diff options
| author | Thiemo Seufer <ths@networkno.de> | 2002-04-04 07:01:27 +0000 |
|---|---|---|
| committer | Thiemo Seufer <ths@networkno.de> | 2002-04-04 07:01:27 +0000 |
| commit | 5ba75aa8078813f81b961032100e99ea4f99e7ec (patch) | |
| tree | 3de7bcb1fc5acaf5c91478bb2d1b8af19a09c4fb /bfd/elf64-mips.c | |
| parent | 2d349ef4574ab603eee1e970de89a3d1415c5b44 (diff) | |
| download | gdb-5ba75aa8078813f81b961032100e99ea4f99e7ec.tar.gz | |
* Makefile.am: Add elfxx-mips.c to the known backends.
(elf32-mips.lo): remove dependency to coff/external.h.
* Makefile.in: Regenerate.
* configure.in: Add elfxx-mips.lo to all vectors using elf32-mips.lo
Remove elf32-mips.lo from 64 bit vectors. Update dependencies
accordingly.
* configure: Regenerate.
* elf-bfd.h: Move all MIPS ELF specific prototypes to elfxx-mips.h.
(irix_compat_t): IRIX compatibility level, moved from elf32-mips.c.
(elf_backend_mips_irix_compat, elf_backend_mips_rtype_to_howto): New
MIPS specific backend functions.
* elf32-mips.c: Moved most code to elfxx-mips.c.
(mips_elf_hi16_reloc): Rename from _bfd_mips_elf_hi16_reloc and make
static.
(mips_elf_lo16_reloc): Likewise, was _bfd_mips_elf_lo16_reloc.
(mips_elf_got16_reloc): Likewise, was _bfd_mips_elf_got16_reloc.
(mips_elf_gprel32_reloc): Likewise, was _bfd_mips_elf_gprel32_reloc.
(mips_elf32_rtype_to_howto): Rename from mips_rtype_to_howto. Changed
interface to allow selection of the right REL or RELA howto table.
(mips_elf32_object_p): Rename from _bfd_mips_elf_object_p and made
static. Let it refuse n32 objects.
(elf32_mips_grok_prstatus): Rename from _bfd_elf32_mips_grok_prstatus.
(elf32_mips_grok_psinfo): Rename from _bfd_elf32_mips_grok_psinfo.
(elf32_mips_discard_info): Rename from _bfd_elf32_mips_discard_info.
(elf32_mips_ignore_discarded_relocs): Rename from
_bfd_elf32_mips_ignore_discarded_relocs.
(elf32_mips_write_section): Rename from _bfd_elf32_mips_write_section.
(elf32_mips_irix_compat): New function, replaces IRIX_COMPAT.
(elf_mips_howto_table_rela): Remove.
* elf64-mips.c: Moved most code to elfxx-mips.c.
(bfd_elf64_bfd_reloc_type_lookup): Make static.
(mips_elf64_rtype_to_howto): New function.
(mips_elf64_object_p): Likewise.
(elf64_mips_irix_compat): Likewise.
* elfxx-mips.c: New file containing common code merged together from
elf32-mips.c and elf64-mips.c.
* elfxx-mips.h: New file containing MIPS specific prototypes from
elf-bfd.h.
* elfxx-target.h: Add handling for elf_backend_mips_irix_compat and
elf_backend_mips_rtype_to_howto.
Diffstat (limited to 'bfd/elf64-mips.c')
| -rw-r--r-- | bfd/elf64-mips.c | 4534 |
1 files changed, 120 insertions, 4414 deletions
diff --git a/bfd/elf64-mips.c b/bfd/elf64-mips.c index c355b0d8240..508c0ee0bca 100644 --- a/bfd/elf64-mips.c +++ b/bfd/elf64-mips.c @@ -38,7 +38,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ . - Embedded PIC is only partially implemented (is it needed?). . - Combined relocs with RSS_* entries are unsupported. . - The whole GOT handling for NewABI is missing, some parts of - . the OldABI version is still lying around and shold be removed. + . the OldABI version is still lying around and should be removed. */ #include "bfd.h" @@ -48,6 +48,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "bfdlink.h" #include "genlink.h" #include "elf-bfd.h" +#include "elfxx-mips.h" #include "elf/mips.h" /* Get the ECOFF swapping routines. The 64-bit ABI is not supposed to @@ -61,8 +62,6 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #define ECOFF_SIGNED_64 #include "ecoffswap.h" -struct mips_elf64_link_hash_entry; - static void mips_elf64_swap_reloc_in PARAMS ((bfd *, const Elf64_Mips_External_Rel *, Elf64_Mips_Internal_Rel *)); @@ -83,11 +82,10 @@ static void mips_elf64_be_swap_reloca_in PARAMS ((bfd *, const bfd_byte *, Elf_Internal_Rela *)); static void mips_elf64_be_swap_reloca_out PARAMS ((bfd *, const Elf_Internal_Rela *, bfd_byte *)); -static bfd_vma mips_elf64_high PARAMS ((bfd_vma)); -static bfd_vma mips_elf64_higher PARAMS ((bfd_vma)); -static bfd_vma mips_elf64_highest PARAMS ((bfd_vma)); -static reloc_howto_type *mips_elf64_reloc_type_lookup +static reloc_howto_type *bfd_elf64_bfd_reloc_type_lookup PARAMS ((bfd *, bfd_reloc_code_real_type)); +static reloc_howto_type *mips_elf64_rtype_to_howto + PARAMS ((unsigned int, boolean)); static void mips_elf64_info_to_howto_rel PARAMS ((bfd *, arelent *, Elf64_Internal_Rel *)); static void mips_elf64_info_to_howto_rela @@ -102,8 +100,6 @@ static void mips_elf64_write_rel PARAMS((bfd *, asection *, Elf_Internal_Shdr *, int *, PTR)); static void mips_elf64_write_rela PARAMS((bfd *, asection *, Elf_Internal_Shdr *, int *, PTR)); -static struct bfd_hash_entry *mips_elf64_link_hash_newfunc - PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); static bfd_reloc_status_type mips_elf64_hi16_reloc PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); static bfd_reloc_status_type mips_elf64_higher_reloc @@ -125,101 +121,11 @@ static bfd_reloc_status_type mips_elf64_got16_reloc static boolean mips_elf64_assign_gp PARAMS ((bfd *, bfd_vma *)); static bfd_reloc_status_type mips_elf64_final_gp PARAMS ((bfd *, asymbol *, boolean, char **, bfd_vma *)); -static bfd_reloc_status_type gprel16_with_gp - PARAMS ((bfd *, asymbol *, arelent *, asection *, boolean, PTR, bfd_vma)); -static int mips_elf64_additional_program_headers PARAMS ((bfd *)); -static struct bfd_link_hash_table *mips_elf64_link_hash_table_create - PARAMS((bfd *)); -static bfd_vma mips_elf64_got_offset_from_index - PARAMS ((bfd *, bfd *, bfd_vma)); -static struct mips_elf64_got_info *_mips_elf64_got_info - PARAMS ((bfd *, asection **)); -static bfd_vma mips_elf64_sign_extend PARAMS ((bfd_vma, int)); -static boolean mips_elf64_overflow_p PARAMS ((bfd_vma, int)); -static bfd_vma mips_elf64_global_got_index - PARAMS ((bfd *, struct elf_link_hash_entry *)); -static boolean mips_elf64_sort_hash_table_f - PARAMS ((struct mips_elf64_link_hash_entry *, PTR)); -static boolean mips_elf64_sort_hash_table - PARAMS ((struct bfd_link_info *, unsigned long)); -static void mips_elf64_swap_msym_out - PARAMS ((bfd *, const Elf32_Internal_Msym *, Elf32_External_Msym *)); -static bfd_vma mips_elf64_create_local_got_entry - PARAMS ((bfd *abfd, struct mips_elf64_got_info *, asection *, - bfd_vma value)); -static bfd_vma mips_elf64_local_got_index - PARAMS ((bfd *, struct bfd_link_info *, bfd_vma)); -static bfd_vma mips_elf64_got_page - PARAMS ((bfd *, struct bfd_link_info *, bfd_vma, bfd_vma *)); -static bfd_vma mips_elf64_got16_entry - PARAMS ((bfd *, struct bfd_link_info *, bfd_vma, boolean)); -static boolean mips_elf64_local_relocation_p - PARAMS ((bfd *, const Elf_Internal_Rela *, asection **, boolean)); -static const Elf_Internal_Rela *mips_elf64_next_relocation - PARAMS ((unsigned int, const Elf_Internal_Rela *, - const Elf_Internal_Rela *)); -static boolean mips_elf64_create_dynamic_relocation - PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Rela *, - struct mips_elf64_link_hash_entry *, asection *, bfd_vma, - bfd_vma *, asection *)); -static bfd_reloc_status_type mips_elf64_calculate_relocation - PARAMS ((bfd *, bfd *, asection *, struct bfd_link_info *, - const Elf_Internal_Rela *, bfd_vma, reloc_howto_type *, - Elf_Internal_Sym *, asection **, bfd_vma *, const char **, - boolean *)); -static bfd_vma mips_elf64_obtain_contents - PARAMS ((reloc_howto_type *, const Elf_Internal_Rela *, bfd *, bfd_byte *)); -static boolean mips_elf64_perform_relocation - PARAMS ((struct bfd_link_info *, reloc_howto_type *, - const Elf_Internal_Rela *, bfd_vma, - bfd *, asection *, bfd_byte *, boolean)); -static boolean mips_elf64_relocate_section - PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, - Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); -boolean mips_elf64_create_dynamic_sections - PARAMS ((bfd *, struct bfd_link_info *)); -boolean mips_elf64_adjust_dynamic_symbol - PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *h)); -boolean mips_elf64_always_size_sections - PARAMS ((bfd *, struct bfd_link_info *)); -static boolean mips_elf64_check_mips16_stubs - PARAMS ((struct mips_elf64_link_hash_entry *, PTR)); -boolean mips_elf64_size_dynamic_sections - PARAMS ((bfd *, struct bfd_link_info *)); -boolean mips_elf64_finish_dynamic_symbol - PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, - Elf_Internal_Sym *)); -boolean mips_elf64_finish_dynamic_sections - PARAMS ((bfd *, struct bfd_link_info *info)); -asection *mips_elf64_gc_mark_hook - PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *, - struct elf_link_hash_entry *, Elf_Internal_Sym *)); -boolean mips_elf64_gc_sweep_hook - PARAMS ((bfd *, struct bfd_link_info *, asection *, - const Elf_Internal_Rela *)); -static boolean mips_elf64_create_got_section - PARAMS ((bfd *, struct bfd_link_info *)); -static boolean mips_elf64_record_global_got_symbol - PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *, - struct mips_elf64_got_info *)); -static asection *mips_elf64_create_msym_section PARAMS((bfd *)); -static void mips_elf64_allocate_dynamic_relocations - PARAMS ((bfd *, unsigned int)); -static boolean mips_elf64_stub_section_p PARAMS ((bfd *, asection *)); -boolean mips_elf64_check_relocs - PARAMS ((bfd *, struct bfd_link_info *, asection *, - const Elf_Internal_Rela *)); -static boolean mips_elf64_output_extsym - PARAMS ((struct mips_elf64_link_hash_entry *, PTR)); -static void mips_elf64_swap_gptab_in - PARAMS ((bfd *, const Elf32_External_gptab *, Elf32_gptab *)); -static void mips_elf64_swap_gptab_out - PARAMS ((bfd *, const Elf32_gptab *, Elf32_External_gptab *)); -static int gptab_compare PARAMS ((const PTR, const PTR)); -boolean mips_elf64_final_link PARAMS ((bfd *, struct bfd_link_info *)); - -extern const bfd_target bfd_elf64_bigmips_vec; -extern const bfd_target bfd_elf64_littlemips_vec; +static boolean mips_elf64_object_p PARAMS ((bfd *)); +static irix_compat_t elf64_mips_irix_compat PARAMS ((bfd *)); + +extern const bfd_target bfd_elf64_tradbigmips_vec; +extern const bfd_target bfd_elf64_tradlittlemips_vec; static bfd_vma prev_reloc_addend = 0; static bfd_size_type prev_reloc_address = 0; @@ -227,8 +133,7 @@ static bfd_size_type prev_reloc_address = 0; /* Whether we are trying to be compatible with IRIX6 (or little endianers which are otherwise IRIX-ABI compliant). */ #define SGI_COMPAT(abfd) \ - ((abfd->xvec == &bfd_elf64_bigmips_vec) \ - || (abfd->xvec == &bfd_elf64_littlemips_vec) ? true : false) + (elf64_mips_irix_compat (abfd) != ict_none) /* In case we're on a 32-bit machine, construct a 64-bit "-1" value from smaller values. Start with zero, widen, *then* decrement. */ @@ -236,15 +141,7 @@ static bfd_size_type prev_reloc_address = 0; /* The number of local .got entries we reserve. */ #define MIPS_RESERVED_GOTNO (2) - -/* Instructions which appear in a stub. */ -#define ELF_MIPS_GP_OFFSET(abfd) 0x7ff0 -#define STUB_LW 0xdf998010 /* ld t9,0x8010(gp) */ -#define STUB_MOVE 0x03e07825 /* move t7,ra */ -#define STUB_JALR 0x0320f809 /* jal t9 */ -#define STUB_LI16 0x34180000 /* ori t8,zero,0 */ -#define MIPS_FUNCTION_STUB_SIZE (16) - + /* The relocation table used for SHT_REL sections. */ #define UNUSED_RELOC(num) { num, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } @@ -1300,7 +1197,7 @@ static reloc_howto_type mips_elf64_howto_table_rela[] = 0x00000000, /* dst_mask */ false), /* pcrel_offset */ }; - + /* Swap in a MIPS 64-bit Rel reloc. */ static void @@ -1465,34 +1362,7 @@ mips_elf64_be_swap_reloca_out (abfd, src, dst) mips_elf64_swap_reloca_out (abfd, &mirela, (Elf64_Mips_External_Rela *) dst); } - -/* Calculate the %high function. */ - -static bfd_vma -mips_elf64_high (value) - bfd_vma value; -{ - return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff; -} - -/* Calculate the %higher function. */ - -static bfd_vma -mips_elf64_higher (value) - bfd_vma value; -{ - return ((value + (bfd_vma) 0x80008000) >> 32) & 0xffff; -} - -/* Calculate the %highest function. */ - -static bfd_vma -mips_elf64_highest (value) - bfd_vma value; -{ - return ((value + (bfd_vma) 0x800080008000) >> 48) & 0xffff; -} - + /* Do a R_MIPS_HI16 relocation. */ bfd_reloc_status_type @@ -1787,68 +1657,9 @@ mips_elf64_gprel16_reloc (abfd, reloc_entry, symbol, data, input_section, if (ret != bfd_reloc_ok) return ret; - return gprel16_with_gp (abfd, symbol, reloc_entry, input_section, - relocateable, data, gp); -} - -static bfd_reloc_status_type -gprel16_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data, - gp) - bfd *abfd; - asymbol *symbol; - arelent *reloc_entry; - asection *input_section; - boolean relocateable; - PTR data; - bfd_vma gp; -{ - bfd_vma relocation; - unsigned long insn; - unsigned long val; - - if (bfd_is_com_section (symbol->section)) - relocation = 0; - else - relocation = symbol->value; - - relocation += symbol->section->output_section->vma; - relocation += symbol->section->output_offset; - - if (reloc_entry->address > input_section->_cooked_size) - return bfd_reloc_outofrange; - - insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); - - /* Set val to the offset into the section or symbol. */ - if (reloc_entry->howto->src_mask == 0) - { - /* This case occurs with the 64-bit MIPS ELF ABI. */ - val = reloc_entry->addend; - } - else - { - val = ((insn & 0xffff) + reloc_entry->addend) & 0xffff; - if (val & 0x8000) - val -= 0x10000; - } - - /* Adjust val for the final section location and GP value. If we - are producing relocateable output, we don't want to do this for - an external symbol. */ - if (! relocateable - || (symbol->flags & BSF_SECTION_SYM) != 0) - val += relocation - gp; - - insn = (insn & ~0xffff) | (val & 0xffff); - bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); - - if (relocateable) - reloc_entry->address += input_section->output_offset; - - else if ((long) val >= 0x8000 || (long) val < -0x8000) - return bfd_reloc_overflow; - - return bfd_reloc_ok; + return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry, + input_section, relocateable, + data, gp); } /* Do a R_MIPS_GPREL16 RELA relocation. */ @@ -2057,23 +1868,10 @@ mips_elf64_shift6_reloc (abfd, reloc_entry, symbol, data, input_section, return bfd_reloc_continue; } -static int -mips_elf64_additional_program_headers (abfd) - bfd *abfd; -{ - int ret = 0; - - /* See if we need a PT_MIPS_OPTIONS segment. */ - if (bfd_get_section_by_name (abfd, ".MIPS.options")) - ++ret; - - return ret; -} - /* Given a BFD reloc type, return a howto structure. */ static reloc_howto_type * -mips_elf64_reloc_type_lookup (abfd, code) +bfd_elf64_bfd_reloc_type_lookup (abfd, code) bfd *abfd ATTRIBUTE_UNUSED; bfd_reloc_code_real_type code; { @@ -2091,14 +1889,7 @@ mips_elf64_reloc_type_lookup (abfd, code) return &howto_table[R_MIPS_32]; case BFD_RELOC_64: case BFD_RELOC_CTOR: - /* We need to handle these specially. Select the right - relocation (R_MIPS_32 or R_MIPS_64) based on the - size of addresses on this architecture. */ - if (bfd_arch_bits_per_address (abfd) == 32) - return &howto_table[R_MIPS_32]; - else - return &howto_table[R_MIPS_64]; - + return &howto_table[R_MIPS_64]; case BFD_RELOC_16_PCREL: return &howto_table[R_MIPS_PC16]; case BFD_RELOC_HI16_S: @@ -2182,6 +1973,55 @@ mips_elf64_reloc_type_lookup (abfd, code) } } +/* Given a MIPS Elf64_Internal_Rel, fill in an arelent structure. */ + +static reloc_howto_type * +mips_elf64_rtype_to_howto (r_type, rela_p) + unsigned int r_type; + boolean rela_p; +{ + switch (r_type) + { +/* + case R_MIPS16_26: + return &elf_mips16_jump_howto; + break; + case R_MIPS16_GPREL: + return &elf_mips16_gprel_howto; + break; + case R_MIPS_GNU_VTINHERIT: + return &elf_mips_gnu_vtinherit_howto; + break; + case R_MIPS_GNU_VTENTRY: + return &elf_mips_gnu_vtentry_howto; + break; + case R_MIPS_GNU_REL_HI16: + return &elf_mips_gnu_rel_hi16; + break; + case R_MIPS_GNU_REL_LO16: + return &elf_mips_gnu_rel_lo16; + break; + case R_MIPS_GNU_REL16_S2: + return &elf_mips_gnu_rel16_s2; + break; + case R_MIPS_PC64: + return &elf_mips_gnu_pcrel64; + break; + case R_MIPS_PC32: + return &elf_mips_gnu_pcrel32; + break; +*/ + + default: + BFD_ASSERT (r_type < (unsigned int) R_MIPS_max); + if (rela_p) + return &mips_elf64_howto_table_rela[r_type]; + else + return &mips_elf64_howto_table_rel[r_type]; + break; + } +} + /* Prevent relocation handling by bfd for MIPS ELF64. */ static void @@ -2728,4176 +2568,36 @@ mips_elf64_write_rela (abfd, sec, rela_hdr, count, data) == *count); } -/* This structure is used to hold .got information when linking. It - is stored in the tdata field of the bfd_elf_section_data structure. */ - -struct mips_elf64_got_info -{ - /* The global symbol in the GOT with the lowest index in the dynamic - symbol table. */ - struct elf_link_hash_entry *global_gotsym; - /* The number of global .got entries. */ - unsigned int global_gotno; - /* The number of local .got entries. */ - unsigned int local_gotno; - /* The number of local .got entries we have used. */ - unsigned int assigned_gotno; -}; - -/* The MIPS ELF64 linker needs additional information for each symbol in - the global hash table. */ - -struct mips_elf64_link_hash_entry -{ - struct elf_link_hash_entry root; - - /* External symbol information. */ - EXTR esym; - - /* Number of R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 relocs against - this symbol. */ - unsigned int possibly_dynamic_relocs; - - /* If the R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 reloc is against - a readonly section. */ - boolean readonly_reloc; - - /* The index of the first dynamic relocation (in the .rel.dyn - section) against this symbol. */ - unsigned int min_dyn_reloc_index; - - /* We must not create a stub for a symbol that has relocations - related to taking the function's address, i.e. any but - R_MIPS_CALL*16 ones -- see "MIPS ABI Supplement, 3rd Edition", - p. 4-20. */ - boolean no_fn_stub; - - /* If there is a stub that 32 bit functions should use to call this - 16 bit function, this points to the section containing the stub. */ - asection *fn_stub; - - /* Whether we need the fn_stub; this is set if this symbol appears - in any relocs other than a 16 bit call. */ - boolean need_fn_stub; - - /* If there is a stub that 16 bit functions should use to call this - 32 bit function, this points to the section containing the stub. */ - asection *call_stub; - - /* This is like the call_stub field, but it is used if the function - being called returns a floating point value. */ - asection *call_fp_stub; -}; - - /* The mips16 compiler uses a couple of special sections to handle - floating point arguments. - - Section names that look like .mips16.fn.FNNAME contain stubs that - copy floating point arguments from the fp regs to the gp regs and - then jump to FNNAME. If any 32 bit function calls FNNAME, the - call should be redirected to the stub instead. If no 32 bit - function calls FNNAME, the stub should be discarded. We need to - consider any reference to the function, not just a call, because - if the address of the function is taken we will need the stub, - since the address might be passed to a 32 bit function. - - Section names that look like .mips16.call.FNNAME contain stubs - that copy floating point arguments from the gp regs to the fp - regs and then jump to FNNAME. If FNNAME is a 32 bit function, - then any 16 bit function that calls FNNAME should be redirected - to the stub instead. If FNNAME is not a 32 bit function, the - stub should be discarded. - - .mips16.call.fp.FNNAME sections are similar, but contain stubs - which call FNNAME and then copy the return value from the fp regs - to the gp regs. These stubs store the return value in $18 while - calling FNNAME; any function which might call one of these stubs - must arrange to save $18 around the call. (This case is not - needed for 32 bit functions that call 16 bit functions, because - 16 bit functions always return floating point values in both - $f0/$f1 and $2/$3.) - - Note that in all cases FNNAME might be defined statically. - Therefore, FNNAME is not used literally. Instead, the relocation - information will indicate which symbol the section is for. - - We record any stubs that we find in the symbol table. */ - -#define FN_STUB ".mips16.fn." -#define CALL_STUB ".mips16.call." -#define CALL_FP_STUB ".mips16.call.fp." - -/* MIPS ELF64 linker hash table. */ - -struct mips_elf64_link_hash_table -{ - struct elf_link_hash_table root; - /* This is set if we see any mips16 stub sections. */ - boolean mips16_stubs_seen; -}; - -/* Look up an entry in a MIPS ELF64 linker hash table. */ - -#define mips_elf64_link_hash_lookup(table, string, create, copy, follow) \ - ((struct mips_elf64_link_hash_entry *) \ - elf_link_hash_lookup (&(table)->root, (string), (create), \ - (copy), (follow))) - -/* Traverse a MIPS ELF linker hash table. */ - -#define mips_elf64_link_hash_traverse(table, func, info) \ - (elf_link_hash_traverse \ - (&(table)->root, \ - (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ - (info))) - -/* Get the MIPS ELF64 linker hash table from a link_info structure. */ - -#define mips_elf64_hash_table(p) \ - ((struct mips_elf64_link_hash_table *) ((p)->hash)) - -/* Create an entry in a MIPS ELF64 linker hash table. */ - -static struct bfd_hash_entry * -mips_elf64_link_hash_newfunc (entry, table, string) - struct bfd_hash_entry *entry; - struct bfd_hash_table *table; - const char *string; -{ - struct mips_elf64_link_hash_entry *ret = - (struct mips_elf64_link_hash_entry *) entry; - - /* Allocate the structure if it has not already been allocated by a - subclass. */ - if (ret == (struct mips_elf64_link_hash_entry *) NULL) - ret = ((struct mips_elf64_link_hash_entry *) - bfd_hash_allocate (table, - sizeof (struct mips_elf64_link_hash_entry))); - if (ret == (struct mips_elf64_link_hash_entry *) NULL) - return (struct bfd_hash_entry *) ret; - - /* Call the allocation method of the superclass. */ - ret = ((struct mips_elf64_link_hash_entry *) - _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, - table, string)); - if (ret != (struct mips_elf64_link_hash_entry *) NULL) - { - /* Set local fields. */ - memset (&ret->esym, 0, sizeof (EXTR)); - /* We use -2 as a marker to indicate that the information has - not been set. -1 means there is no associated ifd. */ - ret->esym.ifd = -2; - ret->possibly_dynamic_relocs = 0; - ret->readonly_reloc = false; - ret->min_dyn_reloc_index = 0; - ret->no_fn_stub = false; - ret->fn_stub = NULL; - ret->need_fn_stub = false; - ret->call_stub = NULL; - ret->call_fp_stub = NULL; - } - - return (struct bfd_hash_entry *) ret; -} - -/* Create a MIPS ELF64 linker hash table. */ - -struct bfd_link_hash_table * -mips_elf64_link_hash_table_create (abfd) - bfd *abfd; -{ - struct mips_elf64_link_hash_table *ret; - - ret = ((struct mips_elf64_link_hash_table *) - bfd_alloc (abfd, sizeof (struct mips_elf64_link_hash_table))); - if (ret == (struct mips_elf64_link_hash_table *) NULL) - return NULL; - - if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, - mips_elf64_link_hash_newfunc)) - { - bfd_release (abfd, ret); - return NULL; - } - - ret->mips16_stubs_seen = false; - - return &ret->root.root; -} - -/* Returns the offset for the entry at the INDEXth position - in the GOT. */ - -static bfd_vma -mips_elf64_got_offset_from_index (dynobj, output_bfd, index) - bfd *dynobj; - bfd *output_bfd; - bfd_vma index; -{ - asection *sgot; - bfd_vma gp; - - sgot = bfd_get_section_by_name (dynobj, ".got"); - gp = _bfd_get_gp_value (output_bfd); - return (sgot->output_section->vma + sgot->output_offset + index - - gp); -} - -/* Returns the GOT information associated with the link indicated by - INFO. If SGOTP is non-NULL, it is filled in with the GOT - section. */ - -static struct mips_elf64_got_info * -_mips_elf64_got_info (abfd, sgotp) - bfd *abfd; - asection **sgotp; -{ - asection *sgot; - struct mips_elf64_got_info *g; - - sgot = bfd_get_section_by_name (abfd, ".got"); - BFD_ASSERT (sgot != NULL); - BFD_ASSERT (elf_section_data (sgot) != NULL); - g = (struct mips_elf64_got_info *) elf_section_data (sgot)->tdata; - BFD_ASSERT (g != NULL); - - if (sgotp) - *sgotp = sgot; - return g; -} - -/* Sign-extend VALUE, which has the indicated number of BITS. */ - -static bfd_vma -mips_elf64_sign_extend (value, bits) - bfd_vma value; - int bits; -{ - if (value & ((bfd_vma)1 << (bits - 1))) - /* VALUE is negative. */ - value |= ((bfd_vma) - 1) << bits; - - return value; -} - -/* Return non-zero if the indicated VALUE has overflowed the maximum - range expressable by a signed number with the indicated number of - BITS. */ +/* Set the right machine number for a MIPS ELF file. */ static boolean -mips_elf64_overflow_p (value, bits) - bfd_vma value; - int bits; -{ - bfd_signed_vma svalue = (bfd_signed_vma) value; - - if (svalue > (1 << (bits - 1)) - 1) - /* The value is too big. */ - return true; - else if (svalue < -(1 << (bits - 1))) - /* The value is too small. */ - return true; - - /* All is well. */ - return false; -} - -/* Returns the GOT index for the global symbol indicated by H. */ - -static bfd_vma -mips_elf64_global_got_index (abfd, h) +mips_elf64_object_p (abfd) bfd *abfd; - struct elf_link_hash_entry *h; -{ - bfd_vma index; - asection *sgot; - struct mips_elf64_got_info *g; - - g = _mips_elf64_got_info (abfd, &sgot); - - /* Once we determine the global GOT entry with the lowest dynamic - symbol table index, we must put all dynamic symbols with greater - indices into the GOT. That makes it easy to calculate the GOT - offset. */ - BFD_ASSERT (h->dynindx >= g->global_gotsym->dynindx); - index = ((h->dynindx - g->global_gotsym->dynindx + g->local_gotno) - * (get_elf_backend_data (abfd)->s->arch_size / 8)); - BFD_ASSERT (index < sgot->_raw_size); - - return index; -} - -struct mips_elf64_hash_sort_data -{ - /* The symbol in the global GOT with the lowest dynamic symbol table - index. */ - struct elf_link_hash_entry *low; - /* The least dynamic symbol table index corresponding to a symbol - with a GOT entry. */ - long min_got_dynindx; - /* The greatest dynamic symbol table index not corresponding to a - symbol without a GOT entry. */ - long max_non_got_dynindx; -}; - -/* If H needs a GOT entry, assign it the highest available dynamic - index. Otherwise, assign it the lowest available dynamic - index. */ - -static boolean -mips_elf64_sort_hash_table_f (h, data) - struct mips_elf64_link_hash_entry *h; - PTR data; -{ - struct mips_elf64_hash_sort_data *hsd - = (struct mips_elf64_hash_sort_data *) data; - - if (h->root.root.type == bfd_link_hash_warning) - h = (struct mips_elf64_link_hash_entry *) h->root.root.u.i.link; - - /* Symbols without dynamic symbol table entries aren't interesting - at all. */ - if (h->root.dynindx == -1) - return true; - - if (h->root.got.offset != 1) - h->root.dynindx = hsd->max_non_got_dynindx++; - else - { - h->root.dynindx = --hsd->min_got_dynindx; - hsd->low = (struct elf_link_hash_entry *) h; - } - - return true; -} - -/* Sort the dynamic symbol table so that symbols that need GOT entries - appear towards the end. This reduces the amount of GOT space - required. MAX_LOCAL is used to set the number of local symbols - known to be in the dynamic symbol table. During - mips_elf64_size_dynamic_sections, this value is 1. Afterward, the - section symbols are added and the count is higher. */ - -static boolean -mips_elf64_sort_hash_table (info, max_local) - struct bfd_link_info *info; - unsigned long max_local; { - struct mips_elf64_hash_sort_data hsd; - struct mips_elf64_got_info *g; - bfd *dynobj; + unsigned long mach; - dynobj = elf_hash_table (info)->dynobj; - - hsd.low = NULL; - hsd.min_got_dynindx = elf_hash_table (info)->dynsymcount; - hsd.max_non_got_dynindx = max_local; - mips_elf64_link_hash_traverse (((struct mips_elf64_link_hash_table *) - elf_hash_table (info)), - mips_elf64_sort_hash_table_f, - &hsd); - - /* There shoud have been enough room in the symbol table to - accomodate both the GOT and non-GOT symbols. */ - BFD_ASSERT (hsd.max_non_got_dynindx <= hsd.min_got_dynindx); - - /* Now we know which dynamic symbol has the lowest dynamic symbol - table index in the GOT. */ - g = _mips_elf64_got_info (dynobj, NULL); - g->global_gotsym = hsd.low; + /* Irix 6 is broken. Object file symbol tables are not always + sorted correctly such that local symbols precede global symbols, + and the sh_info field in the symbol table is not always right. */ + if (SGI_COMPAT(abfd)) + elf_bad_symtab (abfd) = true; + mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags); + bfd_default_set_arch_mach (abfd, bfd_arch_mips, mach); return true; } - -#if 0 -/* Swap in an MSYM entry. */ - -static void -mips_elf64_swap_msym_in (abfd, ex, in) - bfd *abfd; - const Elf32_External_Msym *ex; - Elf32_Internal_Msym *in; -{ - in->ms_hash_value = H_GET_32 (abfd, ex->ms_hash_value); - in->ms_info = H_GET_32 (abfd, ex->ms_info); -} -#endif -/* Swap out an MSYM entry. */ - -static void -mips_elf64_swap_msym_out (abfd, in, ex) - bfd *abfd; - const Elf32_Internal_Msym *in; - Elf32_External_Msym *ex; -{ - H_PUT_32 (abfd, in->ms_hash_value, ex->ms_hash_value); - H_PUT_32 (abfd, in->ms_info, ex->ms_info); -} - -/* Create a local GOT entry for VALUE. Return the index of the entry, - or -1 if it could not be created. */ - -static bfd_vma -mips_elf64_create_local_got_entry (abfd, g, sgot, value) - bfd *abfd; - struct mips_elf64_got_info *g; - asection *sgot; - bfd_vma value; -{ - CONST bfd_vma got_size = get_elf_backend_data (abfd)->s->arch_size / 8; - - if (g->assigned_gotno >= g->local_gotno) - { - /* We didn't allocate enough space in the GOT. */ - (*_bfd_error_handler) - (_("not enough GOT space for local GOT entries")); - bfd_set_error (bfd_error_bad_value); - return (bfd_vma) -1; - } - - bfd_put_64 (abfd, value, (sgot->contents + got_size * g->assigned_gotno)); - return got_size * g->assigned_gotno++; -} - -/* Returns the GOT offset at which the indicated address can be found. - If there is not yet a GOT entry for this value, create one. Returns - -1 if no satisfactory GOT offset can be found. */ - -static bfd_vma -mips_elf64_local_got_index (abfd, info, value) - bfd *abfd; - struct bfd_link_info *info; - bfd_vma value; -{ - CONST bfd_vma got_size = get_elf_backend_data (abfd)->s->arch_size / 8; - asection *sgot; - struct mips_elf64_got_info *g; - bfd_byte *entry; - - g = _mips_elf64_got_info (elf_hash_table (info)->dynobj, &sgot); - - /* Look to see if we already have an appropriate entry. */ - for (entry = (sgot->contents + got_size * MIPS_RESERVED_GOTNO); - entry != sgot->contents + got_size * g->assigned_gotno; - entry += got_size) - { - bfd_vma address = bfd_get_64 (abfd, entry); - if (address == value) - return entry - sgot->contents; - } - - return mips_elf64_create_local_got_entry (abfd, g, sgot, value); -} - -/* Find a GOT entry that is within 32KB of the VALUE. These entries - are supposed to be placed at small offsets in the GOT, i.e., - within 32KB of GP. Return the index into the GOT for this page, - and store the offset from this entry to the desired address in - OFFSETP, if it is non-NULL. */ - -static bfd_vma -mips_elf64_got_page (abfd, info, value, offsetp) - bfd *abfd; - struct bfd_link_info *info; - bfd_vma value; - bfd_vma *offsetp; -{ - CONST bfd_vma got_size = get_elf_backend_data (abfd)->s->arch_size / 8; - asection *sgot; - struct mips_elf64_got_info *g; - bfd_byte *entry; - bfd_byte *last_entry; - bfd_vma index = 0; - bfd_vma address; - - g = _mips_elf64_got_info (elf_hash_table (info)->dynobj, &sgot); - - /* Look to see if we aleady have an appropriate entry. */ - last_entry = sgot->contents + got_size * g->assigned_gotno; - for (entry = (sgot->contents + got_size * MIPS_RESERVED_GOTNO); - entry != last_entry; - entry += got_size) - { - address = bfd_get_64 (abfd, entry); - - if (!mips_elf64_overflow_p (value - address, 16)) - { - /* This entry will serve as the page pointer. We can add a - 16-bit number to it to get the actual address. */ - index = entry - sgot->contents; - break; - } - } - - /* If we didn't have an appropriate entry, we create one now. */ - if (entry == last_entry) - index = mips_elf64_create_local_got_entry (abfd, g, sgot, value); - - if (offsetp) - { - address = bfd_get_64 (abfd, entry); - *offsetp = value - address; - } - - return index; -} -/* Find a GOT entry whose higher-order 16 bits are the same as those - for value. Return the index into the GOT for this entry. */ - -static bfd_vma -mips_elf64_got16_entry (abfd, info, value, external) +/* Depending on the target vector we generate some version of Irix + executables or "normal" MIPS ELF ABI executables. */ +static irix_compat_t +elf64_mips_irix_compat (abfd) bfd *abfd; - struct bfd_link_info *info; - bfd_vma value; - boolean external; -{ - CONST bfd_vma got_size = get_elf_backend_data (abfd)->s->arch_size / 8; - asection *sgot; - struct mips_elf64_got_info *g; - bfd_byte *entry; - bfd_byte *last_entry; - bfd_vma index = 0; - bfd_vma address; - - if (! external) - { - /* Although the ABI says that it is "the high-order 16 bits" that we - want, it is really the %high value. The complete value is - calculated with a `addiu' of a LO16 relocation, just as with a - HI16/LO16 pair. */ - value = mips_elf64_high (value) << 16; - } - - g = _mips_elf64_got_info (elf_hash_table (info)->dynobj, &sgot); - - /* Look to see if we already have an appropriate entry. */ - last_entry = sgot->contents + got_size * g->assigned_gotno; - for (entry = (sgot->contents + got_size * MIPS_RESERVED_GOTNO); - entry != last_entry; - entry += got_size) - { - address = bfd_get_64 (abfd, entry); - if (address == value) - { - /* This entry has the right high-order 16 bits, and the low-order - 16 bits are set to zero. */ - index = entry - sgot->contents; - break; - } - } - - /* If we didn't have an appropriate entry, we create one now. */ - if (entry == last_entry) - index = mips_elf64_create_local_got_entry (abfd, g, sgot, value); - - return index; -} - -/* Return whether a relocation is against a local symbol. */ - -static boolean -mips_elf64_local_relocation_p (input_bfd, relocation, local_sections, - check_forced) - bfd *input_bfd; - const Elf_Internal_Rela *relocation; - asection **local_sections; - boolean check_forced; -{ - unsigned long r_symndx; - Elf_Internal_Shdr *symtab_hdr; - struct mips_elf64_link_hash_entry* h; - size_t extsymoff; - - r_symndx = ELF64_R_SYM (relocation->r_info); - symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; - extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info; - - if (r_symndx < extsymoff) - return true; - if (elf_bad_symtab (input_bfd) && local_sections[r_symndx] != NULL) - return true; - - if (check_forced) - { - /* Look up the hash table to check whether the symbol - was forced local. */ - h = (struct mips_elf64_link_hash_entry *) - elf_sym_hashes (input_bfd) [r_symndx - extsymoff]; - /* Find the real hash-table entry for this symbol. */ - while (h->root.root.type == bfd_link_hash_indirect - || h->root.root.type == bfd_link_hash_warning) - h = (struct mips_elf64_link_hash_entry *) h->root.root.u.i.link; - if ((h->root.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0) - return true; - } - - return false; -} - -/* Returns the first relocation of type r_type found, beginning with - RELOCATION. RELEND is one-past-the-end of the relocation table. */ - -static const Elf_Internal_Rela * -mips_elf64_next_relocation (r_type, relocation, relend) - unsigned int r_type; - const Elf_Internal_Rela *relocation; - const Elf_Internal_Rela *relend; { - /* According to the MIPS ELF ABI, the R_MIPS_LO16 relocation must be - immediately following. However, for the IRIX6 ABI, the next - relocation may be a composed relocation consisting of several - relocations for the same address. In that case, the R_MIPS_LO16 - relocation may occur as one of these. We permit a similar - extension in general, as that is useful for GCC. */ - while (relocation < relend) - { - if (ELF64_MIPS_R_TYPE (relocation->r_info) == r_type) - return relocation; - - ++relocation; - } - - /* We didn't find it. */ - bfd_set_error (bfd_error_bad_value); - return NULL; -} - -/* Create a rel.dyn relocation for the dynamic linker to resolve. REL - is the original relocation, which is now being transformed into a - dynamic relocation. The ADDENDP is adjusted if necessary; the - caller should store the result in place of the original addend. */ - -static boolean -mips_elf64_create_dynamic_relocation (output_bfd, info, rel, h, sec, - symbol, addendp, input_section) - bfd *output_bfd; - struct bfd_link_info *info; - const Elf_Internal_Rela *rel; - struct mips_elf64_link_hash_entry *h; - asection *sec; - bfd_vma symbol; - bfd_vma *addendp; - asection *input_section; -{ - Elf_Internal_Rel outrel[3]; - boolean skip; - asection *sreloc; - bfd *dynobj; - int r_type; - - r_type = ELF64_MIPS_R_TYPE (rel->r_info); - dynobj = elf_hash_table (info)->dynobj; - sreloc = bfd_get_section_by_name (dynobj, ".rel.dyn"); - BFD_ASSERT (sreloc != NULL); - BFD_ASSERT (sreloc->contents != NULL); - BFD_ASSERT ((sreloc->reloc_count - * get_elf_backend_data (output_bfd)->s->sizeof_rel) - < sreloc->_raw_size); - - skip = false; - outrel[0].r_offset = _bfd_elf_section_offset (output_bfd, info, - input_section, - rel[0].r_offset); - /* FIXME: For -2 runtime relocation needs to be skipped, but - properly resolved statically and installed. */ - BFD_ASSERT (outrel[0].r_offset != (bfd_vma) -2); - - /* We begin by assuming that the offset for the dynamic relocation - is the same as for the original relocation. We'll adjust this - later to reflect the correct output offsets. */ - if (elf_section_data (input_section)->sec_info_type != ELF_INFO_TYPE_STABS) - { - outrel[1].r_offset = rel[1].r_offset; - outrel[2].r_offset = rel[2].r_offset; - } + if ((abfd->xvec == &bfd_elf64_tradbigmips_vec) + || (abfd->xvec == &bfd_elf64_tradlittlemips_vec)) + return ict_none; else - { - /* Except that in a stab section things are more complex. - Because we compress stab information, the offset given in the - relocation may not be the one we want; we must let the stabs - machinery tell us the offset. */ - outrel[1].r_offset = outrel[0].r_offset; - outrel[2].r_offset = outrel[0].r_offset; - /* If we didn't need the relocation at all, this value will be - -1. */ - if (outrel[0].r_offset == (bfd_vma) -1) - skip = true; - } - - /* If we've decided to skip this relocation, just output an empty - record. Note that R_MIPS_NONE == 0, so that this call to memset - is a way of setting R_TYPE to R_MIPS_NONE. */ - if (skip) - memset (outrel, 0, sizeof (Elf_Internal_Rel) * 3); - else - { - long indx; - bfd_vma section_offset; - - /* We must now calculate the dynamic symbol table index to use - in the relocation. */ - if (h != NULL - && (! info->symbolic || (h->root.elf_link_hash_flags - & ELF_LINK_HASH_DEF_REGULAR) == 0)) - { - indx = h->root.dynindx; - /* h->root.dynindx may be -1 if this symbol was marked to - become local. */ - if (indx == -1) - indx = 0; - } - else - { - 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 - { - indx = elf_section_data (sec->output_section)->dynindx; - if (indx == 0) - abort (); - } - - /* Figure out how far the target of the relocation is from - the beginning of its section. */ - section_offset = symbol - sec->output_section->vma; - /* The relocation we're building is section-relative. - Therefore, the original addend must be adjusted by the - section offset. */ - *addendp += section_offset; - /* Now, the relocation is just against the section. */ - symbol = sec->output_section->vma; - } - - /* If the relocation was previously an absolute relocation and - this symbol will not be referred to by the relocation, we must - adjust it by the value we give it in the dynamic symbol table. - Otherwise leave the job up to the dynamic linker. */ - if (!indx && r_type != R_MIPS_REL32) - *addendp += symbol; - - /* The relocation is always an REL32 relocation because we don't - know where the shared library will wind up at load-time. */ - outrel[0].r_info = ELF64_R_INFO (indx, R_MIPS_REL32); - - /* Adjust the output offset of the relocation to reference the - correct location in the output file. */ - outrel[0].r_offset += (input_section->output_section->vma - + input_section->output_offset); - outrel[1].r_offset += (input_section->output_section->vma - + input_section->output_offset); - outrel[2].r_offset += (input_section->output_section->vma - + input_section->output_offset); - } - - /* Put the relocation back out. */ - mips_elf64_be_swap_reloc_out (output_bfd, outrel, - (sreloc->contents - + sreloc->reloc_count - * sizeof (Elf64_Mips_External_Rel))); - - /* Record the index of the first relocation referencing H. This - information is later emitted in the .msym section. */ - if (h != NULL - && (h->min_dyn_reloc_index == 0 - || sreloc->reloc_count < h->min_dyn_reloc_index)) - h->min_dyn_reloc_index = sreloc->reloc_count; - - /* We've now added another relocation. */ - ++sreloc->reloc_count; - - /* Make sure the output section is writable. The dynamic linker - will be writing to it. */ - elf_section_data (input_section->output_section)->this_hdr.sh_flags - |= SHF_WRITE; - - return true; -} - -/* Calculate the value produced by the RELOCATION (which comes from - the INPUT_BFD). The ADDEND is the addend to use for this - RELOCATION; RELOCATION->R_ADDEND is ignored. - - The result of the relocation calculation is stored in VALUEP. - REQUIRE_JALXP indicates whether or not the opcode used with this - relocation must be JALX. - - This function returns bfd_reloc_continue if the caller need take no - further action regarding this relocation, bfd_reloc_notsupported if - something goes dramatically wrong, bfd_reloc_overflow if an - overflow occurs, and bfd_reloc_ok to indicate success. */ - -static bfd_reloc_status_type -mips_elf64_calculate_relocation (abfd, input_bfd, input_section, info, - relocation, addend, howto, local_syms, - local_sections, valuep, namep, require_jalxp) - bfd *abfd; - bfd *input_bfd; - asection *input_section; - struct bfd_link_info *info; - const Elf_Internal_Rela *relocation; - bfd_vma addend; - reloc_howto_type *howto; - Elf_Internal_Sym *local_syms; - asection **local_sections; - bfd_vma *valuep; - const char **namep; - boolean *require_jalxp; -{ - /* The eventual value we will return. */ - bfd_vma value; - /* The address of the symbol against which the relocation is - occurring. */ - bfd_vma symbol = 0; - /* The final GP value to be used for the relocatable, executable, or - shared object file being produced. */ - bfd_vma gp = (bfd_vma) - 1; - /* The place (section offset or address) of the storage unit being - relocated. */ - bfd_vma p; - /* The value of GP used to create the relocatable object. */ - bfd_vma gp0 = (bfd_vma) - 1; - /* The offset into the global offset table at which the address of - the relocation entry symbol, adjusted by the addend, resides - during execution. */ - bfd_vma g = (bfd_vma) - 1; - /* The section in which the symbol referenced by the relocation is - located. */ - asection *sec = NULL; - struct mips_elf64_link_hash_entry* h = NULL; - /* True if the symbol referred to by this relocation is a local - symbol. */ - boolean local_p; - Elf_Internal_Shdr *symtab_hdr; - size_t extsymoff; - unsigned long r_symndx; - int r_type; - /* True if overflow occurred during the calculation of the - relocation value. */ - boolean overflowed_p; - /* True if this relocation refers to a MIPS16 function. */ - boolean target_is_16_bit_code_p = false; - - /* Parse the relocation. */ - r_symndx = ELF64_R_SYM (relocation->r_info); - r_type = ELF64_MIPS_R_TYPE (relocation->r_info); - p = (input_section->output_section->vma - + input_section->output_offset - + relocation->r_offset); - - /* Assume that there will be no overflow. */ - overflowed_p = false; - - /* Figure out whether or not the symbol is local, and get the offset - used in the array of hash table entries. */ - symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; - local_p = mips_elf64_local_relocation_p (input_bfd, relocation, - local_sections, false); - if (! elf_bad_symtab (input_bfd)) - extsymoff = symtab_hdr->sh_info; - else - { - /* The symbol table does not follow the rule that local symbols - must come before globals. */ - extsymoff = 0; - } - - /* Figure out the value of the symbol. */ - if (local_p) - { - Elf_Internal_Sym *sym; - - sym = local_syms + r_symndx; - sec = local_sections[r_symndx]; - - symbol = sec->output_section->vma + sec->output_offset; - if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) - symbol += sym->st_value; - - /* MIPS16 text labels should be treated as odd. */ - if (sym->st_other == STO_MIPS16) - ++symbol; - - /* Record the name of this symbol, for our caller. */ - *namep = bfd_elf_string_from_elf_section (input_bfd, - symtab_hdr->sh_link, - sym->st_name); - if (*namep == '\0') - *namep = bfd_section_name (input_bfd, sec); - - target_is_16_bit_code_p = (sym->st_other == STO_MIPS16); - } - else - { - /* For global symbols we look up the symbol in the hash-table. */ - h = ((struct mips_elf64_link_hash_entry *) - elf_sym_hashes (input_bfd) [r_symndx - extsymoff]); - /* Find the real hash-table entry for this symbol. */ - while (h->root.root.type == bfd_link_hash_indirect - || h->root.root.type == bfd_link_hash_warning) - h = (struct mips_elf64_link_hash_entry *) h->root.root.u.i.link; - - /* Record the name of this symbol, for our caller. */ - *namep = h->root.root.root.string; - - /* If this symbol is defined, calculate its address. */ - if ((h->root.root.type == bfd_link_hash_defined - || h->root.root.type == bfd_link_hash_defweak) - && h->root.root.u.def.section) - { - sec = h->root.root.u.def.section; - if (sec->output_section) - symbol = (h->root.root.u.def.value - + sec->output_section->vma - + sec->output_offset); - else - symbol = h->root.root.u.def.value; - } - else if (h->root.root.type == bfd_link_hash_undefweak) - /* We allow relocations against undefined weak symbols, giving - it the value zero, so that you can undefined weak functions - and check to see if they exist by looking at their - addresses. */ - symbol = 0; - else if (info->shared - && (!info->symbolic || info->allow_shlib_undefined) - && !info->no_undefined - && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT) - symbol = 0; - else if (strcmp (h->root.root.root.string, "_DYNAMIC_LINK") == 0 || - strcmp (h->root.root.root.string, "_DYNAMIC_LINKING") == 0) - { - /* If this is a dynamic link, we should have created a - _DYNAMIC_LINK symbol or _DYNAMIC_LINKING(for normal mips) symbol - in in mips_elf64_create_dynamic_sections. - Otherwise, we should define the symbol with a value of 0. - FIXME: It should probably get into the symbol table - somehow as well. */ - BFD_ASSERT (! info->shared); - BFD_ASSERT (bfd_get_section_by_name (abfd, ".dynamic") == NULL); - symbol = 0; - } - else - { - if (! ((*info->callbacks->undefined_symbol) - (info, h->root.root.root.string, input_bfd, - input_section, relocation->r_offset, - (!info->shared || info->no_undefined - || ELF_ST_VISIBILITY (h->root.other))))) - return bfd_reloc_undefined; - symbol = 0; - } - - target_is_16_bit_code_p = (h->root.other == STO_MIPS16); - } - - /* If this is a 64-bit call to a 16-bit function with a stub, we - need to redirect the call to the stub, unless we're already *in* - a stub. */ - if (r_type != R_MIPS16_26 && !info->relocateable - && ((h != NULL && h->fn_stub != NULL) - || (local_p && elf_tdata (input_bfd)->local_stubs != NULL - && elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL)) - && !mips_elf64_stub_section_p (input_bfd, input_section)) - { - /* This is a 64-bit call to a 16-bit function. We should - have already noticed that we were going to need the - stub. */ - if (local_p) - sec = elf_tdata (input_bfd)->local_stubs[r_symndx]; - else - { - BFD_ASSERT (h->need_fn_stub); - sec = h->fn_stub; - } - - symbol = sec->output_section->vma + sec->output_offset; - } - /* If this is a 16-bit call to a 64-bit function with a stub, we - need to redirect the call to the stub. */ - else if (r_type == R_MIPS16_26 && !info->relocateable - && h != NULL - && (h->call_stub != NULL || h->call_fp_stub != NULL) - && !target_is_16_bit_code_p) - { - /* If both call_stub and call_fp_stub are defined, we can figure - out which one to use by seeing which one appears in the input - file. */ - if (h->call_stub != NULL && h->call_fp_stub != NULL) - { - asection *o; - - sec = NULL; - for (o = input_bfd->sections; o != NULL; o = o->next) - { - if (strncmp (bfd_get_section_name (input_bfd, o), - CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0) - { - sec = h->call_fp_stub; - break; - } - } - if (sec == NULL) - sec = h->call_stub; - } - else if (h->call_stub != NULL) - sec = h->call_stub; - else - sec = h->call_fp_stub; - - BFD_ASSERT (sec->_raw_size > 0); - symbol = sec->output_section->vma + sec->output_offset; - } - - /* Calls from 16-bit code to 32-bit code and vice versa require the - special jalx instruction. */ - *require_jalxp = (!info->relocateable - && ((r_type == R_MIPS16_26) != target_is_16_bit_code_p)); - - local_p = mips_elf64_local_relocation_p (input_bfd, relocation, - local_sections, true); - - /* If we haven't already determined the GOT offset, or the GP value, - and we're going to need it, get it now. */ - switch (r_type) - { - case R_MIPS_CALL16: - case R_MIPS_GOT16: - case R_MIPS_GOT_DISP: - case R_MIPS_GOT_HI16: - case R_MIPS_CALL_HI16: - case R_MIPS_GOT_LO16: - case R_MIPS_CALL_LO16: - /* Find the index into the GOT where this value is located. */ - if (!local_p) - { - BFD_ASSERT (addend == 0); - g = mips_elf64_global_got_index (elf_hash_table (info)->dynobj, - (struct elf_link_hash_entry*) h); - if (! elf_hash_table(info)->dynamic_sections_created - || (info->shared - && (info->symbolic || h->root.dynindx == -1) - && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) - { - /* This is a static link or a -Bsymbolic link. The - symbol is defined locally, or was forced to be local. - We must initialize this entry in the GOT. */ - bfd *tmpbfd = elf_hash_table (info)->dynobj; - - asection *sgot = bfd_get_section_by_name (tmpbfd, ".got"); - bfd_put_64 (tmpbfd, symbol + addend, sgot->contents + g); - } - } - else if (r_type == R_MIPS_GOT16 || r_type == R_MIPS_CALL16) - /* There's no need to create a local GOT entry here; the - calculation for a local GOT16 entry does not involve G. */ - break; - else - { - g = mips_elf64_local_got_index (abfd, info, symbol + addend); - if (g == (bfd_vma) -1) - return false; - } - - /* Convert GOT indices to actual offsets. */ - g = mips_elf64_got_offset_from_index (elf_hash_table (info)->dynobj, - abfd, g); - break; - - case R_MIPS_HI16: - case R_MIPS_LO16: - case R_MIPS_GPREL16: - case R_MIPS_GPREL32: - case R_MIPS_LITERAL: - gp0 = _bfd_get_gp_value (input_bfd); - gp = _bfd_get_gp_value (abfd); - break; - - default: - break; - } - - /* Figure out what kind of relocation is being performed. */ - switch (r_type) - { - case R_MIPS_NONE: - return bfd_reloc_continue; - - case R_MIPS_16: - value = symbol + mips_elf64_sign_extend (addend, 16); - overflowed_p = mips_elf64_overflow_p (value, 16); - break; - - case R_MIPS_32: - case R_MIPS_REL32: - case R_MIPS_64: - if ((info->shared - || (elf_hash_table (info)->dynamic_sections_created - && h != NULL - && ((h->root.elf_link_hash_flags - & ELF_LINK_HASH_DEF_DYNAMIC) != 0) - && ((h->root.elf_link_hash_flags - & ELF_LINK_HASH_DEF_REGULAR) == 0))) - && r_symndx != 0 - && (input_section->flags & SEC_ALLOC) != 0) - { - /* If we're creating a shared library, or this relocation is - against a symbol in a shared library, then we can't know - where the symbol will end up. So, we create a relocation - record in the output, and leave the job up to the dynamic - linker. */ - value = addend; - if (!mips_elf64_create_dynamic_relocation (abfd, info, relocation, - h, sec, symbol, &value, - input_section)) - return false; - } - else - { - if (r_type != R_MIPS_REL32) - value = symbol + addend; - else - value = addend; - } - value &= howto->dst_mask; - break; - - case R_MIPS_PC32: - case R_MIPS_PC64: - case R_MIPS_GNU_REL_LO16: - value = symbol + addend - p; - value &= howto->dst_mask; - break; - - case R_MIPS_GNU_REL16_S2: - value = symbol + mips_elf64_sign_extend (addend << 2, 18) - p; - overflowed_p = mips_elf64_overflow_p (value, 18); - value = (value >> 2) & howto->dst_mask; - break; - - case R_MIPS_GNU_REL_HI16: - value = mips_elf64_high (addend + symbol - p); - value &= howto->dst_mask; - break; - - case R_MIPS16_26: - /* The calculation for R_MIPS16_26 is just the same as for an - R_MIPS_26. It's only the storage of the relocated field into - the output file that's different. That's handled in - mips_elf_perform_relocation. So, we just fall through to the - R_MIPS_26 case here. */ - case R_MIPS_26: - if (local_p) - value = (((addend << 2) | ((p + 4) & 0xf0000000)) + symbol) >> 2; - else - value = (mips_elf64_sign_extend (addend << 2, 28) + symbol) >> 2; - value &= howto->dst_mask; - break; - - case R_MIPS_HI16: - value = mips_elf64_high (addend + symbol); - value &= howto->dst_mask; - break; - - case R_MIPS_LO16: - value = (addend + symbol) & 0xffff; - value &= howto->dst_mask; - break; - - case R_MIPS_LITERAL: - /* Because we don't merge literal sections, we can handle this - just like R_MIPS_GPREL16. In the long run, we should merge - shared literals, and then we will need to additional work - here. */ - - /* Fall through. */ - - case R_MIPS_GPREL16: - if (local_p) - value = mips_elf64_sign_extend (addend, 16) + symbol + gp0 - gp; - else - value = mips_elf64_sign_extend (addend, 16) + symbol - gp; - overflowed_p = mips_elf64_overflow_p (value, 16); - break; - - case R_MIPS_PC16: - value = mips_elf64_sign_extend (addend, 16) + symbol - p; - overflowed_p = mips_elf64_overflow_p (value, 16); - value = (bfd_vma) ((bfd_signed_vma) value / 4); - break; - - case R_MIPS_GOT16: - case R_MIPS_CALL16: - if (local_p) - { - boolean forced; - - /* The special case is when the symbol is forced to be local. We - need the full address in the GOT since no R_MIPS_LO16 relocation - follows. */ - forced = ! mips_elf64_local_relocation_p (input_bfd, relocation, - local_sections, false); - value = mips_elf64_got16_entry (abfd, info, symbol + addend, forced); - if (value == (bfd_vma) -1) - return false; - value - = mips_elf64_got_offset_from_index (elf_hash_table (info)->dynobj, - abfd, - value); - overflowed_p = mips_elf64_overflow_p (value, 16); - break; - } - - /* Fall through. */ - - case R_MIPS_GOT_DISP: - value = g; - overflowed_p = mips_elf64_overflow_p (value, 16); - break; - - case R_MIPS_GPREL32: - value = (addend + symbol + gp0 - gp) & howto->dst_mask; - break; - - case R_MIPS_GOT_HI16: - case R_MIPS_CALL_HI16: - /* We're allowed to handle these two relocations identically. - The dynamic linker is allowed to handle the CALL relocations - differently by creating a lazy evaluation stub. */ - value = g; - value = mips_elf64_high (value); - value &= howto->dst_mask; - break; - - case R_MIPS_GOT_LO16: - case R_MIPS_CALL_LO16: - value = g & howto->dst_mask; - break; - - case R_MIPS_GOT_PAGE: - value = mips_elf64_got_page (abfd, info, symbol + addend, NULL); - if (value == (bfd_vma) -1) - return false; - value = mips_elf64_got_offset_from_index (elf_hash_table (info)->dynobj, - abfd, - value); - overflowed_p = mips_elf64_overflow_p (value, 16); - break; - - case R_MIPS_GOT_OFST: - mips_elf64_got_page (abfd, info, symbol + addend, &value); - overflowed_p = mips_elf64_overflow_p (value, 16); - break; - - case R_MIPS_SUB: - value = symbol - addend; - value &= howto->dst_mask; - break; - - case R_MIPS_HIGHER: - value = mips_elf64_higher (addend + symbol); - value &= howto->dst_mask; - break; - - case R_MIPS_HIGHEST: - value = mips_elf64_highest (addend + symbol); - value &= howto->dst_mask; - break; - - case R_MIPS_SCN_DISP: - value = symbol + addend - sec->output_offset; - value &= howto->dst_mask; - break; - - case R_MIPS_PJUMP: - case R_MIPS_JALR: - /* Both of these may be ignored. R_MIPS_JALR is an optimization - hint; we could improve performance by honoring that hint. */ - return bfd_reloc_continue; - - case R_MIPS_GNU_VTINHERIT: - case R_MIPS_GNU_VTENTRY: - /* We don't do anything with these at present. */ - return bfd_reloc_continue; - - default: - /* An unrecognized relocation type. */ - return bfd_reloc_notsupported; - } - - /* Store the VALUE for our caller. */ - *valuep = value; - return overflowed_p ? bfd_reloc_overflow : bfd_reloc_ok; -} - -/* Obtain the field relocated by RELOCATION. */ - -static bfd_vma -mips_elf64_obtain_contents (howto, relocation, input_bfd, contents) - reloc_howto_type *howto; - const Elf_Internal_Rela *relocation; - bfd *input_bfd; - bfd_byte *contents; -{ - bfd_byte *location = contents + relocation->r_offset; - - /* Obtain the bytes. */ - return bfd_get (8 * bfd_get_reloc_size (howto), input_bfd, location); -} - -/* It has been determined that the result of the RELOCATION is the - VALUE. Use HOWTO to place VALUE into the output file at the - appropriate position. The SECTION is the section to which the - relocation applies. If REQUIRE_JALX is true, then the opcode used - for the relocation must be either JAL or JALX, and it is - unconditionally converted to JALX. - - Returns false if anything goes wrong. */ - -static boolean -mips_elf64_perform_relocation (info, howto, relocation, value, - input_bfd, input_section, - contents, require_jalx) - struct bfd_link_info *info; - reloc_howto_type *howto; - const Elf_Internal_Rela *relocation; - bfd_vma value; - bfd *input_bfd; - asection *input_section; - bfd_byte *contents; - boolean require_jalx; -{ - bfd_vma x; - bfd_byte *location; - int r_type = ELF32_R_TYPE (relocation->r_info); - - /* Figure out where the relocation is occurring. */ - location = contents + relocation->r_offset; - - /* Obtain the current value. */ - x = mips_elf64_obtain_contents (howto, relocation, input_bfd, contents); - - /* Clear the field we are setting. */ - x &= ~howto->dst_mask; - - /* If this is the R_MIPS16_26 relocation, we must store the - value in a funny way. */ - if (r_type == R_MIPS16_26) - { - /* R_MIPS16_26 is used for the mips16 jal and jalx instructions. - Most mips16 instructions are 16 bits, but these instructions - are 32 bits. - - The format of these instructions is: - - +--------------+--------------------------------+ - ! JALX ! X! Imm 20:16 ! Imm 25:21 ! - +--------------+--------------------------------+ - ! Immediate 15:0 ! - +-----------------------------------------------+ - - JALX is the 5-bit value 00011. X is 0 for jal, 1 for jalx. - Note that the immediate value in the first word is swapped. - - When producing a relocateable object file, R_MIPS16_26 is - handled mostly like R_MIPS_26. In particular, the addend is - stored as a straight 26-bit value in a 32-bit instruction. - (gas makes life simpler for itself by never adjusting a - R_MIPS16_26 reloc to be against a section, so the addend is - always zero). However, the 32 bit instruction is stored as 2 - 16-bit values, rather than a single 32-bit value. In a - big-endian file, the result is the same; in a little-endian - file, the two 16-bit halves of the 32 bit value are swapped. - This is so that a disassembler can recognize the jal - instruction. - - When doing a final link, R_MIPS16_26 is treated as a 32 bit - instruction stored as two 16-bit values. The addend A is the - contents of the targ26 field. The calculation is the same as - R_MIPS_26. When storing the calculated value, reorder the - immediate value as shown above, and don't forget to store the - value as two 16-bit values. - - To put it in MIPS ABI terms, the relocation field is T-targ26-16, - defined as - - big-endian: - +--------+----------------------+ - | | | - | | targ26-16 | - |31 26|25 0| - +--------+----------------------+ - - little-endian: - +----------+------+-------------+ - | | | | - | sub1 | | sub2 | - |0 9|10 15|16 31| - +----------+--------------------+ - where targ26-16 is sub1 followed by sub2 (i.e., the addend field A is - ((sub1 << 16) | sub2)). - - When producing a relocateable object file, the calculation is - (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2) - When producing a fully linked file, the calculation is - let R = (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2) - ((R & 0x1f0000) << 5) | ((R & 0x3e00000) >> 5) | (R & 0xffff) */ - - if (!info->relocateable) - /* Shuffle the bits according to the formula above. */ - value = (((value & 0x1f0000) << 5) - | ((value & 0x3e00000) >> 5) - | (value & 0xffff)); - } - else if (r_type == R_MIPS16_GPREL) - { - /* R_MIPS16_GPREL is used for GP-relative addressing in mips16 - mode. A typical instruction will have a format like this: - - +--------------+--------------------------------+ - ! EXTEND ! Imm 10:5 ! Imm 15:11 ! - +--------------+--------------------------------+ - ! Major ! rx ! ry ! Imm 4:0 ! - +--------------+--------------------------------+ - - EXTEND is the five bit value 11110. Major is the instruction - opcode. - - This is handled exactly like R_MIPS_GPREL16, except that the - addend is retrieved and stored as shown in this diagram; that - is, the Imm fields above replace the V-rel16 field. - - All we need to do here is shuffle the bits appropriately. As - above, the two 16-bit halves must be swapped on a - little-endian system. */ - value = (((value & 0x7e0) << 16) - | ((value & 0xf800) << 5) - | (value & 0x1f)); - } - - /* Set the field. */ - x |= (value & howto->dst_mask); - - /* If required, turn JAL into JALX. */ - if (require_jalx) - { - boolean ok; - bfd_vma opcode = x >> 26; - bfd_vma jalx_opcode; - - /* Check to see if the opcode is already JAL or JALX. */ - if (r_type == R_MIPS16_26) - { - ok = ((opcode == 0x6) || (opcode == 0x7)); - jalx_opcode = 0x7; - } - else - { - ok = ((opcode == 0x3) || (opcode == 0x1d)); - jalx_opcode = 0x1d; - } - - /* If the opcode is not JAL or JALX, there's a problem. */ - if (!ok) - { - (*_bfd_error_handler) - (_("%s: %s+0x%lx: jump to stub routine which is not jal"), - bfd_archive_filename (input_bfd), - input_section->name, - (unsigned long) relocation->r_offset); - bfd_set_error (bfd_error_bad_value); - return false; - } - - /* Make this the JALX opcode. */ - x = (x & ~(0x3f << 26)) | (jalx_opcode << 26); - } - - /* Swap the high- and low-order 16 bits on little-endian systems - when doing a MIPS16 relocation. */ - if ((r_type == R_MIPS16_GPREL || r_type == R_MIPS16_26) - && bfd_little_endian (input_bfd)) - x = (((x & 0xffff) << 16) | ((x & 0xffff0000) >> 16)); - - /* Put the value into the output. */ - bfd_put (8 * bfd_get_reloc_size (howto), input_bfd, x, location); - return true; -} - -/* Returns true if SECTION is a MIPS16 stub section. */ - -static boolean -mips_elf64_stub_section_p (abfd, section) - bfd *abfd ATTRIBUTE_UNUSED; - asection *section; -{ - const char *name = bfd_get_section_name (abfd, section); - - return (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0 - || strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0 - || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0); -} - -/* Relocate a MIPS ELF64 section. */ - -static boolean -mips_elf64_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; -{ - Elf_Internal_Rela *rel; - const Elf_Internal_Rela *relend; - bfd_vma addend = 0; - boolean use_saved_addend_p = false; - struct elf_backend_data *bed; - - bed = get_elf_backend_data (output_bfd); - relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel; - for (rel = relocs; rel < relend; ++rel) - { - const char *name; - bfd_vma value; - reloc_howto_type *howto; - boolean require_jalx; - /* True if the relocation is a RELA relocation, rather than a - REL relocation. */ - boolean rela_relocation_p = true; - int r_type = ELF64_MIPS_R_TYPE (rel->r_info); - const char *msg = (const char *) NULL; - - /* Find the relocation howto for this relocation. */ - howto = &mips_elf64_howto_table_rela[r_type]; - - if (!use_saved_addend_p) - { - Elf_Internal_Shdr *rel_hdr; - - /* If these relocations were originally of the REL variety, - we must pull the addend out of the field that will be - relocated. Otherwise, we simply use the contents of the - RELA relocation. To determine which flavor or relocation - this is, we depend on the fact that the INPUT_SECTION's - REL_HDR is read before its REL_HDR2. */ - rel_hdr = &elf_section_data (input_section)->rel_hdr; - if ((size_t) (rel - relocs) - >= (NUM_SHDR_ENTRIES (rel_hdr) * bed->s->int_rels_per_ext_rel)) - rel_hdr = elf_section_data (input_section)->rel_hdr2; - if (rel_hdr->sh_entsize - == (get_elf_backend_data (input_bfd)->s->sizeof_rel)) - { - /* Note that this is a REL relocation. */ - rela_relocation_p = false; - - /* Find the relocation howto for this relocation. */ - howto = &mips_elf64_howto_table_rel[r_type]; - - /* Get the addend, which is stored in the input file. */ - addend = mips_elf64_obtain_contents (howto, - rel, - input_bfd, - contents); - addend &= howto->src_mask; - - /* For some kinds of relocations, the ADDEND is a - combination of the addend stored in two different - relocations. */ - if (r_type == R_MIPS_HI16 - || r_type == R_MIPS_GNU_REL_HI16 - || (r_type == R_MIPS_GOT16 - && mips_elf64_local_relocation_p (input_bfd, rel, - local_sections, false))) - { - bfd_vma l; - const Elf_Internal_Rela *lo16_relocation; - reloc_howto_type *lo16_howto; - int lo; - - /* The combined value is the sum of the HI16 addend, - left-shifted by sixteen bits, and the LO16 - addend, sign extended. (Usually, the code does - a `lui' of the HI16 value, and then an `addiu' of - the LO16 value.) - - Scan ahead to find a matching LO16 relocation. */ - if (r_type == R_MIPS_GNU_REL_HI16) - lo = R_MIPS_GNU_REL_LO16; - else - lo = R_MIPS_LO16; - lo16_relocation - = mips_elf64_next_relocation (lo, rel, relend); - if (lo16_relocation == NULL) - return false; - - /* Obtain the addend kept there. */ - if (rela_relocation_p == false) - lo16_howto = &mips_elf64_howto_table_rel[lo]; - else - lo16_howto = &mips_elf64_howto_table_rela[lo]; - l = mips_elf64_obtain_contents (lo16_howto, - lo16_relocation, - input_bfd, contents); - l &= lo16_howto->src_mask; - l = mips_elf64_sign_extend (l, 16); - - addend <<= 16; - - /* Compute the combined addend. */ - addend += l; - } - } - else - addend = rel->r_addend; - } - - if (info->relocateable) - { - Elf_Internal_Sym *sym; - unsigned long r_symndx; - - /* Since we're just relocating, all we need to do is copy - the relocations back out to the object file, unless - they're against a section symbol, in which case we need - to adjust by the section offset, or unless they're GP - relative in which case we need to adjust by the amount - that we're adjusting GP in this relocateable object. */ - - if (!mips_elf64_local_relocation_p (input_bfd, rel, local_sections, - false)) - /* There's nothing to do for non-local relocations. */ - continue; - - if (r_type == R_MIPS_GPREL16 - || r_type == R_MIPS_GPREL32 - || r_type == R_MIPS_LITERAL) - addend -= (_bfd_get_gp_value (output_bfd) - - _bfd_get_gp_value (input_bfd)); - else if (r_type == R_MIPS_26 || r_type == R_MIPS_GNU_REL16_S2) - /* The addend is stored without its two least - significant bits (which are always zero.) In a - non-relocateable link, calculate_relocation will do - this shift; here, we must do it ourselves. */ - addend <<= 2; - - r_symndx = ELF64_R_SYM (rel->r_info); - sym = local_syms + r_symndx; - if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) - /* Adjust the addend appropriately. */ - addend += local_sections[r_symndx]->output_offset; - -#if 0 - /* If the relocation is for a R_MIPS_HI16 or R_MIPS_GOT16, - then we only want to write out the high-order 16 bits. - The subsequent R_MIPS_LO16 will handle the low-order bits. */ - if (r_type == R_MIPS_HI16 || r_type == R_MIPS_GOT16 - || r_type == R_MIPS_GNU_REL_HI16) - addend = mips_elf64_high (addend); - else if (r_type == R_MIPS_HIGHER) - addend = mips_elf64_higher (addend); - else if (r_type == R_MIPS_HIGHEST) - addend = mips_elf64_highest (addend); -#endif - /* If the relocation is for an R_MIPS_26 relocation, then - the two low-order bits are not stored in the object file; - they are implicitly zero. */ - if (r_type == R_MIPS_26 || r_type == R_MIPS_GNU_REL16_S2) - addend >>= 2; - - if (rela_relocation_p) - /* If this is a RELA relocation, just update the addend. - We have to cast away constness for REL. */ - rel->r_addend = addend; - else - { - /* Otherwise, we have to write the value back out. Note - that we use the source mask, rather than the - destination mask because the place to which we are - writing will be source of the addend in the final - link. */ - addend &= howto->src_mask; - - if (!mips_elf64_perform_relocation (info, howto, rel, addend, - input_bfd, input_section, - contents, false)) - return false; - } - - /* Go on to the next relocation. */ - continue; - } - - /* In the N32 and 64-bit ABIs there may be multiple consecutive - relocations for the same offset. In that case we are - supposed to treat the output of each relocation as the addend - for the next. */ - if (rel + 1 < relend - && rel->r_offset == rel[1].r_offset - && ELF64_MIPS_R_TYPE (rel[1].r_info) != R_MIPS_NONE) - use_saved_addend_p = true; - else - use_saved_addend_p = false; - - /* Figure out what value we are supposed to relocate. */ - switch (mips_elf64_calculate_relocation (output_bfd, input_bfd, - input_section, info, rel, - addend, howto, local_syms, - local_sections, &value, &name, - &require_jalx)) - { - case bfd_reloc_continue: - /* There's nothing to do. */ - continue; - - case bfd_reloc_undefined: - /* mips_elf64_calculate_relocation already called the - undefined_symbol callback. There's no real point in - trying to perform the relocation at this point, so we - just skip ahead to the next relocation. */ - continue; - - case bfd_reloc_notsupported: - msg = _("internal error: unsupported relocation error"); - info->callbacks->warning - (info, msg, name, input_bfd, input_section, rel->r_offset); - return false; - - case bfd_reloc_overflow: - if (use_saved_addend_p) - /* Ignore overflow until we reach the last relocation for - a given location. */ - ; - else - { - BFD_ASSERT (name != NULL); - if (! ((*info->callbacks->reloc_overflow) - (info, name, howto->name, (bfd_vma) 0, - input_bfd, input_section, rel->r_offset))) - return false; - } - break; - - case bfd_reloc_ok: - break; - - default: - abort (); - break; - } - - /* If we've got another relocation for the address, keep going - until we reach the last one. */ - if (use_saved_addend_p) - { - addend = value; - continue; - } - - /* Actually perform the relocation. */ - if (!mips_elf64_perform_relocation (info, howto, rel, value, input_bfd, - input_section, contents, - require_jalx)) - return false; - } - - return true; -} - -/* Create dynamic sections when linking against a dynamic object. */ - -boolean -mips_elf64_create_dynamic_sections (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - flagword flags; - register asection *s; - - flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY - | SEC_LINKER_CREATED | SEC_READONLY); - - /* Mips ABI requests the .dynamic section to be read only. */ - s = bfd_get_section_by_name (abfd, ".dynamic"); - if (s != NULL) - { - if (! bfd_set_section_flags (abfd, s, flags)) - return false; - } - - /* We need to create .got section. */ - if (! mips_elf64_create_got_section (abfd, info)) - return false; - - /* Create the .msym section on IRIX6. It is used by the dynamic - linker to speed up dynamic relocations, and to avoid computing - the ELF hash for symbols. */ - if (!mips_elf64_create_msym_section (abfd)) - return false; - - /* Create .stub section. */ - if (bfd_get_section_by_name (abfd, ".MIPS.stubs") == NULL) - { - s = bfd_make_section (abfd, ".MIPS.stubs"); - if (s == NULL - || ! bfd_set_section_flags (abfd, s, flags | SEC_CODE) - || ! bfd_set_section_alignment (abfd, s, 3)) - 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. */ - -boolean -mips_elf64_adjust_dynamic_symbol (info, h) - struct bfd_link_info *info; - struct elf_link_hash_entry *h; -{ - bfd *dynobj; - struct mips_elf64_link_hash_entry *hmips; - asection *s; - - 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 symbol is defined in a dynamic object, we need to copy - any R_MIPS_32 or R_MIPS_REL32 relocs against it into the output - file. */ - hmips = (struct mips_elf64_link_hash_entry *) h; - if (! info->relocateable - && hmips->possibly_dynamic_relocs != 0 - && (h->root.type == bfd_link_hash_defweak - || (h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_REGULAR) == 0)) - { - mips_elf64_allocate_dynamic_relocations (dynobj, - hmips->possibly_dynamic_relocs); - if (hmips->readonly_reloc) - /* We tell the dynamic linker that there are relocations - against the text segment. */ - info->flags |= DF_TEXTREL; - } - - /* For a function, create a stub, if allowed. */ - if (! hmips->no_fn_stub - && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) - { - if (! elf_hash_table (info)->dynamic_sections_created) - return true; - - /* If this symbol is not defined in a regular file, then set - the symbol to the stub location. This is required to make - function pointers compare as equal between the normal - executable and the shared library. */ - if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) - { - /* We need .stub section. */ - s = bfd_get_section_by_name (dynobj, ".MIPS.stubs"); - BFD_ASSERT (s != NULL); - - h->root.u.def.section = s; - h->root.u.def.value = s->_raw_size; - - /* XXX Write this stub address somewhere. */ - h->plt.offset = s->_raw_size; - - /* Make room for this stub code. */ - s->_raw_size += MIPS_FUNCTION_STUB_SIZE; - - /* The last half word of the stub will be filled with the index - of this symbol in .dynsym section. */ - return true; - } - } - else if ((h->type == STT_FUNC) - && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) == 0) - { - /* This will set the entry for this symbol in the GOT to 0, and - the dynamic linker will take care of this. */ - h->root.u.def.value = 0; - 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. */ - - return true; -} - -/* This function is called after all the input files have been read, - and the input sections have been assigned to output sections. */ - -boolean -mips_elf64_always_size_sections (output_bfd, info) - bfd *output_bfd ATTRIBUTE_UNUSED; - struct bfd_link_info *info ATTRIBUTE_UNUSED; -{ - if (info->relocateable - || ! mips_elf64_hash_table (info)->mips16_stubs_seen) - return true; - - mips_elf64_link_hash_traverse (mips_elf64_hash_table (info), - mips_elf64_check_mips16_stubs, - (PTR) NULL); - - return true; -} - -/* Check the mips16 stubs for a particular symbol, and see if we can - discard them. */ - -static boolean -mips_elf64_check_mips16_stubs (h, data) - struct mips_elf64_link_hash_entry *h; - PTR data ATTRIBUTE_UNUSED; -{ - if (h->root.root.type == bfd_link_hash_warning) - h = (struct mips_elf64_link_hash_entry *) h->root.root.u.i.link; - - if (h->fn_stub != NULL - && ! h->need_fn_stub) - { - /* We don't need the fn_stub; the only references to this symbol - are 16 bit calls. Clobber the size to 0 to prevent it from - being included in the link. */ - h->fn_stub->_raw_size = 0; - h->fn_stub->_cooked_size = 0; - h->fn_stub->flags &= ~SEC_RELOC; - h->fn_stub->reloc_count = 0; - h->fn_stub->flags |= SEC_EXCLUDE; - } - - if (h->call_stub != NULL - && h->root.other == STO_MIPS16) - { - /* We don't need the call_stub; this is a 16 bit function, so - calls from other 16 bit functions are OK. Clobber the size - to 0 to prevent it from being included in the link. */ - h->call_stub->_raw_size = 0; - h->call_stub->_cooked_size = 0; - h->call_stub->flags &= ~SEC_RELOC; - h->call_stub->reloc_count = 0; - h->call_stub->flags |= SEC_EXCLUDE; - } - - if (h->call_fp_stub != NULL - && h->root.other == STO_MIPS16) - { - /* We don't need the call_stub; this is a 16 bit function, so - calls from other 16 bit functions are OK. Clobber the size - to 0 to prevent it from being included in the link. */ - h->call_fp_stub->_raw_size = 0; - h->call_fp_stub->_cooked_size = 0; - h->call_fp_stub->flags &= ~SEC_RELOC; - h->call_fp_stub->reloc_count = 0; - h->call_fp_stub->flags |= SEC_EXCLUDE; - } - - return true; -} - -/* Set the sizes of the dynamic sections. */ - -boolean -mips_elf64_size_dynamic_sections (output_bfd, info) - bfd *output_bfd; - struct bfd_link_info *info; -{ - bfd *dynobj; - asection *s; - boolean reltext; - struct mips_elf64_got_info *g = NULL; - - 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 = strlen ("/usr/lib64/libc.so.1") + 1; - s->contents = (bfd_byte *) "/usr/lib64/libc.so.1"; - } - } - - /* The check_relocs and adjust_dynamic_symbol entry points have - determined the sizes of the various dynamic sections. Allocate - memory for them. */ - reltext = false; - for (s = dynobj->sections; s != NULL; s = s->next) - { - const char *name; - boolean strip; - - /* 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); - - if ((s->flags & SEC_LINKER_CREATED) == 0) - continue; - - strip = false; - - if (strncmp (name, ".rel", 4) == 0) - { - if (s->_raw_size == 0) - { - /* We only strip the section if the output section name - has the same name. Otherwise, there might be several - input sections for this output section. FIXME: This - code is probably not needed these days anyhow, since - the linker now does not create empty output sections. */ - if (s->output_section != NULL - && strcmp (name, - bfd_get_section_name (s->output_section->owner, - s->output_section)) == 0) - 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. - If the relocation section is .rel.dyn, we always - assert a DT_TEXTREL entry rather than testing whether - there exists a relocation to a read only section or - not. */ - outname = bfd_get_section_name (output_bfd, - s->output_section); - target = bfd_get_section_by_name (output_bfd, outname + 4); - if ((target != NULL - && (target->flags & SEC_READONLY) != 0 - && (target->flags & SEC_ALLOC) != 0) - || strcmp (outname, "rel.dyn") == 0) - reltext = true; - - /* We use the reloc_count field as a counter if we need - to copy relocs into the output file. */ - if (strcmp (name, "rel.dyn") != 0) - s->reloc_count = 0; - } - } - else if (strncmp (name, ".got", 4) == 0) - { - int i; - bfd_size_type loadable_size = 0; - bfd_size_type local_gotno; - bfd *sub; - - BFD_ASSERT (elf_section_data (s) != NULL); - g = (struct mips_elf64_got_info *) elf_section_data (s)->tdata; - BFD_ASSERT (g != NULL); - - /* Calculate the total loadable size of the output. That - will give us the maximum number of GOT_PAGE entries - required. */ - for (sub = info->input_bfds; sub; sub = sub->link_next) - { - asection *subsection; - - for (subsection = sub->sections; - subsection; - subsection = subsection->next) - { - if ((subsection->flags & SEC_ALLOC) == 0) - continue; - loadable_size += (subsection->_raw_size + 0xf) & ~0xf; - } - } - loadable_size += MIPS_FUNCTION_STUB_SIZE; - - /* Assume there are two loadable segments consisting of - contiguous sections. Is 5 enough? */ - local_gotno = (loadable_size >> 16) + 5; - /* It's possible we will need GOT_PAGE entries as well as - GOT16 entries. Often, these will be able to share GOT - entries, but not always. */ - local_gotno *= 2; - - g->local_gotno += local_gotno; - s->_raw_size += local_gotno * 8; - - /* There has to be a global GOT entry for every symbol with - a dynamic symbol table index of DT_MIPS_GOTSYM or - higher. Therefore, it make sense to put those symbols - that need GOT entries at the end of the symbol table. We - do that here. */ - if (!mips_elf64_sort_hash_table (info, 1)) - return false; - - if (g->global_gotsym != NULL) - i = elf_hash_table (info)->dynsymcount - g->global_gotsym->dynindx; - else - /* If there are no global symbols, or none requiring - relocations, then GLOBAL_GOTSYM will be NULL. */ - i = 0; - g->global_gotno = i; - s->_raw_size += i * 8; - } - else if (strcmp (name, ".MIPS.stubs") == 0) - { - /* Irix rld assumes that the function stub isn't at the end - of .text section. So put a dummy. XXX */ - s->_raw_size += MIPS_FUNCTION_STUB_SIZE; - } - else if (strcmp (name, ".msym") - == 0) - s->_raw_size = (sizeof (Elf32_External_Msym) - * (elf_hash_table (info)->dynsymcount - + bfd_count_sections (output_bfd))); - else if (strncmp (name, ".init", 5) != 0) - { - /* It's not one of our sections, so don't allocate space. */ - continue; - } - - if (strip) - { - _bfd_strip_section_from_output (info, s); - continue; - } - - /* Allocate memory for the section contents. */ - s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); - if (s->contents == NULL && s->_raw_size != 0) - { - bfd_set_error (bfd_error_no_memory); - return false; - } - } - - if (elf_hash_table (info)->dynamic_sections_created) - { - /* Add some entries to the .dynamic section. We fill in the - values later, in elf_mips_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) - { - /* SGI object has the equivalence of DT_DEBUG in the - DT_MIPS_RLD_MAP entry. */ - if (!bfd_elf64_add_dynamic_entry (info, DT_MIPS_RLD_MAP, 0)) - return false; - if (!SGI_COMPAT (output_bfd)) - { - if (!bfd_elf64_add_dynamic_entry (info, DT_DEBUG, 0)) - return false; - } - } - else - { - /* Shared libraries on traditional mips have DT_DEBUG. */ - if (!SGI_COMPAT (output_bfd)) - { - if (!bfd_elf64_add_dynamic_entry (info, DT_DEBUG, 0)) - return false; - } - } - - if (reltext && SGI_COMPAT (output_bfd)) - info->flags |= DF_TEXTREL; - - if ((info->flags & DF_TEXTREL) != 0) - { - if (! bfd_elf64_add_dynamic_entry (info, DT_TEXTREL, 0)) - return false; - } - - if (! bfd_elf64_add_dynamic_entry (info, DT_PLTGOT, 0)) - return false; - - if (bfd_get_section_by_name (dynobj, "rel.dyn")) - { - if (! bfd_elf64_add_dynamic_entry (info, DT_REL, 0)) - return false; - - if (! bfd_elf64_add_dynamic_entry (info, DT_RELSZ, 0)) - return false; - - if (! bfd_elf64_add_dynamic_entry (info, DT_RELENT, 0)) - return false; - } - - if (SGI_COMPAT (output_bfd)) - { - if (!bfd_elf64_add_dynamic_entry (info, DT_MIPS_CONFLICTNO, 0)) - return false; - } - - if (SGI_COMPAT (output_bfd)) - { - if (!bfd_elf64_add_dynamic_entry (info, DT_MIPS_LIBLISTNO, 0)) - return false; - } - - if (bfd_get_section_by_name (dynobj, ".conflict") != NULL) - { - if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_CONFLICT, 0)) - return false; - - s = bfd_get_section_by_name (dynobj, ".liblist"); - BFD_ASSERT (s != NULL); - - if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_LIBLIST, 0)) - return false; - } - - if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_RLD_VERSION, 0)) - return false; - - if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_FLAGS, 0)) - return false; - -#if 0 - /* Time stamps in executable files are a bad idea. */ - if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_TIME_STAMP, 0)) - return false; -#endif - -#if 0 /* FIXME */ - if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_ICHECKSUM, 0)) - return false; -#endif - -#if 0 /* FIXME */ - if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_IVERSION, 0)) - return false; -#endif - - if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_BASE_ADDRESS, 0)) - return false; - - if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_LOCAL_GOTNO, 0)) - return false; - - if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_SYMTABNO, 0)) - return false; - - if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_UNREFEXTNO, 0)) - return false; - - if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_GOTSYM, 0)) - return false; - - if ((bfd_get_section_by_name(dynobj, ".MIPS.options")) - && !bfd_elf64_add_dynamic_entry (info, DT_MIPS_OPTIONS, 0)) - return false; - - if (bfd_get_section_by_name (dynobj, ".msym") - && !bfd_elf64_add_dynamic_entry (info, DT_MIPS_MSYM, 0)) - return false; - } - - return true; -} - -/* Finish up dynamic symbol handling. We set the contents of various - dynamic sections here. */ - -boolean -mips_elf64_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; - bfd_vma gval; - asection *sgot; - asection *smsym; - struct mips_elf64_got_info *g; - const char *name; - struct mips_elf64_link_hash_entry *mh; - - dynobj = elf_hash_table (info)->dynobj; - gval = sym->st_value; - mh = (struct mips_elf64_link_hash_entry *) h; - - if (h->plt.offset != (bfd_vma) -1) - { - asection *s; - bfd_byte stub[MIPS_FUNCTION_STUB_SIZE]; - - /* This symbol has a stub. Set it up. */ - - BFD_ASSERT (h->dynindx != -1); - - s = bfd_get_section_by_name (dynobj, ".MIPS.stubs"); - BFD_ASSERT (s != NULL); - - /* FIXME: Can h->dynindex be more than 64K? */ - if (h->dynindx & 0xffff0000) - return false; - - /* Fill the stub. */ - bfd_put_32 (output_bfd, STUB_LW, stub); - bfd_put_32 (output_bfd, STUB_MOVE, stub + 4); - bfd_put_32 (output_bfd, STUB_JALR, stub + 8); - bfd_put_32 (output_bfd, STUB_LI16 + h->dynindx, stub + 12); - - BFD_ASSERT (h->plt.offset <= s->_raw_size); - memcpy (s->contents + h->plt.offset, stub, MIPS_FUNCTION_STUB_SIZE); - - /* Mark the symbol as undefined. plt.offset != -1 occurs - only for the referenced symbol. */ - sym->st_shndx = SHN_UNDEF; - - /* The run-time linker uses the st_value field of the symbol - to reset the global offset table entry for this external - to its stub address when unlinking a shared object. */ - gval = s->output_section->vma + s->output_offset + h->plt.offset; - sym->st_value = gval; - } - - BFD_ASSERT (h->dynindx != -1 - || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0); - - sgot = bfd_get_section_by_name (dynobj, ".got"); - BFD_ASSERT (sgot != NULL); - BFD_ASSERT (elf_section_data (sgot) != NULL); - g = (struct mips_elf64_got_info *) elf_section_data (sgot)->tdata; - BFD_ASSERT (g != NULL); - - /* Run through the global symbol table, creating GOT entries for all - the symbols that need them. */ - if (g->global_gotsym != NULL - && h->dynindx >= g->global_gotsym->dynindx) - { - bfd_vma offset; - bfd_vma value; - - if (sym->st_value) - value = sym->st_value; - else - { - /* For an entity defined in a shared object, this will be - NULL. (For functions in shared objects for - which we have created stubs, ST_VALUE will be non-NULL. - That's because such the functions are now no longer defined - in a shared object.) */ - - if (info->shared && h->root.type == bfd_link_hash_undefined) - value = 0; - else - value = h->root.u.def.value; - } - offset = mips_elf64_global_got_index (dynobj, h); - bfd_put_64 (output_bfd, value, sgot->contents + offset); - } - - /* Create a .msym entry, if appropriate. */ - smsym = bfd_get_section_by_name (dynobj, ".msym"); - if (smsym) - { - Elf32_Internal_Msym msym; - - msym.ms_hash_value = bfd_elf_hash (h->root.root.string); - /* It is undocumented what the `1' indicates, but IRIX6 uses - this value. */ - msym.ms_info = ELF32_MS_INFO (mh->min_dyn_reloc_index, 1); - mips_elf64_swap_msym_out - (dynobj, &msym, - ((Elf32_External_Msym *) smsym->contents) + h->dynindx); - } - - /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ - name = h->root.root.string; - if (strcmp (name, "_DYNAMIC") == 0 - || strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0) - sym->st_shndx = SHN_ABS; - else if (strcmp (name, "_DYNAMIC_LINK") == 0 - || strcmp (name, "_DYNAMIC_LINKING") == 0) - { - sym->st_shndx = SHN_ABS; - sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); - sym->st_value = 1; - } - else if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS) - { - if (h->type == STT_FUNC) - sym->st_shndx = SHN_MIPS_TEXT; - else if (h->type == STT_OBJECT) - sym->st_shndx = SHN_MIPS_DATA; - } - - /* Handle the IRIX6-specific symbols. */ - - { - /* The linker script takes care of providing names and values for - these, but we must place them into the right sections. */ - static const char* const text_section_symbols[] = { - "_ftext", - "_etext", - "__dso_displacement", - "__elf_header", - "__program_header_table", - NULL - }; - - static const char* const data_section_symbols[] = { - "_fdata", - "_edata", - "_end", - "_fbss", - NULL - }; - - const char* const *p; - int i; - - for (i = 0; i < 2; ++i) - for (p = (i == 0) ? text_section_symbols : data_section_symbols; - *p; - ++p) - if (strcmp (*p, name) == 0) - { - /* All of these symbols are given type STT_SECTION by the - IRIX6 linker. */ - sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); - - /* The IRIX linker puts these symbols in special sections. */ - if (i == 0) - sym->st_shndx = SHN_MIPS_TEXT; - else - sym->st_shndx = SHN_MIPS_DATA; - - break; - } - } - - return true; -} - -/* Finish up the dynamic sections. */ - -boolean -mips_elf64_finish_dynamic_sections (output_bfd, info) - bfd *output_bfd; - struct bfd_link_info *info; -{ - bfd *dynobj; - asection *sdyn; - asection *sgot; - struct mips_elf64_got_info *g; - - dynobj = elf_hash_table (info)->dynobj; - - sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); - - sgot = bfd_get_section_by_name (dynobj, ".got"); - if (sgot == NULL) - g = NULL; - else - { - BFD_ASSERT (elf_section_data (sgot) != NULL); - g = (struct mips_elf64_got_info *) elf_section_data (sgot)->tdata; - BFD_ASSERT (g != NULL); - } - - if (elf_hash_table (info)->dynamic_sections_created) - { - bfd_byte *b; - - BFD_ASSERT (sdyn != NULL); - BFD_ASSERT (g != NULL); - - for (b = sdyn->contents; - b < sdyn->contents + sdyn->_raw_size; - b += get_elf_backend_data (dynobj)->s->sizeof_dyn) - { - Elf_Internal_Dyn dyn; - const char *name; - size_t elemsize; - asection *s; - boolean swap_out_p; - - /* Read in the current dynamic entry. */ - (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); - - /* Assume that we're going to modify it and write it out. */ - swap_out_p = true; - - switch (dyn.d_tag) - { - case DT_RELENT: - s = bfd_get_section_by_name(dynobj, "rel.dyn"); - BFD_ASSERT (s != NULL); - dyn.d_un.d_val = get_elf_backend_data (dynobj)->s->sizeof_rel; - break; - - case DT_STRSZ: - /* Rewrite DT_STRSZ. */ - dyn.d_un.d_val = - _bfd_elf_strtab_size (elf_hash_table (info)->dynstr); - break; - - case DT_PLTGOT: - name = ".got"; - goto get_vma; - case DT_MIPS_CONFLICT: - name = ".conflict"; - goto get_vma; - case DT_MIPS_LIBLIST: - name = ".liblist"; - get_vma: - s = bfd_get_section_by_name (output_bfd, name); - BFD_ASSERT (s != NULL); - dyn.d_un.d_ptr = s->vma; - break; - - case DT_MIPS_RLD_VERSION: - dyn.d_un.d_val = 1; /* XXX */ - break; - - case DT_MIPS_FLAGS: - dyn.d_un.d_val = RHF_NOTPOT; /* XXX */ - break; - - case DT_MIPS_CONFLICTNO: - name = ".conflict"; - elemsize = sizeof (Elf32_Conflict); - goto set_elemno; - - case DT_MIPS_LIBLISTNO: - name = ".liblist"; - elemsize = sizeof (Elf32_Lib); - set_elemno: - s = bfd_get_section_by_name (output_bfd, name); - if (s != NULL) - { - if (s->_cooked_size != 0) - dyn.d_un.d_val = s->_cooked_size / elemsize; - else - dyn.d_un.d_val = s->_raw_size / elemsize; - } - else - dyn.d_un.d_val = 0; - break; - - case DT_MIPS_TIME_STAMP: - time ((time_t *) &dyn.d_un.d_val); - break; - - case DT_MIPS_ICHECKSUM: - /* XXX FIXME: */ - swap_out_p = false; - break; - - case DT_MIPS_IVERSION: - /* XXX FIXME: */ - swap_out_p = false; - break; - - case DT_MIPS_BASE_ADDRESS: - s = output_bfd->sections; - BFD_ASSERT (s != NULL); - dyn.d_un.d_ptr = s->vma & ~(0xffff); - break; - - case DT_MIPS_LOCAL_GOTNO: - dyn.d_un.d_val = g->local_gotno; - break; - - case DT_MIPS_UNREFEXTNO: - /* The index into the dynamic symbol table which is the - entry of the first external symbol that is not - referenced within the same object. */ - dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1; - break; - - case DT_MIPS_GOTSYM: - if (g->global_gotsym) - { - dyn.d_un.d_val = g->global_gotsym->dynindx; - break; - } - /* In case if we don't have global got symbols we default - to setting DT_MIPS_GOTSYM to the same value as - DT_MIPS_SYMTABNO, so we just fall through. */ - - case DT_MIPS_SYMTABNO: - name = ".dynsym"; - elemsize = get_elf_backend_data (output_bfd)->s->sizeof_sym; - s = bfd_get_section_by_name (output_bfd, name); - BFD_ASSERT (s != NULL); - - if (s->_cooked_size != 0) - dyn.d_un.d_val = s->_cooked_size / elemsize; - else - dyn.d_un.d_val = s->_raw_size / elemsize; - break; - - case DT_MIPS_HIPAGENO: - dyn.d_un.d_val = g->local_gotno - MIPS_RESERVED_GOTNO; - break; - - case DT_MIPS_OPTIONS: - s = bfd_get_section_by_name(output_bfd, ".MIPS.options"); - dyn.d_un.d_ptr = s->vma; - break; - - case DT_MIPS_MSYM: - s = bfd_get_section_by_name(output_bfd, ".msym"); - dyn.d_un.d_ptr = s->vma; - break; - - default: - swap_out_p = false; - break; - } - - if (swap_out_p) - (*get_elf_backend_data (dynobj)->s->swap_dyn_out) - (dynobj, &dyn, b); - } - } - - /* The first entry of the global offset table will be filled at - runtime. The second entry will be used by some runtime loaders. - This isn't the case of Irix rld. */ - if (sgot != NULL && sgot->_raw_size > 0) - { - bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents); - bfd_put_64 (output_bfd, (bfd_vma) 0x80000000, sgot->contents + 8); - } - - if (sgot != NULL) - elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 8; - - { - asection *smsym; - asection *s; - - /* ??? The section symbols for the output sections were set up in - _bfd_elf_final_link. SGI sets the STT_NOTYPE attribute for these - symbols. Should we do so? */ - - smsym = bfd_get_section_by_name (dynobj, ".msym"); - if (smsym != NULL) - { - Elf32_Internal_Msym msym; - - msym.ms_hash_value = 0; - msym.ms_info = ELF32_MS_INFO (0, 1); - - for (s = output_bfd->sections; s != NULL; s = s->next) - { - long dynindx = elf_section_data (s)->dynindx; - - mips_elf64_swap_msym_out - (output_bfd, &msym, - (((Elf32_External_Msym *) smsym->contents) - + dynindx)); - } - } - - /* Clean up a first relocation in .rel.dyn. */ - s = bfd_get_section_by_name (dynobj, "rel.dyn"); - if (s != NULL && s->_raw_size > 0) - memset (s->contents, 0, get_elf_backend_data (dynobj)->s->sizeof_rel); - } - - return true; -} - -/* Return the section that should be marked against GC for a given - relocation. */ - -asection * -mips_elf64_gc_mark_hook (abfd, info, rel, h, sym) - bfd *abfd; - struct bfd_link_info *info ATTRIBUTE_UNUSED; - Elf_Internal_Rela *rel; - struct elf_link_hash_entry *h; - Elf_Internal_Sym *sym; -{ - if (h != NULL) - { - switch (ELF64_R_TYPE (rel->r_info)) - { - case R_MIPS_GNU_VTINHERIT: - case R_MIPS_GNU_VTENTRY: - break; - - default: - switch (h->root.type) - { - case bfd_link_hash_defined: - case bfd_link_hash_defweak: - return h->root.u.def.section; - - case bfd_link_hash_common: - return h->root.u.c.p->section; - - default: - break; - } - } - } - else - { - return bfd_section_from_elf_index (abfd, sym->st_shndx); - } - - return NULL; -} - -/* Update the got entry reference counts for the section being removed. */ - -boolean -mips_elf64_gc_sweep_hook (abfd, info, sec, relocs) - bfd *abfd ATTRIBUTE_UNUSED; - struct bfd_link_info *info ATTRIBUTE_UNUSED; - asection *sec ATTRIBUTE_UNUSED; - const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED; -{ -#if 0 - Elf_Internal_Shdr *symtab_hdr; - struct elf_link_hash_entry **sym_hashes; - bfd_signed_vma *local_got_refcounts; - const Elf_Internal_Rela *rel, *relend; - unsigned long r_symndx; - struct elf_link_hash_entry *h; - - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (abfd); - local_got_refcounts = elf_local_got_refcounts (abfd); - - relend = relocs + sec->reloc_count; - for (rel = relocs; rel < relend; rel++) - switch (ELF64_R_TYPE (rel->r_info)) - { - case R_MIPS_GOT16: - case R_MIPS_CALL16: - case R_MIPS_CALL_HI16: - case R_MIPS_CALL_LO16: - case R_MIPS_GOT_HI16: - case R_MIPS_GOT_LO16: - /* ??? It would seem that the existing MIPS code does no sort - of reference counting or whatnot on its GOT and PLT entries, - so it is not possible to garbage collect them at this time. */ - break; - - default: - break; - } -#endif - - return true; -} - -/* Create the .got section to hold the global offset table. */ - -static boolean -mips_elf64_create_got_section (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - flagword flags; - register asection *s; - struct elf_link_hash_entry *h; - struct mips_elf64_got_info *g; - - /* This function may be called more than once. */ - if (bfd_get_section_by_name (abfd, ".got")) - return true; - - flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY - | SEC_LINKER_CREATED); - - s = bfd_make_section (abfd, ".got"); - if (s == NULL - || ! bfd_set_section_flags (abfd, s, flags) - || ! bfd_set_section_alignment (abfd, s, 4)) - return false; - - /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the - linker script because we don't want to define the symbol if we - are not creating a global offset table. */ - h = NULL; - if (! (_bfd_generic_link_add_one_symbol - (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, - (bfd_vma) 0, (const char *) NULL, false, - get_elf_backend_data (abfd)->collect, - (struct bfd_link_hash_entry **) &h))) - return false; - h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; - h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; - h->type = STT_OBJECT; - - if (info->shared - && ! bfd_elf64_link_record_dynamic_symbol (info, h)) - return false; - - /* The first several global offset table entries are reserved. */ - s->_raw_size = MIPS_RESERVED_GOTNO * (get_elf_backend_data (abfd)->s->arch_size / 8); - - g = (struct mips_elf64_got_info *) bfd_alloc (abfd, - sizeof (struct mips_elf64_got_info)); - if (g == NULL) - return false; - g->global_gotsym = NULL; - g->local_gotno = MIPS_RESERVED_GOTNO; - g->assigned_gotno = MIPS_RESERVED_GOTNO; - if (elf_section_data (s) == NULL) - { - s->used_by_bfd = - (PTR) bfd_zalloc (abfd, sizeof (struct bfd_elf_section_data)); - if (elf_section_data (s) == NULL) - return false; - } - elf_section_data (s)->tdata = (PTR) g; - elf_section_data (s)->this_hdr.sh_flags - |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; - - return true; -} - -/* If H is a symbol that needs a global GOT entry, but has a dynamic - symbol table index lower than any we've seen to date, record it for - posterity. */ - -static boolean -mips_elf64_record_global_got_symbol (h, info, g) - struct elf_link_hash_entry *h; - struct bfd_link_info *info; - struct mips_elf64_got_info *g ATTRIBUTE_UNUSED; -{ - /* A global symbol in the GOT must also be in the dynamic symbol - table. */ - if (h->dynindx == -1 - && !bfd_elf64_link_record_dynamic_symbol (info, h)) - return false; - - /* If we've already marked this entry as needing GOT space, we don't - need to do it again. */ - if (h->got.offset != (bfd_vma) - 1) - return true; - - /* By setting this to a value other than -1, we are indicating that - there needs to be a GOT entry for H. Avoid using zero, as the - generic ELF copy_indirect_symbol tests for <= 0. */ - h->got.offset = 1; - - return true; -} - -/* Returns the .msym section for ABFD, creating it if it does not - already exist. Returns NULL to indicate error. */ - -static asection * -mips_elf64_create_msym_section (abfd) - bfd *abfd; -{ - asection *s; - - s = bfd_get_section_by_name (abfd, ".msym"); - if (!s) - { - s = bfd_make_section (abfd, ".msym"); - if (!s - || !bfd_set_section_flags (abfd, s, - SEC_ALLOC - | SEC_LOAD - | SEC_HAS_CONTENTS - | SEC_LINKER_CREATED - | SEC_READONLY) - || !bfd_set_section_alignment (abfd, s, 3)) - return NULL; - } - - return s; -} - -/* Add room for N relocations to the .rel.dyn section in ABFD. */ - -static void -mips_elf64_allocate_dynamic_relocations (abfd, n) - bfd *abfd; - unsigned int n; -{ - asection *s; - - s = bfd_get_section_by_name (abfd, ".rel.dyn"); - BFD_ASSERT (s != NULL); - - if (s->_raw_size == 0) - { - /* Make room for a null element. */ - s->_raw_size += get_elf_backend_data (abfd)->s->sizeof_rel; - ++s->reloc_count; - } - s->_raw_size += n * get_elf_backend_data (abfd)->s->sizeof_rel; -} - -/* Look through the relocs for a section during the first phase, and - allocate space in the global offset table. */ - -boolean -mips_elf64_check_relocs (abfd, info, sec, relocs) - bfd *abfd; - struct bfd_link_info *info; - asection *sec; - const Elf_Internal_Rela *relocs; -{ - const char *name; - bfd *dynobj; - Elf_Internal_Shdr *symtab_hdr; - struct elf_link_hash_entry **sym_hashes; - struct mips_elf64_got_info *g; - size_t extsymoff; - const Elf_Internal_Rela *rel; - const Elf_Internal_Rela *rel_end; - asection *sgot; - asection *sreloc; - struct elf_backend_data *bed; - - if (info->relocateable) - return true; - - dynobj = elf_hash_table (info)->dynobj; - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (abfd); - extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; - - /* Check for the mips16 stub sections. */ - - name = bfd_get_section_name (abfd, sec); - if (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0) - { - unsigned long r_symndx; - - /* Look at the relocation information to figure out which symbol - this is for. */ - - r_symndx = ELF64_R_SYM (relocs->r_info); - - if (r_symndx < extsymoff - || sym_hashes[r_symndx - extsymoff] == NULL) - { - asection *o; - - /* This stub is for a local symbol. This stub will only be - needed if there is some relocation in this BFD, other - than a 16 bit function call, which refers to this symbol. */ - for (o = abfd->sections; o != NULL; o = o->next) - { - Elf_Internal_Rela *sec_relocs; - const Elf_Internal_Rela *r, *rend; - - /* We can ignore stub sections when looking for relocs. */ - if ((o->flags & SEC_RELOC) == 0 - || o->reloc_count == 0 - || strncmp (bfd_get_section_name (abfd, o), FN_STUB, - sizeof FN_STUB - 1) == 0 - || strncmp (bfd_get_section_name (abfd, o), CALL_STUB, - sizeof CALL_STUB - 1) == 0 - || strncmp (bfd_get_section_name (abfd, o), CALL_FP_STUB, - sizeof CALL_FP_STUB - 1) == 0) - continue; - - sec_relocs = (_bfd_elf64_link_read_relocs - (abfd, o, (PTR) NULL, - (Elf_Internal_Rela *) NULL, - info->keep_memory)); - if (sec_relocs == NULL) - return false; - - rend = sec_relocs + o->reloc_count; - for (r = sec_relocs; r < rend; r++) - if (ELF64_R_SYM (r->r_info) == r_symndx - && ELF64_R_TYPE (r->r_info) != R_MIPS16_26) - break; - - if (! info->keep_memory) - free (sec_relocs); - - if (r < rend) - break; - } - - if (o == NULL) - { - /* There is no non-call reloc for this stub, so we do - not need it. Since this function is called before - the linker maps input sections to output sections, we - can easily discard it by setting the SEC_EXCLUDE - flag. */ - sec->flags |= SEC_EXCLUDE; - return true; - } - - /* Record this stub in an array of local symbol stubs for - this BFD. */ - if (elf_tdata (abfd)->local_stubs == NULL) - { - unsigned long symcount; - asection **n; - bfd_size_type amt; - - if (elf_bad_symtab (abfd)) - symcount = NUM_SHDR_ENTRIES (symtab_hdr); - else - symcount = symtab_hdr->sh_info; - amt = symcount * sizeof (asection *); - n = (asection **) bfd_zalloc (abfd, amt); - if (n == NULL) - return false; - elf_tdata (abfd)->local_stubs = n; - } - - elf_tdata (abfd)->local_stubs[r_symndx] = sec; - - /* We don't need to set mips16_stubs_seen in this case. - That flag is used to see whether we need to look through - the global symbol table for stubs. We don't need to set - it here, because we just have a local stub. */ - } - else - { - struct mips_elf64_link_hash_entry *h; - - h = ((struct mips_elf64_link_hash_entry *) - sym_hashes[r_symndx - extsymoff]); - - /* H is the symbol this stub is for. */ - - h->fn_stub = sec; - mips_elf64_hash_table (info)->mips16_stubs_seen = true; - } - } - else if (strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0 - || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0) - { - unsigned long r_symndx; - struct mips_elf64_link_hash_entry *h; - asection **loc; - - /* Look at the relocation information to figure out which symbol - this is for. */ - - r_symndx = ELF64_R_SYM (relocs->r_info); - - if (r_symndx < extsymoff - || sym_hashes[r_symndx - extsymoff] == NULL) - { - /* This stub was actually built for a static symbol defined - in the same file. We assume that all static symbols in - mips16 code are themselves mips16, so we can simply - discard this stub. Since this function is called before - the linker maps input sections to output sections, we can - easily discard it by setting the SEC_EXCLUDE flag. */ - sec->flags |= SEC_EXCLUDE; - return true; - } - - h = ((struct mips_elf64_link_hash_entry *) - sym_hashes[r_symndx - extsymoff]); - - /* H is the symbol this stub is for. */ - - if (strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0) - loc = &h->call_fp_stub; - else - loc = &h->call_stub; - - /* If we already have an appropriate stub for this function, we - don't need another one, so we can discard this one. Since - this function is called before the linker maps input sections - to output sections, we can easily discard it by setting the - SEC_EXCLUDE flag. We can also discard this section if we - happen to already know that this is a mips16 function; it is - not necessary to check this here, as it is checked later, but - it is slightly faster to check now. */ - if (*loc != NULL || h->root.other == STO_MIPS16) - { - sec->flags |= SEC_EXCLUDE; - return true; - } - - *loc = sec; - mips_elf64_hash_table (info)->mips16_stubs_seen = true; - } - - if (dynobj == NULL) - { - sgot = NULL; - g = NULL; - } - else - { - sgot = bfd_get_section_by_name (dynobj, ".got"); - if (sgot == NULL) - g = NULL; - else - { - BFD_ASSERT (elf_section_data (sgot) != NULL); - g = (struct mips_elf64_got_info *) elf_section_data (sgot)->tdata; - BFD_ASSERT (g != NULL); - } - } - - sreloc = NULL; - bed = get_elf_backend_data (abfd); - rel_end = relocs + sec->reloc_count * bed->s->int_rels_per_ext_rel; - for (rel = relocs; rel < rel_end; ++rel) - { - unsigned long r_symndx; - int r_type; - struct elf_link_hash_entry *h; - - r_symndx = ELF64_R_SYM (rel->r_info); - r_type = ELF64_MIPS_R_TYPE (rel->r_info); - - if (r_symndx < extsymoff) - h = NULL; - else if (r_symndx >= extsymoff + NUM_SHDR_ENTRIES (symtab_hdr)) - { - (*_bfd_error_handler) - (_("%s: Malformed reloc detected for section %s"), - bfd_archive_filename (abfd), name); - bfd_set_error (bfd_error_bad_value); - return false; - } - else - { - h = sym_hashes[r_symndx - extsymoff]; - - /* This may be an indirect symbol created because of a version. */ - if (h != NULL) - { - while (h->root.type == bfd_link_hash_indirect) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - } - } - - /* Some relocs require a global offset table. */ - if (dynobj == NULL || sgot == NULL) - { - switch (r_type) - { - case R_MIPS_GOT16: - case R_MIPS_CALL16: - case R_MIPS_CALL_HI16: - case R_MIPS_CALL_LO16: - case R_MIPS_GOT_HI16: - case R_MIPS_GOT_LO16: - case R_MIPS_GOT_PAGE: - case R_MIPS_GOT_OFST: - case R_MIPS_GOT_DISP: - if (dynobj == NULL) - elf_hash_table (info)->dynobj = dynobj = abfd; - if (! mips_elf64_create_got_section (dynobj, info)) - return false; - g = _mips_elf64_got_info (dynobj, &sgot); - break; - - case R_MIPS_32: - case R_MIPS_REL32: - case R_MIPS_64: - if (dynobj == NULL - && (info->shared || h != NULL) - && (sec->flags & SEC_ALLOC) != 0) - elf_hash_table (info)->dynobj = dynobj = abfd; - break; - - default: - break; - } - } - - if (!h && (r_type == R_MIPS_CALL_LO16 - || r_type == R_MIPS_GOT_LO16 - || r_type == R_MIPS_GOT_DISP)) - { - /* We may need a local GOT entry for this relocation. We - don't count R_MIPS_GOT_PAGE because we can estimate the - maximum number of pages needed by looking at the size of - the segment. Similar comments apply to R_MIPS_GOT16 and - R_MIPS_CALL16. We don't count R_MIPS_GOT_HI16, or - R_MIPS_CALL_HI16 because these are always followed by an - R_MIPS_GOT_LO16 or R_MIPS_CALL_LO16. - - This estimation is very conservative since we can merge - duplicate entries in the GOT. In order to be less - conservative, we could actually build the GOT here, - rather than in relocate_section. */ - g->local_gotno++; - sgot->_raw_size += get_elf_backend_data (dynobj)->s->arch_size / 8; - } - - switch (r_type) - { - case R_MIPS_CALL16: - if (h == NULL) - { - (*_bfd_error_handler) - (_("%s: CALL16 reloc at 0x%lx not against global symbol"), - bfd_archive_filename (abfd), (unsigned long) rel->r_offset); - bfd_set_error (bfd_error_bad_value); - return false; - } - /* Fall through. */ - - case R_MIPS_CALL_HI16: - case R_MIPS_CALL_LO16: - if (h != NULL) - { - /* This symbol requires a global offset table entry. */ - if (!mips_elf64_record_global_got_symbol (h, info, g)) - return false; - - /* We need a stub, not a plt entry for the undefined - function. But we record it as if it needs plt. See - elf_adjust_dynamic_symbol in elflink.h. */ - h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; - h->type = STT_FUNC; - } - break; - - case R_MIPS_GOT16: - case R_MIPS_GOT_HI16: - case R_MIPS_GOT_LO16: - case R_MIPS_GOT_DISP: - /* This symbol requires a global offset table entry. */ - if (h && !mips_elf64_record_global_got_symbol (h, info, g)) - return false; - break; - - case R_MIPS_32: - case R_MIPS_REL32: - case R_MIPS_64: - if ((info->shared || h != NULL) - && (sec->flags & SEC_ALLOC) != 0) - { - if (sreloc == NULL) - { - const char *name = ".rel.dyn"; - - sreloc = bfd_get_section_by_name (dynobj, name); - if (sreloc == NULL) - { - sreloc = bfd_make_section (dynobj, name); - if (sreloc == NULL - || ! bfd_set_section_flags (dynobj, sreloc, - (SEC_ALLOC - | SEC_LOAD - | SEC_HAS_CONTENTS - | SEC_IN_MEMORY - | SEC_LINKER_CREATED - | SEC_READONLY)) - || ! bfd_set_section_alignment (dynobj, sreloc, - 4)) - return false; - } - } -#define MIPS_READONLY_SECTION (SEC_ALLOC | SEC_LOAD | SEC_READONLY) - if (info->shared) - { - /* When creating a shared object, we must copy these - reloc types into the output file as R_MIPS_REL32 - relocs. We make room for this reloc in the - .rel.dyn reloc section. */ - mips_elf64_allocate_dynamic_relocations (dynobj, 1); - if ((sec->flags & MIPS_READONLY_SECTION) - == MIPS_READONLY_SECTION) - /* We tell the dynamic linker that there are - relocations against the text segment. */ - info->flags |= DF_TEXTREL; - } - else - { - struct mips_elf64_link_hash_entry *hmips; - - /* We only need to copy this reloc if the symbol is - defined in a dynamic object. */ - hmips = (struct mips_elf64_link_hash_entry *) h; - ++hmips->possibly_dynamic_relocs; - if ((sec->flags & MIPS_READONLY_SECTION) - == MIPS_READONLY_SECTION) - /* We need it to tell the dynamic linker if there - are relocations against the text segment. */ - hmips->readonly_reloc = true; - } - - /* Even though we don't directly need a GOT entry for - this symbol, a symbol must have a dynamic symbol - table index greater that DT_MIPS_GOTSYM if there are - dynamic relocations against it. */ - if (h != NULL - && !mips_elf64_record_global_got_symbol (h, info, g)) - return false; - } - break; - - case R_MIPS_26: - case R_MIPS_GPREL16: - case R_MIPS_LITERAL: - case R_MIPS_GPREL32: - break; - - /* This relocation describes the C++ object vtable hierarchy. - Reconstruct it for later use during GC. */ - case R_MIPS_GNU_VTINHERIT: - if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) - return false; - break; - - /* This relocation describes which C++ vtable entries are actually - used. Record for later use during GC. */ - case R_MIPS_GNU_VTENTRY: - if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_offset)) - return false; - break; - - default: - break; - } - } - - return true; -} - -/* Structure used to pass information to mips_elf64_output_extsym. */ - -struct extsym_info -{ - bfd *abfd; - struct bfd_link_info *info; - struct ecoff_debug_info *debug; - const struct ecoff_debug_swap *swap; - boolean failed; -}; - -/* This routine is used to write out ECOFF debugging external symbol - information. It is called via mips_elf64_link_hash_traverse. The - ECOFF external symbol information must match the ELF external - symbol information. Unfortunately, at this point we don't know - whether a symbol is required by reloc information, so the two - tables may wind up being different. We must sort out the external - symbol information before we can set the final size of the .mdebug - section, and we must set the size of the .mdebug section before we - can relocate any sections, and we can't know which symbols are - required by relocation until we relocate the sections. - Fortunately, it is relatively unlikely that any symbol will be - stripped but required by a reloc. In particular, it can not happen - when generating a final executable. */ - -static boolean -mips_elf64_output_extsym (h, data) - struct mips_elf64_link_hash_entry *h; - PTR data; -{ - struct extsym_info *einfo = (struct extsym_info *) data; - boolean strip; - asection *sec, *output_section; - - if (h->root.root.type == bfd_link_hash_warning) - h = (struct mips_elf64_link_hash_entry *) h->root.root.u.i.link; - - if (h->root.indx == -2) - strip = false; - else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 - || (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0) - && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 - && (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0) - strip = true; - else if (einfo->info->strip == strip_all - || (einfo->info->strip == strip_some - && bfd_hash_lookup (einfo->info->keep_hash, - h->root.root.root.string, - false, false) == NULL)) - strip = true; - else - strip = false; - - if (strip) - return true; - - if (h->esym.ifd == -2) - { - h->esym.jmptbl = 0; - h->esym.cobol_main = 0; - h->esym.weakext = 0; - h->esym.reserved = 0; - h->esym.ifd = ifdNil; - h->esym.asym.value = 0; - h->esym.asym.st = stGlobal; - - if (h->root.root.type == bfd_link_hash_undefined - || h->root.root.type == bfd_link_hash_undefweak) - { - const char *name; - - /* Use undefined class. Also, set class and type for some - special symbols. */ - name = h->root.root.root.string; - h->esym.asym.sc = scUndefined; - } - else if (h->root.root.type != bfd_link_hash_defined - && h->root.root.type != bfd_link_hash_defweak) - h->esym.asym.sc = scAbs; - else - { - const char *name; - - sec = h->root.root.u.def.section; - output_section = sec->output_section; - - /* When making a shared library and symbol h is the one from - the another shared library, OUTPUT_SECTION may be null. */ - if (output_section == NULL) - h->esym.asym.sc = scUndefined; - else - { - name = bfd_section_name (output_section->owner, output_section); - - if (strcmp (name, ".text") == 0) - h->esym.asym.sc = scText; - else if (strcmp (name, ".data") == 0) - h->esym.asym.sc = scData; - else if (strcmp (name, ".sdata") == 0) - h->esym.asym.sc = scSData; - else if (strcmp (name, ".rodata") == 0 - || strcmp (name, ".rdata") == 0) - h->esym.asym.sc = scRData; - else if (strcmp (name, ".bss") == 0) - h->esym.asym.sc = scBss; - else if (strcmp (name, ".sbss") == 0) - h->esym.asym.sc = scSBss; - else if (strcmp (name, ".init") == 0) - h->esym.asym.sc = scInit; - else if (strcmp (name, ".fini") == 0) - h->esym.asym.sc = scFini; - else - h->esym.asym.sc = scAbs; - } - } - - h->esym.asym.reserved = 0; - h->esym.asym.index = indexNil; - } - - if (h->root.root.type == bfd_link_hash_common) - h->esym.asym.value = h->root.root.u.c.size; - else if (h->root.root.type == bfd_link_hash_defined - || h->root.root.type == bfd_link_hash_defweak) - { - if (h->esym.asym.sc == scCommon) - h->esym.asym.sc = scBss; - else if (h->esym.asym.sc == scSCommon) - h->esym.asym.sc = scSBss; - - sec = h->root.root.u.def.section; - output_section = sec->output_section; - if (output_section != NULL) - h->esym.asym.value = (h->root.root.u.def.value - + sec->output_offset - + output_section->vma); - else - h->esym.asym.value = 0; - } - else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) - { - struct mips_elf64_link_hash_entry *hd = h; - boolean no_fn_stub = h->no_fn_stub; - - while (hd->root.root.type == bfd_link_hash_indirect) - { - hd = (struct mips_elf64_link_hash_entry *)h->root.root.u.i.link; - no_fn_stub = no_fn_stub || hd->no_fn_stub; - } - - if (!no_fn_stub) - { - /* Set type and value for a symbol with a function stub. */ - h->esym.asym.st = stProc; - sec = hd->root.root.u.def.section; - if (sec == NULL) - h->esym.asym.value = 0; - else - { - output_section = sec->output_section; - if (output_section != NULL) - h->esym.asym.value = (hd->root.plt.offset - + sec->output_offset - + output_section->vma); - else - h->esym.asym.value = 0; - } -#if 0 /* FIXME? */ - h->esym.ifd = 0; -#endif - } - } - - if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, - h->root.root.root.string, - &h->esym)) - { - einfo->failed = true; - return false; - } - - return true; -} - -/* Swap an entry in a .gptab section. Note that these routines rely - on the equivalence of the two elements of the union. */ - -static void -mips_elf64_swap_gptab_in (abfd, ex, in) - bfd *abfd; - const Elf32_External_gptab *ex; - Elf32_gptab *in; -{ - in->gt_entry.gt_g_value = H_GET_32 (abfd, ex->gt_entry.gt_g_value); - in->gt_entry.gt_bytes = H_GET_32 (abfd, ex->gt_entry.gt_bytes); -} - -static void -mips_elf64_swap_gptab_out (abfd, in, ex) - bfd *abfd; - const Elf32_gptab *in; - Elf32_External_gptab *ex; -{ - H_PUT_32 (abfd, (bfd_vma) in->gt_entry.gt_g_value, - ex->gt_entry.gt_g_value); - H_PUT_32 (abfd, (bfd_vma) in->gt_entry.gt_bytes, - ex->gt_entry.gt_bytes); -} - -/* A comparison routine used to sort .gptab entries. */ - -static int -gptab_compare (p1, p2) - const PTR p1; - const PTR p2; -{ - const Elf32_gptab *a1 = (const Elf32_gptab *) p1; - const Elf32_gptab *a2 = (const Elf32_gptab *) p2; - - return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value; -} - -/* We need to use a special link routine to handle the .mdebug section. - We need to merge all instances of this section together, not write - them all out sequentially. */ - -boolean -mips_elf64_final_link (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - asection **secpp; - asection *o; - struct bfd_link_order *p; - asection *mdebug_sec, *gptab_data_sec, *gptab_bss_sec; - struct ecoff_debug_info debug; - const struct ecoff_debug_swap *swap - = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; - HDRR *symhdr = &debug.symbolic_header; - PTR mdebug_handle = NULL; - asection *s; - EXTR esym; - unsigned int i; - static const char * const secname[] = - { ".text", ".init", ".fini", ".data", - ".rodata", ".sdata", ".sbss", ".bss" }; - static const int sc[] = { scText, scInit, scFini, scData, - scRData, scSData, scSBss, scBss }; - - /* If all the things we linked together were PIC, but we're - producing an executable (rather than a shared object), then the - resulting file is CPIC (i.e., it calls PIC code.) */ - if (!info->shared - && !info->relocateable - && elf_elfheader (abfd)->e_flags & EF_MIPS_PIC) - { - elf_elfheader (abfd)->e_flags &= ~EF_MIPS_PIC; - elf_elfheader (abfd)->e_flags |= EF_MIPS_CPIC; - } - - /* We'd carefully arranged the dynamic symbol indices, and then the - generic size_dynamic_sections renumbered them out from under us. - Rather than trying somehow to prevent the renumbering, just do - the sort again. */ - if (elf_hash_table (info)->dynamic_sections_created) - { - bfd *dynobj; - asection *got; - struct mips_elf64_got_info *g; - - /* When we resort, we must tell mips_elf64_sort_hash_table what - the lowest index it may use is. That's the number of section - symbols we're going to add. The generic ELF linker only - adds these symbols when building a shared object. Note that - we count the sections after (possibly) removing the .options - section above. */ - if (!mips_elf64_sort_hash_table (info, (info->shared - ? bfd_count_sections (abfd) + 1 - : 1))) - return false; - - /* Make sure we didn't grow the global .got region. */ - dynobj = elf_hash_table (info)->dynobj; - got = bfd_get_section_by_name (dynobj, ".got"); - g = (struct mips_elf64_got_info *) elf_section_data (got)->tdata; - - if (g->global_gotsym != NULL) - BFD_ASSERT ((elf_hash_table (info)->dynsymcount - - g->global_gotsym->dynindx) - <= g->global_gotno); - } - - /* We include .MIPS.options, even though we don't process it quite right. - (Some entries are supposed to be merged.) At IRIX6 empirically we seem - to be better off including it than not. */ - for (secpp = &abfd->sections; *secpp != NULL; secpp = &(*secpp)->next) - { - if (strcmp ((*secpp)->name, ".MIPS.options") == 0) - { - for (p = (*secpp)->link_order_head; p != NULL; p = p->next) - if (p->type == bfd_indirect_link_order) - p->u.indirect.section->flags &=~ SEC_HAS_CONTENTS; - (*secpp)->link_order_head = NULL; - bfd_section_list_remove (abfd, secpp); - --abfd->section_count; - - break; - } - } - - /* Get a value for the GP register. */ - if (elf_gp (abfd) == 0) - { - struct bfd_link_hash_entry *h; - - h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true); - if (h != (struct bfd_link_hash_entry *) NULL - && h->type == bfd_link_hash_defined) - elf_gp (abfd) = (h->u.def.value - + h->u.def.section->output_section->vma - + h->u.def.section->output_offset); - else if (info->relocateable) - { - bfd_vma lo = MINUS_ONE; - - /* Find the GP-relative section with the lowest offset. */ - for (o = abfd->sections; o != NULL; o = o->next) - if (o->vma < lo - && (elf_section_data (o)->this_hdr.sh_flags & SHF_MIPS_GPREL)) - lo = o->vma; - - /* And calculate GP relative to that. */ - elf_gp (abfd) = (lo + 0x7ff0); - } - else - { - /* If the relocate_section function needs to do a reloc - involving the GP value, it should make a reloc_dangerous - callback to warn that GP is not defined. */ - } - } - - /* Go through the sections and collect the .mdebug information. */ - mdebug_sec = NULL; - gptab_data_sec = NULL; - gptab_bss_sec = NULL; - for (o = abfd->sections; o != (asection *) NULL; o = o->next) - { - if (strcmp (o->name, ".mdebug") == 0) - { - struct extsym_info einfo; - bfd_vma last; - - /* We have found the .mdebug section in the output file. - Look through all the link_orders comprising it and merge - the information together. */ - symhdr->magic = swap->sym_magic; - /* FIXME: What should the version stamp be? */ - symhdr->vstamp = 0; - symhdr->ilineMax = 0; - symhdr->cbLine = 0; - symhdr->idnMax = 0; - symhdr->ipdMax = 0; - symhdr->isymMax = 0; - symhdr->ioptMax = 0; - symhdr->iauxMax = 0; - symhdr->issMax = 0; - symhdr->issExtMax = 0; - symhdr->ifdMax = 0; - symhdr->crfd = 0; - symhdr->iextMax = 0; - - /* We accumulate the debugging information itself in the - debug_info structure. */ - debug.line = NULL; - debug.external_dnr = NULL; - debug.external_pdr = NULL; - debug.external_sym = NULL; - debug.external_opt = NULL; - debug.external_aux = NULL; - debug.ss = NULL; - debug.ssext = debug.ssext_end = NULL; - debug.external_fdr = NULL; - debug.external_rfd = NULL; - debug.external_ext = debug.external_ext_end = NULL; - - mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); - if (mdebug_handle == (PTR) NULL) - return false; - - esym.jmptbl = 0; - esym.cobol_main = 0; - esym.weakext = 0; - esym.reserved = 0; - esym.ifd = ifdNil; - esym.asym.iss = issNil; - esym.asym.st = stLocal; - esym.asym.reserved = 0; - esym.asym.index = indexNil; - last = 0; - for (i = 0; i < sizeof (secname) / sizeof (secname[0]); i++) - { - esym.asym.sc = sc[i]; - s = bfd_get_section_by_name (abfd, secname[i]); - if (s != NULL) - { - esym.asym.value = s->vma; - last = s->vma + s->_raw_size; - } - else - esym.asym.value = last; - if (!bfd_ecoff_debug_one_external (abfd, &debug, swap, - secname[i], &esym)) - return false; - } - - for (p = o->link_order_head; - p != (struct bfd_link_order *) NULL; - p = p->next) - { - asection *input_section; - bfd *input_bfd; - const struct ecoff_debug_swap *input_swap; - struct ecoff_debug_info input_debug; - char *eraw_src; - char *eraw_end; - - if (p->type != bfd_indirect_link_order) - { - if (p->type == bfd_data_link_order) - continue; - abort (); - } - - input_section = p->u.indirect.section; - input_bfd = input_section->owner; - - if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour - || (get_elf_backend_data (input_bfd) - ->elf_backend_ecoff_debug_swap) == NULL) - { - /* I don't know what a non MIPS ELF bfd would be - doing with a .mdebug section, but I don't really - want to deal with it. */ - continue; - } - - input_swap = (get_elf_backend_data (input_bfd) - ->elf_backend_ecoff_debug_swap); - - BFD_ASSERT (p->size == input_section->_raw_size); - - /* The ECOFF linking code expects that we have already - read in the debugging information and set up an - ecoff_debug_info structure, so we do that now. */ - if (! _bfd_mips_elf_read_ecoff_info (input_bfd, input_section, - &input_debug)) - return false; - - if (! (bfd_ecoff_debug_accumulate - (mdebug_handle, abfd, &debug, swap, input_bfd, - &input_debug, input_swap, info))) - return false; - - /* Loop through the external symbols. For each one with - interesting information, try to find the symbol in - the linker global hash table and save the information - for the output external symbols. */ - eraw_src = input_debug.external_ext; - eraw_end = (eraw_src - + (input_debug.symbolic_header.iextMax - * input_swap->external_ext_size)); - for (; - eraw_src < eraw_end; - eraw_src += input_swap->external_ext_size) - { - EXTR ext; - const char *name; - struct mips_elf64_link_hash_entry *h; - - (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext); - if (ext.asym.sc == scNil - || ext.asym.sc == scUndefined - || ext.asym.sc == scSUndefined) - continue; - - name = input_debug.ssext + ext.asym.iss; - h = mips_elf64_link_hash_lookup (mips_elf64_hash_table (info), - name, false, false, true); - if (h == NULL || h->esym.ifd != -2) - continue; - - if (ext.ifd != -1) - { - BFD_ASSERT (ext.ifd - < input_debug.symbolic_header.ifdMax); - ext.ifd = input_debug.ifdmap[ext.ifd]; - } - - h->esym = ext; - } - - /* Free up the information we just read. */ - free (input_debug.line); - free (input_debug.external_dnr); - free (input_debug.external_pdr); - free (input_debug.external_sym); - free (input_debug.external_opt); - free (input_debug.external_aux); - free (input_debug.ss); - free (input_debug.ssext); - free (input_debug.external_fdr); - free (input_debug.external_rfd); - free (input_debug.external_ext); - - /* Hack: reset the SEC_HAS_CONTENTS flag so that - elf_link_input_bfd ignores this section. */ - input_section->flags &=~ SEC_HAS_CONTENTS; - } - - /* Build the external symbol information. */ - einfo.abfd = abfd; - einfo.info = info; - einfo.debug = &debug; - einfo.swap = swap; - einfo.failed = false; - mips_elf64_link_hash_traverse (mips_elf64_hash_table (info), - mips_elf64_output_extsym, - (PTR) &einfo); - if (einfo.failed) - return false; - - /* Set the size of the .mdebug section. */ - o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap); - - /* Skip this section later on (I don't think this currently - matters, but someday it might). */ - o->link_order_head = (struct bfd_link_order *) NULL; - - mdebug_sec = o; - } - - if (strncmp (o->name, ".gptab.", sizeof ".gptab." - 1) == 0) - { - const char *subname; - unsigned int c; - Elf32_gptab *tab; - Elf32_External_gptab *ext_tab; - unsigned int i; - - /* The .gptab.sdata and .gptab.sbss sections hold - information describing how the small data area would - change depending upon the -G switch. These sections - not used in executables files. */ - if (! info->relocateable) - { - asection **secpp; - - for (p = o->link_order_head; - p != (struct bfd_link_order *) NULL; - p = p->next) - { - asection *input_section; - - if (p->type != bfd_indirect_link_order) - { - if (p->type == bfd_data_link_order) - continue; - abort (); - } - - input_section = p->u.indirect.section; - - /* Hack: reset the SEC_HAS_CONTENTS flag so that - elf_link_input_bfd ignores this section. */ - input_section->flags &=~ SEC_HAS_CONTENTS; - } - - /* Skip this section later on (I don't think this - currently matters, but someday it might). */ - o->link_order_head = (struct bfd_link_order *) NULL; - - /* Really remove the section. */ - for (secpp = &abfd->sections; - *secpp != o; - secpp = &(*secpp)->next) - ; - bfd_section_list_remove (abfd, secpp); - --abfd->section_count; - - continue; - } - - /* There is one gptab for initialized data, and one for - uninitialized data. */ - if (strcmp (o->name, ".gptab.sdata") == 0) - gptab_data_sec = o; - else if (strcmp (o->name, ".gptab.sbss") == 0) - gptab_bss_sec = o; - else - { - (*_bfd_error_handler) - (_("%s: illegal section name `%s'"), - bfd_archive_filename (abfd), o->name); - bfd_set_error (bfd_error_nonrepresentable_section); - return false; - } - - /* The linker script always combines .gptab.data and - .gptab.sdata into .gptab.sdata, and likewise for - .gptab.bss and .gptab.sbss. It is possible that there is - no .sdata or .sbss section in the output file, in which - case we must change the name of the output section. */ - subname = o->name + sizeof ".gptab" - 1; - if (bfd_get_section_by_name (abfd, subname) == NULL) - { - if (o == gptab_data_sec) - o->name = ".gptab.data"; - else - o->name = ".gptab.bss"; - subname = o->name + sizeof ".gptab" - 1; - BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL); - } - - /* Set up the first entry. */ - c = 1; - tab = (Elf32_gptab *) bfd_malloc (c * sizeof (Elf32_gptab)); - if (tab == NULL) - return false; - tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd); - tab[0].gt_header.gt_unused = 0; - - /* Combine the input sections. */ - for (p = o->link_order_head; - p != (struct bfd_link_order *) NULL; - p = p->next) - { - asection *input_section; - bfd *input_bfd; - bfd_size_type size; - unsigned long last; - bfd_size_type gpentry; - - if (p->type != bfd_indirect_link_order) - { - if (p->type == bfd_data_link_order) - continue; - abort (); - } - - input_section = p->u.indirect.section; - input_bfd = input_section->owner; - - /* Combine the gptab entries for this input section one - by one. We know that the input gptab entries are - sorted by ascending -G value. */ - size = bfd_section_size (input_bfd, input_section); - last = 0; - for (gpentry = sizeof (Elf32_External_gptab); - gpentry < size; - gpentry += sizeof (Elf32_External_gptab)) - { - Elf32_External_gptab ext_gptab; - Elf32_gptab int_gptab; - unsigned long val; - unsigned long add; - boolean exact; - unsigned int look; - - if (! (bfd_get_section_contents - (input_bfd, input_section, (PTR) &ext_gptab, - gpentry, sizeof (Elf32_External_gptab)))) - { - free (tab); - return false; - } - - mips_elf64_swap_gptab_in (input_bfd, &ext_gptab, - &int_gptab); - val = int_gptab.gt_entry.gt_g_value; - add = int_gptab.gt_entry.gt_bytes - last; - - exact = false; - for (look = 1; look < c; look++) - { - if (tab[look].gt_entry.gt_g_value >= val) - tab[look].gt_entry.gt_bytes += add; - - if (tab[look].gt_entry.gt_g_value == val) - exact = true; - } - - if (! exact) - { - Elf32_gptab *new_tab; - unsigned int max; - - /* We need a new table entry. */ - new_tab = ((Elf32_gptab *) - bfd_realloc ((PTR) tab, - (c + 1) * sizeof (Elf32_gptab))); - if (new_tab == NULL) - { - free (tab); - return false; - } - tab = new_tab; - tab[c].gt_entry.gt_g_value = val; - tab[c].gt_entry.gt_bytes = add; - - /* Merge in the size for the next smallest -G - value, since that will be implied by this new - value. */ - max = 0; - for (look = 1; look < c; look++) - { - if (tab[look].gt_entry.gt_g_value < val - && (max == 0 - || (tab[look].gt_entry.gt_g_value - > tab[max].gt_entry.gt_g_value))) - max = look; - } - if (max != 0) - tab[c].gt_entry.gt_bytes += - tab[max].gt_entry.gt_bytes; - - ++c; - } - - last = int_gptab.gt_entry.gt_bytes; - } - - /* Hack: reset the SEC_HAS_CONTENTS flag so that - elf_link_input_bfd ignores this section. */ - input_section->flags &=~ SEC_HAS_CONTENTS; - } - - /* The table must be sorted by -G value. */ - if (c > 2) - qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare); - - /* Swap out the table. */ - ext_tab = ((Elf32_External_gptab *) - bfd_alloc (abfd, c * sizeof (Elf32_External_gptab))); - if (ext_tab == NULL) - { - free (tab); - return false; - } - - for (i = 0; i < c; i++) - mips_elf64_swap_gptab_out (abfd, tab + i, ext_tab + i); - free (tab); - - o->_raw_size = c * sizeof (Elf32_External_gptab); - o->contents = (bfd_byte *) ext_tab; - - /* Skip this section later on (I don't think this currently - matters, but someday it might). */ - o->link_order_head = (struct bfd_link_order *) NULL; - } - } - - /* Invoke the regular ELF backend linker to do all the work. */ - if (!bfd_elf64_bfd_final_link (abfd, info)) - return false; - - /* Now write out the computed sections. */ - if (mdebug_sec != (asection *) NULL) - { - BFD_ASSERT (abfd->output_has_begun); - if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, - swap, info, - mdebug_sec->filepos)) - return false; - - bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); - } - if (gptab_data_sec != (asection *) NULL) - { - if (! bfd_set_section_contents (abfd, gptab_data_sec, - gptab_data_sec->contents, - (file_ptr) 0, - gptab_data_sec->_raw_size)) - return false; - } - - if (gptab_bss_sec != (asection *) NULL) - { - if (! bfd_set_section_contents (abfd, gptab_bss_sec, - gptab_bss_sec->contents, - (file_ptr) 0, - gptab_bss_sec->_raw_size)) - return false; - } - - return true; + return ict_irix6; } /* ECOFF swapping routines. These are used when dealing with the @@ -6987,37 +2687,40 @@ const struct elf_size_info mips_elf64_size_info = #define elf_backend_can_gc_sections true #define elf_info_to_howto mips_elf64_info_to_howto_rela #define elf_info_to_howto_rel mips_elf64_info_to_howto_rel -#define elf_backend_object_p _bfd_mips_elf_object_p +#define elf_backend_object_p mips_elf64_object_p #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing #define elf_backend_section_processing _bfd_mips_elf_section_processing #define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr #define elf_backend_fake_sections _bfd_mips_elf_fake_sections #define elf_backend_section_from_bfd_section \ - _bfd_mips_elf_section_from_bfd_section + _bfd_mips_elf_section_from_bfd_section #define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook #define elf_backend_link_output_symbol_hook \ - _bfd_mips_elf_link_output_symbol_hook + _bfd_mips_elf_link_output_symbol_hook #define elf_backend_create_dynamic_sections \ - mips_elf64_create_dynamic_sections -#define elf_backend_check_relocs mips_elf64_check_relocs + _bfd_mips_elf_create_dynamic_sections +#define elf_backend_check_relocs _bfd_mips_elf_check_relocs #define elf_backend_adjust_dynamic_symbol \ - mips_elf64_adjust_dynamic_symbol + _bfd_mips_elf_adjust_dynamic_symbol #define elf_backend_always_size_sections \ - mips_elf64_always_size_sections + _bfd_mips_elf_always_size_sections #define elf_backend_size_dynamic_sections \ - mips_elf64_size_dynamic_sections -#define elf_backend_relocate_section mips_elf64_relocate_section + _bfd_mips_elf_size_dynamic_sections +#define elf_backend_relocate_section _bfd_mips_elf_relocate_section #define elf_backend_finish_dynamic_symbol \ - mips_elf64_finish_dynamic_symbol + _bfd_mips_elf_finish_dynamic_symbol #define elf_backend_finish_dynamic_sections \ - mips_elf64_finish_dynamic_sections + _bfd_mips_elf_finish_dynamic_sections #define elf_backend_final_write_processing \ - _bfd_mips_elf_final_write_processing + _bfd_mips_elf_final_write_processing #define elf_backend_additional_program_headers \ - mips_elf64_additional_program_headers + _bfd_mips_elf_additional_program_headers #define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map -#define elf_backend_gc_mark_hook mips_elf64_gc_mark_hook -#define elf_backend_gc_sweep_hook mips_elf64_gc_sweep_hook +#define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook +#define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook +#define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol +#define elf_backend_mips_irix_compat elf64_mips_irix_compat +#define elf_backend_mips_rtype_to_howto mips_elf64_rtype_to_howto #define elf_backend_ecoff_debug_swap &mips_elf64_ecoff_debug_swap #define elf_backend_size_info mips_elf64_size_info @@ -7025,7 +2728,7 @@ const struct elf_size_info mips_elf64_size_info = #define elf_backend_plt_header_size 0 /* MIPS ELF64 can use a mixture of REL and RELA, but some Relocations - * work better/work only in RELA, so we default to this. */ + work better/work only in RELA, so we default to this. */ #define elf_backend_may_use_rel_p 1 #define elf_backend_may_use_rela_p 1 #define elf_backend_default_use_rela_p 1 @@ -7035,37 +2738,40 @@ const struct elf_size_info mips_elf64_size_info = ABI. */ #define bfd_elf64_find_nearest_line _bfd_mips_elf_find_nearest_line #define bfd_elf64_set_section_contents _bfd_mips_elf_set_section_contents +#define bfd_elf64_bfd_get_relocated_section_contents \ + _bfd_elf_mips_get_relocated_section_contents #define bfd_elf64_bfd_link_hash_table_create \ - mips_elf64_link_hash_table_create -#define bfd_elf64_bfd_final_link mips_elf64_final_link + _bfd_mips_elf_link_hash_table_create +#define bfd_elf64_bfd_final_link _bfd_mips_elf_final_link #define bfd_elf64_bfd_merge_private_bfd_data \ - _bfd_mips_elf_merge_private_bfd_data + _bfd_mips_elf_merge_private_bfd_data #define bfd_elf64_bfd_set_private_flags _bfd_mips_elf_set_private_flags #define bfd_elf64_bfd_print_private_bfd_data \ - _bfd_mips_elf_print_private_bfd_data + _bfd_mips_elf_print_private_bfd_data #define bfd_elf64_get_reloc_upper_bound mips_elf64_get_reloc_upper_bound -#define bfd_elf64_bfd_reloc_type_lookup mips_elf64_reloc_type_lookup + +/* MIPS ELF64 archive functions. */ #define bfd_elf64_archive_functions extern boolean bfd_elf64_archive_slurp_armap PARAMS((bfd *)); extern boolean bfd_elf64_archive_write_armap PARAMS((bfd *, unsigned int, struct orl *, unsigned int, int)); #define bfd_elf64_archive_slurp_extended_name_table \ - _bfd_archive_coff_slurp_extended_name_table + _bfd_archive_coff_slurp_extended_name_table #define bfd_elf64_archive_construct_extended_name_table \ - _bfd_archive_coff_construct_extended_name_table + _bfd_archive_coff_construct_extended_name_table #define bfd_elf64_archive_truncate_arname \ - _bfd_archive_coff_truncate_arname + _bfd_archive_coff_truncate_arname #define bfd_elf64_archive_read_ar_hdr _bfd_archive_coff_read_ar_hdr #define bfd_elf64_archive_openr_next_archived_file \ - _bfd_archive_coff_openr_next_archived_file + _bfd_archive_coff_openr_next_archived_file #define bfd_elf64_archive_get_elt_at_index \ - _bfd_archive_coff_get_elt_at_index + _bfd_archive_coff_get_elt_at_index #define bfd_elf64_archive_generic_stat_arch_elt \ - _bfd_archive_coff_generic_stat_arch_elt + _bfd_archive_coff_generic_stat_arch_elt #define bfd_elf64_archive_update_armap_timestamp \ - _bfd_archive_coff_update_armap_timestamp + _bfd_archive_coff_update_armap_timestamp /* The SGI style (n)64 NewABI. */ #define TARGET_LITTLE_SYM bfd_elf64_littlemips_vec |