf_plt_ptr_offset |
| 52 | PARAMS ((bfd_vma, bfd_vma)); |
| 53 | |
| 54 | static boolean sparc64_elf_check_relocs |
| 55 | PARAMS ((bfd *, struct bfd_link_info *, asection *sec, |
| 56 | const Elf_Internal_Rela *)); |
| 57 | static boolean sparc64_elf_adjust_dynamic_symbol |
| 58 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); |
| 59 | static boolean sparc64_elf_size_dynamic_sections |
| 60 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 61 | static int sparc64_elf_get_symbol_type |
| 62 | PARAMS (( Elf_Internal_Sym *, int)); |
| 63 | static boolean sparc64_elf_add_symbol_hook |
| 64 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, |
| 65 | const char **, flagword *, asection **, bfd_vma *)); |
| 66 | static boolean sparc64_elf_output_arch_syms |
| 67 | PARAMS ((bfd *, struct bfd_link_info *, PTR, |
| 68 | boolean (*) (PTR, const char *, Elf_Internal_Sym *, asection *))); |
| 69 | static void sparc64_elf_symbol_processing |
| 70 | PARAMS ((bfd *, asymbol *)); |
| 71 | |
| 72 | static boolean sparc64_elf_merge_private_bfd_data |
| 73 | PARAMS ((bfd *, bfd *)); |
| 74 | |
| 75 | static boolean sparc64_elf_fake_sections |
| 76 | PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *)); |
| 77 | |
| 78 | static const char *sparc64_elf_print_symbol_all |
| 79 | PARAMS ((bfd *, PTR, asymbol *)); |
| 80 | static boolean sparc64_elf_relax_section |
| 81 | PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *)); |
| 82 | static boolean sparc64_elf_relocate_section |
| 83 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
| 84 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); |
| 85 | static boolean sparc64_elf_finish_dynamic_symbol |
| 86 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
| 87 | Elf_Internal_Sym *)); |
| 88 | static boolean sparc64_elf_finish_dynamic_sections |
| 89 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 90 | static boolean sparc64_elf_object_p PARAMS ((bfd *)); |
| 91 | static long sparc64_elf_get_reloc_upper_bound PARAMS ((bfd *, asection *)); |
| 92 | static long sparc64_elf_get_dynamic_reloc_upper_bound PARAMS ((bfd *)); |
| 93 | static boolean sparc64_elf_slurp_one_reloc_table |
| 94 | PARAMS ((bfd *, asection *, Elf_Internal_Shdr *, asymbol **, boolean)); |
| 95 | static boolean sparc64_elf_slurp_reloc_table |
| 96 | PARAMS ((bfd *, asection *, asymbol **, boolean)); |
| 97 | static long sparc64_elf_canonicalize_dynamic_reloc |
| 98 | PARAMS ((bfd *, arelent **, asymbol **)); |
| 99 | static void sparc64_elf_write_relocs PARAMS ((bfd *, asection *, PTR)); |
| 100 | static enum elf_reloc_type_class sparc64_elf_reloc_type_class |
| 101 | PARAMS ((const Elf_Internal_Rela *)); |
| 102 | \f |
| 103 | /* The relocation "howto" table. */ |
| 104 | |
| 105 | static bfd_reloc_status_type sparc_elf_notsup_reloc |
| 106 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 107 | static bfd_reloc_status_type sparc_elf_wdisp16_reloc |
| 108 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 109 | static bfd_reloc_status_type sparc_elf_hix22_reloc |
| 110 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 111 | static bfd_reloc_status_type sparc_elf_lox10_reloc |
| 112 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 113 | |
| 114 | static reloc_howto_type sparc64_elf_howto_table[] = |
| 115 | { |
| 116 | HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), |
| 117 | HOWTO(R_SPARC_8, 0,0, 8,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", false,0,0x000000ff,true), |
| 118 | HOWTO(R_SPARC_16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", false,0,0x0000ffff,true), |
| 119 | HOWTO(R_SPARC_32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", false,0,0xffffffff,true), |
| 120 | HOWTO(R_SPARC_DISP8, 0,0, 8,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", false,0,0x000000ff,true), |
| 121 | HOWTO(R_SPARC_DISP16, 0,1,16,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", false,0,0x0000ffff,true), |
| 122 | HOWTO(R_SPARC_DISP32, 0,2,32,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", false,0,0xffffffff,true), |
| 123 | HOWTO(R_SPARC_WDISP30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", false,0,0x3fffffff,true), |
| 124 | HOWTO(R_SPARC_WDISP22, 2,2,22,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", false,0,0x003fffff,true), |
| 125 | HOWTO(R_SPARC_HI22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", false,0,0x003fffff,true), |
| 126 | HOWTO(R_SPARC_22, 0,2,22,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", false,0,0x003fffff,true), |
| 127 | HOWTO(R_SPARC_13, 0,2,13,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", false,0,0x00001fff,true), |
| 128 | HOWTO(R_SPARC_LO10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", false,0,0x000003ff,true), |
| 129 | HOWTO(R_SPARC_GOT10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", false,0,0x000003ff,true), |
| 130 | HOWTO(R_SPARC_GOT13, 0,2,13,false,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", false,0,0x00001fff,true), |
| 131 | HOWTO(R_SPARC_GOT22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", false,0,0x003fffff,true), |
| 132 | HOWTO(R_SPARC_PC10, 0,2,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", false,0,0x000003ff,true), |
| 133 | HOWTO(R_SPARC_PC22, 10,2,22,true, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", false,0,0x003fffff,true), |
| 134 | HOWTO(R_SPARC_WPLT30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", false,0,0x3fffffff,true), |
| 135 | HOWTO(R_SPARC_COPY, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", false,0,0x00000000,true), |
| 136 | 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), |
| 137 | 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), |
| 138 | HOWTO(R_SPARC_RELATIVE, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",false,0,0x00000000,true), |
| 139 | HOWTO(R_SPARC_UA32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", false,0,0xffffffff,true), |
| 140 | #ifndef SPARC64_OLD_RELOCS |
| 141 | HOWTO(R_SPARC_PLT32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", false,0,0xffffffff,true), |
| 142 | /* These aren't implemented yet. */ |
| 143 | HOWTO(R_SPARC_HIPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_HIPLT22", false,0,0x00000000,true), |
| 144 | HOWTO(R_SPARC_LOPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_LOPLT10", false,0,0x00000000,true), |
| 145 | HOWTO(R_SPARC_PCPLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT32", false,0,0x00000000,true), |
| 146 | HOWTO(R_SPARC_PCPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT22", false,0,0x00000000,true), |
| 147 | HOWTO(R_SPARC_PCPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT10", false,0,0x00000000,true), |
| 148 | #endif |
| 149 | HOWTO(R_SPARC_10, 0,2,10,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", false,0,0x000003ff,true), |
| 150 | HOWTO(R_SPARC_11, 0,2,11,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", false,0,0x000007ff,true), |
| 151 | HOWTO(R_SPARC_64, 0,4,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", false,0,MINUS_ONE, true), |
| 152 | HOWTO(R_SPARC_OLO10, 0,2,13,false,0,complain_overflow_signed, sparc_elf_notsup_reloc, "R_SPARC_OLO10", false,0,0x00001fff,true), |
| 153 | HOWTO(R_SPARC_HH22, 42,2,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", false,0,0x003fffff,true), |
| 154 | HOWTO(R_SPARC_HM10, 32,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", false,0,0x000003ff,true), |
| 155 | HOWTO(R_SPARC_LM22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", false,0,0x003fffff,true), |
| 156 | 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), |
| 157 | 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), |
| 158 | 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), |
| 159 | HOWTO(R_SPARC_WDISP16, 2,2,16,true, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", false,0,0x00000000,true), |
| 160 | HOWTO(R_SPARC_WDISP19, 2,2,19,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", false,0,0x0007ffff,true), |
| 161 | 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), |
| 162 | HOWTO(R_SPARC_7, 0,2, 7,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", false,0,0x0000007f,true), |
| 163 | HOWTO(R_SPARC_5, 0,2, 5,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", false,0,0x0000001f,true), |
| 164 | HOWTO(R_SPARC_6, 0,2, 6,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", false,0,0x0000003f,true), |
| 165 | HOWTO(R_SPARC_DISP64, 0,4,64,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP64", false,0,MINUS_ONE, true), |
| 166 | HOWTO(R_SPARC_PLT64, 0,4,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT64", false,0,MINUS_ONE, true), |
| 167 | HOWTO(R_SPARC_HIX22, 0,4, 0,false,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_HIX22", false,0,MINUS_ONE, false), |
| 168 | HOWTO(R_SPARC_LOX10, 0,4, 0,false,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_LOX10", false,0,MINUS_ONE, false), |
| 169 | HOWTO(R_SPARC_H44, 22,2,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_H44", false,0,0x003fffff,false), |
| 170 | HOWTO(R_SPARC_M44, 12,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_M44", false,0,0x000003ff,false), |
| 171 | HOWTO(R_SPARC_L44, 0,2,13,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_L44", false,0,0x00000fff,false), |
| 172 | HOWTO(R_SPARC_REGISTER, 0,4, 0,false,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_REGISTER",false,0,MINUS_ONE, false), |
| 173 | HOWTO(R_SPARC_UA64, 0,4,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA64", false,0,MINUS_ONE, true), |
| 174 | HOWTO(R_SPARC_UA16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", false,0,0x0000ffff,true) |
| 175 | }; |
| 176 | |
| 177 | struct elf_reloc_map { |
| 178 | bfd_reloc_code_real_type bfd_reloc_val; |
| 179 | unsigned char elf_reloc_val; |
| 180 | }; |
| 181 | |
| 182 | static const struct elf_reloc_map sparc_reloc_map[] = |
| 183 | { |
| 184 | { BFD_RELOC_NONE, R_SPARC_NONE, }, |
| 185 | { BFD_RELOC_16, R_SPARC_16, }, |
| 186 | { BFD_RELOC_16_PCREL, R_SPARC_DISP16 }, |
| 187 | { BFD_RELOC_8, R_SPARC_8 }, |
| 188 | { BFD_RELOC_8_PCREL, R_SPARC_DISP8 }, |
| 189 | { BFD_RELOC_CTOR, R_SPARC_64 }, |
| 190 | { BFD_RELOC_32, R_SPARC_32 }, |
| 191 | { BFD_RELOC_32_PCREL, R_SPARC_DISP32 }, |
| 192 | { BFD_RELOC_HI22, R_SPARC_HI22 }, |
| 193 | { BFD_RELOC_LO10, R_SPARC_LO10, }, |
| 194 | { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 }, |
| 195 | { BFD_RELOC_64_PCREL, R_SPARC_DISP64 }, |
| 196 | { BFD_RELOC_SPARC22, R_SPARC_22 }, |
| 197 | { BFD_RELOC_SPARC13, R_SPARC_13 }, |
| 198 | { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 }, |
| 199 | { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 }, |
| 200 | { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 }, |
| 201 | { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 }, |
| 202 | { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 }, |
| 203 | { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 }, |
| 204 | { BFD_RELOC_SPARC_COPY, R_SPARC_COPY }, |
| 205 | { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT }, |
| 206 | { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT }, |
| 207 | { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE }, |
| 208 | { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 }, |
| 209 | { BFD_RELOC_SPARC_UA16, R_SPARC_UA16 }, |
| 210 | { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, |
| 211 | { BFD_RELOC_SPARC_UA64, R_SPARC_UA64 }, |
| 212 | { BFD_RELOC_SPARC_10, R_SPARC_10 }, |
| 213 | { BFD_RELOC_SPARC_11, R_SPARC_11 }, |
| 214 | { BFD_RELOC_SPARC_64, R_SPARC_64 }, |
| 215 | { BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10 }, |
| 216 | { BFD_RELOC_SPARC_HH22, R_SPARC_HH22 }, |
| 217 | { BFD_RELOC_SPARC_HM10, R_SPARC_HM10 }, |
| 218 | { BFD_RELOC_SPARC_LM22, R_SPARC_LM22 }, |
| 219 | { BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22 }, |
| 220 | { BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10 }, |
| 221 | { BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22 }, |
| 222 | { BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16 }, |
| 223 | { BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19 }, |
| 224 | { BFD_RELOC_SPARC_7, R_SPARC_7 }, |
| 225 | { BFD_RELOC_SPARC_5, R_SPARC_5 }, |
| 226 | { BFD_RELOC_SPARC_6, R_SPARC_6 }, |
| 227 | { BFD_RELOC_SPARC_DISP64, R_SPARC_DISP64 }, |
| 228 | #ifndef SPARC64_OLD_RELOCS |
| 229 | { BFD_RELOC_SPARC_PLT32, R_SPARC_PLT32 }, |
| 230 | #endif |
| 231 | { BFD_RELOC_SPARC_PLT64, R_SPARC_PLT64 }, |
| 232 | { BFD_RELOC_SPARC_HIX22, R_SPARC_HIX22 }, |
| 233 | { BFD_RELOC_SPARC_LOX10, R_SPARC_LOX10 }, |
| 234 | { BFD_RELOC_SPARC_H44, R_SPARC_H44 }, |
| 235 | { BFD_RELOC_SPARC_M44, R_SPARC_M44 }, |
| 236 | { BFD_RELOC_SPARC_L44, R_SPARC_L44 }, |
| 237 | { BFD_RELOC_SPARC_REGISTER, R_SPARC_REGISTER } |
| 238 | }; |
| 239 | |
| 240 | static reloc_howto_type * |
| 241 | sparc64_elf_reloc_type_lookup (abfd, code) |
| 242 | bfd *abfd ATTRIBUTE_UNUSED; |
| 243 | bfd_reloc_code_real_type code; |
| 244 | { |
| 245 | unsigned int i; |
| 246 | for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); i++) |
| 247 | { |
| 248 | if (sparc_reloc_map[i].bfd_reloc_val == code) |
| 249 | return &sparc64_elf_howto_table[(int) sparc_reloc_map[i].elf_reloc_val]; |
| 250 | } |
| 251 | return 0; |
| 252 | } |
| 253 | |
| 254 | static void |
| 255 | sparc64_elf_info_to_howto (abfd, cache_ptr, dst) |
| 256 | bfd *abfd ATTRIBUTE_UNUSED; |
| 257 | arelent *cache_ptr; |
| 258 | Elf64_Internal_Rela *dst; |
| 259 | { |
| 260 | BFD_ASSERT (ELF64_R_TYPE_ID (dst->r_info) < (unsigned int) R_SPARC_max_std); |
| 261 | cache_ptr->howto = &sparc64_elf_howto_table[ELF64_R_TYPE_ID (dst->r_info)]; |
| 262 | } |
| 263 | \f |
| 264 | /* Due to the way how we handle R_SPARC_OLO10, each entry in a SHT_RELA |
| 265 | section can represent up to two relocs, we must tell the user to allocate |
| 266 | more space. */ |
| 267 | |
| 268 | static long |
| 269 | sparc64_elf_get_reloc_upper_bound (abfd, sec) |
| 270 | bfd *abfd ATTRIBUTE_UNUSED; |
| 271 | asection *sec; |
| 272 | { |
| 273 | return (sec->reloc_count * 2 + 1) * sizeof (arelent *); |
| 274 | } |
| 275 | |
| 276 | static long |
| 277 | sparc64_elf_get_dynamic_reloc_upper_bound (abfd) |
| 278 | bfd *abfd; |
| 279 | { |
| 280 | return _bfd_elf_get_dynamic_reloc_upper_bound (abfd) * 2; |
| 281 | } |
| 282 | |
| 283 | /* Read relocations for ASECT from REL_HDR. There are RELOC_COUNT of |
| 284 | them. We cannot use generic elf routines for this, because R_SPARC_OLO10 |
| 285 | has secondary addend in ELF64_R_TYPE_DATA. We handle it as two relocations |
| 286 | for the same location, R_SPARC_LO10 and R_SPARC_13. */ |
| 287 | |
| 288 | static boolean |
| 289 | sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr, symbols, dynamic) |
| 290 | bfd *abfd; |
| 291 | asection *asect; |
| 292 | Elf_Internal_Shdr *rel_hdr; |
| 293 | asymbol **symbols; |
| 294 | boolean dynamic; |
| 295 | { |
| 296 | PTR allocated = NULL; |
| 297 | bfd_byte *native_relocs; |
| 298 | arelent *relent; |
| 299 | unsigned int i; |
| 300 | int entsize; |
| 301 | bfd_size_type count; |
| 302 | arelent *relents; |
| 303 | |
| 304 | allocated = (PTR) bfd_malloc (rel_hdr->sh_size); |
| 305 | if (allocated == NULL) |
| 306 | goto error_return; |
| 307 | |
| 308 | if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0 |
| 309 | || bfd_bread (allocated, rel_hdr->sh_size, abfd) != rel_hdr->sh_size) |
| 310 | goto error_return; |
| 311 | |
| 312 | native_relocs = (bfd_byte *) allocated; |
| 313 | |
| 314 | relents = asect->relocation + asect->reloc_count; |
| 315 | |
| 316 | entsize = rel_hdr->sh_entsize; |
| 317 | BFD_ASSERT (entsize == sizeof (Elf64_External_Rela)); |
| 318 | |
| 319 | count = rel_hdr->sh_size / entsize; |
| 320 | |
| 321 | for (i = 0, relent = relents; i < count; |
| 322 | i++, relent++, native_relocs += entsize) |
| 323 | { |
| 324 | Elf_Internal_Rela rela; |
| 325 | |
| 326 | bfd_elf64_swap_reloca_in (abfd, (Elf64_External_Rela *) native_relocs, &rela); |
| 327 | |
| 328 | /* The address of an ELF reloc is section relative for an object |
| 329 | file, and absolute for an executable file or shared library. |
| 330 | The address of a normal BFD reloc is always section relative, |
| 331 | and the address of a dynamic reloc is absolute.. */ |
| 332 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 || dynamic) |
| 333 | relent->address = rela.r_offset; |
| 334 | else |
| 335 | relent->address = rela.r_offset - asect->vma; |
| 336 | |
| 337 | if (ELF64_R_SYM (rela.r_info) == 0) |
| 338 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
| 339 | else |
| 340 | { |
| 341 | asymbol **ps, *s; |
| 342 | |
| 343 | ps = symbols + ELF64_R_SYM (rela.r_info) - 1; |
| 344 | s = *ps; |
| 345 | |
| 346 | /* Canonicalize ELF section symbols. FIXME: Why? */ |
| 347 | if ((s->flags & BSF_SECTION_SYM) == 0) |
| 348 | relent->sym_ptr_ptr = ps; |
| 349 | else |
| 350 | relent->sym_ptr_ptr = s->section->symbol_ptr_ptr; |
| 351 | } |
| 352 | |
| 353 | relent->addend = rela.r_addend; |
| 354 | |
| 355 | BFD_ASSERT (ELF64_R_TYPE_ID (rela.r_info) < (unsigned int) R_SPARC_max_std); |
| 356 | if (ELF64_R_TYPE_ID (rela.r_info) == R_SPARC_OLO10) |
| 357 | { |
| 358 | relent->howto = &sparc64_elf_howto_table[R_SPARC_LO10]; |
| 359 | relent[1].address = relent->address; |
| 360 | relent++; |
| 361 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
| 362 | relent->addend = ELF64_R_TYPE_DATA (rela.r_info); |
| 363 | relent->howto = &sparc64_elf_howto_table[R_SPARC_13]; |
| 364 | } |
| 365 | else |
| 366 | relent->howto = &sparc64_elf_howto_table[ELF64_R_TYPE_ID (rela.r_info)]; |
| 367 | } |
| 368 | |
| 369 | asect->reloc_count += relent - relents; |
| 370 | |
| 371 | if (allocated != NULL) |
| 372 | free (allocated); |
| 373 | |
| 374 | return true; |
| 375 | |
| 376 | error_return: |
| 377 | if (allocated != NULL) |
| 378 | free (allocated); |
| 379 | return false; |
| 380 | } |
| 381 | |
| 382 | /* Read in and swap the external relocs. */ |
| 383 | |
| 384 | static boolean |
| 385 | sparc64_elf_slurp_reloc_table (abfd, asect, symbols, dynamic) |
| 386 | bfd *abfd; |
| 387 | asection *asect; |
| 388 | asymbol **symbols; |
| 389 | boolean dynamic; |
| 390 | { |
| 391 | struct bfd_elf_section_data * const d = elf_section_data (asect); |
| 392 | Elf_Internal_Shdr *rel_hdr; |
| 393 | Elf_Internal_Shdr *rel_hdr2; |
| 394 | bfd_size_type amt; |
| 395 | |
| 396 | if (asect->relocation != NULL) |
| 397 | return true; |
| 398 | |
| 399 | if (! dynamic) |
| 400 | { |
| 401 | if ((asect->flags & SEC_RELOC) == 0 |
| 402 | || asect->reloc_count == 0) |
| 403 | return true; |
| 404 | |
| 405 | rel_hdr = &d->rel_hdr; |
| 406 | rel_hdr2 = d->rel_hdr2; |
| 407 | |
| 408 | BFD_ASSERT (asect->rel_filepos == rel_hdr->sh_offset |
| 409 | || (rel_hdr2 && asect->rel_filepos == rel_hdr2->sh_offset)); |
| 410 | } |
| 411 | else |
| 412 | { |
| 413 | /* Note that ASECT->RELOC_COUNT tends not to be accurate in this |
| 414 | case because relocations against this section may use the |
| 415 | dynamic symbol table, and in that case bfd_section_from_shdr |
| 416 | in elf.c does not update the RELOC_COUNT. */ |
| 417 | if (asect->_raw_size == 0) |
| 418 | return true; |
| 419 | |
| 420 | rel_hdr = &d->this_hdr; |
| 421 | asect->reloc_count = NUM_SHDR_ENTRIES (rel_hdr); |
| 422 | rel_hdr2 = NULL; |
| 423 | } |
| 424 | |
| 425 | amt = asect->reloc_count; |
| 426 | amt *= 2 * sizeof (arelent); |
| 427 | asect->relocation = (arelent *) bfd_alloc (abfd, amt); |
| 428 | if (asect->relocation == NULL) |
| 429 | return false; |
| 430 | |
| 431 | /* The sparc64_elf_slurp_one_reloc_table routine increments reloc_count. */ |
| 432 | asect->reloc_count = 0; |
| 433 | |
| 434 | if (!sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr, symbols, |
| 435 | dynamic)) |
| 436 | return false; |
| 437 | |
| 438 | if (rel_hdr2 |
| 439 | && !sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr2, symbols, |
| 440 | dynamic)) |
| 441 | return false; |
| 442 | |
| 443 | return true; |
| 444 | } |
| 445 | |
| 446 | /* Canonicalize the dynamic relocation entries. Note that we return |
| 447 | the dynamic relocations as a single block, although they are |
| 448 | actually associated with particular sections; the interface, which |
| 449 | was designed for SunOS style shared libraries, expects that there |
| 450 | is only one set of dynamic relocs. Any section that was actually |
| 451 | installed in the BFD, and has type SHT_REL or SHT_RELA, and uses |
| 452 | the dynamic symbol table, is considered to be a dynamic reloc |
| 453 | section. */ |
| 454 | |
| 455 | static long |
| 456 | sparc64_elf_canonicalize_dynamic_reloc (abfd, storage, syms) |
| 457 | bfd *abfd; |
| 458 | arelent **storage; |
| 459 | asymbol **syms; |
| 460 | { |
| 461 | asection *s; |
| 462 | long ret; |
| 463 | |
| 464 | if (elf_dynsymtab (abfd) == 0) |
| 465 | { |
| 466 | bfd_set_error (bfd_error_invalid_operation); |
| 467 | return -1; |
| 468 | } |
| 469 | |
| 470 | ret = 0; |
| 471 | for (s = abfd->sections; s != NULL; s = s->next) |
| 472 | { |
| 473 | if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) |
| 474 | && (elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) |
| 475 | { |
| 476 | arelent *p; |
| 477 | long count, i; |
| 478 | |
| 479 | if (! sparc64_elf_slurp_reloc_table (abfd, s, syms, true)) |
| 480 | return -1; |
| 481 | count = s->reloc_count; |
| 482 | p = s->relocation; |
| 483 | for (i = 0; i < count; i++) |
| 484 | *storage++ = p++; |
| 485 | ret += count; |
| 486 | } |
| 487 | } |
| 488 | |
| 489 | *storage = NULL; |
| 490 | |
| 491 | return ret; |
| 492 | } |
| 493 | |
| 494 | /* Write out the relocs. */ |
| 495 | |
| 496 | static void |
| 497 | sparc64_elf_write_relocs (abfd, sec, data) |
| 498 | bfd *abfd; |
| 499 | asection *sec; |
| 500 | PTR data; |
| 501 | { |
| 502 | boolean *failedp = (boolean *) data; |
| 503 | Elf_Internal_Shdr *rela_hdr; |
| 504 | Elf64_External_Rela *outbound_relocas, *src_rela; |
| 505 | unsigned int idx, count; |
| 506 | asymbol *last_sym = 0; |
| 507 | int last_sym_idx = 0; |
| 508 | |
| 509 | /* If we have already failed, don't do anything. */ |
| 510 | if (*failedp) |
| 511 | return; |
| 512 | |
| 513 | if ((sec->flags & SEC_RELOC) == 0) |
| 514 | return; |
| 515 | |
| 516 | /* The linker backend writes the relocs out itself, and sets the |
| 517 | reloc_count field to zero to inhibit writing them here. Also, |
| 518 | sometimes the SEC_RELOC flag gets set even when there aren't any |
| 519 | relocs. */ |
| 520 | if (sec->reloc_count == 0) |
| 521 | return; |
| 522 | |
| 523 | /* We can combine two relocs that refer to the same address |
| 524 | into R_SPARC_OLO10 if first one is R_SPARC_LO10 and the |
| 525 | latter is R_SPARC_13 with no associated symbol. */ |
| 526 | count = 0; |
| 527 | for (idx = 0; idx < sec->reloc_count; idx++) |
| 528 | { |
| 529 | bfd_vma addr; |
| 530 | |
| 531 | ++count; |
| 532 | |
| 533 | addr = sec->orelocation[idx]->address; |
| 534 | if (sec->orelocation[idx]->howto->type == R_SPARC_LO10 |
| 535 | && idx < sec->reloc_count - 1) |
| 536 | { |
| 537 | arelent *r = sec->orelocation[idx + 1]; |
| 538 | |
| 539 | if (r->howto->type == R_SPARC_13 |
| 540 | && r->address == addr |
| 541 | && bfd_is_abs_section ((*r->sym_ptr_ptr)->section) |
| 542 | && (*r->sym_ptr_ptr)->value == 0) |
| 543 | ++idx; |
| 544 | } |
| 545 | } |
| 546 | |
| 547 | rela_hdr = &elf_section_data (sec)->rel_hdr; |
| 548 | |
| 549 | rela_hdr->sh_size = rela_hdr->sh_entsize * count; |
| 550 | rela_hdr->contents = (PTR) bfd_alloc (abfd, rela_hdr->sh_size); |
| 551 | if (rela_hdr->contents == NULL) |
| 552 | { |
| 553 | *failedp = true; |
| 554 | return; |
| 555 | } |
| 556 | |
| 557 | /* Figure out whether the relocations are RELA or REL relocations. */ |
| 558 | if (rela_hdr->sh_type != SHT_RELA) |
| 559 | abort (); |
| 560 | |
| 561 | /* orelocation has the data, reloc_count has the count... */ |
| 562 | outbound_relocas = (Elf64_External_Rela *) rela_hdr->contents; |
| 563 | src_rela = outbound_relocas; |
| 564 | |
| 565 | for (idx = 0; idx < sec->reloc_count; idx++) |
| 566 | { |
| 567 | Elf_Internal_Rela dst_rela; |
| 568 | arelent *ptr; |
| 569 | asymbol *sym; |
| 570 | int n; |
| 571 | |
| 572 | ptr = sec->orelocation[idx]; |
| 573 | |
| 574 | /* The address of an ELF reloc is section relative for an object |
| 575 | file, and absolute for an executable file or shared library. |
| 576 | The address of a BFD reloc is always section relative. */ |
| 577 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) |
| 578 | dst_rela.r_offset = ptr->address; |
| 579 | else |
| 580 | dst_rela.r_offset = ptr->address + sec->vma; |
| 581 | |
| 582 | sym = *ptr->sym_ptr_ptr; |
| 583 | if (sym == last_sym) |
| 584 | n = last_sym_idx; |
| 585 | else if (bfd_is_abs_section (sym->section) && sym->value == 0) |
| 586 | n = STN_UNDEF; |
| 587 | else |
| 588 | { |
| 589 | last_sym = sym; |
| 590 | n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym); |
| 591 | if (n < 0) |
| 592 | { |
| 593 | *failedp = true; |
| 594 | return; |
| 595 | } |
| 596 | last_sym_idx = n; |
| 597 | } |
| 598 | |
| 599 | if ((*ptr->sym_ptr_ptr)->the_bfd != NULL |
| 600 | && (*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec |
| 601 | && ! _bfd_elf_validate_reloc (abfd, ptr)) |
| 602 | { |
| 603 | *failedp = true; |
| 604 | return; |
| 605 | } |
| 606 | |
| 607 | if (ptr->howto->type == R_SPARC_LO10 |
| 608 | && idx < sec->reloc_count - 1) |
| 609 | { |
| 610 | arelent *r = sec->orelocation[idx + 1]; |
| 611 | |
| 612 | if (r->howto->type == R_SPARC_13 |
| 613 | && r->address == ptr->address |
| 614 | && bfd_is_abs_section ((*r->sym_ptr_ptr)->section) |
| 615 | && (*r->sym_ptr_ptr)->value == 0) |
| 616 | { |
| 617 | idx++; |
| 618 | dst_rela.r_info |
| 619 | = ELF64_R_INFO (n, ELF64_R_TYPE_INFO (r->addend, |
| 620 | R_SPARC_OLO10)); |
| 621 | } |
| 622 | else |
| 623 | dst_rela.r_info = ELF64_R_INFO (n, R_SPARC_LO10); |
| 624 | } |
| 625 | else |
| 626 | dst_rela.r_info = ELF64_R_INFO (n, ptr->howto->type); |
| 627 | |
| 628 | dst_rela.r_addend = ptr->addend; |
| 629 | bfd_elf64_swap_reloca_out (abfd, &dst_rela, src_rela); |
| 630 | ++src_rela; |
| 631 | } |
| 632 | } |
| 633 | \f |
| 634 | /* Sparc64 ELF linker hash table. */ |
| 635 | |
| 636 | struct sparc64_elf_app_reg |
| 637 | { |
| 638 | unsigned char bind; |
| 639 | unsigned short shndx; |
| 640 | bfd *abfd; |
| 641 | char *name; |
| 642 | }; |
| 643 | |
| 644 | struct sparc64_elf_link_hash_table |
| 645 | { |
| 646 | struct elf_link_hash_table root; |
| 647 | |
| 648 | struct sparc64_elf_app_reg app_regs [4]; |
| 649 | }; |
| 650 | |
| 651 | /* Get the Sparc64 ELF linker hash table from a link_info structure. */ |
| 652 | |
| 653 | #define sparc64_elf_hash_table(p) \ |
| 654 | ((struct sparc64_elf_link_hash_table *) ((p)->hash)) |
| 655 | |
| 656 | /* Create a Sparc64 ELF linker hash table. */ |
| 657 | |
| 658 | static struct bfd_link_hash_table * |
| 659 | sparc64_elf_bfd_link_hash_table_create (abfd) |
| 660 | bfd *abfd; |
| 661 | { |
| 662 | struct sparc64_elf_link_hash_table *ret; |
| 663 | bfd_size_type amt = sizeof (struct sparc64_elf_link_hash_table); |
| 664 | |
| 665 | ret = (struct sparc64_elf_link_hash_table *) bfd_zmalloc (amt); |
| 666 | if (ret == (struct sparc64_elf_link_hash_table *) NULL) |
| 667 | return NULL; |
| 668 | |
| 669 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, |
| 670 | _bfd_elf_link_hash_newfunc)) |
| 671 | { |
| 672 | free (ret); |
| 673 | return NULL; |
| 674 | } |
| 675 | |
| 676 | return &ret->root.root; |
| 677 | } |
| 678 | \f |
| 679 | /* Utility for performing the standard initial work of an instruction |
| 680 | relocation. |
| 681 | *PRELOCATION will contain the relocated item. |
| 682 | *PINSN will contain the instruction from the input stream. |
| 683 | If the result is `bfd_reloc_other' the caller can continue with |
| 684 | performing the relocation. Otherwise it must stop and return the |
| 685 | value to its caller. */ |
| 686 | |
| 687 | static bfd_reloc_status_type |
| 688 | init_insn_reloc (abfd, |
| 689 | reloc_entry, |
| 690 | symbol, |
| 691 | data, |
| 692 | input_section, |
| 693 | output_bfd, |
| 694 | prelocation, |
| 695 | pinsn) |
| 696 | bfd *abfd; |
| 697 | arelent *reloc_entry; |
| 698 | asymbol *symbol; |
| 699 | PTR data; |
| 700 | asection *input_section; |
| 701 | bfd *output_bfd; |
| 702 | bfd_vma *prelocation; |
| 703 | bfd_vma *pinsn; |
| 704 | { |
| 705 | bfd_vma relocation; |
| 706 | reloc_howto_type *howto = reloc_entry->howto; |
| 707 | |
| 708 | if (output_bfd != (bfd *) NULL |
| 709 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 710 | && (! howto->partial_inplace |
| 711 | || reloc_entry->addend == 0)) |
| 712 | { |
| 713 | reloc_entry->address += input_section->output_offset; |
| 714 | return bfd_reloc_ok; |
| 715 | } |
| 716 | |
| 717 | /* This works because partial_inplace is false. */ |
| 718 | if (output_bfd != NULL) |
| 719 | return bfd_reloc_continue; |
| 720 | |
| 721 | if (reloc_entry->address > input_section->_cooked_size) |
| 722 | return bfd_reloc_outofrange; |
| 723 | |
| 724 | relocation = (symbol->value |
| 725 | + symbol->section->output_section->vma |
| 726 | + symbol->section->output_offset); |
| 727 | relocation += reloc_entry->addend; |
| 728 | if (howto->pc_relative) |
| 729 | { |
| 730 | relocation -= (input_section->output_section->vma |
| 731 | + input_section->output_offset); |
| 732 | relocation -= reloc_entry->address; |
| 733 | } |
| 734 | |
| 735 | *prelocation = relocation; |
| 736 | *pinsn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); |
| 737 | return bfd_reloc_other; |
| 738 | } |
| 739 | |
| 740 | /* For unsupported relocs. */ |
| 741 | |
| 742 | static bfd_reloc_status_type |
| 743 | sparc_elf_notsup_reloc (abfd, |
| 744 | reloc_entry, |
| 745 | symbol, |
| 746 | data, |
| 747 | input_section, |
| 748 | output_bfd, |
| 749 | error_message) |
| 750 | bfd *abfd ATTRIBUTE_UNUSED; |
| 751 | arelent *reloc_entry ATTRIBUTE_UNUSED; |
| 752 | asymbol *symbol ATTRIBUTE_UNUSED; |
| 753 | PTR data ATTRIBUTE_UNUSED; |
| 754 | asection *input_section ATTRIBUTE_UNUSED; |
| 755 | bfd *output_bfd ATTRIBUTE_UNUSED; |
| 756 | char **error_message ATTRIBUTE_UNUSED; |
| 757 | { |
| 758 | return bfd_reloc_notsupported; |
| 759 | } |
| 760 | |
| 761 | /* Handle the WDISP16 reloc. */ |
| 762 | |
| 763 | static bfd_reloc_status_type |
| 764 | sparc_elf_wdisp16_reloc (abfd, reloc_entry, symbol, data, input_section, |
| 765 | output_bfd, error_message) |
| 766 | bfd *abfd; |
| 767 | arelent *reloc_entry; |
| 768 | asymbol *symbol; |
| 769 | PTR data; |
| 770 | asection *input_section; |
| 771 | bfd *output_bfd; |
| 772 | char **error_message ATTRIBUTE_UNUSED; |
| 773 | { |
| 774 | bfd_vma relocation; |
| 775 | bfd_vma insn; |
| 776 | bfd_reloc_status_type status; |
| 777 | |
| 778 | status = init_insn_reloc (abfd, reloc_entry, symbol, data, |
| 779 | input_section, output_bfd, &relocation, &insn); |
| 780 | if (status != bfd_reloc_other) |
| 781 | return status; |
| 782 | |
| 783 | insn &= ~ (bfd_vma) 0x303fff; |
| 784 | insn |= (((relocation >> 2) & 0xc000) << 6) | ((relocation >> 2) & 0x3fff); |
| 785 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); |
| 786 | |
| 787 | if ((bfd_signed_vma) relocation < - 0x40000 |
| 788 | || (bfd_signed_vma) relocation > 0x3ffff) |
| 789 | return bfd_reloc_overflow; |
| 790 | else |
| 791 | return bfd_reloc_ok; |
| 792 | } |
| 793 | |
| 794 | /* Handle the HIX22 reloc. */ |
| 795 | |
| 796 | static bfd_reloc_status_type |
| 797 | sparc_elf_hix22_reloc (abfd, |
| 798 | reloc_entry, |
| 799 | symbol, |
| 800 | data, |
| 801 | input_section, |
| 802 | output_bfd, |
| 803 | error_message) |
| 804 | bfd *abfd; |
| 805 | arelent *reloc_entry; |
| 806 | asymbol *symbol; |
| 807 | PTR data; |
| 808 | asection *input_section; |
| 809 | bfd *output_bfd; |
| 810 | char **error_message ATTRIBUTE_UNUSED; |
| 811 | { |
| 812 | bfd_vma relocation; |
| 813 | bfd_vma insn; |
| 814 | bfd_reloc_status_type status; |
| 815 | |
| 816 | status = init_insn_reloc (abfd, reloc_entry, symbol, data, |
| 817 | input_section, output_bfd, &relocation, &insn); |
| 818 | if (status != bfd_reloc_other) |
| 819 | return status; |
| 820 | |
| 821 | relocation ^= MINUS_ONE; |
| 822 | insn = (insn &~ (bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff); |
| 823 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); |
| 824 | |
| 825 | if ((relocation & ~ (bfd_vma) 0xffffffff) != 0) |
| 826 | return bfd_reloc_overflow; |
| 827 | else |
| 828 | return bfd_reloc_ok; |
| 829 | } |
| 830 | |
| 831 | /* Handle the LOX10 reloc. */ |
| 832 | |
| 833 | static bfd_reloc_status_type |
| 834 | sparc_elf_lox10_reloc (abfd, |
| 835 | reloc_entry, |
| 836 | symbol, |
| 837 | data, |
| 838 | input_section, |
| 839 | output_bfd, |
| 840 | error_message) |
| 841 | bfd *abfd; |
| 842 | arelent *reloc_entry; |
| 843 | asymbol *symbol; |
| 844 | PTR data; |
| 845 | asection *input_section; |
| 846 | bfd *output_bfd; |
| 847 | char **error_message ATTRIBUTE_UNUSED; |
| 848 | { |
| 849 | bfd_vma relocation; |
| 850 | bfd_vma insn; |
| 851 | bfd_reloc_status_type status; |
| 852 | |
| 853 | status = init_insn_reloc (abfd, reloc_entry, symbol, data, |
| 854 | input_section, output_bfd, &relocation, &insn); |
| 855 | if (status != bfd_reloc_other) |
| 856 | return status; |
| 857 | |
| 858 | insn = (insn &~ (bfd_vma) 0x1fff) | 0x1c00 | (relocation & 0x3ff); |
| 859 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); |
| 860 | |
| 861 | return bfd_reloc_ok; |
| 862 | } |
| 863 | \f |
| 864 | /* PLT/GOT stuff */ |
| 865 | |
| 866 | /* Both the headers and the entries are icache aligned. */ |
| 867 | #define PLT_ENTRY_SIZE 32 |
| 868 | #define PLT_HEADER_SIZE (4 * PLT_ENTRY_SIZE) |
| 869 | #define LARGE_PLT_THRESHOLD 32768 |
| 870 | #define GOT_RESERVED_ENTRIES 1 |
| 871 | |
| 872 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1" |
| 873 | |
| 874 | /* Fill in the .plt section. */ |
| 875 | |
| 876 | static void |
| 877 | sparc64_elf_build_plt (output_bfd, contents, nentries) |
| 878 | bfd *output_bfd; |
| 879 | unsigned char *contents; |
| 880 | int nentries; |
| 881 | { |
| 882 | const unsigned int nop = 0x01000000; |
| 883 | int i, j; |
| 884 | |
| 885 | /* The first four entries are reserved, and are initially undefined. |
| 886 | We fill them with `illtrap 0' to force ld.so to do something. */ |
| 887 | |
| 888 | for (i = 0; i < PLT_HEADER_SIZE/4; ++i) |
| 889 | bfd_put_32 (output_bfd, (bfd_vma) 0, contents+i*4); |
| 890 | |
| 891 | /* The first 32768 entries are close enough to plt1 to get there via |
| 892 | a straight branch. */ |
| 893 | |
| 894 | for (i = 4; i < LARGE_PLT_THRESHOLD && i < nentries; ++i) |
| 895 | { |
| 896 | unsigned char *entry = contents + i * PLT_ENTRY_SIZE; |
| 897 | unsigned int sethi, ba; |
| 898 | |
| 899 | /* sethi (. - plt0), %g1 */ |
| 900 | sethi = 0x03000000 | (i * PLT_ENTRY_SIZE); |
| 901 | |
| 902 | /* ba,a,pt %xcc, plt1 */ |
| 903 | ba = 0x30680000 | (((contents+PLT_ENTRY_SIZE) - (entry+4)) / 4 & 0x7ffff); |
| 904 | |
| 905 | bfd_put_32 (output_bfd, (bfd_vma) sethi, entry); |
| 906 | bfd_put_32 (output_bfd, (bfd_vma) ba, entry + 4); |
| 907 | bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 8); |
| 908 | bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 12); |
| 909 | bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 16); |
| 910 | bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 20); |
| 911 | bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 24); |
| 912 | bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 28); |
| 913 | } |
| 914 | |
| 915 | /* Now the tricky bit. Entries 32768 and higher are grouped in blocks of |
| 916 | 160: 160 entries and 160 pointers. This is to separate code from data, |
| 917 | which is much friendlier on the cache. */ |
| 918 | |
| 919 | for (; i < nentries; i += 160) |
| 920 | { |
| 921 | int block = (i + 160 <= nentries ? 160 : nentries - i); |
| 922 | for (j = 0; j < block; ++j) |
| 923 | { |
| 924 | unsigned char *entry, *ptr; |
| 925 | unsigned int ldx; |
| 926 | |
| 927 | entry = contents + i*PLT_ENTRY_SIZE + j*4*6; |
| 928 | ptr = contents + i*PLT_ENTRY_SIZE + block*4*6 + j*8; |
| 929 | |
| 930 | /* ldx [%o7 + ptr - (entry+4)], %g1 */ |
| 931 | ldx = 0xc25be000 | ((ptr - (entry+4)) & 0x1fff); |
| 932 | |
| 933 | /* mov %o7,%g5 |
| 934 | call .+8 |
| 935 | nop |
| 936 | ldx [%o7+P],%g1 |
| 937 | jmpl %o7+%g1,%g1 |
| 938 | mov %g5,%o7 */ |
| 939 | bfd_put_32 (output_bfd, (bfd_vma) 0x8a10000f, entry); |
| 940 | bfd_put_32 (output_bfd, (bfd_vma) 0x40000002, entry + 4); |
| 941 | bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 8); |
| 942 | bfd_put_32 (output_bfd, (bfd_vma) ldx, entry + 12); |
| 943 | bfd_put_32 (output_bfd, (bfd_vma) 0x83c3c001, entry + 16); |
| 944 | bfd_put_32 (output_bfd, (bfd_vma) 0x9e100005, entry + 20); |
| 945 | |
| 946 | bfd_put_64 (output_bfd, (bfd_vma) (contents - (entry + 4)), ptr); |
| 947 | } |
| 948 | } |
| 949 | } |
| 950 | |
| 951 | /* Return the offset of a particular plt entry within the .plt section. */ |
| 952 | |
| 953 | static bfd_vma |
| 954 | sparc64_elf_plt_entry_offset (index) |
| 955 | bfd_vma index; |
| 956 | { |
| 957 | bfd_vma block, ofs; |
| 958 | |
| 959 | if (index < LARGE_PLT_THRESHOLD) |
| 960 | return index * PLT_ENTRY_SIZE; |
| 961 | |
| 962 | /* See above for details. */ |
| 963 | |
| 964 | block = (index - LARGE_PLT_THRESHOLD) / 160; |
| 965 | ofs = (index - LARGE_PLT_THRESHOLD) % 160; |
| 966 | |
| 967 | return (LARGE_PLT_THRESHOLD + block * 160) * PLT_ENTRY_SIZE + ofs * 6 * 4; |
| 968 | } |
| 969 | |
| 970 | static bfd_vma |
| 971 | sparc64_elf_plt_ptr_offset (index, max) |
| 972 | bfd_vma index; |
| 973 | bfd_vma max; |
| 974 | { |
| 975 | bfd_vma block, ofs, last; |
| 976 | |
| 977 | BFD_ASSERT(index >= LARGE_PLT_THRESHOLD); |
| 978 | |
| 979 | /* See above for details. */ |
| 980 | |
| 981 | block = (((index - LARGE_PLT_THRESHOLD) / 160) * 160) + LARGE_PLT_THRESHOLD; |
| 982 | ofs = index - block; |
| 983 | if (block + 160 > max) |
| 984 | last = (max - LARGE_PLT_THRESHOLD) % 160; |
| 985 | else |
| 986 | last = 160; |
| 987 | |
| 988 | return (block * PLT_ENTRY_SIZE |
| 989 | + last * 6*4 |
| 990 | + ofs * 8); |
| 991 | } |
| 992 | \f |
| 993 | /* Look through the relocs for a section during the first phase, and |
| 994 | allocate space in the global offset table or procedure linkage |
| 995 | table. */ |
| 996 | |
| 997 | static boolean |
| 998 | sparc64_elf_check_relocs (abfd, info, sec, relocs) |
| 999 | bfd *abfd; |
| 1000 | struct bfd_link_info *info; |
| 1001 | asection *sec; |
| 1002 | const Elf_Internal_Rela *relocs; |
| 1003 | { |
| 1004 | bfd *dynobj; |
| 1005 | Elf_Internal_Shdr *symtab_hdr; |
| 1006 | struct elf_link_hash_entry **sym_hashes; |
| 1007 | bfd_vma *local_got_offsets; |
| 1008 | const Elf_Internal_Rela *rel; |
| 1009 | const Elf_Internal_Rela *rel_end; |
| 1010 | asection *sgot; |
| 1011 | asection *srelgot; |
| 1012 | asection *sreloc; |
| 1013 | |
| 1014 | if (info->relocateable || !(sec->flags & SEC_ALLOC)) |
| 1015 | return true; |
| 1016 | |
| 1017 | dynobj = elf_hash_table (info)->dynobj; |
| 1018 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 1019 | sym_hashes = elf_sym_hashes (abfd); |
| 1020 | local_got_offsets = elf_local_got_offsets (abfd); |
| 1021 | |
| 1022 | sgot = NULL; |
| 1023 | srelgot = NULL; |
| 1024 | sreloc = NULL; |
| 1025 | |
| 1026 | rel_end = relocs + NUM_SHDR_ENTRIES (& elf_section_data (sec)->rel_hdr); |
| 1027 | for (rel = relocs; rel < rel_end; rel++) |
| 1028 | { |
| 1029 | unsigned long r_symndx; |
| 1030 | struct elf_link_hash_entry *h; |
| 1031 | |
| 1032 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 1033 | if (r_symndx < symtab_hdr->sh_info) |
| 1034 | h = NULL; |
| 1035 | else |
| 1036 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 1037 | |
| 1038 | switch (ELF64_R_TYPE_ID (rel->r_info)) |
| 1039 | { |
| 1040 | case R_SPARC_GOT10: |
| 1041 | case R_SPARC_GOT13: |
| 1042 | case R_SPARC_GOT22: |
| 1043 | /* This symbol requires a global offset table entry. */ |
| 1044 | |
| 1045 | if (dynobj == NULL) |
| 1046 | { |
| 1047 | /* Create the .got section. */ |
| 1048 | elf_hash_table (info)->dynobj = dynobj = abfd; |
| 1049 | if (! _bfd_elf_create_got_section (dynobj, info)) |
| 1050 | return false; |
| 1051 | } |
| 1052 | |
| 1053 | if (sgot == NULL) |
| 1054 | { |
| 1055 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 1056 | BFD_ASSERT (sgot != NULL); |
| 1057 | } |
| 1058 | |
| 1059 | if (srelgot == NULL && (h != NULL || info->shared)) |
| 1060 | { |
| 1061 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 1062 | if (srelgot == NULL) |
| 1063 | { |
| 1064 | srelgot = bfd_make_section (dynobj, ".rela.got"); |
| 1065 | if (srelgot == NULL |
| 1066 | || ! bfd_set_section_flags (dynobj, srelgot, |
| 1067 | (SEC_ALLOC |
| 1068 | | SEC_LOAD |
| 1069 | | SEC_HAS_CONTENTS |
| 1070 | | SEC_IN_MEMORY |
| 1071 | | SEC_LINKER_CREATED |
| 1072 | | SEC_READONLY)) |
| 1073 | || ! bfd_set_section_alignment (dynobj, srelgot, 3)) |
| 1074 | return false; |
| 1075 | } |
| 1076 | } |
| 1077 | |
| 1078 | if (h != NULL) |
| 1079 | { |
| 1080 | if (h->got.offset != (bfd_vma) -1) |
| 1081 | { |
| 1082 | /* We have already allocated space in the .got. */ |
| 1083 | break; |
| 1084 | } |
| 1085 | h->got.offset = sgot->_raw_size; |
| 1086 | |
| 1087 | /* Make sure this symbol is output as a dynamic symbol. */ |
| 1088 | if (h->dynindx == -1) |
| 1089 | { |
| 1090 | if (! bfd_elf64_link_record_dynamic_symbol (info, h)) |
| 1091 | return false; |
| 1092 | } |
| 1093 | |
| 1094 | srelgot->_raw_size += sizeof (Elf64_External_Rela); |
| 1095 | } |
| 1096 | else |
| 1097 | { |
| 1098 | /* This is a global offset table entry for a local |
| 1099 | symbol. */ |
| 1100 | if (local_got_offsets == NULL) |
| 1101 | { |
| 1102 | bfd_size_type size; |
| 1103 | register unsigned int i; |
| 1104 | |
| 1105 | size = symtab_hdr->sh_info; |
| 1106 | size *= sizeof (bfd_vma); |
| 1107 | local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size); |
| 1108 | if (local_got_offsets == NULL) |
| 1109 | return false; |
| 1110 | elf_local_got_offsets (abfd) = local_got_offsets; |
| 1111 | for (i = 0; i < symtab_hdr->sh_info; i++) |
| 1112 | local_got_offsets[i] = (bfd_vma) -1; |
| 1113 | } |
| 1114 | if (local_got_offsets[r_symndx] != (bfd_vma) -1) |
| 1115 | { |
| 1116 | /* We have already allocated space in the .got. */ |
| 1117 | break; |
| 1118 | } |
| 1119 | local_got_offsets[r_symndx] = sgot->_raw_size; |
| 1120 | |
| 1121 | if (info->shared) |
| 1122 | { |
| 1123 | /* If we are generating a shared object, we need to |
| 1124 | output a R_SPARC_RELATIVE reloc so that the |
| 1125 | dynamic linker can adjust this GOT entry. */ |
| 1126 | srelgot->_raw_size += sizeof (Elf64_External_Rela); |
| 1127 | } |
| 1128 | } |
| 1129 | |
| 1130 | sgot->_raw_size += 8; |
| 1131 | |
| 1132 | #if 0 |
| 1133 | /* Doesn't work for 64-bit -fPIC, since sethi/or builds |
| 1134 | unsigned numbers. If we permit ourselves to modify |
| 1135 | code so we get sethi/xor, this could work. |
| 1136 | Question: do we consider conditionally re-enabling |
| 1137 | this for -fpic, once we know about object code models? */ |
| 1138 | /* If the .got section is more than 0x1000 bytes, we add |
| 1139 | 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13 |
| 1140 | bit relocations have a greater chance of working. */ |
| 1141 | if (sgot->_raw_size >= 0x1000 |
| 1142 | && elf_hash_table (info)->hgot->root.u.def.value == 0) |
| 1143 | elf_hash_table (info)->hgot->root.u.def.value = 0x1000; |
| 1144 | #endif |
| 1145 | |
| 1146 | break; |
| 1147 | |
| 1148 | case R_SPARC_WPLT30: |
| 1149 | case R_SPARC_PLT32: |
| 1150 | case R_SPARC_HIPLT22: |
| 1151 | case R_SPARC_LOPLT10: |
| 1152 | case R_SPARC_PCPLT32: |
| 1153 | case R_SPARC_PCPLT22: |
| 1154 | case R_SPARC_PCPLT10: |
| 1155 | case R_SPARC_PLT64: |
| 1156 | /* This symbol requires a procedure linkage table entry. We |
| 1157 | actually build the entry in adjust_dynamic_symbol, |
| 1158 | because this might be a case of linking PIC code without |
| 1159 | linking in any dynamic objects, in which case we don't |
| 1160 | need to generate a procedure linkage table after all. */ |
| 1161 | |
| 1162 | if (h == NULL) |
| 1163 | { |
| 1164 | /* It does not make sense to have a procedure linkage |
| 1165 | table entry for a local symbol. */ |
| 1166 | bfd_set_error (bfd_error_bad_value); |
| 1167 | return false; |
| 1168 | } |
| 1169 | |
| 1170 | /* Make sure this symbol is output as a dynamic symbol. */ |
| 1171 | if (h->dynindx == -1) |
| 1172 | { |
| 1173 | if (! bfd_elf64_link_record_dynamic_symbol (info, h)) |
| 1174 | return false; |
| 1175 | } |
| 1176 | |
| 1177 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; |
| 1178 | if (ELF64_R_TYPE_ID (rel->r_info) != R_SPARC_PLT32 |
| 1179 | && ELF64_R_TYPE_ID (rel->r_info) != R_SPARC_PLT64) |
| 1180 | break; |
| 1181 | /* Fall through. */ |
| 1182 | case R_SPARC_PC10: |
| 1183 | case R_SPARC_PC22: |
| 1184 | case R_SPARC_PC_HH22: |
| 1185 | case R_SPARC_PC_HM10: |
| 1186 | case R_SPARC_PC_LM22: |
| 1187 | if (h != NULL |
| 1188 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) |
| 1189 | break; |
| 1190 | /* Fall through. */ |
| 1191 | case R_SPARC_DISP8: |
| 1192 | case R_SPARC_DISP16: |
| 1193 | case R_SPARC_DISP32: |
| 1194 | case R_SPARC_DISP64: |
| 1195 | case R_SPARC_WDISP30: |
| 1196 | case R_SPARC_WDISP22: |
| 1197 | case R_SPARC_WDISP19: |
| 1198 | case R_SPARC_WDISP16: |
| 1199 | if (h == NULL) |
| 1200 | break; |
| 1201 | /* Fall through. */ |
| 1202 | case R_SPARC_8: |
| 1203 | case R_SPARC_16: |
| 1204 | case R_SPARC_32: |
| 1205 | case R_SPARC_HI22: |
| 1206 | case R_SPARC_22: |
| 1207 | case R_SPARC_13: |
| 1208 | case R_SPARC_LO10: |
| 1209 | case R_SPARC_UA32: |
| 1210 | case R_SPARC_10: |
| 1211 | case R_SPARC_11: |
| 1212 | case R_SPARC_64: |
| 1213 | case R_SPARC_OLO10: |
| 1214 | case R_SPARC_HH22: |
| 1215 | case R_SPARC_HM10: |
| 1216 | case R_SPARC_LM22: |
| 1217 | case R_SPARC_7: |
| 1218 | case R_SPARC_5: |
| 1219 | case R_SPARC_6: |
| 1220 | case R_SPARC_HIX22: |
| 1221 | case R_SPARC_LOX10: |
| 1222 | case R_SPARC_H44: |
| 1223 | case R_SPARC_M44: |
| 1224 | case R_SPARC_L44: |
| 1225 | case R_SPARC_UA64: |
| 1226 | case R_SPARC_UA16: |
| 1227 | /* When creating a shared object, we must copy these relocs |
| 1228 | into the output file. We create a reloc section in |
| 1229 | dynobj and make room for the reloc. |
| 1230 | |
| 1231 | But don't do this for debugging sections -- this shows up |
| 1232 | with DWARF2 -- first because they are not loaded, and |
| 1233 | second because DWARF sez the debug info is not to be |
| 1234 | biased by the load address. */ |
| 1235 | if (info->shared && (sec->flags & SEC_ALLOC)) |
| 1236 | { |
| 1237 | if (sreloc == NULL) |
| 1238 | { |
| 1239 | const char *name; |
| 1240 | |
| 1241 | name = (bfd_elf_string_from_elf_section |
| 1242 | (abfd, |
| 1243 | elf_elfheader (abfd)->e_shstrndx, |
| 1244 | elf_section_data (sec)->rel_hdr.sh_name)); |
| 1245 | if (name == NULL) |
| 1246 | return false; |
| 1247 | |
| 1248 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 |
| 1249 | && strcmp (bfd_get_section_name (abfd, sec), |
| 1250 | name + 5) == 0); |
| 1251 | |
| 1252 | sreloc = bfd_get_section_by_name (dynobj, name); |
| 1253 | if (sreloc == NULL) |
| 1254 | { |
| 1255 | flagword flags; |
| 1256 | |
| 1257 | sreloc = bfd_make_section (dynobj, name); |
| 1258 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
| 1259 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); |
| 1260 | if ((sec->flags & SEC_ALLOC) != 0) |
| 1261 | flags |= SEC_ALLOC | SEC_LOAD; |
| 1262 | if (sreloc == NULL |
| 1263 | || ! bfd_set_section_flags (dynobj, sreloc, flags) |
| 1264 | || ! bfd_set_section_alignment (dynobj, sreloc, 3)) |
| 1265 | return false; |
| 1266 | } |
| 1267 | if (sec->flags & SEC_READONLY) |
| 1268 | info->flags |= DF_TEXTREL; |
| 1269 | } |
| 1270 | |
| 1271 | sreloc->_raw_size += sizeof (Elf64_External_Rela); |
| 1272 | } |
| 1273 | break; |
| 1274 | |
| 1275 | case R_SPARC_REGISTER: |
| 1276 | /* Nothing to do. */ |
| 1277 | break; |
| 1278 | |
| 1279 | default: |
| 1280 | (*_bfd_error_handler) (_("%s: check_relocs: unhandled reloc type %d"), |
| 1281 | bfd_archive_filename (abfd), |
| 1282 | ELF64_R_TYPE_ID (rel->r_info)); |
| 1283 | return false; |
| 1284 | } |
| 1285 | } |
| 1286 | |
| 1287 | return true; |
| 1288 | } |
| 1289 | |
| 1290 | /* Hook called by the linker routine which adds symbols from an object |
| 1291 | file. We use it for STT_REGISTER symbols. */ |
| 1292 | |
| 1293 | static boolean |
| 1294 | sparc64_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) |
| 1295 | bfd *abfd; |
| 1296 | struct bfd_link_info *info; |
| 1297 | const Elf_Internal_Sym *sym; |
| 1298 | const char **namep; |
| 1299 | flagword *flagsp ATTRIBUTE_UNUSED; |
| 1300 | asection **secp ATTRIBUTE_UNUSED; |
| 1301 | bfd_vma *valp ATTRIBUTE_UNUSED; |
| 1302 | { |
| 1303 | static const char *const stt_types[] = { "NOTYPE", "OBJECT", "FUNCTION" }; |
| 1304 | |
| 1305 | if (ELF_ST_TYPE (sym->st_info) == STT_REGISTER) |
| 1306 | { |
| 1307 | int reg; |
| 1308 | struct sparc64_elf_app_reg *p; |
| 1309 | |
| 1310 | reg = (int)sym->st_value; |
| 1311 | switch (reg & ~1) |
| 1312 | { |
| 1313 | case 2: reg -= 2; break; |
| 1314 | case 6: reg -= 4; break; |
| 1315 | default: |
| 1316 | (*_bfd_error_handler) |
| 1317 | (_("%s: Only registers %%g[2367] can be declared using STT_REGISTER"), |
| 1318 | bfd_archive_filename (abfd)); |
| 1319 | return false; |
| 1320 | } |
| 1321 | |
| 1322 | if (info->hash->creator != abfd->xvec |
| 1323 | || (abfd->flags & DYNAMIC) != 0) |
| 1324 | { |
| 1325 | /* STT_REGISTER only works when linking an elf64_sparc object. |
| 1326 | If STT_REGISTER comes from a dynamic object, don't put it into |
| 1327 | the output bfd. The dynamic linker will recheck it. */ |
| 1328 | *namep = NULL; |
| 1329 | return true; |
| 1330 | } |
| 1331 | |
| 1332 | p = sparc64_elf_hash_table(info)->app_regs + reg; |
| 1333 | |
| 1334 | if (p->name != NULL && strcmp (p->name, *namep)) |
| 1335 | { |
| 1336 | (*_bfd_error_handler) |
| 1337 | (_("Register %%g%d used incompatibly: %s in %s, previously %s in %s"), |
| 1338 | (int) sym->st_value, |
| 1339 | **namep ? *namep : "#scratch", bfd_archive_filename (abfd), |
| 1340 | *p->name ? p->name : "#scratch", bfd_archive_filename (p->abfd)); |
| 1341 | return false; |
| 1342 | } |
| 1343 | |
| 1344 | if (p->name == NULL) |
| 1345 | { |
| 1346 | if (**namep) |
| 1347 | { |
| 1348 | struct elf_link_hash_entry *h; |
| 1349 | |
| 1350 | h = (struct elf_link_hash_entry *) |
| 1351 | bfd_link_hash_lookup (info->hash, *namep, false, false, false); |
| 1352 | |
| 1353 | if (h != NULL) |
| 1354 | { |
| 1355 | unsigned char type = h->type; |
| 1356 | |
| 1357 | if (type > STT_FUNC) |
| 1358 | type = 0; |
| 1359 | (*_bfd_error_handler) |
| 1360 | (_("Symbol `%s' has differing types: REGISTER in %s, previously %s in %s"), |
| 1361 | *namep, bfd_archive_filename (abfd), |
| 1362 | stt_types[type], bfd_archive_filename (p->abfd)); |
| 1363 | return false; |
| 1364 | } |
| 1365 | |
| 1366 | p->name = bfd_hash_allocate (&info->hash->table, |
| 1367 | strlen (*namep) + 1); |
| 1368 | if (!p->name) |
| 1369 | return false; |
| 1370 | |
| 1371 | strcpy (p->name, *namep); |
| 1372 | } |
| 1373 | else |
| 1374 | p->name = ""; |
| 1375 | p->bind = ELF_ST_BIND (sym->st_info); |
| 1376 | p->abfd = abfd; |
| 1377 | p->shndx = sym->st_shndx; |
| 1378 | } |
| 1379 | else |
| 1380 | { |
| 1381 | if (p->bind == STB_WEAK |
| 1382 | && ELF_ST_BIND (sym->st_info) == STB_GLOBAL) |
| 1383 | { |
| 1384 | p->bind = STB_GLOBAL; |
| 1385 | p->abfd = abfd; |
| 1386 | } |
| 1387 | } |
| 1388 | *namep = NULL; |
| 1389 | return true; |
| 1390 | } |
| 1391 | else if (*namep && **namep |
| 1392 | && info->hash->creator == abfd->xvec) |
| 1393 | { |
| 1394 | int i; |
| 1395 | struct sparc64_elf_app_reg *p; |
| 1396 | |
| 1397 | p = sparc64_elf_hash_table(info)->app_regs; |
| 1398 | for (i = 0; i < 4; i++, p++) |
| 1399 | if (p->name != NULL && ! strcmp (p->name, *namep)) |
| 1400 | { |
| 1401 | unsigned char type = ELF_ST_TYPE (sym->st_info); |
| 1402 | |
| 1403 | if (type > STT_FUNC) |
| 1404 | type = 0; |
| 1405 | (*_bfd_error_handler) |
| 1406 | (_("Symbol `%s' has differing types: %s in %s, previously REGISTER in %s"), |
| 1407 | *namep, stt_types[type], bfd_archive_filename (abfd), |
| 1408 | bfd_archive_filename (p->abfd)); |
| 1409 | return false; |
| 1410 | } |
| 1411 | } |
| 1412 | return true; |
| 1413 | } |
| 1414 | |
| 1415 | /* This function takes care of emiting STT_REGISTER symbols |
| 1416 | which we cannot easily keep in the symbol hash table. */ |
| 1417 | |
| 1418 | static boolean |
| 1419 | sparc64_elf_output_arch_syms (output_bfd, info, finfo, func) |
| 1420 | bfd *output_bfd ATTRIBUTE_UNUSED; |
| 1421 | struct bfd_link_info *info; |
| 1422 | PTR finfo; |
| 1423 | boolean (*func) PARAMS ((PTR, const char *, |
| 1424 | Elf_Internal_Sym *, asection *)); |
| 1425 | { |
| 1426 | int reg; |
| 1427 | struct sparc64_elf_app_reg *app_regs = |
| 1428 | sparc64_elf_hash_table(info)->app_regs; |
| 1429 | Elf_Internal_Sym sym; |
| 1430 | |
| 1431 | /* We arranged in size_dynamic_sections to put the STT_REGISTER entries |
| 1432 | at the end of the dynlocal list, so they came at the end of the local |
| 1433 | symbols in the symtab. Except that they aren't STB_LOCAL, so we need |
| 1434 | to back up symtab->sh_info. */ |
| 1435 | if (elf_hash_table (info)->dynlocal) |
| 1436 | { |
| 1437 | bfd * dynobj = elf_hash_table (info)->dynobj; |
| 1438 | asection *dynsymsec = bfd_get_section_by_name (dynobj, ".dynsym"); |
| 1439 | struct elf_link_local_dynamic_entry *e; |
| 1440 | |
| 1441 | for (e = elf_hash_table (info)->dynlocal; e ; e = e->next) |
| 1442 | if (e->input_indx == -1) |
| 1443 | break; |
| 1444 | if (e) |
| 1445 | { |
| 1446 | elf_section_data (dynsymsec->output_section)->this_hdr.sh_info |
| 1447 | = e->dynindx; |
| 1448 | } |
| 1449 | } |
| 1450 | |
| 1451 | if (info->strip == strip_all) |
| 1452 | return true; |
| 1453 | |
| 1454 | for (reg = 0; reg < 4; reg++) |
| 1455 | if (app_regs [reg].name != NULL) |
| 1456 | { |
| 1457 | if (info->strip == strip_some |
| 1458 | && bfd_hash_lookup (info->keep_hash, |
| 1459 | app_regs [reg].name, |
| 1460 | false, false) == NULL) |
| 1461 | continue; |
| 1462 | |
| 1463 | sym.st_value = reg < 2 ? reg + 2 : reg + 4; |
| 1464 | sym.st_size = 0; |
| 1465 | sym.st_other = 0; |
| 1466 | sym.st_info = ELF_ST_INFO (app_regs [reg].bind, STT_REGISTER); |
| 1467 | sym.st_shndx = app_regs [reg].shndx; |
| 1468 | if (! (*func) (finfo, app_regs [reg].name, &sym, |
| 1469 | sym.st_shndx == SHN_ABS |
| 1470 | ? bfd_abs_section_ptr : bfd_und_section_ptr)) |
| 1471 | return false; |
| 1472 | } |
| 1473 | |
| 1474 | return true; |
| 1475 | } |
| 1476 | |
| 1477 | static int |
| 1478 | sparc64_elf_get_symbol_type (elf_sym, type) |
| 1479 | Elf_Internal_Sym * elf_sym; |
| 1480 | int type; |
| 1481 | { |
| 1482 | if (ELF_ST_TYPE (elf_sym->st_info) == STT_REGISTER) |
| 1483 | return STT_REGISTER; |
| 1484 | else |
| 1485 | return type; |
| 1486 | } |
| 1487 | |
| 1488 | /* A STB_GLOBAL,STT_REGISTER symbol should be BSF_GLOBAL |
| 1489 | even in SHN_UNDEF section. */ |
| 1490 | |
| 1491 | static void |
| 1492 | sparc64_elf_symbol_processing (abfd, asym) |
| 1493 | bfd *abfd ATTRIBUTE_UNUSED; |
| 1494 | asymbol *asym; |
| 1495 | { |
| 1496 | elf_symbol_type *elfsym; |
| 1497 | |
| 1498 | elfsym = (elf_symbol_type *) asym; |
| 1499 | if (elfsym->internal_elf_sym.st_info |
| 1500 | == ELF_ST_INFO (STB_GLOBAL, STT_REGISTER)) |
| 1501 | { |
| 1502 | asym->flags |= BSF_GLOBAL; |
| 1503 | } |
| 1504 | } |
| 1505 | |
| 1506 | /* Adjust a symbol defined by a dynamic object and referenced by a |
| 1507 | regular object. The current definition is in some section of the |
| 1508 | dynamic object, but we're not including those sections. We have to |
| 1509 | change the definition to something the rest of the link can |
| 1510 | understand. */ |
| 1511 | |
| 1512 | static boolean |
| 1513 | sparc64_elf_adjust_dynamic_symbol (info, h) |
| 1514 | struct bfd_link_info *info; |
| 1515 | struct elf_link_hash_entry *h; |
| 1516 | { |
| 1517 | bfd *dynobj; |
| 1518 | asection *s; |
| 1519 | unsigned int power_of_two; |
| 1520 | |
| 1521 | dynobj = elf_hash_table (info)->dynobj; |
| 1522 | |
| 1523 | /* Make sure we know what is going on here. */ |
| 1524 | BFD_ASSERT (dynobj != NULL |
| 1525 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) |
| 1526 | || h->weakdef != NULL |
| 1527 | || ((h->elf_link_hash_flags |
| 1528 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 |
| 1529 | && (h->elf_link_hash_flags |
| 1530 | & ELF_LINK_HASH_REF_REGULAR) != 0 |
| 1531 | && (h->elf_link_hash_flags |
| 1532 | & ELF_LINK_HASH_DEF_REGULAR) == 0))); |
| 1533 | |
| 1534 | /* If this is a function, put it in the procedure linkage table. We |
| 1535 | will fill in the contents of the procedure linkage table later |
| 1536 | (although we could actually do it here). The STT_NOTYPE |
| 1537 | condition is a hack specifically for the Oracle libraries |
| 1538 | delivered for Solaris; for some inexplicable reason, they define |
| 1539 | some of their functions as STT_NOTYPE when they really should be |
| 1540 | STT_FUNC. */ |
| 1541 | if (h->type == STT_FUNC |
| 1542 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0 |
| 1543 | || (h->type == STT_NOTYPE |
| 1544 | && (h->root.type == bfd_link_hash_defined |
| 1545 | || h->root.type == bfd_link_hash_defweak) |
| 1546 | && (h->root.u.def.section->flags & SEC_CODE) != 0)) |
| 1547 | { |
| 1548 | if (! elf_hash_table (info)->dynamic_sections_created) |
| 1549 | { |
| 1550 | /* This case can occur if we saw a WPLT30 reloc in an input |
| 1551 | file, but none of the input files were dynamic objects. |
| 1552 | In such a case, we don't actually need to build a |
| 1553 | procedure linkage table, and we can just do a WDISP30 |
| 1554 | reloc instead. */ |
| 1555 | BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0); |
| 1556 | return true; |
| 1557 | } |
| 1558 | |
| 1559 | s = bfd_get_section_by_name (dynobj, ".plt"); |
| 1560 | BFD_ASSERT (s != NULL); |
| 1561 | |
| 1562 | /* The first four bit in .plt is reserved. */ |
| 1563 | if (s->_raw_size == 0) |
| 1564 | s->_raw_size = PLT_HEADER_SIZE; |
| 1565 | |
| 1566 | /* If this symbol is not defined in a regular file, and we are |
| 1567 | not generating a shared library, then set the symbol to this |
| 1568 | location in the .plt. This is required to make function |
| 1569 | pointers compare as equal between the normal executable and |
| 1570 | the shared library. */ |
| 1571 | if (! info->shared |
| 1572 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) |
| 1573 | { |
| 1574 | h->root.u.def.section = s; |
| 1575 | h->root.u.def.value = s->_raw_size; |
| 1576 | } |
| 1577 | |
| 1578 | /* To simplify matters later, just store the plt index here. */ |
| 1579 | h->plt.offset = s->_raw_size / PLT_ENTRY_SIZE; |
| 1580 | |
| 1581 | /* Make room for this entry. */ |
| 1582 | s->_raw_size += PLT_ENTRY_SIZE; |
| 1583 | |
| 1584 | /* We also need to make an entry in the .rela.plt section. */ |
| 1585 | |
| 1586 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); |
| 1587 | BFD_ASSERT (s != NULL); |
| 1588 | |
| 1589 | s->_raw_size += sizeof (Elf64_External_Rela); |
| 1590 | |
| 1591 | /* The procedure linkage table size is bounded by the magnitude |
| 1592 | of the offset we can describe in the entry. */ |
| 1593 | if (s->_raw_size >= (bfd_vma)1 << 32) |
| 1594 | { |
| 1595 | bfd_set_error (bfd_error_bad_value); |
| 1596 | return false; |
| 1597 | } |
| 1598 | |
| 1599 | return true; |
| 1600 | } |
| 1601 | |
| 1602 | /* If this is a weak symbol, and there is a real definition, the |
| 1603 | processor independent code will have arranged for us to see the |
| 1604 | real definition first, and we can just use the same value. */ |
| 1605 | if (h->weakdef != NULL) |
| 1606 | { |
| 1607 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined |
| 1608 | || h->weakdef->root.type == bfd_link_hash_defweak); |
| 1609 | h->root.u.def.section = h->weakdef->root.u.def.section; |
| 1610 | h->root.u.def.value = h->weakdef->root.u.def.value; |
| 1611 | return true; |
| 1612 | } |
| 1613 | |
| 1614 | /* This is a reference to a symbol defined by a dynamic object which |
| 1615 | is not a function. */ |
| 1616 | |
| 1617 | /* If we are creating a shared library, we must presume that the |
| 1618 | only references to the symbol are via the global offset table. |
| 1619 | For such cases we need not do anything here; the relocations will |
| 1620 | be handled correctly by relocate_section. */ |
| 1621 | if (info->shared) |
| 1622 | return true; |
| 1623 | |
| 1624 | /* We must allocate the symbol in our .dynbss section, which will |
| 1625 | become part of the .bss section of the executable. There will be |
| 1626 | an entry for this symbol in the .dynsym section. The dynamic |
| 1627 | object will contain position independent code, so all references |
| 1628 | from the dynamic object to this symbol will go through the global |
| 1629 | offset table. The dynamic linker will use the .dynsym entry to |
| 1630 | determine the address it must put in the global offset table, so |
| 1631 | both the dynamic object and the regular object will refer to the |
| 1632 | same memory location for the variable. */ |
| 1633 | |
| 1634 | s = bfd_get_section_by_name (dynobj, ".dynbss"); |
| 1635 | BFD_ASSERT (s != NULL); |
| 1636 | |
| 1637 | /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker |
| 1638 | to copy the initial value out of the dynamic object and into the |
| 1639 | runtime process image. We need to remember the offset into the |
| 1640 | .rel.bss section we are going to use. */ |
| 1641 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
| 1642 | { |
| 1643 | asection *srel; |
| 1644 | |
| 1645 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); |
| 1646 | BFD_ASSERT (srel != NULL); |
| 1647 | srel->_raw_size += sizeof (Elf64_External_Rela); |
| 1648 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; |
| 1649 | } |
| 1650 | |
| 1651 | /* We need to figure out the alignment required for this symbol. I |
| 1652 | have no idea how ELF linkers handle this. 16-bytes is the size |
| 1653 | of the largest type that requires hard alignment -- long double. */ |
| 1654 | power_of_two = bfd_log2 (h->size); |
| 1655 | if (power_of_two > 4) |
| 1656 | power_of_two = 4; |
| 1657 | |
| 1658 | /* Apply the required alignment. */ |
| 1659 | s->_raw_size = BFD_ALIGN (s->_raw_size, |
| 1660 | (bfd_size_type) (1 << power_of_two)); |
| 1661 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) |
| 1662 | { |
| 1663 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) |
| 1664 | return false; |
| 1665 | } |
| 1666 | |
| 1667 | /* Define the symbol as being at this point in the section. */ |
| 1668 | h->root.u.def.section = s; |
| 1669 | h->root.u.def.value = s->_raw_size; |
| 1670 | |
| 1671 | /* Increment the section size to make room for the symbol. */ |
| 1672 | s->_raw_size += h->size; |
| 1673 | |
| 1674 | return true; |
| 1675 | } |
| 1676 | |
| 1677 | /* Set the sizes of the dynamic sections. */ |
| 1678 | |
| 1679 | static boolean |
| 1680 | sparc64_elf_size_dynamic_sections (output_bfd, info) |
| 1681 | bfd *output_bfd; |
| 1682 | struct bfd_link_info *info; |
| 1683 | { |
| 1684 | bfd *dynobj; |
| 1685 | asection *s; |
| 1686 | boolean relplt; |
| 1687 | |
| 1688 | dynobj = elf_hash_table (info)->dynobj; |
| 1689 | BFD_ASSERT (dynobj != NULL); |
| 1690 | |
| 1691 | if (elf_hash_table (info)->dynamic_sections_created) |
| 1692 | { |
| 1693 | /* Set the contents of the .interp section to the interpreter. */ |
| 1694 | if (! info->shared) |
| 1695 | { |
| 1696 | s = bfd_get_section_by_name (dynobj, ".interp"); |
| 1697 | BFD_ASSERT (s != NULL); |
| 1698 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; |
| 1699 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
| 1700 | } |
| 1701 | } |
| 1702 | else |
| 1703 | { |
| 1704 | /* We may have created entries in the .rela.got section. |
| 1705 | However, if we are not creating the dynamic sections, we will |
| 1706 | not actually use these entries. Reset the size of .rela.got, |
| 1707 | which will cause it to get stripped from the output file |
| 1708 | below. */ |
| 1709 | s = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 1710 | if (s != NULL) |
| 1711 | s->_raw_size = 0; |
| 1712 | } |
| 1713 | |
| 1714 | /* The check_relocs and adjust_dynamic_symbol entry points have |
| 1715 | determined the sizes of the various dynamic sections. Allocate |
| 1716 | memory for them. */ |
| 1717 | relplt = false; |
| 1718 | for (s = dynobj->sections; s != NULL; s = s->next) |
| 1719 | { |
| 1720 | const char *name; |
| 1721 | boolean strip; |
| 1722 | |
| 1723 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
| 1724 | continue; |
| 1725 | |
| 1726 | /* It's OK to base decisions on the section name, because none |
| 1727 | of the dynobj section names depend upon the input files. */ |
| 1728 | name = bfd_get_section_name (dynobj, s); |
| 1729 | |
| 1730 | strip = false; |
| 1731 | |
| 1732 | if (strncmp (name, ".rela", 5) == 0) |
| 1733 | { |
| 1734 | if (s->_raw_size == 0) |
| 1735 | { |
| 1736 | /* If we don't need this section, strip it from the |
| 1737 | output file. This is to handle .rela.bss and |
| 1738 | .rel.plt. We must create it in |
| 1739 | create_dynamic_sections, because it must be created |
| 1740 | before the linker maps input sections to output |
| 1741 | sections. The linker does that before |
| 1742 | adjust_dynamic_symbol is called, and it is that |
| 1743 | function which decides whether anything needs to go |
| 1744 | into these sections. */ |
| 1745 | strip = true; |
| 1746 | } |
| 1747 | else |
| 1748 | { |
| 1749 | if (strcmp (name, ".rela.plt") == 0) |
| 1750 | relplt = true; |
| 1751 | |
| 1752 | /* We use the reloc_count field as a counter if we need |
| 1753 | to copy relocs into the output file. */ |
| 1754 | s->reloc_count = 0; |
| 1755 | } |
| 1756 | } |
| 1757 | else if (strcmp (name, ".plt") != 0 |
| 1758 | && strncmp (name, ".got", 4) != 0) |
| 1759 | { |
| 1760 | /* It's not one of our sections, so don't allocate space. */ |
| 1761 | continue; |
| 1762 | } |
| 1763 | |
| 1764 | if (strip) |
| 1765 | { |
| 1766 | _bfd_strip_section_from_output (info, s); |
| 1767 | continue; |
| 1768 | } |
| 1769 | |
| 1770 | /* Allocate memory for the section contents. Zero the memory |
| 1771 | for the benefit of .rela.plt, which has 4 unused entries |
| 1772 | at the beginning, and we don't want garbage. */ |
| 1773 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); |
| 1774 | if (s->contents == NULL && s->_raw_size != 0) |
| 1775 | return false; |
| 1776 | } |
| 1777 | |
| 1778 | if (elf_hash_table (info)->dynamic_sections_created) |
| 1779 | { |
| 1780 | /* Add some entries to the .dynamic section. We fill in the |
| 1781 | values later, in sparc64_elf_finish_dynamic_sections, but we |
| 1782 | must add the entries now so that we get the correct size for |
| 1783 | the .dynamic section. The DT_DEBUG entry is filled in by the |
| 1784 | dynamic linker and used by the debugger. */ |
| 1785 | #define add_dynamic_entry(TAG, VAL) \ |
| 1786 | bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL)) |
| 1787 | |
| 1788 | int reg; |
| 1789 | struct sparc64_elf_app_reg * app_regs; |
| 1790 | struct elf_strtab_hash *dynstr; |
| 1791 | struct elf_link_hash_table *eht = elf_hash_table (info); |
| 1792 | |
| 1793 | if (!info->shared) |
| 1794 | { |
| 1795 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
| 1796 | return false; |
| 1797 | } |
| 1798 | |
| 1799 | if (relplt) |
| 1800 | { |
| 1801 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
| 1802 | || !add_dynamic_entry (DT_PLTRELSZ, 0) |
| 1803 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) |
| 1804 | || !add_dynamic_entry (DT_JMPREL, 0)) |
| 1805 | return false; |
| 1806 | } |
| 1807 | |
| 1808 | if (!add_dynamic_entry (DT_RELA, 0) |
| 1809 | || !add_dynamic_entry (DT_RELASZ, 0) |
| 1810 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) |
| 1811 | return false; |
| 1812 | |
| 1813 | if (info->flags & DF_TEXTREL) |
| 1814 | { |
| 1815 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
| 1816 | return false; |
| 1817 | } |
| 1818 | |
| 1819 | /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER |
| 1820 | entries if needed. */ |
| 1821 | app_regs = sparc64_elf_hash_table (info)->app_regs; |
| 1822 | dynstr = eht->dynstr; |
| 1823 | |
| 1824 | for (reg = 0; reg < 4; reg++) |
| 1825 | if (app_regs [reg].name != NULL) |
| 1826 | { |
| 1827 | struct elf_link_local_dynamic_entry *entry, *e; |
| 1828 | |
| 1829 | if (!add_dynamic_entry (DT_SPARC_REGISTER, 0)) |
| 1830 | return false; |
| 1831 | |
| 1832 | entry = (struct elf_link_local_dynamic_entry *) |
| 1833 | bfd_hash_allocate (&info->hash->table, sizeof (*entry)); |
| 1834 | if (entry == NULL) |
| 1835 | return false; |
| 1836 | |
| 1837 | /* We cheat here a little bit: the symbol will not be local, so we |
| 1838 | put it at the end of the dynlocal linked list. We will fix it |
| 1839 | later on, as we have to fix other fields anyway. */ |
| 1840 | entry->isym.st_value = reg < 2 ? reg + 2 : reg + 4; |
| 1841 | entry->isym.st_size = 0; |
| 1842 | if (*app_regs [reg].name != '\0') |
| 1843 | entry->isym.st_name |
| 1844 | = _bfd_elf_strtab_add (dynstr, app_regs[reg].name, false); |
| 1845 | else |
| 1846 | entry->isym.st_name = 0; |
| 1847 | entry->isym.st_other = 0; |
| 1848 | entry->isym.st_info = ELF_ST_INFO (app_regs [reg].bind, |
| 1849 | STT_REGISTER); |
| 1850 | entry->isym.st_shndx = app_regs [reg].shndx; |
| 1851 | entry->next = NULL; |
| 1852 | entry->input_bfd = output_bfd; |
| 1853 | entry->input_indx = -1; |
| 1854 | |
| 1855 | if (eht->dynlocal == NULL) |
| 1856 | eht->dynlocal = entry; |
| 1857 | else |
| 1858 | { |
| 1859 | for (e = eht->dynlocal; e->next; e = e->next) |
| 1860 | ; |
| 1861 | e->next = entry; |
| 1862 | } |
| 1863 | eht->dynsymcount++; |
| 1864 | } |
| 1865 | } |
| 1866 | #undef add_dynamic_entry |
| 1867 | |
| 1868 | return true; |
| 1869 | } |
| 1870 | \f |
| 1871 | #define SET_SEC_DO_RELAX(section) do { elf_section_data(section)->tdata = (void *)1; } while (0) |
| 1872 | #define SEC_DO_RELAX(section) (elf_section_data(section)->tdata == (void *)1) |
| 1873 | |
| 1874 | static boolean |
| 1875 | sparc64_elf_relax_section (abfd, section, link_info, again) |
| 1876 | bfd *abfd ATTRIBUTE_UNUSED; |
| 1877 | asection *section ATTRIBUTE_UNUSED; |
| 1878 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED; |
| 1879 | boolean *again; |
| 1880 | { |
| 1881 | *again = false; |
| 1882 | SET_SEC_DO_RELAX (section); |
| 1883 | return true; |
| 1884 | } |
| 1885 | \f |
| 1886 | /* This is the condition under which finish_dynamic_symbol will be called |
| 1887 | from elflink.h. If elflink.h doesn't call our finish_dynamic_symbol |
| 1888 | routine, we'll need to do something about initializing any .plt and |
| 1889 | .got entries in relocate_section. */ |
| 1890 | #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \ |
| 1891 | ((DYN) \ |
| 1892 | && ((INFO)->shared \ |
| 1893 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \ |
| 1894 | && ((H)->dynindx != -1 \ |
| 1895 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)) |
| 1896 | |
| 1897 | /* Relocate a SPARC64 ELF section. */ |
| 1898 | |
| 1899 | static boolean |
| 1900 | sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, |
| 1901 | contents, relocs, local_syms, local_sections) |
| 1902 | bfd *output_bfd; |
| 1903 | struct bfd_link_info *info; |
| 1904 | bfd *input_bfd; |
| 1905 | asection *input_section; |
| 1906 | bfd_byte *contents; |
| 1907 | Elf_Internal_Rela *relocs; |
| 1908 | Elf_Internal_Sym *local_syms; |
| 1909 | asection **local_sections; |
| 1910 | { |
| 1911 | bfd *dynobj; |
| 1912 | Elf_Internal_Shdr *symtab_hdr; |
| 1913 | struct elf_link_hash_entry **sym_hashes; |
| 1914 | bfd_vma *local_got_offsets; |
| 1915 | bfd_vma got_base; |
| 1916 | asection *sgot; |
| 1917 | asection *splt; |
| 1918 | asection *sreloc; |
| 1919 | Elf_Internal_Rela *rel; |
| 1920 | Elf_Internal_Rela *relend; |
| 1921 | |
| 1922 | if (info->relocateable) |
| 1923 | return true; |
| 1924 | |
| 1925 | dynobj = elf_hash_table (info)->dynobj; |
| 1926 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| 1927 | sym_hashes = elf_sym_hashes (input_bfd); |
| 1928 | local_got_offsets = elf_local_got_offsets (input_bfd); |
| 1929 | |
| 1930 | if (elf_hash_table(info)->hgot == NULL) |
| 1931 | got_base = 0; |
| 1932 | else |
| 1933 | got_base = elf_hash_table (info)->hgot->root.u.def.value; |
| 1934 | |
| 1935 | sgot = splt = sreloc = NULL; |
| 1936 | |
| 1937 | rel = relocs; |
| 1938 | relend = relocs + NUM_SHDR_ENTRIES (& elf_section_data (input_section)->rel_hdr); |
| 1939 | for (; rel < relend; rel++) |
| 1940 | { |
| 1941 | int r_type; |
| 1942 | reloc_howto_type *howto; |
| 1943 | unsigned long r_symndx; |
| 1944 | struct elf_link_hash_entry *h; |
| 1945 | Elf_Internal_Sym *sym; |
| 1946 | asection *sec; |
| 1947 | bfd_vma relocation, off; |
| 1948 | bfd_reloc_status_type r; |
| 1949 | boolean is_plt = false; |
| 1950 | boolean unresolved_reloc; |
| 1951 | |
| 1952 | r_type = ELF64_R_TYPE_ID (rel->r_info); |
| 1953 | if (r_type < 0 || r_type >= (int) R_SPARC_max_std) |
| 1954 | { |
| 1955 | bfd_set_error (bfd_error_bad_value); |
| 1956 | return false; |
| 1957 | } |
| 1958 | howto = sparc64_elf_howto_table + r_type; |
| 1959 | |
| 1960 | /* This is a final link. */ |
| 1961 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 1962 | h = NULL; |
| 1963 | sym = NULL; |
| 1964 | sec = NULL; |
| 1965 | unresolved_reloc = false; |
| 1966 | if (r_symndx < symtab_hdr->sh_info) |
| 1967 | { |
| 1968 | sym = local_syms + r_symndx; |
| 1969 | sec = local_sections[r_symndx]; |
| 1970 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel); |
| 1971 | } |
| 1972 | else |
| 1973 | { |
| 1974 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 1975 | while (h->root.type == bfd_link_hash_indirect |
| 1976 | || h->root.type == bfd_link_hash_warning) |
| 1977 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 1978 | |
| 1979 | relocation = 0; |
| 1980 | if (h->root.type == bfd_link_hash_defined |
| 1981 | || h->root.type == bfd_link_hash_defweak) |
| 1982 | { |
| 1983 | sec = h->root.u.def.section; |
| 1984 | if (sec->output_section == NULL) |
| 1985 | /* Set a flag that will be cleared later if we find a |
| 1986 | relocation value for this symbol. output_section |
| 1987 | is typically NULL for symbols satisfied by a shared |
| 1988 | library. */ |
| 1989 | unresolved_reloc = true; |
| 1990 | else |
| 1991 | relocation = (h->root.u.def.value |
| 1992 | + sec->output_section->vma |
| 1993 | + sec->output_offset); |
| 1994 | } |
| 1995 | else if (h->root.type == bfd_link_hash_undefweak) |
| 1996 | ; |
| 1997 | else if (info->shared |
| 1998 | && (!info->symbolic || info->allow_shlib_undefined) |
| 1999 | && !info->no_undefined |
| 2000 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) |
| 2001 | ; |
| 2002 | else |
| 2003 | { |
| 2004 | if (! ((*info->callbacks->undefined_symbol) |
| 2005 | (info, h->root.root.string, input_bfd, |
| 2006 | input_section, rel->r_offset, |
| 2007 | (!info->shared || info->no_undefined |
| 2008 | || ELF_ST_VISIBILITY (h->other))))) |
| 2009 | return false; |
| 2010 | |
| 2011 | /* To avoid generating warning messages about truncated |
| 2012 | relocations, set the relocation's address to be the same as |
| 2013 | the start of this section. */ |
| 2014 | |
| 2015 | if (input_section->output_section != NULL) |
| 2016 | relocation = input_section->output_section->vma; |
| 2017 | else |
| 2018 | relocation = 0; |
| 2019 | } |
| 2020 | } |
| 2021 | |
| 2022 | do_dynreloc: |
| 2023 | /* When generating a shared object, these relocations are copied |
| 2024 | into the output file to be resolved at run time. */ |
| 2025 | if (info->shared && r_symndx != 0 && (input_section->flags & SEC_ALLOC)) |
| 2026 | { |
| 2027 | switch (r_type) |
| 2028 | { |
| 2029 | case R_SPARC_PC10: |
| 2030 | case R_SPARC_PC22: |
| 2031 | case R_SPARC_PC_HH22: |
| 2032 | case R_SPARC_PC_HM10: |
| 2033 | case R_SPARC_PC_LM22: |
| 2034 | if (h != NULL |
| 2035 | && !strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_")) |
| 2036 | break; |
| 2037 | /* Fall through. */ |
| 2038 | case R_SPARC_DISP8: |
| 2039 | case R_SPARC_DISP16: |
| 2040 | case R_SPARC_DISP32: |
| 2041 | case R_SPARC_DISP64: |
| 2042 | case R_SPARC_WDISP30: |
| 2043 | case R_SPARC_WDISP22: |
| 2044 | case R_SPARC_WDISP19: |
| 2045 | case R_SPARC_WDISP16: |
| 2046 | if (h == NULL) |
| 2047 | break; |
| 2048 | /* Fall through. */ |
| 2049 | case R_SPARC_8: |
| 2050 | case R_SPARC_16: |
| 2051 | case R_SPARC_32: |
| 2052 | case R_SPARC_HI22: |
| 2053 | case R_SPARC_22: |
| 2054 | case R_SPARC_13: |
| 2055 | case R_SPARC_LO10: |
| 2056 | case R_SPARC_UA32: |
| 2057 | case R_SPARC_10: |
| 2058 | case R_SPARC_11: |
| 2059 | case R_SPARC_64: |
| 2060 | case R_SPARC_OLO10: |
| 2061 | case R_SPARC_HH22: |
| 2062 | case R_SPARC_HM10: |
| 2063 | case R_SPARC_LM22: |
| 2064 | case R_SPARC_7: |
| 2065 | case R_SPARC_5: |
| 2066 | case R_SPARC_6: |
| 2067 | case R_SPARC_HIX22: |
| 2068 | case R_SPARC_LOX10: |
| 2069 | case R_SPARC_H44: |
| 2070 | case R_SPARC_M44: |
| 2071 | case R_SPARC_L44: |
| 2072 | case R_SPARC_UA64: |
| 2073 | case R_SPARC_UA16: |
| 2074 | { |
| 2075 | Elf_Internal_Rela outrel; |
| 2076 | boolean skip, relocate; |
| 2077 | |
| 2078 | if (sreloc == NULL) |
| 2079 | { |
| 2080 | const char *name = |
| 2081 | (bfd_elf_string_from_elf_section |
| 2082 | (input_bfd, |
| 2083 | elf_elfheader (input_bfd)->e_shstrndx, |
| 2084 | elf_section_data (input_section)->rel_hdr.sh_name)); |
| 2085 | |
| 2086 | if (name == NULL) |
| 2087 | return false; |
| 2088 | |
| 2089 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 |
| 2090 | && strcmp (bfd_get_section_name(input_bfd, |
| 2091 | input_section), |
| 2092 | name + 5) == 0); |
| 2093 | |
| 2094 | sreloc = bfd_get_section_by_name (dynobj, name); |
| 2095 | BFD_ASSERT (sreloc != NULL); |
| 2096 | } |
| 2097 | |
| 2098 | skip = false; |
| 2099 | relocate = false; |
| 2100 | |
| 2101 | outrel.r_offset = |
| 2102 | _bfd_elf_section_offset (output_bfd, info, input_section, |
| 2103 | rel->r_offset); |
| 2104 | if (outrel.r_offset == (bfd_vma) -1) |
| 2105 | skip = true; |
| 2106 | else if (outrel.r_offset == (bfd_vma) -2) |
| 2107 | skip = true, relocate = true; |
| 2108 | |
| 2109 | outrel.r_offset += (input_section->output_section->vma |
| 2110 | + input_section->output_offset); |
| 2111 | |
| 2112 | /* Optimize unaligned reloc usage now that we know where |
| 2113 | it finally resides. */ |
| 2114 | switch (r_type) |
| 2115 | { |
| 2116 | case R_SPARC_16: |
| 2117 | if (outrel.r_offset & 1) r_type = R_SPARC_UA16; |
| 2118 | break; |
| 2119 | case R_SPARC_UA16: |
| 2120 | if (!(outrel.r_offset & 1)) r_type = R_SPARC_16; |
| 2121 | break; |
| 2122 | case R_SPARC_32: |
| 2123 | if (outrel.r_offset & 3) r_type = R_SPARC_UA32; |
| 2124 | break; |
| 2125 | case R_SPARC_UA32: |
| 2126 | if (!(outrel.r_offset & 3)) r_type = R_SPARC_32; |
| 2127 | break; |
| 2128 | case R_SPARC_64: |
| 2129 | if (outrel.r_offset & 7) r_type = R_SPARC_UA64; |
| 2130 | break; |
| 2131 | case R_SPARC_UA64: |
| 2132 | if (!(outrel.r_offset & 7)) r_type = R_SPARC_64; |
| 2133 | break; |
| 2134 | case R_SPARC_DISP8: |
| 2135 | case R_SPARC_DISP16: |
| 2136 | case R_SPARC_DISP32: |
| 2137 | case R_SPARC_DISP64: |
| 2138 | /* If the symbol is not dynamic, we should not keep |
| 2139 | a dynamic relocation. But an .rela.* slot has been |
| 2140 | allocated for it, output R_SPARC_NONE. |
| 2141 | FIXME: Add code tracking needed dynamic relocs as |
| 2142 | e.g. i386 has. */ |
| 2143 | if (h->dynindx == -1) |
| 2144 | skip = true, relocate = true; |
| 2145 | break; |
| 2146 | } |
| 2147 | |
| 2148 | if (skip) |
| 2149 | memset (&outrel, 0, sizeof outrel); |
| 2150 | /* h->dynindx may be -1 if the symbol was marked to |
| 2151 | become local. */ |
| 2152 | else if (h != NULL && ! is_plt |
| 2153 | && ((! info->symbolic && h->dynindx != -1) |
| 2154 | || (h->elf_link_hash_flags |
| 2155 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) |
| 2156 | { |
| 2157 | BFD_ASSERT (h->dynindx != -1); |
| 2158 | outrel.r_info |
| 2159 | = ELF64_R_INFO (h->dynindx, |
| 2160 | ELF64_R_TYPE_INFO ( |
| 2161 | ELF64_R_TYPE_DATA (rel->r_info), |
| 2162 | r_type)); |
| 2163 | outrel.r_addend = rel->r_addend; |
| 2164 | } |
| 2165 | else |
| 2166 | { |
| 2167 | if (r_type == R_SPARC_64) |
| 2168 | { |
| 2169 | outrel.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE); |
| 2170 | outrel.r_addend = relocation + rel->r_addend; |
| 2171 | } |
| 2172 | else |
| 2173 | { |
| 2174 | long indx; |
| 2175 | |
| 2176 | if (is_plt) |
| 2177 | sec = splt; |
| 2178 | else if (h == NULL) |
| 2179 | sec = local_sections[r_symndx]; |
| 2180 | else |
| 2181 | { |
| 2182 | BFD_ASSERT (h->root.type == bfd_link_hash_defined |
| 2183 | || (h->root.type |
| 2184 | == bfd_link_hash_defweak)); |
| 2185 | sec = h->root.u.def.section; |
| 2186 | } |
| 2187 | if (sec != NULL && bfd_is_abs_section (sec)) |
| 2188 | indx = 0; |
| 2189 | else if (sec == NULL || sec->owner == NULL) |
| 2190 | { |
| 2191 | bfd_set_error (bfd_error_bad_value); |
| 2192 | return false; |
| 2193 | } |
| 2194 | else |
| 2195 | { |
| 2196 | asection *osec; |
| 2197 | |
| 2198 | osec = sec->output_section; |
| 2199 | indx = elf_section_data (osec)->dynindx; |
| 2200 | |
| 2201 | /* FIXME: we really should be able to link non-pic |
| 2202 | shared libraries. */ |
| 2203 | if (indx == 0) |
| 2204 | { |
| 2205 | BFD_FAIL (); |
| 2206 | (*_bfd_error_handler) |
| 2207 | (_("%s: probably compiled without -fPIC?"), |
| 2208 | bfd_archive_filename (input_bfd)); |
| 2209 | bfd_set_error (bfd_error_bad_value); |
| 2210 | return false; |
| 2211 | } |
| 2212 | } |
| 2213 | |
| 2214 | outrel.r_info |
| 2215 | = ELF64_R_INFO (indx, |
| 2216 | ELF64_R_TYPE_INFO ( |
| 2217 | ELF64_R_TYPE_DATA (rel->r_info), |
| 2218 | r_type)); |
| 2219 | outrel.r_addend = relocation + rel->r_addend; |
| 2220 | } |
| 2221 | } |
| 2222 | |
| 2223 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, |
| 2224 | (((Elf64_External_Rela *) |
| 2225 | sreloc->contents) |
| 2226 | + sreloc->reloc_count)); |
| 2227 | ++sreloc->reloc_count; |
| 2228 | |
| 2229 | /* This reloc will be computed at runtime, so there's no |
| 2230 | need to do anything now. */ |
| 2231 | if (! relocate) |
| 2232 | continue; |
| 2233 | } |
| 2234 | break; |
| 2235 | } |
| 2236 | } |
| 2237 | |
| 2238 | switch (r_type) |
| 2239 | { |
| 2240 | case R_SPARC_GOT10: |
| 2241 | case R_SPARC_GOT13: |
| 2242 | case R_SPARC_GOT22: |
| 2243 | /* Relocation is to the entry for this symbol in the global |
| 2244 | offset table. */ |
| 2245 | if (sgot == NULL) |
| 2246 | { |
| 2247 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 2248 | BFD_ASSERT (sgot != NULL); |
| 2249 | } |
| 2250 | |
| 2251 | if (h != NULL) |
| 2252 | { |
| 2253 | boolean dyn; |
| 2254 | |
| 2255 | off = h->got.offset; |
| 2256 | BFD_ASSERT (off != (bfd_vma) -1); |
| 2257 | dyn = elf_hash_table (info)->dynamic_sections_created; |
| 2258 | |
| 2259 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h) |
| 2260 | || (info->shared |
| 2261 | && (info->symbolic |
| 2262 | || h->dynindx == -1 |
| 2263 | || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)) |
| 2264 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) |
| 2265 | { |
| 2266 | /* This is actually a static link, or it is a -Bsymbolic |
| 2267 | link and the symbol is defined locally, or the symbol |
| 2268 | was forced to be local because of a version file. We |
| 2269 | must initialize this entry in the global offset table. |
| 2270 | Since the offset must always be a multiple of 8, we |
| 2271 | use the least significant bit to record whether we |
| 2272 | have initialized it already. |
| 2273 | |
| 2274 | When doing a dynamic link, we create a .rela.got |
| 2275 | relocation entry to initialize the value. This is |
| 2276 | done in the finish_dynamic_symbol routine. */ |
| 2277 | |
| 2278 | if ((off & 1) != 0) |
| 2279 | off &= ~1; |
| 2280 | else |
| 2281 | { |
| 2282 | bfd_put_64 (output_bfd, relocation, |
| 2283 | sgot->contents + off); |
| 2284 | h->got.offset |= 1; |
| 2285 | } |
| 2286 | } |
| 2287 | else |
| 2288 | unresolved_reloc = false; |
| 2289 | } |
| 2290 | else |
| 2291 | { |
| 2292 | BFD_ASSERT (local_got_offsets != NULL); |
| 2293 | off = local_got_offsets[r_symndx]; |
| 2294 | BFD_ASSERT (off != (bfd_vma) -1); |
| 2295 | |
| 2296 | /* The offset must always be a multiple of 8. We use |
| 2297 | the least significant bit to record whether we have |
| 2298 | already processed this entry. */ |
| 2299 | if ((off & 1) != 0) |
| 2300 | off &= ~1; |
| 2301 | else |
| 2302 | { |
| 2303 | local_got_offsets[r_symndx] |= 1; |
| 2304 | |
| 2305 | if (info->shared) |
| 2306 | { |
| 2307 | asection *srelgot; |
| 2308 | Elf_Internal_Rela outrel; |
| 2309 | |
| 2310 | /* The Solaris 2.7 64-bit linker adds the contents |
| 2311 | of the location to the value of the reloc. |
| 2312 | Note this is different behaviour to the |
| 2313 | 32-bit linker, which both adds the contents |
| 2314 | and ignores the addend. So clear the location. */ |
| 2315 | bfd_put_64 (output_bfd, (bfd_vma) 0, |
| 2316 | sgot->contents + off); |
| 2317 | |
| 2318 | /* We need to generate a R_SPARC_RELATIVE reloc |
| 2319 | for the dynamic linker. */ |
| 2320 | srelgot = bfd_get_section_by_name(dynobj, ".rela.got"); |
| 2321 | BFD_ASSERT (srelgot != NULL); |
| 2322 | |
| 2323 | outrel.r_offset = (sgot->output_section->vma |
| 2324 | + sgot->output_offset |
| 2325 | + off); |
| 2326 | outrel.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE); |
| 2327 | outrel.r_addend = relocation; |
| 2328 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, |
| 2329 | (((Elf64_External_Rela *) |
| 2330 | srelgot->contents) |
| 2331 | + srelgot->reloc_count)); |
| 2332 | ++srelgot->reloc_count; |
| 2333 | } |
| 2334 | else |
| 2335 | bfd_put_64 (output_bfd, relocation, sgot->contents + off); |
| 2336 | } |
| 2337 | } |
| 2338 | relocation = sgot->output_offset + off - got_base; |
| 2339 | goto do_default; |
| 2340 | |
| 2341 | case R_SPARC_WPLT30: |
| 2342 | case R_SPARC_PLT32: |
| 2343 | case R_SPARC_HIPLT22: |
| 2344 | case R_SPARC_LOPLT10: |
| 2345 | case R_SPARC_PCPLT32: |
| 2346 | case R_SPARC_PCPLT22: |
| 2347 | case R_SPARC_PCPLT10: |
| 2348 | case R_SPARC_PLT64: |
| 2349 | /* Relocation is to the entry for this symbol in the |
| 2350 | procedure linkage table. */ |
| 2351 | BFD_ASSERT (h != NULL); |
| 2352 | |
| 2353 | if (h->plt.offset == (bfd_vma) -1) |
| 2354 | { |
| 2355 | /* We didn't make a PLT entry for this symbol. This |
| 2356 | happens when statically linking PIC code, or when |
| 2357 | using -Bsymbolic. */ |
| 2358 | goto do_default; |
| 2359 | } |
| 2360 | |
| 2361 | if (splt == NULL) |
| 2362 | { |
| 2363 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 2364 | BFD_ASSERT (splt != NULL); |
| 2365 | } |
| 2366 | |
| 2367 | relocation = (splt->output_section->vma |
| 2368 | + splt->output_offset |
| 2369 | + sparc64_elf_plt_entry_offset (h->plt.offset)); |
| 2370 | unresolved_reloc = false; |
| 2371 | if (r_type == R_SPARC_WPLT30) |
| 2372 | goto do_wplt30; |
| 2373 | if (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64) |
| 2374 | { |
| 2375 | r_type = r_type == R_SPARC_PLT32 ? R_SPARC_32 : R_SPARC_64; |
| 2376 | is_plt = true; |
| 2377 | goto do_dynreloc; |
| 2378 | } |
| 2379 | goto do_default; |
| 2380 | |
| 2381 | case R_SPARC_OLO10: |
| 2382 | { |
| 2383 | bfd_vma x; |
| 2384 | |
| 2385 | relocation += rel->r_addend; |
| 2386 | relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info); |
| 2387 | |
| 2388 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 2389 | x = (x & ~(bfd_vma) 0x1fff) | (relocation & 0x1fff); |
| 2390 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); |
| 2391 | |
| 2392 | r = bfd_check_overflow (howto->complain_on_overflow, |
| 2393 | howto->bitsize, howto->rightshift, |
| 2394 | bfd_arch_bits_per_address (input_bfd), |
| 2395 | relocation); |
| 2396 | } |
| 2397 | break; |
| 2398 | |
| 2399 | case R_SPARC_WDISP16: |
| 2400 | { |
| 2401 | bfd_vma x; |
| 2402 | |
| 2403 | relocation += rel->r_addend; |
| 2404 | /* Adjust for pc-relative-ness. */ |
| 2405 | relocation -= (input_section->output_section->vma |
| 2406 | + input_section->output_offset); |
| 2407 | relocation -= rel->r_offset; |
| 2408 | |
| 2409 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 2410 | x &= ~(bfd_vma) 0x303fff; |
| 2411 | x |= ((((relocation >> 2) & 0xc000) << 6) |
| 2412 | | ((relocation >> 2) & 0x3fff)); |
| 2413 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); |
| 2414 | |
| 2415 | r = bfd_check_overflow (howto->complain_on_overflow, |
| 2416 | howto->bitsize, howto->rightshift, |
| 2417 | bfd_arch_bits_per_address (input_bfd), |
| 2418 | relocation); |
| 2419 | } |
| 2420 | break; |
| 2421 | |
| 2422 | case R_SPARC_HIX22: |
| 2423 | { |
| 2424 | bfd_vma x; |
| 2425 | |
| 2426 | relocation += rel->r_addend; |
| 2427 | relocation = relocation ^ MINUS_ONE; |
| 2428 | |
| 2429 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 2430 | x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff); |
| 2431 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); |
| 2432 | |
| 2433 | r = bfd_check_overflow (howto->complain_on_overflow, |
| 2434 | howto->bitsize, howto->rightshift, |
| 2435 | bfd_arch_bits_per_address (input_bfd), |
| 2436 | relocation); |
| 2437 | } |
| 2438 | break; |
| 2439 | |
| 2440 | case R_SPARC_LOX10: |
| 2441 | { |
| 2442 | bfd_vma x; |
| 2443 | |
| 2444 | relocation += rel->r_addend; |
| 2445 | relocation = (relocation & 0x3ff) | 0x1c00; |
| 2446 | |
| 2447 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 2448 | x = (x & ~(bfd_vma) 0x1fff) | relocation; |
| 2449 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); |
| 2450 | |
| 2451 | r = bfd_reloc_ok; |
| 2452 | } |
| 2453 | break; |
| 2454 | |
| 2455 | case R_SPARC_WDISP30: |
| 2456 | do_wplt30: |
| 2457 | if (SEC_DO_RELAX (input_section) |
| 2458 | && rel->r_offset + 4 < input_section->_raw_size) |
| 2459 | { |
| 2460 | #define G0 0 |
| 2461 | #define O7 15 |
| 2462 | #define XCC (2 << 20) |
| 2463 | #define COND(x) (((x)&0xf)<<25) |
| 2464 | #define CONDA COND(0x8) |
| 2465 | #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC) |
| 2466 | #define INSN_BA (F2(0,2) | CONDA) |
| 2467 | #define INSN_OR F3(2, 0x2, 0) |
| 2468 | #define INSN_NOP F2(0,4) |
| 2469 | |
| 2470 | bfd_vma x, y; |
| 2471 | |
| 2472 | /* If the instruction is a call with either: |
| 2473 | restore |
| 2474 | arithmetic instruction with rd == %o7 |
| 2475 | where rs1 != %o7 and rs2 if it is register != %o7 |
| 2476 | then we can optimize if the call destination is near |
| 2477 | by changing the call into a branch always. */ |
| 2478 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 2479 | y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); |
| 2480 | if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2)) |
| 2481 | { |
| 2482 | if (((y & OP3(~0)) == OP3(0x3d) /* restore */ |
| 2483 | || ((y & OP3(0x28)) == 0 /* arithmetic */ |
| 2484 | && (y & RD(~0)) == RD(O7))) |
| 2485 | && (y & RS1(~0)) != RS1(O7) |
| 2486 | && ((y & F3I(~0)) |
| 2487 | || (y & RS2(~0)) != RS2(O7))) |
| 2488 | { |
| 2489 | bfd_vma reloc; |
| 2490 | |
| 2491 | reloc = relocation + rel->r_addend - rel->r_offset; |
| 2492 | reloc -= (input_section->output_section->vma |
| 2493 | + input_section->output_offset); |
| 2494 | if (reloc & 3) |
| 2495 | goto do_default; |
| 2496 | |
| 2497 | /* Ensure the branch fits into simm22. */ |
| 2498 | if ((reloc & ~(bfd_vma)0x7fffff) |
| 2499 | && ((reloc | 0x7fffff) != MINUS_ONE)) |
| 2500 | goto do_default; |
| 2501 | reloc >>= 2; |
| 2502 | |
| 2503 | /* Check whether it fits into simm19. */ |
| 2504 | if ((reloc & 0x3c0000) == 0 |
| 2505 | || (reloc & 0x3c0000) == 0x3c0000) |
| 2506 | x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */ |
| 2507 | else |
| 2508 | x = INSN_BA | (reloc & 0x3fffff); /* ba */ |
| 2509 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); |
| 2510 | r = bfd_reloc_ok; |
| 2511 | if (rel->r_offset >= 4 |
| 2512 | && (y & (0xffffffff ^ RS1(~0))) |
| 2513 | == (INSN_OR | RD(O7) | RS2(G0))) |
| 2514 | { |
| 2515 | bfd_vma z; |
| 2516 | unsigned int reg; |
| 2517 | |
| 2518 | z = bfd_get_32 (input_bfd, |
| 2519 | contents + rel->r_offset - 4); |
| 2520 | if ((z & (0xffffffff ^ RD(~0))) |
| 2521 | != (INSN_OR | RS1(O7) | RS2(G0))) |
| 2522 | break; |
| 2523 | |
| 2524 | /* The sequence was |
| 2525 | or %o7, %g0, %rN |
| 2526 | call foo |
| 2527 | or %rN, %g0, %o7 |
| 2528 | |
| 2529 | If call foo was replaced with ba, replace |
| 2530 | or %rN, %g0, %o7 with nop. */ |
| 2531 | |
| 2532 | reg = (y & RS1(~0)) >> 14; |
| 2533 | if (reg != ((z & RD(~0)) >> 25) |
| 2534 | || reg == G0 || reg == O7) |
| 2535 | break; |
| 2536 | |
| 2537 | bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP, |
| 2538 | contents + rel->r_offset + 4); |
| 2539 | } |
| 2540 | break; |
| 2541 | } |
| 2542 | } |
| 2543 | } |
| 2544 | /* FALLTHROUGH */ |
| 2545 | |
| 2546 | default: |
| 2547 | do_default: |
| 2548 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 2549 | contents, rel->r_offset, |
| 2550 | relocation, rel->r_addend); |
| 2551 | break; |
| 2552 | } |
| 2553 | |
| 2554 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
| 2555 | because such sections are not SEC_ALLOC and thus ld.so will |
| 2556 | not process them. */ |
| 2557 | if (unresolved_reloc |
| 2558 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
| 2559 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0)) |
| 2560 | (*_bfd_error_handler) |
| 2561 | (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"), |
| 2562 | bfd_archive_filename (input_bfd), |
| 2563 | bfd_get_section_name (input_bfd, input_section), |
| 2564 | (long) rel->r_offset, |
| 2565 | h->root.root.string); |
| 2566 | |
| 2567 | switch (r) |
| 2568 | { |
| 2569 | case bfd_reloc_ok: |
| 2570 | break; |
| 2571 | |
| 2572 | default: |
| 2573 | case bfd_reloc_outofrange: |
| 2574 | abort (); |
| 2575 | |
| 2576 | case bfd_reloc_overflow: |
| 2577 | { |
| 2578 | const char *name; |
| 2579 | |
| 2580 | /* The Solaris native linker silently disregards |
| 2581 | overflows. We don't, but this breaks stabs debugging |
| 2582 | info, whose relocations are only 32-bits wide. Ignore |
| 2583 | overflows in this case. */ |
| 2584 | if (r_type == R_SPARC_32 |
| 2585 | && (input_section->flags & SEC_DEBUGGING) != 0 |
| 2586 | && strcmp (bfd_section_name (input_bfd, input_section), |
| 2587 | ".stab") == 0) |
| 2588 | break; |
| 2589 | |
| 2590 | if (h != NULL) |
| 2591 | { |
| 2592 | if (h->root.type == bfd_link_hash_undefweak |
| 2593 | && howto->pc_relative) |
| 2594 | { |
| 2595 | /* Assume this is a call protected by other code that |
| 2596 | detect the symbol is undefined. If this is the case, |
| 2597 | we can safely ignore the overflow. If not, the |
| 2598 | program is hosed anyway, and a little warning isn't |
| 2599 | going to help. */ |
| 2600 | break; |
| 2601 | } |
| 2602 | |
| 2603 | name = h->root.root.string; |
| 2604 | } |
| 2605 | else |
| 2606 | { |
| 2607 | name = (bfd_elf_string_from_elf_section |
| 2608 | (input_bfd, |
| 2609 | symtab_hdr->sh_link, |
| 2610 | sym->st_name)); |
| 2611 | if (name == NULL) |
| 2612 | return false; |
| 2613 | if (*name == '\0') |
| 2614 | name = bfd_section_name (input_bfd, sec); |
| 2615 | } |
| 2616 | if (! ((*info->callbacks->reloc_overflow) |
| 2617 | (info, name, howto->name, (bfd_vma) 0, |
| 2618 | input_bfd, input_section, rel->r_offset))) |
| 2619 | return false; |
| 2620 | } |
| 2621 | break; |
| 2622 | } |
| 2623 | } |
| 2624 | |
| 2625 | return true; |
| 2626 | } |
| 2627 | |
| 2628 | /* Finish up dynamic symbol handling. We set the contents of various |
| 2629 | dynamic sections here. */ |
| 2630 | |
| 2631 | static boolean |
| 2632 | sparc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym) |
| 2633 | bfd *output_bfd; |
| 2634 | struct bfd_link_info *info; |
| 2635 | struct elf_link_hash_entry *h; |
| 2636 | Elf_Internal_Sym *sym; |
| 2637 | { |
| 2638 | bfd *dynobj; |
| 2639 | |
| 2640 | dynobj = elf_hash_table (info)->dynobj; |
| 2641 | |
| 2642 | if (h->plt.offset != (bfd_vma) -1) |
| 2643 | { |
| 2644 | asection *splt; |
| 2645 | asection *srela; |
| 2646 | Elf_Internal_Rela rela; |
| 2647 | |
| 2648 | /* This symbol has an entry in the PLT. Set it up. */ |
| 2649 | |
| 2650 | BFD_ASSERT (h->dynindx != -1); |
| 2651 | |
| 2652 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 2653 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); |
| 2654 | BFD_ASSERT (splt != NULL && srela != NULL); |
| 2655 | |
| 2656 | /* Fill in the entry in the .rela.plt section. */ |
| 2657 | |
| 2658 | if (h->plt.offset < LARGE_PLT_THRESHOLD) |
| 2659 | { |
| 2660 | rela.r_offset = sparc64_elf_plt_entry_offset (h->plt.offset); |
| 2661 | rela.r_addend = 0; |
| 2662 | } |
| 2663 | else |
| 2664 | { |
| 2665 | bfd_vma max = splt->_raw_size / PLT_ENTRY_SIZE; |
| 2666 | rela.r_offset = sparc64_elf_plt_ptr_offset (h->plt.offset, max); |
| 2667 | rela.r_addend = -(sparc64_elf_plt_entry_offset (h->plt.offset) + 4) |
| 2668 | -(splt->output_section->vma + splt->output_offset); |
| 2669 | } |
| 2670 | rela.r_offset += (splt->output_section->vma + splt->output_offset); |
| 2671 | rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_JMP_SLOT); |
| 2672 | |
| 2673 | /* Adjust for the first 4 reserved elements in the .plt section |
| 2674 | when setting the offset in the .rela.plt section. |
| 2675 | Sun forgot to read their own ABI and copied elf32-sparc behaviour, |
| 2676 | thus .plt[4] has corresponding .rela.plt[0] and so on. */ |
| 2677 | |
| 2678 | bfd_elf64_swap_reloca_out (output_bfd, &rela, |
| 2679 | ((Elf64_External_Rela *) srela->contents |
| 2680 | + (h->plt.offset - 4))); |
| 2681 | |
| 2682 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) |
| 2683 | { |
| 2684 | /* Mark the symbol as undefined, rather than as defined in |
| 2685 | the .plt section. Leave the value alone. */ |
| 2686 | sym->st_shndx = SHN_UNDEF; |
| 2687 | /* If the symbol is weak, we do need to clear the value. |
| 2688 | Otherwise, the PLT entry would provide a definition for |
| 2689 | the symbol even if the symbol wasn't defined anywhere, |
| 2690 | and so the symbol would never be NULL. */ |
| 2691 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK) |
| 2692 | == 0) |
| 2693 | sym->st_value = 0; |
| 2694 | } |
| 2695 | } |
| 2696 | |
| 2697 | if (h->got.offset != (bfd_vma) -1) |
| 2698 | { |
| 2699 | asection *sgot; |
| 2700 | asection *srela; |
| 2701 | Elf_Internal_Rela rela; |
| 2702 | |
| 2703 | /* This symbol has an entry in the GOT. Set it up. */ |
| 2704 | |
| 2705 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 2706 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 2707 | BFD_ASSERT (sgot != NULL && srela != NULL); |
| 2708 | |
| 2709 | rela.r_offset = (sgot->output_section->vma |
| 2710 | + sgot->output_offset |
| 2711 | + (h->got.offset &~ (bfd_vma) 1)); |
| 2712 | |
| 2713 | /* If this is a -Bsymbolic link, and the symbol is defined |
| 2714 | locally, we just want to emit a RELATIVE reloc. Likewise if |
| 2715 | the symbol was forced to be local because of a version file. |
| 2716 | The entry in the global offset table will already have been |
| 2717 | initialized in the relocate_section function. */ |
| 2718 | if (info->shared |
| 2719 | && (info->symbolic || h->dynindx == -1) |
| 2720 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) |
| 2721 | { |
| 2722 | asection *sec = h->root.u.def.section; |
| 2723 | rela.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE); |
| 2724 | rela.r_addend = (h->root.u.def.value |
| 2725 | + sec->output_section->vma |
| 2726 | + sec->output_offset); |
| 2727 | } |
| 2728 | else |
| 2729 | { |
| 2730 | rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_GLOB_DAT); |
| 2731 | rela.r_addend = 0; |
| 2732 | } |
| 2733 | |
| 2734 | bfd_put_64 (output_bfd, (bfd_vma) 0, |
| 2735 | sgot->contents + (h->got.offset &~ (bfd_vma) 1)); |
| 2736 | bfd_elf64_swap_reloca_out (output_bfd, &rela, |
| 2737 | ((Elf64_External_Rela *) srela->contents |
| 2738 | + srela->reloc_count)); |
| 2739 | ++srela->reloc_count; |
| 2740 | } |
| 2741 | |
| 2742 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) |
| 2743 | { |
| 2744 | asection *s; |
| 2745 | Elf_Internal_Rela rela; |
| 2746 | |
| 2747 | /* This symbols needs a copy reloc. Set it up. */ |
| 2748 | |
| 2749 | BFD_ASSERT (h->dynindx != -1); |
| 2750 | |
| 2751 | s = bfd_get_section_by_name (h->root.u.def.section->owner, |
| 2752 | ".rela.bss"); |
| 2753 | BFD_ASSERT (s != NULL); |
| 2754 | |
| 2755 | rela.r_offset = (h->root.u.def.value |
| 2756 | + h->root.u.def.section->output_section->vma |
| 2757 | + h->root.u.def.section->output_offset); |
| 2758 | rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_COPY); |
| 2759 | rela.r_addend = 0; |
| 2760 | bfd_elf64_swap_reloca_out (output_bfd, &rela, |
| 2761 | ((Elf64_External_Rela *) s->contents |
| 2762 | + s->reloc_count)); |
| 2763 | ++s->reloc_count; |
| 2764 | } |
| 2765 | |
| 2766 | /* Mark some specially defined symbols as absolute. */ |
| 2767 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
| 2768 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 |
| 2769 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) |
| 2770 | sym->st_shndx = SHN_ABS; |
| 2771 | |
| 2772 | return true; |
| 2773 | } |
| 2774 | |
| 2775 | /* Finish up the dynamic sections. */ |
| 2776 | |
| 2777 | static boolean |
| 2778 | sparc64_elf_finish_dynamic_sections (output_bfd, info) |
| 2779 | bfd *output_bfd; |
| 2780 | struct bfd_link_info *info; |
| 2781 | { |
| 2782 | bfd *dynobj; |
| 2783 | int stt_regidx = -1; |
| 2784 | asection *sdyn; |
| 2785 | asection *sgot; |
| 2786 | |
| 2787 | dynobj = elf_hash_table (info)->dynobj; |
| 2788 | |
| 2789 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
| 2790 | |
| 2791 | if (elf_hash_table (info)->dynamic_sections_created) |
| 2792 | { |
| 2793 | asection *splt; |
| 2794 | Elf64_External_Dyn *dyncon, *dynconend; |
| 2795 | |
| 2796 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 2797 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
| 2798 | |
| 2799 | dyncon = (Elf64_External_Dyn *) sdyn->contents; |
| 2800 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size); |
| 2801 | for (; dyncon < dynconend; dyncon++) |
| 2802 | { |
| 2803 | Elf_Internal_Dyn dyn; |
| 2804 | const char *name; |
| 2805 | boolean size; |
| 2806 | |
| 2807 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); |
| 2808 | |
| 2809 | switch (dyn.d_tag) |
| 2810 | { |
| 2811 | case DT_PLTGOT: name = ".plt"; size = false; break; |
| 2812 | case DT_PLTRELSZ: name = ".rela.plt"; size = true; break; |
| 2813 | case DT_JMPREL: name = ".rela.plt"; size = false; break; |
| 2814 | case DT_SPARC_REGISTER: |
| 2815 | if (stt_regidx == -1) |
| 2816 | { |
| 2817 | stt_regidx = |
| 2818 | _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1); |
| 2819 | if (stt_regidx == -1) |
| 2820 | return false; |
| 2821 | } |
| 2822 | dyn.d_un.d_val = stt_regidx++; |
| 2823 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 2824 | /* fallthrough */ |
| 2825 | default: name = NULL; size = false; break; |
| 2826 | } |
| 2827 | |
| 2828 | if (name != NULL) |
| 2829 | { |
| 2830 | asection *s; |
| 2831 | |
| 2832 | s = bfd_get_section_by_name (output_bfd, name); |
| 2833 | if (s == NULL) |
| 2834 | dyn.d_un.d_val = 0; |
| 2835 | else |
| 2836 | { |
| 2837 | if (! size) |
| 2838 | dyn.d_un.d_ptr = s->vma; |
| 2839 | else |
| 2840 | { |
| 2841 | if (s->_cooked_size != 0) |
| 2842 | dyn.d_un.d_val = s->_cooked_size; |
| 2843 | else |
| 2844 | dyn.d_un.d_val = s->_raw_size; |
| 2845 | } |
| 2846 | } |
| 2847 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 2848 | } |
| 2849 | } |
| 2850 | |
| 2851 | /* Initialize the contents of the .plt section. */ |
| 2852 | if (splt->_raw_size > 0) |
| 2853 | { |
| 2854 | sparc64_elf_build_plt (output_bfd, splt->contents, |
| 2855 | (int) (splt->_raw_size / PLT_ENTRY_SIZE)); |
| 2856 | } |
| 2857 | |
| 2858 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = |
| 2859 | PLT_ENTRY_SIZE; |
| 2860 | } |
| 2861 | |
| 2862 | /* Set the first entry in the global offset table to the address of |
| 2863 | the dynamic section. */ |
| 2864 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 2865 | BFD_ASSERT (sgot != NULL); |
| 2866 | if (sgot->_raw_size > 0) |
| 2867 | { |
| 2868 | if (sdyn == NULL) |
| 2869 | bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents); |
| 2870 | else |
| 2871 | bfd_put_64 (output_bfd, |
| 2872 | sdyn->output_section->vma + sdyn->output_offset, |
| 2873 | sgot->contents); |
| 2874 | } |
| 2875 | |
| 2876 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 8; |
| 2877 | |
| 2878 | return true; |
| 2879 | } |
| 2880 | |
| 2881 | static enum elf_reloc_type_class |
| 2882 | sparc64_elf_reloc_type_class (rela) |
| 2883 | const Elf_Internal_Rela *rela; |
| 2884 | { |
| 2885 | switch ((int) ELF64_R_TYPE (rela->r_info)) |
| 2886 | { |
| 2887 | case R_SPARC_RELATIVE: |
| 2888 | return reloc_class_relative; |
| 2889 | case R_SPARC_JMP_SLOT: |
| 2890 | return reloc_class_plt; |
| 2891 | case R_SPARC_COPY: |
| 2892 | return reloc_class_copy; |
| 2893 | default: |
| 2894 | return reloc_class_normal; |
| 2895 | } |
| 2896 | } |
| 2897 | \f |
| 2898 | /* Functions for dealing with the e_flags field. */ |
| 2899 | |
| 2900 | /* Merge backend specific data from an object file to the output |
| 2901 | object file when linking. */ |
| 2902 | |
| 2903 | static boolean |
| 2904 | sparc64_elf_merge_private_bfd_data (ibfd, obfd) |
| 2905 | bfd *ibfd; |
| 2906 | bfd *obfd; |
| 2907 | { |
| 2908 | boolean error; |
| 2909 | flagword new_flags, old_flags; |
| 2910 | int new_mm, old_mm; |
| 2911 | |
| 2912 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
| 2913 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
| 2914 | return true; |
| 2915 | |
| 2916 | new_flags = elf_elfheader (ibfd)->e_flags; |
| 2917 | old_flags = elf_elfheader (obfd)->e_flags; |
| 2918 | |
| 2919 | if (!elf_flags_init (obfd)) /* First call, no flags set */ |
| 2920 | { |
| 2921 | elf_flags_init (obfd) = true; |
| 2922 | elf_elfheader (obfd)->e_flags = new_flags; |
| 2923 | } |
| 2924 | |
| 2925 | else if (new_flags == old_flags) /* Compatible flags are ok */ |
| 2926 | ; |
| 2927 | |
| 2928 | else /* Incompatible flags */ |
| 2929 | { |
| 2930 | error = false; |
| 2931 | |
| 2932 | #define EF_SPARC_ISA_EXTENSIONS \ |
| 2933 | (EF_SPARC_SUN_US1 | EF_SPARC_SUN_US3 | EF_SPARC_HAL_R1) |
| 2934 | |
| 2935 | if ((ibfd->flags & DYNAMIC) != 0) |
| 2936 | { |
| 2937 | /* We don't want dynamic objects memory ordering and |
| 2938 | architecture to have any role. That's what dynamic linker |
| 2939 | should do. */ |
| 2940 | new_flags &= ~(EF_SPARCV9_MM | EF_SPARC_ISA_EXTENSIONS); |
| 2941 | new_flags |= (old_flags |
| 2942 | & (EF_SPARCV9_MM | EF_SPARC_ISA_EXTENSIONS)); |
| 2943 | } |
| 2944 | else |
| 2945 | { |
| 2946 | /* Choose the highest architecture requirements. */ |
| 2947 | old_flags |= (new_flags & EF_SPARC_ISA_EXTENSIONS); |
| 2948 | new_flags |= (old_flags & EF_SPARC_ISA_EXTENSIONS); |
| 2949 | if ((old_flags & (EF_SPARC_SUN_US1 | EF_SPARC_SUN_US3)) |
| 2950 | && (old_flags & EF_SPARC_HAL_R1)) |
| 2951 | { |
| 2952 | error = true; |
| 2953 | (*_bfd_error_handler) |
| 2954 | (_("%s: linking UltraSPARC specific with HAL specific code"), |
| 2955 | bfd_archive_filename (ibfd)); |
| 2956 | } |
| 2957 | /* Choose the most restrictive memory ordering. */ |
| 2958 | old_mm = (old_flags & EF_SPARCV9_MM); |
| 2959 | new_mm = (new_flags & EF_SPARCV9_MM); |
| 2960 | old_flags &= ~EF_SPARCV9_MM; |
| 2961 | new_flags &= ~EF_SPARCV9_MM; |
| 2962 | if (new_mm < old_mm) |
| 2963 | old_mm = new_mm; |
| 2964 | old_flags |= old_mm; |
| 2965 | new_flags |= old_mm; |
| 2966 | } |
| 2967 | |
| 2968 | /* Warn about any other mismatches */ |
| 2969 | if (new_flags != old_flags) |
| 2970 | { |
| 2971 | error = true; |
| 2972 | (*_bfd_error_handler) |
| 2973 | (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), |
| 2974 | bfd_archive_filename (ibfd), (long) new_flags, (long) old_flags); |
| 2975 | } |
| 2976 | |
| 2977 | elf_elfheader (obfd)->e_flags = old_flags; |
| 2978 | |
| 2979 | if (error) |
| 2980 | { |
| 2981 | bfd_set_error (bfd_error_bad_value); |
| 2982 | return false; |
| 2983 | } |
| 2984 | } |
| 2985 | return true; |
| 2986 | } |
| 2987 | |
| 2988 | /* MARCO: Set the correct entry size for the .stab section. */ |
| 2989 | |
| 2990 | static boolean |
| 2991 | sparc64_elf_fake_sections (abfd, hdr, sec) |
| 2992 | bfd *abfd ATTRIBUTE_UNUSED; |
| 2993 | Elf32_Internal_Shdr *hdr ATTRIBUTE_UNUSED; |
| 2994 | asection *sec; |
| 2995 | { |
| 2996 | const char *name; |
| 2997 | |
| 2998 | name = bfd_get_section_name (abfd, sec); |
| 2999 | |
| 3000 | if (strcmp (name, ".stab") == 0) |
| 3001 | { |
| 3002 | /* Even in the 64bit case the stab entries are only 12 bytes long. */ |
| 3003 | elf_section_data (sec)->this_hdr.sh_entsize = 12; |
| 3004 | } |
| 3005 | |
| 3006 | return true; |
| 3007 | } |
| 3008 | \f |
| 3009 | /* Print a STT_REGISTER symbol to file FILE. */ |
| 3010 | |
| 3011 | static const char * |
| 3012 | sparc64_elf_print_symbol_all (abfd, filep, symbol) |
| 3013 | bfd *abfd ATTRIBUTE_UNUSED; |
| 3014 | PTR filep; |
| 3015 | asymbol *symbol; |
| 3016 | { |
| 3017 | FILE *file = (FILE *) filep; |
| 3018 | int reg, type; |
| 3019 | |
| 3020 | if (ELF_ST_TYPE (((elf_symbol_type *) symbol)->internal_elf_sym.st_info) |
| 3021 | != STT_REGISTER) |
| 3022 | return NULL; |
| 3023 | |
| 3024 | reg = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; |
| 3025 | type = symbol->flags; |
| 3026 | fprintf (file, "REG_%c%c%11s%c%c R", "GOLI" [reg / 8], '0' + (reg & 7), "", |
| 3027 | ((type & BSF_LOCAL) |
| 3028 | ? (type & BSF_GLOBAL) ? '!' : 'l' |
| 3029 | : (type & BSF_GLOBAL) ? 'g' : ' '), |
| 3030 | (type & BSF_WEAK) ? 'w' : ' '); |
| 3031 | if (symbol->name == NULL || symbol->name [0] == '\0') |
| 3032 | return "#scratch"; |
| 3033 | else |
| 3034 | return symbol->name; |
| 3035 | } |
| 3036 | \f |
| 3037 | /* Set the right machine number for a SPARC64 ELF file. */ |
| 3038 | |
| 3039 | static boolean |
| 3040 | sparc64_elf_object_p (abfd) |
| 3041 | bfd *abfd; |
| 3042 | { |
| 3043 | unsigned long mach = bfd_mach_sparc_v9; |
| 3044 | |
| 3045 | if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3) |
| 3046 | mach = bfd_mach_sparc_v9b; |
| 3047 | else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1) |
| 3048 | mach = bfd_mach_sparc_v9a; |
| 3049 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach); |
| 3050 | } |
| 3051 | |
| 3052 | /* Relocations in the 64 bit SPARC ELF ABI are more complex than in |
| 3053 | standard ELF, because R_SPARC_OLO10 has secondary addend in |
| 3054 | ELF64_R_TYPE_DATA field. This structure is used to redirect the |
| 3055 | relocation handling routines. */ |
| 3056 | |
| 3057 | const struct elf_size_info sparc64_elf_size_info = |
| 3058 | { |
| 3059 | sizeof (Elf64_External_Ehdr), |
| 3060 | sizeof (Elf64_External_Phdr), |
| 3061 | sizeof (Elf64_External_Shdr), |
| 3062 | sizeof (Elf64_External_Rel), |
| 3063 | sizeof (Elf64_External_Rela), |
| 3064 | sizeof (Elf64_External_Sym), |
| 3065 | sizeof (Elf64_External_Dyn), |
| 3066 | sizeof (Elf_External_Note), |
| 3067 | 4, /* hash-table entry size */ |
| 3068 | /* internal relocations per external relocations. |
| 3069 | For link purposes we use just 1 internal per |
| 3070 | 1 external, for assembly and slurp symbol table |
| 3071 | we use 2. */ |
| 3072 | 1, |
| 3073 | 64, /* arch_size */ |
| 3074 | 8, /* file_align */ |
| 3075 | ELFCLASS64, |
| 3076 | EV_CURRENT, |
| 3077 | bfd_elf64_write_out_phdrs, |
| 3078 | bfd_elf64_write_shdrs_and_ehdr, |
| 3079 | sparc64_elf_write_relocs, |
| 3080 | bfd_elf64_swap_symbol_in, |
| 3081 | bfd_elf64_swap_symbol_out, |
| 3082 | sparc64_elf_slurp_reloc_table, |
| 3083 | bfd_elf64_slurp_symbol_table, |
| 3084 | bfd_elf64_swap_dyn_in, |
| 3085 | bfd_elf64_swap_dyn_out, |
| 3086 | NULL, |
| 3087 | NULL, |
| 3088 | NULL, |
| 3089 | NULL |
| 3090 | }; |
| 3091 | |
| 3092 | #define TARGET_BIG_SYM bfd_elf64_sparc_vec |
| 3093 | #define TARGET_BIG_NAME "elf64-sparc" |
| 3094 | #define ELF_ARCH bfd_arch_sparc |
| 3095 | #define ELF_MAXPAGESIZE 0x100000 |
| 3096 | |
| 3097 | /* This is the official ABI value. */ |
| 3098 | #define ELF_MACHINE_CODE EM_SPARCV9 |
| 3099 | |
| 3100 | /* This is the value that we used before the ABI was released. */ |
| 3101 | #define ELF_MACHINE_ALT1 EM_OLD_SPARCV9 |
| 3102 | |
| 3103 | #define bfd_elf64_bfd_link_hash_table_create \ |
| 3104 | sparc64_elf_bfd_link_hash_table_create |
| 3105 | |
| 3106 | #define elf_info_to_howto \ |
| 3107 | sparc64_elf_info_to_howto |
| 3108 | #define bfd_elf64_get_reloc_upper_bound \ |
| 3109 | sparc64_elf_get_reloc_upper_bound |
| 3110 | #define bfd_elf64_get_dynamic_reloc_upper_bound \ |
| 3111 | sparc64_elf_get_dynamic_reloc_upper_bound |
| 3112 | #define bfd_elf64_canonicalize_dynamic_reloc \ |
| 3113 | sparc64_elf_canonicalize_dynamic_reloc |
| 3114 | #define bfd_elf64_bfd_reloc_type_lookup \ |
| 3115 | sparc64_elf_reloc_type_lookup |
| 3116 | #define bfd_elf64_bfd_relax_section \ |
| 3117 | sparc64_elf_relax_section |
| 3118 | |
| 3119 | #define elf_backend_create_dynamic_sections \ |
| 3120 | _bfd_elf_create_dynamic_sections |
| 3121 | #define elf_backend_add_symbol_hook \ |
| 3122 | sparc64_elf_add_symbol_hook |
| 3123 | #define elf_backend_get_symbol_type \ |
| 3124 | sparc64_elf_get_symbol_type |
| 3125 | #define elf_backend_symbol_processing \ |
| 3126 | sparc64_elf_symbol_processing |
| 3127 | #define elf_backend_check_relocs \ |
| 3128 | sparc64_elf_check_relocs |
| 3129 | #define elf_backend_adjust_dynamic_symbol \ |
| 3130 | sparc64_elf_adjust_dynamic_symbol |
| 3131 | #define elf_backend_size_dynamic_sections \ |
| 3132 | sparc64_elf_size_dynamic_sections |
| 3133 | #define elf_backend_relocate_section \ |
| 3134 | sparc64_elf_relocate_section |
| 3135 | #define elf_backend_finish_dynamic_symbol \ |
| 3136 | sparc64_elf_finish_dynamic_symbol |
| 3137 | #define elf_backend_finish_dynamic_sections \ |
| 3138 | sparc64_elf_finish_dynamic_sections |
| 3139 | #define elf_backend_print_symbol_all \ |
| 3140 | sparc64_elf_print_symbol_all |
| 3141 | #define elf_backend_output_arch_syms \ |
| 3142 | sparc64_elf_output_arch_syms |
| 3143 | #define bfd_elf64_bfd_merge_private_bfd_data \ |
| 3144 | sparc64_elf_merge_private_bfd_data |
| 3145 | #define elf_backend_fake_sections \ |
| 3146 | sparc64_elf_fake_sections |
| 3147 | |
| 3148 | #define elf_backend_size_info \ |
| 3149 | sparc64_elf_size_info |
| 3150 | #define elf_backend_object_p \ |
| 3151 | sparc64_elf_object_p |
| 3152 | #define elf_backend_reloc_type_class \ |
| 3153 | sparc64_elf_reloc_type_class |
| 3154 | |
| 3155 | #define elf_backend_want_got_plt 0 |
| 3156 | #define elf_backend_plt_readonly 0 |
| 3157 | #define elf_backend_want_plt_sym 1 |
| 3158 | #define elf_backend_rela_normal 1 |
| 3159 | |
| 3160 | /* Section 5.2.4 of the ABI specifies a 256-byte boundary for the table. */ |
| 3161 | #define elf_backend_plt_alignment 8 |
| 3162 | |
| 3163 | #define elf_backend_got_header_size 8 |
| 3164 | #define elf_backend_plt_header_size PLT_HEADER_SIZE |
| 3165 | |
| 3166 | #include "elf64-target.h" |