/* MIPS-specific support for 64-bit ELF
- Copyright 1996, 1997 Free Software Foundation, Inc.
+ Copyright 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
Ian Lance Taylor, Cygnus Support
+ Linker support added by Mark Mitchell, CodeSourcery, LLC.
+ <mark@codesourcery.com>
This file is part of BFD, the Binary File Descriptor library.
#include "coff/ecoff.h"
/* The 64 bit versions of the mdebug data structures are in alpha.h. */
#include "coff/alpha.h"
-#define ECOFF_64
+#define ECOFF_SIGNED_64
#include "ecoffswap.h"
static void mips_elf64_swap_reloc_in
static void mips_elf64_swap_reloca_in
PARAMS ((bfd *, const Elf64_Mips_External_Rela *,
Elf64_Mips_Internal_Rela *));
-#if 0
static void mips_elf64_swap_reloc_out
PARAMS ((bfd *, const Elf64_Mips_Internal_Rel *,
Elf64_Mips_External_Rel *));
-#endif
static void mips_elf64_swap_reloca_out
PARAMS ((bfd *, const Elf64_Mips_Internal_Rela *,
Elf64_Mips_External_Rela *));
+static void mips_elf64_be_swap_reloc_in
+ PARAMS ((bfd *, const bfd_byte *, Elf_Internal_Rel *));
+static void mips_elf64_be_swap_reloc_out
+ PARAMS ((bfd *, const Elf_Internal_Rel *, bfd_byte *));
+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 reloc_howto_type *mips_elf64_reloc_type_lookup
PARAMS ((bfd *, bfd_reloc_code_real_type));
static long mips_elf64_get_reloc_upper_bound PARAMS ((bfd *, asection *));
static boolean mips_elf64_slurp_reloc_table
PARAMS ((bfd *, asection *, asymbol **, boolean));
static void mips_elf64_write_relocs PARAMS ((bfd *, asection *, PTR));
-static boolean mips_elf64_section_from_shdr
- PARAMS ((bfd *, Elf_Internal_Shdr *, char *));
-static boolean mips_elf64_section_processing
- PARAMS ((bfd *, Elf_Internal_Shdr *));
static boolean mips_elf64_slurp_armap PARAMS ((bfd *));
static boolean mips_elf64_write_armap
PARAMS ((bfd *, unsigned int, struct orl *, unsigned int, int));
-/* The relocation types. */
-
-enum mips_elf64_reloc_type
-{
-#if 0
- /* These are now in elf/mips.h. */
- R_MIPS_NONE = 0,
- R_MIPS_16 = 1,
- R_MIPS_32 = 2,
- R_MIPS_ADD = 2,
- R_MIPS_REL32 = 3,
- R_MIPS_REL = 3,
- R_MIPS_26 = 4,
- R_MIPS_HI16 = 5,
- R_MIPS_LO16 = 6,
- R_MIPS_GPREL16 = 7,
- R_MIPS_GPREL = 7,
- R_MIPS_LITERAL = 8,
- R_MIPS_GOT16 = 9,
- R_MIPS_GOT = 9,
- R_MIPS_PC16 = 10,
- R_MIPS_CALL16 = 11,
- R_MIPS_CALL = 11,
- R_MIPS_GPREL32 = 12,
- R_MIPS_SHIFT5 = 16,
- R_MIPS_SHIFT6 = 17,
- R_MIPS_64 = 18,
- R_MIPS_GOT_DISP = 19,
- R_MIPS_GOT_PAGE = 20,
- R_MIPS_GOT_OFST = 21,
- R_MIPS_GOT_HI16 = 22,
- R_MIPS_GOT_LO16 = 23,
- R_MIPS_SUB = 24,
- R_MIPS_INSERT_A = 25,
- R_MIPS_INSERT_B = 26,
- R_MIPS_DELETE = 27,
- R_MIPS_HIGHER = 28,
- R_MIPS_HIGHEST = 29,
- R_MIPS_CALL_HI16 = 30,
- R_MIPS_CALL_LO16 = 31,
-#endif
- R_MIPS_SCN_DISP = 32,
- R_MIPS_REL16 = 33,
- R_MIPS_ADD_IMMEDIATE = 34,
- R_MIPS_PJUMP = 35,
- R_MIPS_RELGOT = 36
-};
-
/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
from smaller values. Start with zero, widen, *then* decrement. */
#define MINUS_ONE (((bfd_vma)0) - 1)
+/* The number of local .got entries we reserve. */
+#define MIPS_RESERVED_GOTNO (2)
+
/* The relocation table used for SHT_REL sections. */
static reloc_howto_type mips_elf64_howto_table_rel[] =
false, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
- false) /* pcrel_offset */
+ false), /* pcrel_offset */
+
+ /* Protected jump conversion. This is an optimization hint. No
+ relocation is required for correctness. */
+ HOWTO (R_MIPS_JALR, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_MIPS_JALR", /* name */
+ false, /* partial_inplace */
+ 0x00000000, /* src_mask */
+ 0x00000000, /* dst_mask */
+ false), /* pcrel_offset */
};
/* The relocation table used for SHT_RELA sections. */
false, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
- false) /* pcrel_offset */
+ false), /* pcrel_offset */
+
+ /* Protected jump conversion. This is an optimization hint. No
+ relocation is required for correctness. */
+ HOWTO (R_MIPS_JALR, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_MIPS_JALR", /* name */
+ false, /* partial_inplace */
+ 0x00000000, /* src_mask */
+ 0x00000000, /* dst_mask */
+ false), /* pcrel_offset */
};
/* Swap in a MIPS 64-bit Rel reloc. */
dst->r_addend = bfd_h_get_signed_64 (abfd, (bfd_byte *) src->r_addend);
}
-#if 0
-
-/* This is not currently used. */
-
/* Swap out a MIPS 64-bit Rel reloc. */
static void
bfd_h_put_8 (abfd, src->r_type, (bfd_byte *) dst->r_type);
}
-#endif /* 0 */
-
/* Swap out a MIPS 64-bit Rela reloc. */
static void
bfd_h_put_64 (abfd, src->r_addend, (bfd_byte *) dst->r_addend);
}
+/* Swap in a MIPS 64-bit Rel reloc. */
+
+static void
+mips_elf64_be_swap_reloc_in (abfd, src, dst)
+ bfd *abfd;
+ const bfd_byte *src;
+ Elf_Internal_Rel *dst;
+{
+ Elf64_Mips_Internal_Rel mirel;
+
+ mips_elf64_swap_reloc_in (abfd,
+ (const Elf64_Mips_External_Rel *) src,
+ &mirel);
+
+ dst[0].r_offset = mirel.r_offset;
+ dst[0].r_info = ELF32_R_INFO (mirel.r_sym, mirel.r_type);
+ dst[1].r_offset = mirel.r_offset;
+ dst[1].r_info = ELF32_R_INFO (mirel.r_ssym, mirel.r_type2);
+ dst[2].r_offset = mirel.r_offset;
+ dst[2].r_info = ELF32_R_INFO (STN_UNDEF, mirel.r_type3);
+}
+
+/* Swap in a MIPS 64-bit Rela reloc. */
+
+static void
+mips_elf64_be_swap_reloca_in (abfd, src, dst)
+ bfd *abfd;
+ const bfd_byte *src;
+ Elf_Internal_Rela *dst;
+{
+ Elf64_Mips_Internal_Rela mirela;
+
+ mips_elf64_swap_reloca_in (abfd,
+ (const Elf64_Mips_External_Rela *) src,
+ &mirela);
+
+ dst[0].r_offset = mirela.r_offset;
+ dst[0].r_info = ELF32_R_INFO (mirela.r_sym, mirela.r_type);
+ dst[0].r_addend = mirela.r_addend;
+ dst[1].r_offset = mirela.r_offset;
+ dst[1].r_info = ELF32_R_INFO (mirela.r_ssym, mirela.r_type2);
+ dst[1].r_addend = 0;
+ dst[2].r_offset = mirela.r_offset;
+ dst[2].r_info = ELF32_R_INFO (STN_UNDEF, mirela.r_type3);
+ dst[2].r_addend = 0;
+}
+
+/* Swap out a MIPS 64-bit Rel reloc. */
+
+static void
+mips_elf64_be_swap_reloc_out (abfd, src, dst)
+ bfd *abfd;
+ const Elf_Internal_Rel *src;
+ bfd_byte *dst;
+{
+ Elf64_Mips_Internal_Rel mirel;
+
+ mirel.r_offset = src->r_offset;
+ mirel.r_type = ELF32_R_TYPE (src->r_info);
+ mirel.r_sym = ELF32_R_SYM (src->r_info);
+ mirel.r_type2 = R_MIPS_NONE;
+ mirel.r_ssym = STN_UNDEF;
+ mirel.r_type3 = R_MIPS_NONE;
+
+ mips_elf64_swap_reloc_out (abfd, &mirel,
+ (Elf64_Mips_External_Rel *) dst);
+}
+
+/* Swap out a MIPS 64-bit Rela reloc. */
+
+static void
+mips_elf64_be_swap_reloca_out (abfd, src, dst)
+ bfd *abfd;
+ const Elf_Internal_Rela *src;
+ bfd_byte *dst;
+{
+ Elf64_Mips_Internal_Rela mirela;
+
+ mirela.r_offset = src->r_offset;
+ mirela.r_type = ELF32_R_TYPE (src->r_info);
+ mirela.r_addend = src->r_addend;
+ mirela.r_sym = ELF32_R_SYM (src->r_info);
+ mirela.r_type2 = R_MIPS_NONE;
+ mirela.r_ssym = STN_UNDEF;
+ mirela.r_type3 = R_MIPS_NONE;
+
+ mips_elf64_swap_reloca_out (abfd, &mirela,
+ (Elf64_Mips_External_Rela *) dst);
+}
+
/* A mapping from BFD reloc types to MIPS ELF reloc types. */
struct elf_reloc_map
{
bfd_reloc_code_real_type bfd_reloc_val;
- enum mips_elf64_reloc_type elf_reloc_val;
+ enum elf_mips_reloc_type elf_reloc_val;
};
static CONST struct elf_reloc_map mips_reloc_map[] =
{ BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 },
{ BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 },
{ BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 },
- { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 }
+ { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 },
+ { BFD_RELOC_MIPS_SUB, R_MIPS_SUB },
+ { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE },
+ { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST },
+ { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP }
};
/* Given a BFD reloc type, return a howto structure. */
used_ssym = false;
for (ir = 0; ir < 3; ir++)
{
- enum mips_elf64_reloc_type type;
+ enum elf_mips_reloc_type type;
switch (ir)
{
default:
abort ();
case 0:
- type = (enum mips_elf64_reloc_type) rela.r_type;
+ type = (enum elf_mips_reloc_type) rela.r_type;
break;
case 1:
- type = (enum mips_elf64_reloc_type) rela.r_type2;
+ type = (enum elf_mips_reloc_type) rela.r_type2;
break;
case 2:
- type = (enum mips_elf64_reloc_type) rela.r_type3;
+ type = (enum elf_mips_reloc_type) rela.r_type3;
break;
}
== count);
}
\f
-/* Handle a 64-bit MIPS ELF specific section. */
-
-static boolean
-mips_elf64_section_from_shdr (abfd, hdr, name)
- bfd *abfd;
- Elf_Internal_Shdr *hdr;
- char *name;
-{
- if (! _bfd_mips_elf_section_from_shdr (abfd, hdr, name))
- return false;
-
- /* For a SHT_MIPS_OPTIONS section, look for a ODK_REGINFO entry, and
- set the gp value based on what we find. We may see both
- SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS/ODK_REGINFO; in that case,
- they should agree. */
- if (hdr->sh_type == SHT_MIPS_OPTIONS)
- {
- bfd_byte *contents, *l, *lend;
-
- contents = (bfd_byte *) bfd_malloc (hdr->sh_size);
- if (contents == NULL)
- return false;
- if (! bfd_get_section_contents (abfd, hdr->bfd_section, contents,
- (file_ptr) 0, hdr->sh_size))
- {
- free (contents);
- return false;
- }
- l = contents;
- lend = contents + hdr->sh_size;
- while (l + sizeof (Elf_External_Options) <= lend)
- {
- Elf_Internal_Options intopt;
-
- bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l,
- &intopt);
- if (intopt.kind == ODK_REGINFO)
- {
- Elf64_Internal_RegInfo intreg;
-
- bfd_mips_elf64_swap_reginfo_in
- (abfd,
- ((Elf64_External_RegInfo *)
- (l + sizeof (Elf_External_Options))),
- &intreg);
- elf_gp (abfd) = intreg.ri_gp_value;
- }
- l += intopt.size;
- }
- free (contents);
- }
-
- return true;
-}
-
-/* Work over a section just before writing it out. We update the GP
- value in the SHT_MIPS_OPTIONS section based on the value we are
- using. */
-
-static boolean
-mips_elf64_section_processing (abfd, hdr)
- bfd *abfd;
- Elf_Internal_Shdr *hdr;
-{
- if (hdr->sh_type == SHT_MIPS_OPTIONS
- && hdr->bfd_section != NULL
- && elf_section_data (hdr->bfd_section) != NULL
- && elf_section_data (hdr->bfd_section)->tdata != NULL)
- {
- bfd_byte *contents, *l, *lend;
-
- /* We stored the section contents in the elf_section_data tdata
- field in the set_section_contents routine. We save the
- section contents so that we don't have to read them again.
- At this point we know that elf_gp is set, so we can look
- through the section contents to see if there is an
- ODK_REGINFO structure. */
-
- contents = (bfd_byte *) elf_section_data (hdr->bfd_section)->tdata;
- l = contents;
- lend = contents + hdr->sh_size;
- while (l + sizeof (Elf_External_Options) <= lend)
- {
- Elf_Internal_Options intopt;
-
- bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l,
- &intopt);
- if (intopt.kind == ODK_REGINFO)
- {
- bfd_byte buf[8];
-
- if (bfd_seek (abfd,
- (hdr->sh_offset
- + (l - contents)
- + sizeof (Elf_External_Options)
- + (sizeof (Elf64_External_RegInfo) - 8)),
- SEEK_SET) == -1)
- return false;
- bfd_h_put_64 (abfd, elf_gp (abfd), buf);
- if (bfd_write (buf, 1, 8, abfd) != 8)
- return false;
- }
- l += intopt.size;
- }
- }
-
- return _bfd_mips_elf_section_processing (abfd, hdr);
-}
-\f
/* Irix 6 defines a brand new archive map format, so that they can
have archives more than 4 GB in size. */
sizeof (Elf64_External_Sym),
sizeof (Elf64_External_Dyn),
sizeof (Elf_External_Note),
+ 4, /* hash-table entry size */
+ 3, /* internal relocations per external relocations */
64, /* arch_size */
8, /* file_align */
ELFCLASS64,
bfd_elf64_swap_symbol_out,
mips_elf64_slurp_reloc_table,
bfd_elf64_slurp_symbol_table,
- bfd_elf64_swap_dyn_in
+ bfd_elf64_swap_dyn_in,
+ bfd_elf64_swap_dyn_out,
+ mips_elf64_be_swap_reloc_in,
+ mips_elf64_be_swap_reloc_out,
+ mips_elf64_be_swap_reloca_in,
+ mips_elf64_be_swap_reloca_out
};
#define TARGET_LITTLE_SYM bfd_elf64_littlemips_vec
#define TARGET_BIG_NAME "elf64-bigmips"
#define ELF_ARCH bfd_arch_mips
#define ELF_MACHINE_CODE EM_MIPS
+
#define ELF_MAXPAGESIZE 0x1000
+
+#define elf_backend_collect true
+#define elf_backend_type_change_ok true
+#define elf_backend_can_gc_sections true
#define elf_backend_size_info mips_elf64_size_info
#define elf_backend_object_p _bfd_mips_elf_object_p
-#define elf_backend_section_from_shdr mips_elf64_section_from_shdr
+#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
-#define elf_backend_section_processing mips_elf64_section_processing
+#define elf_backend_section_processing _bfd_mips_elf_section_processing
#define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing
+#define elf_backend_additional_program_headers \
+ _bfd_mips_elf_additional_program_headers
+#define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map
#define elf_backend_final_write_processing \
_bfd_mips_elf_final_write_processing
#define elf_backend_ecoff_debug_swap &mips_elf64_ecoff_debug_swap
-
+#define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook
+#define elf_backend_create_dynamic_sections \
+ _bfd_mips_elf_create_dynamic_sections
+#define elf_backend_check_relocs _bfd_mips_elf_check_relocs
+#define elf_backend_adjust_dynamic_symbol \
+ _bfd_mips_elf_adjust_dynamic_symbol
+#define elf_backend_always_size_sections \
+ _bfd_mips_elf_always_size_sections
+#define elf_backend_size_dynamic_sections \
+ _bfd_mips_elf_size_dynamic_sections
+#define elf_backend_relocate_section _bfd_mips_elf_relocate_section
+#define elf_backend_link_output_symbol_hook \
+ _bfd_mips_elf_link_output_symbol_hook
+#define elf_backend_finish_dynamic_symbol \
+ _bfd_mips_elf_finish_dynamic_symbol
+#define elf_backend_finish_dynamic_sections \
+ _bfd_mips_elf_finish_dynamic_sections
+#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_got_header_size (4*MIPS_RESERVED_GOTNO)
+#define elf_backend_plt_header_size 0
+#define elf_backend_may_use_rel_p 1
+
+/* We don't set bfd_elf64_bfd_is_local_label_name because the 32-bit
+ MIPS-specific function only applies to IRIX5, which had no 64-bit
+ ABI. */
#define bfd_elf64_find_nearest_line _bfd_mips_elf_find_nearest_line
-#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
#define bfd_elf64_set_section_contents _bfd_mips_elf_set_section_contents
+#define bfd_elf64_bfd_link_hash_table_create \
+ _bfd_mips_elf_link_hash_table_create
+#define bfd_elf64_bfd_final_link _bfd_mips_elf_final_link
#define bfd_elf64_bfd_copy_private_bfd_data \
_bfd_mips_elf_copy_private_bfd_data
#define bfd_elf64_bfd_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
+#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
#define bfd_elf64_archive_functions
#define bfd_elf64_archive_slurp_armap mips_elf64_slurp_armap
#define bfd_elf64_archive_slurp_extended_name_table \
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