| 1 | /* SPARC-specific support for 64-bit ELF |
| 2 | Copyright (C) 1993, 95, 96, 97, 98, 1999 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of BFD, the Binary File Descriptor library. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 19 | |
| 20 | #include "bfd.h" |
| 21 | #include "sysdep.h" |
| 22 | #include "libbfd.h" |
| 23 | #include "elf-bfd.h" |
| 24 | |
| 25 | /* This is defined if one wants to build upward compatible binaries |
| 26 | with the original sparc64-elf toolchain. The support is kept in for |
| 27 | now but is turned off by default. dje 970930 */ |
| 28 | /*#define SPARC64_OLD_RELOCS*/ |
| 29 | |
| 30 | #include "elf/sparc.h" |
| 31 | |
| 32 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ |
| 33 | #define MINUS_ONE (~ (bfd_vma) 0) |
| 34 | |
| 35 | static struct bfd_link_hash_table * sparc64_elf_bfd_link_hash_table_create |
| 36 | PARAMS((bfd *)); |
| 37 | static reloc_howto_type *sparc64_elf_reloc_type_lookup |
| 38 | PARAMS ((bfd *, bfd_reloc_code_real_type)); |
| 39 | static void sparc64_elf_info_to_howto |
| 40 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
| 41 | |
| 42 | static void sparc64_elf_build_plt |
| 43 | PARAMS((bfd *, unsigned char *, int)); |
| 44 | static bfd_vma sparc64_elf_plt_entry_offset |
| 45 | PARAMS((int)); |
| 46 | static bfd_vma sparc64_elf_plt_ptr_offset |
| 47 | PARAMS((int, int)); |
| 48 | |
| 49 | static boolean sparc64_elf_check_relocs |
| 50 | PARAMS((bfd *, struct bfd_link_info *, asection *sec, |
| 51 | const Elf_Internal_Rela *)); |
| 52 | static boolean sparc64_elf_adjust_dynamic_symbol |
| 53 | PARAMS((struct bfd_link_info *, struct elf_link_hash_entry *)); |
| 54 | static boolean sparc64_elf_size_dynamic_sections |
| 55 | PARAMS((bfd *, struct bfd_link_info *)); |
| 56 | static int sparc64_elf_get_symbol_type |
| 57 | PARAMS (( Elf_Internal_Sym *, int)); |
| 58 | static boolean sparc64_elf_add_symbol_hook |
| 59 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, |
| 60 | const char **, flagword *, asection **, bfd_vma *)); |
| 61 | static void sparc64_elf_symbol_processing |
| 62 | PARAMS ((bfd *, asymbol *)); |
| 63 | |
| 64 | static boolean sparc64_elf_merge_private_bfd_data |
| 65 | PARAMS ((bfd *, bfd *)); |
| 66 | |
| 67 | static boolean sparc64_elf_relocate_section |
| 68 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
| 69 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); |
| 70 | static boolean sparc64_elf_object_p PARAMS ((bfd *)); |
| 71 | static long sparc64_elf_get_reloc_upper_bound PARAMS ((bfd *, asection *)); |
| 72 | static long sparc64_elf_get_dynamic_reloc_upper_bound PARAMS ((bfd *)); |
| 73 | static boolean sparc64_elf_slurp_one_reloc_table |
| 74 | PARAMS ((bfd *, asection *, Elf_Internal_Shdr *, asymbol **, boolean)); |
| 75 | static boolean sparc64_elf_slurp_reloc_table |
| 76 | PARAMS ((bfd *, asection *, asymbol **, boolean)); |
| 77 | static long sparc64_elf_canonicalize_dynamic_reloc |
| 78 | PARAMS ((bfd *, arelent **, asymbol **)); |
| 79 | static void sparc64_elf_write_relocs PARAMS ((bfd *, asection *, PTR)); |
| 80 | \f |
| 81 | /* The relocation "howto" table. */ |
| 82 | |
| 83 | static bfd_reloc_status_type sparc_elf_notsup_reloc |
| 84 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 85 | static bfd_reloc_status_type sparc_elf_wdisp16_reloc |
| 86 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 87 | static bfd_reloc_status_type sparc_elf_hix22_reloc |
| 88 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 89 | static bfd_reloc_status_type sparc_elf_lox10_reloc |
| 90 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 91 | |
| 92 | static reloc_howto_type sparc64_elf_howto_table[] = |
| 93 | { |
| 94 | HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), |
| 95 | HOWTO(R_SPARC_8, 0,0, 8,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", false,0,0x000000ff,true), |
| 96 | HOWTO(R_SPARC_16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", false,0,0x0000ffff,true), |
| 97 | HOWTO(R_SPARC_32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", false,0,0xffffffff,true), |
| 98 | HOWTO(R_SPARC_DISP8, 0,0, 8,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", false,0,0x000000ff,true), |
| 99 | HOWTO(R_SPARC_DISP16, 0,1,16,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", false,0,0x0000ffff,true), |
| 100 | HOWTO(R_SPARC_DISP32, 0,2,32,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", false,0,0x00ffffff,true), |
| 101 | HOWTO(R_SPARC_WDISP30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", false,0,0x3fffffff,true), |
| 102 | HOWTO(R_SPARC_WDISP22, 2,2,22,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", false,0,0x003fffff,true), |
| 103 | HOWTO(R_SPARC_HI22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", false,0,0x003fffff,true), |
| 104 | HOWTO(R_SPARC_22, 0,2,22,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", false,0,0x003fffff,true), |
| 105 | HOWTO(R_SPARC_13, 0,2,13,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", false,0,0x00001fff,true), |
| 106 | HOWTO(R_SPARC_LO10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", false,0,0x000003ff,true), |
| 107 | HOWTO(R_SPARC_GOT10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", false,0,0x000003ff,true), |
| 108 | HOWTO(R_SPARC_GOT13, 0,2,13,false,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", false,0,0x00001fff,true), |
| 109 | HOWTO(R_SPARC_GOT22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", false,0,0x003fffff,true), |
| 110 | HOWTO(R_SPARC_PC10, 0,2,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", false,0,0x000003ff,true), |
| 111 | HOWTO(R_SPARC_PC22, 10,2,22,true, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", false,0,0x003fffff,true), |
| 112 | HOWTO(R_SPARC_WPLT30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", false,0,0x3fffffff,true), |
| 113 | HOWTO(R_SPARC_COPY, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", false,0,0x00000000,true), |
| 114 | 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), |
| 115 | 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), |
| 116 | HOWTO(R_SPARC_RELATIVE, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",false,0,0x00000000,true), |
| 117 | HOWTO(R_SPARC_UA32, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UA32", false,0,0x00000000,true), |
| 118 | #ifndef SPARC64_OLD_RELOCS |
| 119 | /* These aren't implemented yet. */ |
| 120 | HOWTO(R_SPARC_PLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PLT32", false,0,0x00000000,true), |
| 121 | HOWTO(R_SPARC_HIPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_HIPLT22", false,0,0x00000000,true), |
| 122 | HOWTO(R_SPARC_LOPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_LOPLT10", false,0,0x00000000,true), |
| 123 | HOWTO(R_SPARC_PCPLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT32", false,0,0x00000000,true), |
| 124 | HOWTO(R_SPARC_PCPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT22", false,0,0x00000000,true), |
| 125 | HOWTO(R_SPARC_PCPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT10", false,0,0x00000000,true), |
| 126 | #endif |
| 127 | HOWTO(R_SPARC_10, 0,2,10,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", false,0,0x000003ff,true), |
| 128 | HOWTO(R_SPARC_11, 0,2,11,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", false,0,0x000007ff,true), |
| 129 | HOWTO(R_SPARC_64, 0,4,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", false,0,MINUS_ONE, true), |
| 130 | HOWTO(R_SPARC_OLO10, 0,2,13,false,0,complain_overflow_signed, sparc_elf_notsup_reloc, "R_SPARC_OLO10", false,0,0x00001fff,true), |
| 131 | HOWTO(R_SPARC_HH22, 42,2,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", false,0,0x003fffff,true), |
| 132 | HOWTO(R_SPARC_HM10, 32,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", false,0,0x000003ff,true), |
| 133 | HOWTO(R_SPARC_LM22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", false,0,0x003fffff,true), |
| 134 | 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), |
| 135 | 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), |
| 136 | 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), |
| 137 | HOWTO(R_SPARC_WDISP16, 2,2,16,true, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", false,0,0x00000000,true), |
| 138 | HOWTO(R_SPARC_WDISP19, 2,2,19,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", false,0,0x0007ffff,true), |
| 139 | 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), |
| 140 | HOWTO(R_SPARC_7, 0,2, 7,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", false,0,0x0000007f,true), |
| 141 | HOWTO(R_SPARC_5, 0,2, 5,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", false,0,0x0000001f,true), |
| 142 | HOWTO(R_SPARC_6, 0,2, 6,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", false,0,0x0000003f,true), |
| 143 | HOWTO(R_SPARC_DISP64, 0,4,64,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP64", false,0,MINUS_ONE, true), |
| 144 | HOWTO(R_SPARC_PLT64, 0,4,64,false,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_PLT64", false,0,MINUS_ONE, false), |
| 145 | HOWTO(R_SPARC_HIX22, 0,4, 0,false,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_HIX22", false,0,MINUS_ONE, false), |
| 146 | HOWTO(R_SPARC_LOX10, 0,4, 0,false,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_LOX10", false,0,MINUS_ONE, false), |
| 147 | HOWTO(R_SPARC_H44, 22,2,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_H44", false,0,0x003fffff,false), |
| 148 | HOWTO(R_SPARC_M44, 12,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_M44", false,0,0x000003ff,false), |
| 149 | HOWTO(R_SPARC_L44, 0,2,13,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_L44", false,0,0x00000fff,false), |
| 150 | HOWTO(R_SPARC_REGISTER, 0,4, 0,false,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_REGISTER",false,0,MINUS_ONE, false), |
| 151 | HOWTO(R_SPARC_UA64, 0,4,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA64", false,0,MINUS_ONE, true), |
| 152 | HOWTO(R_SPARC_UA16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", false,0,0x0000ffff,true) |
| 153 | }; |
| 154 | |
| 155 | struct elf_reloc_map { |
| 156 | bfd_reloc_code_real_type bfd_reloc_val; |
| 157 | unsigned char elf_reloc_val; |
| 158 | }; |
| 159 | |
| 160 | static CONST struct elf_reloc_map sparc_reloc_map[] = |
| 161 | { |
| 162 | { BFD_RELOC_NONE, R_SPARC_NONE, }, |
| 163 | { BFD_RELOC_16, R_SPARC_16, }, |
| 164 | { BFD_RELOC_8, R_SPARC_8 }, |
| 165 | { BFD_RELOC_8_PCREL, R_SPARC_DISP8 }, |
| 166 | { BFD_RELOC_CTOR, R_SPARC_64 }, |
| 167 | { BFD_RELOC_32, R_SPARC_32 }, |
| 168 | { BFD_RELOC_32_PCREL, R_SPARC_DISP32 }, |
| 169 | { BFD_RELOC_HI22, R_SPARC_HI22 }, |
| 170 | { BFD_RELOC_LO10, R_SPARC_LO10, }, |
| 171 | { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 }, |
| 172 | { BFD_RELOC_SPARC22, R_SPARC_22 }, |
| 173 | { BFD_RELOC_SPARC13, R_SPARC_13 }, |
| 174 | { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 }, |
| 175 | { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 }, |
| 176 | { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 }, |
| 177 | { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 }, |
| 178 | { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 }, |
| 179 | { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 }, |
| 180 | { BFD_RELOC_SPARC_COPY, R_SPARC_COPY }, |
| 181 | { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT }, |
| 182 | { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT }, |
| 183 | { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE }, |
| 184 | { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 }, |
| 185 | /* ??? Doesn't dwarf use this? */ |
| 186 | /*{ BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, not used?? */ |
| 187 | {BFD_RELOC_SPARC_10, R_SPARC_10}, |
| 188 | {BFD_RELOC_SPARC_11, R_SPARC_11}, |
| 189 | {BFD_RELOC_SPARC_64, R_SPARC_64}, |
| 190 | {BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10}, |
| 191 | {BFD_RELOC_SPARC_HH22, R_SPARC_HH22}, |
| 192 | {BFD_RELOC_SPARC_HM10, R_SPARC_HM10}, |
| 193 | {BFD_RELOC_SPARC_LM22, R_SPARC_LM22}, |
| 194 | {BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22}, |
| 195 | {BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10}, |
| 196 | {BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22}, |
| 197 | {BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16}, |
| 198 | {BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19}, |
| 199 | {BFD_RELOC_SPARC_7, R_SPARC_7}, |
| 200 | {BFD_RELOC_SPARC_5, R_SPARC_5}, |
| 201 | {BFD_RELOC_SPARC_6, R_SPARC_6}, |
| 202 | {BFD_RELOC_SPARC_DISP64, R_SPARC_DISP64}, |
| 203 | {BFD_RELOC_SPARC_PLT64, R_SPARC_PLT64}, |
| 204 | {BFD_RELOC_SPARC_HIX22, R_SPARC_HIX22}, |
| 205 | {BFD_RELOC_SPARC_LOX10, R_SPARC_LOX10}, |
| 206 | {BFD_RELOC_SPARC_H44, R_SPARC_H44}, |
| 207 | {BFD_RELOC_SPARC_M44, R_SPARC_M44}, |
| 208 | {BFD_RELOC_SPARC_L44, R_SPARC_L44}, |
| 209 | {BFD_RELOC_SPARC_REGISTER, R_SPARC_REGISTER} |
| 210 | }; |
| 211 | |
| 212 | static reloc_howto_type * |
| 213 | sparc64_elf_reloc_type_lookup (abfd, code) |
| 214 | bfd *abfd; |
| 215 | bfd_reloc_code_real_type code; |
| 216 | { |
| 217 | unsigned int i; |
| 218 | for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); i++) |
| 219 | { |
| 220 | if (sparc_reloc_map[i].bfd_reloc_val == code) |
| 221 | return &sparc64_elf_howto_table[(int) sparc_reloc_map[i].elf_reloc_val]; |
| 222 | } |
| 223 | return 0; |
| 224 | } |
| 225 | |
| 226 | static void |
| 227 | sparc64_elf_info_to_howto (abfd, cache_ptr, dst) |
| 228 | bfd *abfd; |
| 229 | arelent *cache_ptr; |
| 230 | Elf64_Internal_Rela *dst; |
| 231 | { |
| 232 | BFD_ASSERT (ELF64_R_TYPE_ID (dst->r_info) < (unsigned int) R_SPARC_max_std); |
| 233 | cache_ptr->howto = &sparc64_elf_howto_table[ELF64_R_TYPE_ID (dst->r_info)]; |
| 234 | } |
| 235 | \f |
| 236 | /* Due to the way how we handle R_SPARC_OLO10, each entry in a SHT_RELA |
| 237 | section can represent up to two relocs, we must tell the user to allocate |
| 238 | more space. */ |
| 239 | |
| 240 | static long |
| 241 | sparc64_elf_get_reloc_upper_bound (abfd, sec) |
| 242 | bfd *abfd; |
| 243 | asection *sec; |
| 244 | { |
| 245 | return (sec->reloc_count * 2 + 1) * sizeof (arelent *); |
| 246 | } |
| 247 | |
| 248 | static long |
| 249 | sparc64_elf_get_dynamic_reloc_upper_bound (abfd) |
| 250 | bfd *abfd; |
| 251 | { |
| 252 | return _bfd_elf_get_dynamic_reloc_upper_bound (abfd) * 2; |
| 253 | } |
| 254 | |
| 255 | /* Read relocations for ASECT from REL_HDR. There are RELOC_COUNT of |
| 256 | them. We cannot use generic elf routines for this, because R_SPARC_OLO10 |
| 257 | has secondary addend in ELF64_R_TYPE_DATA. We handle it as two relocations |
| 258 | for the same location, R_SPARC_LO10 and R_SPARC_13. */ |
| 259 | |
| 260 | static boolean |
| 261 | sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr, symbols, dynamic) |
| 262 | bfd *abfd; |
| 263 | asection *asect; |
| 264 | Elf_Internal_Shdr *rel_hdr; |
| 265 | asymbol **symbols; |
| 266 | boolean dynamic; |
| 267 | { |
| 268 | struct elf_backend_data * const ebd = get_elf_backend_data (abfd); |
| 269 | PTR allocated = NULL; |
| 270 | bfd_byte *native_relocs; |
| 271 | arelent *relent; |
| 272 | unsigned int i; |
| 273 | int entsize; |
| 274 | bfd_size_type count; |
| 275 | arelent *relents; |
| 276 | |
| 277 | allocated = (PTR) bfd_malloc ((size_t) rel_hdr->sh_size); |
| 278 | if (allocated == NULL) |
| 279 | goto error_return; |
| 280 | |
| 281 | if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0 |
| 282 | || (bfd_read (allocated, 1, rel_hdr->sh_size, abfd) |
| 283 | != rel_hdr->sh_size)) |
| 284 | goto error_return; |
| 285 | |
| 286 | native_relocs = (bfd_byte *) allocated; |
| 287 | |
| 288 | relents = asect->relocation + asect->reloc_count; |
| 289 | |
| 290 | entsize = rel_hdr->sh_entsize; |
| 291 | BFD_ASSERT (entsize == sizeof (Elf64_External_Rela)); |
| 292 | |
| 293 | count = rel_hdr->sh_size / entsize; |
| 294 | |
| 295 | for (i = 0, relent = relents; i < count; |
| 296 | i++, relent++, native_relocs += entsize) |
| 297 | { |
| 298 | Elf_Internal_Rela rela; |
| 299 | |
| 300 | bfd_elf64_swap_reloca_in (abfd, (Elf64_External_Rela *) native_relocs, &rela); |
| 301 | |
| 302 | /* The address of an ELF reloc is section relative for an object |
| 303 | file, and absolute for an executable file or shared library. |
| 304 | The address of a normal BFD reloc is always section relative, |
| 305 | and the address of a dynamic reloc is absolute.. */ |
| 306 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 || dynamic) |
| 307 | relent->address = rela.r_offset; |
| 308 | else |
| 309 | relent->address = rela.r_offset - asect->vma; |
| 310 | |
| 311 | if (ELF64_R_SYM (rela.r_info) == 0) |
| 312 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
| 313 | else |
| 314 | { |
| 315 | asymbol **ps, *s; |
| 316 | |
| 317 | ps = symbols + ELF64_R_SYM (rela.r_info) - 1; |
| 318 | s = *ps; |
| 319 | |
| 320 | /* Canonicalize ELF section symbols. FIXME: Why? */ |
| 321 | if ((s->flags & BSF_SECTION_SYM) == 0) |
| 322 | relent->sym_ptr_ptr = ps; |
| 323 | else |
| 324 | relent->sym_ptr_ptr = s->section->symbol_ptr_ptr; |
| 325 | } |
| 326 | |
| 327 | relent->addend = rela.r_addend; |
| 328 | |
| 329 | BFD_ASSERT (ELF64_R_TYPE_ID (rela.r_info) < (unsigned int) R_SPARC_max_std); |
| 330 | if (ELF64_R_TYPE_ID (rela.r_info) == R_SPARC_OLO10) |
| 331 | { |
| 332 | relent->howto = &sparc64_elf_howto_table[R_SPARC_LO10]; |
| 333 | relent[1].address = relent->address; |
| 334 | relent++; |
| 335 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
| 336 | relent->addend = ELF64_R_TYPE_DATA (rela.r_info); |
| 337 | relent->howto = &sparc64_elf_howto_table[R_SPARC_13]; |
| 338 | } |
| 339 | else |
| 340 | relent->howto = &sparc64_elf_howto_table[ELF64_R_TYPE_ID (rela.r_info)]; |
| 341 | } |
| 342 | |
| 343 | asect->reloc_count += relent - relents; |
| 344 | |
| 345 | if (allocated != NULL) |
| 346 | free (allocated); |
| 347 | |
| 348 | return true; |
| 349 | |
| 350 | error_return: |
| 351 | if (allocated != NULL) |
| 352 | free (allocated); |
| 353 | return false; |
| 354 | } |
| 355 | |
| 356 | /* Read in and swap the external relocs. */ |
| 357 | |
| 358 | static boolean |
| 359 | sparc64_elf_slurp_reloc_table (abfd, asect, symbols, dynamic) |
| 360 | bfd *abfd; |
| 361 | asection *asect; |
| 362 | asymbol **symbols; |
| 363 | boolean dynamic; |
| 364 | { |
| 365 | struct bfd_elf_section_data * const d = elf_section_data (asect); |
| 366 | Elf_Internal_Shdr *rel_hdr; |
| 367 | Elf_Internal_Shdr *rel_hdr2; |
| 368 | |
| 369 | if (asect->relocation != NULL) |
| 370 | return true; |
| 371 | |
| 372 | if (! dynamic) |
| 373 | { |
| 374 | if ((asect->flags & SEC_RELOC) == 0 |
| 375 | || asect->reloc_count == 0) |
| 376 | return true; |
| 377 | |
| 378 | rel_hdr = &d->rel_hdr; |
| 379 | rel_hdr2 = d->rel_hdr2; |
| 380 | |
| 381 | BFD_ASSERT (asect->rel_filepos == rel_hdr->sh_offset |
| 382 | || (rel_hdr2 && asect->rel_filepos == rel_hdr2->sh_offset)); |
| 383 | } |
| 384 | else |
| 385 | { |
| 386 | /* Note that ASECT->RELOC_COUNT tends not to be accurate in this |
| 387 | case because relocations against this section may use the |
| 388 | dynamic symbol table, and in that case bfd_section_from_shdr |
| 389 | in elf.c does not update the RELOC_COUNT. */ |
| 390 | if (asect->_raw_size == 0) |
| 391 | return true; |
| 392 | |
| 393 | rel_hdr = &d->this_hdr; |
| 394 | asect->reloc_count = rel_hdr->sh_size / rel_hdr->sh_entsize; |
| 395 | rel_hdr2 = NULL; |
| 396 | } |
| 397 | |
| 398 | asect->relocation = ((arelent *) |
| 399 | bfd_alloc (abfd, |
| 400 | asect->reloc_count * 2 * sizeof (arelent))); |
| 401 | if (asect->relocation == NULL) |
| 402 | return false; |
| 403 | |
| 404 | /* The sparc64_elf_slurp_one_reloc_table routine increments reloc_count. */ |
| 405 | asect->reloc_count = 0; |
| 406 | |
| 407 | if (!sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr, symbols, |
| 408 | dynamic)) |
| 409 | return false; |
| 410 | |
| 411 | if (rel_hdr2 |
| 412 | && !sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr2, symbols, |
| 413 | dynamic)) |
| 414 | return false; |
| 415 | |
| 416 | return true; |
| 417 | } |
| 418 | |
| 419 | /* Canonicalize the dynamic relocation entries. Note that we return |
| 420 | the dynamic relocations as a single block, although they are |
| 421 | actually associated with particular sections; the interface, which |
| 422 | was designed for SunOS style shared libraries, expects that there |
| 423 | is only one set of dynamic relocs. Any section that was actually |
| 424 | installed in the BFD, and has type SHT_REL or SHT_RELA, and uses |
| 425 | the dynamic symbol table, is considered to be a dynamic reloc |
| 426 | section. */ |
| 427 | |
| 428 | static long |
| 429 | sparc64_elf_canonicalize_dynamic_reloc (abfd, storage, syms) |
| 430 | bfd *abfd; |
| 431 | arelent **storage; |
| 432 | asymbol **syms; |
| 433 | { |
| 434 | asection *s; |
| 435 | long ret; |
| 436 | |
| 437 | if (elf_dynsymtab (abfd) == 0) |
| 438 | { |
| 439 | bfd_set_error (bfd_error_invalid_operation); |
| 440 | return -1; |
| 441 | } |
| 442 | |
| 443 | ret = 0; |
| 444 | for (s = abfd->sections; s != NULL; s = s->next) |
| 445 | { |
| 446 | if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) |
| 447 | && (elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) |
| 448 | { |
| 449 | arelent *p; |
| 450 | long count, i; |
| 451 | |
| 452 | if (! sparc64_elf_slurp_reloc_table (abfd, s, syms, true)) |
| 453 | return -1; |
| 454 | count = s->reloc_count; |
| 455 | p = s->relocation; |
| 456 | for (i = 0; i < count; i++) |
| 457 | *storage++ = p++; |
| 458 | ret += count; |
| 459 | } |
| 460 | } |
| 461 | |
| 462 | *storage = NULL; |
| 463 | |
| 464 | return ret; |
| 465 | } |
| 466 | |
| 467 | /* Write out the relocs. */ |
| 468 | |
| 469 | static void |
| 470 | sparc64_elf_write_relocs (abfd, sec, data) |
| 471 | bfd *abfd; |
| 472 | asection *sec; |
| 473 | PTR data; |
| 474 | { |
| 475 | boolean *failedp = (boolean *) data; |
| 476 | Elf_Internal_Shdr *rela_hdr; |
| 477 | Elf64_External_Rela *outbound_relocas; |
| 478 | unsigned int idx, count; |
| 479 | asymbol *last_sym = 0; |
| 480 | int last_sym_idx = 0; |
| 481 | |
| 482 | /* If we have already failed, don't do anything. */ |
| 483 | if (*failedp) |
| 484 | return; |
| 485 | |
| 486 | if ((sec->flags & SEC_RELOC) == 0) |
| 487 | return; |
| 488 | |
| 489 | /* The linker backend writes the relocs out itself, and sets the |
| 490 | reloc_count field to zero to inhibit writing them here. Also, |
| 491 | sometimes the SEC_RELOC flag gets set even when there aren't any |
| 492 | relocs. */ |
| 493 | if (sec->reloc_count == 0) |
| 494 | return; |
| 495 | |
| 496 | /* We can combine two relocs that refer to the same address |
| 497 | into R_SPARC_OLO10 if first one is R_SPARC_LO10 and the |
| 498 | latter is R_SPARC_13 with no associated symbol. */ |
| 499 | count = 0; |
| 500 | for (idx = 0; idx < sec->reloc_count; idx++) |
| 501 | { |
| 502 | bfd_vma addr; |
| 503 | unsigned int i; |
| 504 | |
| 505 | ++count; |
| 506 | |
| 507 | addr = sec->orelocation[idx]->address; |
| 508 | if (sec->orelocation[idx]->howto->type == R_SPARC_LO10 |
| 509 | && idx < sec->reloc_count - 1) |
| 510 | { |
| 511 | arelent *r = sec->orelocation[idx + 1]; |
| 512 | |
| 513 | if (r->howto->type == R_SPARC_13 |
| 514 | && r->address == addr |
| 515 | && bfd_is_abs_section ((*r->sym_ptr_ptr)->section) |
| 516 | && (*r->sym_ptr_ptr)->value == 0) |
| 517 | ++idx; |
| 518 | } |
| 519 | } |
| 520 | |
| 521 | rela_hdr = &elf_section_data (sec)->rel_hdr; |
| 522 | |
| 523 | rela_hdr->sh_size = rela_hdr->sh_entsize * count; |
| 524 | rela_hdr->contents = (PTR) bfd_alloc (abfd, rela_hdr->sh_size); |
| 525 | if (rela_hdr->contents == NULL) |
| 526 | { |
| 527 | *failedp = true; |
| 528 | return; |
| 529 | } |
| 530 | |
| 531 | /* Figure out whether the relocations are RELA or REL relocations. */ |
| 532 | if (rela_hdr->sh_type != SHT_RELA) |
| 533 | abort (); |
| 534 | |
| 535 | /* orelocation has the data, reloc_count has the count... */ |
| 536 | outbound_relocas = (Elf64_External_Rela *) rela_hdr->contents; |
| 537 | |
| 538 | for (idx = 0; idx < sec->reloc_count; idx++) |
| 539 | { |
| 540 | Elf_Internal_Rela dst_rela; |
| 541 | Elf64_External_Rela *src_rela; |
| 542 | arelent *ptr; |
| 543 | asymbol *sym; |
| 544 | int n; |
| 545 | |
| 546 | ptr = sec->orelocation[idx]; |
| 547 | src_rela = outbound_relocas + idx; |
| 548 | |
| 549 | /* The address of an ELF reloc is section relative for an object |
| 550 | file, and absolute for an executable file or shared library. |
| 551 | The address of a BFD reloc is always section relative. */ |
| 552 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) |
| 553 | dst_rela.r_offset = ptr->address; |
| 554 | else |
| 555 | dst_rela.r_offset = ptr->address + sec->vma; |
| 556 | |
| 557 | sym = *ptr->sym_ptr_ptr; |
| 558 | if (sym == last_sym) |
| 559 | n = last_sym_idx; |
| 560 | else if (bfd_is_abs_section (sym->section) && sym->value == 0) |
| 561 | n = STN_UNDEF; |
| 562 | else |
| 563 | { |
| 564 | last_sym = sym; |
| 565 | n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym); |
| 566 | if (n < 0) |
| 567 | { |
| 568 | *failedp = true; |
| 569 | return; |
| 570 | } |
| 571 | last_sym_idx = n; |
| 572 | } |
| 573 | |
| 574 | if ((*ptr->sym_ptr_ptr)->the_bfd != NULL |
| 575 | && (*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec |
| 576 | && ! _bfd_elf_validate_reloc (abfd, ptr)) |
| 577 | { |
| 578 | *failedp = true; |
| 579 | return; |
| 580 | } |
| 581 | |
| 582 | if (ptr->howto->type == R_SPARC_LO10 |
| 583 | && idx < sec->reloc_count - 1) |
| 584 | { |
| 585 | arelent *r = sec->orelocation[idx + 1]; |
| 586 | |
| 587 | if (r->howto->type == R_SPARC_13 |
| 588 | && r->address == ptr->address |
| 589 | && bfd_is_abs_section ((*r->sym_ptr_ptr)->section) |
| 590 | && (*r->sym_ptr_ptr)->value == 0) |
| 591 | { |
| 592 | idx++; |
| 593 | dst_rela.r_info |
| 594 | = ELF64_R_INFO (n, ELF64_R_TYPE_INFO (r->addend, |
| 595 | R_SPARC_OLO10)); |
| 596 | } |
| 597 | else |
| 598 | dst_rela.r_info = ELF64_R_INFO (n, R_SPARC_LO10); |
| 599 | } |
| 600 | else |
| 601 | dst_rela.r_info = ELF64_R_INFO (n, ptr->howto->type); |
| 602 | |
| 603 | dst_rela.r_addend = ptr->addend; |
| 604 | bfd_elf64_swap_reloca_out (abfd, &dst_rela, src_rela); |
| 605 | } |
| 606 | } |
| 607 | \f |
| 608 | /* Sparc64 ELF linker hash table. */ |
| 609 | |
| 610 | struct sparc64_elf_app_reg |
| 611 | { |
| 612 | unsigned char bind; |
| 613 | unsigned short shndx; |
| 614 | bfd *abfd; |
| 615 | char *name; |
| 616 | }; |
| 617 | |
| 618 | struct sparc64_elf_link_hash_table |
| 619 | { |
| 620 | struct elf_link_hash_table root; |
| 621 | |
| 622 | struct sparc64_elf_app_reg app_regs [4]; |
| 623 | }; |
| 624 | |
| 625 | /* Get the Sparc64 ELF linker hash table from a link_info structure. */ |
| 626 | |
| 627 | #define sparc64_elf_hash_table(p) \ |
| 628 | ((struct sparc64_elf_link_hash_table *) ((p)->hash)) |
| 629 | |
| 630 | /* Create a Sparc64 ELF linker hash table. */ |
| 631 | |
| 632 | static struct bfd_link_hash_table * |
| 633 | sparc64_elf_bfd_link_hash_table_create (abfd) |
| 634 | bfd *abfd; |
| 635 | { |
| 636 | struct sparc64_elf_link_hash_table *ret; |
| 637 | |
| 638 | ret = ((struct sparc64_elf_link_hash_table *) |
| 639 | bfd_zalloc (abfd, sizeof (struct sparc64_elf_link_hash_table))); |
| 640 | if (ret == (struct sparc64_elf_link_hash_table *) NULL) |
| 641 | return NULL; |
| 642 | |
| 643 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, |
| 644 | _bfd_elf_link_hash_newfunc)) |
| 645 | { |
| 646 | bfd_release (abfd, ret); |
| 647 | return NULL; |
| 648 | } |
| 649 | |
| 650 | return &ret->root.root; |
| 651 | } |
| 652 | |
| 653 | \f |
| 654 | /* Utility for performing the standard initial work of an instruction |
| 655 | relocation. |
| 656 | *PRELOCATION will contain the relocated item. |
| 657 | *PINSN will contain the instruction from the input stream. |
| 658 | If the result is `bfd_reloc_other' the caller can continue with |
| 659 | performing the relocation. Otherwise it must stop and return the |
| 660 | value to its caller. */ |
| 661 | |
| 662 | static bfd_reloc_status_type |
| 663 | init_insn_reloc (abfd, |
| 664 | reloc_entry, |
| 665 | symbol, |
| 666 | data, |
| 667 | input_section, |
| 668 | output_bfd, |
| 669 | prelocation, |
| 670 | pinsn) |
| 671 | bfd *abfd; |
| 672 | arelent *reloc_entry; |
| 673 | asymbol *symbol; |
| 674 | PTR data; |
| 675 | asection *input_section; |
| 676 | bfd *output_bfd; |
| 677 | bfd_vma *prelocation; |
| 678 | bfd_vma *pinsn; |
| 679 | { |
| 680 | bfd_vma relocation; |
| 681 | reloc_howto_type *howto = reloc_entry->howto; |
| 682 | |
| 683 | if (output_bfd != (bfd *) NULL |
| 684 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 685 | && (! howto->partial_inplace |
| 686 | || reloc_entry->addend == 0)) |
| 687 | { |
| 688 | reloc_entry->address += input_section->output_offset; |
| 689 | return bfd_reloc_ok; |
| 690 | } |
| 691 | |
| 692 | /* This works because partial_inplace == false. */ |
| 693 | if (output_bfd != NULL) |
| 694 | return bfd_reloc_continue; |
| 695 | |
| 696 | if (reloc_entry->address > input_section->_cooked_size) |
| 697 | return bfd_reloc_outofrange; |
| 698 | |
| 699 | relocation = (symbol->value |
| 700 | + symbol->section->output_section->vma |
| 701 | + symbol->section->output_offset); |
| 702 | relocation += reloc_entry->addend; |
| 703 | if (howto->pc_relative) |
| 704 | { |
| 705 | relocation -= (input_section->output_section->vma |
| 706 | + input_section->output_offset); |
| 707 | relocation -= reloc_entry->address; |
| 708 | } |
| 709 | |
| 710 | *prelocation = relocation; |
| 711 | *pinsn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); |
| 712 | return bfd_reloc_other; |
| 713 | } |
| 714 | |
| 715 | /* For unsupported relocs. */ |
| 716 | |
| 717 | static bfd_reloc_status_type |
| 718 | sparc_elf_notsup_reloc (abfd, |
| 719 | reloc_entry, |
| 720 | symbol, |
| 721 | data, |
| 722 | input_section, |
| 723 | output_bfd, |
| 724 | error_message) |
| 725 | bfd *abfd; |
| 726 | arelent *reloc_entry; |
| 727 | asymbol *symbol; |
| 728 | PTR data; |
| 729 | asection *input_section; |
| 730 | bfd *output_bfd; |
| 731 | char **error_message; |
| 732 | { |
| 733 | return bfd_reloc_notsupported; |
| 734 | } |
| 735 | |
| 736 | /* Handle the WDISP16 reloc. */ |
| 737 | |
| 738 | static bfd_reloc_status_type |
| 739 | sparc_elf_wdisp16_reloc (abfd, reloc_entry, symbol, data, input_section, |
| 740 | output_bfd, error_message) |
| 741 | bfd *abfd; |
| 742 | arelent *reloc_entry; |
| 743 | asymbol *symbol; |
| 744 | PTR data; |
| 745 | asection *input_section; |
| 746 | bfd *output_bfd; |
| 747 | char **error_message; |
| 748 | { |
| 749 | bfd_vma relocation; |
| 750 | bfd_vma insn; |
| 751 | bfd_reloc_status_type status; |
| 752 | |
| 753 | status = init_insn_reloc (abfd, reloc_entry, symbol, data, |
| 754 | input_section, output_bfd, &relocation, &insn); |
| 755 | if (status != bfd_reloc_other) |
| 756 | return status; |
| 757 | |
| 758 | insn = (insn & ~0x303fff) | ((((relocation >> 2) & 0xc000) << 6) |
| 759 | | ((relocation >> 2) & 0x3fff)); |
| 760 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); |
| 761 | |
| 762 | if ((bfd_signed_vma) relocation < - 0x40000 |
| 763 | || (bfd_signed_vma) relocation > 0x3ffff) |
| 764 | return bfd_reloc_overflow; |
| 765 | else |
| 766 | return bfd_reloc_ok; |
| 767 | } |
| 768 | |
| 769 | /* Handle the HIX22 reloc. */ |
| 770 | |
| 771 | static bfd_reloc_status_type |
| 772 | sparc_elf_hix22_reloc (abfd, |
| 773 | reloc_entry, |
| 774 | symbol, |
| 775 | data, |
| 776 | input_section, |
| 777 | output_bfd, |
| 778 | error_message) |
| 779 | bfd *abfd; |
| 780 | arelent *reloc_entry; |
| 781 | asymbol *symbol; |
| 782 | PTR data; |
| 783 | asection *input_section; |
| 784 | bfd *output_bfd; |
| 785 | char **error_message; |
| 786 | { |
| 787 | bfd_vma relocation; |
| 788 | bfd_vma insn; |
| 789 | bfd_reloc_status_type status; |
| 790 | |
| 791 | status = init_insn_reloc (abfd, reloc_entry, symbol, data, |
| 792 | input_section, output_bfd, &relocation, &insn); |
| 793 | if (status != bfd_reloc_other) |
| 794 | return status; |
| 795 | |
| 796 | relocation ^= MINUS_ONE; |
| 797 | insn = (insn & ~0x3fffff) | ((relocation >> 10) & 0x3fffff); |
| 798 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); |
| 799 | |
| 800 | if ((relocation & ~ (bfd_vma) 0xffffffff) != 0) |
| 801 | return bfd_reloc_overflow; |
| 802 | else |
| 803 | return bfd_reloc_ok; |
| 804 | } |
| 805 | |
| 806 | /* Handle the LOX10 reloc. */ |
| 807 | |
| 808 | static bfd_reloc_status_type |
| 809 | sparc_elf_lox10_reloc (abfd, |
| 810 | reloc_entry, |
| 811 | symbol, |
| 812 | data, |
| 813 | input_section, |
| 814 | output_bfd, |
| 815 | error_message) |
| 816 | bfd *abfd; |
| 817 | arelent *reloc_entry; |
| 818 | asymbol *symbol; |
| 819 | PTR data; |
| 820 | asection *input_section; |
| 821 | bfd *output_bfd; |
| 822 | char **error_message; |
| 823 | { |
| 824 | bfd_vma relocation; |
| 825 | bfd_vma insn; |
| 826 | bfd_reloc_status_type status; |
| 827 | |
| 828 | status = init_insn_reloc (abfd, reloc_entry, symbol, data, |
| 829 | input_section, output_bfd, &relocation, &insn); |
| 830 | if (status != bfd_reloc_other) |
| 831 | return status; |
| 832 | |
| 833 | insn = (insn & ~0x1fff) | 0x1c00 | (relocation & 0x3ff); |
| 834 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); |
| 835 | |
| 836 | return bfd_reloc_ok; |
| 837 | } |
| 838 | \f |
| 839 | /* PLT/GOT stuff */ |
| 840 | |
| 841 | /* Both the headers and the entries are icache aligned. */ |
| 842 | #define PLT_ENTRY_SIZE 32 |
| 843 | #define PLT_HEADER_SIZE (4 * PLT_ENTRY_SIZE) |
| 844 | #define LARGE_PLT_THRESHOLD 32768 |
| 845 | #define GOT_RESERVED_ENTRIES 1 |
| 846 | |
| 847 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1" |
| 848 | |
| 849 | |
| 850 | /* Fill in the .plt section. */ |
| 851 | |
| 852 | static void |
| 853 | sparc64_elf_build_plt (output_bfd, contents, nentries) |
| 854 | bfd *output_bfd; |
| 855 | unsigned char *contents; |
| 856 | int nentries; |
| 857 | { |
| 858 | const unsigned int nop = 0x01000000; |
| 859 | int i, j; |
| 860 | |
| 861 | /* The first four entries are reserved, and are initially undefined. |
| 862 | We fill them with `illtrap 0' to force ld.so to do something. */ |
| 863 | |
| 864 | for (i = 0; i < PLT_HEADER_SIZE/4; ++i) |
| 865 | bfd_put_32 (output_bfd, 0, contents+i*4); |
| 866 | |
| 867 | /* The first 32768 entries are close enough to plt1 to get there via |
| 868 | a straight branch. */ |
| 869 | |
| 870 | for (i = 4; i < LARGE_PLT_THRESHOLD && i < nentries; ++i) |
| 871 | { |
| 872 | unsigned char *entry = contents + i * PLT_ENTRY_SIZE; |
| 873 | unsigned int sethi, ba; |
| 874 | |
| 875 | /* sethi (. - plt0), %g1 */ |
| 876 | sethi = 0x03000000 | (i * PLT_ENTRY_SIZE); |
| 877 | |
| 878 | /* ba,a,pt %xcc, plt1 */ |
| 879 | ba = 0x30680000 | (((contents+PLT_ENTRY_SIZE) - (entry+4)) / 4 & 0x7ffff); |
| 880 | |
| 881 | bfd_put_32 (output_bfd, sethi, entry); |
| 882 | bfd_put_32 (output_bfd, ba, entry+4); |
| 883 | bfd_put_32 (output_bfd, nop, entry+8); |
| 884 | bfd_put_32 (output_bfd, nop, entry+12); |
| 885 | bfd_put_32 (output_bfd, nop, entry+16); |
| 886 | bfd_put_32 (output_bfd, nop, entry+20); |
| 887 | bfd_put_32 (output_bfd, nop, entry+24); |
| 888 | bfd_put_32 (output_bfd, nop, entry+28); |
| 889 | } |
| 890 | |
| 891 | /* Now the tricky bit. Entries 32768 and higher are grouped in blocks of |
| 892 | 160: 160 entries and 160 pointers. This is to separate code from data, |
| 893 | which is much friendlier on the cache. */ |
| 894 | |
| 895 | for (; i < nentries; i += 160) |
| 896 | { |
| 897 | int block = (i + 160 <= nentries ? 160 : nentries - i); |
| 898 | for (j = 0; j < block; ++j) |
| 899 | { |
| 900 | unsigned char *entry, *ptr; |
| 901 | unsigned int ldx; |
| 902 | |
| 903 | entry = contents + i*PLT_ENTRY_SIZE + j*4*6; |
| 904 | ptr = contents + i*PLT_ENTRY_SIZE + block*4*6 + j*8; |
| 905 | |
| 906 | /* ldx [%o7 + ptr - entry+4], %g1 */ |
| 907 | ldx = 0xc25be000 | ((ptr - entry+4) & 0x1fff); |
| 908 | |
| 909 | bfd_put_32 (output_bfd, 0x8a10000f, entry); /* mov %o7,%g5 */ |
| 910 | bfd_put_32 (output_bfd, 0x40000002, entry+4); /* call .+8 */ |
| 911 | bfd_put_32 (output_bfd, nop, entry+8); /* nop */ |
| 912 | bfd_put_32 (output_bfd, ldx, entry+12); /* ldx [%o7+P],%g1 */ |
| 913 | bfd_put_32 (output_bfd, 0x83c3c001, entry+16); /* jmpl %o7+%g1,%g1 */ |
| 914 | bfd_put_32 (output_bfd, 0x9e100005, entry+20); /* mov %g5,%o7 */ |
| 915 | |
| 916 | bfd_put_64 (output_bfd, contents - (entry+4), ptr); |
| 917 | } |
| 918 | } |
| 919 | } |
| 920 | |
| 921 | /* Return the offset of a particular plt entry within the .plt section. */ |
| 922 | |
| 923 | static bfd_vma |
| 924 | sparc64_elf_plt_entry_offset (index) |
| 925 | int index; |
| 926 | { |
| 927 | int block, ofs; |
| 928 | |
| 929 | if (index < LARGE_PLT_THRESHOLD) |
| 930 | return index * PLT_ENTRY_SIZE; |
| 931 | |
| 932 | /* See above for details. */ |
| 933 | |
| 934 | block = (index - LARGE_PLT_THRESHOLD) / 160; |
| 935 | ofs = (index - LARGE_PLT_THRESHOLD) % 160; |
| 936 | |
| 937 | return ((bfd_vma)(LARGE_PLT_THRESHOLD + block*160) * PLT_ENTRY_SIZE |
| 938 | + ofs * 6*4); |
| 939 | } |
| 940 | |
| 941 | static bfd_vma |
| 942 | sparc64_elf_plt_ptr_offset (index, max) |
| 943 | int index, max; |
| 944 | { |
| 945 | int block, ofs, last; |
| 946 | |
| 947 | BFD_ASSERT(index >= LARGE_PLT_THRESHOLD); |
| 948 | |
| 949 | /* See above for details. */ |
| 950 | |
| 951 | block = (((index - LARGE_PLT_THRESHOLD) / 160) * 160) |
| 952 | + LARGE_PLT_THRESHOLD; |
| 953 | ofs = index - block; |
| 954 | if (block + 160 > max) |
| 955 | last = (max - LARGE_PLT_THRESHOLD) % 160; |
| 956 | else |
| 957 | last = 160; |
| 958 | |
| 959 | return (block * PLT_ENTRY_SIZE |
| 960 | + last * 6*4 |
| 961 | + ofs * 8); |
| 962 | } |
| 963 | |
| 964 | |
| 965 | \f |
| 966 | /* Look through the relocs for a section during the first phase, and |
| 967 | allocate space in the global offset table or procedure linkage |
| 968 | table. */ |
| 969 | |
| 970 | static boolean |
| 971 | sparc64_elf_check_relocs (abfd, info, sec, relocs) |
| 972 | bfd *abfd; |
| 973 | struct bfd_link_info *info; |
| 974 | asection *sec; |
| 975 | const Elf_Internal_Rela *relocs; |
| 976 | { |
| 977 | bfd *dynobj; |
| 978 | Elf_Internal_Shdr *symtab_hdr; |
| 979 | struct elf_link_hash_entry **sym_hashes; |
| 980 | bfd_vma *local_got_offsets; |
| 981 | const Elf_Internal_Rela *rel; |
| 982 | const Elf_Internal_Rela *rel_end; |
| 983 | asection *sgot; |
| 984 | asection *srelgot; |
| 985 | asection *sreloc; |
| 986 | |
| 987 | if (info->relocateable || !(sec->flags & SEC_ALLOC)) |
| 988 | return true; |
| 989 | |
| 990 | dynobj = elf_hash_table (info)->dynobj; |
| 991 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 992 | sym_hashes = elf_sym_hashes (abfd); |
| 993 | local_got_offsets = elf_local_got_offsets (abfd); |
| 994 | |
| 995 | sgot = NULL; |
| 996 | srelgot = NULL; |
| 997 | sreloc = NULL; |
| 998 | |
| 999 | rel_end = relocs + sec->reloc_count; |
| 1000 | for (rel = relocs; rel < rel_end; rel++) |
| 1001 | { |
| 1002 | unsigned long r_symndx; |
| 1003 | struct elf_link_hash_entry *h; |
| 1004 | |
| 1005 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 1006 | if (r_symndx < symtab_hdr->sh_info) |
| 1007 | h = NULL; |
| 1008 | else |
| 1009 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 1010 | |
| 1011 | switch (ELF64_R_TYPE_ID (rel->r_info)) |
| 1012 | { |
| 1013 | case R_SPARC_GOT10: |
| 1014 | case R_SPARC_GOT13: |
| 1015 | case R_SPARC_GOT22: |
| 1016 | /* This symbol requires a global offset table entry. */ |
| 1017 | |
| 1018 | if (dynobj == NULL) |
| 1019 | { |
| 1020 | /* Create the .got section. */ |
| 1021 | elf_hash_table (info)->dynobj = dynobj = abfd; |
| 1022 | if (! _bfd_elf_create_got_section (dynobj, info)) |
| 1023 | return false; |
| 1024 | } |
| 1025 | |
| 1026 | if (sgot == NULL) |
| 1027 | { |
| 1028 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 1029 | BFD_ASSERT (sgot != NULL); |
| 1030 | } |
| 1031 | |
| 1032 | if (srelgot == NULL && (h != NULL || info->shared)) |
| 1033 | { |
| 1034 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 1035 | if (srelgot == NULL) |
| 1036 | { |
| 1037 | srelgot = bfd_make_section (dynobj, ".rela.got"); |
| 1038 | if (srelgot == NULL |
| 1039 | || ! bfd_set_section_flags (dynobj, srelgot, |
| 1040 | (SEC_ALLOC |
| 1041 | | SEC_LOAD |
| 1042 | | SEC_HAS_CONTENTS |
| 1043 | | SEC_IN_MEMORY |
| 1044 | | SEC_LINKER_CREATED |
| 1045 | | SEC_READONLY)) |
| 1046 | || ! bfd_set_section_alignment (dynobj, srelgot, 3)) |
| 1047 | return false; |
| 1048 | } |
| 1049 | } |
| 1050 | |
| 1051 | if (h != NULL) |
| 1052 | { |
| 1053 | if (h->got.offset != (bfd_vma) -1) |
| 1054 | { |
| 1055 | /* We have already allocated space in the .got. */ |
| 1056 | break; |
| 1057 | } |
| 1058 | h->got.offset = sgot->_raw_size; |
| 1059 | |
| 1060 | /* Make sure this symbol is output as a dynamic symbol. */ |
| 1061 | if (h->dynindx == -1) |
| 1062 | { |
| 1063 | if (! bfd_elf64_link_record_dynamic_symbol (info, h)) |
| 1064 | return false; |
| 1065 | } |
| 1066 | |
| 1067 | srelgot->_raw_size += sizeof (Elf64_External_Rela); |
| 1068 | } |
| 1069 | else |
| 1070 | { |
| 1071 | /* This is a global offset table entry for a local |
| 1072 | symbol. */ |
| 1073 | if (local_got_offsets == NULL) |
| 1074 | { |
| 1075 | size_t size; |
| 1076 | register unsigned int i; |
| 1077 | |
| 1078 | size = symtab_hdr->sh_info * sizeof (bfd_vma); |
| 1079 | local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size); |
| 1080 | if (local_got_offsets == NULL) |
| 1081 | return false; |
| 1082 | elf_local_got_offsets (abfd) = local_got_offsets; |
| 1083 | for (i = 0; i < symtab_hdr->sh_info; i++) |
| 1084 | local_got_offsets[i] = (bfd_vma) -1; |
| 1085 | } |
| 1086 | if (local_got_offsets[r_symndx] != (bfd_vma) -1) |
| 1087 | { |
| 1088 | /* We have already allocated space in the .got. */ |
| 1089 | break; |
| 1090 | } |
| 1091 | local_got_offsets[r_symndx] = sgot->_raw_size; |
| 1092 | |
| 1093 | if (info->shared) |
| 1094 | { |
| 1095 | /* If we are generating a shared object, we need to |
| 1096 | output a R_SPARC_RELATIVE reloc so that the |
| 1097 | dynamic linker can adjust this GOT entry. */ |
| 1098 | srelgot->_raw_size += sizeof (Elf64_External_Rela); |
| 1099 | } |
| 1100 | } |
| 1101 | |
| 1102 | sgot->_raw_size += 8; |
| 1103 | |
| 1104 | #if 0 |
| 1105 | /* Doesn't work for 64-bit -fPIC, since sethi/or builds |
| 1106 | unsigned numbers. If we permit ourselves to modify |
| 1107 | code so we get sethi/xor, this could work. |
| 1108 | Question: do we consider conditionally re-enabling |
| 1109 | this for -fpic, once we know about object code models? */ |
| 1110 | /* If the .got section is more than 0x1000 bytes, we add |
| 1111 | 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13 |
| 1112 | bit relocations have a greater chance of working. */ |
| 1113 | if (sgot->_raw_size >= 0x1000 |
| 1114 | && elf_hash_table (info)->hgot->root.u.def.value == 0) |
| 1115 | elf_hash_table (info)->hgot->root.u.def.value = 0x1000; |
| 1116 | #endif |
| 1117 | |
| 1118 | break; |
| 1119 | |
| 1120 | case R_SPARC_WPLT30: |
| 1121 | case R_SPARC_PLT32: |
| 1122 | case R_SPARC_HIPLT22: |
| 1123 | case R_SPARC_LOPLT10: |
| 1124 | case R_SPARC_PCPLT32: |
| 1125 | case R_SPARC_PCPLT22: |
| 1126 | case R_SPARC_PCPLT10: |
| 1127 | case R_SPARC_PLT64: |
| 1128 | /* This symbol requires a procedure linkage table entry. We |
| 1129 | actually build the entry in adjust_dynamic_symbol, |
| 1130 | because this might be a case of linking PIC code without |
| 1131 | linking in any dynamic objects, in which case we don't |
| 1132 | need to generate a procedure linkage table after all. */ |
| 1133 | |
| 1134 | if (h == NULL) |
| 1135 | { |
| 1136 | /* It does not make sense to have a procedure linkage |
| 1137 | table entry for a local symbol. */ |
| 1138 | bfd_set_error (bfd_error_bad_value); |
| 1139 | return false; |
| 1140 | } |
| 1141 | |
| 1142 | /* Make sure this symbol is output as a dynamic symbol. */ |
| 1143 | if (h->dynindx == -1) |
| 1144 | { |
| 1145 | if (! bfd_elf64_link_record_dynamic_symbol (info, h)) |
| 1146 | return false; |
| 1147 | } |
| 1148 | |
| 1149 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; |
| 1150 | break; |
| 1151 | |
| 1152 | case R_SPARC_PC10: |
| 1153 | case R_SPARC_PC22: |
| 1154 | case R_SPARC_PC_HH22: |
| 1155 | case R_SPARC_PC_HM10: |
| 1156 | case R_SPARC_PC_LM22: |
| 1157 | if (h != NULL |
| 1158 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) |
| 1159 | break; |
| 1160 | /* Fall through. */ |
| 1161 | case R_SPARC_DISP8: |
| 1162 | case R_SPARC_DISP16: |
| 1163 | case R_SPARC_DISP32: |
| 1164 | case R_SPARC_DISP64: |
| 1165 | case R_SPARC_WDISP30: |
| 1166 | case R_SPARC_WDISP22: |
| 1167 | case R_SPARC_WDISP19: |
| 1168 | case R_SPARC_WDISP16: |
| 1169 | if (h == NULL) |
| 1170 | break; |
| 1171 | /* Fall through. */ |
| 1172 | case R_SPARC_8: |
| 1173 | case R_SPARC_16: |
| 1174 | case R_SPARC_32: |
| 1175 | case R_SPARC_HI22: |
| 1176 | case R_SPARC_22: |
| 1177 | case R_SPARC_13: |
| 1178 | case R_SPARC_LO10: |
| 1179 | case R_SPARC_UA32: |
| 1180 | case R_SPARC_10: |
| 1181 | case R_SPARC_11: |
| 1182 | case R_SPARC_64: |
| 1183 | case R_SPARC_OLO10: |
| 1184 | case R_SPARC_HH22: |
| 1185 | case R_SPARC_HM10: |
| 1186 | case R_SPARC_LM22: |
| 1187 | case R_SPARC_7: |
| 1188 | case R_SPARC_5: |
| 1189 | case R_SPARC_6: |
| 1190 | case R_SPARC_HIX22: |
| 1191 | case R_SPARC_LOX10: |
| 1192 | case R_SPARC_H44: |
| 1193 | case R_SPARC_M44: |
| 1194 | case R_SPARC_L44: |
| 1195 | case R_SPARC_UA64: |
| 1196 | case R_SPARC_UA16: |
| 1197 | /* When creating a shared object, we must copy these relocs |
| 1198 | into the output file. We create a reloc section in |
| 1199 | dynobj and make room for the reloc. |
| 1200 | |
| 1201 | But don't do this for debugging sections -- this shows up |
| 1202 | with DWARF2 -- first because they are not loaded, and |
| 1203 | second because DWARF sez the debug info is not to be |
| 1204 | biased by the load address. */ |
| 1205 | if (info->shared && (sec->flags & SEC_ALLOC)) |
| 1206 | { |
| 1207 | if (sreloc == NULL) |
| 1208 | { |
| 1209 | const char *name; |
| 1210 | |
| 1211 | name = (bfd_elf_string_from_elf_section |
| 1212 | (abfd, |
| 1213 | elf_elfheader (abfd)->e_shstrndx, |
| 1214 | elf_section_data (sec)->rel_hdr.sh_name)); |
| 1215 | if (name == NULL) |
| 1216 | return false; |
| 1217 | |
| 1218 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 |
| 1219 | && strcmp (bfd_get_section_name (abfd, sec), |
| 1220 | name + 5) == 0); |
| 1221 | |
| 1222 | sreloc = bfd_get_section_by_name (dynobj, name); |
| 1223 | if (sreloc == NULL) |
| 1224 | { |
| 1225 | flagword flags; |
| 1226 | |
| 1227 | sreloc = bfd_make_section (dynobj, name); |
| 1228 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
| 1229 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); |
| 1230 | if ((sec->flags & SEC_ALLOC) != 0) |
| 1231 | flags |= SEC_ALLOC | SEC_LOAD; |
| 1232 | if (sreloc == NULL |
| 1233 | || ! bfd_set_section_flags (dynobj, sreloc, flags) |
| 1234 | || ! bfd_set_section_alignment (dynobj, sreloc, 3)) |
| 1235 | return false; |
| 1236 | } |
| 1237 | } |
| 1238 | |
| 1239 | sreloc->_raw_size += sizeof (Elf64_External_Rela); |
| 1240 | } |
| 1241 | break; |
| 1242 | |
| 1243 | case R_SPARC_REGISTER: |
| 1244 | /* Nothing to do. */ |
| 1245 | break; |
| 1246 | |
| 1247 | default: |
| 1248 | (*_bfd_error_handler)(_("%s: check_relocs: unhandled reloc type %d"), |
| 1249 | bfd_get_filename(abfd), |
| 1250 | ELF64_R_TYPE_ID (rel->r_info)); |
| 1251 | return false; |
| 1252 | } |
| 1253 | } |
| 1254 | |
| 1255 | return true; |
| 1256 | } |
| 1257 | |
| 1258 | /* Hook called by the linker routine which adds symbols from an object |
| 1259 | file. We use it for STT_REGISTER symbols. */ |
| 1260 | |
| 1261 | static boolean |
| 1262 | sparc64_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) |
| 1263 | bfd *abfd; |
| 1264 | struct bfd_link_info *info; |
| 1265 | const Elf_Internal_Sym *sym; |
| 1266 | const char **namep; |
| 1267 | flagword *flagsp; |
| 1268 | asection **secp; |
| 1269 | bfd_vma *valp; |
| 1270 | { |
| 1271 | static char *stt_types[] = { "NOTYPE", "OBJECT", "FUNCTION" }; |
| 1272 | |
| 1273 | if (ELF_ST_TYPE (sym->st_info) == STT_REGISTER) |
| 1274 | { |
| 1275 | int reg; |
| 1276 | struct sparc64_elf_app_reg *p; |
| 1277 | |
| 1278 | reg = (int)sym->st_value; |
| 1279 | switch (reg & ~1) |
| 1280 | { |
| 1281 | case 2: reg -= 2; break; |
| 1282 | case 6: reg -= 4; break; |
| 1283 | default: |
| 1284 | (*_bfd_error_handler) |
| 1285 | (_("%s: Only registers %%g[2367] can be declared using STT_REGISTER"), |
| 1286 | bfd_get_filename (abfd)); |
| 1287 | return false; |
| 1288 | } |
| 1289 | |
| 1290 | if (info->hash->creator != abfd->xvec |
| 1291 | || (abfd->flags & DYNAMIC) != 0) |
| 1292 | { |
| 1293 | /* STT_REGISTER only works when linking an elf64_sparc object. |
| 1294 | If STT_REGISTER comes from a dynamic object, don't put it into |
| 1295 | the output bfd. The dynamic linker will recheck it. */ |
| 1296 | *namep = NULL; |
| 1297 | return true; |
| 1298 | } |
| 1299 | |
| 1300 | p = sparc64_elf_hash_table(info)->app_regs + reg; |
| 1301 | |
| 1302 | if (p->name != NULL && strcmp (p->name, *namep)) |
| 1303 | { |
| 1304 | (*_bfd_error_handler) |
| 1305 | (_("Register %%g%d used incompatibly: " |
| 1306 | "previously declared in %s to %s, in %s redefined to %s"), |
| 1307 | (int)sym->st_value, |
| 1308 | bfd_get_filename (p->abfd), *p->name ? p->name : "#scratch", |
| 1309 | bfd_get_filename (abfd), **namep ? *namep : "#scratch"); |
| 1310 | return false; |
| 1311 | } |
| 1312 | |
| 1313 | if (p->name == NULL) |
| 1314 | { |
| 1315 | if (**namep) |
| 1316 | { |
| 1317 | struct elf_link_hash_entry *h; |
| 1318 | |
| 1319 | h = (struct elf_link_hash_entry *) |
| 1320 | bfd_link_hash_lookup (info->hash, *namep, false, false, false); |
| 1321 | |
| 1322 | if (h != NULL) |
| 1323 | { |
| 1324 | unsigned char type = h->type; |
| 1325 | |
| 1326 | if (type > STT_FUNC) type = 0; |
| 1327 | (*_bfd_error_handler) |
| 1328 | (_("Symbol `%s' has differing types: " |
| 1329 | "previously %s, REGISTER in %s"), |
| 1330 | *namep, stt_types [type], bfd_get_filename (abfd)); |
| 1331 | return false; |
| 1332 | } |
| 1333 | |
| 1334 | p->name = bfd_hash_allocate (&info->hash->table, |
| 1335 | strlen (*namep) + 1); |
| 1336 | if (!p->name) |
| 1337 | return false; |
| 1338 | |
| 1339 | strcpy (p->name, *namep); |
| 1340 | } |
| 1341 | else |
| 1342 | p->name = ""; |
| 1343 | p->bind = ELF_ST_BIND (sym->st_info); |
| 1344 | p->abfd = abfd; |
| 1345 | p->shndx = sym->st_shndx; |
| 1346 | } |
| 1347 | else |
| 1348 | { |
| 1349 | if (p->bind == STB_WEAK |
| 1350 | && ELF_ST_BIND (sym->st_info) == STB_GLOBAL) |
| 1351 | { |
| 1352 | p->bind = STB_GLOBAL; |
| 1353 | p->abfd = abfd; |
| 1354 | } |
| 1355 | } |
| 1356 | *namep = NULL; |
| 1357 | return true; |
| 1358 | } |
| 1359 | else if (! *namep || ! **namep) |
| 1360 | return true; |
| 1361 | else |
| 1362 | { |
| 1363 | int i; |
| 1364 | struct sparc64_elf_app_reg *p; |
| 1365 | |
| 1366 | p = sparc64_elf_hash_table(info)->app_regs; |
| 1367 | for (i = 0; i < 4; i++, p++) |
| 1368 | if (p->name != NULL && ! strcmp (p->name, *namep)) |
| 1369 | { |
| 1370 | unsigned char type = ELF_ST_TYPE (sym->st_info); |
| 1371 | |
| 1372 | if (type > STT_FUNC) type = 0; |
| 1373 | (*_bfd_error_handler) |
| 1374 | (_("Symbol `%s' has differing types: " |
| 1375 | "REGISTER in %s, %s in %s"), |
| 1376 | *namep, bfd_get_filename (p->abfd), stt_types [type], |
| 1377 | bfd_get_filename (abfd)); |
| 1378 | return false; |
| 1379 | } |
| 1380 | } |
| 1381 | return true; |
| 1382 | } |
| 1383 | |
| 1384 | /* This function takes care of emiting STT_REGISTER symbols |
| 1385 | which we cannot easily keep in the symbol hash table. */ |
| 1386 | |
| 1387 | static boolean |
| 1388 | sparc64_elf_output_arch_syms (output_bfd, info, finfo, func) |
| 1389 | bfd *output_bfd; |
| 1390 | struct bfd_link_info *info; |
| 1391 | PTR finfo; |
| 1392 | boolean (*func) PARAMS ((PTR, const char *, |
| 1393 | Elf_Internal_Sym *, asection *)); |
| 1394 | { |
| 1395 | int reg; |
| 1396 | struct sparc64_elf_app_reg *app_regs = |
| 1397 | sparc64_elf_hash_table(info)->app_regs; |
| 1398 | Elf_Internal_Sym sym; |
| 1399 | |
| 1400 | /* We arranged in size_dynamic_sections to put the STT_REGISTER entries |
| 1401 | at the end of the dynlocal list, so they came at the end of the local |
| 1402 | symbols in the symtab. Except that they aren't STB_LOCAL, so we need |
| 1403 | to back up symtab->sh_info. */ |
| 1404 | if (elf_hash_table (info)->dynlocal) |
| 1405 | { |
| 1406 | bfd * dynobj = elf_hash_table (info)->dynobj; |
| 1407 | asection *dynsymsec = bfd_get_section_by_name (dynobj, ".dynsym"); |
| 1408 | struct elf_link_local_dynamic_entry *e; |
| 1409 | |
| 1410 | for (e = elf_hash_table (info)->dynlocal; e ; e = e->next) |
| 1411 | if (e->input_indx == -1) |
| 1412 | break; |
| 1413 | if (e) |
| 1414 | { |
| 1415 | elf_section_data (dynsymsec->output_section)->this_hdr.sh_info |
| 1416 | = e->dynindx; |
| 1417 | } |
| 1418 | } |
| 1419 | |
| 1420 | if (info->strip == strip_all) |
| 1421 | return true; |
| 1422 | |
| 1423 | for (reg = 0; reg < 4; reg++) |
| 1424 | if (app_regs [reg].name != NULL) |
| 1425 | { |
| 1426 | if (info->strip == strip_some |
| 1427 | && bfd_hash_lookup (info->keep_hash, |
| 1428 | app_regs [reg].name, |
| 1429 | false, false) == NULL) |
| 1430 | continue; |
| 1431 | |
| 1432 | sym.st_value = reg < 2 ? reg + 2 : reg + 4; |
| 1433 | sym.st_size = 0; |
| 1434 | sym.st_other = 0; |
| 1435 | sym.st_info = ELF_ST_INFO (app_regs [reg].bind, STT_REGISTER); |
| 1436 | sym.st_shndx = app_regs [reg].shndx; |
| 1437 | if (! (*func) (finfo, app_regs [reg].name, &sym, |
| 1438 | sym.st_shndx == SHN_ABS |
| 1439 | ? bfd_abs_section_ptr : bfd_und_section_ptr)) |
| 1440 | return false; |
| 1441 | } |
| 1442 | |
| 1443 | return true; |
| 1444 | } |
| 1445 | |
| 1446 | static int |
| 1447 | sparc64_elf_get_symbol_type (elf_sym, type) |
| 1448 | Elf_Internal_Sym * elf_sym; |
| 1449 | int type; |
| 1450 | { |
| 1451 | if (ELF_ST_TYPE (elf_sym->st_info) == STT_REGISTER) |
| 1452 | return STT_REGISTER; |
| 1453 | else |
| 1454 | return type; |
| 1455 | } |
| 1456 | |
| 1457 | /* A STB_GLOBAL,STT_REGISTER symbol should be BSF_GLOBAL |
| 1458 | even in SHN_UNDEF section. */ |
| 1459 | |
| 1460 | static void |
| 1461 | sparc64_elf_symbol_processing (abfd, asym) |
| 1462 | bfd *abfd; |
| 1463 | asymbol *asym; |
| 1464 | { |
| 1465 | elf_symbol_type *elfsym; |
| 1466 | |
| 1467 | elfsym = (elf_symbol_type *) asym; |
| 1468 | if (elfsym->internal_elf_sym.st_info |
| 1469 | == ELF_ST_INFO (STB_GLOBAL, STT_REGISTER)) |
| 1470 | { |
| 1471 | asym->flags |= BSF_GLOBAL; |
| 1472 | } |
| 1473 | } |
| 1474 | |
| 1475 | /* Adjust a symbol defined by a dynamic object and referenced by a |
| 1476 | regular object. The current definition is in some section of the |
| 1477 | dynamic object, but we're not including those sections. We have to |
| 1478 | change the definition to something the rest of the link can |
| 1479 | understand. */ |
| 1480 | |
| 1481 | static boolean |
| 1482 | sparc64_elf_adjust_dynamic_symbol (info, h) |
| 1483 | struct bfd_link_info *info; |
| 1484 | struct elf_link_hash_entry *h; |
| 1485 | { |
| 1486 | bfd *dynobj; |
| 1487 | asection *s; |
| 1488 | unsigned int power_of_two; |
| 1489 | |
| 1490 | dynobj = elf_hash_table (info)->dynobj; |
| 1491 | |
| 1492 | /* Make sure we know what is going on here. */ |
| 1493 | BFD_ASSERT (dynobj != NULL |
| 1494 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) |
| 1495 | || h->weakdef != NULL |
| 1496 | || ((h->elf_link_hash_flags |
| 1497 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 |
| 1498 | && (h->elf_link_hash_flags |
| 1499 | & ELF_LINK_HASH_REF_REGULAR) != 0 |
| 1500 | && (h->elf_link_hash_flags |
| 1501 | & ELF_LINK_HASH_DEF_REGULAR) == 0))); |
| 1502 | |
| 1503 | /* If this is a function, put it in the procedure linkage table. We |
| 1504 | will fill in the contents of the procedure linkage table later |
| 1505 | (although we could actually do it here). The STT_NOTYPE |
| 1506 | condition is a hack specifically for the Oracle libraries |
| 1507 | delivered for Solaris; for some inexplicable reason, they define |
| 1508 | some of their functions as STT_NOTYPE when they really should be |
| 1509 | STT_FUNC. */ |
| 1510 | if (h->type == STT_FUNC |
| 1511 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0 |
| 1512 | || (h->type == STT_NOTYPE |
| 1513 | && (h->root.type == bfd_link_hash_defined |
| 1514 | || h->root.type == bfd_link_hash_defweak) |
| 1515 | && (h->root.u.def.section->flags & SEC_CODE) != 0)) |
| 1516 | { |
| 1517 | if (! elf_hash_table (info)->dynamic_sections_created) |
| 1518 | { |
| 1519 | /* This case can occur if we saw a WPLT30 reloc in an input |
| 1520 | file, but none of the input files were dynamic objects. |
| 1521 | In such a case, we don't actually need to build a |
| 1522 | procedure linkage table, and we can just do a WDISP30 |
| 1523 | reloc instead. */ |
| 1524 | BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0); |
| 1525 | return true; |
| 1526 | } |
| 1527 | |
| 1528 | s = bfd_get_section_by_name (dynobj, ".plt"); |
| 1529 | BFD_ASSERT (s != NULL); |
| 1530 | |
| 1531 | /* The first four bit in .plt is reserved. */ |
| 1532 | if (s->_raw_size == 0) |
| 1533 | s->_raw_size = PLT_HEADER_SIZE; |
| 1534 | |
| 1535 | /* If this symbol is not defined in a regular file, and we are |
| 1536 | not generating a shared library, then set the symbol to this |
| 1537 | location in the .plt. This is required to make function |
| 1538 | pointers compare as equal between the normal executable and |
| 1539 | the shared library. */ |
| 1540 | if (! info->shared |
| 1541 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) |
| 1542 | { |
| 1543 | h->root.u.def.section = s; |
| 1544 | h->root.u.def.value = s->_raw_size; |
| 1545 | } |
| 1546 | |
| 1547 | /* To simplify matters later, just store the plt index here. */ |
| 1548 | h->plt.offset = s->_raw_size / PLT_ENTRY_SIZE; |
| 1549 | |
| 1550 | /* Make room for this entry. */ |
| 1551 | s->_raw_size += PLT_ENTRY_SIZE; |
| 1552 | |
| 1553 | /* We also need to make an entry in the .rela.plt section. */ |
| 1554 | |
| 1555 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); |
| 1556 | BFD_ASSERT (s != NULL); |
| 1557 | |
| 1558 | /* The first plt entries are reserved, and the relocations must |
| 1559 | pair up exactly. */ |
| 1560 | if (s->_raw_size == 0) |
| 1561 | s->_raw_size += (PLT_HEADER_SIZE/PLT_ENTRY_SIZE |
| 1562 | * sizeof (Elf64_External_Rela)); |
| 1563 | |
| 1564 | s->_raw_size += sizeof (Elf64_External_Rela); |
| 1565 | |
| 1566 | /* The procedure linkage table size is bounded by the magnitude |
| 1567 | of the offset we can describe in the entry. */ |
| 1568 | if (s->_raw_size >= (bfd_vma)1 << 32) |
| 1569 | { |
| 1570 | bfd_set_error (bfd_error_bad_value); |
| 1571 | return false; |
| 1572 | } |
| 1573 | |
| 1574 | return true; |
| 1575 | } |
| 1576 | |
| 1577 | /* If this is a weak symbol, and there is a real definition, the |
| 1578 | processor independent code will have arranged for us to see the |
| 1579 | real definition first, and we can just use the same value. */ |
| 1580 | if (h->weakdef != NULL) |
| 1581 | { |
| 1582 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined |
| 1583 | || h->weakdef->root.type == bfd_link_hash_defweak); |
| 1584 | h->root.u.def.section = h->weakdef->root.u.def.section; |
| 1585 | h->root.u.def.value = h->weakdef->root.u.def.value; |
| 1586 | return true; |
| 1587 | } |
| 1588 | |
| 1589 | /* This is a reference to a symbol defined by a dynamic object which |
| 1590 | is not a function. */ |
| 1591 | |
| 1592 | /* If we are creating a shared library, we must presume that the |
| 1593 | only references to the symbol are via the global offset table. |
| 1594 | For such cases we need not do anything here; the relocations will |
| 1595 | be handled correctly by relocate_section. */ |
| 1596 | if (info->shared) |
| 1597 | return true; |
| 1598 | |
| 1599 | /* We must allocate the symbol in our .dynbss section, which will |
| 1600 | become part of the .bss section of the executable. There will be |
| 1601 | an entry for this symbol in the .dynsym section. The dynamic |
| 1602 | object will contain position independent code, so all references |
| 1603 | from the dynamic object to this symbol will go through the global |
| 1604 | offset table. The dynamic linker will use the .dynsym entry to |
| 1605 | determine the address it must put in the global offset table, so |
| 1606 | both the dynamic object and the regular object will refer to the |
| 1607 | same memory location for the variable. */ |
| 1608 | |
| 1609 | s = bfd_get_section_by_name (dynobj, ".dynbss"); |
| 1610 | BFD_ASSERT (s != NULL); |
| 1611 | |
| 1612 | /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker |
| 1613 | to copy the initial value out of the dynamic object and into the |
| 1614 | runtime process image. We need to remember the offset into the |
| 1615 | .rel.bss section we are going to use. */ |
| 1616 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
| 1617 | { |
| 1618 | asection *srel; |
| 1619 | |
| 1620 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); |
| 1621 | BFD_ASSERT (srel != NULL); |
| 1622 | srel->_raw_size += sizeof (Elf64_External_Rela); |
| 1623 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; |
| 1624 | } |
| 1625 | |
| 1626 | /* We need to figure out the alignment required for this symbol. I |
| 1627 | have no idea how ELF linkers handle this. 16-bytes is the size |
| 1628 | of the largest type that requires hard alignment -- long double. */ |
| 1629 | power_of_two = bfd_log2 (h->size); |
| 1630 | if (power_of_two > 4) |
| 1631 | power_of_two = 4; |
| 1632 | |
| 1633 | /* Apply the required alignment. */ |
| 1634 | s->_raw_size = BFD_ALIGN (s->_raw_size, |
| 1635 | (bfd_size_type) (1 << power_of_two)); |
| 1636 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) |
| 1637 | { |
| 1638 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) |
| 1639 | return false; |
| 1640 | } |
| 1641 | |
| 1642 | /* Define the symbol as being at this point in the section. */ |
| 1643 | h->root.u.def.section = s; |
| 1644 | h->root.u.def.value = s->_raw_size; |
| 1645 | |
| 1646 | /* Increment the section size to make room for the symbol. */ |
| 1647 | s->_raw_size += h->size; |
| 1648 | |
| 1649 | return true; |
| 1650 | } |
| 1651 | |
| 1652 | /* Set the sizes of the dynamic sections. */ |
| 1653 | |
| 1654 | static boolean |
| 1655 | sparc64_elf_size_dynamic_sections (output_bfd, info) |
| 1656 | bfd *output_bfd; |
| 1657 | struct bfd_link_info *info; |
| 1658 | { |
| 1659 | bfd *dynobj; |
| 1660 | asection *s; |
| 1661 | boolean reltext; |
| 1662 | boolean relplt; |
| 1663 | |
| 1664 | dynobj = elf_hash_table (info)->dynobj; |
| 1665 | BFD_ASSERT (dynobj != NULL); |
| 1666 | |
| 1667 | if (elf_hash_table (info)->dynamic_sections_created) |
| 1668 | { |
| 1669 | /* Set the contents of the .interp section to the interpreter. */ |
| 1670 | if (! info->shared) |
| 1671 | { |
| 1672 | s = bfd_get_section_by_name (dynobj, ".interp"); |
| 1673 | BFD_ASSERT (s != NULL); |
| 1674 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; |
| 1675 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
| 1676 | } |
| 1677 | } |
| 1678 | else |
| 1679 | { |
| 1680 | /* We may have created entries in the .rela.got section. |
| 1681 | However, if we are not creating the dynamic sections, we will |
| 1682 | not actually use these entries. Reset the size of .rela.got, |
| 1683 | which will cause it to get stripped from the output file |
| 1684 | below. */ |
| 1685 | s = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 1686 | if (s != NULL) |
| 1687 | s->_raw_size = 0; |
| 1688 | } |
| 1689 | |
| 1690 | /* The check_relocs and adjust_dynamic_symbol entry points have |
| 1691 | determined the sizes of the various dynamic sections. Allocate |
| 1692 | memory for them. */ |
| 1693 | reltext = false; |
| 1694 | relplt = false; |
| 1695 | for (s = dynobj->sections; s != NULL; s = s->next) |
| 1696 | { |
| 1697 | const char *name; |
| 1698 | boolean strip; |
| 1699 | |
| 1700 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
| 1701 | continue; |
| 1702 | |
| 1703 | /* It's OK to base decisions on the section name, because none |
| 1704 | of the dynobj section names depend upon the input files. */ |
| 1705 | name = bfd_get_section_name (dynobj, s); |
| 1706 | |
| 1707 | strip = false; |
| 1708 | |
| 1709 | if (strncmp (name, ".rela", 5) == 0) |
| 1710 | { |
| 1711 | if (s->_raw_size == 0) |
| 1712 | { |
| 1713 | /* If we don't need this section, strip it from the |
| 1714 | output file. This is to handle .rela.bss and |
| 1715 | .rel.plt. We must create it in |
| 1716 | create_dynamic_sections, because it must be created |
| 1717 | before the linker maps input sections to output |
| 1718 | sections. The linker does that before |
| 1719 | adjust_dynamic_symbol is called, and it is that |
| 1720 | function which decides whether anything needs to go |
| 1721 | into these sections. */ |
| 1722 | strip = true; |
| 1723 | } |
| 1724 | else |
| 1725 | { |
| 1726 | const char *outname; |
| 1727 | asection *target; |
| 1728 | |
| 1729 | /* If this relocation section applies to a read only |
| 1730 | section, then we probably need a DT_TEXTREL entry. */ |
| 1731 | outname = bfd_get_section_name (output_bfd, |
| 1732 | s->output_section); |
| 1733 | target = bfd_get_section_by_name (output_bfd, outname + 5); |
| 1734 | if (target != NULL |
| 1735 | && (target->flags & SEC_READONLY) != 0) |
| 1736 | reltext = true; |
| 1737 | |
| 1738 | if (strcmp (name, ".rela.plt") == 0) |
| 1739 | relplt = true; |
| 1740 | |
| 1741 | /* We use the reloc_count field as a counter if we need |
| 1742 | to copy relocs into the output file. */ |
| 1743 | s->reloc_count = 0; |
| 1744 | } |
| 1745 | } |
| 1746 | else if (strcmp (name, ".plt") != 0 |
| 1747 | && strncmp (name, ".got", 4) != 0) |
| 1748 | { |
| 1749 | /* It's not one of our sections, so don't allocate space. */ |
| 1750 | continue; |
| 1751 | } |
| 1752 | |
| 1753 | if (strip) |
| 1754 | { |
| 1755 | _bfd_strip_section_from_output (s); |
| 1756 | continue; |
| 1757 | } |
| 1758 | |
| 1759 | /* Allocate memory for the section contents. Zero the memory |
| 1760 | for the benefit of .rela.plt, which has 4 unused entries |
| 1761 | at the beginning, and we don't want garbage. */ |
| 1762 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); |
| 1763 | if (s->contents == NULL && s->_raw_size != 0) |
| 1764 | return false; |
| 1765 | } |
| 1766 | |
| 1767 | if (elf_hash_table (info)->dynamic_sections_created) |
| 1768 | { |
| 1769 | /* Add some entries to the .dynamic section. We fill in the |
| 1770 | values later, in sparc64_elf_finish_dynamic_sections, but we |
| 1771 | must add the entries now so that we get the correct size for |
| 1772 | the .dynamic section. The DT_DEBUG entry is filled in by the |
| 1773 | dynamic linker and used by the debugger. */ |
| 1774 | int reg; |
| 1775 | struct sparc64_elf_app_reg * app_regs; |
| 1776 | struct bfd_strtab_hash *dynstr; |
| 1777 | struct elf_link_hash_table *eht = elf_hash_table (info); |
| 1778 | |
| 1779 | if (! info->shared) |
| 1780 | { |
| 1781 | if (! bfd_elf64_add_dynamic_entry (info, DT_DEBUG, 0)) |
| 1782 | return false; |
| 1783 | } |
| 1784 | |
| 1785 | if (relplt) |
| 1786 | { |
| 1787 | if (! bfd_elf64_add_dynamic_entry (info, DT_PLTGOT, 0) |
| 1788 | || ! bfd_elf64_add_dynamic_entry (info, DT_PLTRELSZ, 0) |
| 1789 | || ! bfd_elf64_add_dynamic_entry (info, DT_PLTREL, DT_RELA) |
| 1790 | || ! bfd_elf64_add_dynamic_entry (info, DT_JMPREL, 0)) |
| 1791 | return false; |
| 1792 | } |
| 1793 | |
| 1794 | if (! bfd_elf64_add_dynamic_entry (info, DT_RELA, 0) |
| 1795 | || ! bfd_elf64_add_dynamic_entry (info, DT_RELASZ, 0) |
| 1796 | || ! bfd_elf64_add_dynamic_entry (info, DT_RELAENT, |
| 1797 | sizeof (Elf64_External_Rela))) |
| 1798 | return false; |
| 1799 | |
| 1800 | if (reltext) |
| 1801 | { |
| 1802 | if (! bfd_elf64_add_dynamic_entry (info, DT_TEXTREL, 0)) |
| 1803 | return false; |
| 1804 | } |
| 1805 | |
| 1806 | /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER |
| 1807 | entries if needed. */ |
| 1808 | app_regs = sparc64_elf_hash_table (info)->app_regs; |
| 1809 | dynstr = eht->dynstr; |
| 1810 | |
| 1811 | for (reg = 0; reg < 4; reg++) |
| 1812 | if (app_regs [reg].name != NULL) |
| 1813 | { |
| 1814 | struct elf_link_local_dynamic_entry *entry, *e; |
| 1815 | |
| 1816 | if (! bfd_elf64_add_dynamic_entry (info, DT_SPARC_REGISTER, 0)) |
| 1817 | return false; |
| 1818 | |
| 1819 | entry = (struct elf_link_local_dynamic_entry *) |
| 1820 | bfd_hash_allocate (&info->hash->table, sizeof (*entry)); |
| 1821 | if (entry == NULL) |
| 1822 | return false; |
| 1823 | |
| 1824 | /* We cheat here a little bit: the symbol will not be local, so we |
| 1825 | put it at the end of the dynlocal linked list. We will fix it |
| 1826 | later on, as we have to fix other fields anyway. */ |
| 1827 | entry->isym.st_value = reg < 2 ? reg + 2 : reg + 4; |
| 1828 | entry->isym.st_size = 0; |
| 1829 | if (*app_regs [reg].name != '\0') |
| 1830 | entry->isym.st_name |
| 1831 | = _bfd_stringtab_add (dynstr, app_regs[reg].name, true, false); |
| 1832 | else |
| 1833 | entry->isym.st_name = 0; |
| 1834 | entry->isym.st_other = 0; |
| 1835 | entry->isym.st_info = ELF_ST_INFO (app_regs [reg].bind, |
| 1836 | STT_REGISTER); |
| 1837 | entry->isym.st_shndx = app_regs [reg].shndx; |
| 1838 | entry->next = NULL; |
| 1839 | entry->input_bfd = output_bfd; |
| 1840 | entry->input_indx = -1; |
| 1841 | |
| 1842 | if (eht->dynlocal == NULL) |
| 1843 | eht->dynlocal = entry; |
| 1844 | else |
| 1845 | { |
| 1846 | for (e = eht->dynlocal; e->next; e = e->next) |
| 1847 | ; |
| 1848 | e->next = entry; |
| 1849 | } |
| 1850 | eht->dynsymcount++; |
| 1851 | } |
| 1852 | } |
| 1853 | |
| 1854 | return true; |
| 1855 | } |
| 1856 | \f |
| 1857 | /* Relocate a SPARC64 ELF section. */ |
| 1858 | |
| 1859 | static boolean |
| 1860 | sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, |
| 1861 | contents, relocs, local_syms, local_sections) |
| 1862 | bfd *output_bfd; |
| 1863 | struct bfd_link_info *info; |
| 1864 | bfd *input_bfd; |
| 1865 | asection *input_section; |
| 1866 | bfd_byte *contents; |
| 1867 | Elf_Internal_Rela *relocs; |
| 1868 | Elf_Internal_Sym *local_syms; |
| 1869 | asection **local_sections; |
| 1870 | { |
| 1871 | bfd *dynobj; |
| 1872 | Elf_Internal_Shdr *symtab_hdr; |
| 1873 | struct elf_link_hash_entry **sym_hashes; |
| 1874 | bfd_vma *local_got_offsets; |
| 1875 | bfd_vma got_base; |
| 1876 | asection *sgot; |
| 1877 | asection *splt; |
| 1878 | asection *sreloc; |
| 1879 | Elf_Internal_Rela *rel; |
| 1880 | Elf_Internal_Rela *relend; |
| 1881 | |
| 1882 | dynobj = elf_hash_table (info)->dynobj; |
| 1883 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| 1884 | sym_hashes = elf_sym_hashes (input_bfd); |
| 1885 | local_got_offsets = elf_local_got_offsets (input_bfd); |
| 1886 | |
| 1887 | if (elf_hash_table(info)->hgot == NULL) |
| 1888 | got_base = 0; |
| 1889 | else |
| 1890 | got_base = elf_hash_table (info)->hgot->root.u.def.value; |
| 1891 | |
| 1892 | sgot = splt = sreloc = NULL; |
| 1893 | |
| 1894 | rel = relocs; |
| 1895 | relend = relocs + input_section->reloc_count; |
| 1896 | for (; rel < relend; rel++) |
| 1897 | { |
| 1898 | int r_type; |
| 1899 | reloc_howto_type *howto; |
| 1900 | long r_symndx; |
| 1901 | struct elf_link_hash_entry *h; |
| 1902 | Elf_Internal_Sym *sym; |
| 1903 | asection *sec; |
| 1904 | bfd_vma relocation; |
| 1905 | bfd_reloc_status_type r; |
| 1906 | |
| 1907 | r_type = ELF64_R_TYPE_ID (rel->r_info); |
| 1908 | if (r_type < 0 || r_type >= (int) R_SPARC_max_std) |
| 1909 | { |
| 1910 | bfd_set_error (bfd_error_bad_value); |
| 1911 | return false; |
| 1912 | } |
| 1913 | howto = sparc64_elf_howto_table + r_type; |
| 1914 | |
| 1915 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 1916 | |
| 1917 | if (info->relocateable) |
| 1918 | { |
| 1919 | /* This is a relocateable link. We don't have to change |
| 1920 | anything, unless the reloc is against a section symbol, |
| 1921 | in which case we have to adjust according to where the |
| 1922 | section symbol winds up in the output section. */ |
| 1923 | if (r_symndx < symtab_hdr->sh_info) |
| 1924 | { |
| 1925 | sym = local_syms + r_symndx; |
| 1926 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) |
| 1927 | { |
| 1928 | sec = local_sections[r_symndx]; |
| 1929 | rel->r_addend += sec->output_offset + sym->st_value; |
| 1930 | } |
| 1931 | } |
| 1932 | |
| 1933 | continue; |
| 1934 | } |
| 1935 | |
| 1936 | /* This is a final link. */ |
| 1937 | h = NULL; |
| 1938 | sym = NULL; |
| 1939 | sec = NULL; |
| 1940 | if (r_symndx < symtab_hdr->sh_info) |
| 1941 | { |
| 1942 | sym = local_syms + r_symndx; |
| 1943 | sec = local_sections[r_symndx]; |
| 1944 | relocation = (sec->output_section->vma |
| 1945 | + sec->output_offset |
| 1946 | + sym->st_value); |
| 1947 | } |
| 1948 | else |
| 1949 | { |
| 1950 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 1951 | while (h->root.type == bfd_link_hash_indirect |
| 1952 | || h->root.type == bfd_link_hash_warning) |
| 1953 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 1954 | if (h->root.type == bfd_link_hash_defined |
| 1955 | || h->root.type == bfd_link_hash_defweak) |
| 1956 | { |
| 1957 | boolean skip_it = false; |
| 1958 | sec = h->root.u.def.section; |
| 1959 | |
| 1960 | switch (r_type) |
| 1961 | { |
| 1962 | case R_SPARC_WPLT30: |
| 1963 | case R_SPARC_PLT32: |
| 1964 | case R_SPARC_HIPLT22: |
| 1965 | case R_SPARC_LOPLT10: |
| 1966 | case R_SPARC_PCPLT32: |
| 1967 | case R_SPARC_PCPLT22: |
| 1968 | case R_SPARC_PCPLT10: |
| 1969 | case R_SPARC_PLT64: |
| 1970 | if (h->plt.offset != (bfd_vma) -1) |
| 1971 | skip_it = true; |
| 1972 | break; |
| 1973 | |
| 1974 | case R_SPARC_GOT10: |
| 1975 | case R_SPARC_GOT13: |
| 1976 | case R_SPARC_GOT22: |
| 1977 | if (elf_hash_table(info)->dynamic_sections_created |
| 1978 | && (!info->shared |
| 1979 | || (!info->symbolic && h->dynindx != -1) |
| 1980 | || !(h->elf_link_hash_flags |
| 1981 | & ELF_LINK_HASH_DEF_REGULAR))) |
| 1982 | skip_it = true; |
| 1983 | break; |
| 1984 | |
| 1985 | case R_SPARC_PC10: |
| 1986 | case R_SPARC_PC22: |
| 1987 | case R_SPARC_PC_HH22: |
| 1988 | case R_SPARC_PC_HM10: |
| 1989 | case R_SPARC_PC_LM22: |
| 1990 | if (!strcmp(h->root.root.string, "_GLOBAL_OFFSET_TABLE_")) |
| 1991 | break; |
| 1992 | /* FALLTHRU */ |
| 1993 | |
| 1994 | case R_SPARC_8: |
| 1995 | case R_SPARC_16: |
| 1996 | case R_SPARC_32: |
| 1997 | case R_SPARC_DISP8: |
| 1998 | case R_SPARC_DISP16: |
| 1999 | case R_SPARC_DISP32: |
| 2000 | case R_SPARC_WDISP30: |
| 2001 | case R_SPARC_WDISP22: |
| 2002 | case R_SPARC_HI22: |
| 2003 | case R_SPARC_22: |
| 2004 | case R_SPARC_13: |
| 2005 | case R_SPARC_LO10: |
| 2006 | case R_SPARC_UA32: |
| 2007 | case R_SPARC_10: |
| 2008 | case R_SPARC_11: |
| 2009 | case R_SPARC_64: |
| 2010 | case R_SPARC_OLO10: |
| 2011 | case R_SPARC_HH22: |
| 2012 | case R_SPARC_HM10: |
| 2013 | case R_SPARC_LM22: |
| 2014 | case R_SPARC_WDISP19: |
| 2015 | case R_SPARC_WDISP16: |
| 2016 | case R_SPARC_7: |
| 2017 | case R_SPARC_5: |
| 2018 | case R_SPARC_6: |
| 2019 | case R_SPARC_DISP64: |
| 2020 | case R_SPARC_HIX22: |
| 2021 | case R_SPARC_LOX10: |
| 2022 | case R_SPARC_H44: |
| 2023 | case R_SPARC_M44: |
| 2024 | case R_SPARC_L44: |
| 2025 | case R_SPARC_UA64: |
| 2026 | case R_SPARC_UA16: |
| 2027 | if (info->shared |
| 2028 | && ((!info->symbolic && h->dynindx != -1) |
| 2029 | || !(h->elf_link_hash_flags |
| 2030 | & ELF_LINK_HASH_DEF_REGULAR))) |
| 2031 | skip_it = true; |
| 2032 | break; |
| 2033 | } |
| 2034 | |
| 2035 | if (skip_it) |
| 2036 | { |
| 2037 | /* In these cases, we don't need the relocation |
| 2038 | value. We check specially because in some |
| 2039 | obscure cases sec->output_section will be NULL. */ |
| 2040 | relocation = 0; |
| 2041 | } |
| 2042 | else |
| 2043 | { |
| 2044 | relocation = (h->root.u.def.value |
| 2045 | + sec->output_section->vma |
| 2046 | + sec->output_offset); |
| 2047 | } |
| 2048 | } |
| 2049 | else if (h->root.type == bfd_link_hash_undefweak) |
| 2050 | relocation = 0; |
| 2051 | else if (info->shared && !info->symbolic && !info->no_undefined) |
| 2052 | relocation = 0; |
| 2053 | else |
| 2054 | { |
| 2055 | if (! ((*info->callbacks->undefined_symbol) |
| 2056 | (info, h->root.root.string, input_bfd, |
| 2057 | input_section, rel->r_offset))) |
| 2058 | return false; |
| 2059 | relocation = 0; |
| 2060 | } |
| 2061 | } |
| 2062 | |
| 2063 | /* When generating a shared object, these relocations are copied |
| 2064 | into the output file to be resolved at run time. */ |
| 2065 | if (info->shared && (input_section->flags & SEC_ALLOC)) |
| 2066 | { |
| 2067 | switch (r_type) |
| 2068 | { |
| 2069 | case R_SPARC_PC10: |
| 2070 | case R_SPARC_PC22: |
| 2071 | case R_SPARC_PC_HH22: |
| 2072 | case R_SPARC_PC_HM10: |
| 2073 | case R_SPARC_PC_LM22: |
| 2074 | if (h != NULL |
| 2075 | && !strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_")) |
| 2076 | break; |
| 2077 | /* Fall through. */ |
| 2078 | case R_SPARC_DISP8: |
| 2079 | case R_SPARC_DISP16: |
| 2080 | case R_SPARC_DISP32: |
| 2081 | case R_SPARC_WDISP30: |
| 2082 | case R_SPARC_WDISP22: |
| 2083 | case R_SPARC_WDISP19: |
| 2084 | case R_SPARC_WDISP16: |
| 2085 | case R_SPARC_DISP64: |
| 2086 | if (h == NULL) |
| 2087 | break; |
| 2088 | /* Fall through. */ |
| 2089 | case R_SPARC_8: |
| 2090 | case R_SPARC_16: |
| 2091 | case R_SPARC_32: |
| 2092 | case R_SPARC_HI22: |
| 2093 | case R_SPARC_22: |
| 2094 | case R_SPARC_13: |
| 2095 | case R_SPARC_LO10: |
| 2096 | case R_SPARC_UA32: |
| 2097 | case R_SPARC_10: |
| 2098 | case R_SPARC_11: |
| 2099 | case R_SPARC_64: |
| 2100 | case R_SPARC_OLO10: |
| 2101 | case R_SPARC_HH22: |
| 2102 | case R_SPARC_HM10: |
| 2103 | case R_SPARC_LM22: |
| 2104 | case R_SPARC_7: |
| 2105 | case R_SPARC_5: |
| 2106 | case R_SPARC_6: |
| 2107 | case R_SPARC_HIX22: |
| 2108 | case R_SPARC_LOX10: |
| 2109 | case R_SPARC_H44: |
| 2110 | case R_SPARC_M44: |
| 2111 | case R_SPARC_L44: |
| 2112 | case R_SPARC_UA64: |
| 2113 | case R_SPARC_UA16: |
| 2114 | { |
| 2115 | Elf_Internal_Rela outrel; |
| 2116 | boolean skip; |
| 2117 | |
| 2118 | if (sreloc == NULL) |
| 2119 | { |
| 2120 | const char *name = |
| 2121 | (bfd_elf_string_from_elf_section |
| 2122 | (input_bfd, |
| 2123 | elf_elfheader (input_bfd)->e_shstrndx, |
| 2124 | elf_section_data (input_section)->rel_hdr.sh_name)); |
| 2125 | |
| 2126 | if (name == NULL) |
| 2127 | return false; |
| 2128 | |
| 2129 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 |
| 2130 | && strcmp (bfd_get_section_name(input_bfd, |
| 2131 | input_section), |
| 2132 | name + 5) == 0); |
| 2133 | |
| 2134 | sreloc = bfd_get_section_by_name (dynobj, name); |
| 2135 | BFD_ASSERT (sreloc != NULL); |
| 2136 | } |
| 2137 | |
| 2138 | skip = false; |
| 2139 | |
| 2140 | if (elf_section_data (input_section)->stab_info == NULL) |
| 2141 | outrel.r_offset = rel->r_offset; |
| 2142 | else |
| 2143 | { |
| 2144 | bfd_vma off; |
| 2145 | |
| 2146 | off = (_bfd_stab_section_offset |
| 2147 | (output_bfd, &elf_hash_table (info)->stab_info, |
| 2148 | input_section, |
| 2149 | &elf_section_data (input_section)->stab_info, |
| 2150 | rel->r_offset)); |
| 2151 | if (off == MINUS_ONE) |
| 2152 | skip = true; |
| 2153 | outrel.r_offset = off; |
| 2154 | } |
| 2155 | |
| 2156 | outrel.r_offset += (input_section->output_section->vma |
| 2157 | + input_section->output_offset); |
| 2158 | |
| 2159 | /* Optimize unaligned reloc usage now that we know where |
| 2160 | it finally resides. */ |
| 2161 | switch (r_type) |
| 2162 | { |
| 2163 | case R_SPARC_16: |
| 2164 | if (outrel.r_offset & 1) r_type = R_SPARC_UA16; |
| 2165 | break; |
| 2166 | case R_SPARC_UA16: |
| 2167 | if (!(outrel.r_offset & 1)) r_type = R_SPARC_16; |
| 2168 | break; |
| 2169 | case R_SPARC_32: |
| 2170 | if (outrel.r_offset & 3) r_type = R_SPARC_UA32; |
| 2171 | break; |
| 2172 | case R_SPARC_UA32: |
| 2173 | if (!(outrel.r_offset & 3)) r_type = R_SPARC_32; |
| 2174 | break; |
| 2175 | case R_SPARC_64: |
| 2176 | if (outrel.r_offset & 7) r_type = R_SPARC_UA64; |
| 2177 | break; |
| 2178 | case R_SPARC_UA64: |
| 2179 | if (!(outrel.r_offset & 7)) r_type = R_SPARC_64; |
| 2180 | break; |
| 2181 | } |
| 2182 | |
| 2183 | if (skip) |
| 2184 | memset (&outrel, 0, sizeof outrel); |
| 2185 | /* h->dynindx may be -1 if the symbol was marked to |
| 2186 | become local. */ |
| 2187 | else if (h != NULL |
| 2188 | && ((! info->symbolic && h->dynindx != -1) |
| 2189 | || (h->elf_link_hash_flags |
| 2190 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) |
| 2191 | { |
| 2192 | BFD_ASSERT (h->dynindx != -1); |
| 2193 | outrel.r_info |
| 2194 | = ELF64_R_INFO (h->dynindx, |
| 2195 | ELF64_R_TYPE_INFO ( |
| 2196 | ELF64_R_TYPE_DATA (rel->r_info), |
| 2197 | r_type)); |
| 2198 | outrel.r_addend = rel->r_addend; |
| 2199 | } |
| 2200 | else |
| 2201 | { |
| 2202 | if (r_type == R_SPARC_64) |
| 2203 | { |
| 2204 | outrel.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE); |
| 2205 | outrel.r_addend = relocation + rel->r_addend; |
| 2206 | } |
| 2207 | else |
| 2208 | { |
| 2209 | long indx; |
| 2210 | |
| 2211 | if (h == NULL) |
| 2212 | sec = local_sections[r_symndx]; |
| 2213 | else |
| 2214 | { |
| 2215 | BFD_ASSERT (h->root.type == bfd_link_hash_defined |
| 2216 | || (h->root.type |
| 2217 | == bfd_link_hash_defweak)); |
| 2218 | sec = h->root.u.def.section; |
| 2219 | } |
| 2220 | if (sec != NULL && bfd_is_abs_section (sec)) |
| 2221 | indx = 0; |
| 2222 | else if (sec == NULL || sec->owner == NULL) |
| 2223 | { |
| 2224 | bfd_set_error (bfd_error_bad_value); |
| 2225 | return false; |
| 2226 | } |
| 2227 | else |
| 2228 | { |
| 2229 | asection *osec; |
| 2230 | |
| 2231 | osec = sec->output_section; |
| 2232 | indx = elf_section_data (osec)->dynindx; |
| 2233 | |
| 2234 | /* FIXME: we really should be able to link non-pic |
| 2235 | shared libraries. */ |
| 2236 | if (indx == 0) |
| 2237 | { |
| 2238 | BFD_FAIL (); |
| 2239 | (*_bfd_error_handler) |
| 2240 | (_("%s: probably compiled without -fPIC?"), |
| 2241 | bfd_get_filename (input_bfd)); |
| 2242 | bfd_set_error (bfd_error_bad_value); |
| 2243 | return false; |
| 2244 | } |
| 2245 | } |
| 2246 | |
| 2247 | outrel.r_info |
| 2248 | = ELF64_R_INFO (indx, |
| 2249 | ELF64_R_TYPE_INFO ( |
| 2250 | ELF64_R_TYPE_DATA (rel->r_info), |
| 2251 | r_type)); |
| 2252 | outrel.r_addend = relocation + rel->r_addend; |
| 2253 | } |
| 2254 | } |
| 2255 | |
| 2256 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, |
| 2257 | (((Elf64_External_Rela *) |
| 2258 | sreloc->contents) |
| 2259 | + sreloc->reloc_count)); |
| 2260 | ++sreloc->reloc_count; |
| 2261 | |
| 2262 | /* This reloc will be computed at runtime, so there's no |
| 2263 | need to do anything now, unless this is a RELATIVE |
| 2264 | reloc in an unallocated section. */ |
| 2265 | if (skip |
| 2266 | || (input_section->flags & SEC_ALLOC) != 0 |
| 2267 | || ELF64_R_TYPE_ID (outrel.r_info) != R_SPARC_RELATIVE) |
| 2268 | continue; |
| 2269 | } |
| 2270 | break; |
| 2271 | } |
| 2272 | } |
| 2273 | |
| 2274 | switch (r_type) |
| 2275 | { |
| 2276 | case R_SPARC_GOT10: |
| 2277 | case R_SPARC_GOT13: |
| 2278 | case R_SPARC_GOT22: |
| 2279 | /* Relocation is to the entry for this symbol in the global |
| 2280 | offset table. */ |
| 2281 | if (sgot == NULL) |
| 2282 | { |
| 2283 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 2284 | BFD_ASSERT (sgot != NULL); |
| 2285 | } |
| 2286 | |
| 2287 | if (h != NULL) |
| 2288 | { |
| 2289 | bfd_vma off = h->got.offset; |
| 2290 | BFD_ASSERT (off != (bfd_vma) -1); |
| 2291 | |
| 2292 | if (! elf_hash_table (info)->dynamic_sections_created |
| 2293 | || (info->shared |
| 2294 | && (info->symbolic || h->dynindx == -1) |
| 2295 | && (h->elf_link_hash_flags |
| 2296 | & ELF_LINK_HASH_DEF_REGULAR))) |
| 2297 | { |
| 2298 | /* This is actually a static link, or it is a -Bsymbolic |
| 2299 | link and the symbol is defined locally, or the symbol |
| 2300 | was forced to be local because of a version file. We |
| 2301 | must initialize this entry in the global offset table. |
| 2302 | Since the offset must always be a multiple of 8, we |
| 2303 | use the least significant bit to record whether we |
| 2304 | have initialized it already. |
| 2305 | |
| 2306 | When doing a dynamic link, we create a .rela.got |
| 2307 | relocation entry to initialize the value. This is |
| 2308 | done in the finish_dynamic_symbol routine. */ |
| 2309 | |
| 2310 | if ((off & 1) != 0) |
| 2311 | off &= ~1; |
| 2312 | else |
| 2313 | { |
| 2314 | bfd_put_64 (output_bfd, relocation, |
| 2315 | sgot->contents + off); |
| 2316 | h->got.offset |= 1; |
| 2317 | } |
| 2318 | } |
| 2319 | relocation = sgot->output_offset + off - got_base; |
| 2320 | } |
| 2321 | else |
| 2322 | { |
| 2323 | bfd_vma off; |
| 2324 | |
| 2325 | BFD_ASSERT (local_got_offsets != NULL); |
| 2326 | off = local_got_offsets[r_symndx]; |
| 2327 | BFD_ASSERT (off != (bfd_vma) -1); |
| 2328 | |
| 2329 | /* The offset must always be a multiple of 8. We use |
| 2330 | the least significant bit to record whether we have |
| 2331 | already processed this entry. */ |
| 2332 | if ((off & 1) != 0) |
| 2333 | off &= ~1; |
| 2334 | else |
| 2335 | { |
| 2336 | bfd_put_64 (output_bfd, relocation, sgot->contents + off); |
| 2337 | local_got_offsets[r_symndx] |= 1; |
| 2338 | |
| 2339 | if (info->shared) |
| 2340 | { |
| 2341 | asection *srelgot; |
| 2342 | Elf_Internal_Rela outrel; |
| 2343 | |
| 2344 | /* We need to generate a R_SPARC_RELATIVE reloc |
| 2345 | for the dynamic linker. */ |
| 2346 | srelgot = bfd_get_section_by_name(dynobj, ".rela.got"); |
| 2347 | BFD_ASSERT (srelgot != NULL); |
| 2348 | |
| 2349 | outrel.r_offset = (sgot->output_section->vma |
| 2350 | + sgot->output_offset |
| 2351 | + off); |
| 2352 | outrel.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE); |
| 2353 | outrel.r_addend = relocation; |
| 2354 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, |
| 2355 | (((Elf64_External_Rela *) |
| 2356 | srelgot->contents) |
| 2357 | + srelgot->reloc_count)); |
| 2358 | ++srelgot->reloc_count; |
| 2359 | } |
| 2360 | } |
| 2361 | relocation = sgot->output_offset + off - got_base; |
| 2362 | } |
| 2363 | goto do_default; |
| 2364 | |
| 2365 | case R_SPARC_WPLT30: |
| 2366 | case R_SPARC_PLT32: |
| 2367 | case R_SPARC_HIPLT22: |
| 2368 | case R_SPARC_LOPLT10: |
| 2369 | case R_SPARC_PCPLT32: |
| 2370 | case R_SPARC_PCPLT22: |
| 2371 | case R_SPARC_PCPLT10: |
| 2372 | case R_SPARC_PLT64: |
| 2373 | /* Relocation is to the entry for this symbol in the |
| 2374 | procedure linkage table. */ |
| 2375 | BFD_ASSERT (h != NULL); |
| 2376 | |
| 2377 | if (h->plt.offset == (bfd_vma) -1) |
| 2378 | { |
| 2379 | /* We didn't make a PLT entry for this symbol. This |
| 2380 | happens when statically linking PIC code, or when |
| 2381 | using -Bsymbolic. */ |
| 2382 | goto do_default; |
| 2383 | } |
| 2384 | |
| 2385 | if (splt == NULL) |
| 2386 | { |
| 2387 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 2388 | BFD_ASSERT (splt != NULL); |
| 2389 | } |
| 2390 | |
| 2391 | relocation = (splt->output_section->vma |
| 2392 | + splt->output_offset |
| 2393 | + sparc64_elf_plt_entry_offset (h->plt.offset)); |
| 2394 | goto do_default; |
| 2395 | |
| 2396 | case R_SPARC_OLO10: |
| 2397 | { |
| 2398 | bfd_vma x; |
| 2399 | |
| 2400 | relocation += rel->r_addend; |
| 2401 | relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info); |
| 2402 | |
| 2403 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 2404 | x = (x & ~0x1fff) | (relocation & 0x1fff); |
| 2405 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); |
| 2406 | |
| 2407 | r = bfd_check_overflow (howto->complain_on_overflow, |
| 2408 | howto->bitsize, howto->rightshift, |
| 2409 | bfd_arch_bits_per_address (input_bfd), |
| 2410 | relocation); |
| 2411 | } |
| 2412 | break; |
| 2413 | |
| 2414 | case R_SPARC_WDISP16: |
| 2415 | { |
| 2416 | bfd_vma x; |
| 2417 | |
| 2418 | relocation += rel->r_addend; |
| 2419 | /* Adjust for pc-relative-ness. */ |
| 2420 | relocation -= (input_section->output_section->vma |
| 2421 | + input_section->output_offset); |
| 2422 | relocation -= rel->r_offset; |
| 2423 | |
| 2424 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 2425 | x = (x & ~0x303fff) | ((((relocation >> 2) & 0xc000) << 6) |
| 2426 | | ((relocation >> 2) & 0x3fff)); |
| 2427 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); |
| 2428 | |
| 2429 | r = bfd_check_overflow (howto->complain_on_overflow, |
| 2430 | howto->bitsize, howto->rightshift, |
| 2431 | bfd_arch_bits_per_address (input_bfd), |
| 2432 | relocation); |
| 2433 | } |
| 2434 | break; |
| 2435 | |
| 2436 | case R_SPARC_HIX22: |
| 2437 | { |
| 2438 | bfd_vma x; |
| 2439 | |
| 2440 | relocation += rel->r_addend; |
| 2441 | relocation = relocation ^ MINUS_ONE; |
| 2442 | |
| 2443 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 2444 | x = (x & ~0x3fffff) | ((relocation >> 10) & 0x3fffff); |
| 2445 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); |
| 2446 | |
| 2447 | r = bfd_check_overflow (howto->complain_on_overflow, |
| 2448 | howto->bitsize, howto->rightshift, |
| 2449 | bfd_arch_bits_per_address (input_bfd), |
| 2450 | relocation); |
| 2451 | } |
| 2452 | break; |
| 2453 | |
| 2454 | case R_SPARC_LOX10: |
| 2455 | { |
| 2456 | bfd_vma x; |
| 2457 | |
| 2458 | relocation += rel->r_addend; |
| 2459 | relocation = (relocation & 0x3ff) | 0x1c00; |
| 2460 | |
| 2461 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 2462 | x = (x & ~0x1fff) | relocation; |
| 2463 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); |
| 2464 | |
| 2465 | r = bfd_reloc_ok; |
| 2466 | } |
| 2467 | break; |
| 2468 | |
| 2469 | default: |
| 2470 | do_default: |
| 2471 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 2472 | contents, rel->r_offset, |
| 2473 | relocation, rel->r_addend); |
| 2474 | break; |
| 2475 | } |
| 2476 | |
| 2477 | switch (r) |
| 2478 | { |
| 2479 | case bfd_reloc_ok: |
| 2480 | break; |
| 2481 | |
| 2482 | default: |
| 2483 | case bfd_reloc_outofrange: |
| 2484 | abort (); |
| 2485 | |
| 2486 | case bfd_reloc_overflow: |
| 2487 | { |
| 2488 | const char *name; |
| 2489 | |
| 2490 | if (h != NULL) |
| 2491 | { |
| 2492 | if (h->root.type == bfd_link_hash_undefweak |
| 2493 | && howto->pc_relative) |
| 2494 | { |
| 2495 | /* Assume this is a call protected by other code that |
| 2496 | detect the symbol is undefined. If this is the case, |
| 2497 | we can safely ignore the overflow. If not, the |
| 2498 | program is hosed anyway, and a little warning isn't |
| 2499 | going to help. */ |
| 2500 | break; |
| 2501 | } |
| 2502 | |
| 2503 | name = h->root.root.string; |
| 2504 | } |
| 2505 | else |
| 2506 | { |
| 2507 | name = (bfd_elf_string_from_elf_section |
| 2508 | (input_bfd, |
| 2509 | symtab_hdr->sh_link, |
| 2510 | sym->st_name)); |
| 2511 | if (name == NULL) |
| 2512 | return false; |
| 2513 | if (*name == '\0') |
| 2514 | name = bfd_section_name (input_bfd, sec); |
| 2515 | } |
| 2516 | if (! ((*info->callbacks->reloc_overflow) |
| 2517 | (info, name, howto->name, (bfd_vma) 0, |
| 2518 | input_bfd, input_section, rel->r_offset))) |
| 2519 | return false; |
| 2520 | } |
| 2521 | break; |
| 2522 | } |
| 2523 | } |
| 2524 | |
| 2525 | return true; |
| 2526 | } |
| 2527 | |
| 2528 | /* Finish up dynamic symbol handling. We set the contents of various |
| 2529 | dynamic sections here. */ |
| 2530 | |
| 2531 | static boolean |
| 2532 | sparc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym) |
| 2533 | bfd *output_bfd; |
| 2534 | struct bfd_link_info *info; |
| 2535 | struct elf_link_hash_entry *h; |
| 2536 | Elf_Internal_Sym *sym; |
| 2537 | { |
| 2538 | bfd *dynobj; |
| 2539 | |
| 2540 | dynobj = elf_hash_table (info)->dynobj; |
| 2541 | |
| 2542 | if (h->plt.offset != (bfd_vma) -1) |
| 2543 | { |
| 2544 | asection *splt; |
| 2545 | asection *srela; |
| 2546 | Elf_Internal_Rela rela; |
| 2547 | |
| 2548 | /* This symbol has an entry in the PLT. Set it up. */ |
| 2549 | |
| 2550 | BFD_ASSERT (h->dynindx != -1); |
| 2551 | |
| 2552 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 2553 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); |
| 2554 | BFD_ASSERT (splt != NULL && srela != NULL); |
| 2555 | |
| 2556 | /* Fill in the entry in the .rela.plt section. */ |
| 2557 | |
| 2558 | if (h->plt.offset < LARGE_PLT_THRESHOLD) |
| 2559 | { |
| 2560 | rela.r_offset = sparc64_elf_plt_entry_offset (h->plt.offset); |
| 2561 | rela.r_addend = 0; |
| 2562 | } |
| 2563 | else |
| 2564 | { |
| 2565 | int max = splt->_raw_size / PLT_ENTRY_SIZE; |
| 2566 | rela.r_offset = sparc64_elf_plt_ptr_offset (h->plt.offset, max); |
| 2567 | rela.r_addend = -(sparc64_elf_plt_entry_offset (h->plt.offset) + 4) |
| 2568 | -(splt->output_section->vma + splt->output_offset); |
| 2569 | } |
| 2570 | rela.r_offset += (splt->output_section->vma + splt->output_offset); |
| 2571 | rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_JMP_SLOT); |
| 2572 | |
| 2573 | bfd_elf64_swap_reloca_out (output_bfd, &rela, |
| 2574 | ((Elf64_External_Rela *) srela->contents |
| 2575 | + h->plt.offset)); |
| 2576 | |
| 2577 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) |
| 2578 | { |
| 2579 | /* Mark the symbol as undefined, rather than as defined in |
| 2580 | the .plt section. Leave the value alone. */ |
| 2581 | sym->st_shndx = SHN_UNDEF; |
| 2582 | } |
| 2583 | } |
| 2584 | |
| 2585 | if (h->got.offset != (bfd_vma) -1) |
| 2586 | { |
| 2587 | asection *sgot; |
| 2588 | asection *srela; |
| 2589 | Elf_Internal_Rela rela; |
| 2590 | |
| 2591 | /* This symbol has an entry in the GOT. Set it up. */ |
| 2592 | |
| 2593 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 2594 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 2595 | BFD_ASSERT (sgot != NULL && srela != NULL); |
| 2596 | |
| 2597 | rela.r_offset = (sgot->output_section->vma |
| 2598 | + sgot->output_offset |
| 2599 | + (h->got.offset &~ 1)); |
| 2600 | |
| 2601 | /* If this is a -Bsymbolic link, and the symbol is defined |
| 2602 | locally, we just want to emit a RELATIVE reloc. Likewise if |
| 2603 | the symbol was forced to be local because of a version file. |
| 2604 | The entry in the global offset table will already have been |
| 2605 | initialized in the relocate_section function. */ |
| 2606 | if (info->shared |
| 2607 | && (info->symbolic || h->dynindx == -1) |
| 2608 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) |
| 2609 | { |
| 2610 | asection *sec = h->root.u.def.section; |
| 2611 | rela.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE); |
| 2612 | rela.r_addend = (h->root.u.def.value |
| 2613 | + sec->output_section->vma |
| 2614 | + sec->output_offset); |
| 2615 | } |
| 2616 | else |
| 2617 | { |
| 2618 | bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); |
| 2619 | rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_GLOB_DAT); |
| 2620 | rela.r_addend = 0; |
| 2621 | } |
| 2622 | |
| 2623 | bfd_elf64_swap_reloca_out (output_bfd, &rela, |
| 2624 | ((Elf64_External_Rela *) srela->contents |
| 2625 | + srela->reloc_count)); |
| 2626 | ++srela->reloc_count; |
| 2627 | } |
| 2628 | |
| 2629 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) |
| 2630 | { |
| 2631 | asection *s; |
| 2632 | Elf_Internal_Rela rela; |
| 2633 | |
| 2634 | /* This symbols needs a copy reloc. Set it up. */ |
| 2635 | |
| 2636 | BFD_ASSERT (h->dynindx != -1); |
| 2637 | |
| 2638 | s = bfd_get_section_by_name (h->root.u.def.section->owner, |
| 2639 | ".rela.bss"); |
| 2640 | BFD_ASSERT (s != NULL); |
| 2641 | |
| 2642 | rela.r_offset = (h->root.u.def.value |
| 2643 | + h->root.u.def.section->output_section->vma |
| 2644 | + h->root.u.def.section->output_offset); |
| 2645 | rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_COPY); |
| 2646 | rela.r_addend = 0; |
| 2647 | bfd_elf64_swap_reloca_out (output_bfd, &rela, |
| 2648 | ((Elf64_External_Rela *) s->contents |
| 2649 | + s->reloc_count)); |
| 2650 | ++s->reloc_count; |
| 2651 | } |
| 2652 | |
| 2653 | /* Mark some specially defined symbols as absolute. */ |
| 2654 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
| 2655 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 |
| 2656 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) |
| 2657 | sym->st_shndx = SHN_ABS; |
| 2658 | |
| 2659 | return true; |
| 2660 | } |
| 2661 | |
| 2662 | /* Finish up the dynamic sections. */ |
| 2663 | |
| 2664 | static boolean |
| 2665 | sparc64_elf_finish_dynamic_sections (output_bfd, info) |
| 2666 | bfd *output_bfd; |
| 2667 | struct bfd_link_info *info; |
| 2668 | { |
| 2669 | bfd *dynobj; |
| 2670 | int stt_regidx = -1; |
| 2671 | asection *sdyn; |
| 2672 | asection *sgot; |
| 2673 | |
| 2674 | dynobj = elf_hash_table (info)->dynobj; |
| 2675 | |
| 2676 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
| 2677 | |
| 2678 | if (elf_hash_table (info)->dynamic_sections_created) |
| 2679 | { |
| 2680 | asection *splt; |
| 2681 | Elf64_External_Dyn *dyncon, *dynconend; |
| 2682 | |
| 2683 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 2684 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
| 2685 | |
| 2686 | dyncon = (Elf64_External_Dyn *) sdyn->contents; |
| 2687 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size); |
| 2688 | for (; dyncon < dynconend; dyncon++) |
| 2689 | { |
| 2690 | Elf_Internal_Dyn dyn; |
| 2691 | const char *name; |
| 2692 | boolean size; |
| 2693 | |
| 2694 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); |
| 2695 | |
| 2696 | switch (dyn.d_tag) |
| 2697 | { |
| 2698 | case DT_PLTGOT: name = ".plt"; size = false; break; |
| 2699 | case DT_PLTRELSZ: name = ".rela.plt"; size = true; break; |
| 2700 | case DT_JMPREL: name = ".rela.plt"; size = false; break; |
| 2701 | case DT_SPARC_REGISTER: |
| 2702 | if (stt_regidx == -1) |
| 2703 | { |
| 2704 | stt_regidx = |
| 2705 | _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1); |
| 2706 | if (stt_regidx == -1) |
| 2707 | return false; |
| 2708 | } |
| 2709 | dyn.d_un.d_val = stt_regidx++; |
| 2710 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 2711 | /* fallthrough */ |
| 2712 | default: name = NULL; size = false; break; |
| 2713 | } |
| 2714 | |
| 2715 | if (name != NULL) |
| 2716 | { |
| 2717 | asection *s; |
| 2718 | |
| 2719 | s = bfd_get_section_by_name (output_bfd, name); |
| 2720 | if (s == NULL) |
| 2721 | dyn.d_un.d_val = 0; |
| 2722 | else |
| 2723 | { |
| 2724 | if (! size) |
| 2725 | dyn.d_un.d_ptr = s->vma; |
| 2726 | else |
| 2727 | { |
| 2728 | if (s->_cooked_size != 0) |
| 2729 | dyn.d_un.d_val = s->_cooked_size; |
| 2730 | else |
| 2731 | dyn.d_un.d_val = s->_raw_size; |
| 2732 | } |
| 2733 | } |
| 2734 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 2735 | } |
| 2736 | } |
| 2737 | |
| 2738 | /* Initialize the contents of the .plt section. */ |
| 2739 | if (splt->_raw_size > 0) |
| 2740 | { |
| 2741 | sparc64_elf_build_plt(output_bfd, splt->contents, |
| 2742 | splt->_raw_size / PLT_ENTRY_SIZE); |
| 2743 | } |
| 2744 | |
| 2745 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = |
| 2746 | PLT_ENTRY_SIZE; |
| 2747 | } |
| 2748 | |
| 2749 | /* Set the first entry in the global offset table to the address of |
| 2750 | the dynamic section. */ |
| 2751 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 2752 | BFD_ASSERT (sgot != NULL); |
| 2753 | if (sgot->_raw_size > 0) |
| 2754 | { |
| 2755 | if (sdyn == NULL) |
| 2756 | bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents); |
| 2757 | else |
| 2758 | bfd_put_64 (output_bfd, |
| 2759 | sdyn->output_section->vma + sdyn->output_offset, |
| 2760 | sgot->contents); |
| 2761 | } |
| 2762 | |
| 2763 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 8; |
| 2764 | |
| 2765 | return true; |
| 2766 | } |
| 2767 | \f |
| 2768 | /* Functions for dealing with the e_flags field. */ |
| 2769 | |
| 2770 | /* Merge backend specific data from an object file to the output |
| 2771 | object file when linking. */ |
| 2772 | |
| 2773 | static boolean |
| 2774 | sparc64_elf_merge_private_bfd_data (ibfd, obfd) |
| 2775 | bfd *ibfd; |
| 2776 | bfd *obfd; |
| 2777 | { |
| 2778 | boolean error; |
| 2779 | flagword new_flags, old_flags; |
| 2780 | int new_mm, old_mm; |
| 2781 | |
| 2782 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
| 2783 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
| 2784 | return true; |
| 2785 | |
| 2786 | new_flags = elf_elfheader (ibfd)->e_flags; |
| 2787 | old_flags = elf_elfheader (obfd)->e_flags; |
| 2788 | |
| 2789 | if (!elf_flags_init (obfd)) /* First call, no flags set */ |
| 2790 | { |
| 2791 | elf_flags_init (obfd) = true; |
| 2792 | elf_elfheader (obfd)->e_flags = new_flags; |
| 2793 | } |
| 2794 | |
| 2795 | else if (new_flags == old_flags) /* Compatible flags are ok */ |
| 2796 | ; |
| 2797 | |
| 2798 | else /* Incompatible flags */ |
| 2799 | { |
| 2800 | error = false; |
| 2801 | |
| 2802 | old_flags |= (new_flags & (EF_SPARC_SUN_US1|EF_SPARC_HAL_R1)); |
| 2803 | new_flags |= (old_flags & (EF_SPARC_SUN_US1|EF_SPARC_HAL_R1)); |
| 2804 | if ((old_flags & (EF_SPARC_SUN_US1|EF_SPARC_HAL_R1)) == |
| 2805 | (EF_SPARC_SUN_US1|EF_SPARC_HAL_R1)) |
| 2806 | { |
| 2807 | error = true; |
| 2808 | (*_bfd_error_handler) |
| 2809 | (_("%s: linking UltraSPARC specific with HAL specific code"), |
| 2810 | bfd_get_filename (ibfd)); |
| 2811 | } |
| 2812 | |
| 2813 | /* Choose the most restrictive memory ordering */ |
| 2814 | old_mm = (old_flags & EF_SPARCV9_MM); |
| 2815 | new_mm = (new_flags & EF_SPARCV9_MM); |
| 2816 | old_flags &= ~EF_SPARCV9_MM; |
| 2817 | new_flags &= ~EF_SPARCV9_MM; |
| 2818 | if (new_mm < old_mm) old_mm = new_mm; |
| 2819 | old_flags |= old_mm; |
| 2820 | new_flags |= old_mm; |
| 2821 | |
| 2822 | /* Warn about any other mismatches */ |
| 2823 | if (new_flags != old_flags) |
| 2824 | { |
| 2825 | error = true; |
| 2826 | (*_bfd_error_handler) |
| 2827 | (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), |
| 2828 | bfd_get_filename (ibfd), (long)new_flags, (long)old_flags); |
| 2829 | } |
| 2830 | |
| 2831 | elf_elfheader (obfd)->e_flags = old_flags; |
| 2832 | |
| 2833 | if (error) |
| 2834 | { |
| 2835 | bfd_set_error (bfd_error_bad_value); |
| 2836 | return false; |
| 2837 | } |
| 2838 | } |
| 2839 | return true; |
| 2840 | } |
| 2841 | \f |
| 2842 | /* Print a STT_REGISTER symbol to file FILE. */ |
| 2843 | |
| 2844 | static const char * |
| 2845 | sparc64_elf_print_symbol_all (abfd, filep, symbol) |
| 2846 | bfd *abfd; |
| 2847 | PTR filep; |
| 2848 | asymbol *symbol; |
| 2849 | { |
| 2850 | FILE *file = (FILE *) filep; |
| 2851 | int reg, type; |
| 2852 | |
| 2853 | if (ELF_ST_TYPE (((elf_symbol_type *) symbol)->internal_elf_sym.st_info) |
| 2854 | != STT_REGISTER) |
| 2855 | return NULL; |
| 2856 | |
| 2857 | reg = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; |
| 2858 | type = symbol->flags; |
| 2859 | fprintf (file, "REG_%c%c%11s%c%c R", "GOLI" [reg / 8], '0' + (reg & 7), "", |
| 2860 | ((type & BSF_LOCAL) |
| 2861 | ? (type & BSF_GLOBAL) ? '!' : 'l' |
| 2862 | : (type & BSF_GLOBAL) ? 'g' : ' '), |
| 2863 | (type & BSF_WEAK) ? 'w' : ' '); |
| 2864 | if (symbol->name == NULL || symbol->name [0] == '\0') |
| 2865 | return "#scratch"; |
| 2866 | else |
| 2867 | return symbol->name; |
| 2868 | } |
| 2869 | \f |
| 2870 | /* Set the right machine number for a SPARC64 ELF file. */ |
| 2871 | |
| 2872 | static boolean |
| 2873 | sparc64_elf_object_p (abfd) |
| 2874 | bfd *abfd; |
| 2875 | { |
| 2876 | unsigned long mach = bfd_mach_sparc_v9; |
| 2877 | |
| 2878 | if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1) |
| 2879 | mach = bfd_mach_sparc_v9a; |
| 2880 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach); |
| 2881 | } |
| 2882 | |
| 2883 | /* Relocations in the 64 bit SPARC ELF ABI are more complex than in |
| 2884 | standard ELF, because R_SPARC_OLO10 has secondary addend in |
| 2885 | ELF64_R_TYPE_DATA field. This structure is used to redirect the |
| 2886 | relocation handling routines. */ |
| 2887 | |
| 2888 | const struct elf_size_info sparc64_elf_size_info = |
| 2889 | { |
| 2890 | sizeof (Elf64_External_Ehdr), |
| 2891 | sizeof (Elf64_External_Phdr), |
| 2892 | sizeof (Elf64_External_Shdr), |
| 2893 | sizeof (Elf64_External_Rel), |
| 2894 | sizeof (Elf64_External_Rela), |
| 2895 | sizeof (Elf64_External_Sym), |
| 2896 | sizeof (Elf64_External_Dyn), |
| 2897 | sizeof (Elf_External_Note), |
| 2898 | 4, /* hash-table entry size */ |
| 2899 | /* internal relocations per external relocations. |
| 2900 | For link purposes we use just 1 internal per |
| 2901 | 1 external, for assembly and slurp symbol table |
| 2902 | we use 2. */ |
| 2903 | 1, |
| 2904 | 64, /* arch_size */ |
| 2905 | 8, /* file_align */ |
| 2906 | ELFCLASS64, |
| 2907 | EV_CURRENT, |
| 2908 | bfd_elf64_write_out_phdrs, |
| 2909 | bfd_elf64_write_shdrs_and_ehdr, |
| 2910 | sparc64_elf_write_relocs, |
| 2911 | bfd_elf64_swap_symbol_out, |
| 2912 | sparc64_elf_slurp_reloc_table, |
| 2913 | bfd_elf64_slurp_symbol_table, |
| 2914 | bfd_elf64_swap_dyn_in, |
| 2915 | bfd_elf64_swap_dyn_out, |
| 2916 | NULL, |
| 2917 | NULL, |
| 2918 | NULL, |
| 2919 | NULL |
| 2920 | }; |
| 2921 | |
| 2922 | #define TARGET_BIG_SYM bfd_elf64_sparc_vec |
| 2923 | #define TARGET_BIG_NAME "elf64-sparc" |
| 2924 | #define ELF_ARCH bfd_arch_sparc |
| 2925 | #define ELF_MAXPAGESIZE 0x100000 |
| 2926 | |
| 2927 | /* This is the official ABI value. */ |
| 2928 | #define ELF_MACHINE_CODE EM_SPARCV9 |
| 2929 | |
| 2930 | /* This is the value that we used before the ABI was released. */ |
| 2931 | #define ELF_MACHINE_ALT1 EM_OLD_SPARCV9 |
| 2932 | |
| 2933 | #define bfd_elf64_bfd_link_hash_table_create \ |
| 2934 | sparc64_elf_bfd_link_hash_table_create |
| 2935 | |
| 2936 | #define elf_info_to_howto \ |
| 2937 | sparc64_elf_info_to_howto |
| 2938 | #define bfd_elf64_get_reloc_upper_bound \ |
| 2939 | sparc64_elf_get_reloc_upper_bound |
| 2940 | #define bfd_elf64_get_dynamic_reloc_upper_bound \ |
| 2941 | sparc64_elf_get_dynamic_reloc_upper_bound |
| 2942 | #define bfd_elf64_canonicalize_dynamic_reloc \ |
| 2943 | sparc64_elf_canonicalize_dynamic_reloc |
| 2944 | #define bfd_elf64_bfd_reloc_type_lookup \ |
| 2945 | sparc64_elf_reloc_type_lookup |
| 2946 | |
| 2947 | #define elf_backend_create_dynamic_sections \ |
| 2948 | _bfd_elf_create_dynamic_sections |
| 2949 | #define elf_backend_add_symbol_hook \ |
| 2950 | sparc64_elf_add_symbol_hook |
| 2951 | #define elf_backend_get_symbol_type \ |
| 2952 | sparc64_elf_get_symbol_type |
| 2953 | #define elf_backend_symbol_processing \ |
| 2954 | sparc64_elf_symbol_processing |
| 2955 | #define elf_backend_check_relocs \ |
| 2956 | sparc64_elf_check_relocs |
| 2957 | #define elf_backend_adjust_dynamic_symbol \ |
| 2958 | sparc64_elf_adjust_dynamic_symbol |
| 2959 | #define elf_backend_size_dynamic_sections \ |
| 2960 | sparc64_elf_size_dynamic_sections |
| 2961 | #define elf_backend_relocate_section \ |
| 2962 | sparc64_elf_relocate_section |
| 2963 | #define elf_backend_finish_dynamic_symbol \ |
| 2964 | sparc64_elf_finish_dynamic_symbol |
| 2965 | #define elf_backend_finish_dynamic_sections \ |
| 2966 | sparc64_elf_finish_dynamic_sections |
| 2967 | #define elf_backend_print_symbol_all \ |
| 2968 | sparc64_elf_print_symbol_all |
| 2969 | #define elf_backend_output_arch_syms \ |
| 2970 | sparc64_elf_output_arch_syms |
| 2971 | |
| 2972 | #define bfd_elf64_bfd_merge_private_bfd_data \ |
| 2973 | sparc64_elf_merge_private_bfd_data |
| 2974 | |
| 2975 | #define elf_backend_size_info \ |
| 2976 | sparc64_elf_size_info |
| 2977 | #define elf_backend_object_p \ |
| 2978 | sparc64_elf_object_p |
| 2979 | |
| 2980 | #define elf_backend_want_got_plt 0 |
| 2981 | #define elf_backend_plt_readonly 0 |
| 2982 | #define elf_backend_want_plt_sym 1 |
| 2983 | |
| 2984 | /* Section 5.2.4 of the ABI specifies a 256-byte boundary for the table. */ |
| 2985 | #define elf_backend_plt_alignment 8 |
| 2986 | |
| 2987 | #define elf_backend_got_header_size 8 |
| 2988 | #define elf_backend_plt_header_size PLT_HEADER_SIZE |
| 2989 | |
| 2990 | #include "elf64-target.h" |