| 1 | /* SPARC-specific support for 32-bit ELF |
| 2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, |
| 3 | 2003 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of BFD, the Binary File Descriptor library. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 20 | |
| 21 | #include "bfd.h" |
| 22 | #include "sysdep.h" |
| 23 | #include "bfdlink.h" |
| 24 | #include "libbfd.h" |
| 25 | #include "elf-bfd.h" |
| 26 | #include "elf/sparc.h" |
| 27 | #include "opcode/sparc.h" |
| 28 | |
| 29 | static reloc_howto_type *elf32_sparc_reloc_type_lookup |
| 30 | PARAMS ((bfd *, bfd_reloc_code_real_type)); |
| 31 | static void elf32_sparc_info_to_howto |
| 32 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
| 33 | static bfd_boolean elf32_sparc_check_relocs |
| 34 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
| 35 | const Elf_Internal_Rela *)); |
| 36 | static bfd_boolean elf32_sparc_adjust_dynamic_symbol |
| 37 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); |
| 38 | static bfd_boolean allocate_dynrelocs |
| 39 | PARAMS ((struct elf_link_hash_entry *, PTR)); |
| 40 | static bfd_boolean readonly_dynrelocs |
| 41 | PARAMS ((struct elf_link_hash_entry *, PTR)); |
| 42 | static bfd_boolean elf32_sparc_size_dynamic_sections |
| 43 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 44 | static bfd_boolean elf32_sparc_new_section_hook |
| 45 | PARAMS ((bfd *, asection *)); |
| 46 | static bfd_boolean elf32_sparc_relax_section |
| 47 | PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *)); |
| 48 | static bfd_vma dtpoff_base |
| 49 | PARAMS ((struct bfd_link_info *)); |
| 50 | static bfd_vma tpoff |
| 51 | PARAMS ((struct bfd_link_info *, bfd_vma)); |
| 52 | static bfd_boolean elf32_sparc_relocate_section |
| 53 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
| 54 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); |
| 55 | static bfd_boolean elf32_sparc_finish_dynamic_symbol |
| 56 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
| 57 | Elf_Internal_Sym *)); |
| 58 | static bfd_boolean elf32_sparc_finish_dynamic_sections |
| 59 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 60 | static bfd_boolean elf32_sparc_merge_private_bfd_data |
| 61 | PARAMS ((bfd *, bfd *)); |
| 62 | static struct bfd_hash_entry *link_hash_newfunc |
| 63 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
| 64 | static struct bfd_link_hash_table *elf32_sparc_link_hash_table_create |
| 65 | PARAMS ((bfd *)); |
| 66 | static bfd_boolean create_got_section |
| 67 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 68 | static bfd_boolean elf32_sparc_create_dynamic_sections |
| 69 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 70 | static void elf32_sparc_copy_indirect_symbol |
| 71 | PARAMS ((struct elf_backend_data *, struct elf_link_hash_entry *, |
| 72 | struct elf_link_hash_entry *)); |
| 73 | static int elf32_sparc_tls_transition |
| 74 | PARAMS ((struct bfd_link_info *, bfd *, int, int)); |
| 75 | |
| 76 | static bfd_boolean elf32_sparc_mkobject |
| 77 | PARAMS ((bfd *)); |
| 78 | static bfd_boolean elf32_sparc_object_p |
| 79 | PARAMS ((bfd *)); |
| 80 | static void elf32_sparc_final_write_processing |
| 81 | PARAMS ((bfd *, bfd_boolean)); |
| 82 | static enum elf_reloc_type_class elf32_sparc_reloc_type_class |
| 83 | PARAMS ((const Elf_Internal_Rela *)); |
| 84 | static asection * elf32_sparc_gc_mark_hook |
| 85 | PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *, |
| 86 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); |
| 87 | static bfd_boolean elf32_sparc_gc_sweep_hook |
| 88 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
| 89 | const Elf_Internal_Rela *)); |
| 90 | \f |
| 91 | /* The relocation "howto" table. */ |
| 92 | |
| 93 | static bfd_reloc_status_type sparc_elf_notsupported_reloc |
| 94 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 95 | static bfd_reloc_status_type sparc_elf_wdisp16_reloc |
| 96 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 97 | static bfd_reloc_status_type sparc_elf_hix22_reloc |
| 98 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 99 | static bfd_reloc_status_type sparc_elf_lox10_reloc |
| 100 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 101 | |
| 102 | reloc_howto_type _bfd_sparc_elf_howto_table[] = |
| 103 | { |
| 104 | HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), |
| 105 | HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", FALSE,0,0x000000ff,TRUE), |
| 106 | HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", FALSE,0,0x0000ffff,TRUE), |
| 107 | HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", FALSE,0,0xffffffff,TRUE), |
| 108 | HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE), |
| 109 | HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE), |
| 110 | HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", FALSE,0,0xffffffff,TRUE), |
| 111 | HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE), |
| 112 | HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE), |
| 113 | HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", FALSE,0,0x003fffff,TRUE), |
| 114 | HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", FALSE,0,0x003fffff,TRUE), |
| 115 | HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", FALSE,0,0x00001fff,TRUE), |
| 116 | HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", FALSE,0,0x000003ff,TRUE), |
| 117 | HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE), |
| 118 | HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE), |
| 119 | HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE), |
| 120 | HOWTO(R_SPARC_PC10, 0,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", FALSE,0,0x000003ff,TRUE), |
| 121 | HOWTO(R_SPARC_PC22, 10,2,22,TRUE, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", FALSE,0,0x003fffff,TRUE), |
| 122 | HOWTO(R_SPARC_WPLT30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", FALSE,0,0x3fffffff,TRUE), |
| 123 | HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", FALSE,0,0x00000000,TRUE), |
| 124 | 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), |
| 125 | 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), |
| 126 | HOWTO(R_SPARC_RELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE), |
| 127 | HOWTO(R_SPARC_UA32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", FALSE,0,0xffffffff,TRUE), |
| 128 | HOWTO(R_SPARC_PLT32, 0,0,00,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", FALSE,0,0xffffffff,TRUE), |
| 129 | HOWTO(R_SPARC_HIPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HIPLT22", FALSE,0,0x00000000,TRUE), |
| 130 | HOWTO(R_SPARC_LOPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LOPLT10", FALSE,0,0x00000000,TRUE), |
| 131 | HOWTO(R_SPARC_PCPLT32, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT32", FALSE,0,0x00000000,TRUE), |
| 132 | HOWTO(R_SPARC_PCPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT22", FALSE,0,0x00000000,TRUE), |
| 133 | HOWTO(R_SPARC_PCPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT10", FALSE,0,0x00000000,TRUE), |
| 134 | HOWTO(R_SPARC_10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", FALSE,0,0x000003ff,TRUE), |
| 135 | HOWTO(R_SPARC_11, 0,2,11,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", FALSE,0,0x000007ff,TRUE), |
| 136 | /* These are for sparc64 in a 64 bit environment. |
| 137 | Values need to be here because the table is indexed by reloc number. */ |
| 138 | HOWTO(R_SPARC_64, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_64", FALSE,0,0x00000000,TRUE), |
| 139 | HOWTO(R_SPARC_OLO10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_OLO10", FALSE,0,0x00000000,TRUE), |
| 140 | HOWTO(R_SPARC_HH22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HH22", FALSE,0,0x00000000,TRUE), |
| 141 | HOWTO(R_SPARC_HM10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HM10", FALSE,0,0x00000000,TRUE), |
| 142 | HOWTO(R_SPARC_LM22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LM22", FALSE,0,0x00000000,TRUE), |
| 143 | HOWTO(R_SPARC_PC_HH22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PC_HH22", FALSE,0,0x00000000,TRUE), |
| 144 | HOWTO(R_SPARC_PC_HM10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PC_HM10", FALSE,0,0x00000000,TRUE), |
| 145 | HOWTO(R_SPARC_PC_LM22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PC_LM22", FALSE,0,0x00000000,TRUE), |
| 146 | /* End sparc64 in 64 bit environment values. |
| 147 | The following are for sparc64 in a 32 bit environment. */ |
| 148 | HOWTO(R_SPARC_WDISP16, 2,2,16,TRUE, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", FALSE,0,0x00000000,TRUE), |
| 149 | HOWTO(R_SPARC_WDISP19, 2,2,19,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", FALSE,0,0x0007ffff,TRUE), |
| 150 | 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), |
| 151 | HOWTO(R_SPARC_7, 0,2, 7,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", FALSE,0,0x0000007f,TRUE), |
| 152 | HOWTO(R_SPARC_5, 0,2, 5,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", FALSE,0,0x0000001f,TRUE), |
| 153 | HOWTO(R_SPARC_6, 0,2, 6,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", FALSE,0,0x0000003f,TRUE), |
| 154 | HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), |
| 155 | HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), |
| 156 | HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), |
| 157 | HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), |
| 158 | HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), |
| 159 | HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), |
| 160 | HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), |
| 161 | HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), |
| 162 | HOWTO(R_SPARC_UA64, 0,0, 0,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_UA64", FALSE,0,0x00000000,TRUE), |
| 163 | HOWTO(R_SPARC_UA16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", FALSE,0,0x0000ffff,TRUE), |
| 164 | HOWTO(R_SPARC_TLS_GD_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_HI22",FALSE,0,0x003fffff,TRUE), |
| 165 | HOWTO(R_SPARC_TLS_GD_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_LO10",FALSE,0,0x000003ff,TRUE), |
| 166 | HOWTO(R_SPARC_TLS_GD_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_ADD",FALSE,0,0x00000000,TRUE), |
| 167 | HOWTO(R_SPARC_TLS_GD_CALL,2,2,30,TRUE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_CALL",FALSE,0,0x3fffffff,TRUE), |
| 168 | HOWTO(R_SPARC_TLS_LDM_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_HI22",FALSE,0,0x003fffff,TRUE), |
| 169 | HOWTO(R_SPARC_TLS_LDM_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_LO10",FALSE,0,0x000003ff,TRUE), |
| 170 | HOWTO(R_SPARC_TLS_LDM_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_ADD",FALSE,0,0x00000000,TRUE), |
| 171 | HOWTO(R_SPARC_TLS_LDM_CALL,2,2,30,TRUE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_CALL",FALSE,0,0x3fffffff,TRUE), |
| 172 | HOWTO(R_SPARC_TLS_LDO_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_TLS_LDO_HIX22",FALSE,0,0x003fffff, FALSE), |
| 173 | HOWTO(R_SPARC_TLS_LDO_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LDO_LOX10",FALSE,0,0x000003ff, FALSE), |
| 174 | HOWTO(R_SPARC_TLS_LDO_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDO_ADD",FALSE,0,0x00000000,TRUE), |
| 175 | HOWTO(R_SPARC_TLS_IE_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_HI22",FALSE,0,0x003fffff,TRUE), |
| 176 | HOWTO(R_SPARC_TLS_IE_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LO10",FALSE,0,0x000003ff,TRUE), |
| 177 | HOWTO(R_SPARC_TLS_IE_LD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LD",FALSE,0,0x00000000,TRUE), |
| 178 | HOWTO(R_SPARC_TLS_IE_LDX,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LDX",FALSE,0,0x00000000,TRUE), |
| 179 | HOWTO(R_SPARC_TLS_IE_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_ADD",FALSE,0,0x00000000,TRUE), |
| 180 | HOWTO(R_SPARC_TLS_LE_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_TLS_LE_HIX22",FALSE,0,0x003fffff, FALSE), |
| 181 | HOWTO(R_SPARC_TLS_LE_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LE_LOX10",FALSE,0,0x000003ff, FALSE), |
| 182 | HOWTO(R_SPARC_TLS_DTPMOD32,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD32",FALSE,0,0x00000000,TRUE), |
| 183 | HOWTO(R_SPARC_TLS_DTPMOD64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD64",FALSE,0,0x00000000,TRUE), |
| 184 | HOWTO(R_SPARC_TLS_DTPOFF32,0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_TLS_DTPOFF32",FALSE,0,0xffffffff,TRUE), |
| 185 | HOWTO(R_SPARC_TLS_DTPOFF64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPOFF64",FALSE,0,0x00000000,TRUE), |
| 186 | HOWTO(R_SPARC_TLS_TPOFF32,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF32",FALSE,0,0x00000000,TRUE), |
| 187 | HOWTO(R_SPARC_TLS_TPOFF64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF64",FALSE,0,0x00000000,TRUE) |
| 188 | }; |
| 189 | static reloc_howto_type elf32_sparc_vtinherit_howto = |
| 190 | HOWTO (R_SPARC_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", FALSE,0, 0, FALSE); |
| 191 | static reloc_howto_type elf32_sparc_vtentry_howto = |
| 192 | HOWTO (R_SPARC_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_SPARC_GNU_VTENTRY", FALSE,0,0, FALSE); |
| 193 | static reloc_howto_type elf32_sparc_rev32_howto = |
| 194 | HOWTO(R_SPARC_REV32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_REV32", FALSE,0,0xffffffff,TRUE); |
| 195 | |
| 196 | struct elf_reloc_map { |
| 197 | bfd_reloc_code_real_type bfd_reloc_val; |
| 198 | unsigned char elf_reloc_val; |
| 199 | }; |
| 200 | |
| 201 | static const struct elf_reloc_map sparc_reloc_map[] = |
| 202 | { |
| 203 | { BFD_RELOC_NONE, R_SPARC_NONE, }, |
| 204 | { BFD_RELOC_16, R_SPARC_16, }, |
| 205 | { BFD_RELOC_16_PCREL, R_SPARC_DISP16 }, |
| 206 | { BFD_RELOC_8, R_SPARC_8 }, |
| 207 | { BFD_RELOC_8_PCREL, R_SPARC_DISP8 }, |
| 208 | { BFD_RELOC_CTOR, R_SPARC_32 }, |
| 209 | { BFD_RELOC_32, R_SPARC_32 }, |
| 210 | { BFD_RELOC_32_PCREL, R_SPARC_DISP32 }, |
| 211 | { BFD_RELOC_HI22, R_SPARC_HI22 }, |
| 212 | { BFD_RELOC_LO10, R_SPARC_LO10, }, |
| 213 | { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 }, |
| 214 | { BFD_RELOC_SPARC_PLT32, R_SPARC_PLT32 }, |
| 215 | { BFD_RELOC_SPARC22, R_SPARC_22 }, |
| 216 | { BFD_RELOC_SPARC13, R_SPARC_13 }, |
| 217 | { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 }, |
| 218 | { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 }, |
| 219 | { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 }, |
| 220 | { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 }, |
| 221 | { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 }, |
| 222 | { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 }, |
| 223 | { BFD_RELOC_SPARC_COPY, R_SPARC_COPY }, |
| 224 | { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT }, |
| 225 | { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT }, |
| 226 | { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE }, |
| 227 | { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 }, |
| 228 | { BFD_RELOC_SPARC_UA16, R_SPARC_UA16 }, |
| 229 | { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, |
| 230 | { BFD_RELOC_SPARC_UA64, R_SPARC_UA64 }, |
| 231 | { BFD_RELOC_SPARC_10, R_SPARC_10 }, |
| 232 | { BFD_RELOC_SPARC_11, R_SPARC_11 }, |
| 233 | { BFD_RELOC_SPARC_64, R_SPARC_64 }, |
| 234 | { BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10 }, |
| 235 | { BFD_RELOC_SPARC_HH22, R_SPARC_HH22 }, |
| 236 | { BFD_RELOC_SPARC_HM10, R_SPARC_HM10 }, |
| 237 | { BFD_RELOC_SPARC_LM22, R_SPARC_LM22 }, |
| 238 | { BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22 }, |
| 239 | { BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10 }, |
| 240 | { BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22 }, |
| 241 | { BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16 }, |
| 242 | { BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19 }, |
| 243 | { BFD_RELOC_SPARC_7, R_SPARC_7 }, |
| 244 | { BFD_RELOC_SPARC_5, R_SPARC_5 }, |
| 245 | { BFD_RELOC_SPARC_6, R_SPARC_6 }, |
| 246 | { BFD_RELOC_SPARC_TLS_GD_HI22, R_SPARC_TLS_GD_HI22 }, |
| 247 | { BFD_RELOC_SPARC_TLS_GD_LO10, R_SPARC_TLS_GD_LO10 }, |
| 248 | { BFD_RELOC_SPARC_TLS_GD_ADD, R_SPARC_TLS_GD_ADD }, |
| 249 | { BFD_RELOC_SPARC_TLS_GD_CALL, R_SPARC_TLS_GD_CALL }, |
| 250 | { BFD_RELOC_SPARC_TLS_LDM_HI22, R_SPARC_TLS_LDM_HI22 }, |
| 251 | { BFD_RELOC_SPARC_TLS_LDM_LO10, R_SPARC_TLS_LDM_LO10 }, |
| 252 | { BFD_RELOC_SPARC_TLS_LDM_ADD, R_SPARC_TLS_LDM_ADD }, |
| 253 | { BFD_RELOC_SPARC_TLS_LDM_CALL, R_SPARC_TLS_LDM_CALL }, |
| 254 | { BFD_RELOC_SPARC_TLS_LDO_HIX22, R_SPARC_TLS_LDO_HIX22 }, |
| 255 | { BFD_RELOC_SPARC_TLS_LDO_LOX10, R_SPARC_TLS_LDO_LOX10 }, |
| 256 | { BFD_RELOC_SPARC_TLS_LDO_ADD, R_SPARC_TLS_LDO_ADD }, |
| 257 | { BFD_RELOC_SPARC_TLS_IE_HI22, R_SPARC_TLS_IE_HI22 }, |
| 258 | { BFD_RELOC_SPARC_TLS_IE_LO10, R_SPARC_TLS_IE_LO10 }, |
| 259 | { BFD_RELOC_SPARC_TLS_IE_LD, R_SPARC_TLS_IE_LD }, |
| 260 | { BFD_RELOC_SPARC_TLS_IE_LDX, R_SPARC_TLS_IE_LDX }, |
| 261 | { BFD_RELOC_SPARC_TLS_IE_ADD, R_SPARC_TLS_IE_ADD }, |
| 262 | { BFD_RELOC_SPARC_TLS_LE_HIX22, R_SPARC_TLS_LE_HIX22 }, |
| 263 | { BFD_RELOC_SPARC_TLS_LE_LOX10, R_SPARC_TLS_LE_LOX10 }, |
| 264 | { BFD_RELOC_SPARC_TLS_DTPMOD32, R_SPARC_TLS_DTPMOD32 }, |
| 265 | { BFD_RELOC_SPARC_TLS_DTPMOD64, R_SPARC_TLS_DTPMOD64 }, |
| 266 | { BFD_RELOC_SPARC_TLS_DTPOFF32, R_SPARC_TLS_DTPOFF32 }, |
| 267 | { BFD_RELOC_SPARC_TLS_DTPOFF64, R_SPARC_TLS_DTPOFF64 }, |
| 268 | { BFD_RELOC_SPARC_TLS_TPOFF32, R_SPARC_TLS_TPOFF32 }, |
| 269 | { BFD_RELOC_SPARC_TLS_TPOFF64, R_SPARC_TLS_TPOFF64 }, |
| 270 | { BFD_RELOC_VTABLE_INHERIT, R_SPARC_GNU_VTINHERIT }, |
| 271 | { BFD_RELOC_VTABLE_ENTRY, R_SPARC_GNU_VTENTRY }, |
| 272 | { BFD_RELOC_SPARC_REV32, R_SPARC_REV32 } |
| 273 | }; |
| 274 | |
| 275 | static reloc_howto_type * |
| 276 | elf32_sparc_reloc_type_lookup (abfd, code) |
| 277 | bfd *abfd ATTRIBUTE_UNUSED; |
| 278 | bfd_reloc_code_real_type code; |
| 279 | { |
| 280 | unsigned int i; |
| 281 | |
| 282 | switch (code) |
| 283 | { |
| 284 | case BFD_RELOC_VTABLE_INHERIT: |
| 285 | return &elf32_sparc_vtinherit_howto; |
| 286 | |
| 287 | case BFD_RELOC_VTABLE_ENTRY: |
| 288 | return &elf32_sparc_vtentry_howto; |
| 289 | |
| 290 | case BFD_RELOC_SPARC_REV32: |
| 291 | return &elf32_sparc_rev32_howto; |
| 292 | |
| 293 | default: |
| 294 | for (i = 0; |
| 295 | i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); |
| 296 | i++) |
| 297 | { |
| 298 | if (sparc_reloc_map[i].bfd_reloc_val == code) |
| 299 | return (_bfd_sparc_elf_howto_table |
| 300 | + (int) sparc_reloc_map[i].elf_reloc_val); |
| 301 | } |
| 302 | } |
| 303 | bfd_set_error (bfd_error_bad_value); |
| 304 | return NULL; |
| 305 | } |
| 306 | |
| 307 | /* We need to use ELF32_R_TYPE so we have our own copy of this function, |
| 308 | and elf64-sparc.c has its own copy. */ |
| 309 | |
| 310 | static void |
| 311 | elf32_sparc_info_to_howto (abfd, cache_ptr, dst) |
| 312 | bfd *abfd ATTRIBUTE_UNUSED; |
| 313 | arelent *cache_ptr; |
| 314 | Elf_Internal_Rela *dst; |
| 315 | { |
| 316 | switch (ELF32_R_TYPE(dst->r_info)) |
| 317 | { |
| 318 | case R_SPARC_GNU_VTINHERIT: |
| 319 | cache_ptr->howto = &elf32_sparc_vtinherit_howto; |
| 320 | break; |
| 321 | |
| 322 | case R_SPARC_GNU_VTENTRY: |
| 323 | cache_ptr->howto = &elf32_sparc_vtentry_howto; |
| 324 | break; |
| 325 | |
| 326 | case R_SPARC_REV32: |
| 327 | cache_ptr->howto = &elf32_sparc_rev32_howto; |
| 328 | break; |
| 329 | |
| 330 | default: |
| 331 | BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_SPARC_max_std); |
| 332 | cache_ptr->howto = &_bfd_sparc_elf_howto_table[ELF32_R_TYPE(dst->r_info)]; |
| 333 | } |
| 334 | } |
| 335 | \f |
| 336 | /* For unsupported relocs. */ |
| 337 | |
| 338 | static bfd_reloc_status_type |
| 339 | sparc_elf_notsupported_reloc (abfd, |
| 340 | reloc_entry, |
| 341 | symbol, |
| 342 | data, |
| 343 | input_section, |
| 344 | output_bfd, |
| 345 | error_message) |
| 346 | bfd *abfd ATTRIBUTE_UNUSED; |
| 347 | arelent *reloc_entry ATTRIBUTE_UNUSED; |
| 348 | asymbol *symbol ATTRIBUTE_UNUSED; |
| 349 | PTR data ATTRIBUTE_UNUSED; |
| 350 | asection *input_section ATTRIBUTE_UNUSED; |
| 351 | bfd *output_bfd ATTRIBUTE_UNUSED; |
| 352 | char **error_message ATTRIBUTE_UNUSED; |
| 353 | { |
| 354 | return bfd_reloc_notsupported; |
| 355 | } |
| 356 | |
| 357 | /* Handle the WDISP16 reloc. */ |
| 358 | |
| 359 | static bfd_reloc_status_type |
| 360 | sparc_elf_wdisp16_reloc (abfd, |
| 361 | reloc_entry, |
| 362 | symbol, |
| 363 | data, |
| 364 | input_section, |
| 365 | output_bfd, |
| 366 | error_message) |
| 367 | bfd *abfd; |
| 368 | arelent *reloc_entry; |
| 369 | asymbol *symbol; |
| 370 | PTR data; |
| 371 | asection *input_section; |
| 372 | bfd *output_bfd; |
| 373 | char **error_message ATTRIBUTE_UNUSED; |
| 374 | { |
| 375 | bfd_vma relocation; |
| 376 | bfd_vma x; |
| 377 | |
| 378 | if (output_bfd != (bfd *) NULL |
| 379 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 380 | && (! reloc_entry->howto->partial_inplace |
| 381 | || reloc_entry->addend == 0)) |
| 382 | { |
| 383 | reloc_entry->address += input_section->output_offset; |
| 384 | return bfd_reloc_ok; |
| 385 | } |
| 386 | |
| 387 | if (output_bfd != NULL) |
| 388 | return bfd_reloc_continue; |
| 389 | |
| 390 | if (reloc_entry->address > input_section->_cooked_size) |
| 391 | return bfd_reloc_outofrange; |
| 392 | |
| 393 | relocation = (symbol->value |
| 394 | + symbol->section->output_section->vma |
| 395 | + symbol->section->output_offset); |
| 396 | relocation += reloc_entry->addend; |
| 397 | relocation -= (input_section->output_section->vma |
| 398 | + input_section->output_offset); |
| 399 | relocation -= reloc_entry->address; |
| 400 | |
| 401 | x = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); |
| 402 | x |= ((((relocation >> 2) & 0xc000) << 6) |
| 403 | | ((relocation >> 2) & 0x3fff)); |
| 404 | bfd_put_32 (abfd, x, (bfd_byte *) data + reloc_entry->address); |
| 405 | |
| 406 | if ((bfd_signed_vma) relocation < - 0x40000 |
| 407 | || (bfd_signed_vma) relocation > 0x3ffff) |
| 408 | return bfd_reloc_overflow; |
| 409 | else |
| 410 | return bfd_reloc_ok; |
| 411 | } |
| 412 | |
| 413 | /* Handle the HIX22 reloc. */ |
| 414 | |
| 415 | static bfd_reloc_status_type |
| 416 | sparc_elf_hix22_reloc (abfd, |
| 417 | reloc_entry, |
| 418 | symbol, |
| 419 | data, |
| 420 | input_section, |
| 421 | output_bfd, |
| 422 | error_message) |
| 423 | bfd *abfd; |
| 424 | arelent *reloc_entry; |
| 425 | asymbol *symbol; |
| 426 | PTR data; |
| 427 | asection *input_section; |
| 428 | bfd *output_bfd; |
| 429 | char **error_message ATTRIBUTE_UNUSED; |
| 430 | { |
| 431 | bfd_vma relocation; |
| 432 | bfd_vma insn; |
| 433 | |
| 434 | if (output_bfd != (bfd *) NULL |
| 435 | && (symbol->flags & BSF_SECTION_SYM) == 0) |
| 436 | { |
| 437 | reloc_entry->address += input_section->output_offset; |
| 438 | return bfd_reloc_ok; |
| 439 | } |
| 440 | |
| 441 | if (output_bfd != NULL) |
| 442 | return bfd_reloc_continue; |
| 443 | |
| 444 | if (reloc_entry->address > input_section->_cooked_size) |
| 445 | return bfd_reloc_outofrange; |
| 446 | |
| 447 | relocation = (symbol->value |
| 448 | + symbol->section->output_section->vma |
| 449 | + symbol->section->output_offset); |
| 450 | relocation += reloc_entry->addend; |
| 451 | insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); |
| 452 | |
| 453 | insn = (insn &~ (bfd_vma) 0x3fffff) | (((~relocation) >> 10) & 0x3fffff); |
| 454 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); |
| 455 | |
| 456 | return bfd_reloc_ok; |
| 457 | } |
| 458 | |
| 459 | /* Handle the LOX10 reloc. */ |
| 460 | |
| 461 | static bfd_reloc_status_type |
| 462 | sparc_elf_lox10_reloc (abfd, |
| 463 | reloc_entry, |
| 464 | symbol, |
| 465 | data, |
| 466 | input_section, |
| 467 | output_bfd, |
| 468 | error_message) |
| 469 | bfd *abfd; |
| 470 | arelent *reloc_entry; |
| 471 | asymbol *symbol; |
| 472 | PTR data; |
| 473 | asection *input_section; |
| 474 | bfd *output_bfd; |
| 475 | char **error_message ATTRIBUTE_UNUSED; |
| 476 | { |
| 477 | bfd_vma relocation; |
| 478 | bfd_vma insn; |
| 479 | |
| 480 | if (output_bfd != (bfd *) NULL |
| 481 | && (symbol->flags & BSF_SECTION_SYM) == 0) |
| 482 | { |
| 483 | reloc_entry->address += input_section->output_offset; |
| 484 | return bfd_reloc_ok; |
| 485 | } |
| 486 | |
| 487 | if (output_bfd != NULL) |
| 488 | return bfd_reloc_continue; |
| 489 | |
| 490 | if (reloc_entry->address > input_section->_cooked_size) |
| 491 | return bfd_reloc_outofrange; |
| 492 | |
| 493 | relocation = (symbol->value |
| 494 | + symbol->section->output_section->vma |
| 495 | + symbol->section->output_offset); |
| 496 | relocation += reloc_entry->addend; |
| 497 | insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); |
| 498 | |
| 499 | insn = (insn &~ (bfd_vma) 0x1fff) | 0x1c00 | (relocation & 0x3ff); |
| 500 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); |
| 501 | |
| 502 | return bfd_reloc_ok; |
| 503 | } |
| 504 | \f |
| 505 | /* Functions for the SPARC ELF linker. */ |
| 506 | |
| 507 | /* The name of the dynamic interpreter. This is put in the .interp |
| 508 | section. */ |
| 509 | |
| 510 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" |
| 511 | |
| 512 | /* The nop opcode we use. */ |
| 513 | |
| 514 | #define SPARC_NOP 0x01000000 |
| 515 | |
| 516 | /* The size in bytes of an entry in the procedure linkage table. */ |
| 517 | |
| 518 | #define PLT_ENTRY_SIZE 12 |
| 519 | |
| 520 | /* The first four entries in a procedure linkage table are reserved, |
| 521 | and the initial contents are unimportant (we zero them out). |
| 522 | Subsequent entries look like this. See the SVR4 ABI SPARC |
| 523 | supplement to see how this works. */ |
| 524 | |
| 525 | /* sethi %hi(.-.plt0),%g1. We fill in the address later. */ |
| 526 | #define PLT_ENTRY_WORD0 0x03000000 |
| 527 | /* b,a .plt0. We fill in the offset later. */ |
| 528 | #define PLT_ENTRY_WORD1 0x30800000 |
| 529 | /* nop. */ |
| 530 | #define PLT_ENTRY_WORD2 SPARC_NOP |
| 531 | |
| 532 | /* The SPARC linker needs to keep track of the number of relocs that it |
| 533 | decides to copy as dynamic relocs in check_relocs for each symbol. |
| 534 | This is so that it can later discard them if they are found to be |
| 535 | unnecessary. We store the information in a field extending the |
| 536 | regular ELF linker hash table. */ |
| 537 | |
| 538 | struct elf32_sparc_dyn_relocs |
| 539 | { |
| 540 | struct elf32_sparc_dyn_relocs *next; |
| 541 | |
| 542 | /* The input section of the reloc. */ |
| 543 | asection *sec; |
| 544 | |
| 545 | /* Total number of relocs copied for the input section. */ |
| 546 | bfd_size_type count; |
| 547 | |
| 548 | /* Number of pc-relative relocs copied for the input section. */ |
| 549 | bfd_size_type pc_count; |
| 550 | }; |
| 551 | |
| 552 | /* SPARC ELF linker hash entry. */ |
| 553 | |
| 554 | struct elf32_sparc_link_hash_entry |
| 555 | { |
| 556 | struct elf_link_hash_entry elf; |
| 557 | |
| 558 | /* Track dynamic relocs copied for this symbol. */ |
| 559 | struct elf32_sparc_dyn_relocs *dyn_relocs; |
| 560 | |
| 561 | #define GOT_UNKNOWN 0 |
| 562 | #define GOT_NORMAL 1 |
| 563 | #define GOT_TLS_GD 2 |
| 564 | #define GOT_TLS_IE 3 |
| 565 | unsigned char tls_type; |
| 566 | }; |
| 567 | |
| 568 | #define elf32_sparc_hash_entry(ent) ((struct elf32_sparc_link_hash_entry *)(ent)) |
| 569 | |
| 570 | struct elf32_sparc_obj_tdata |
| 571 | { |
| 572 | struct elf_obj_tdata root; |
| 573 | |
| 574 | /* tls_type for each local got entry. */ |
| 575 | char *local_got_tls_type; |
| 576 | |
| 577 | /* TRUE if TLS GD relocs has been seen for this object. */ |
| 578 | bfd_boolean has_tlsgd; |
| 579 | }; |
| 580 | |
| 581 | #define elf32_sparc_tdata(abfd) \ |
| 582 | ((struct elf32_sparc_obj_tdata *) (abfd)->tdata.any) |
| 583 | |
| 584 | #define elf32_sparc_local_got_tls_type(abfd) \ |
| 585 | (elf32_sparc_tdata (abfd)->local_got_tls_type) |
| 586 | |
| 587 | static bfd_boolean |
| 588 | elf32_sparc_mkobject (abfd) |
| 589 | bfd *abfd; |
| 590 | { |
| 591 | bfd_size_type amt = sizeof (struct elf32_sparc_obj_tdata); |
| 592 | abfd->tdata.any = bfd_zalloc (abfd, amt); |
| 593 | if (abfd->tdata.any == NULL) |
| 594 | return FALSE; |
| 595 | return TRUE; |
| 596 | } |
| 597 | |
| 598 | /* SPARC ELF linker hash table. */ |
| 599 | |
| 600 | struct elf32_sparc_link_hash_table |
| 601 | { |
| 602 | struct elf_link_hash_table elf; |
| 603 | |
| 604 | /* Short-cuts to get to dynamic linker sections. */ |
| 605 | asection *sgot; |
| 606 | asection *srelgot; |
| 607 | asection *splt; |
| 608 | asection *srelplt; |
| 609 | asection *sdynbss; |
| 610 | asection *srelbss; |
| 611 | |
| 612 | union { |
| 613 | bfd_signed_vma refcount; |
| 614 | bfd_vma offset; |
| 615 | } tls_ldm_got; |
| 616 | |
| 617 | /* Small local sym to section mapping cache. */ |
| 618 | struct sym_sec_cache sym_sec; |
| 619 | }; |
| 620 | |
| 621 | /* Get the SPARC ELF linker hash table from a link_info structure. */ |
| 622 | |
| 623 | #define elf32_sparc_hash_table(p) \ |
| 624 | ((struct elf32_sparc_link_hash_table *) ((p)->hash)) |
| 625 | |
| 626 | /* Create an entry in an i386 ELF linker hash table. */ |
| 627 | |
| 628 | static struct bfd_hash_entry * |
| 629 | link_hash_newfunc (entry, table, string) |
| 630 | struct bfd_hash_entry *entry; |
| 631 | struct bfd_hash_table *table; |
| 632 | const char *string; |
| 633 | { |
| 634 | /* Allocate the structure if it has not already been allocated by a |
| 635 | subclass. */ |
| 636 | if (entry == NULL) |
| 637 | { |
| 638 | entry = bfd_hash_allocate (table, |
| 639 | sizeof (struct elf32_sparc_link_hash_entry)); |
| 640 | if (entry == NULL) |
| 641 | return entry; |
| 642 | } |
| 643 | |
| 644 | /* Call the allocation method of the superclass. */ |
| 645 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
| 646 | if (entry != NULL) |
| 647 | { |
| 648 | struct elf32_sparc_link_hash_entry *eh; |
| 649 | |
| 650 | eh = (struct elf32_sparc_link_hash_entry *) entry; |
| 651 | eh->dyn_relocs = NULL; |
| 652 | eh->tls_type = GOT_UNKNOWN; |
| 653 | } |
| 654 | |
| 655 | return entry; |
| 656 | } |
| 657 | |
| 658 | /* Create a SPARC ELF linker hash table. */ |
| 659 | |
| 660 | static struct bfd_link_hash_table * |
| 661 | elf32_sparc_link_hash_table_create (abfd) |
| 662 | bfd *abfd; |
| 663 | { |
| 664 | struct elf32_sparc_link_hash_table *ret; |
| 665 | bfd_size_type amt = sizeof (struct elf32_sparc_link_hash_table); |
| 666 | |
| 667 | ret = (struct elf32_sparc_link_hash_table *) bfd_malloc (amt); |
| 668 | if (ret == NULL) |
| 669 | return NULL; |
| 670 | |
| 671 | if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc)) |
| 672 | { |
| 673 | free (ret); |
| 674 | return NULL; |
| 675 | } |
| 676 | |
| 677 | ret->sgot = NULL; |
| 678 | ret->srelgot = NULL; |
| 679 | ret->splt = NULL; |
| 680 | ret->srelplt = NULL; |
| 681 | ret->sdynbss = NULL; |
| 682 | ret->srelbss = NULL; |
| 683 | ret->tls_ldm_got.refcount = 0; |
| 684 | ret->sym_sec.abfd = NULL; |
| 685 | |
| 686 | return &ret->elf.root; |
| 687 | } |
| 688 | |
| 689 | /* Create .got and .rela.got sections in DYNOBJ, and set up |
| 690 | shortcuts to them in our hash table. */ |
| 691 | |
| 692 | static bfd_boolean |
| 693 | create_got_section (dynobj, info) |
| 694 | bfd *dynobj; |
| 695 | struct bfd_link_info *info; |
| 696 | { |
| 697 | struct elf32_sparc_link_hash_table *htab; |
| 698 | |
| 699 | if (! _bfd_elf_create_got_section (dynobj, info)) |
| 700 | return FALSE; |
| 701 | |
| 702 | htab = elf32_sparc_hash_table (info); |
| 703 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 704 | if (!htab->sgot) |
| 705 | abort (); |
| 706 | |
| 707 | htab->srelgot = bfd_make_section (dynobj, ".rela.got"); |
| 708 | if (htab->srelgot == NULL |
| 709 | || ! bfd_set_section_flags (dynobj, htab->srelgot, |
| 710 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS |
| 711 | | SEC_IN_MEMORY | SEC_LINKER_CREATED |
| 712 | | SEC_READONLY)) |
| 713 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2)) |
| 714 | return FALSE; |
| 715 | return TRUE; |
| 716 | } |
| 717 | |
| 718 | /* Create .plt, .rela.plt, .got, .rela.got, .dynbss, and |
| 719 | .rela.bss sections in DYNOBJ, and set up shortcuts to them in our |
| 720 | hash table. */ |
| 721 | |
| 722 | static bfd_boolean |
| 723 | elf32_sparc_create_dynamic_sections (dynobj, info) |
| 724 | bfd *dynobj; |
| 725 | struct bfd_link_info *info; |
| 726 | { |
| 727 | struct elf32_sparc_link_hash_table *htab; |
| 728 | |
| 729 | htab = elf32_sparc_hash_table (info); |
| 730 | if (!htab->sgot && !create_got_section (dynobj, info)) |
| 731 | return FALSE; |
| 732 | |
| 733 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
| 734 | return FALSE; |
| 735 | |
| 736 | htab->splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 737 | htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt"); |
| 738 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); |
| 739 | if (!info->shared) |
| 740 | htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss"); |
| 741 | |
| 742 | if (!htab->splt || !htab->srelplt || !htab->sdynbss |
| 743 | || (!info->shared && !htab->srelbss)) |
| 744 | abort (); |
| 745 | |
| 746 | return TRUE; |
| 747 | } |
| 748 | |
| 749 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
| 750 | |
| 751 | static void |
| 752 | elf32_sparc_copy_indirect_symbol (bed, dir, ind) |
| 753 | struct elf_backend_data *bed; |
| 754 | struct elf_link_hash_entry *dir, *ind; |
| 755 | { |
| 756 | struct elf32_sparc_link_hash_entry *edir, *eind; |
| 757 | |
| 758 | edir = (struct elf32_sparc_link_hash_entry *) dir; |
| 759 | eind = (struct elf32_sparc_link_hash_entry *) ind; |
| 760 | |
| 761 | if (eind->dyn_relocs != NULL) |
| 762 | { |
| 763 | if (edir->dyn_relocs != NULL) |
| 764 | { |
| 765 | struct elf32_sparc_dyn_relocs **pp; |
| 766 | struct elf32_sparc_dyn_relocs *p; |
| 767 | |
| 768 | if (ind->root.type == bfd_link_hash_indirect) |
| 769 | abort (); |
| 770 | |
| 771 | /* Add reloc counts against the weak sym to the strong sym |
| 772 | list. Merge any entries against the same section. */ |
| 773 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) |
| 774 | { |
| 775 | struct elf32_sparc_dyn_relocs *q; |
| 776 | |
| 777 | for (q = edir->dyn_relocs; q != NULL; q = q->next) |
| 778 | if (q->sec == p->sec) |
| 779 | { |
| 780 | q->pc_count += p->pc_count; |
| 781 | q->count += p->count; |
| 782 | *pp = p->next; |
| 783 | break; |
| 784 | } |
| 785 | if (q == NULL) |
| 786 | pp = &p->next; |
| 787 | } |
| 788 | *pp = edir->dyn_relocs; |
| 789 | } |
| 790 | |
| 791 | edir->dyn_relocs = eind->dyn_relocs; |
| 792 | eind->dyn_relocs = NULL; |
| 793 | } |
| 794 | |
| 795 | if (ind->root.type == bfd_link_hash_indirect |
| 796 | && dir->got.refcount <= 0) |
| 797 | { |
| 798 | edir->tls_type = eind->tls_type; |
| 799 | eind->tls_type = GOT_UNKNOWN; |
| 800 | } |
| 801 | _bfd_elf_link_hash_copy_indirect (bed, dir, ind); |
| 802 | } |
| 803 | |
| 804 | static int |
| 805 | elf32_sparc_tls_transition (info, abfd, r_type, is_local) |
| 806 | struct bfd_link_info *info; |
| 807 | bfd *abfd; |
| 808 | int r_type; |
| 809 | int is_local; |
| 810 | { |
| 811 | if (r_type == R_SPARC_TLS_GD_HI22 |
| 812 | && ! elf32_sparc_tdata (abfd)->has_tlsgd) |
| 813 | r_type = R_SPARC_REV32; |
| 814 | |
| 815 | if (info->shared) |
| 816 | return r_type; |
| 817 | |
| 818 | switch (r_type) |
| 819 | { |
| 820 | case R_SPARC_TLS_GD_HI22: |
| 821 | if (is_local) |
| 822 | return R_SPARC_TLS_LE_HIX22; |
| 823 | return R_SPARC_TLS_IE_HI22; |
| 824 | case R_SPARC_TLS_GD_LO10: |
| 825 | if (is_local) |
| 826 | return R_SPARC_TLS_LE_LOX10; |
| 827 | return R_SPARC_TLS_IE_LO10; |
| 828 | case R_SPARC_TLS_IE_HI22: |
| 829 | if (is_local) |
| 830 | return R_SPARC_TLS_LE_HIX22; |
| 831 | return r_type; |
| 832 | case R_SPARC_TLS_IE_LO10: |
| 833 | if (is_local) |
| 834 | return R_SPARC_TLS_LE_LOX10; |
| 835 | return r_type; |
| 836 | case R_SPARC_TLS_LDM_HI22: |
| 837 | return R_SPARC_TLS_LE_HIX22; |
| 838 | case R_SPARC_TLS_LDM_LO10: |
| 839 | return R_SPARC_TLS_LE_LOX10; |
| 840 | } |
| 841 | |
| 842 | return r_type; |
| 843 | } |
| 844 | |
| 845 | /* Look through the relocs for a section during the first phase, and |
| 846 | allocate space in the global offset table or procedure linkage |
| 847 | table. */ |
| 848 | |
| 849 | static bfd_boolean |
| 850 | elf32_sparc_check_relocs (abfd, info, sec, relocs) |
| 851 | bfd *abfd; |
| 852 | struct bfd_link_info *info; |
| 853 | asection *sec; |
| 854 | const Elf_Internal_Rela *relocs; |
| 855 | { |
| 856 | struct elf32_sparc_link_hash_table *htab; |
| 857 | Elf_Internal_Shdr *symtab_hdr; |
| 858 | struct elf_link_hash_entry **sym_hashes; |
| 859 | bfd_vma *local_got_offsets; |
| 860 | const Elf_Internal_Rela *rel; |
| 861 | const Elf_Internal_Rela *rel_end; |
| 862 | asection *sreloc; |
| 863 | bfd_boolean checked_tlsgd = FALSE; |
| 864 | |
| 865 | if (info->relocatable) |
| 866 | return TRUE; |
| 867 | |
| 868 | htab = elf32_sparc_hash_table (info); |
| 869 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 870 | sym_hashes = elf_sym_hashes (abfd); |
| 871 | local_got_offsets = elf_local_got_offsets (abfd); |
| 872 | |
| 873 | sreloc = NULL; |
| 874 | |
| 875 | rel_end = relocs + sec->reloc_count; |
| 876 | for (rel = relocs; rel < rel_end; rel++) |
| 877 | { |
| 878 | unsigned int r_type; |
| 879 | unsigned long r_symndx; |
| 880 | struct elf_link_hash_entry *h; |
| 881 | |
| 882 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 883 | r_type = ELF32_R_TYPE (rel->r_info); |
| 884 | |
| 885 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
| 886 | { |
| 887 | (*_bfd_error_handler) (_("%s: bad symbol index: %d"), |
| 888 | bfd_archive_filename (abfd), |
| 889 | r_symndx); |
| 890 | return FALSE; |
| 891 | } |
| 892 | |
| 893 | if (r_symndx < symtab_hdr->sh_info) |
| 894 | h = NULL; |
| 895 | else |
| 896 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 897 | |
| 898 | /* Compatibility with old R_SPARC_REV32 reloc conflicting |
| 899 | with R_SPARC_TLS_GD_HI22. */ |
| 900 | if (! checked_tlsgd) |
| 901 | switch (r_type) |
| 902 | { |
| 903 | case R_SPARC_TLS_GD_HI22: |
| 904 | { |
| 905 | const Elf_Internal_Rela *relt; |
| 906 | |
| 907 | for (relt = rel + 1; relt < rel_end; relt++) |
| 908 | if (ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_LO10 |
| 909 | || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_ADD |
| 910 | || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_CALL) |
| 911 | break; |
| 912 | checked_tlsgd = TRUE; |
| 913 | elf32_sparc_tdata (abfd)->has_tlsgd = relt < rel_end; |
| 914 | } |
| 915 | break; |
| 916 | case R_SPARC_TLS_GD_LO10: |
| 917 | case R_SPARC_TLS_GD_ADD: |
| 918 | case R_SPARC_TLS_GD_CALL: |
| 919 | checked_tlsgd = TRUE; |
| 920 | elf32_sparc_tdata (abfd)->has_tlsgd = TRUE; |
| 921 | break; |
| 922 | } |
| 923 | |
| 924 | r_type = elf32_sparc_tls_transition (info, abfd, r_type, h == NULL); |
| 925 | switch (r_type) |
| 926 | { |
| 927 | case R_SPARC_TLS_LDM_HI22: |
| 928 | case R_SPARC_TLS_LDM_LO10: |
| 929 | htab->tls_ldm_got.refcount += 1; |
| 930 | break; |
| 931 | |
| 932 | case R_SPARC_TLS_LE_HIX22: |
| 933 | case R_SPARC_TLS_LE_LOX10: |
| 934 | if (info->shared) |
| 935 | goto r_sparc_plt32; |
| 936 | break; |
| 937 | |
| 938 | case R_SPARC_TLS_IE_HI22: |
| 939 | case R_SPARC_TLS_IE_LO10: |
| 940 | if (info->shared) |
| 941 | info->flags |= DF_STATIC_TLS; |
| 942 | /* Fall through */ |
| 943 | |
| 944 | case R_SPARC_GOT10: |
| 945 | case R_SPARC_GOT13: |
| 946 | case R_SPARC_GOT22: |
| 947 | case R_SPARC_TLS_GD_HI22: |
| 948 | case R_SPARC_TLS_GD_LO10: |
| 949 | /* This symbol requires a global offset table entry. */ |
| 950 | { |
| 951 | int tls_type, old_tls_type; |
| 952 | |
| 953 | switch (r_type) |
| 954 | { |
| 955 | default: |
| 956 | case R_SPARC_GOT10: |
| 957 | case R_SPARC_GOT13: |
| 958 | case R_SPARC_GOT22: |
| 959 | tls_type = GOT_NORMAL; |
| 960 | break; |
| 961 | case R_SPARC_TLS_GD_HI22: |
| 962 | case R_SPARC_TLS_GD_LO10: |
| 963 | tls_type = GOT_TLS_GD; |
| 964 | break; |
| 965 | case R_SPARC_TLS_IE_HI22: |
| 966 | case R_SPARC_TLS_IE_LO10: |
| 967 | tls_type = GOT_TLS_IE; |
| 968 | break; |
| 969 | } |
| 970 | |
| 971 | if (h != NULL) |
| 972 | { |
| 973 | h->got.refcount += 1; |
| 974 | old_tls_type = elf32_sparc_hash_entry(h)->tls_type; |
| 975 | } |
| 976 | else |
| 977 | { |
| 978 | bfd_signed_vma *local_got_refcounts; |
| 979 | |
| 980 | /* This is a global offset table entry for a local symbol. */ |
| 981 | local_got_refcounts = elf_local_got_refcounts (abfd); |
| 982 | if (local_got_refcounts == NULL) |
| 983 | { |
| 984 | bfd_size_type size; |
| 985 | |
| 986 | size = symtab_hdr->sh_info; |
| 987 | size *= (sizeof (bfd_signed_vma) + sizeof(char)); |
| 988 | local_got_refcounts = ((bfd_signed_vma *) |
| 989 | bfd_zalloc (abfd, size)); |
| 990 | if (local_got_refcounts == NULL) |
| 991 | return FALSE; |
| 992 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
| 993 | elf32_sparc_local_got_tls_type (abfd) |
| 994 | = (char *) (local_got_refcounts + symtab_hdr->sh_info); |
| 995 | } |
| 996 | local_got_refcounts[r_symndx] += 1; |
| 997 | old_tls_type = elf32_sparc_local_got_tls_type (abfd) [r_symndx]; |
| 998 | } |
| 999 | |
| 1000 | /* If a TLS symbol is accessed using IE at least once, |
| 1001 | there is no point to use dynamic model for it. */ |
| 1002 | if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN |
| 1003 | && (old_tls_type != GOT_TLS_GD |
| 1004 | || tls_type != GOT_TLS_IE)) |
| 1005 | { |
| 1006 | if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD) |
| 1007 | tls_type = old_tls_type; |
| 1008 | else |
| 1009 | { |
| 1010 | (*_bfd_error_handler) |
| 1011 | (_("%s: `%s' accessed both as normal and thread local symbol"), |
| 1012 | bfd_archive_filename (abfd), |
| 1013 | h ? h->root.root.string : "<local>"); |
| 1014 | return FALSE; |
| 1015 | } |
| 1016 | } |
| 1017 | |
| 1018 | if (old_tls_type != tls_type) |
| 1019 | { |
| 1020 | if (h != NULL) |
| 1021 | elf32_sparc_hash_entry (h)->tls_type = tls_type; |
| 1022 | else |
| 1023 | elf32_sparc_local_got_tls_type (abfd) [r_symndx] = tls_type; |
| 1024 | } |
| 1025 | } |
| 1026 | |
| 1027 | if (htab->sgot == NULL) |
| 1028 | { |
| 1029 | if (htab->elf.dynobj == NULL) |
| 1030 | htab->elf.dynobj = abfd; |
| 1031 | if (!create_got_section (htab->elf.dynobj, info)) |
| 1032 | return FALSE; |
| 1033 | } |
| 1034 | break; |
| 1035 | |
| 1036 | case R_SPARC_TLS_GD_CALL: |
| 1037 | case R_SPARC_TLS_LDM_CALL: |
| 1038 | if (info->shared) |
| 1039 | { |
| 1040 | /* These are basically R_SPARC_TLS_WPLT30 relocs against |
| 1041 | __tls_get_addr. */ |
| 1042 | struct bfd_link_hash_entry *bh = NULL; |
| 1043 | if (! _bfd_generic_link_add_one_symbol (info, abfd, |
| 1044 | "__tls_get_addr", 0, |
| 1045 | bfd_und_section_ptr, 0, |
| 1046 | NULL, FALSE, FALSE, |
| 1047 | &bh)) |
| 1048 | return FALSE; |
| 1049 | h = (struct elf_link_hash_entry *) bh; |
| 1050 | } |
| 1051 | else |
| 1052 | break; |
| 1053 | /* Fall through */ |
| 1054 | |
| 1055 | case R_SPARC_PLT32: |
| 1056 | case R_SPARC_WPLT30: |
| 1057 | /* This symbol requires a procedure linkage table entry. We |
| 1058 | actually build the entry in adjust_dynamic_symbol, |
| 1059 | because this might be a case of linking PIC code without |
| 1060 | linking in any dynamic objects, in which case we don't |
| 1061 | need to generate a procedure linkage table after all. */ |
| 1062 | |
| 1063 | if (h == NULL) |
| 1064 | { |
| 1065 | /* The Solaris native assembler will generate a WPLT30 |
| 1066 | reloc for a local symbol if you assemble a call from |
| 1067 | one section to another when using -K pic. We treat |
| 1068 | it as WDISP30. */ |
| 1069 | if (ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32) |
| 1070 | goto r_sparc_plt32; |
| 1071 | break; |
| 1072 | } |
| 1073 | |
| 1074 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; |
| 1075 | |
| 1076 | if (ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32) |
| 1077 | goto r_sparc_plt32; |
| 1078 | h->plt.refcount += 1; |
| 1079 | break; |
| 1080 | |
| 1081 | case R_SPARC_PC10: |
| 1082 | case R_SPARC_PC22: |
| 1083 | if (h != NULL) |
| 1084 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; |
| 1085 | |
| 1086 | if (h != NULL |
| 1087 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) |
| 1088 | break; |
| 1089 | /* Fall through. */ |
| 1090 | |
| 1091 | case R_SPARC_DISP8: |
| 1092 | case R_SPARC_DISP16: |
| 1093 | case R_SPARC_DISP32: |
| 1094 | case R_SPARC_WDISP30: |
| 1095 | case R_SPARC_WDISP22: |
| 1096 | case R_SPARC_WDISP19: |
| 1097 | case R_SPARC_WDISP16: |
| 1098 | case R_SPARC_8: |
| 1099 | case R_SPARC_16: |
| 1100 | case R_SPARC_32: |
| 1101 | case R_SPARC_HI22: |
| 1102 | case R_SPARC_22: |
| 1103 | case R_SPARC_13: |
| 1104 | case R_SPARC_LO10: |
| 1105 | case R_SPARC_UA16: |
| 1106 | case R_SPARC_UA32: |
| 1107 | if (h != NULL) |
| 1108 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; |
| 1109 | |
| 1110 | r_sparc_plt32: |
| 1111 | if (h != NULL && !info->shared) |
| 1112 | { |
| 1113 | /* We may need a .plt entry if the function this reloc |
| 1114 | refers to is in a shared lib. */ |
| 1115 | h->plt.refcount += 1; |
| 1116 | } |
| 1117 | |
| 1118 | /* If we are creating a shared library, and this is a reloc |
| 1119 | against a global symbol, or a non PC relative reloc |
| 1120 | against a local symbol, then we need to copy the reloc |
| 1121 | into the shared library. However, if we are linking with |
| 1122 | -Bsymbolic, we do not need to copy a reloc against a |
| 1123 | global symbol which is defined in an object we are |
| 1124 | including in the link (i.e., DEF_REGULAR is set). At |
| 1125 | this point we have not seen all the input files, so it is |
| 1126 | possible that DEF_REGULAR is not set now but will be set |
| 1127 | later (it is never cleared). In case of a weak definition, |
| 1128 | DEF_REGULAR may be cleared later by a strong definition in |
| 1129 | a shared library. We account for that possibility below by |
| 1130 | storing information in the relocs_copied field of the hash |
| 1131 | table entry. A similar situation occurs when creating |
| 1132 | shared libraries and symbol visibility changes render the |
| 1133 | symbol local. |
| 1134 | |
| 1135 | If on the other hand, we are creating an executable, we |
| 1136 | may need to keep relocations for symbols satisfied by a |
| 1137 | dynamic library if we manage to avoid copy relocs for the |
| 1138 | symbol. */ |
| 1139 | if ((info->shared |
| 1140 | && (sec->flags & SEC_ALLOC) != 0 |
| 1141 | && (! _bfd_sparc_elf_howto_table[r_type].pc_relative |
| 1142 | || (h != NULL |
| 1143 | && (! info->symbolic |
| 1144 | || h->root.type == bfd_link_hash_defweak |
| 1145 | || (h->elf_link_hash_flags |
| 1146 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) |
| 1147 | || (!info->shared |
| 1148 | && (sec->flags & SEC_ALLOC) != 0 |
| 1149 | && h != NULL |
| 1150 | && (h->root.type == bfd_link_hash_defweak |
| 1151 | || (h->elf_link_hash_flags |
| 1152 | & ELF_LINK_HASH_DEF_REGULAR) == 0))) |
| 1153 | { |
| 1154 | struct elf32_sparc_dyn_relocs *p; |
| 1155 | struct elf32_sparc_dyn_relocs **head; |
| 1156 | |
| 1157 | /* When creating a shared object, we must copy these |
| 1158 | relocs into the output file. We create a reloc |
| 1159 | section in dynobj and make room for the reloc. */ |
| 1160 | if (sreloc == NULL) |
| 1161 | { |
| 1162 | const char *name; |
| 1163 | bfd *dynobj; |
| 1164 | |
| 1165 | name = (bfd_elf_string_from_elf_section |
| 1166 | (abfd, |
| 1167 | elf_elfheader (abfd)->e_shstrndx, |
| 1168 | elf_section_data (sec)->rel_hdr.sh_name)); |
| 1169 | if (name == NULL) |
| 1170 | return FALSE; |
| 1171 | |
| 1172 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 |
| 1173 | && strcmp (bfd_get_section_name (abfd, sec), |
| 1174 | name + 5) == 0); |
| 1175 | |
| 1176 | if (htab->elf.dynobj == NULL) |
| 1177 | htab->elf.dynobj = abfd; |
| 1178 | dynobj = htab->elf.dynobj; |
| 1179 | |
| 1180 | sreloc = bfd_get_section_by_name (dynobj, name); |
| 1181 | if (sreloc == NULL) |
| 1182 | { |
| 1183 | flagword flags; |
| 1184 | |
| 1185 | sreloc = bfd_make_section (dynobj, name); |
| 1186 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
| 1187 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); |
| 1188 | if ((sec->flags & SEC_ALLOC) != 0) |
| 1189 | flags |= SEC_ALLOC | SEC_LOAD; |
| 1190 | if (sreloc == NULL |
| 1191 | || ! bfd_set_section_flags (dynobj, sreloc, flags) |
| 1192 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) |
| 1193 | return FALSE; |
| 1194 | } |
| 1195 | elf_section_data (sec)->sreloc = sreloc; |
| 1196 | } |
| 1197 | |
| 1198 | /* If this is a global symbol, we count the number of |
| 1199 | relocations we need for this symbol. */ |
| 1200 | if (h != NULL) |
| 1201 | head = &((struct elf32_sparc_link_hash_entry *) h)->dyn_relocs; |
| 1202 | else |
| 1203 | { |
| 1204 | /* Track dynamic relocs needed for local syms too. |
| 1205 | We really need local syms available to do this |
| 1206 | easily. Oh well. */ |
| 1207 | |
| 1208 | asection *s; |
| 1209 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, |
| 1210 | sec, r_symndx); |
| 1211 | if (s == NULL) |
| 1212 | return FALSE; |
| 1213 | |
| 1214 | head = ((struct elf32_sparc_dyn_relocs **) |
| 1215 | &elf_section_data (s)->local_dynrel); |
| 1216 | } |
| 1217 | |
| 1218 | p = *head; |
| 1219 | if (p == NULL || p->sec != sec) |
| 1220 | { |
| 1221 | bfd_size_type amt = sizeof *p; |
| 1222 | p = ((struct elf32_sparc_dyn_relocs *) |
| 1223 | bfd_alloc (htab->elf.dynobj, amt)); |
| 1224 | if (p == NULL) |
| 1225 | return FALSE; |
| 1226 | p->next = *head; |
| 1227 | *head = p; |
| 1228 | p->sec = sec; |
| 1229 | p->count = 0; |
| 1230 | p->pc_count = 0; |
| 1231 | } |
| 1232 | |
| 1233 | p->count += 1; |
| 1234 | if (_bfd_sparc_elf_howto_table[r_type].pc_relative) |
| 1235 | p->pc_count += 1; |
| 1236 | } |
| 1237 | |
| 1238 | break; |
| 1239 | |
| 1240 | case R_SPARC_GNU_VTINHERIT: |
| 1241 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
| 1242 | return FALSE; |
| 1243 | break; |
| 1244 | |
| 1245 | case R_SPARC_GNU_VTENTRY: |
| 1246 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
| 1247 | return FALSE; |
| 1248 | break; |
| 1249 | |
| 1250 | default: |
| 1251 | break; |
| 1252 | } |
| 1253 | } |
| 1254 | |
| 1255 | return TRUE; |
| 1256 | } |
| 1257 | |
| 1258 | static asection * |
| 1259 | elf32_sparc_gc_mark_hook (sec, info, rel, h, sym) |
| 1260 | asection *sec; |
| 1261 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
| 1262 | Elf_Internal_Rela *rel; |
| 1263 | struct elf_link_hash_entry *h; |
| 1264 | Elf_Internal_Sym *sym; |
| 1265 | { |
| 1266 | if (h != NULL) |
| 1267 | { |
| 1268 | switch (ELF32_R_TYPE (rel->r_info)) |
| 1269 | { |
| 1270 | case R_SPARC_GNU_VTINHERIT: |
| 1271 | case R_SPARC_GNU_VTENTRY: |
| 1272 | break; |
| 1273 | |
| 1274 | default: |
| 1275 | switch (h->root.type) |
| 1276 | { |
| 1277 | case bfd_link_hash_defined: |
| 1278 | case bfd_link_hash_defweak: |
| 1279 | return h->root.u.def.section; |
| 1280 | |
| 1281 | case bfd_link_hash_common: |
| 1282 | return h->root.u.c.p->section; |
| 1283 | |
| 1284 | default: |
| 1285 | break; |
| 1286 | } |
| 1287 | } |
| 1288 | } |
| 1289 | else |
| 1290 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
| 1291 | |
| 1292 | return NULL; |
| 1293 | } |
| 1294 | |
| 1295 | /* Update the got entry reference counts for the section being removed. */ |
| 1296 | static bfd_boolean |
| 1297 | elf32_sparc_gc_sweep_hook (abfd, info, sec, relocs) |
| 1298 | bfd *abfd; |
| 1299 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
| 1300 | asection *sec; |
| 1301 | const Elf_Internal_Rela *relocs; |
| 1302 | { |
| 1303 | Elf_Internal_Shdr *symtab_hdr; |
| 1304 | struct elf_link_hash_entry **sym_hashes; |
| 1305 | bfd_signed_vma *local_got_refcounts; |
| 1306 | const Elf_Internal_Rela *rel, *relend; |
| 1307 | |
| 1308 | elf_section_data (sec)->local_dynrel = NULL; |
| 1309 | |
| 1310 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 1311 | sym_hashes = elf_sym_hashes (abfd); |
| 1312 | local_got_refcounts = elf_local_got_refcounts (abfd); |
| 1313 | |
| 1314 | relend = relocs + sec->reloc_count; |
| 1315 | for (rel = relocs; rel < relend; rel++) |
| 1316 | { |
| 1317 | unsigned long r_symndx; |
| 1318 | unsigned int r_type; |
| 1319 | struct elf_link_hash_entry *h = NULL; |
| 1320 | |
| 1321 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 1322 | if (r_symndx >= symtab_hdr->sh_info) |
| 1323 | { |
| 1324 | struct elf32_sparc_link_hash_entry *eh; |
| 1325 | struct elf32_sparc_dyn_relocs **pp; |
| 1326 | struct elf32_sparc_dyn_relocs *p; |
| 1327 | |
| 1328 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 1329 | eh = (struct elf32_sparc_link_hash_entry *) h; |
| 1330 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) |
| 1331 | if (p->sec == sec) |
| 1332 | { |
| 1333 | /* Everything must go for SEC. */ |
| 1334 | *pp = p->next; |
| 1335 | break; |
| 1336 | } |
| 1337 | } |
| 1338 | |
| 1339 | r_type = ELF32_R_TYPE (rel->r_info); |
| 1340 | r_type = elf32_sparc_tls_transition (info, abfd, r_type, h != NULL); |
| 1341 | switch (r_type) |
| 1342 | { |
| 1343 | case R_SPARC_TLS_LDM_HI22: |
| 1344 | case R_SPARC_TLS_LDM_LO10: |
| 1345 | if (elf32_sparc_hash_table (info)->tls_ldm_got.refcount > 0) |
| 1346 | elf32_sparc_hash_table (info)->tls_ldm_got.refcount -= 1; |
| 1347 | break; |
| 1348 | |
| 1349 | case R_SPARC_TLS_GD_HI22: |
| 1350 | case R_SPARC_TLS_GD_LO10: |
| 1351 | case R_SPARC_TLS_IE_HI22: |
| 1352 | case R_SPARC_TLS_IE_LO10: |
| 1353 | case R_SPARC_GOT10: |
| 1354 | case R_SPARC_GOT13: |
| 1355 | case R_SPARC_GOT22: |
| 1356 | if (h != NULL) |
| 1357 | { |
| 1358 | if (h->got.refcount > 0) |
| 1359 | h->got.refcount--; |
| 1360 | } |
| 1361 | else |
| 1362 | { |
| 1363 | if (local_got_refcounts[r_symndx] > 0) |
| 1364 | local_got_refcounts[r_symndx]--; |
| 1365 | } |
| 1366 | break; |
| 1367 | |
| 1368 | case R_SPARC_PC10: |
| 1369 | case R_SPARC_PC22: |
| 1370 | if (h != NULL |
| 1371 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) |
| 1372 | break; |
| 1373 | /* Fall through. */ |
| 1374 | |
| 1375 | case R_SPARC_DISP8: |
| 1376 | case R_SPARC_DISP16: |
| 1377 | case R_SPARC_DISP32: |
| 1378 | case R_SPARC_WDISP30: |
| 1379 | case R_SPARC_WDISP22: |
| 1380 | case R_SPARC_WDISP19: |
| 1381 | case R_SPARC_WDISP16: |
| 1382 | case R_SPARC_8: |
| 1383 | case R_SPARC_16: |
| 1384 | case R_SPARC_32: |
| 1385 | case R_SPARC_HI22: |
| 1386 | case R_SPARC_22: |
| 1387 | case R_SPARC_13: |
| 1388 | case R_SPARC_LO10: |
| 1389 | case R_SPARC_UA16: |
| 1390 | case R_SPARC_UA32: |
| 1391 | case R_SPARC_PLT32: |
| 1392 | if (info->shared) |
| 1393 | break; |
| 1394 | /* Fall through. */ |
| 1395 | |
| 1396 | case R_SPARC_WPLT30: |
| 1397 | if (h != NULL) |
| 1398 | { |
| 1399 | if (h->plt.refcount > 0) |
| 1400 | h->plt.refcount--; |
| 1401 | } |
| 1402 | break; |
| 1403 | |
| 1404 | default: |
| 1405 | break; |
| 1406 | } |
| 1407 | } |
| 1408 | |
| 1409 | return TRUE; |
| 1410 | } |
| 1411 | |
| 1412 | /* Adjust a symbol defined by a dynamic object and referenced by a |
| 1413 | regular object. The current definition is in some section of the |
| 1414 | dynamic object, but we're not including those sections. We have to |
| 1415 | change the definition to something the rest of the link can |
| 1416 | understand. */ |
| 1417 | |
| 1418 | static bfd_boolean |
| 1419 | elf32_sparc_adjust_dynamic_symbol (info, h) |
| 1420 | struct bfd_link_info *info; |
| 1421 | struct elf_link_hash_entry *h; |
| 1422 | { |
| 1423 | struct elf32_sparc_link_hash_table *htab; |
| 1424 | struct elf32_sparc_link_hash_entry * eh; |
| 1425 | struct elf32_sparc_dyn_relocs *p; |
| 1426 | asection *s; |
| 1427 | unsigned int power_of_two; |
| 1428 | |
| 1429 | htab = elf32_sparc_hash_table (info); |
| 1430 | |
| 1431 | /* Make sure we know what is going on here. */ |
| 1432 | BFD_ASSERT (htab->elf.dynobj != NULL |
| 1433 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) |
| 1434 | || h->weakdef != NULL |
| 1435 | || ((h->elf_link_hash_flags |
| 1436 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 |
| 1437 | && (h->elf_link_hash_flags |
| 1438 | & ELF_LINK_HASH_REF_REGULAR) != 0 |
| 1439 | && (h->elf_link_hash_flags |
| 1440 | & ELF_LINK_HASH_DEF_REGULAR) == 0))); |
| 1441 | |
| 1442 | /* If this is a function, put it in the procedure linkage table. We |
| 1443 | will fill in the contents of the procedure linkage table later |
| 1444 | (although we could actually do it here). The STT_NOTYPE |
| 1445 | condition is a hack specifically for the Oracle libraries |
| 1446 | delivered for Solaris; for some inexplicable reason, they define |
| 1447 | some of their functions as STT_NOTYPE when they really should be |
| 1448 | STT_FUNC. */ |
| 1449 | if (h->type == STT_FUNC |
| 1450 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0 |
| 1451 | || (h->type == STT_NOTYPE |
| 1452 | && (h->root.type == bfd_link_hash_defined |
| 1453 | || h->root.type == bfd_link_hash_defweak) |
| 1454 | && (h->root.u.def.section->flags & SEC_CODE) != 0)) |
| 1455 | { |
| 1456 | if (h->plt.refcount <= 0 |
| 1457 | || (! info->shared |
| 1458 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0 |
| 1459 | && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0 |
| 1460 | && h->root.type != bfd_link_hash_undefweak |
| 1461 | && h->root.type != bfd_link_hash_undefined)) |
| 1462 | { |
| 1463 | /* This case can occur if we saw a WPLT30 reloc in an input |
| 1464 | file, but the symbol was never referred to by a dynamic |
| 1465 | object, or if all references were garbage collected. In |
| 1466 | such a case, we don't actually need to build a procedure |
| 1467 | linkage table, and we can just do a WDISP30 reloc instead. */ |
| 1468 | h->plt.offset = (bfd_vma) -1; |
| 1469 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
| 1470 | } |
| 1471 | |
| 1472 | return TRUE; |
| 1473 | } |
| 1474 | else |
| 1475 | h->plt.offset = (bfd_vma) -1; |
| 1476 | |
| 1477 | /* If this is a weak symbol, and there is a real definition, the |
| 1478 | processor independent code will have arranged for us to see the |
| 1479 | real definition first, and we can just use the same value. */ |
| 1480 | if (h->weakdef != NULL) |
| 1481 | { |
| 1482 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined |
| 1483 | || h->weakdef->root.type == bfd_link_hash_defweak); |
| 1484 | h->root.u.def.section = h->weakdef->root.u.def.section; |
| 1485 | h->root.u.def.value = h->weakdef->root.u.def.value; |
| 1486 | return TRUE; |
| 1487 | } |
| 1488 | |
| 1489 | /* This is a reference to a symbol defined by a dynamic object which |
| 1490 | is not a function. */ |
| 1491 | |
| 1492 | /* If we are creating a shared library, we must presume that the |
| 1493 | only references to the symbol are via the global offset table. |
| 1494 | For such cases we need not do anything here; the relocations will |
| 1495 | be handled correctly by relocate_section. */ |
| 1496 | if (info->shared) |
| 1497 | return TRUE; |
| 1498 | |
| 1499 | /* If there are no references to this symbol that do not use the |
| 1500 | GOT, we don't need to generate a copy reloc. */ |
| 1501 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) |
| 1502 | return TRUE; |
| 1503 | |
| 1504 | eh = (struct elf32_sparc_link_hash_entry *) h; |
| 1505 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
| 1506 | { |
| 1507 | s = p->sec->output_section; |
| 1508 | if (s != NULL && (s->flags & SEC_READONLY) != 0) |
| 1509 | break; |
| 1510 | } |
| 1511 | |
| 1512 | /* If we didn't find any dynamic relocs in read-only sections, then |
| 1513 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
| 1514 | if (p == NULL) |
| 1515 | { |
| 1516 | h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; |
| 1517 | return TRUE; |
| 1518 | } |
| 1519 | |
| 1520 | /* We must allocate the symbol in our .dynbss section, which will |
| 1521 | become part of the .bss section of the executable. There will be |
| 1522 | an entry for this symbol in the .dynsym section. The dynamic |
| 1523 | object will contain position independent code, so all references |
| 1524 | from the dynamic object to this symbol will go through the global |
| 1525 | offset table. The dynamic linker will use the .dynsym entry to |
| 1526 | determine the address it must put in the global offset table, so |
| 1527 | both the dynamic object and the regular object will refer to the |
| 1528 | same memory location for the variable. */ |
| 1529 | |
| 1530 | /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker |
| 1531 | to copy the initial value out of the dynamic object and into the |
| 1532 | runtime process image. We need to remember the offset into the |
| 1533 | .rel.bss section we are going to use. */ |
| 1534 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
| 1535 | { |
| 1536 | htab->srelbss->_raw_size += sizeof (Elf32_External_Rela); |
| 1537 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; |
| 1538 | } |
| 1539 | |
| 1540 | /* We need to figure out the alignment required for this symbol. I |
| 1541 | have no idea how ELF linkers handle this. */ |
| 1542 | power_of_two = bfd_log2 (h->size); |
| 1543 | if (power_of_two > 3) |
| 1544 | power_of_two = 3; |
| 1545 | |
| 1546 | /* Apply the required alignment. */ |
| 1547 | s = htab->sdynbss; |
| 1548 | s->_raw_size = BFD_ALIGN (s->_raw_size, |
| 1549 | (bfd_size_type) (1 << power_of_two)); |
| 1550 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) |
| 1551 | { |
| 1552 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) |
| 1553 | return FALSE; |
| 1554 | } |
| 1555 | |
| 1556 | /* Define the symbol as being at this point in the section. */ |
| 1557 | h->root.u.def.section = s; |
| 1558 | h->root.u.def.value = s->_raw_size; |
| 1559 | |
| 1560 | /* Increment the section size to make room for the symbol. */ |
| 1561 | s->_raw_size += h->size; |
| 1562 | |
| 1563 | return TRUE; |
| 1564 | } |
| 1565 | |
| 1566 | /* This is the condition under which finish_dynamic_symbol will be called |
| 1567 | from elflink.h. If elflink.h doesn't call our finish_dynamic_symbol |
| 1568 | routine, we'll need to do something about initializing any .plt and .got |
| 1569 | entries in relocate_section. */ |
| 1570 | #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \ |
| 1571 | ((DYN) \ |
| 1572 | && ((INFO)->shared \ |
| 1573 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \ |
| 1574 | && ((H)->dynindx != -1 \ |
| 1575 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)) |
| 1576 | |
| 1577 | /* Allocate space in .plt, .got and associated reloc sections for |
| 1578 | dynamic relocs. */ |
| 1579 | |
| 1580 | static bfd_boolean |
| 1581 | allocate_dynrelocs (h, inf) |
| 1582 | struct elf_link_hash_entry *h; |
| 1583 | PTR inf; |
| 1584 | { |
| 1585 | struct bfd_link_info *info; |
| 1586 | struct elf32_sparc_link_hash_table *htab; |
| 1587 | struct elf32_sparc_link_hash_entry *eh; |
| 1588 | struct elf32_sparc_dyn_relocs *p; |
| 1589 | |
| 1590 | if (h->root.type == bfd_link_hash_indirect) |
| 1591 | return TRUE; |
| 1592 | |
| 1593 | if (h->root.type == bfd_link_hash_warning) |
| 1594 | /* When warning symbols are created, they **replace** the "real" |
| 1595 | entry in the hash table, thus we never get to see the real |
| 1596 | symbol in a hash traversal. So look at it now. */ |
| 1597 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 1598 | |
| 1599 | info = (struct bfd_link_info *) inf; |
| 1600 | htab = elf32_sparc_hash_table (info); |
| 1601 | |
| 1602 | if (htab->elf.dynamic_sections_created |
| 1603 | && h->plt.refcount > 0) |
| 1604 | { |
| 1605 | /* Make sure this symbol is output as a dynamic symbol. |
| 1606 | Undefined weak syms won't yet be marked as dynamic. */ |
| 1607 | if (h->dynindx == -1 |
| 1608 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) |
| 1609 | { |
| 1610 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) |
| 1611 | return FALSE; |
| 1612 | } |
| 1613 | |
| 1614 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h)) |
| 1615 | { |
| 1616 | asection *s = htab->splt; |
| 1617 | |
| 1618 | /* The first four entries in .plt are reserved. */ |
| 1619 | if (s->_raw_size == 0) |
| 1620 | s->_raw_size = 4 * PLT_ENTRY_SIZE; |
| 1621 | |
| 1622 | /* The procedure linkage table has a maximum size. */ |
| 1623 | if (s->_raw_size >= 0x400000) |
| 1624 | { |
| 1625 | bfd_set_error (bfd_error_bad_value); |
| 1626 | return FALSE; |
| 1627 | } |
| 1628 | |
| 1629 | h->plt.offset = s->_raw_size; |
| 1630 | |
| 1631 | /* If this symbol is not defined in a regular file, and we are |
| 1632 | not generating a shared library, then set the symbol to this |
| 1633 | location in the .plt. This is required to make function |
| 1634 | pointers compare as equal between the normal executable and |
| 1635 | the shared library. */ |
| 1636 | if (! info->shared |
| 1637 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) |
| 1638 | { |
| 1639 | h->root.u.def.section = s; |
| 1640 | h->root.u.def.value = h->plt.offset; |
| 1641 | } |
| 1642 | |
| 1643 | /* Make room for this entry. */ |
| 1644 | s->_raw_size += PLT_ENTRY_SIZE; |
| 1645 | |
| 1646 | /* We also need to make an entry in the .rela.plt section. */ |
| 1647 | htab->srelplt->_raw_size += sizeof (Elf32_External_Rela); |
| 1648 | } |
| 1649 | else |
| 1650 | { |
| 1651 | h->plt.offset = (bfd_vma) -1; |
| 1652 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
| 1653 | } |
| 1654 | } |
| 1655 | else |
| 1656 | { |
| 1657 | h->plt.offset = (bfd_vma) -1; |
| 1658 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
| 1659 | } |
| 1660 | |
| 1661 | /* If R_SPARC_TLS_IE_{HI22,LO10} symbol is now local to the binary, |
| 1662 | make it a R_SPARC_TLS_LE_{HI22,LO10} requiring no TLS entry. */ |
| 1663 | if (h->got.refcount > 0 |
| 1664 | && !info->shared |
| 1665 | && h->dynindx == -1 |
| 1666 | && elf32_sparc_hash_entry(h)->tls_type == GOT_TLS_IE) |
| 1667 | h->got.offset = (bfd_vma) -1; |
| 1668 | else if (h->got.refcount > 0) |
| 1669 | { |
| 1670 | asection *s; |
| 1671 | bfd_boolean dyn; |
| 1672 | int tls_type = elf32_sparc_hash_entry(h)->tls_type; |
| 1673 | |
| 1674 | /* Make sure this symbol is output as a dynamic symbol. |
| 1675 | Undefined weak syms won't yet be marked as dynamic. */ |
| 1676 | if (h->dynindx == -1 |
| 1677 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) |
| 1678 | { |
| 1679 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) |
| 1680 | return FALSE; |
| 1681 | } |
| 1682 | |
| 1683 | s = htab->sgot; |
| 1684 | h->got.offset = s->_raw_size; |
| 1685 | s->_raw_size += 4; |
| 1686 | /* R_SPARC_TLS_GD_HI{22,LO10} needs 2 consecutive GOT slots. */ |
| 1687 | if (tls_type == GOT_TLS_GD) |
| 1688 | s->_raw_size += 4; |
| 1689 | dyn = htab->elf.dynamic_sections_created; |
| 1690 | /* R_SPARC_TLS_IE_{HI22,LO10} needs one dynamic relocation, |
| 1691 | R_SPARC_TLS_GD_{HI22,LO10} needs one if local symbol and two if |
| 1692 | global. */ |
| 1693 | if ((tls_type == GOT_TLS_GD && h->dynindx == -1) |
| 1694 | || tls_type == GOT_TLS_IE) |
| 1695 | htab->srelgot->_raw_size += sizeof (Elf32_External_Rela); |
| 1696 | else if (tls_type == GOT_TLS_GD) |
| 1697 | htab->srelgot->_raw_size += 2 * sizeof (Elf32_External_Rela); |
| 1698 | else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)) |
| 1699 | htab->srelgot->_raw_size += sizeof (Elf32_External_Rela); |
| 1700 | } |
| 1701 | else |
| 1702 | h->got.offset = (bfd_vma) -1; |
| 1703 | |
| 1704 | eh = (struct elf32_sparc_link_hash_entry *) h; |
| 1705 | if (eh->dyn_relocs == NULL) |
| 1706 | return TRUE; |
| 1707 | |
| 1708 | /* In the shared -Bsymbolic case, discard space allocated for |
| 1709 | dynamic pc-relative relocs against symbols which turn out to be |
| 1710 | defined in regular objects. For the normal shared case, discard |
| 1711 | space for pc-relative relocs that have become local due to symbol |
| 1712 | visibility changes. */ |
| 1713 | |
| 1714 | if (info->shared) |
| 1715 | { |
| 1716 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 |
| 1717 | && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0 |
| 1718 | || info->symbolic)) |
| 1719 | { |
| 1720 | struct elf32_sparc_dyn_relocs **pp; |
| 1721 | |
| 1722 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
| 1723 | { |
| 1724 | p->count -= p->pc_count; |
| 1725 | p->pc_count = 0; |
| 1726 | if (p->count == 0) |
| 1727 | *pp = p->next; |
| 1728 | else |
| 1729 | pp = &p->next; |
| 1730 | } |
| 1731 | } |
| 1732 | } |
| 1733 | else |
| 1734 | { |
| 1735 | /* For the non-shared case, discard space for relocs against |
| 1736 | symbols which turn out to need copy relocs or are not |
| 1737 | dynamic. */ |
| 1738 | |
| 1739 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 |
| 1740 | && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 |
| 1741 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) |
| 1742 | || (htab->elf.dynamic_sections_created |
| 1743 | && (h->root.type == bfd_link_hash_undefweak |
| 1744 | || h->root.type == bfd_link_hash_undefined)))) |
| 1745 | { |
| 1746 | /* Make sure this symbol is output as a dynamic symbol. |
| 1747 | Undefined weak syms won't yet be marked as dynamic. */ |
| 1748 | if (h->dynindx == -1 |
| 1749 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) |
| 1750 | { |
| 1751 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) |
| 1752 | return FALSE; |
| 1753 | } |
| 1754 | |
| 1755 | /* If that succeeded, we know we'll be keeping all the |
| 1756 | relocs. */ |
| 1757 | if (h->dynindx != -1) |
| 1758 | goto keep; |
| 1759 | } |
| 1760 | |
| 1761 | eh->dyn_relocs = NULL; |
| 1762 | |
| 1763 | keep: ; |
| 1764 | } |
| 1765 | |
| 1766 | /* Finally, allocate space. */ |
| 1767 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
| 1768 | { |
| 1769 | asection *sreloc = elf_section_data (p->sec)->sreloc; |
| 1770 | sreloc->_raw_size += p->count * sizeof (Elf32_External_Rela); |
| 1771 | } |
| 1772 | |
| 1773 | return TRUE; |
| 1774 | } |
| 1775 | |
| 1776 | /* Find any dynamic relocs that apply to read-only sections. */ |
| 1777 | |
| 1778 | static bfd_boolean |
| 1779 | readonly_dynrelocs (h, inf) |
| 1780 | struct elf_link_hash_entry *h; |
| 1781 | PTR inf; |
| 1782 | { |
| 1783 | struct elf32_sparc_link_hash_entry *eh; |
| 1784 | struct elf32_sparc_dyn_relocs *p; |
| 1785 | |
| 1786 | if (h->root.type == bfd_link_hash_warning) |
| 1787 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 1788 | |
| 1789 | eh = (struct elf32_sparc_link_hash_entry *) h; |
| 1790 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
| 1791 | { |
| 1792 | asection *s = p->sec->output_section; |
| 1793 | |
| 1794 | if (s != NULL && (s->flags & SEC_READONLY) != 0) |
| 1795 | { |
| 1796 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
| 1797 | |
| 1798 | info->flags |= DF_TEXTREL; |
| 1799 | |
| 1800 | /* Not an error, just cut short the traversal. */ |
| 1801 | return FALSE; |
| 1802 | } |
| 1803 | } |
| 1804 | return TRUE; |
| 1805 | } |
| 1806 | |
| 1807 | /* Set the sizes of the dynamic sections. */ |
| 1808 | |
| 1809 | static bfd_boolean |
| 1810 | elf32_sparc_size_dynamic_sections (output_bfd, info) |
| 1811 | bfd *output_bfd ATTRIBUTE_UNUSED; |
| 1812 | struct bfd_link_info *info; |
| 1813 | { |
| 1814 | struct elf32_sparc_link_hash_table *htab; |
| 1815 | bfd *dynobj; |
| 1816 | asection *s; |
| 1817 | bfd *ibfd; |
| 1818 | |
| 1819 | htab = elf32_sparc_hash_table (info); |
| 1820 | dynobj = htab->elf.dynobj; |
| 1821 | BFD_ASSERT (dynobj != NULL); |
| 1822 | |
| 1823 | if (elf_hash_table (info)->dynamic_sections_created) |
| 1824 | { |
| 1825 | /* Set the contents of the .interp section to the interpreter. */ |
| 1826 | if (info->executable) |
| 1827 | { |
| 1828 | s = bfd_get_section_by_name (dynobj, ".interp"); |
| 1829 | BFD_ASSERT (s != NULL); |
| 1830 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; |
| 1831 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
| 1832 | } |
| 1833 | } |
| 1834 | |
| 1835 | /* Set up .got offsets for local syms, and space for local dynamic |
| 1836 | relocs. */ |
| 1837 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
| 1838 | { |
| 1839 | bfd_signed_vma *local_got; |
| 1840 | bfd_signed_vma *end_local_got; |
| 1841 | char *local_tls_type; |
| 1842 | bfd_size_type locsymcount; |
| 1843 | Elf_Internal_Shdr *symtab_hdr; |
| 1844 | asection *srel; |
| 1845 | |
| 1846 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) |
| 1847 | continue; |
| 1848 | |
| 1849 | for (s = ibfd->sections; s != NULL; s = s->next) |
| 1850 | { |
| 1851 | struct elf32_sparc_dyn_relocs *p; |
| 1852 | |
| 1853 | for (p = *((struct elf32_sparc_dyn_relocs **) |
| 1854 | &elf_section_data (s)->local_dynrel); |
| 1855 | p != NULL; |
| 1856 | p = p->next) |
| 1857 | { |
| 1858 | if (!bfd_is_abs_section (p->sec) |
| 1859 | && bfd_is_abs_section (p->sec->output_section)) |
| 1860 | { |
| 1861 | /* Input section has been discarded, either because |
| 1862 | it is a copy of a linkonce section or due to |
| 1863 | linker script /DISCARD/, so we'll be discarding |
| 1864 | the relocs too. */ |
| 1865 | } |
| 1866 | else if (p->count != 0) |
| 1867 | { |
| 1868 | srel = elf_section_data (p->sec)->sreloc; |
| 1869 | srel->_raw_size += p->count * sizeof (Elf32_External_Rela); |
| 1870 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
| 1871 | info->flags |= DF_TEXTREL; |
| 1872 | } |
| 1873 | } |
| 1874 | } |
| 1875 | |
| 1876 | local_got = elf_local_got_refcounts (ibfd); |
| 1877 | if (!local_got) |
| 1878 | continue; |
| 1879 | |
| 1880 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
| 1881 | locsymcount = symtab_hdr->sh_info; |
| 1882 | end_local_got = local_got + locsymcount; |
| 1883 | local_tls_type = elf32_sparc_local_got_tls_type (ibfd); |
| 1884 | s = htab->sgot; |
| 1885 | srel = htab->srelgot; |
| 1886 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) |
| 1887 | { |
| 1888 | if (*local_got > 0) |
| 1889 | { |
| 1890 | *local_got = s->_raw_size; |
| 1891 | s->_raw_size += 4; |
| 1892 | if (*local_tls_type == GOT_TLS_GD) |
| 1893 | s->_raw_size += 4; |
| 1894 | if (info->shared |
| 1895 | || *local_tls_type == GOT_TLS_GD |
| 1896 | || *local_tls_type == GOT_TLS_IE) |
| 1897 | srel->_raw_size += sizeof (Elf32_External_Rela); |
| 1898 | } |
| 1899 | else |
| 1900 | *local_got = (bfd_vma) -1; |
| 1901 | } |
| 1902 | } |
| 1903 | |
| 1904 | if (htab->tls_ldm_got.refcount > 0) |
| 1905 | { |
| 1906 | /* Allocate 2 got entries and 1 dynamic reloc for |
| 1907 | R_SPARC_TLS_LDM_{HI22,LO10} relocs. */ |
| 1908 | htab->tls_ldm_got.offset = htab->sgot->_raw_size; |
| 1909 | htab->sgot->_raw_size += 8; |
| 1910 | htab->srelgot->_raw_size += sizeof (Elf32_External_Rela); |
| 1911 | } |
| 1912 | else |
| 1913 | htab->tls_ldm_got.offset = -1; |
| 1914 | |
| 1915 | /* Allocate global sym .plt and .got entries, and space for global |
| 1916 | sym dynamic relocs. */ |
| 1917 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info); |
| 1918 | |
| 1919 | if (elf_hash_table (info)->dynamic_sections_created) |
| 1920 | { |
| 1921 | /* Make space for the trailing nop in .plt. */ |
| 1922 | if (htab->splt->_raw_size > 0) |
| 1923 | htab->splt->_raw_size += 4; |
| 1924 | |
| 1925 | /* If the .got section is more than 0x1000 bytes, we add |
| 1926 | 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13 |
| 1927 | bit relocations have a greater chance of working. */ |
| 1928 | if (htab->sgot->_raw_size >= 0x1000 |
| 1929 | && elf_hash_table (info)->hgot->root.u.def.value == 0) |
| 1930 | elf_hash_table (info)->hgot->root.u.def.value = 0x1000; |
| 1931 | } |
| 1932 | |
| 1933 | /* The check_relocs and adjust_dynamic_symbol entry points have |
| 1934 | determined the sizes of the various dynamic sections. Allocate |
| 1935 | memory for them. */ |
| 1936 | for (s = dynobj->sections; s != NULL; s = s->next) |
| 1937 | { |
| 1938 | const char *name; |
| 1939 | bfd_boolean strip = FALSE; |
| 1940 | |
| 1941 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
| 1942 | continue; |
| 1943 | |
| 1944 | /* It's OK to base decisions on the section name, because none |
| 1945 | of the dynobj section names depend upon the input files. */ |
| 1946 | name = bfd_get_section_name (dynobj, s); |
| 1947 | |
| 1948 | if (strncmp (name, ".rela", 5) == 0) |
| 1949 | { |
| 1950 | if (s->_raw_size == 0) |
| 1951 | { |
| 1952 | /* If we don't need this section, strip it from the |
| 1953 | output file. This is to handle .rela.bss and |
| 1954 | .rel.plt. We must create it in |
| 1955 | create_dynamic_sections, because it must be created |
| 1956 | before the linker maps input sections to output |
| 1957 | sections. The linker does that before |
| 1958 | adjust_dynamic_symbol is called, and it is that |
| 1959 | function which decides whether anything needs to go |
| 1960 | into these sections. */ |
| 1961 | strip = TRUE; |
| 1962 | } |
| 1963 | else |
| 1964 | { |
| 1965 | /* We use the reloc_count field as a counter if we need |
| 1966 | to copy relocs into the output file. */ |
| 1967 | s->reloc_count = 0; |
| 1968 | } |
| 1969 | } |
| 1970 | else if (s != htab->splt && s != htab->sgot) |
| 1971 | { |
| 1972 | /* It's not one of our sections, so don't allocate space. */ |
| 1973 | continue; |
| 1974 | } |
| 1975 | |
| 1976 | if (strip) |
| 1977 | { |
| 1978 | _bfd_strip_section_from_output (info, s); |
| 1979 | continue; |
| 1980 | } |
| 1981 | |
| 1982 | /* Allocate memory for the section contents. */ |
| 1983 | /* FIXME: This should be a call to bfd_alloc not bfd_zalloc. |
| 1984 | Unused entries should be reclaimed before the section's contents |
| 1985 | are written out, but at the moment this does not happen. Thus in |
| 1986 | order to prevent writing out garbage, we initialise the section's |
| 1987 | contents to zero. */ |
| 1988 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); |
| 1989 | if (s->contents == NULL && s->_raw_size != 0) |
| 1990 | return FALSE; |
| 1991 | } |
| 1992 | |
| 1993 | if (elf_hash_table (info)->dynamic_sections_created) |
| 1994 | { |
| 1995 | /* Add some entries to the .dynamic section. We fill in the |
| 1996 | values later, in elf32_sparc_finish_dynamic_sections, but we |
| 1997 | must add the entries now so that we get the correct size for |
| 1998 | the .dynamic section. The DT_DEBUG entry is filled in by the |
| 1999 | dynamic linker and used by the debugger. */ |
| 2000 | #define add_dynamic_entry(TAG, VAL) \ |
| 2001 | bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL)) |
| 2002 | |
| 2003 | if (info->executable) |
| 2004 | { |
| 2005 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
| 2006 | return FALSE; |
| 2007 | } |
| 2008 | |
| 2009 | if (htab->srelplt->_raw_size != 0) |
| 2010 | { |
| 2011 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
| 2012 | || !add_dynamic_entry (DT_PLTRELSZ, 0) |
| 2013 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) |
| 2014 | || !add_dynamic_entry (DT_JMPREL, 0)) |
| 2015 | return FALSE; |
| 2016 | } |
| 2017 | |
| 2018 | if (!add_dynamic_entry (DT_RELA, 0) |
| 2019 | || !add_dynamic_entry (DT_RELASZ, 0) |
| 2020 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) |
| 2021 | return FALSE; |
| 2022 | |
| 2023 | /* If any dynamic relocs apply to a read-only section, |
| 2024 | then we need a DT_TEXTREL entry. */ |
| 2025 | if ((info->flags & DF_TEXTREL) == 0) |
| 2026 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, |
| 2027 | (PTR) info); |
| 2028 | |
| 2029 | if (info->flags & DF_TEXTREL) |
| 2030 | { |
| 2031 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
| 2032 | return FALSE; |
| 2033 | } |
| 2034 | } |
| 2035 | #undef add_dynamic_entry |
| 2036 | |
| 2037 | return TRUE; |
| 2038 | } |
| 2039 | |
| 2040 | struct elf32_sparc_section_data |
| 2041 | { |
| 2042 | struct bfd_elf_section_data elf; |
| 2043 | unsigned int do_relax; |
| 2044 | }; |
| 2045 | |
| 2046 | #define sec_do_relax(sec) \ |
| 2047 | ((struct elf32_sparc_section_data *) elf_section_data (sec))->do_relax |
| 2048 | |
| 2049 | static bfd_boolean |
| 2050 | elf32_sparc_new_section_hook (abfd, sec) |
| 2051 | bfd *abfd; |
| 2052 | asection *sec; |
| 2053 | { |
| 2054 | struct elf32_sparc_section_data *sdata; |
| 2055 | bfd_size_type amt = sizeof (*sdata); |
| 2056 | |
| 2057 | sdata = (struct elf32_sparc_section_data *) bfd_zalloc (abfd, amt); |
| 2058 | if (sdata == NULL) |
| 2059 | return FALSE; |
| 2060 | sec->used_by_bfd = (PTR) sdata; |
| 2061 | |
| 2062 | return _bfd_elf_new_section_hook (abfd, sec); |
| 2063 | } |
| 2064 | |
| 2065 | static bfd_boolean |
| 2066 | elf32_sparc_relax_section (abfd, section, link_info, again) |
| 2067 | bfd *abfd ATTRIBUTE_UNUSED; |
| 2068 | asection *section ATTRIBUTE_UNUSED; |
| 2069 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED; |
| 2070 | bfd_boolean *again; |
| 2071 | { |
| 2072 | *again = FALSE; |
| 2073 | sec_do_relax (section) = 1; |
| 2074 | return TRUE; |
| 2075 | } |
| 2076 | |
| 2077 | /* Return the base VMA address which should be subtracted from real addresses |
| 2078 | when resolving @dtpoff relocation. |
| 2079 | This is PT_TLS segment p_vaddr. */ |
| 2080 | |
| 2081 | static bfd_vma |
| 2082 | dtpoff_base (info) |
| 2083 | struct bfd_link_info *info; |
| 2084 | { |
| 2085 | /* If tls_segment is NULL, we should have signalled an error already. */ |
| 2086 | if (elf_hash_table (info)->tls_segment == NULL) |
| 2087 | return 0; |
| 2088 | return elf_hash_table (info)->tls_segment->start; |
| 2089 | } |
| 2090 | |
| 2091 | /* Return the relocation value for @tpoff relocation |
| 2092 | if STT_TLS virtual address is ADDRESS. */ |
| 2093 | |
| 2094 | static bfd_vma |
| 2095 | tpoff (info, address) |
| 2096 | struct bfd_link_info *info; |
| 2097 | bfd_vma address; |
| 2098 | { |
| 2099 | struct elf_link_tls_segment *tls_segment |
| 2100 | = elf_hash_table (info)->tls_segment; |
| 2101 | |
| 2102 | /* If tls_segment is NULL, we should have signalled an error already. */ |
| 2103 | if (tls_segment == NULL) |
| 2104 | return 0; |
| 2105 | return -(align_power (tls_segment->size, tls_segment->align) |
| 2106 | + tls_segment->start - address); |
| 2107 | } |
| 2108 | |
| 2109 | /* Relocate a SPARC ELF section. */ |
| 2110 | |
| 2111 | static bfd_boolean |
| 2112 | elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section, |
| 2113 | contents, relocs, local_syms, local_sections) |
| 2114 | bfd *output_bfd; |
| 2115 | struct bfd_link_info *info; |
| 2116 | bfd *input_bfd; |
| 2117 | asection *input_section; |
| 2118 | bfd_byte *contents; |
| 2119 | Elf_Internal_Rela *relocs; |
| 2120 | Elf_Internal_Sym *local_syms; |
| 2121 | asection **local_sections; |
| 2122 | { |
| 2123 | struct elf32_sparc_link_hash_table *htab; |
| 2124 | Elf_Internal_Shdr *symtab_hdr; |
| 2125 | struct elf_link_hash_entry **sym_hashes; |
| 2126 | bfd_vma *local_got_offsets; |
| 2127 | bfd_vma got_base; |
| 2128 | asection *sreloc; |
| 2129 | Elf_Internal_Rela *rel; |
| 2130 | Elf_Internal_Rela *relend; |
| 2131 | |
| 2132 | if (info->relocatable) |
| 2133 | return TRUE; |
| 2134 | |
| 2135 | htab = elf32_sparc_hash_table (info); |
| 2136 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| 2137 | sym_hashes = elf_sym_hashes (input_bfd); |
| 2138 | local_got_offsets = elf_local_got_offsets (input_bfd); |
| 2139 | |
| 2140 | if (elf_hash_table (info)->hgot == NULL) |
| 2141 | got_base = 0; |
| 2142 | else |
| 2143 | got_base = elf_hash_table (info)->hgot->root.u.def.value; |
| 2144 | |
| 2145 | sreloc = elf_section_data (input_section)->sreloc; |
| 2146 | |
| 2147 | rel = relocs; |
| 2148 | relend = relocs + input_section->reloc_count; |
| 2149 | for (; rel < relend; rel++) |
| 2150 | { |
| 2151 | int r_type, tls_type; |
| 2152 | reloc_howto_type *howto; |
| 2153 | unsigned long r_symndx; |
| 2154 | struct elf_link_hash_entry *h; |
| 2155 | Elf_Internal_Sym *sym; |
| 2156 | asection *sec; |
| 2157 | bfd_vma relocation, off; |
| 2158 | bfd_reloc_status_type r; |
| 2159 | bfd_boolean is_plt = FALSE; |
| 2160 | bfd_boolean unresolved_reloc; |
| 2161 | |
| 2162 | r_type = ELF32_R_TYPE (rel->r_info); |
| 2163 | |
| 2164 | if (r_type == R_SPARC_GNU_VTINHERIT |
| 2165 | || r_type == R_SPARC_GNU_VTENTRY) |
| 2166 | continue; |
| 2167 | |
| 2168 | if (r_type < 0 || r_type >= (int) R_SPARC_max_std) |
| 2169 | { |
| 2170 | bfd_set_error (bfd_error_bad_value); |
| 2171 | return FALSE; |
| 2172 | } |
| 2173 | howto = _bfd_sparc_elf_howto_table + r_type; |
| 2174 | |
| 2175 | /* This is a final link. */ |
| 2176 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 2177 | h = NULL; |
| 2178 | sym = NULL; |
| 2179 | sec = NULL; |
| 2180 | unresolved_reloc = FALSE; |
| 2181 | if (r_symndx < symtab_hdr->sh_info) |
| 2182 | { |
| 2183 | sym = local_syms + r_symndx; |
| 2184 | sec = local_sections[r_symndx]; |
| 2185 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel); |
| 2186 | } |
| 2187 | else |
| 2188 | { |
| 2189 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 2190 | while (h->root.type == bfd_link_hash_indirect |
| 2191 | || h->root.type == bfd_link_hash_warning) |
| 2192 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 2193 | |
| 2194 | relocation = 0; |
| 2195 | if (h->root.type == bfd_link_hash_defined |
| 2196 | || h->root.type == bfd_link_hash_defweak) |
| 2197 | { |
| 2198 | sec = h->root.u.def.section; |
| 2199 | if (sec->output_section == NULL) |
| 2200 | /* Set a flag that will be cleared later if we find a |
| 2201 | relocation value for this symbol. output_section |
| 2202 | is typically NULL for symbols satisfied by a shared |
| 2203 | library. */ |
| 2204 | unresolved_reloc = TRUE; |
| 2205 | else |
| 2206 | relocation = (h->root.u.def.value |
| 2207 | + sec->output_section->vma |
| 2208 | + sec->output_offset); |
| 2209 | } |
| 2210 | else if (h->root.type == bfd_link_hash_undefweak) |
| 2211 | ; |
| 2212 | else if (!info->executable |
| 2213 | && !info->no_undefined |
| 2214 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) |
| 2215 | ; |
| 2216 | else |
| 2217 | { |
| 2218 | if (! ((*info->callbacks->undefined_symbol) |
| 2219 | (info, h->root.root.string, input_bfd, |
| 2220 | input_section, rel->r_offset, |
| 2221 | (!info->shared || info->no_undefined |
| 2222 | || ELF_ST_VISIBILITY (h->other))))) |
| 2223 | return FALSE; |
| 2224 | } |
| 2225 | } |
| 2226 | |
| 2227 | switch (r_type) |
| 2228 | { |
| 2229 | case R_SPARC_GOT10: |
| 2230 | case R_SPARC_GOT13: |
| 2231 | case R_SPARC_GOT22: |
| 2232 | /* Relocation is to the entry for this symbol in the global |
| 2233 | offset table. */ |
| 2234 | if (htab->sgot == NULL) |
| 2235 | abort (); |
| 2236 | |
| 2237 | if (h != NULL) |
| 2238 | { |
| 2239 | bfd_boolean dyn; |
| 2240 | |
| 2241 | off = h->got.offset; |
| 2242 | BFD_ASSERT (off != (bfd_vma) -1); |
| 2243 | dyn = elf_hash_table (info)->dynamic_sections_created; |
| 2244 | |
| 2245 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h) |
| 2246 | || (info->shared |
| 2247 | && (info->symbolic |
| 2248 | || h->dynindx == -1 |
| 2249 | || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)) |
| 2250 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) |
| 2251 | { |
| 2252 | /* This is actually a static link, or it is a |
| 2253 | -Bsymbolic link and the symbol is defined |
| 2254 | locally, or the symbol was forced to be local |
| 2255 | because of a version file. We must initialize |
| 2256 | this entry in the global offset table. Since the |
| 2257 | offset must always be a multiple of 4, we use the |
| 2258 | least significant bit to record whether we have |
| 2259 | initialized it already. |
| 2260 | |
| 2261 | When doing a dynamic link, we create a .rela.got |
| 2262 | relocation entry to initialize the value. This |
| 2263 | is done in the finish_dynamic_symbol routine. */ |
| 2264 | if ((off & 1) != 0) |
| 2265 | off &= ~1; |
| 2266 | else |
| 2267 | { |
| 2268 | bfd_put_32 (output_bfd, relocation, |
| 2269 | htab->sgot->contents + off); |
| 2270 | h->got.offset |= 1; |
| 2271 | } |
| 2272 | } |
| 2273 | else |
| 2274 | unresolved_reloc = FALSE; |
| 2275 | } |
| 2276 | else |
| 2277 | { |
| 2278 | BFD_ASSERT (local_got_offsets != NULL |
| 2279 | && local_got_offsets[r_symndx] != (bfd_vma) -1); |
| 2280 | |
| 2281 | off = local_got_offsets[r_symndx]; |
| 2282 | |
| 2283 | /* The offset must always be a multiple of 4. We use |
| 2284 | the least significant bit to record whether we have |
| 2285 | already processed this entry. */ |
| 2286 | if ((off & 1) != 0) |
| 2287 | off &= ~1; |
| 2288 | else |
| 2289 | { |
| 2290 | |
| 2291 | if (info->shared) |
| 2292 | { |
| 2293 | asection *s; |
| 2294 | Elf_Internal_Rela outrel; |
| 2295 | bfd_byte *loc; |
| 2296 | |
| 2297 | /* We need to generate a R_SPARC_RELATIVE reloc |
| 2298 | for the dynamic linker. */ |
| 2299 | s = htab->srelgot; |
| 2300 | BFD_ASSERT (s != NULL); |
| 2301 | |
| 2302 | outrel.r_offset = (htab->sgot->output_section->vma |
| 2303 | + htab->sgot->output_offset |
| 2304 | + off); |
| 2305 | outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE); |
| 2306 | outrel.r_addend = relocation; |
| 2307 | relocation = 0; |
| 2308 | loc = s->contents; |
| 2309 | loc += s->reloc_count++ * sizeof (Elf32_External_Rela); |
| 2310 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
| 2311 | } |
| 2312 | |
| 2313 | bfd_put_32 (output_bfd, relocation, |
| 2314 | htab->sgot->contents + off); |
| 2315 | local_got_offsets[r_symndx] |= 1; |
| 2316 | } |
| 2317 | } |
| 2318 | relocation = htab->sgot->output_offset + off - got_base; |
| 2319 | break; |
| 2320 | |
| 2321 | case R_SPARC_PLT32: |
| 2322 | if (h == NULL || h->plt.offset == (bfd_vma) -1) |
| 2323 | { |
| 2324 | r_type = R_SPARC_32; |
| 2325 | goto r_sparc_plt32; |
| 2326 | } |
| 2327 | /* Fall through. */ |
| 2328 | case R_SPARC_WPLT30: |
| 2329 | r_sparc_wplt30: |
| 2330 | /* Relocation is to the entry for this symbol in the |
| 2331 | procedure linkage table. */ |
| 2332 | |
| 2333 | /* The Solaris native assembler will generate a WPLT30 reloc |
| 2334 | for a local symbol if you assemble a call from one |
| 2335 | section to another when using -K pic. We treat it as |
| 2336 | WDISP30. */ |
| 2337 | if (h == NULL) |
| 2338 | break; |
| 2339 | |
| 2340 | if (h->plt.offset == (bfd_vma) -1) |
| 2341 | { |
| 2342 | /* We didn't make a PLT entry for this symbol. This |
| 2343 | happens when statically linking PIC code, or when |
| 2344 | using -Bsymbolic. */ |
| 2345 | break; |
| 2346 | } |
| 2347 | |
| 2348 | if (htab->splt == NULL) |
| 2349 | abort (); |
| 2350 | |
| 2351 | relocation = (htab->splt->output_section->vma |
| 2352 | + htab->splt->output_offset |
| 2353 | + h->plt.offset); |
| 2354 | unresolved_reloc = FALSE; |
| 2355 | if (r_type == R_SPARC_PLT32) |
| 2356 | { |
| 2357 | r_type = R_SPARC_32; |
| 2358 | is_plt = TRUE; |
| 2359 | goto r_sparc_plt32; |
| 2360 | } |
| 2361 | break; |
| 2362 | |
| 2363 | case R_SPARC_PC10: |
| 2364 | case R_SPARC_PC22: |
| 2365 | if (h != NULL |
| 2366 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) |
| 2367 | break; |
| 2368 | /* Fall through. */ |
| 2369 | case R_SPARC_DISP8: |
| 2370 | case R_SPARC_DISP16: |
| 2371 | case R_SPARC_DISP32: |
| 2372 | case R_SPARC_WDISP30: |
| 2373 | case R_SPARC_WDISP22: |
| 2374 | case R_SPARC_WDISP19: |
| 2375 | case R_SPARC_WDISP16: |
| 2376 | case R_SPARC_8: |
| 2377 | case R_SPARC_16: |
| 2378 | case R_SPARC_32: |
| 2379 | case R_SPARC_HI22: |
| 2380 | case R_SPARC_22: |
| 2381 | case R_SPARC_13: |
| 2382 | case R_SPARC_LO10: |
| 2383 | case R_SPARC_UA16: |
| 2384 | case R_SPARC_UA32: |
| 2385 | r_sparc_plt32: |
| 2386 | /* r_symndx will be zero only for relocs against symbols |
| 2387 | from removed linkonce sections, or sections discarded by |
| 2388 | a linker script. */ |
| 2389 | if (r_symndx == 0 |
| 2390 | || (input_section->flags & SEC_ALLOC) == 0) |
| 2391 | break; |
| 2392 | |
| 2393 | if ((info->shared |
| 2394 | && (! howto->pc_relative |
| 2395 | || (h != NULL |
| 2396 | && h->dynindx != -1 |
| 2397 | && (! info->symbolic |
| 2398 | || (h->elf_link_hash_flags |
| 2399 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) |
| 2400 | || (!info->shared |
| 2401 | && h != NULL |
| 2402 | && h->dynindx != -1 |
| 2403 | && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 |
| 2404 | && (((h->elf_link_hash_flags |
| 2405 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 |
| 2406 | && (h->elf_link_hash_flags |
| 2407 | & ELF_LINK_HASH_DEF_REGULAR) == 0) |
| 2408 | || h->root.type == bfd_link_hash_undefweak |
| 2409 | || h->root.type == bfd_link_hash_undefined))) |
| 2410 | { |
| 2411 | Elf_Internal_Rela outrel; |
| 2412 | bfd_byte *loc; |
| 2413 | bfd_boolean skip, relocate = FALSE; |
| 2414 | |
| 2415 | /* When generating a shared object, these relocations |
| 2416 | are copied into the output file to be resolved at run |
| 2417 | time. */ |
| 2418 | |
| 2419 | BFD_ASSERT (sreloc != NULL); |
| 2420 | |
| 2421 | skip = FALSE; |
| 2422 | |
| 2423 | outrel.r_offset = |
| 2424 | _bfd_elf_section_offset (output_bfd, info, input_section, |
| 2425 | rel->r_offset); |
| 2426 | if (outrel.r_offset == (bfd_vma) -1) |
| 2427 | skip = TRUE; |
| 2428 | else if (outrel.r_offset == (bfd_vma) -2) |
| 2429 | skip = TRUE, relocate = TRUE; |
| 2430 | outrel.r_offset += (input_section->output_section->vma |
| 2431 | + input_section->output_offset); |
| 2432 | |
| 2433 | /* Optimize unaligned reloc usage now that we know where |
| 2434 | it finally resides. */ |
| 2435 | switch (r_type) |
| 2436 | { |
| 2437 | case R_SPARC_16: |
| 2438 | if (outrel.r_offset & 1) |
| 2439 | r_type = R_SPARC_UA16; |
| 2440 | break; |
| 2441 | case R_SPARC_UA16: |
| 2442 | if (!(outrel.r_offset & 1)) |
| 2443 | r_type = R_SPARC_16; |
| 2444 | break; |
| 2445 | case R_SPARC_32: |
| 2446 | if (outrel.r_offset & 3) |
| 2447 | r_type = R_SPARC_UA32; |
| 2448 | break; |
| 2449 | case R_SPARC_UA32: |
| 2450 | if (!(outrel.r_offset & 3)) |
| 2451 | r_type = R_SPARC_32; |
| 2452 | break; |
| 2453 | case R_SPARC_DISP8: |
| 2454 | case R_SPARC_DISP16: |
| 2455 | case R_SPARC_DISP32: |
| 2456 | /* If the symbol is not dynamic, we should not keep |
| 2457 | a dynamic relocation. But an .rela.* slot has been |
| 2458 | allocated for it, output R_SPARC_NONE. |
| 2459 | FIXME: Add code tracking needed dynamic relocs as |
| 2460 | e.g. i386 has. */ |
| 2461 | if (h->dynindx == -1) |
| 2462 | skip = TRUE, relocate = TRUE; |
| 2463 | break; |
| 2464 | } |
| 2465 | |
| 2466 | if (skip) |
| 2467 | memset (&outrel, 0, sizeof outrel); |
| 2468 | /* h->dynindx may be -1 if the symbol was marked to |
| 2469 | become local. */ |
| 2470 | else if (h != NULL && ! is_plt |
| 2471 | && ((! info->symbolic && h->dynindx != -1) |
| 2472 | || (h->elf_link_hash_flags |
| 2473 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) |
| 2474 | { |
| 2475 | BFD_ASSERT (h->dynindx != -1); |
| 2476 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
| 2477 | outrel.r_addend = rel->r_addend; |
| 2478 | } |
| 2479 | else |
| 2480 | { |
| 2481 | if (r_type == R_SPARC_32) |
| 2482 | { |
| 2483 | outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE); |
| 2484 | outrel.r_addend = relocation + rel->r_addend; |
| 2485 | } |
| 2486 | else |
| 2487 | { |
| 2488 | long indx; |
| 2489 | |
| 2490 | if (is_plt) |
| 2491 | sec = htab->splt; |
| 2492 | else if (h == NULL) |
| 2493 | sec = local_sections[r_symndx]; |
| 2494 | else |
| 2495 | { |
| 2496 | BFD_ASSERT (h->root.type == bfd_link_hash_defined |
| 2497 | || (h->root.type |
| 2498 | == bfd_link_hash_defweak)); |
| 2499 | sec = h->root.u.def.section; |
| 2500 | } |
| 2501 | if (sec != NULL && bfd_is_abs_section (sec)) |
| 2502 | indx = 0; |
| 2503 | else if (sec == NULL || sec->owner == NULL) |
| 2504 | { |
| 2505 | bfd_set_error (bfd_error_bad_value); |
| 2506 | return FALSE; |
| 2507 | } |
| 2508 | else |
| 2509 | { |
| 2510 | asection *osec; |
| 2511 | |
| 2512 | osec = sec->output_section; |
| 2513 | indx = elf_section_data (osec)->dynindx; |
| 2514 | |
| 2515 | /* FIXME: we really should be able to link non-pic |
| 2516 | shared libraries. */ |
| 2517 | if (indx == 0) |
| 2518 | { |
| 2519 | BFD_FAIL (); |
| 2520 | (*_bfd_error_handler) |
| 2521 | (_("%s: probably compiled without -fPIC?"), |
| 2522 | bfd_archive_filename (input_bfd)); |
| 2523 | bfd_set_error (bfd_error_bad_value); |
| 2524 | return FALSE; |
| 2525 | } |
| 2526 | } |
| 2527 | |
| 2528 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
| 2529 | outrel.r_addend = relocation + rel->r_addend; |
| 2530 | } |
| 2531 | } |
| 2532 | |
| 2533 | loc = sreloc->contents; |
| 2534 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); |
| 2535 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
| 2536 | |
| 2537 | /* This reloc will be computed at runtime, so there's no |
| 2538 | need to do anything now. */ |
| 2539 | if (! relocate) |
| 2540 | continue; |
| 2541 | } |
| 2542 | break; |
| 2543 | |
| 2544 | case R_SPARC_TLS_GD_HI22: |
| 2545 | if (! elf32_sparc_tdata (input_bfd)->has_tlsgd) |
| 2546 | { |
| 2547 | /* R_SPARC_REV32 used the same reloc number as |
| 2548 | R_SPARC_TLS_GD_HI22. */ |
| 2549 | r_type = R_SPARC_REV32; |
| 2550 | break; |
| 2551 | } |
| 2552 | /* Fall through */ |
| 2553 | |
| 2554 | case R_SPARC_TLS_GD_LO10: |
| 2555 | case R_SPARC_TLS_IE_HI22: |
| 2556 | case R_SPARC_TLS_IE_LO10: |
| 2557 | r_type = elf32_sparc_tls_transition (info, input_bfd, r_type, |
| 2558 | h == NULL); |
| 2559 | tls_type = GOT_UNKNOWN; |
| 2560 | if (h == NULL && local_got_offsets) |
| 2561 | tls_type = elf32_sparc_local_got_tls_type (input_bfd) [r_symndx]; |
| 2562 | else if (h != NULL) |
| 2563 | { |
| 2564 | tls_type = elf32_sparc_hash_entry(h)->tls_type; |
| 2565 | if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE) |
| 2566 | switch (ELF32_R_TYPE (rel->r_info)) |
| 2567 | { |
| 2568 | case R_SPARC_TLS_GD_HI22: |
| 2569 | case R_SPARC_TLS_IE_HI22: |
| 2570 | r_type = R_SPARC_TLS_LE_HIX22; |
| 2571 | break; |
| 2572 | default: |
| 2573 | r_type = R_SPARC_TLS_LE_LOX10; |
| 2574 | break; |
| 2575 | } |
| 2576 | } |
| 2577 | if (tls_type == GOT_TLS_IE) |
| 2578 | switch (r_type) |
| 2579 | { |
| 2580 | case R_SPARC_TLS_GD_HI22: |
| 2581 | r_type = R_SPARC_TLS_IE_HI22; |
| 2582 | break; |
| 2583 | case R_SPARC_TLS_GD_LO10: |
| 2584 | r_type = R_SPARC_TLS_IE_LO10; |
| 2585 | break; |
| 2586 | } |
| 2587 | |
| 2588 | if (r_type == R_SPARC_TLS_LE_HIX22) |
| 2589 | { |
| 2590 | relocation = tpoff (info, relocation); |
| 2591 | break; |
| 2592 | } |
| 2593 | if (r_type == R_SPARC_TLS_LE_LOX10) |
| 2594 | { |
| 2595 | /* Change add into xor. */ |
| 2596 | relocation = tpoff (info, relocation); |
| 2597 | bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd, |
| 2598 | contents + rel->r_offset) |
| 2599 | | 0x80182000), contents + rel->r_offset); |
| 2600 | break; |
| 2601 | } |
| 2602 | |
| 2603 | if (h != NULL) |
| 2604 | { |
| 2605 | off = h->got.offset; |
| 2606 | h->got.offset |= 1; |
| 2607 | } |
| 2608 | else |
| 2609 | { |
| 2610 | BFD_ASSERT (local_got_offsets != NULL); |
| 2611 | off = local_got_offsets[r_symndx]; |
| 2612 | local_got_offsets[r_symndx] |= 1; |
| 2613 | } |
| 2614 | |
| 2615 | r_sparc_tlsldm: |
| 2616 | if (htab->sgot == NULL) |
| 2617 | abort (); |
| 2618 | |
| 2619 | if ((off & 1) != 0) |
| 2620 | off &= ~1; |
| 2621 | else |
| 2622 | { |
| 2623 | Elf_Internal_Rela outrel; |
| 2624 | Elf32_External_Rela *loc; |
| 2625 | int dr_type, indx; |
| 2626 | |
| 2627 | if (htab->srelgot == NULL) |
| 2628 | abort (); |
| 2629 | |
| 2630 | bfd_put_32 (output_bfd, 0, htab->sgot->contents + off); |
| 2631 | outrel.r_offset = (htab->sgot->output_section->vma |
| 2632 | + htab->sgot->output_offset + off); |
| 2633 | indx = h && h->dynindx != -1 ? h->dynindx : 0; |
| 2634 | if (r_type == R_SPARC_TLS_IE_HI22 |
| 2635 | || r_type == R_SPARC_TLS_IE_LO10) |
| 2636 | dr_type = R_SPARC_TLS_TPOFF32; |
| 2637 | else |
| 2638 | dr_type = R_SPARC_TLS_DTPMOD32; |
| 2639 | if (dr_type == R_SPARC_TLS_TPOFF32 && indx == 0) |
| 2640 | outrel.r_addend = relocation - dtpoff_base (info); |
| 2641 | else |
| 2642 | outrel.r_addend = 0; |
| 2643 | outrel.r_info = ELF32_R_INFO (indx, dr_type); |
| 2644 | loc = (Elf32_External_Rela *) htab->srelgot->contents; |
| 2645 | loc += htab->srelgot->reloc_count++; |
| 2646 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, |
| 2647 | (bfd_byte *) loc); |
| 2648 | |
| 2649 | if (r_type == R_SPARC_TLS_GD_HI22 |
| 2650 | || r_type == R_SPARC_TLS_GD_LO10) |
| 2651 | { |
| 2652 | if (indx == 0) |
| 2653 | { |
| 2654 | BFD_ASSERT (! unresolved_reloc); |
| 2655 | bfd_put_32 (output_bfd, |
| 2656 | relocation - dtpoff_base (info), |
| 2657 | htab->sgot->contents + off + 4); |
| 2658 | } |
| 2659 | else |
| 2660 | { |
| 2661 | bfd_put_32 (output_bfd, 0, |
| 2662 | htab->sgot->contents + off + 4); |
| 2663 | outrel.r_info = ELF32_R_INFO (indx, |
| 2664 | R_SPARC_TLS_DTPOFF32); |
| 2665 | outrel.r_offset += 4; |
| 2666 | htab->srelgot->reloc_count++; |
| 2667 | loc++; |
| 2668 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, |
| 2669 | (bfd_byte *) loc); |
| 2670 | } |
| 2671 | } |
| 2672 | else if (dr_type == R_SPARC_TLS_DTPMOD32) |
| 2673 | { |
| 2674 | bfd_put_32 (output_bfd, 0, |
| 2675 | htab->sgot->contents + off + 4); |
| 2676 | } |
| 2677 | } |
| 2678 | |
| 2679 | if (off >= (bfd_vma) -2) |
| 2680 | abort (); |
| 2681 | |
| 2682 | relocation = htab->sgot->output_offset + off - got_base; |
| 2683 | unresolved_reloc = FALSE; |
| 2684 | howto = _bfd_sparc_elf_howto_table + r_type; |
| 2685 | break; |
| 2686 | |
| 2687 | case R_SPARC_TLS_LDM_HI22: |
| 2688 | case R_SPARC_TLS_LDM_LO10: |
| 2689 | if (! info->shared) |
| 2690 | { |
| 2691 | bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset); |
| 2692 | continue; |
| 2693 | } |
| 2694 | off = htab->tls_ldm_got.offset; |
| 2695 | htab->tls_ldm_got.offset |= 1; |
| 2696 | goto r_sparc_tlsldm; |
| 2697 | |
| 2698 | case R_SPARC_TLS_LDO_HIX22: |
| 2699 | case R_SPARC_TLS_LDO_LOX10: |
| 2700 | if (info->shared) |
| 2701 | relocation -= dtpoff_base (info); |
| 2702 | else |
| 2703 | relocation = tpoff (info, relocation); |
| 2704 | break; |
| 2705 | |
| 2706 | case R_SPARC_TLS_LE_HIX22: |
| 2707 | case R_SPARC_TLS_LE_LOX10: |
| 2708 | if (info->shared) |
| 2709 | { |
| 2710 | Elf_Internal_Rela outrel; |
| 2711 | bfd_boolean skip, relocate = FALSE; |
| 2712 | |
| 2713 | BFD_ASSERT (sreloc != NULL); |
| 2714 | skip = FALSE; |
| 2715 | outrel.r_offset = |
| 2716 | _bfd_elf_section_offset (output_bfd, info, input_section, |
| 2717 | rel->r_offset); |
| 2718 | if (outrel.r_offset == (bfd_vma) -1) |
| 2719 | skip = TRUE; |
| 2720 | else if (outrel.r_offset == (bfd_vma) -2) |
| 2721 | skip = TRUE, relocate = TRUE; |
| 2722 | outrel.r_offset += (input_section->output_section->vma |
| 2723 | + input_section->output_offset); |
| 2724 | if (skip) |
| 2725 | memset (&outrel, 0, sizeof outrel); |
| 2726 | else |
| 2727 | { |
| 2728 | outrel.r_info = ELF32_R_INFO (0, r_type); |
| 2729 | outrel.r_addend = relocation - dtpoff_base (info) |
| 2730 | + rel->r_addend; |
| 2731 | } |
| 2732 | |
| 2733 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, |
| 2734 | (bfd_byte *) (((Elf32_External_Rela *) |
| 2735 | sreloc->contents) |
| 2736 | + sreloc->reloc_count)); |
| 2737 | ++sreloc->reloc_count; |
| 2738 | continue; |
| 2739 | } |
| 2740 | relocation = tpoff (info, relocation); |
| 2741 | break; |
| 2742 | |
| 2743 | case R_SPARC_TLS_LDM_CALL: |
| 2744 | if (! info->shared) |
| 2745 | { |
| 2746 | /* mov %g0, %o0 */ |
| 2747 | bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset); |
| 2748 | continue; |
| 2749 | } |
| 2750 | /* Fall through */ |
| 2751 | |
| 2752 | case R_SPARC_TLS_GD_CALL: |
| 2753 | tls_type = GOT_UNKNOWN; |
| 2754 | if (h == NULL && local_got_offsets) |
| 2755 | tls_type = elf32_sparc_local_got_tls_type (input_bfd) [r_symndx]; |
| 2756 | else if (h != NULL) |
| 2757 | tls_type = elf32_sparc_hash_entry(h)->tls_type; |
| 2758 | if (! info->shared |
| 2759 | || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE)) |
| 2760 | { |
| 2761 | bfd_vma insn; |
| 2762 | |
| 2763 | if (!info->shared && (h == NULL || h->dynindx == -1)) |
| 2764 | { |
| 2765 | /* GD -> LE */ |
| 2766 | bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset); |
| 2767 | continue; |
| 2768 | } |
| 2769 | |
| 2770 | /* GD -> IE */ |
| 2771 | if (rel + 1 < relend |
| 2772 | && ELF32_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD |
| 2773 | && rel[1].r_offset == rel->r_offset + 4 |
| 2774 | && ELF32_R_SYM (rel[1].r_info) == r_symndx |
| 2775 | && (((insn = bfd_get_32 (input_bfd, |
| 2776 | contents + rel[1].r_offset)) |
| 2777 | >> 25) & 0x1f) == 8) |
| 2778 | { |
| 2779 | /* We have |
| 2780 | call __tls_get_addr, %tgd_call(foo) |
| 2781 | add %reg1, %reg2, %o0, %tgd_add(foo) |
| 2782 | and change it into IE: |
| 2783 | ld [%reg1 + %reg2], %o0, %tie_ld(foo) |
| 2784 | add %g7, %o0, %o0, %tie_add(foo). |
| 2785 | add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2, |
| 2786 | ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2. */ |
| 2787 | bfd_put_32 (output_bfd, insn | 0xc0000000, |
| 2788 | contents + rel->r_offset); |
| 2789 | bfd_put_32 (output_bfd, 0x9001c008, |
| 2790 | contents + rel->r_offset + 4); |
| 2791 | rel++; |
| 2792 | continue; |
| 2793 | } |
| 2794 | |
| 2795 | bfd_put_32 (output_bfd, 0x9001c008, contents + rel->r_offset); |
| 2796 | continue; |
| 2797 | } |
| 2798 | |
| 2799 | h = (struct elf_link_hash_entry *) |
| 2800 | bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE, |
| 2801 | FALSE, TRUE); |
| 2802 | BFD_ASSERT (h != NULL); |
| 2803 | r_type = R_SPARC_WPLT30; |
| 2804 | howto = _bfd_sparc_elf_howto_table + r_type; |
| 2805 | goto r_sparc_wplt30; |
| 2806 | |
| 2807 | case R_SPARC_TLS_GD_ADD: |
| 2808 | tls_type = GOT_UNKNOWN; |
| 2809 | if (h == NULL && local_got_offsets) |
| 2810 | tls_type = elf32_sparc_local_got_tls_type (input_bfd) [r_symndx]; |
| 2811 | else if (h != NULL) |
| 2812 | tls_type = elf32_sparc_hash_entry(h)->tls_type; |
| 2813 | if (! info->shared || tls_type == GOT_TLS_IE) |
| 2814 | { |
| 2815 | /* add %reg1, %reg2, %reg3, %tgd_add(foo) |
| 2816 | changed into IE: |
| 2817 | ld [%reg1 + %reg2], %reg3, %tie_ld(foo) |
| 2818 | or LE: |
| 2819 | add %g7, %reg2, %reg3. */ |
| 2820 | bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 2821 | if ((h != NULL && h->dynindx != -1) || info->shared) |
| 2822 | relocation = insn | 0xc0000000; |
| 2823 | else |
| 2824 | relocation = (insn & ~0x7c000) | 0x1c000; |
| 2825 | bfd_put_32 (output_bfd, relocation, contents + rel->r_offset); |
| 2826 | } |
| 2827 | continue; |
| 2828 | |
| 2829 | case R_SPARC_TLS_LDM_ADD: |
| 2830 | if (! info->shared) |
| 2831 | bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset); |
| 2832 | continue; |
| 2833 | |
| 2834 | case R_SPARC_TLS_LDO_ADD: |
| 2835 | if (! info->shared) |
| 2836 | { |
| 2837 | /* Change rs1 into %g7. */ |
| 2838 | bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 2839 | insn = (insn & ~0x7c000) | 0x1c000; |
| 2840 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
| 2841 | } |
| 2842 | continue; |
| 2843 | |
| 2844 | case R_SPARC_TLS_IE_LD: |
| 2845 | case R_SPARC_TLS_IE_LDX: |
| 2846 | if (! info->shared && (h == NULL || h->dynindx == -1)) |
| 2847 | { |
| 2848 | bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 2849 | int rs2 = insn & 0x1f; |
| 2850 | int rd = (insn >> 25) & 0x1f; |
| 2851 | |
| 2852 | if (rs2 == rd) |
| 2853 | relocation = SPARC_NOP; |
| 2854 | else |
| 2855 | relocation = 0x80100000 | (insn & 0x3e00001f); |
| 2856 | bfd_put_32 (output_bfd, relocation, contents + rel->r_offset); |
| 2857 | } |
| 2858 | continue; |
| 2859 | |
| 2860 | case R_SPARC_TLS_IE_ADD: |
| 2861 | /* Totally useless relocation. */ |
| 2862 | continue; |
| 2863 | |
| 2864 | case R_SPARC_TLS_DTPOFF32: |
| 2865 | relocation -= dtpoff_base (info); |
| 2866 | break; |
| 2867 | |
| 2868 | default: |
| 2869 | break; |
| 2870 | } |
| 2871 | |
| 2872 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
| 2873 | because such sections are not SEC_ALLOC and thus ld.so will |
| 2874 | not process them. */ |
| 2875 | if (unresolved_reloc |
| 2876 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
| 2877 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0)) |
| 2878 | (*_bfd_error_handler) |
| 2879 | (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"), |
| 2880 | bfd_archive_filename (input_bfd), |
| 2881 | bfd_get_section_name (input_bfd, input_section), |
| 2882 | (long) rel->r_offset, |
| 2883 | h->root.root.string); |
| 2884 | |
| 2885 | r = bfd_reloc_continue; |
| 2886 | if (r_type == R_SPARC_WDISP16) |
| 2887 | { |
| 2888 | bfd_vma x; |
| 2889 | |
| 2890 | relocation += rel->r_addend; |
| 2891 | relocation -= (input_section->output_section->vma |
| 2892 | + input_section->output_offset); |
| 2893 | relocation -= rel->r_offset; |
| 2894 | |
| 2895 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 2896 | x |= ((((relocation >> 2) & 0xc000) << 6) |
| 2897 | | ((relocation >> 2) & 0x3fff)); |
| 2898 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); |
| 2899 | |
| 2900 | if ((bfd_signed_vma) relocation < - 0x40000 |
| 2901 | || (bfd_signed_vma) relocation > 0x3ffff) |
| 2902 | r = bfd_reloc_overflow; |
| 2903 | else |
| 2904 | r = bfd_reloc_ok; |
| 2905 | } |
| 2906 | else if (r_type == R_SPARC_REV32) |
| 2907 | { |
| 2908 | bfd_vma x; |
| 2909 | |
| 2910 | relocation = relocation + rel->r_addend; |
| 2911 | |
| 2912 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 2913 | x = x + relocation; |
| 2914 | bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset); |
| 2915 | r = bfd_reloc_ok; |
| 2916 | } |
| 2917 | else if (r_type == R_SPARC_TLS_LDO_HIX22 |
| 2918 | || r_type == R_SPARC_TLS_LE_HIX22) |
| 2919 | { |
| 2920 | bfd_vma x; |
| 2921 | |
| 2922 | relocation += rel->r_addend; |
| 2923 | relocation = relocation ^ 0xffffffff; |
| 2924 | |
| 2925 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 2926 | x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff); |
| 2927 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); |
| 2928 | r = bfd_reloc_ok; |
| 2929 | } |
| 2930 | else if (r_type == R_SPARC_TLS_LDO_LOX10 |
| 2931 | || r_type == R_SPARC_TLS_LE_LOX10) |
| 2932 | { |
| 2933 | bfd_vma x; |
| 2934 | |
| 2935 | relocation += rel->r_addend; |
| 2936 | relocation = (relocation & 0x3ff) | 0x1c00; |
| 2937 | |
| 2938 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 2939 | x = (x & ~(bfd_vma) 0x1fff) | relocation; |
| 2940 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); |
| 2941 | |
| 2942 | r = bfd_reloc_ok; |
| 2943 | } |
| 2944 | else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30) |
| 2945 | && sec_do_relax (input_section) |
| 2946 | && rel->r_offset + 4 < input_section->_raw_size) |
| 2947 | { |
| 2948 | #define G0 0 |
| 2949 | #define O7 15 |
| 2950 | #define XCC (2 << 20) |
| 2951 | #define COND(x) (((x)&0xf)<<25) |
| 2952 | #define CONDA COND(0x8) |
| 2953 | #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC) |
| 2954 | #define INSN_BA (F2(0,2) | CONDA) |
| 2955 | #define INSN_OR F3(2, 0x2, 0) |
| 2956 | #define INSN_NOP F2(0,4) |
| 2957 | |
| 2958 | bfd_vma x, y; |
| 2959 | |
| 2960 | /* If the instruction is a call with either: |
| 2961 | restore |
| 2962 | arithmetic instruction with rd == %o7 |
| 2963 | where rs1 != %o7 and rs2 if it is register != %o7 |
| 2964 | then we can optimize if the call destination is near |
| 2965 | by changing the call into a branch always. */ |
| 2966 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 2967 | y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); |
| 2968 | if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2)) |
| 2969 | { |
| 2970 | if (((y & OP3(~0)) == OP3(0x3d) /* restore */ |
| 2971 | || ((y & OP3(0x28)) == 0 /* arithmetic */ |
| 2972 | && (y & RD(~0)) == RD(O7))) |
| 2973 | && (y & RS1(~0)) != RS1(O7) |
| 2974 | && ((y & F3I(~0)) |
| 2975 | || (y & RS2(~0)) != RS2(O7))) |
| 2976 | { |
| 2977 | bfd_vma reloc; |
| 2978 | |
| 2979 | reloc = relocation + rel->r_addend - rel->r_offset; |
| 2980 | reloc -= (input_section->output_section->vma |
| 2981 | + input_section->output_offset); |
| 2982 | |
| 2983 | /* Ensure the reloc fits into simm22. */ |
| 2984 | if ((reloc & 3) == 0 |
| 2985 | && ((reloc & ~(bfd_vma)0x7fffff) == 0 |
| 2986 | || ((reloc | 0x7fffff) == ~(bfd_vma)0))) |
| 2987 | { |
| 2988 | reloc >>= 2; |
| 2989 | |
| 2990 | /* Check whether it fits into simm19 on v9. */ |
| 2991 | if (((reloc & 0x3c0000) == 0 |
| 2992 | || (reloc & 0x3c0000) == 0x3c0000) |
| 2993 | && (elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS)) |
| 2994 | x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */ |
| 2995 | else |
| 2996 | x = INSN_BA | (reloc & 0x3fffff); /* ba */ |
| 2997 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); |
| 2998 | r = bfd_reloc_ok; |
| 2999 | if (rel->r_offset >= 4 |
| 3000 | && (y & (0xffffffff ^ RS1(~0))) |
| 3001 | == (INSN_OR | RD(O7) | RS2(G0))) |
| 3002 | { |
| 3003 | bfd_vma z; |
| 3004 | unsigned int reg; |
| 3005 | |
| 3006 | z = bfd_get_32 (input_bfd, |
| 3007 | contents + rel->r_offset - 4); |
| 3008 | if ((z & (0xffffffff ^ RD(~0))) |
| 3009 | != (INSN_OR | RS1(O7) | RS2(G0))) |
| 3010 | break; |
| 3011 | |
| 3012 | /* The sequence was |
| 3013 | or %o7, %g0, %rN |
| 3014 | call foo |
| 3015 | or %rN, %g0, %o7 |
| 3016 | |
| 3017 | If call foo was replaced with ba, replace |
| 3018 | or %rN, %g0, %o7 with nop. */ |
| 3019 | |
| 3020 | reg = (y & RS1(~0)) >> 14; |
| 3021 | if (reg != ((z & RD(~0)) >> 25) |
| 3022 | || reg == G0 || reg == O7) |
| 3023 | break; |
| 3024 | |
| 3025 | bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP, |
| 3026 | contents + rel->r_offset + 4); |
| 3027 | } |
| 3028 | |
| 3029 | } |
| 3030 | } |
| 3031 | } |
| 3032 | } |
| 3033 | |
| 3034 | if (r == bfd_reloc_continue) |
| 3035 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 3036 | contents, rel->r_offset, |
| 3037 | relocation, rel->r_addend); |
| 3038 | |
| 3039 | if (r != bfd_reloc_ok) |
| 3040 | { |
| 3041 | switch (r) |
| 3042 | { |
| 3043 | default: |
| 3044 | case bfd_reloc_outofrange: |
| 3045 | abort (); |
| 3046 | case bfd_reloc_overflow: |
| 3047 | { |
| 3048 | const char *name; |
| 3049 | |
| 3050 | if (h != NULL) |
| 3051 | name = h->root.root.string; |
| 3052 | else |
| 3053 | { |
| 3054 | name = bfd_elf_string_from_elf_section (input_bfd, |
| 3055 | symtab_hdr->sh_link, |
| 3056 | sym->st_name); |
| 3057 | if (name == NULL) |
| 3058 | return FALSE; |
| 3059 | if (*name == '\0') |
| 3060 | name = bfd_section_name (input_bfd, sec); |
| 3061 | } |
| 3062 | if (! ((*info->callbacks->reloc_overflow) |
| 3063 | (info, name, howto->name, (bfd_vma) 0, |
| 3064 | input_bfd, input_section, rel->r_offset))) |
| 3065 | return FALSE; |
| 3066 | } |
| 3067 | break; |
| 3068 | } |
| 3069 | } |
| 3070 | } |
| 3071 | |
| 3072 | return TRUE; |
| 3073 | } |
| 3074 | |
| 3075 | /* Finish up dynamic symbol handling. We set the contents of various |
| 3076 | dynamic sections here. */ |
| 3077 | |
| 3078 | static bfd_boolean |
| 3079 | elf32_sparc_finish_dynamic_symbol (output_bfd, info, h, sym) |
| 3080 | bfd *output_bfd; |
| 3081 | struct bfd_link_info *info; |
| 3082 | struct elf_link_hash_entry *h; |
| 3083 | Elf_Internal_Sym *sym; |
| 3084 | { |
| 3085 | bfd *dynobj; |
| 3086 | struct elf32_sparc_link_hash_table *htab; |
| 3087 | |
| 3088 | htab = elf32_sparc_hash_table (info); |
| 3089 | dynobj = htab->elf.dynobj; |
| 3090 | |
| 3091 | if (h->plt.offset != (bfd_vma) -1) |
| 3092 | { |
| 3093 | asection *splt; |
| 3094 | asection *srela; |
| 3095 | Elf_Internal_Rela rela; |
| 3096 | bfd_byte *loc; |
| 3097 | |
| 3098 | /* This symbol has an entry in the procedure linkage table. Set |
| 3099 | it up. */ |
| 3100 | |
| 3101 | BFD_ASSERT (h->dynindx != -1); |
| 3102 | |
| 3103 | splt = htab->splt; |
| 3104 | srela = htab->srelplt; |
| 3105 | BFD_ASSERT (splt != NULL && srela != NULL); |
| 3106 | |
| 3107 | /* Fill in the entry in the procedure linkage table. */ |
| 3108 | bfd_put_32 (output_bfd, |
| 3109 | PLT_ENTRY_WORD0 + h->plt.offset, |
| 3110 | splt->contents + h->plt.offset); |
| 3111 | bfd_put_32 (output_bfd, |
| 3112 | (PLT_ENTRY_WORD1 |
| 3113 | + (((- (h->plt.offset + 4)) >> 2) & 0x3fffff)), |
| 3114 | splt->contents + h->plt.offset + 4); |
| 3115 | bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2, |
| 3116 | splt->contents + h->plt.offset + 8); |
| 3117 | |
| 3118 | /* Fill in the entry in the .rela.plt section. */ |
| 3119 | rela.r_offset = (splt->output_section->vma |
| 3120 | + splt->output_offset |
| 3121 | + h->plt.offset); |
| 3122 | rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_JMP_SLOT); |
| 3123 | rela.r_addend = 0; |
| 3124 | loc = srela->contents; |
| 3125 | loc += (h->plt.offset / PLT_ENTRY_SIZE - 4) * sizeof (Elf32_External_Rela); |
| 3126 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
| 3127 | |
| 3128 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) |
| 3129 | { |
| 3130 | /* Mark the symbol as undefined, rather than as defined in |
| 3131 | the .plt section. Leave the value alone. */ |
| 3132 | sym->st_shndx = SHN_UNDEF; |
| 3133 | /* If the symbol is weak, we do need to clear the value. |
| 3134 | Otherwise, the PLT entry would provide a definition for |
| 3135 | the symbol even if the symbol wasn't defined anywhere, |
| 3136 | and so the symbol would never be NULL. */ |
| 3137 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK) |
| 3138 | == 0) |
| 3139 | sym->st_value = 0; |
| 3140 | } |
| 3141 | } |
| 3142 | |
| 3143 | if (h->got.offset != (bfd_vma) -1 |
| 3144 | && elf32_sparc_hash_entry(h)->tls_type != GOT_TLS_GD |
| 3145 | && elf32_sparc_hash_entry(h)->tls_type != GOT_TLS_IE) |
| 3146 | { |
| 3147 | asection *sgot; |
| 3148 | asection *srela; |
| 3149 | Elf_Internal_Rela rela; |
| 3150 | bfd_byte *loc; |
| 3151 | |
| 3152 | /* This symbol has an entry in the global offset table. Set it |
| 3153 | up. */ |
| 3154 | |
| 3155 | sgot = htab->sgot; |
| 3156 | srela = htab->srelgot; |
| 3157 | BFD_ASSERT (sgot != NULL && srela != NULL); |
| 3158 | |
| 3159 | rela.r_offset = (sgot->output_section->vma |
| 3160 | + sgot->output_offset |
| 3161 | + (h->got.offset &~ (bfd_vma) 1)); |
| 3162 | |
| 3163 | /* If this is a -Bsymbolic link, and the symbol is defined |
| 3164 | locally, we just want to emit a RELATIVE reloc. Likewise if |
| 3165 | the symbol was forced to be local because of a version file. |
| 3166 | The entry in the global offset table will already have been |
| 3167 | initialized in the relocate_section function. */ |
| 3168 | if (info->shared |
| 3169 | && (info->symbolic || h->dynindx == -1) |
| 3170 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) |
| 3171 | { |
| 3172 | asection *sec = h->root.u.def.section; |
| 3173 | rela.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE); |
| 3174 | rela.r_addend = (h->root.u.def.value |
| 3175 | + sec->output_section->vma |
| 3176 | + sec->output_offset); |
| 3177 | } |
| 3178 | else |
| 3179 | { |
| 3180 | rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_GLOB_DAT); |
| 3181 | rela.r_addend = 0; |
| 3182 | } |
| 3183 | |
| 3184 | bfd_put_32 (output_bfd, (bfd_vma) 0, |
| 3185 | sgot->contents + (h->got.offset &~ (bfd_vma) 1)); |
| 3186 | loc = srela->contents; |
| 3187 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); |
| 3188 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
| 3189 | } |
| 3190 | |
| 3191 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) |
| 3192 | { |
| 3193 | asection *s; |
| 3194 | Elf_Internal_Rela rela; |
| 3195 | bfd_byte *loc; |
| 3196 | |
| 3197 | /* This symbols needs a copy reloc. Set it up. */ |
| 3198 | |
| 3199 | BFD_ASSERT (h->dynindx != -1); |
| 3200 | |
| 3201 | s = bfd_get_section_by_name (h->root.u.def.section->owner, |
| 3202 | ".rela.bss"); |
| 3203 | BFD_ASSERT (s != NULL); |
| 3204 | |
| 3205 | rela.r_offset = (h->root.u.def.value |
| 3206 | + h->root.u.def.section->output_section->vma |
| 3207 | + h->root.u.def.section->output_offset); |
| 3208 | rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_COPY); |
| 3209 | rela.r_addend = 0; |
| 3210 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
| 3211 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
| 3212 | } |
| 3213 | |
| 3214 | /* Mark some specially defined symbols as absolute. */ |
| 3215 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
| 3216 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 |
| 3217 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) |
| 3218 | sym->st_shndx = SHN_ABS; |
| 3219 | |
| 3220 | return TRUE; |
| 3221 | } |
| 3222 | |
| 3223 | /* Finish up the dynamic sections. */ |
| 3224 | |
| 3225 | static bfd_boolean |
| 3226 | elf32_sparc_finish_dynamic_sections (output_bfd, info) |
| 3227 | bfd *output_bfd; |
| 3228 | struct bfd_link_info *info; |
| 3229 | { |
| 3230 | bfd *dynobj; |
| 3231 | asection *sdyn; |
| 3232 | struct elf32_sparc_link_hash_table *htab; |
| 3233 | |
| 3234 | htab = elf32_sparc_hash_table (info); |
| 3235 | dynobj = htab->elf.dynobj; |
| 3236 | |
| 3237 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
| 3238 | |
| 3239 | if (elf_hash_table (info)->dynamic_sections_created) |
| 3240 | { |
| 3241 | asection *splt; |
| 3242 | Elf32_External_Dyn *dyncon, *dynconend; |
| 3243 | |
| 3244 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 3245 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
| 3246 | |
| 3247 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
| 3248 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); |
| 3249 | for (; dyncon < dynconend; dyncon++) |
| 3250 | { |
| 3251 | Elf_Internal_Dyn dyn; |
| 3252 | const char *name; |
| 3253 | bfd_boolean size; |
| 3254 | |
| 3255 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
| 3256 | |
| 3257 | switch (dyn.d_tag) |
| 3258 | { |
| 3259 | case DT_PLTGOT: name = ".plt"; size = FALSE; break; |
| 3260 | case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break; |
| 3261 | case DT_JMPREL: name = ".rela.plt"; size = FALSE; break; |
| 3262 | default: name = NULL; size = FALSE; break; |
| 3263 | } |
| 3264 | |
| 3265 | if (name != NULL) |
| 3266 | { |
| 3267 | asection *s; |
| 3268 | |
| 3269 | s = bfd_get_section_by_name (output_bfd, name); |
| 3270 | if (s == NULL) |
| 3271 | dyn.d_un.d_val = 0; |
| 3272 | else |
| 3273 | { |
| 3274 | if (! size) |
| 3275 | dyn.d_un.d_ptr = s->vma; |
| 3276 | else |
| 3277 | { |
| 3278 | if (s->_cooked_size != 0) |
| 3279 | dyn.d_un.d_val = s->_cooked_size; |
| 3280 | else |
| 3281 | dyn.d_un.d_val = s->_raw_size; |
| 3282 | } |
| 3283 | } |
| 3284 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 3285 | } |
| 3286 | } |
| 3287 | |
| 3288 | /* Clear the first four entries in the procedure linkage table, |
| 3289 | and put a nop in the last four bytes. */ |
| 3290 | if (splt->_raw_size > 0) |
| 3291 | { |
| 3292 | memset (splt->contents, 0, 4 * PLT_ENTRY_SIZE); |
| 3293 | bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP, |
| 3294 | splt->contents + splt->_raw_size - 4); |
| 3295 | } |
| 3296 | |
| 3297 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = |
| 3298 | PLT_ENTRY_SIZE; |
| 3299 | } |
| 3300 | |
| 3301 | /* Set the first entry in the global offset table to the address of |
| 3302 | the dynamic section. */ |
| 3303 | if (htab->sgot && htab->sgot->_raw_size > 0) |
| 3304 | { |
| 3305 | if (sdyn == NULL) |
| 3306 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgot->contents); |
| 3307 | else |
| 3308 | bfd_put_32 (output_bfd, |
| 3309 | sdyn->output_section->vma + sdyn->output_offset, |
| 3310 | htab->sgot->contents); |
| 3311 | } |
| 3312 | |
| 3313 | if (htab->sgot) |
| 3314 | elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 4; |
| 3315 | |
| 3316 | return TRUE; |
| 3317 | } |
| 3318 | \f |
| 3319 | /* Functions for dealing with the e_flags field. |
| 3320 | |
| 3321 | We don't define set_private_flags or copy_private_bfd_data because |
| 3322 | the only currently defined values are based on the bfd mach number, |
| 3323 | so we use the latter instead and defer setting e_flags until the |
| 3324 | file is written out. */ |
| 3325 | |
| 3326 | /* Merge backend specific data from an object file to the output |
| 3327 | object file when linking. */ |
| 3328 | |
| 3329 | static bfd_boolean |
| 3330 | elf32_sparc_merge_private_bfd_data (ibfd, obfd) |
| 3331 | bfd *ibfd; |
| 3332 | bfd *obfd; |
| 3333 | { |
| 3334 | bfd_boolean error; |
| 3335 | /* FIXME: This should not be static. */ |
| 3336 | static unsigned long previous_ibfd_e_flags = (unsigned long) -1; |
| 3337 | |
| 3338 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
| 3339 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
| 3340 | return TRUE; |
| 3341 | |
| 3342 | error = FALSE; |
| 3343 | |
| 3344 | if (bfd_get_mach (ibfd) >= bfd_mach_sparc_v9) |
| 3345 | { |
| 3346 | error = TRUE; |
| 3347 | (*_bfd_error_handler) |
| 3348 | (_("%s: compiled for a 64 bit system and target is 32 bit"), |
| 3349 | bfd_archive_filename (ibfd)); |
| 3350 | } |
| 3351 | else if ((ibfd->flags & DYNAMIC) == 0) |
| 3352 | { |
| 3353 | if (bfd_get_mach (obfd) < bfd_get_mach (ibfd)) |
| 3354 | bfd_set_arch_mach (obfd, bfd_arch_sparc, bfd_get_mach (ibfd)); |
| 3355 | } |
| 3356 | |
| 3357 | if (((elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA) |
| 3358 | != previous_ibfd_e_flags) |
| 3359 | && previous_ibfd_e_flags != (unsigned long) -1) |
| 3360 | { |
| 3361 | (*_bfd_error_handler) |
| 3362 | (_("%s: linking little endian files with big endian files"), |
| 3363 | bfd_archive_filename (ibfd)); |
| 3364 | error = TRUE; |
| 3365 | } |
| 3366 | previous_ibfd_e_flags = elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA; |
| 3367 | |
| 3368 | if (error) |
| 3369 | { |
| 3370 | bfd_set_error (bfd_error_bad_value); |
| 3371 | return FALSE; |
| 3372 | } |
| 3373 | |
| 3374 | return TRUE; |
| 3375 | } |
| 3376 | \f |
| 3377 | /* Set the right machine number. */ |
| 3378 | |
| 3379 | static bfd_boolean |
| 3380 | elf32_sparc_object_p (abfd) |
| 3381 | bfd *abfd; |
| 3382 | { |
| 3383 | /* Allocate our special target data. */ |
| 3384 | struct elf32_sparc_obj_tdata *new_tdata; |
| 3385 | bfd_size_type amt = sizeof (struct elf32_sparc_obj_tdata); |
| 3386 | new_tdata = bfd_zalloc (abfd, amt); |
| 3387 | if (new_tdata == NULL) |
| 3388 | return FALSE; |
| 3389 | new_tdata->root = *abfd->tdata.elf_obj_data; |
| 3390 | abfd->tdata.any = new_tdata; |
| 3391 | |
| 3392 | if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS) |
| 3393 | { |
| 3394 | if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3) |
| 3395 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, |
| 3396 | bfd_mach_sparc_v8plusb); |
| 3397 | else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1) |
| 3398 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, |
| 3399 | bfd_mach_sparc_v8plusa); |
| 3400 | else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS) |
| 3401 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, |
| 3402 | bfd_mach_sparc_v8plus); |
| 3403 | else |
| 3404 | return FALSE; |
| 3405 | } |
| 3406 | else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA) |
| 3407 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, |
| 3408 | bfd_mach_sparc_sparclite_le); |
| 3409 | else |
| 3410 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc); |
| 3411 | } |
| 3412 | |
| 3413 | /* The final processing done just before writing out the object file. |
| 3414 | We need to set the e_machine field appropriately. */ |
| 3415 | |
| 3416 | static void |
| 3417 | elf32_sparc_final_write_processing (abfd, linker) |
| 3418 | bfd *abfd; |
| 3419 | bfd_boolean linker ATTRIBUTE_UNUSED; |
| 3420 | { |
| 3421 | switch (bfd_get_mach (abfd)) |
| 3422 | { |
| 3423 | case bfd_mach_sparc : |
| 3424 | break; /* nothing to do */ |
| 3425 | case bfd_mach_sparc_v8plus : |
| 3426 | elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS; |
| 3427 | elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK; |
| 3428 | elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS; |
| 3429 | break; |
| 3430 | case bfd_mach_sparc_v8plusa : |
| 3431 | elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS; |
| 3432 | elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK; |
| 3433 | elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1; |
| 3434 | break; |
| 3435 | case bfd_mach_sparc_v8plusb : |
| 3436 | elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS; |
| 3437 | elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK; |
| 3438 | elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1 |
| 3439 | | EF_SPARC_SUN_US3; |
| 3440 | break; |
| 3441 | case bfd_mach_sparc_sparclite_le : |
| 3442 | elf_elfheader (abfd)->e_machine = EM_SPARC; |
| 3443 | elf_elfheader (abfd)->e_flags |= EF_SPARC_LEDATA; |
| 3444 | break; |
| 3445 | default : |
| 3446 | abort (); |
| 3447 | break; |
| 3448 | } |
| 3449 | } |
| 3450 | |
| 3451 | static enum elf_reloc_type_class |
| 3452 | elf32_sparc_reloc_type_class (rela) |
| 3453 | const Elf_Internal_Rela *rela; |
| 3454 | { |
| 3455 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
| 3456 | { |
| 3457 | case R_SPARC_RELATIVE: |
| 3458 | return reloc_class_relative; |
| 3459 | case R_SPARC_JMP_SLOT: |
| 3460 | return reloc_class_plt; |
| 3461 | case R_SPARC_COPY: |
| 3462 | return reloc_class_copy; |
| 3463 | default: |
| 3464 | return reloc_class_normal; |
| 3465 | } |
| 3466 | } |
| 3467 | \f |
| 3468 | #define TARGET_BIG_SYM bfd_elf32_sparc_vec |
| 3469 | #define TARGET_BIG_NAME "elf32-sparc" |
| 3470 | #define ELF_ARCH bfd_arch_sparc |
| 3471 | #define ELF_MACHINE_CODE EM_SPARC |
| 3472 | #define ELF_MACHINE_ALT1 EM_SPARC32PLUS |
| 3473 | #define ELF_MAXPAGESIZE 0x10000 |
| 3474 | |
| 3475 | #define bfd_elf32_bfd_reloc_type_lookup elf32_sparc_reloc_type_lookup |
| 3476 | #define bfd_elf32_bfd_link_hash_table_create \ |
| 3477 | elf32_sparc_link_hash_table_create |
| 3478 | #define bfd_elf32_bfd_relax_section elf32_sparc_relax_section |
| 3479 | #define bfd_elf32_new_section_hook elf32_sparc_new_section_hook |
| 3480 | #define elf_info_to_howto elf32_sparc_info_to_howto |
| 3481 | #define elf_backend_copy_indirect_symbol \ |
| 3482 | elf32_sparc_copy_indirect_symbol |
| 3483 | #define elf_backend_create_dynamic_sections \ |
| 3484 | elf32_sparc_create_dynamic_sections |
| 3485 | #define elf_backend_check_relocs elf32_sparc_check_relocs |
| 3486 | #define elf_backend_adjust_dynamic_symbol \ |
| 3487 | elf32_sparc_adjust_dynamic_symbol |
| 3488 | #define elf_backend_size_dynamic_sections \ |
| 3489 | elf32_sparc_size_dynamic_sections |
| 3490 | #define elf_backend_relocate_section elf32_sparc_relocate_section |
| 3491 | #define elf_backend_finish_dynamic_symbol \ |
| 3492 | elf32_sparc_finish_dynamic_symbol |
| 3493 | #define elf_backend_finish_dynamic_sections \ |
| 3494 | elf32_sparc_finish_dynamic_sections |
| 3495 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
| 3496 | elf32_sparc_merge_private_bfd_data |
| 3497 | #define bfd_elf32_mkobject elf32_sparc_mkobject |
| 3498 | #define elf_backend_object_p elf32_sparc_object_p |
| 3499 | #define elf_backend_final_write_processing \ |
| 3500 | elf32_sparc_final_write_processing |
| 3501 | #define elf_backend_gc_mark_hook elf32_sparc_gc_mark_hook |
| 3502 | #define elf_backend_gc_sweep_hook elf32_sparc_gc_sweep_hook |
| 3503 | #define elf_backend_reloc_type_class elf32_sparc_reloc_type_class |
| 3504 | |
| 3505 | #define elf_backend_can_gc_sections 1 |
| 3506 | #define elf_backend_can_refcount 1 |
| 3507 | #define elf_backend_want_got_plt 0 |
| 3508 | #define elf_backend_plt_readonly 0 |
| 3509 | #define elf_backend_want_plt_sym 1 |
| 3510 | #define elf_backend_got_header_size 4 |
| 3511 | #define elf_backend_plt_header_size (4*PLT_ENTRY_SIZE) |
| 3512 | #define elf_backend_rela_normal 1 |
| 3513 | |
| 3514 | #include "elf32-target.h" |