diff options
Diffstat (limited to 'bfd/elf64-sparc.c')
| -rw-r--r-- | bfd/elf64-sparc.c | 2275 |
1 files changed, 2275 insertions, 0 deletions
diff --git a/bfd/elf64-sparc.c b/bfd/elf64-sparc.c new file mode 100644 index 00000000000..17fe98dafc2 --- /dev/null +++ b/bfd/elf64-sparc.c @@ -0,0 +1,2275 @@ +/* SPARC-specific support for 64-bit ELF + Copyright (C) 1993, 95, 96, 97, 98, 1999 Free Software Foundation, Inc. + +This file is part of BFD, the Binary File Descriptor library. + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#include "bfd.h" +#include "sysdep.h" +#include "libbfd.h" +#include "elf-bfd.h" + +/* This is defined if one wants to build upward compatible binaries + with the original sparc64-elf toolchain. The support is kept in for + now but is turned off by default. dje 970930 */ +/*#define SPARC64_OLD_RELOCS*/ + +#include "elf/sparc.h" + +/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ +#define MINUS_ONE (~ (bfd_vma) 0) + +static reloc_howto_type *sparc64_elf_reloc_type_lookup + PARAMS ((bfd *, bfd_reloc_code_real_type)); +static void sparc64_elf_info_to_howto + PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); + +static void sparc64_elf_build_plt + PARAMS((bfd *, unsigned char *, int)); +static bfd_vma sparc64_elf_plt_entry_offset + PARAMS((int)); +static bfd_vma sparc64_elf_plt_ptr_offset + PARAMS((int, int)); + +static boolean sparc64_elf_check_relocs + PARAMS((bfd *, struct bfd_link_info *, asection *sec, + const Elf_Internal_Rela *)); +static boolean sparc64_elf_adjust_dynamic_symbol + PARAMS((struct bfd_link_info *, struct elf_link_hash_entry *)); +static boolean sparc64_elf_size_dynamic_sections + PARAMS((bfd *, struct bfd_link_info *)); +static boolean sparc64_elf_adjust_dynindx + PARAMS((struct elf_link_hash_entry *, PTR)); + +static boolean sparc64_elf_merge_private_bfd_data + PARAMS ((bfd *, bfd *)); + +static boolean sparc64_elf_relocate_section + PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, + Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); +static boolean sparc64_elf_object_p PARAMS ((bfd *)); + +/* The relocation "howto" table. */ + +static bfd_reloc_status_type sparc_elf_notsup_reloc + PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); +static bfd_reloc_status_type sparc_elf_wdisp16_reloc + PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); +static bfd_reloc_status_type sparc_elf_hix22_reloc + PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); +static bfd_reloc_status_type sparc_elf_lox10_reloc + PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); + +static reloc_howto_type sparc64_elf_howto_table[] = +{ + HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), + HOWTO(R_SPARC_8, 0,0, 8,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", false,0,0x000000ff,true), + HOWTO(R_SPARC_16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", false,0,0x0000ffff,true), + HOWTO(R_SPARC_32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", false,0,0xffffffff,true), + HOWTO(R_SPARC_DISP8, 0,0, 8,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", false,0,0x000000ff,true), + HOWTO(R_SPARC_DISP16, 0,1,16,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", false,0,0x0000ffff,true), + HOWTO(R_SPARC_DISP32, 0,2,32,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", false,0,0x00ffffff,true), + HOWTO(R_SPARC_WDISP30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", false,0,0x3fffffff,true), + HOWTO(R_SPARC_WDISP22, 2,2,22,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", false,0,0x003fffff,true), + HOWTO(R_SPARC_HI22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", false,0,0x003fffff,true), + HOWTO(R_SPARC_22, 0,2,22,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", false,0,0x003fffff,true), + HOWTO(R_SPARC_13, 0,2,13,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", false,0,0x00001fff,true), + HOWTO(R_SPARC_LO10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", false,0,0x000003ff,true), + HOWTO(R_SPARC_GOT10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", false,0,0x000003ff,true), + HOWTO(R_SPARC_GOT13, 0,2,13,false,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", false,0,0x00001fff,true), + HOWTO(R_SPARC_GOT22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", false,0,0x003fffff,true), + HOWTO(R_SPARC_PC10, 0,2,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", false,0,0x000003ff,true), + HOWTO(R_SPARC_PC22, 10,2,22,true, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", false,0,0x003fffff,true), + HOWTO(R_SPARC_WPLT30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", false,0,0x3fffffff,true), + HOWTO(R_SPARC_COPY, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", false,0,0x00000000,true), + 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), + 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), + HOWTO(R_SPARC_RELATIVE, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",false,0,0x00000000,true), + HOWTO(R_SPARC_UA32, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UA32", false,0,0x00000000,true), +#ifndef SPARC64_OLD_RELOCS + /* These aren't implemented yet. */ + HOWTO(R_SPARC_PLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PLT32", false,0,0x00000000,true), + HOWTO(R_SPARC_HIPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_HIPLT22", false,0,0x00000000,true), + HOWTO(R_SPARC_LOPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_LOPLT10", false,0,0x00000000,true), + HOWTO(R_SPARC_PCPLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT32", false,0,0x00000000,true), + HOWTO(R_SPARC_PCPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT22", false,0,0x00000000,true), + HOWTO(R_SPARC_PCPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT10", false,0,0x00000000,true), +#endif + HOWTO(R_SPARC_10, 0,2,10,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", false,0,0x000003ff,true), + HOWTO(R_SPARC_11, 0,2,11,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", false,0,0x000007ff,true), + HOWTO(R_SPARC_64, 0,4,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", false,0,MINUS_ONE, true), + HOWTO(R_SPARC_OLO10, 0,2,13,false,0,complain_overflow_signed, sparc_elf_notsup_reloc, "R_SPARC_OLO10", false,0,0x00001fff,true), + HOWTO(R_SPARC_HH22, 42,2,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", false,0,0x003fffff,true), + HOWTO(R_SPARC_HM10, 32,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", false,0,0x000003ff,true), + HOWTO(R_SPARC_LM22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", false,0,0x003fffff,true), + HOWTO(R_SPARC_PC_HH22, 42,2,22,true, 0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_PC_HH22", false,0,0x003fffff,true), + HOWTO(R_SPARC_PC_HM10, 32,2,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_HM10", false,0,0x000003ff,true), + HOWTO(R_SPARC_PC_LM22, 10,2,22,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_LM22", false,0,0x003fffff,true), + HOWTO(R_SPARC_WDISP16, 2,2,16,true, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", false,0,0x00000000,true), + HOWTO(R_SPARC_WDISP19, 2,2,19,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", false,0,0x0007ffff,true), + 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), + HOWTO(R_SPARC_7, 0,2, 7,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", false,0,0x0000007f,true), + HOWTO(R_SPARC_5, 0,2, 5,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", false,0,0x0000001f,true), + HOWTO(R_SPARC_6, 0,2, 6,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", false,0,0x0000003f,true), + HOWTO(R_SPARC_DISP64, 0,4,64,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP64", false,0,MINUS_ONE, true), + HOWTO(R_SPARC_PLT64, 0,4,64,false,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_PLT64", false,0,MINUS_ONE, false), + HOWTO(R_SPARC_HIX22, 0,4, 0,false,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_HIX22", false,0,MINUS_ONE, false), + HOWTO(R_SPARC_LOX10, 0,4, 0,false,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_LOX10", false,0,MINUS_ONE, false), + HOWTO(R_SPARC_H44, 22,2,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_H44", false,0,0x003fffff,false), + HOWTO(R_SPARC_M44, 12,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_M44", false,0,0x000003ff,false), + HOWTO(R_SPARC_L44, 0,2,13,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_L44", false,0,0x00000fff,false), + HOWTO(R_SPARC_REGISTER, 0,4, 0,false,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_REGISTER",false,0,MINUS_ONE, false), + HOWTO(R_SPARC_UA64, 0,4,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA64", false,0,MINUS_ONE, true), + HOWTO(R_SPARC_UA16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", false,0,0x0000ffff,true) +}; + +struct elf_reloc_map { + bfd_reloc_code_real_type bfd_reloc_val; + unsigned char elf_reloc_val; +}; + +static CONST struct elf_reloc_map sparc_reloc_map[] = +{ + { BFD_RELOC_NONE, R_SPARC_NONE, }, + { BFD_RELOC_16, R_SPARC_16, }, + { BFD_RELOC_8, R_SPARC_8 }, + { BFD_RELOC_8_PCREL, R_SPARC_DISP8 }, + { BFD_RELOC_CTOR, R_SPARC_64 }, + { BFD_RELOC_32, R_SPARC_32 }, + { BFD_RELOC_32_PCREL, R_SPARC_DISP32 }, + { BFD_RELOC_HI22, R_SPARC_HI22 }, + { BFD_RELOC_LO10, R_SPARC_LO10, }, + { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 }, + { BFD_RELOC_SPARC22, R_SPARC_22 }, + { BFD_RELOC_SPARC13, R_SPARC_13 }, + { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 }, + { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 }, + { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 }, + { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 }, + { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 }, + { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 }, + { BFD_RELOC_SPARC_COPY, R_SPARC_COPY }, + { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT }, + { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT }, + { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE }, + { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 }, + /* ??? Doesn't dwarf use this? */ +/*{ BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, not used?? */ + {BFD_RELOC_SPARC_10, R_SPARC_10}, + {BFD_RELOC_SPARC_11, R_SPARC_11}, + {BFD_RELOC_SPARC_64, R_SPARC_64}, + {BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10}, + {BFD_RELOC_SPARC_HH22, R_SPARC_HH22}, + {BFD_RELOC_SPARC_HM10, R_SPARC_HM10}, + {BFD_RELOC_SPARC_LM22, R_SPARC_LM22}, + {BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22}, + {BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10}, + {BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22}, + {BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16}, + {BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19}, + {BFD_RELOC_SPARC_7, R_SPARC_7}, + {BFD_RELOC_SPARC_5, R_SPARC_5}, + {BFD_RELOC_SPARC_6, R_SPARC_6}, + {BFD_RELOC_SPARC_DISP64, R_SPARC_DISP64}, + {BFD_RELOC_SPARC_PLT64, R_SPARC_PLT64}, + {BFD_RELOC_SPARC_HIX22, R_SPARC_HIX22}, + {BFD_RELOC_SPARC_LOX10, R_SPARC_LOX10}, + {BFD_RELOC_SPARC_H44, R_SPARC_H44}, + {BFD_RELOC_SPARC_M44, R_SPARC_M44}, + {BFD_RELOC_SPARC_L44, R_SPARC_L44}, + {BFD_RELOC_SPARC_REGISTER, R_SPARC_REGISTER} +}; + +static reloc_howto_type * +sparc64_elf_reloc_type_lookup (abfd, code) + bfd *abfd; + bfd_reloc_code_real_type code; +{ + unsigned int i; + for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); i++) + { + if (sparc_reloc_map[i].bfd_reloc_val == code) + return &sparc64_elf_howto_table[(int) sparc_reloc_map[i].elf_reloc_val]; + } + return 0; +} + +static void +sparc64_elf_info_to_howto (abfd, cache_ptr, dst) + bfd *abfd; + arelent *cache_ptr; + Elf64_Internal_Rela *dst; +{ + BFD_ASSERT (ELF64_R_TYPE (dst->r_info) < (unsigned int) R_SPARC_max); + cache_ptr->howto = &sparc64_elf_howto_table[ELF64_R_TYPE (dst->r_info)]; +} + +/* Utility for performing the standard initial work of an instruction + relocation. + *PRELOCATION will contain the relocated item. + *PINSN will contain the instruction from the input stream. + If the result is `bfd_reloc_other' the caller can continue with + performing the relocation. Otherwise it must stop and return the + value to its caller. */ + +static bfd_reloc_status_type +init_insn_reloc (abfd, + reloc_entry, + symbol, + data, + input_section, + output_bfd, + prelocation, + pinsn) + bfd *abfd; + arelent *reloc_entry; + asymbol *symbol; + PTR data; + asection *input_section; + bfd *output_bfd; + bfd_vma *prelocation; + bfd_vma *pinsn; +{ + bfd_vma relocation; + reloc_howto_type *howto = reloc_entry->howto; + + if (output_bfd != (bfd *) NULL + && (symbol->flags & BSF_SECTION_SYM) == 0 + && (! howto->partial_inplace + || reloc_entry->addend == 0)) + { + reloc_entry->address += input_section->output_offset; + return bfd_reloc_ok; + } + + /* This works because partial_inplace == false. */ + if (output_bfd != NULL) + return bfd_reloc_continue; + + if (reloc_entry->address > input_section->_cooked_size) + return bfd_reloc_outofrange; + + relocation = (symbol->value + + symbol->section->output_section->vma + + symbol->section->output_offset); + relocation += reloc_entry->addend; + if (howto->pc_relative) + { + relocation -= (input_section->output_section->vma + + input_section->output_offset); + relocation -= reloc_entry->address; + } + + *prelocation = relocation; + *pinsn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); + return bfd_reloc_other; +} + +/* For unsupported relocs. */ + +static bfd_reloc_status_type +sparc_elf_notsup_reloc (abfd, + reloc_entry, + symbol, + data, + input_section, + output_bfd, + error_message) + bfd *abfd; + arelent *reloc_entry; + asymbol *symbol; + PTR data; + asection *input_section; + bfd *output_bfd; + char **error_message; +{ + return bfd_reloc_notsupported; +} + +/* Handle the WDISP16 reloc. */ + +static bfd_reloc_status_type +sparc_elf_wdisp16_reloc (abfd, reloc_entry, symbol, data, input_section, + output_bfd, error_message) + bfd *abfd; + arelent *reloc_entry; + asymbol *symbol; + PTR data; + asection *input_section; + bfd *output_bfd; + char **error_message; +{ + bfd_vma relocation; + bfd_vma insn; + bfd_reloc_status_type status; + + status = init_insn_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, &relocation, &insn); + if (status != bfd_reloc_other) + return status; + + insn = (insn & ~0x303fff) | ((((relocation >> 2) & 0xc000) << 6) + | ((relocation >> 2) & 0x3fff)); + bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); + + if ((bfd_signed_vma) relocation < - 0x40000 + || (bfd_signed_vma) relocation > 0x3ffff) + return bfd_reloc_overflow; + else + return bfd_reloc_ok; +} + +/* Handle the HIX22 reloc. */ + +static bfd_reloc_status_type +sparc_elf_hix22_reloc (abfd, + reloc_entry, + symbol, + data, + input_section, + output_bfd, + error_message) + bfd *abfd; + arelent *reloc_entry; + asymbol *symbol; + PTR data; + asection *input_section; + bfd *output_bfd; + char **error_message; +{ + bfd_vma relocation; + bfd_vma insn; + bfd_reloc_status_type status; + + status = init_insn_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, &relocation, &insn); + if (status != bfd_reloc_other) + return status; + + relocation ^= MINUS_ONE; + insn = (insn & ~0x3fffff) | ((relocation >> 10) & 0x3fffff); + bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); + + if ((relocation & ~ (bfd_vma) 0xffffffff) != 0) + return bfd_reloc_overflow; + else + return bfd_reloc_ok; +} + +/* Handle the LOX10 reloc. */ + +static bfd_reloc_status_type +sparc_elf_lox10_reloc (abfd, + reloc_entry, + symbol, + data, + input_section, + output_bfd, + error_message) + bfd *abfd; + arelent *reloc_entry; + asymbol *symbol; + PTR data; + asection *input_section; + bfd *output_bfd; + char **error_message; +{ + bfd_vma relocation; + bfd_vma insn; + bfd_reloc_status_type status; + + status = init_insn_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, &relocation, &insn); + if (status != bfd_reloc_other) + return status; + + insn = (insn & ~0x1fff) | 0x1c00 | (relocation & 0x3ff); + bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); + + return bfd_reloc_ok; +} + +/* PLT/GOT stuff */ + +/* Both the headers and the entries are icache aligned. */ +#define PLT_ENTRY_SIZE 32 +#define PLT_HEADER_SIZE (4 * PLT_ENTRY_SIZE) +#define LARGE_PLT_THRESHOLD 32768 +#define GOT_RESERVED_ENTRIES 1 + +#define ELF_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1" + + +/* Fill in the .plt section. */ + +static void +sparc64_elf_build_plt (output_bfd, contents, nentries) + bfd *output_bfd; + unsigned char *contents; + int nentries; +{ + const unsigned int nop = 0x01000000; + int i, j; + + /* The first four entries are reserved, and are initially undefined. + We fill them with `illtrap 0' to force ld.so to do something. */ + + for (i = 0; i < PLT_HEADER_SIZE/4; ++i) + bfd_put_32 (output_bfd, 0, contents+i*4); + + /* The first 32768 entries are close enough to plt1 to get there via + a straight branch. */ + + for (i = 4; i < LARGE_PLT_THRESHOLD && i < nentries; ++i) + { + unsigned char *entry = contents + i * PLT_ENTRY_SIZE; + unsigned int sethi, ba; + + /* sethi (. - plt0), %g1 */ + sethi = 0x03000000 | (i * PLT_ENTRY_SIZE); + + /* ba,a,pt %icc, plt1 */ + ba = 0x30480000 | (((contents+PLT_ENTRY_SIZE) - (entry+4)) / 4 & 0x7ffff); + + bfd_put_32 (output_bfd, sethi, entry); + bfd_put_32 (output_bfd, ba, entry+4); + bfd_put_32 (output_bfd, nop, entry+8); + bfd_put_32 (output_bfd, nop, entry+12); + bfd_put_32 (output_bfd, nop, entry+16); + bfd_put_32 (output_bfd, nop, entry+20); + bfd_put_32 (output_bfd, nop, entry+24); + bfd_put_32 (output_bfd, nop, entry+28); + } + + /* Now the tricky bit. Entries 32768 and higher are grouped in blocks of + 160: 160 entries and 160 pointers. This is to separate code from data, + which is much friendlier on the cache. */ + + for (; i < nentries; i += 160) + { + int block = (i + 160 <= nentries ? 160 : nentries - i); + for (j = 0; j < block; ++j) + { + unsigned char *entry, *ptr; + unsigned int ldx; + + entry = contents + i*PLT_ENTRY_SIZE + j*4*6; + ptr = contents + i*PLT_ENTRY_SIZE + block*4*6 + j*8; + + /* ldx [%o7 + ptr - entry+4], %g1 */ + ldx = 0xc25be000 | ((ptr - entry+4) & 0x1fff); + + bfd_put_32 (output_bfd, 0x8a10000f, entry); /* mov %o7,%g5 */ + bfd_put_32 (output_bfd, 0x40000002, entry+4); /* call .+8 */ + bfd_put_32 (output_bfd, nop, entry+8); /* nop */ + bfd_put_32 (output_bfd, ldx, entry+12); /* ldx [%o7+P],%g1 */ + bfd_put_32 (output_bfd, 0x83c3c001, entry+16); /* jmpl %o7+%g1,%g1 */ + bfd_put_32 (output_bfd, 0x9e100005, entry+20); /* mov %g5,%o7 */ + + bfd_put_64 (output_bfd, contents - entry+4, ptr); + } + } +} + +/* Return the offset of a particular plt entry within the .plt section. */ + +static bfd_vma +sparc64_elf_plt_entry_offset (index) + int index; +{ + int block, ofs; + + if (index < LARGE_PLT_THRESHOLD) + return index * PLT_ENTRY_SIZE; + + /* See above for details. */ + + block = (index - LARGE_PLT_THRESHOLD) / 160; + ofs = (index - LARGE_PLT_THRESHOLD) % 160; + + return ((bfd_vma)(LARGE_PLT_THRESHOLD + block*160) * PLT_ENTRY_SIZE + + ofs * 6*4); +} + +static bfd_vma +sparc64_elf_plt_ptr_offset (index, max) + int index, max; +{ + int block, ofs, last; + + BFD_ASSERT(index >= LARGE_PLT_THRESHOLD); + + /* See above for details. */ + + block = (index - LARGE_PLT_THRESHOLD) / 160; + ofs = (index - LARGE_PLT_THRESHOLD) % 160; + last = (max - LARGE_PLT_THRESHOLD) % 160; + + return ((LARGE_PLT_THRESHOLD + block*160) * PLT_ENTRY_SIZE + + last * 6*4 + + ofs * 8); +} + + + +/* Look through the relocs for a section during the first phase, and + allocate space in the global offset table or procedure linkage + table. */ + +static boolean +sparc64_elf_check_relocs (abfd, info, sec, relocs) + bfd *abfd; + struct bfd_link_info *info; + asection *sec; + const Elf_Internal_Rela *relocs; +{ + bfd *dynobj; + Elf_Internal_Shdr *symtab_hdr; + struct elf_link_hash_entry **sym_hashes; + bfd_vma *local_got_offsets; + const Elf_Internal_Rela *rel; + const Elf_Internal_Rela *rel_end; + asection *sgot; + asection *srelgot; + asection *sreloc; + + if (info->relocateable || !(sec->flags & SEC_ALLOC)) + return true; + + dynobj = elf_hash_table (info)->dynobj; + symtab_hdr = &elf_tdata (abfd)->symtab_hdr; + sym_hashes = elf_sym_hashes (abfd); + local_got_offsets = elf_local_got_offsets (abfd); + + sgot = NULL; + srelgot = NULL; + sreloc = NULL; + + rel_end = relocs + sec->reloc_count; + for (rel = relocs; rel < rel_end; rel++) + { + unsigned long r_symndx; + struct elf_link_hash_entry *h; + + r_symndx = ELF64_R_SYM (rel->r_info); + if (r_symndx < symtab_hdr->sh_info) + h = NULL; + else + h = sym_hashes[r_symndx - symtab_hdr->sh_info]; + + switch (ELF64_R_TYPE (rel->r_info)) + { + case R_SPARC_GOT10: + case R_SPARC_GOT13: + case R_SPARC_GOT22: + /* This symbol requires a global offset table entry. */ + + if (dynobj == NULL) + { + /* Create the .got section. */ + elf_hash_table (info)->dynobj = dynobj = abfd; + if (! _bfd_elf_create_got_section (dynobj, info)) + return false; + } + + if (sgot == NULL) + { + sgot = bfd_get_section_by_name (dynobj, ".got"); + BFD_ASSERT (sgot != NULL); + } + + if (srelgot == NULL && (h != NULL || info->shared)) + { + srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); + if (srelgot == NULL) + { + srelgot = bfd_make_section (dynobj, ".rela.got"); + if (srelgot == NULL + || ! bfd_set_section_flags (dynobj, srelgot, + (SEC_ALLOC + | SEC_LOAD + | SEC_HAS_CONTENTS + | SEC_IN_MEMORY + | SEC_LINKER_CREATED + | SEC_READONLY)) + || ! bfd_set_section_alignment (dynobj, srelgot, 3)) + return false; + } + } + + if (h != NULL) + { + if (h->got.offset != (bfd_vma) -1) + { + /* We have already allocated space in the .got. */ + break; + } + h->got.offset = sgot->_raw_size; + + /* Make sure this symbol is output as a dynamic symbol. */ + if (h->dynindx == -1) + { + if (! bfd_elf64_link_record_dynamic_symbol (info, h)) + return false; + } + + srelgot->_raw_size += sizeof (Elf64_External_Rela); + } + else + { + /* This is a global offset table entry for a local + symbol. */ + if (local_got_offsets == NULL) + { + size_t size; + register unsigned int i; + + size = symtab_hdr->sh_info * sizeof (bfd_vma); + local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size); + if (local_got_offsets == NULL) + return false; + elf_local_got_offsets (abfd) = local_got_offsets; + for (i = 0; i < symtab_hdr->sh_info; i++) + local_got_offsets[i] = (bfd_vma) -1; + } + if (local_got_offsets[r_symndx] != (bfd_vma) -1) + { + /* We have already allocated space in the .got. */ + break; + } + local_got_offsets[r_symndx] = sgot->_raw_size; + + if (info->shared) + { + /* If we are generating a shared object, we need to + output a R_SPARC_RELATIVE reloc so that the + dynamic linker can adjust this GOT entry. */ + srelgot->_raw_size += sizeof (Elf64_External_Rela); + } + } + + sgot->_raw_size += 8; + +#if 0 + /* Doesn't work for 64-bit -fPIC, since sethi/or builds + unsigned numbers. If we permit ourselves to modify + code so we get sethi/xor, this could work. + Question: do we consider conditionally re-enabling + this for -fpic, once we know about object code models? */ + /* If the .got section is more than 0x1000 bytes, we add + 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13 + bit relocations have a greater chance of working. */ + if (sgot->_raw_size >= 0x1000 + && elf_hash_table (info)->hgot->root.u.def.value == 0) + elf_hash_table (info)->hgot->root.u.def.value = 0x1000; +#endif + + break; + + case R_SPARC_WPLT30: + case R_SPARC_PLT32: + case R_SPARC_HIPLT22: + case R_SPARC_LOPLT10: + case R_SPARC_PCPLT32: + case R_SPARC_PCPLT22: + case R_SPARC_PCPLT10: + case R_SPARC_PLT64: + /* This symbol requires a procedure linkage table entry. We + actually build the entry in adjust_dynamic_symbol, + because this might be a case of linking PIC code without + linking in any dynamic objects, in which case we don't + need to generate a procedure linkage table after all. */ + + if (h == NULL) + { + /* It does not make sense to have a procedure linkage + table entry for a local symbol. */ + bfd_set_error (bfd_error_bad_value); + return false; + } + + /* Make sure this symbol is output as a dynamic symbol. */ + if (h->dynindx == -1) + { + if (! bfd_elf64_link_record_dynamic_symbol (info, h)) + return false; + } + + h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; + break; + + case R_SPARC_PC10: + case R_SPARC_PC22: + case R_SPARC_PC_HH22: + case R_SPARC_PC_HM10: + case R_SPARC_PC_LM22: + if (h != NULL + && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) + break; + /* Fall through. */ + case R_SPARC_DISP8: + case R_SPARC_DISP16: + case R_SPARC_DISP32: + case R_SPARC_DISP64: + case R_SPARC_WDISP30: + case R_SPARC_WDISP22: + case R_SPARC_WDISP19: + case R_SPARC_WDISP16: + if (h == NULL) + break; + /* Fall through. */ + case R_SPARC_8: + case R_SPARC_16: + case R_SPARC_32: + case R_SPARC_HI22: + case R_SPARC_22: + case R_SPARC_13: + case R_SPARC_LO10: + case R_SPARC_UA32: + case R_SPARC_10: + case R_SPARC_11: + case R_SPARC_64: + case R_SPARC_OLO10: + case R_SPARC_HH22: + case R_SPARC_HM10: + case R_SPARC_LM22: + case R_SPARC_7: + case R_SPARC_5: + case R_SPARC_6: + case R_SPARC_HIX22: + case R_SPARC_LOX10: + case R_SPARC_H44: + case R_SPARC_M44: + case R_SPARC_L44: + case R_SPARC_UA64: + case R_SPARC_UA16: + /* When creating a shared object, we must copy these relocs + into the output file. We create a reloc section in + dynobj and make room for the reloc. + + But don't do this for debugging sections -- this shows up + with DWARF2 -- first because they are not loaded, and + second because DWARF sez the debug info is not to be + biased by the load address. */ + if (info->shared && (sec->flags & SEC_ALLOC)) + { + if (sreloc == NULL) + { + const char *name; + + name = (bfd_elf_string_from_elf_section + (abfd, + elf_elfheader (abfd)->e_shstrndx, + elf_section_data (sec)->rel_hdr.sh_name)); + if (name == NULL) + return false; + + BFD_ASSERT (strncmp (name, ".rela", 5) == 0 + && strcmp (bfd_get_section_name (abfd, sec), + name + 5) == 0); + + sreloc = bfd_get_section_by_name (dynobj, name); + if (sreloc == NULL) + { + flagword flags; + + sreloc = bfd_make_section (dynobj, name); + flags = (SEC_HAS_CONTENTS | SEC_READONLY + | SEC_IN_MEMORY | SEC_LINKER_CREATED); + if ((sec->flags & SEC_ALLOC) != 0) + flags |= SEC_ALLOC | SEC_LOAD; + if (sreloc == NULL + || ! bfd_set_section_flags (dynobj, sreloc, flags) + || ! bfd_set_section_alignment (dynobj, sreloc, 3)) + return false; + } + } + + sreloc->_raw_size += sizeof (Elf64_External_Rela); + } + break; + + case R_SPARC_REGISTER: + /* Nothing to do. */ + break; + + default: + (*_bfd_error_handler)(_("%s: check_relocs: unhandled reloc type %d"), + bfd_get_filename(abfd), + ELF64_R_TYPE (rel->r_info)); + return false; + } + } + + return true; +} + +/* Adjust a symbol defined by a dynamic object and referenced by a + regular object. The current definition is in some section of the + dynamic object, but we're not including those sections. We have to + change the definition to something the rest of the link can + understand. */ + +static boolean +sparc64_elf_adjust_dynamic_symbol (info, h) + struct bfd_link_info *info; + struct elf_link_hash_entry *h; +{ + bfd *dynobj; + asection *s; + unsigned int power_of_two; + + dynobj = elf_hash_table (info)->dynobj; + + /* Make sure we know what is going on here. */ + BFD_ASSERT (dynobj != NULL + && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) + || h->weakdef != NULL + || ((h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_DYNAMIC) != 0 + && (h->elf_link_hash_flags + & ELF_LINK_HASH_REF_REGULAR) != 0 + && (h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) == 0))); + + /* If this is a function, put it in the procedure linkage table. We + will fill in the contents of the procedure linkage table later + (although we could actually do it here). The STT_NOTYPE + condition is a hack specifically for the Oracle libraries + delivered for Solaris; for some inexplicable reason, they define + some of their functions as STT_NOTYPE when they really should be + STT_FUNC. */ + if (h->type == STT_FUNC + || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0 + || (h->type == STT_NOTYPE + && (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak) + && (h->root.u.def.section->flags & SEC_CODE) != 0)) + { + if (! elf_hash_table (info)->dynamic_sections_created) + { + /* This case can occur if we saw a WPLT30 reloc in an input + file, but none of the input files were dynamic objects. + In such a case, we don't actually need to build a + procedure linkage table, and we can just do a WDISP30 + reloc instead. */ + BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0); + return true; + } + + s = bfd_get_section_by_name (dynobj, ".plt"); + BFD_ASSERT (s != NULL); + + /* The first four bit in .plt is reserved. */ + if (s->_raw_size == 0) + s->_raw_size = PLT_HEADER_SIZE; + + /* If this symbol is not defined in a regular file, and we are + not generating a shared library, then set the symbol to this + location in the .plt. This is required to make function + pointers compare as equal between the normal executable and + the shared library. */ + if (! info->shared + && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) + { + h->root.u.def.section = s; + h->root.u.def.value = s->_raw_size; + } + + /* To simplify matters later, just store the plt index here. */ + h->plt.offset = s->_raw_size / PLT_ENTRY_SIZE; + + /* Make room for this entry. */ + s->_raw_size += PLT_ENTRY_SIZE; + + /* We also need to make an entry in the .rela.plt section. */ + + s = bfd_get_section_by_name (dynobj, ".rela.plt"); + BFD_ASSERT (s != NULL); + + /* The first plt entries are reserved, and the relocations must + pair up exactly. */ + if (s->_raw_size == 0) + s->_raw_size += (PLT_HEADER_SIZE/PLT_ENTRY_SIZE + * sizeof (Elf64_External_Rela)); + + s->_raw_size += sizeof (Elf64_External_Rela); + + /* The procedure linkage table size is bounded by the magnitude + of the offset we can describe in the entry. */ + if (s->_raw_size >= (bfd_vma)1 << 32) + { + bfd_set_error (bfd_error_bad_value); + return false; + } + + return true; + } + + /* If this is a weak symbol, and there is a real definition, the + processor independent code will have arranged for us to see the + real definition first, and we can just use the same value. */ + if (h->weakdef != NULL) + { + BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined + || h->weakdef->root.type == bfd_link_hash_defweak); + h->root.u.def.section = h->weakdef->root.u.def.section; + h->root.u.def.value = h->weakdef->root.u.def.value; + return true; + } + + /* This is a reference to a symbol defined by a dynamic object which + is not a function. */ + + /* If we are creating a shared library, we must presume that the + only references to the symbol are via the global offset table. + For such cases we need not do anything here; the relocations will + be handled correctly by relocate_section. */ + if (info->shared) + return true; + + /* We must allocate the symbol in our .dynbss section, which will + become part of the .bss section of the executable. There will be + an entry for this symbol in the .dynsym section. The dynamic + object will contain position independent code, so all references + from the dynamic object to this symbol will go through the global + offset table. The dynamic linker will use the .dynsym entry to + determine the address it must put in the global offset table, so + both the dynamic object and the regular object will refer to the + same memory location for the variable. */ + + s = bfd_get_section_by_name (dynobj, ".dynbss"); + BFD_ASSERT (s != NULL); + + /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker + to copy the initial value out of the dynamic object and into the + runtime process image. We need to remember the offset into the + .rel.bss section we are going to use. */ + if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) + { + asection *srel; + + srel = bfd_get_section_by_name (dynobj, ".rela.bss"); + BFD_ASSERT (srel != NULL); + srel->_raw_size += sizeof (Elf64_External_Rela); + h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; + } + + /* We need to figure out the alignment required for this symbol. I + have no idea how ELF linkers handle this. 16-bytes is the size + of the largest type that requires hard alignment -- long double. */ + power_of_two = bfd_log2 (h->size); + if (power_of_two > 4) + power_of_two = 4; + + /* Apply the required alignment. */ + s->_raw_size = BFD_ALIGN (s->_raw_size, + (bfd_size_type) (1 << power_of_two)); + if (power_of_two > bfd_get_section_alignment (dynobj, s)) + { + if (! bfd_set_section_alignment (dynobj, s, power_of_two)) + return false; + } + + /* Define the symbol as being at this point in the section. */ + h->root.u.def.section = s; + h->root.u.def.value = s->_raw_size; + + /* Increment the section size to make room for the symbol. */ + s->_raw_size += h->size; + + return true; +} + +/* Set the sizes of the dynamic sections. */ + +static boolean +sparc64_elf_size_dynamic_sections (output_bfd, info) + bfd *output_bfd; + struct bfd_link_info *info; +{ + bfd *dynobj; + asection *s; + boolean reltext; + boolean relplt; + + dynobj = elf_hash_table (info)->dynobj; + BFD_ASSERT (dynobj != NULL); + + if (elf_hash_table (info)->dynamic_sections_created) + { + /* Set the contents of the .interp section to the interpreter. */ + if (! info->shared) + { + s = bfd_get_section_by_name (dynobj, ".interp"); + BFD_ASSERT (s != NULL); + s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; + s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; + } + } + else + { + /* We may have created entries in the .rela.got section. + However, if we are not creating the dynamic sections, we will + not actually use these entries. Reset the size of .rela.got, + which will cause it to get stripped from the output file + below. */ + s = bfd_get_section_by_name (dynobj, ".rela.got"); + if (s != NULL) + s->_raw_size = 0; + } + + /* The check_relocs and adjust_dynamic_symbol entry points have + determined the sizes of the various dynamic sections. Allocate + memory for them. */ + reltext = false; + relplt = false; + for (s = dynobj->sections; s != NULL; s = s->next) + { + const char *name; + boolean strip; + + if ((s->flags & SEC_LINKER_CREATED) == 0) + continue; + + /* It's OK to base decisions on the section name, because none + of the dynobj section names depend upon the input files. */ + name = bfd_get_section_name (dynobj, s); + + strip = false; + + if (strncmp (name, ".rela", 5) == 0) + { + if (s->_raw_size == 0) + { + /* If we don't need this section, strip it from the + output file. This is to handle .rela.bss and + .rel.plt. We must create it in + create_dynamic_sections, because it must be created + before the linker maps input sections to output + sections. The linker does that before + adjust_dynamic_symbol is called, and it is that + function which decides whether anything needs to go + into these sections. */ + strip = true; + } + else + { + const char *outname; + asection *target; + + /* If this relocation section applies to a read only + section, then we probably need a DT_TEXTREL entry. */ + outname = bfd_get_section_name (output_bfd, + s->output_section); + target = bfd_get_section_by_name (output_bfd, outname + 5); + if (target != NULL + && (target->flags & SEC_READONLY) != 0) + reltext = true; + + if (strcmp (name, ".rela.plt") == 0) + relplt = true; + + /* We use the reloc_count field as a counter if we need + to copy relocs into the output file. */ + s->reloc_count = 0; + } + } + else if (strcmp (name, ".plt") != 0 + && strncmp (name, ".got", 4) != 0) + { + /* It's not one of our sections, so don't allocate space. */ + continue; + } + + if (strip) + { + _bfd_strip_section_from_output (s); + continue; + } + + /* Allocate memory for the section contents. Zero the memory + for the benefit of .rela.plt, which has 4 unused entries + at the beginning, and we don't want garbage. */ + s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); + if (s->contents == NULL && s->_raw_size != 0) + return false; + } + + if (elf_hash_table (info)->dynamic_sections_created) + { + /* Add some entries to the .dynamic section. We fill in the + values later, in sparc64_elf_finish_dynamic_sections, but we + must add the entries now so that we get the correct size for + the .dynamic section. The DT_DEBUG entry is filled in by the + dynamic linker and used by the debugger. */ + if (! info->shared) + { + if (! bfd_elf64_add_dynamic_entry (info, DT_DEBUG, 0)) + return false; + } + + if (relplt) + { + if (! bfd_elf64_add_dynamic_entry (info, DT_PLTGOT, 0) + || ! bfd_elf64_add_dynamic_entry (info, DT_PLTRELSZ, 0) + || ! bfd_elf64_add_dynamic_entry (info, DT_PLTREL, DT_RELA) + || ! bfd_elf64_add_dynamic_entry (info, DT_JMPREL, 0) + || ! bfd_elf64_add_dynamic_entry (info, DT_SPARC_PLTFMT, + (info->shared != 0) + 1)) + return false; + } + + if (! bfd_elf64_add_dynamic_entry (info, DT_RELA, 0) + || ! bfd_elf64_add_dynamic_entry (info, DT_RELASZ, 0) + || ! bfd_elf64_add_dynamic_entry (info, DT_RELAENT, + sizeof (Elf64_External_Rela))) + return false; + + if (reltext) + { + if (! bfd_elf64_add_dynamic_entry (info, DT_TEXTREL, 0)) + return false; + } + } + + /* If we are generating a shared library, we generate a section + symbol for each output section for which we might need to copy + relocs. These are local symbols, which means that they must come + first in the dynamic symbol table. That means we must increment + the dynamic symbol index of every other dynamic symbol. */ + if (info->shared) + { + int c; + + c = 0; + for (s = output_bfd->sections; s != NULL; s = s->next) + { + if ((s->flags & SEC_LINKER_CREATED) != 0 + || (s->flags & SEC_ALLOC) == 0) + continue; + + elf_section_data (s)->dynindx = c + 1; + + /* These symbols will have no names, so we don't need to + fiddle with dynstr_index. */ + + ++c; + } + + elf_link_hash_traverse (elf_hash_table (info), + sparc64_elf_adjust_dynindx, + (PTR) &c); + elf_hash_table (info)->dynsymcount += c; + } + + return true; +} + +/* Increment the index of a dynamic symbol by a given amount. Called + via elf_link_hash_traverse. */ + +static boolean +sparc64_elf_adjust_dynindx (h, cparg) + struct elf_link_hash_entry *h; + PTR cparg; +{ + int *cp = (int *) cparg; + + if (h->dynindx != -1) + h->dynindx += *cp; + return true; +} + + +/* Relocate a SPARC64 ELF section. */ + +static boolean +sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, + contents, relocs, local_syms, local_sections) + bfd *output_bfd; + struct bfd_link_info *info; + bfd *input_bfd; + asection *input_section; + bfd_byte *contents; + Elf_Internal_Rela *relocs; + Elf_Internal_Sym *local_syms; + asection **local_sections; +{ + bfd *dynobj; + Elf_Internal_Shdr *symtab_hdr; + struct elf_link_hash_entry **sym_hashes; + bfd_vma *local_got_offsets; + bfd_vma got_base; + asection *sgot; + asection *splt; + asection *sreloc; + Elf_Internal_Rela *rel; + Elf_Internal_Rela *relend; + + dynobj = elf_hash_table (info)->dynobj; + symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; + sym_hashes = elf_sym_hashes (input_bfd); + local_got_offsets = elf_local_got_offsets (input_bfd); + + if (elf_hash_table(info)->hgot == NULL) + got_base = 0; + else + got_base = elf_hash_table (info)->hgot->root.u.def.value; + + sgot = splt = sreloc = NULL; + + rel = relocs; + relend = relocs + input_section->reloc_count; + for (; rel < relend; rel++) + { + int r_type; + reloc_howto_type *howto; + long r_symndx; + struct elf_link_hash_entry *h; + Elf_Internal_Sym *sym; + asection *sec; + bfd_vma relocation; + bfd_reloc_status_type r; + + r_type = ELF64_R_TYPE (rel->r_info); + if (r_type < 0 || r_type >= (int) R_SPARC_max) + { + bfd_set_error (bfd_error_bad_value); + return false; + } + howto = sparc64_elf_howto_table + r_type; + + r_symndx = ELF64_R_SYM (rel->r_info); + + if (info->relocateable) + { + /* This is a relocateable link. We don't have to change + anything, unless the reloc is against a section symbol, + in which case we have to adjust according to where the + section symbol winds up in the output section. */ + if (r_symndx < symtab_hdr->sh_info) + { + sym = local_syms + r_symndx; + if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) + { + sec = local_sections[r_symndx]; + rel->r_addend += sec->output_offset + sym->st_value; + } + } + + continue; + } + + /* This is a final link. */ + h = NULL; + sym = NULL; + sec = NULL; + if (r_symndx < symtab_hdr->sh_info) + { + sym = local_syms + r_symndx; + sec = local_sections[r_symndx]; + relocation = (sec->output_section->vma + + sec->output_offset + + sym->st_value); + } + else + { + h = sym_hashes[r_symndx - symtab_hdr->sh_info]; + while (h->root.type == bfd_link_hash_indirect + || h->root.type == bfd_link_hash_warning) + h = (struct elf_link_hash_entry *) h->root.u.i.link; + if (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak) + { + boolean skip_it = false; + sec = h->root.u.def.section; + + switch (r_type) + { + case R_SPARC_WPLT30: + case R_SPARC_PLT32: + case R_SPARC_HIPLT22: + case R_SPARC_LOPLT10: + case R_SPARC_PCPLT32: + case R_SPARC_PCPLT22: + case R_SPARC_PCPLT10: + case R_SPARC_PLT64: + if (h->plt.offset != (bfd_vma) -1) + skip_it = true; + break; + + case R_SPARC_GOT10: + case R_SPARC_GOT13: + case R_SPARC_GOT22: + if (elf_hash_table(info)->dynamic_sections_created + && (!info->shared + || (!info->symbolic && h->dynindx != -1) + || !(h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR))) + skip_it = true; + break; + + case R_SPARC_PC10: + case R_SPARC_PC22: + case R_SPARC_PC_HH22: + case R_SPARC_PC_HM10: + case R_SPARC_PC_LM22: + if (!strcmp(h->root.root.string, "_GLOBAL_OFFSET_TABLE_")) + break; + /* FALLTHRU */ + + case R_SPARC_8: + case R_SPARC_16: + case R_SPARC_32: + case R_SPARC_DISP8: + case R_SPARC_DISP16: + case R_SPARC_DISP32: + case R_SPARC_WDISP30: + case R_SPARC_WDISP22: + case R_SPARC_HI22: + case R_SPARC_22: + case R_SPARC_13: + case R_SPARC_LO10: + case R_SPARC_UA32: + case R_SPARC_10: + case R_SPARC_11: + case R_SPARC_64: + case R_SPARC_OLO10: + case R_SPARC_HH22: + case R_SPARC_HM10: + case R_SPARC_LM22: + case R_SPARC_WDISP19: + case R_SPARC_WDISP16: + case R_SPARC_7: + case R_SPARC_5: + case R_SPARC_6: + case R_SPARC_DISP64: + case R_SPARC_HIX22: + case R_SPARC_LOX10: + case R_SPARC_H44: + case R_SPARC_M44: + case R_SPARC_L44: + case R_SPARC_UA64: + case R_SPARC_UA16: + if (info->shared + && ((!info->symbolic && h->dynindx != -1) + || !(h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR))) + skip_it = true; + break; + } + + if (skip_it) + { + /* In these cases, we don't need the relocation + value. We check specially because in some + obscure cases sec->output_section will be NULL. */ + relocation = 0; + } + else + { + relocation = (h->root.u.def.value + + sec->output_section->vma + + sec->output_offset); + } + } + else if (h->root.type == bfd_link_hash_undefweak) + relocation = 0; + else if (info->shared && !info->symbolic && !info->no_undefined) + relocation = 0; + else + { + if (! ((*info->callbacks->undefined_symbol) + (info, h->root.root.string, input_bfd, + input_section, rel->r_offset))) + return false; + relocation = 0; + } + } + + /* When generating a shared object, these relocations are copied + into the output file to be resolved at run time. */ + if (info->shared && (input_section->flags & SEC_ALLOC)) + { + switch (r_type) + { + case R_SPARC_PC10: + case R_SPARC_PC22: + case R_SPARC_PC_HH22: + case R_SPARC_PC_HM10: + case R_SPARC_PC_LM22: + if (h != NULL + && !strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_")) + break; + /* Fall through. */ + case R_SPARC_DISP8: + case R_SPARC_DISP16: + case R_SPARC_DISP32: + case R_SPARC_WDISP30: + case R_SPARC_WDISP22: + case R_SPARC_WDISP19: + case R_SPARC_WDISP16: + case R_SPARC_DISP64: + if (h == NULL) + break; + /* Fall through. */ + case R_SPARC_8: + case R_SPARC_16: + case R_SPARC_32: + case R_SPARC_HI22: + case R_SPARC_22: + case R_SPARC_13: + case R_SPARC_LO10: + case R_SPARC_UA32: + case R_SPARC_10: + case R_SPARC_11: + case R_SPARC_64: + case R_SPARC_OLO10: + case R_SPARC_HH22: + case R_SPARC_HM10: + case R_SPARC_LM22: + case R_SPARC_7: + case R_SPARC_5: + case R_SPARC_6: + case R_SPARC_HIX22: + case R_SPARC_LOX10: + case R_SPARC_H44: + case R_SPARC_M44: + case R_SPARC_L44: + case R_SPARC_UA64: + case R_SPARC_UA16: + { + Elf_Internal_Rela outrel; + boolean skip; + + if (sreloc == NULL) + { + const char *name = + (bfd_elf_string_from_elf_section + (input_bfd, + elf_elfheader (input_bfd)->e_shstrndx, + elf_section_data (input_section)->rel_hdr.sh_name)); + + if (name == NULL) + return false; + + BFD_ASSERT (strncmp (name, ".rela", 5) == 0 + && strcmp (bfd_get_section_name(input_bfd, + input_section), + name + 5) == 0); + + sreloc = bfd_get_section_by_name (dynobj, name); + BFD_ASSERT (sreloc != NULL); + } + + skip = false; + + if (elf_section_data (input_section)->stab_info == NULL) + outrel.r_offset = rel->r_offset; + else + { + bfd_vma off; + + off = (_bfd_stab_section_offset + (output_bfd, &elf_hash_table (info)->stab_info, + input_section, + &elf_section_data (input_section)->stab_info, + rel->r_offset)); + if (off == MINUS_ONE) + skip = true; + outrel.r_offset = off; + } + + outrel.r_offset += (input_section->output_section->vma + + input_section->output_offset); + + /* Optimize unaligned reloc usage now that we know where + it finally resides. */ + switch (r_type) + { + case R_SPARC_16: + if (outrel.r_offset & 1) r_type = R_SPARC_UA16; + break; + case R_SPARC_UA16: + if (!(outrel.r_offset & 1)) r_type = R_SPARC_16; + break; + case R_SPARC_32: + if (outrel.r_offset & 3) r_type = R_SPARC_UA32; + break; + case R_SPARC_UA32: + if (!(outrel.r_offset & 3)) r_type = R_SPARC_32; + break; + case R_SPARC_64: + if (outrel.r_offset & 7) r_type = R_SPARC_UA64; + break; + case R_SPARC_UA64: + if (!(outrel.r_offset & 7)) r_type = R_SPARC_64; + break; + } + + if (skip) + memset (&outrel, 0, sizeof outrel); + /* h->dynindx may be -1 if the symbol was marked to + become local. */ + else if (h != NULL + && ((! info->symbolic && h->dynindx != -1) + || (h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) == 0)) + { + BFD_ASSERT (h->dynindx != -1); + outrel.r_info = ELF64_R_INFO (h->dynindx, r_type); + outrel.r_addend = rel->r_addend; + } + else + { + if (r_type == R_SPARC_64) + { + outrel.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE); + outrel.r_addend = relocation + rel->r_addend; + } + else + { + long indx; + + if (h == NULL) + sec = local_sections[r_symndx]; + else + { + BFD_ASSERT (h->root.type == bfd_link_hash_defined + || (h->root.type + == bfd_link_hash_defweak)); + sec = h->root.u.def.section; + } + if (sec != NULL && bfd_is_abs_section (sec)) + indx = 0; + else if (sec == NULL || sec->owner == NULL) + { + bfd_set_error (bfd_error_bad_value); + return false; + } + else + { + asection *osec; + + osec = sec->output_section; + indx = elf_section_data (osec)->dynindx; + + /* FIXME: we really should be able to link non-pic + shared libraries. */ + if (indx == 0) + { + BFD_FAIL (); + (*_bfd_error_handler) + (_("%s: probably compiled without -fPIC?"), + bfd_get_filename (input_bfd)); + bfd_set_error (bfd_error_bad_value); + return false; + } + } + + outrel.r_info = ELF64_R_INFO (indx, r_type); + + /* For non-RELATIVE dynamic relocations, we keep the + same symbol, and so generally the same addend. But + we do need to adjust those relocations referencing + sections. */ + outrel.r_addend = rel->r_addend; + if (r_symndx < symtab_hdr->sh_info + && ELF_ST_TYPE (sym->st_info) == STT_SECTION) + outrel.r_addend += sec->output_offset+sym->st_value; + } + } + + bfd_elf64_swap_reloca_out (output_bfd, &outrel, + (((Elf64_External_Rela *) + sreloc->contents) + + sreloc->reloc_count)); + ++sreloc->reloc_count; + + /* This reloc will be computed at runtime, so there's no + need to do anything now, unless this is a RELATIVE + reloc in an unallocated section. */ + if (skip + || (input_section->flags & SEC_ALLOC) != 0 + || ELF64_R_TYPE (outrel.r_info) != R_SPARC_RELATIVE) + continue; + } + break; + } + } + + switch (r_type) + { + case R_SPARC_GOT10: + case R_SPARC_GOT13: + case R_SPARC_GOT22: + /* Relocation is to the entry for this symbol in the global + offset table. */ + if (sgot == NULL) + { + sgot = bfd_get_section_by_name (dynobj, ".got"); + BFD_ASSERT (sgot != NULL); + } + + if (h != NULL) + { + bfd_vma off = h->got.offset; + BFD_ASSERT (off != (bfd_vma) -1); + + if (! elf_hash_table (info)->dynamic_sections_created + || (info->shared + && (info->symbolic || h->dynindx == -1) + && (h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR))) + { + /* This is actually a static link, or it is a -Bsymbolic + link and the symbol is defined locally, or the symbol + was forced to be local because of a version file. We + must initialize this entry in the global offset table. + Since the offset must always be a multiple of 8, we + use the least significant bit to record whether we + have initialized it already. + + When doing a dynamic link, we create a .rela.got + relocation entry to initialize the value. This is + done in the finish_dynamic_symbol routine. */ + + if ((off & 1) != 0) + off &= ~1; + else + { + bfd_put_64 (output_bfd, relocation, + sgot->contents + off); + h->got.offset |= 1; + } + } + relocation = sgot->output_offset + off - got_base; + } + else + { + bfd_vma off; + + BFD_ASSERT (local_got_offsets != NULL); + off = local_got_offsets[r_symndx]; + BFD_ASSERT (off != (bfd_vma) -1); + + /* The offset must always be a multiple of 8. We use + the least significant bit to record whether we have + already processed this entry. */ + if ((off & 1) != 0) + off &= ~1; + else + { + bfd_put_64 (output_bfd, relocation, sgot->contents + off); + local_got_offsets[r_symndx] |= 1; + + if (info->shared) + { + asection *srelgot; + Elf_Internal_Rela outrel; + + /* We need to generate a R_SPARC_RELATIVE reloc + for the dynamic linker. */ + srelgot = bfd_get_section_by_name(dynobj, ".rela.got"); + BFD_ASSERT (srelgot != NULL); + + outrel.r_offset = (sgot->output_section->vma + + sgot->output_offset + + off); + outrel.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE); + outrel.r_addend = relocation; + bfd_elf64_swap_reloca_out (output_bfd, &outrel, + (((Elf64_External_Rela *) + srelgot->contents) + + srelgot->reloc_count)); + ++srelgot->reloc_count; + } + } + relocation = sgot->output_offset + off - got_base; + } + goto do_default; + + case R_SPARC_WPLT30: + case R_SPARC_PLT32: + case R_SPARC_HIPLT22: + case R_SPARC_LOPLT10: + case R_SPARC_PCPLT32: + case R_SPARC_PCPLT22: + case R_SPARC_PCPLT10: + case R_SPARC_PLT64: + /* Relocation is to the entry for this symbol in the + procedure linkage table. */ + BFD_ASSERT (h != NULL); + + if (h->plt.offset == (bfd_vma) -1) + { + /* We didn't make a PLT entry for this symbol. This + happens when statically linking PIC code, or when + using -Bsymbolic. */ + goto do_default; + } + + if (splt == NULL) + { + splt = bfd_get_section_by_name (dynobj, ".plt"); + BFD_ASSERT (splt != NULL); + } + + relocation = (splt->output_section->vma + + splt->output_offset + + sparc64_elf_plt_entry_offset (h->plt.offset)); + goto do_default; + + case R_SPARC_OLO10: + { + bfd_vma x; + + relocation += rel->r_addend; + relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info); + + x = bfd_get_32 (input_bfd, contents + rel->r_offset); + x = (x & ~0x1fff) | (relocation & 0x1fff); + bfd_put_32 (input_bfd, x, contents + rel->r_offset); + + r = bfd_check_overflow (howto->complain_on_overflow, + howto->bitsize, howto->rightshift, + bfd_arch_bits_per_address (input_bfd), + relocation); + } + break; + + case R_SPARC_WDISP16: + { + bfd_vma x; + + relocation += rel->r_addend; + /* Adjust for pc-relative-ness. */ + relocation -= (input_section->output_section->vma + + input_section->output_offset); + relocation -= rel->r_offset; + + x = bfd_get_32 (input_bfd, contents + rel->r_offset); + x = (x & ~0x303fff) | ((((relocation >> 2) & 0xc000) << 6) + | ((relocation >> 2) & 0x3fff)); + bfd_put_32 (input_bfd, x, contents + rel->r_offset); + + r = bfd_check_overflow (howto->complain_on_overflow, + howto->bitsize, howto->rightshift, + bfd_arch_bits_per_address (input_bfd), + relocation); + } + break; + + case R_SPARC_HIX22: + { + bfd_vma x; + + relocation += rel->r_addend; + relocation = relocation ^ MINUS_ONE; + + x = bfd_get_32 (input_bfd, contents + rel->r_offset); + x = (x & ~0x3fffff) | ((relocation >> 10) & 0x3fffff); + bfd_put_32 (input_bfd, x, contents + rel->r_offset); + + r = bfd_check_overflow (howto->complain_on_overflow, + howto->bitsize, howto->rightshift, + bfd_arch_bits_per_address (input_bfd), + relocation); + } + break; + + case R_SPARC_LOX10: + { + bfd_vma x; + + relocation += rel->r_addend; + relocation = (relocation & 0x3ff) | 0x1c00; + + x = bfd_get_32 (input_bfd, contents + rel->r_offset); + x = (x & ~0x1fff) | relocation; + bfd_put_32 (input_bfd, x, contents + rel->r_offset); + + r = bfd_reloc_ok; + } + break; + + default: + do_default: + r = _bfd_final_link_relocate (howto, input_bfd, input_section, + contents, rel->r_offset, + relocation, rel->r_addend); + break; + } + + switch (r) + { + case bfd_reloc_ok: + break; + + default: + case bfd_reloc_outofrange: + abort (); + + case bfd_reloc_overflow: + { + const char *name; + + if (h != NULL) + { + if (h->root.type == bfd_link_hash_undefweak + && howto->pc_relative) + { + /* Assume this is a call protected by other code that + detect the symbol is undefined. If this is the case, + we can safely ignore the overflow. If not, the + program is hosed anyway, and a little warning isn't + going to help. */ + break; + } + + name = h->root.root.string; + } + else + { + name = (bfd_elf_string_from_elf_section + (input_bfd, + symtab_hdr->sh_link, + sym->st_name)); + if (name == NULL) + return false; + if (*name == '\0') + name = bfd_section_name (input_bfd, sec); + } + if (! ((*info->callbacks->reloc_overflow) + (info, name, howto->name, (bfd_vma) 0, + input_bfd, input_section, rel->r_offset))) + return false; + } + break; + } + } + + return true; +} + +/* Finish up dynamic symbol handling. We set the contents of various + dynamic sections here. */ + +static boolean +sparc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym) + bfd *output_bfd; + struct bfd_link_info *info; + struct elf_link_hash_entry *h; + Elf_Internal_Sym *sym; +{ + bfd *dynobj; + + dynobj = elf_hash_table (info)->dynobj; + + if (h->plt.offset != (bfd_vma) -1) + { + asection *splt; + asection *srela; + Elf_Internal_Rela rela; + + /* This symbol has an entry in the PLT. Set it up. */ + + BFD_ASSERT (h->dynindx != -1); + + splt = bfd_get_section_by_name (dynobj, ".plt"); + srela = bfd_get_section_by_name (dynobj, ".rela.plt"); + BFD_ASSERT (splt != NULL && srela != NULL); + + /* Fill in the entry in the .rela.plt section. */ + + if (h->plt.offset < LARGE_PLT_THRESHOLD) + { + rela.r_offset = sparc64_elf_plt_entry_offset (h->plt.offset); + rela.r_addend = 0; + } + else + { + int max = splt->_raw_size / PLT_ENTRY_SIZE; + rela.r_offset = sparc64_elf_plt_ptr_offset (h->plt.offset, max); + rela.r_addend = -(sparc64_elf_plt_entry_offset (h->plt.offset) + 4); + } + rela.r_offset += (splt->output_section->vma + splt->output_offset); + rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_JMP_SLOT); + + bfd_elf64_swap_reloca_out (output_bfd, &rela, + ((Elf64_External_Rela *) srela->contents + + h->plt.offset)); + + if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) + { + /* Mark the symbol as undefined, rather than as defined in + the .plt section. Leave the value alone. */ + sym->st_shndx = SHN_UNDEF; + } + } + + if (h->got.offset != (bfd_vma) -1) + { + asection *sgot; + asection *srela; + Elf_Internal_Rela rela; + + /* This symbol has an entry in the GOT. Set it up. */ + + sgot = bfd_get_section_by_name (dynobj, ".got"); + srela = bfd_get_section_by_name (dynobj, ".rela.got"); + BFD_ASSERT (sgot != NULL && srela != NULL); + + rela.r_offset = (sgot->output_section->vma + + sgot->output_offset + + (h->got.offset &~ 1)); + + /* If this is a -Bsymbolic link, and the symbol is defined + locally, we just want to emit a RELATIVE reloc. Likewise if + the symbol was forced to be local because of a version file. + The entry in the global offset table will already have been + initialized in the relocate_section function. */ + if (info->shared + && (info->symbolic || h->dynindx == -1) + && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) + { + asection *sec = h->root.u.def.section; + rela.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE); + rela.r_addend = (h->root.u.def.value + + sec->output_section->vma + + sec->output_offset); + } + else + { + bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); + rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_GLOB_DAT); + rela.r_addend = 0; + } + + bfd_elf64_swap_reloca_out (output_bfd, &rela, + ((Elf64_External_Rela *) srela->contents + + srela->reloc_count)); + ++srela->reloc_count; + } + + if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) + { + asection *s; + Elf_Internal_Rela rela; + + /* This symbols needs a copy reloc. Set it up. */ + + BFD_ASSERT (h->dynindx != -1); + + s = bfd_get_section_by_name (h->root.u.def.section->owner, + ".rela.bss"); + BFD_ASSERT (s != NULL); + + rela.r_offset = (h->root.u.def.value + + h->root.u.def.section->output_section->vma + + h->root.u.def.section->output_offset); + rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_COPY); + rela.r_addend = 0; + bfd_elf64_swap_reloca_out (output_bfd, &rela, + ((Elf64_External_Rela *) s->contents + + s->reloc_count)); + ++s->reloc_count; + } + + /* Mark some specially defined symbols as absolute. */ + if (strcmp (h->root.root.string, "_DYNAMIC") == 0 + || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 + || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) + sym->st_shndx = SHN_ABS; + + return true; +} + +/* Finish up the dynamic sections. */ + +static boolean +sparc64_elf_finish_dynamic_sections (output_bfd, info) + bfd *output_bfd; + struct bfd_link_info *info; +{ + bfd *dynobj; + asection *sdyn; + asection *sgot; + + dynobj = elf_hash_table (info)->dynobj; + + sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); + + if (elf_hash_table (info)->dynamic_sections_created) + { + asection *splt; + Elf64_External_Dyn *dyncon, *dynconend; + + splt = bfd_get_section_by_name (dynobj, ".plt"); + BFD_ASSERT (splt != NULL && sdyn != NULL); + + dyncon = (Elf64_External_Dyn *) sdyn->contents; + dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size); + for (; dyncon < dynconend; dyncon++) + { + Elf_Internal_Dyn dyn; + const char *name; + boolean size; + + bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); + + switch (dyn.d_tag) + { + case DT_PLTGOT: name = ".plt"; size = false; break; + case DT_PLTRELSZ: name = ".rela.plt"; size = true; break; + case DT_JMPREL: name = ".rela.plt"; size = false; break; + default: name = NULL; size = false; break; + } + + if (name != NULL) + { + asection *s; + + s = bfd_get_section_by_name (output_bfd, name); + if (s == NULL) + dyn.d_un.d_val = 0; + else + { + if (! size) + dyn.d_un.d_ptr = s->vma; + else + { + if (s->_cooked_size != 0) + dyn.d_un.d_val = s->_cooked_size; + else + dyn.d_un.d_val = s->_raw_size; + } + } + bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); + } + } + + /* Initialize the contents of the .plt section. */ + if (splt->_raw_size > 0) + { + sparc64_elf_build_plt(output_bfd, splt->contents, + splt->_raw_size / PLT_ENTRY_SIZE); + } + + elf_section_data (splt->output_section)->this_hdr.sh_entsize = + PLT_ENTRY_SIZE; + } + + /* Set the first entry in the global offset table to the address of + the dynamic section. */ + sgot = bfd_get_section_by_name (dynobj, ".got"); + BFD_ASSERT (sgot != NULL); + if (sgot->_raw_size > 0) + { + if (sdyn == NULL) + bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents); + else + bfd_put_64 (output_bfd, + sdyn->output_section->vma + sdyn->output_offset, + sgot->contents); + } + + elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 8; + + if (info->shared) + { + asection *sdynsym; + asection *s; + Elf_Internal_Sym sym; + int c; + + /* Set up the section symbols for the output sections. */ + + sdynsym = bfd_get_section_by_name (dynobj, ".dynsym"); + BFD_ASSERT (sdynsym != NULL); + + sym.st_size = 0; + sym.st_name = 0; + sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); + sym.st_other = 0; + + c = 0; + for (s = output_bfd->sections; s != NULL; s = s->next) + { + int indx; + + if (elf_section_data (s)->dynindx == 0) + continue; + + sym.st_value = s->vma; + + indx = elf_section_data (s)->this_idx; + BFD_ASSERT (indx > 0); + sym.st_shndx = indx; + + bfd_elf64_swap_symbol_out (output_bfd, &sym, + (PTR) (((Elf64_External_Sym *) + sdynsym->contents) + + elf_section_data (s)->dynindx)); + + ++c; + } + + /* Set the sh_info field of the output .dynsym section to the + index of the first global symbol. */ + elf_section_data (sdynsym->output_section)->this_hdr.sh_info = c + 1; + } + + return true; +} + +/* Functions for dealing with the e_flags field. */ + +/* Merge backend specific data from an object file to the output + object file when linking. */ + +static boolean +sparc64_elf_merge_private_bfd_data (ibfd, obfd) + bfd *ibfd; + bfd *obfd; +{ + boolean error; + flagword new_flags, old_flags; + int new_mm, old_mm; + + if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour + || bfd_get_flavour (obfd) != bfd_target_elf_flavour) + return true; + + new_flags = elf_elfheader (ibfd)->e_flags; + old_flags = elf_elfheader (obfd)->e_flags; + + if (!elf_flags_init (obfd)) /* First call, no flags set */ + { + elf_flags_init (obfd) = true; + elf_elfheader (obfd)->e_flags = new_flags; + } + + else if (new_flags == old_flags) /* Compatible flags are ok */ + ; + + else /* Incompatible flags */ + { + error = false; + + old_flags |= (new_flags & (EF_SPARC_SUN_US1|EF_SPARC_HAL_R1)); + new_flags |= (old_flags & (EF_SPARC_SUN_US1|EF_SPARC_HAL_R1)); + if ((old_flags & (EF_SPARC_SUN_US1|EF_SPARC_HAL_R1)) == + (EF_SPARC_SUN_US1|EF_SPARC_HAL_R1)) + { + error = true; + (*_bfd_error_handler) + (_("%s: linking UltraSPARC specific with HAL specific code"), + bfd_get_filename (ibfd)); + } + + /* Choose the most restrictive memory ordering */ + old_mm = (old_flags & EF_SPARCV9_MM); + new_mm = (new_flags & EF_SPARCV9_MM); + old_flags &= ~EF_SPARCV9_MM; + new_flags &= ~EF_SPARCV9_MM; + if (new_mm < old_mm) old_mm = new_mm; + old_flags |= old_mm; + new_flags |= old_mm; + + /* Warn about any other mismatches */ + if (new_flags != old_flags) + { + error = true; + (*_bfd_error_handler) + (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), + bfd_get_filename (ibfd), (long)new_flags, (long)old_flags); + } + + elf_elfheader (obfd)->e_flags = old_flags; + + if (error) + { + bfd_set_error (bfd_error_bad_value); + return false; + } + } + return true; +} + + +/* Set the right machine number for a SPARC64 ELF file. */ + +static boolean +sparc64_elf_object_p (abfd) + bfd *abfd; +{ + unsigned long mach = bfd_mach_sparc_v9; + + if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1) + mach = bfd_mach_sparc_v9a; + return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach); +} + +#define TARGET_BIG_SYM bfd_elf64_sparc_vec +#define TARGET_BIG_NAME "elf64-sparc" +#define ELF_ARCH bfd_arch_sparc +#define ELF_MAXPAGESIZE 0x100000 + +/* This is the official ABI value. */ +#define ELF_MACHINE_CODE EM_SPARCV9 + +/* This is the value that we used before the ABI was released. */ +#define ELF_MACHINE_ALT1 EM_OLD_SPARCV9 + +#define elf_info_to_howto \ + sparc64_elf_info_to_howto +#define bfd_elf64_bfd_reloc_type_lookup \ + sparc64_elf_reloc_type_lookup + +#define elf_backend_create_dynamic_sections \ + _bfd_elf_create_dynamic_sections +#define elf_backend_check_relocs \ + sparc64_elf_check_relocs +#define elf_backend_adjust_dynamic_symbol \ + sparc64_elf_adjust_dynamic_symbol +#define elf_backend_size_dynamic_sections \ + sparc64_elf_size_dynamic_sections +#define elf_backend_relocate_section \ + sparc64_elf_relocate_section +#define elf_backend_finish_dynamic_symbol \ + sparc64_elf_finish_dynamic_symbol +#define elf_backend_finish_dynamic_sections \ + sparc64_elf_finish_dynamic_sections + +#define bfd_elf64_bfd_merge_private_bfd_data \ + sparc64_elf_merge_private_bfd_data + +#define elf_backend_object_p \ + sparc64_elf_object_p + +#define elf_backend_want_got_plt 0 +#define elf_backend_plt_readonly 0 +#define elf_backend_want_plt_sym 1 + +/* Section 5.2.4 of the ABI specifies a 256-byte boundary for the table. */ +#define elf_backend_plt_alignment 8 + +#define elf_backend_got_header_size 8 +#define elf_backend_plt_header_size PLT_HEADER_SIZE + +#include "elf64-target.h" |