diff options
Diffstat (limited to 'binutils-2.17/bfd/elf32-m68k.c')
| -rw-r--r-- | binutils-2.17/bfd/elf32-m68k.c | 2449 |
1 files changed, 0 insertions, 2449 deletions
diff --git a/binutils-2.17/bfd/elf32-m68k.c b/binutils-2.17/bfd/elf32-m68k.c deleted file mode 100644 index df988a84..00000000 --- a/binutils-2.17/bfd/elf32-m68k.c +++ /dev/null @@ -1,2449 +0,0 @@ -/* Motorola 68k series support for 32-bit ELF - Copyright 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, - 2004, 2005, 2006 Free Software Foundation, Inc. - - This file is part of BFD, the Binary File Descriptor library. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ - -#include "bfd.h" -#include "sysdep.h" -#include "bfdlink.h" -#include "libbfd.h" -#include "elf-bfd.h" -#include "elf/m68k.h" -#include "opcode/m68k.h" - -static reloc_howto_type *reloc_type_lookup - PARAMS ((bfd *, bfd_reloc_code_real_type)); -static void rtype_to_howto - PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); -static struct bfd_hash_entry *elf_m68k_link_hash_newfunc - PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); -static struct bfd_link_hash_table *elf_m68k_link_hash_table_create - PARAMS ((bfd *)); -static bfd_boolean elf_m68k_check_relocs - PARAMS ((bfd *, struct bfd_link_info *, asection *, - const Elf_Internal_Rela *)); -static asection *elf_m68k_gc_mark_hook - PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *, - struct elf_link_hash_entry *, Elf_Internal_Sym *)); -static bfd_boolean elf_m68k_gc_sweep_hook - PARAMS ((bfd *, struct bfd_link_info *, asection *, - const Elf_Internal_Rela *)); -static bfd_boolean elf_m68k_adjust_dynamic_symbol - PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); -static bfd_boolean elf_m68k_size_dynamic_sections - PARAMS ((bfd *, struct bfd_link_info *)); -static bfd_boolean elf_m68k_discard_copies - PARAMS ((struct elf_link_hash_entry *, PTR)); -static bfd_boolean elf_m68k_relocate_section - PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, - Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); -static bfd_boolean elf_m68k_finish_dynamic_symbol - PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, - Elf_Internal_Sym *)); -static bfd_boolean elf_m68k_finish_dynamic_sections - PARAMS ((bfd *, struct bfd_link_info *)); - -static bfd_boolean elf32_m68k_set_private_flags - PARAMS ((bfd *, flagword)); -static bfd_boolean elf32_m68k_merge_private_bfd_data - PARAMS ((bfd *, bfd *)); -static bfd_boolean elf32_m68k_print_private_bfd_data - PARAMS ((bfd *, PTR)); -static enum elf_reloc_type_class elf32_m68k_reloc_type_class - PARAMS ((const Elf_Internal_Rela *)); - -static reloc_howto_type howto_table[] = { - HOWTO(R_68K_NONE, 0, 0, 0, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_NONE", FALSE, 0, 0x00000000,FALSE), - HOWTO(R_68K_32, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_32", FALSE, 0, 0xffffffff,FALSE), - HOWTO(R_68K_16, 0, 1,16, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_16", FALSE, 0, 0x0000ffff,FALSE), - HOWTO(R_68K_8, 0, 0, 8, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_8", FALSE, 0, 0x000000ff,FALSE), - HOWTO(R_68K_PC32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PC32", FALSE, 0, 0xffffffff,TRUE), - HOWTO(R_68K_PC16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC16", FALSE, 0, 0x0000ffff,TRUE), - HOWTO(R_68K_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC8", FALSE, 0, 0x000000ff,TRUE), - HOWTO(R_68K_GOT32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_GOT32", FALSE, 0, 0xffffffff,TRUE), - HOWTO(R_68K_GOT16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT16", FALSE, 0, 0x0000ffff,TRUE), - HOWTO(R_68K_GOT8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT8", FALSE, 0, 0x000000ff,TRUE), - HOWTO(R_68K_GOT32O, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_GOT32O", FALSE, 0, 0xffffffff,FALSE), - HOWTO(R_68K_GOT16O, 0, 1,16, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT16O", FALSE, 0, 0x0000ffff,FALSE), - HOWTO(R_68K_GOT8O, 0, 0, 8, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT8O", FALSE, 0, 0x000000ff,FALSE), - HOWTO(R_68K_PLT32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PLT32", FALSE, 0, 0xffffffff,TRUE), - HOWTO(R_68K_PLT16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT16", FALSE, 0, 0x0000ffff,TRUE), - HOWTO(R_68K_PLT8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT8", FALSE, 0, 0x000000ff,TRUE), - HOWTO(R_68K_PLT32O, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PLT32O", FALSE, 0, 0xffffffff,FALSE), - HOWTO(R_68K_PLT16O, 0, 1,16, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT16O", FALSE, 0, 0x0000ffff,FALSE), - HOWTO(R_68K_PLT8O, 0, 0, 8, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT8O", FALSE, 0, 0x000000ff,FALSE), - HOWTO(R_68K_COPY, 0, 0, 0, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_COPY", FALSE, 0, 0xffffffff,FALSE), - HOWTO(R_68K_GLOB_DAT, 0, 2,32, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_GLOB_DAT", FALSE, 0, 0xffffffff,FALSE), - HOWTO(R_68K_JMP_SLOT, 0, 2,32, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_JMP_SLOT", FALSE, 0, 0xffffffff,FALSE), - HOWTO(R_68K_RELATIVE, 0, 2,32, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_RELATIVE", FALSE, 0, 0xffffffff,FALSE), - /* GNU extension to record C++ vtable hierarchy. */ - HOWTO (R_68K_GNU_VTINHERIT, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 0, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - NULL, /* special_function */ - "R_68K_GNU_VTINHERIT", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - FALSE), - /* GNU extension to record C++ vtable member usage. */ - HOWTO (R_68K_GNU_VTENTRY, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 0, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - _bfd_elf_rel_vtable_reloc_fn, /* special_function */ - "R_68K_GNU_VTENTRY", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - FALSE), -}; - -static void -rtype_to_howto (abfd, cache_ptr, dst) - bfd *abfd ATTRIBUTE_UNUSED; - arelent *cache_ptr; - Elf_Internal_Rela *dst; -{ - BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_68K_max); - cache_ptr->howto = &howto_table[ELF32_R_TYPE(dst->r_info)]; -} - -#define elf_info_to_howto rtype_to_howto - -static const struct -{ - bfd_reloc_code_real_type bfd_val; - int elf_val; -} reloc_map[] = { - { BFD_RELOC_NONE, R_68K_NONE }, - { BFD_RELOC_32, R_68K_32 }, - { BFD_RELOC_16, R_68K_16 }, - { BFD_RELOC_8, R_68K_8 }, - { BFD_RELOC_32_PCREL, R_68K_PC32 }, - { BFD_RELOC_16_PCREL, R_68K_PC16 }, - { BFD_RELOC_8_PCREL, R_68K_PC8 }, - { BFD_RELOC_32_GOT_PCREL, R_68K_GOT32 }, - { BFD_RELOC_16_GOT_PCREL, R_68K_GOT16 }, - { BFD_RELOC_8_GOT_PCREL, R_68K_GOT8 }, - { BFD_RELOC_32_GOTOFF, R_68K_GOT32O }, - { BFD_RELOC_16_GOTOFF, R_68K_GOT16O }, - { BFD_RELOC_8_GOTOFF, R_68K_GOT8O }, - { BFD_RELOC_32_PLT_PCREL, R_68K_PLT32 }, - { BFD_RELOC_16_PLT_PCREL, R_68K_PLT16 }, - { BFD_RELOC_8_PLT_PCREL, R_68K_PLT8 }, - { BFD_RELOC_32_PLTOFF, R_68K_PLT32O }, - { BFD_RELOC_16_PLTOFF, R_68K_PLT16O }, - { BFD_RELOC_8_PLTOFF, R_68K_PLT8O }, - { BFD_RELOC_NONE, R_68K_COPY }, - { BFD_RELOC_68K_GLOB_DAT, R_68K_GLOB_DAT }, - { BFD_RELOC_68K_JMP_SLOT, R_68K_JMP_SLOT }, - { BFD_RELOC_68K_RELATIVE, R_68K_RELATIVE }, - { BFD_RELOC_CTOR, R_68K_32 }, - { BFD_RELOC_VTABLE_INHERIT, R_68K_GNU_VTINHERIT }, - { BFD_RELOC_VTABLE_ENTRY, R_68K_GNU_VTENTRY }, -}; - -static reloc_howto_type * -reloc_type_lookup (abfd, code) - bfd *abfd ATTRIBUTE_UNUSED; - bfd_reloc_code_real_type code; -{ - unsigned int i; - for (i = 0; i < sizeof (reloc_map) / sizeof (reloc_map[0]); i++) - { - if (reloc_map[i].bfd_val == code) - return &howto_table[reloc_map[i].elf_val]; - } - return 0; -} - -#define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup -#define ELF_ARCH bfd_arch_m68k - -/* Functions for the m68k ELF linker. */ - -/* The name of the dynamic interpreter. This is put in the .interp - section. */ - -#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" - -/* The size in bytes of an entry in the procedure linkage table. */ - -#define PLT_ENTRY_SIZE 20 - -/* The first entry in a procedure linkage table looks like this. See - the SVR4 ABI m68k supplement to see how this works. */ - -static const bfd_byte elf_m68k_plt0_entry[PLT_ENTRY_SIZE] = -{ - 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */ - 0, 0, 0, 0, /* replaced with offset to .got + 4. */ - 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,addr]) */ - 0, 0, 0, 0, /* replaced with offset to .got + 8. */ - 0, 0, 0, 0 /* pad out to 20 bytes. */ -}; - -/* Subsequent entries in a procedure linkage table look like this. */ - -static const bfd_byte elf_m68k_plt_entry[PLT_ENTRY_SIZE] = -{ - 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,symbol@GOTPC]) */ - 0, 0, 0, 0, /* replaced with offset to symbol's .got entry. */ - 0x2f, 0x3c, /* move.l #offset,-(%sp) */ - 0, 0, 0, 0, /* replaced with offset into relocation table. */ - 0x60, 0xff, /* bra.l .plt */ - 0, 0, 0, 0 /* replaced with offset to start of .plt. */ -}; - - -#define CFV4E_PLT_ENTRY_SIZE 24 - -#define CFV4E_FLAG(abfd) (elf_elfheader (abfd)->e_flags & EF_M68K_CFV4E) - -static const bfd_byte elf_cfv4e_plt0_entry[CFV4E_PLT_ENTRY_SIZE] = -{ - 0x20, 0x3c, - 0, 0, 0, 0, /* Replaced with offset to .got + 4. */ - 0x2f, 0x3b, 0x08, 0xfa, /* move.l (%pc,addr),-(%sp) */ - 0x20, 0x3c, - 0, 0, 0, 0, /* Replaced with offset to .got + 8. */ - 0x20, 0x7b, 0x08, 0x00, /* move.l (%pc,%d0:l), %a0 */ - 0x4e, 0xd0, /* jmp (%a0) */ - 0x4e, 0x71 /* nop */ -}; - -/* Subsequent entries in a procedure linkage table look like this. */ - -static const bfd_byte elf_cfv4e_plt_entry[CFV4E_PLT_ENTRY_SIZE] = -{ - 0x20, 0x3c, - 0, 0, 0, 0, /* Replaced with offset to symbol's .got entry. */ - 0x20, 0x7b, 0x08, 0x00, /* move.l (%pc,%d0:l), %a0 */ - 0x4e, 0xd0, /* jmp (%a0) */ - 0x2f, 0x3c, /* move.l #offset,-(%sp) */ - 0, 0, 0, 0, /* Replaced with offset into relocation table. */ - 0x60, 0xff, /* bra.l .plt */ - 0, 0, 0, 0 /* Replaced with offset to start of .plt. */ -}; - -#define CPU32_FLAG(abfd) (elf_elfheader (abfd)->e_flags & EF_M68K_CPU32) - -#define PLT_CPU32_ENTRY_SIZE 24 -/* Procedure linkage table entries for the cpu32 */ -static const bfd_byte elf_cpu32_plt0_entry[PLT_CPU32_ENTRY_SIZE] = -{ - 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */ - 0, 0, 0, 0, /* replaced with offset to .got + 4. */ - 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */ - 0, 0, 0, 0, /* replace with offset to .got +8. */ - 0x4e, 0xd1, /* jmp %a1@ */ - 0, 0, 0, 0, /* pad out to 24 bytes. */ - 0, 0 -}; - -static const bfd_byte elf_cpu32_plt_entry[PLT_CPU32_ENTRY_SIZE] = -{ - 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */ - 0, 0, 0, 0, /* replaced with offset to symbol's .got entry. */ - 0x4e, 0xd1, /* jmp %a1@ */ - 0x2f, 0x3c, /* move.l #offset,-(%sp) */ - 0, 0, 0, 0, /* replaced with offset into relocation table. */ - 0x60, 0xff, /* bra.l .plt */ - 0, 0, 0, 0, /* replaced with offset to start of .plt. */ - 0, 0 -}; - -/* The m68k linker needs to keep track of the number of relocs that it - decides to copy in check_relocs for each symbol. This is so that it - can discard PC relative relocs if it doesn't need them when linking - with -Bsymbolic. We store the information in a field extending the - regular ELF linker hash table. */ - -/* This structure keeps track of the number of PC relative relocs we have - copied for a given symbol. */ - -struct elf_m68k_pcrel_relocs_copied -{ - /* Next section. */ - struct elf_m68k_pcrel_relocs_copied *next; - /* A section in dynobj. */ - asection *section; - /* Number of relocs copied in this section. */ - bfd_size_type count; -}; - -/* m68k ELF linker hash entry. */ - -struct elf_m68k_link_hash_entry -{ - struct elf_link_hash_entry root; - - /* Number of PC relative relocs copied for this symbol. */ - struct elf_m68k_pcrel_relocs_copied *pcrel_relocs_copied; -}; - -#define elf_m68k_hash_entry(ent) ((struct elf_m68k_link_hash_entry *) (ent)) - -/* m68k ELF linker hash table. */ - -struct elf_m68k_link_hash_table -{ - struct elf_link_hash_table root; - - /* Small local sym to section mapping cache. */ - struct sym_sec_cache sym_sec; -}; - -/* Get the m68k ELF linker hash table from a link_info structure. */ - -#define elf_m68k_hash_table(p) \ - ((struct elf_m68k_link_hash_table *) (p)->hash) - -/* Create an entry in an m68k ELF linker hash table. */ - -static struct bfd_hash_entry * -elf_m68k_link_hash_newfunc (entry, table, string) - struct bfd_hash_entry *entry; - struct bfd_hash_table *table; - const char *string; -{ - struct bfd_hash_entry *ret = entry; - - /* Allocate the structure if it has not already been allocated by a - subclass. */ - if (ret == NULL) - ret = bfd_hash_allocate (table, - sizeof (struct elf_m68k_link_hash_entry)); - if (ret == NULL) - return ret; - - /* Call the allocation method of the superclass. */ - ret = _bfd_elf_link_hash_newfunc (ret, table, string); - if (ret != NULL) - elf_m68k_hash_entry (ret)->pcrel_relocs_copied = NULL; - - return ret; -} - -/* Create an m68k ELF linker hash table. */ - -static struct bfd_link_hash_table * -elf_m68k_link_hash_table_create (abfd) - bfd *abfd; -{ - struct elf_m68k_link_hash_table *ret; - bfd_size_type amt = sizeof (struct elf_m68k_link_hash_table); - - ret = (struct elf_m68k_link_hash_table *) bfd_malloc (amt); - if (ret == (struct elf_m68k_link_hash_table *) NULL) - return NULL; - - if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, - elf_m68k_link_hash_newfunc, - sizeof (struct elf_m68k_link_hash_entry))) - { - free (ret); - return NULL; - } - - ret->sym_sec.abfd = NULL; - - return &ret->root.root; -} - -/* Set the right machine number. */ - -static bfd_boolean -elf32_m68k_object_p (bfd *abfd) -{ - unsigned int mach = 0; - unsigned features = 0; - flagword eflags = elf_elfheader (abfd)->e_flags; - - if (eflags & EF_M68K_M68000) - features |= m68000; - else if (eflags & EF_M68K_CPU32) - features |= cpu32; - else if (eflags & EF_M68K_ISA_MASK) - { - switch (eflags & EF_M68K_ISA_MASK) - { - case EF_M68K_ISA_A_NODIV: - features |= mcfisa_a; - break; - case EF_M68K_ISA_A: - features |= mcfisa_a|mcfhwdiv; - break; - case EF_M68K_ISA_A_PLUS: - features |= mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp; - break; - case EF_M68K_ISA_B_NOUSP: - features |= mcfisa_a|mcfisa_b|mcfhwdiv; - break; - case EF_M68K_ISA_B: - features |= mcfisa_a|mcfisa_b|mcfhwdiv|mcfusp; - break; - } - switch (eflags & EF_M68K_MAC_MASK) - { - case EF_M68K_MAC: - features |= mcfmac; - break; - case EF_M68K_EMAC: - features |= mcfemac; - break; - } - if (eflags & EF_M68K_FLOAT) - features |= cfloat; - } - - mach = bfd_m68k_features_to_mach (features); - bfd_default_set_arch_mach (abfd, bfd_arch_m68k, mach); - - return TRUE; -} - -/* Keep m68k-specific flags in the ELF header. */ -static bfd_boolean -elf32_m68k_set_private_flags (abfd, flags) - bfd *abfd; - flagword flags; -{ - elf_elfheader (abfd)->e_flags = flags; - elf_flags_init (abfd) = TRUE; - return TRUE; -} - -/* Merge backend specific data from an object file to the output - object file when linking. */ -static bfd_boolean -elf32_m68k_merge_private_bfd_data (ibfd, obfd) - bfd *ibfd; - bfd *obfd; -{ - flagword out_flags; - flagword in_flags; - flagword out_isa; - flagword in_isa; - const bfd_arch_info_type *arch_info; - - if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour - || bfd_get_flavour (obfd) != bfd_target_elf_flavour) - return FALSE; - - /* Get the merged machine. This checks for incompatibility between - Coldfire & non-Coldfire flags, incompability between different - Coldfire ISAs, and incompability between different MAC types. */ - arch_info = bfd_arch_get_compatible (ibfd, obfd, FALSE); - if (!arch_info) - return FALSE; - - bfd_set_arch_mach (obfd, bfd_arch_m68k, arch_info->mach); - - in_flags = elf_elfheader (ibfd)->e_flags; - if (!elf_flags_init (obfd)) - { - elf_flags_init (obfd) = TRUE; - out_flags = in_flags; - } - else - { - out_flags = elf_elfheader (obfd)->e_flags; - in_isa = (in_flags & EF_M68K_ISA_MASK); - out_isa = (out_flags & EF_M68K_ISA_MASK); - if (in_isa > out_isa) - out_flags ^= in_isa ^ out_isa; - out_flags |= in_flags ^ in_isa; - } - elf_elfheader (obfd)->e_flags = out_flags; - - return TRUE; -} - -/* Display the flags field. */ -static bfd_boolean -elf32_m68k_print_private_bfd_data (abfd, ptr) - bfd *abfd; - PTR ptr; -{ - FILE *file = (FILE *) ptr; - flagword eflags = elf_elfheader (abfd)->e_flags; - - BFD_ASSERT (abfd != NULL && ptr != NULL); - - /* Print normal ELF private data. */ - _bfd_elf_print_private_bfd_data (abfd, ptr); - - /* Ignore init flag - it may not be set, despite the flags field containing valid data. */ - - /* xgettext:c-format */ - fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); - - if (eflags & EF_M68K_CPU32) - fprintf (file, " [cpu32]"); - - if (eflags & EF_M68K_M68000) - fprintf (file, " [m68000]"); - - if (eflags & EF_M68K_CFV4E) - fprintf (file, " [cfv4e]"); - - if (eflags & EF_M68K_ISA_MASK) - { - char const *isa = _("unknown"); - char const *mac = _("unknown"); - char const *additional = ""; - - switch (eflags & EF_M68K_ISA_MASK) - { - case EF_M68K_ISA_A_NODIV: - isa = "A"; - additional = " [nodiv]"; - break; - case EF_M68K_ISA_A: - isa = "A"; - break; - case EF_M68K_ISA_A_PLUS: - isa = "A+"; - break; - case EF_M68K_ISA_B_NOUSP: - isa = "B"; - additional = " [nousp]"; - break; - case EF_M68K_ISA_B: - isa = "B"; - break; - } - fprintf (file, " [isa %s]%s", isa, additional); - if (eflags & EF_M68K_FLOAT) - fprintf (file, " [float]"); - switch (eflags & EF_M68K_MAC_MASK) - { - case 0: - mac = NULL; - break; - case EF_M68K_MAC: - mac = "mac"; - break; - case EF_M68K_EMAC: - mac = "emac"; - break; - } - if (mac) - fprintf (file, " [%s]", mac); - } - - fputc ('\n', file); - - return TRUE; -} -/* Look through the relocs for a section during the first phase, and - allocate space in the global offset table or procedure linkage - table. */ - -static bfd_boolean -elf_m68k_check_relocs (abfd, info, sec, relocs) - bfd *abfd; - struct bfd_link_info *info; - asection *sec; - const Elf_Internal_Rela *relocs; -{ - bfd *dynobj; - Elf_Internal_Shdr *symtab_hdr; - struct elf_link_hash_entry **sym_hashes; - bfd_signed_vma *local_got_refcounts; - const Elf_Internal_Rela *rel; - const Elf_Internal_Rela *rel_end; - asection *sgot; - asection *srelgot; - asection *sreloc; - - if (info->relocatable) - return TRUE; - - dynobj = elf_hash_table (info)->dynobj; - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (abfd); - local_got_refcounts = elf_local_got_refcounts (abfd); - - sgot = NULL; - srelgot = NULL; - sreloc = NULL; - - rel_end = relocs + sec->reloc_count; - for (rel = relocs; rel < rel_end; rel++) - { - unsigned long r_symndx; - struct elf_link_hash_entry *h; - - r_symndx = ELF32_R_SYM (rel->r_info); - - if (r_symndx < symtab_hdr->sh_info) - h = NULL; - else - { - h = sym_hashes[r_symndx - symtab_hdr->sh_info]; - while (h->root.type == bfd_link_hash_indirect - || h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - } - - switch (ELF32_R_TYPE (rel->r_info)) - { - case R_68K_GOT8: - case R_68K_GOT16: - case R_68K_GOT32: - if (h != NULL - && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) - break; - /* Fall through. */ - case R_68K_GOT8O: - case R_68K_GOT16O: - case R_68K_GOT32O: - /* This symbol requires a global offset table entry. */ - - if (dynobj == NULL) - { - /* Create the .got section. */ - elf_hash_table (info)->dynobj = dynobj = abfd; - if (!_bfd_elf_create_got_section (dynobj, info)) - return FALSE; - } - - if (sgot == NULL) - { - sgot = bfd_get_section_by_name (dynobj, ".got"); - BFD_ASSERT (sgot != NULL); - } - - if (srelgot == NULL - && (h != NULL || info->shared)) - { - srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); - if (srelgot == NULL) - { - srelgot = bfd_make_section_with_flags (dynobj, - ".rela.got", - (SEC_ALLOC - | SEC_LOAD - | SEC_HAS_CONTENTS - | SEC_IN_MEMORY - | SEC_LINKER_CREATED - | SEC_READONLY)); - if (srelgot == NULL - || !bfd_set_section_alignment (dynobj, srelgot, 2)) - return FALSE; - } - } - - if (h != NULL) - { - if (h->got.refcount == 0) - { - /* Make sure this symbol is output as a dynamic symbol. */ - if (h->dynindx == -1 - && !h->forced_local) - { - if (!bfd_elf_link_record_dynamic_symbol (info, h)) - return FALSE; - } - - /* Allocate space in the .got section. */ - sgot->size += 4; - /* Allocate relocation space. */ - srelgot->size += sizeof (Elf32_External_Rela); - } - h->got.refcount++; - } - else - { - /* This is a global offset table entry for a local symbol. */ - if (local_got_refcounts == NULL) - { - bfd_size_type size; - - size = symtab_hdr->sh_info; - size *= sizeof (bfd_signed_vma); - local_got_refcounts = ((bfd_signed_vma *) - bfd_zalloc (abfd, size)); - if (local_got_refcounts == NULL) - return FALSE; - elf_local_got_refcounts (abfd) = local_got_refcounts; - } - if (local_got_refcounts[r_symndx] == 0) - { - sgot->size += 4; - if (info->shared) - { - /* If we are generating a shared object, we need to - output a R_68K_RELATIVE reloc so that the dynamic - linker can adjust this GOT entry. */ - srelgot->size += sizeof (Elf32_External_Rela); - } - } - local_got_refcounts[r_symndx]++; - } - break; - - case R_68K_PLT8: - case R_68K_PLT16: - case R_68K_PLT32: - /* This symbol requires a procedure linkage table entry. We - actually build the entry in adjust_dynamic_symbol, - because this might be a case of linking PIC code which is - never referenced by a dynamic object, in which case we - don't need to generate a procedure linkage table entry - after all. */ - - /* If this is a local symbol, we resolve it directly without - creating a procedure linkage table entry. */ - if (h == NULL) - continue; - - h->needs_plt = 1; - h->plt.refcount++; - break; - - case R_68K_PLT8O: - case R_68K_PLT16O: - case R_68K_PLT32O: - /* This symbol requires a procedure linkage table entry. */ - - if (h == NULL) - { - /* It does not make sense to have this relocation for a - local symbol. FIXME: does it? How to handle it if - it does make sense? */ - bfd_set_error (bfd_error_bad_value); - return FALSE; - } - - /* Make sure this symbol is output as a dynamic symbol. */ - if (h->dynindx == -1 - && !h->forced_local) - { - if (!bfd_elf_link_record_dynamic_symbol (info, h)) - return FALSE; - } - - h->needs_plt = 1; - h->plt.refcount++; - break; - - case R_68K_PC8: - case R_68K_PC16: - case R_68K_PC32: - /* If we are creating a shared library and this is not a local - symbol, we need to copy the reloc into the shared library. - However when linking with -Bsymbolic and this is a global - symbol which is defined in an object we are including in the - link (i.e., DEF_REGULAR is set), then we can resolve the - reloc directly. At this point we have not seen all the input - files, so it is possible that DEF_REGULAR is not set now but - will be set later (it is never cleared). We account for that - possibility below by storing information in the - pcrel_relocs_copied field of the hash table entry. */ - if (!(info->shared - && (sec->flags & SEC_ALLOC) != 0 - && h != NULL - && (!info->symbolic - || h->root.type == bfd_link_hash_defweak - || !h->def_regular))) - { - if (h != NULL) - { - /* Make sure a plt entry is created for this symbol if - it turns out to be a function defined by a dynamic - object. */ - h->plt.refcount++; - } - break; - } - /* Fall through. */ - case R_68K_8: - case R_68K_16: - case R_68K_32: - if (h != NULL) - { - /* Make sure a plt entry is created for this symbol if it - turns out to be a function defined by a dynamic object. */ - h->plt.refcount++; - } - - /* If we are creating a shared library, we need to copy the - reloc into the shared library. */ - if (info->shared - && (sec->flags & SEC_ALLOC) != 0) - { - /* When creating a shared object, we must copy these - reloc types into the output file. We create a reloc - section in dynobj and make room for this reloc. */ - if (sreloc == NULL) - { - const char *name; - - name = (bfd_elf_string_from_elf_section - (abfd, - elf_elfheader (abfd)->e_shstrndx, - elf_section_data (sec)->rel_hdr.sh_name)); - if (name == NULL) - return FALSE; - - BFD_ASSERT (strncmp (name, ".rela", 5) == 0 - && strcmp (bfd_get_section_name (abfd, sec), - name + 5) == 0); - - sreloc = bfd_get_section_by_name (dynobj, name); - if (sreloc == NULL) - { - sreloc = bfd_make_section_with_flags (dynobj, - name, - (SEC_ALLOC - | SEC_LOAD - | SEC_HAS_CONTENTS - | SEC_IN_MEMORY - | SEC_LINKER_CREATED - | SEC_READONLY)); - if (sreloc == NULL - || !bfd_set_section_alignment (dynobj, sreloc, 2)) - return FALSE; - } - elf_section_data (sec)->sreloc = sreloc; - } - - if (sec->flags & SEC_READONLY - /* Don't set DF_TEXTREL yet for PC relative - relocations, they might be discarded later. */ - && !(ELF32_R_TYPE (rel->r_info) == R_68K_PC8 - || ELF32_R_TYPE (rel->r_info) == R_68K_PC16 - || ELF32_R_TYPE (rel->r_info) == R_68K_PC32)) - info->flags |= DF_TEXTREL; - - sreloc->size += sizeof (Elf32_External_Rela); - - /* We count the number of PC relative relocations we have - entered for this symbol, so that we can discard them - again if, in the -Bsymbolic case, the symbol is later - defined by a regular object, or, in the normal shared - case, the symbol is forced to be local. Note that this - function is only called if we are using an m68kelf linker - hash table, which means that h is really a pointer to an - elf_m68k_link_hash_entry. */ - if (ELF32_R_TYPE (rel->r_info) == R_68K_PC8 - || ELF32_R_TYPE (rel->r_info) == R_68K_PC16 - || ELF32_R_TYPE (rel->r_info) == R_68K_PC32) - { - struct elf_m68k_pcrel_relocs_copied *p; - struct elf_m68k_pcrel_relocs_copied **head; - - if (h != NULL) - { - struct elf_m68k_link_hash_entry *eh - = elf_m68k_hash_entry (h); - head = &eh->pcrel_relocs_copied; - } - else - { - asection *s; - void *vpp; - - s = (bfd_section_from_r_symndx - (abfd, &elf_m68k_hash_table (info)->sym_sec, - sec, r_symndx)); - if (s == NULL) - return FALSE; - - vpp = &elf_section_data (s)->local_dynrel; - head = (struct elf_m68k_pcrel_relocs_copied **) vpp; - } - - for (p = *head; p != NULL; p = p->next) - if (p->section == sreloc) - break; - - if (p == NULL) - { - p = ((struct elf_m68k_pcrel_relocs_copied *) - bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); - if (p == NULL) - return FALSE; - p->next = *head; - *head = p; - p->section = sreloc; - p->count = 0; - } - - ++p->count; - } - } - - break; - - /* This relocation describes the C++ object vtable hierarchy. - Reconstruct it for later use during GC. */ - case R_68K_GNU_VTINHERIT: - if (!bfd_elf_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_68K_GNU_VTENTRY: - if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) - return FALSE; - break; - - default: - break; - } - } - - return TRUE; -} - -/* Return the section that should be marked against GC for a given - relocation. */ - -static asection * -elf_m68k_gc_mark_hook (sec, info, rel, h, sym) - asection *sec; - 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 (ELF32_R_TYPE (rel->r_info)) - { - case R_68K_GNU_VTINHERIT: - case R_68K_GNU_VTENTRY: - break; - - default: - switch (h->root.type) - { - default: - break; - - 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; - } - } - } - else - return bfd_section_from_elf_index (sec->owner, sym->st_shndx); - - return NULL; -} - -/* Update the got entry reference counts for the section being removed. */ - -static bfd_boolean -elf_m68k_gc_sweep_hook (abfd, info, sec, relocs) - bfd *abfd; - struct bfd_link_info *info; - asection *sec; - const Elf_Internal_Rela *relocs; -{ - Elf_Internal_Shdr *symtab_hdr; - struct elf_link_hash_entry **sym_hashes; - bfd_signed_vma *local_got_refcounts; - const Elf_Internal_Rela *rel, *relend; - bfd *dynobj; - asection *sgot; - asection *srelgot; - - dynobj = elf_hash_table (info)->dynobj; - if (dynobj == NULL) - return TRUE; - - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (abfd); - local_got_refcounts = elf_local_got_refcounts (abfd); - - sgot = bfd_get_section_by_name (dynobj, ".got"); - srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); - - relend = relocs + sec->reloc_count; - for (rel = relocs; rel < relend; rel++) - { - unsigned long r_symndx; - struct elf_link_hash_entry *h = NULL; - - r_symndx = ELF32_R_SYM (rel->r_info); - if (r_symndx >= symtab_hdr->sh_info) - { - h = sym_hashes[r_symndx - symtab_hdr->sh_info]; - while (h->root.type == bfd_link_hash_indirect - || h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - } - - switch (ELF32_R_TYPE (rel->r_info)) - { - case R_68K_GOT8: - case R_68K_GOT16: - case R_68K_GOT32: - case R_68K_GOT8O: - case R_68K_GOT16O: - case R_68K_GOT32O: - if (h != NULL) - { - if (h->got.refcount > 0) - { - --h->got.refcount; - if (h->got.refcount == 0) - { - /* We don't need the .got entry any more. */ - sgot->size -= 4; - srelgot->size -= sizeof (Elf32_External_Rela); - } - } - } - else if (local_got_refcounts != NULL) - { - if (local_got_refcounts[r_symndx] > 0) - { - --local_got_refcounts[r_symndx]; - if (local_got_refcounts[r_symndx] == 0) - { - /* We don't need the .got entry any more. */ - sgot->size -= 4; - if (info->shared) - srelgot->size -= sizeof (Elf32_External_Rela); - } - } - } - break; - - case R_68K_PLT8: - case R_68K_PLT16: - case R_68K_PLT32: - case R_68K_PLT8O: - case R_68K_PLT16O: - case R_68K_PLT32O: - case R_68K_PC8: - case R_68K_PC16: - case R_68K_PC32: - case R_68K_8: - case R_68K_16: - case R_68K_32: - if (h != NULL) - { - if (h->plt.refcount > 0) - --h->plt.refcount; - } - break; - - default: - break; - } - } - - return TRUE; -} - -/* Adjust a symbol defined by a dynamic object and referenced by a - regular object. The current definition is in some section of the - dynamic object, but we're not including those sections. We have to - change the definition to something the rest of the link can - understand. */ - -static bfd_boolean -elf_m68k_adjust_dynamic_symbol (info, h) - struct bfd_link_info *info; - struct elf_link_hash_entry *h; -{ - bfd *dynobj; - asection *s; - unsigned int power_of_two; - - dynobj = elf_hash_table (info)->dynobj; - - /* Make sure we know what is going on here. */ - BFD_ASSERT (dynobj != NULL - && (h->needs_plt - || h->u.weakdef != NULL - || (h->def_dynamic - && h->ref_regular - && !h->def_regular))); - - /* If this is a function, put it in the procedure linkage table. We - will fill in the contents of the procedure linkage table later, - when we know the address of the .got section. */ - if (h->type == STT_FUNC - || h->needs_plt) - { - if ((h->plt.refcount <= 0 - || SYMBOL_CALLS_LOCAL (info, h) - || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT - && h->root.type == bfd_link_hash_undefweak)) - /* We must always create the plt entry if it was referenced - by a PLTxxO relocation. In this case we already recorded - it as a dynamic symbol. */ - && h->dynindx == -1) - { - /* This case can occur if we saw a PLTxx reloc in an input - file, but the symbol was never referred to by a dynamic - object, or if all references were garbage collected. In - such a case, we don't actually need to build a procedure - linkage table, and we can just do a PCxx reloc instead. */ - h->plt.offset = (bfd_vma) -1; - h->needs_plt = 0; - return TRUE; - } - - /* Make sure this symbol is output as a dynamic symbol. */ - if (h->dynindx == -1 - && !h->forced_local) - { - if (! bfd_elf_link_record_dynamic_symbol (info, h)) - return FALSE; - } - - s = bfd_get_section_by_name (dynobj, ".plt"); - BFD_ASSERT (s != NULL); - - /* If this is the first .plt entry, make room for the special - first entry. */ - if (s->size == 0) - { - if (CPU32_FLAG (dynobj)) - s->size += PLT_CPU32_ENTRY_SIZE; - else if (CFV4E_FLAG (dynobj)) - s->size += CFV4E_PLT_ENTRY_SIZE; - else - s->size += PLT_ENTRY_SIZE; - } - - /* If this symbol is not defined in a regular file, and we are - not generating a shared library, then set the symbol to this - location in the .plt. This is required to make function - pointers compare as equal between the normal executable and - the shared library. */ - if (!info->shared - && !h->def_regular) - { - h->root.u.def.section = s; - h->root.u.def.value = s->size; - } - - h->plt.offset = s->size; - - /* Make room for this entry. */ - if (CPU32_FLAG (dynobj)) - s->size += PLT_CPU32_ENTRY_SIZE; - else if (CFV4E_FLAG (dynobj)) - s->size += CFV4E_PLT_ENTRY_SIZE; - else - s->size += PLT_ENTRY_SIZE; - - /* We also need to make an entry in the .got.plt section, which - will be placed in the .got section by the linker script. */ - s = bfd_get_section_by_name (dynobj, ".got.plt"); - BFD_ASSERT (s != NULL); - s->size += 4; - - /* We also need to make an entry in the .rela.plt section. */ - s = bfd_get_section_by_name (dynobj, ".rela.plt"); - BFD_ASSERT (s != NULL); - s->size += sizeof (Elf32_External_Rela); - - return TRUE; - } - - /* Reinitialize the plt offset now that it is not used as a reference - count any more. */ - h->plt.offset = (bfd_vma) -1; - - /* 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->u.weakdef != NULL) - { - BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined - || h->u.weakdef->root.type == bfd_link_hash_defweak); - h->root.u.def.section = h->u.weakdef->root.u.def.section; - h->root.u.def.value = h->u.weakdef->root.u.def.value; - return TRUE; - } - - /* This is a reference to a symbol defined by a dynamic object which - is not a function. */ - - /* If we are creating a shared library, we must presume that the - only references to the symbol are via the global offset table. - For such cases we need not do anything here; the relocations will - be handled correctly by relocate_section. */ - if (info->shared) - return TRUE; - - if (h->size == 0) - { - (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), - h->root.root.string); - return TRUE; - } - - /* We must allocate the symbol in our .dynbss section, which will - become part of the .bss section of the executable. There will be - an entry for this symbol in the .dynsym section. The dynamic - object will contain position independent code, so all references - from the dynamic object to this symbol will go through the global - offset table. The dynamic linker will use the .dynsym entry to - determine the address it must put in the global offset table, so - both the dynamic object and the regular object will refer to the - same memory location for the variable. */ - - s = bfd_get_section_by_name (dynobj, ".dynbss"); - BFD_ASSERT (s != NULL); - - /* We must generate a R_68K_COPY reloc to tell the dynamic linker to - copy the initial value out of the dynamic object and into the - runtime process image. We need to remember the offset into the - .rela.bss section we are going to use. */ - if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) - { - asection *srel; - - srel = bfd_get_section_by_name (dynobj, ".rela.bss"); - BFD_ASSERT (srel != NULL); - srel->size += sizeof (Elf32_External_Rela); - h->needs_copy = 1; - } - - /* We need to figure out the alignment required for this symbol. I - have no idea how ELF linkers handle this. */ - power_of_two = bfd_log2 (h->size); - if (power_of_two > 3) - power_of_two = 3; - - /* Apply the required alignment. */ - s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); - if (power_of_two > bfd_get_section_alignment (dynobj, s)) - { - if (!bfd_set_section_alignment (dynobj, s, power_of_two)) - return FALSE; - } - - /* Define the symbol as being at this point in the section. */ - h->root.u.def.section = s; - h->root.u.def.value = s->size; - - /* Increment the section size to make room for the symbol. */ - s->size += h->size; - - return TRUE; -} - -/* Set the sizes of the dynamic sections. */ - -static bfd_boolean -elf_m68k_size_dynamic_sections (output_bfd, info) - bfd *output_bfd ATTRIBUTE_UNUSED; - struct bfd_link_info *info; -{ - bfd *dynobj; - asection *s; - bfd_boolean plt; - bfd_boolean relocs; - - 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->executable) - { - s = bfd_get_section_by_name (dynobj, ".interp"); - BFD_ASSERT (s != NULL); - s->size = sizeof ELF_DYNAMIC_INTERPRETER; - s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; - } - } - else - { - /* We may have created entries in the .rela.got section. - However, if we are not creating the dynamic sections, we will - not actually use these entries. Reset the size of .rela.got, - which will cause it to get stripped from the output file - below. */ - s = bfd_get_section_by_name (dynobj, ".rela.got"); - if (s != NULL) - s->size = 0; - } - - /* If this is a -Bsymbolic shared link, then we need to discard all - PC relative relocs against symbols defined in a regular object. - For the normal shared case we discard the PC relative relocs - against symbols that have become local due to visibility changes. - We allocated space for them in the check_relocs routine, but we - will not fill them in in the relocate_section routine. */ - if (info->shared) - elf_link_hash_traverse (elf_hash_table (info), - elf_m68k_discard_copies, - (PTR) info); - - /* The check_relocs and adjust_dynamic_symbol entry points have - determined the sizes of the various dynamic sections. Allocate - memory for them. */ - plt = FALSE; - relocs = FALSE; - for (s = dynobj->sections; s != NULL; s = s->next) - { - const char *name; - - if ((s->flags & SEC_LINKER_CREATED) == 0) - continue; - - /* It's OK to base decisions on the section name, because none - of the dynobj section names depend upon the input files. */ - name = bfd_get_section_name (dynobj, s); - - if (strcmp (name, ".plt") == 0) - { - /* Remember whether there is a PLT. */ - plt = s->size != 0; - } - else if (strncmp (name, ".rela", 5) == 0) - { - if (s->size != 0) - { - relocs = TRUE; - - /* We use the reloc_count field as a counter if we need - to copy relocs into the output file. */ - s->reloc_count = 0; - } - } - else if (strncmp (name, ".got", 4) != 0 - && strcmp (name, ".dynbss") != 0) - { - /* It's not one of our sections, so don't allocate space. */ - continue; - } - - if (s->size == 0) - { - /* If we don't need this section, strip it from the - output file. This is mostly to handle .rela.bss and - .rela.plt. We must create both sections in - create_dynamic_sections, because they must be created - before the linker maps input sections to output - sections. The linker does that before - adjust_dynamic_symbol is called, and it is that - function which decides whether anything needs to go - into these sections. */ - s->flags |= SEC_EXCLUDE; - continue; - } - - if ((s->flags & SEC_HAS_CONTENTS) == 0) - continue; - - /* Allocate memory for the section contents. */ - /* FIXME: This should be a call to bfd_alloc not bfd_zalloc. - Unused entries should be reclaimed before the section's contents - are written out, but at the moment this does not happen. Thus in - order to prevent writing out garbage, we initialise the section's - contents to zero. */ - s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); - if (s->contents == NULL) - 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_m68k_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. */ -#define add_dynamic_entry(TAG, VAL) \ - _bfd_elf_add_dynamic_entry (info, TAG, VAL) - - if (!info->shared) - { - if (!add_dynamic_entry (DT_DEBUG, 0)) - return FALSE; - } - - if (plt) - { - if (!add_dynamic_entry (DT_PLTGOT, 0) - || !add_dynamic_entry (DT_PLTRELSZ, 0) - || !add_dynamic_entry (DT_PLTREL, DT_RELA) - || !add_dynamic_entry (DT_JMPREL, 0)) - return FALSE; - } - - if (relocs) - { - if (!add_dynamic_entry (DT_RELA, 0) - || !add_dynamic_entry (DT_RELASZ, 0) - || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) - return FALSE; - } - - if ((info->flags & DF_TEXTREL) != 0) - { - if (!add_dynamic_entry (DT_TEXTREL, 0)) - return FALSE; - } - } -#undef add_dynamic_entry - - return TRUE; -} - -/* This function is called via elf_link_hash_traverse if we are - creating a shared object. In the -Bsymbolic case it discards the - space allocated to copy PC relative relocs against symbols which - are defined in regular objects. For the normal shared case, it - discards space for pc-relative relocs that have become local due to - symbol visibility changes. We allocated space for them in the - check_relocs routine, but we won't fill them in in the - relocate_section routine. - - We also check whether any of the remaining relocations apply - against a readonly section, and set the DF_TEXTREL flag in this - case. */ - -static bfd_boolean -elf_m68k_discard_copies (h, inf) - struct elf_link_hash_entry *h; - PTR inf; -{ - struct bfd_link_info *info = (struct bfd_link_info *) inf; - struct elf_m68k_pcrel_relocs_copied *s; - - if (h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - - if (!h->def_regular - || (!info->symbolic - && !h->forced_local)) - { - if ((info->flags & DF_TEXTREL) == 0) - { - /* Look for relocations against read-only sections. */ - for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied; - s != NULL; - s = s->next) - if ((s->section->flags & SEC_READONLY) != 0) - { - info->flags |= DF_TEXTREL; - break; - } - } - - return TRUE; - } - - for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied; - s != NULL; - s = s->next) - s->section->size -= s->count * sizeof (Elf32_External_Rela); - - return TRUE; -} - -/* Relocate an M68K ELF section. */ - -static bfd_boolean -elf_m68k_relocate_section (output_bfd, info, input_bfd, input_section, - contents, relocs, local_syms, local_sections) - bfd *output_bfd; - struct bfd_link_info *info; - bfd *input_bfd; - asection *input_section; - bfd_byte *contents; - Elf_Internal_Rela *relocs; - Elf_Internal_Sym *local_syms; - asection **local_sections; -{ - bfd *dynobj; - Elf_Internal_Shdr *symtab_hdr; - struct elf_link_hash_entry **sym_hashes; - bfd_vma *local_got_offsets; - asection *sgot; - asection *splt; - asection *sreloc; - Elf_Internal_Rela *rel; - Elf_Internal_Rela *relend; - - if (info->relocatable) - return TRUE; - - dynobj = elf_hash_table (info)->dynobj; - symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (input_bfd); - local_got_offsets = elf_local_got_offsets (input_bfd); - - sgot = NULL; - splt = NULL; - sreloc = NULL; - - rel = relocs; - relend = relocs + input_section->reloc_count; - for (; rel < relend; rel++) - { - int r_type; - reloc_howto_type *howto; - unsigned long r_symndx; - struct elf_link_hash_entry *h; - Elf_Internal_Sym *sym; - asection *sec; - bfd_vma relocation; - bfd_boolean unresolved_reloc; - bfd_reloc_status_type r; - - r_type = ELF32_R_TYPE (rel->r_info); - if (r_type < 0 || r_type >= (int) R_68K_max) - { - bfd_set_error (bfd_error_bad_value); - return FALSE; - } - howto = howto_table + r_type; - - r_symndx = ELF32_R_SYM (rel->r_info); - - h = NULL; - sym = NULL; - sec = NULL; - unresolved_reloc = FALSE; - - if (r_symndx < symtab_hdr->sh_info) - { - sym = local_syms + r_symndx; - sec = local_sections[r_symndx]; - relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); - } - else - { - bfd_boolean warned; - - RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, - r_symndx, symtab_hdr, sym_hashes, - h, sec, relocation, - unresolved_reloc, warned); - } - - switch (r_type) - { - case R_68K_GOT8: - case R_68K_GOT16: - case R_68K_GOT32: - /* Relocation is to the address of the entry for this symbol - in the global offset table. */ - if (h != NULL - && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) - break; - /* Fall through. */ - case R_68K_GOT8O: - case R_68K_GOT16O: - case R_68K_GOT32O: - /* Relocation is the offset of the entry for this symbol in - the global offset table. */ - - { - bfd_vma off; - - if (sgot == NULL) - { - sgot = bfd_get_section_by_name (dynobj, ".got"); - BFD_ASSERT (sgot != NULL); - } - - if (h != NULL) - { - bfd_boolean dyn; - - off = h->got.offset; - BFD_ASSERT (off != (bfd_vma) -1); - - dyn = elf_hash_table (info)->dynamic_sections_created; - if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) - || (info->shared - && (info->symbolic - || h->dynindx == -1 - || h->forced_local) - && h->def_regular)) - { - /* This is actually a static link, or it is a - -Bsymbolic link and the symbol is defined - locally, or the symbol was forced to be local - because of a version file.. We must initialize - this entry in the global offset table. Since - the offset must always be a multiple of 4, we - use the least significant bit to record whether - we have initialized it already. - - When doing a dynamic link, we create a .rela.got - relocation entry to initialize the value. This - is done in the finish_dynamic_symbol routine. */ - if ((off & 1) != 0) - off &= ~1; - else - { - bfd_put_32 (output_bfd, relocation, - sgot->contents + off); - h->got.offset |= 1; - } - } - else - unresolved_reloc = FALSE; - } - else - { - BFD_ASSERT (local_got_offsets != NULL - && local_got_offsets[r_symndx] != (bfd_vma) -1); - - off = local_got_offsets[r_symndx]; - - /* The offset must always be a multiple of 4. We use - the least significant bit to record whether we have - already generated the necessary reloc. */ - if ((off & 1) != 0) - off &= ~1; - else - { - bfd_put_32 (output_bfd, relocation, sgot->contents + off); - - if (info->shared) - { - asection *s; - Elf_Internal_Rela outrel; - bfd_byte *loc; - - s = bfd_get_section_by_name (dynobj, ".rela.got"); - BFD_ASSERT (s != NULL); - - outrel.r_offset = (sgot->output_section->vma - + sgot->output_offset - + off); - outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); - outrel.r_addend = relocation; - loc = s->contents; - loc += s->reloc_count++ * sizeof (Elf32_External_Rela); - bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); - } - - local_got_offsets[r_symndx] |= 1; - } - } - - relocation = sgot->output_offset + off; - if (r_type == R_68K_GOT8O - || r_type == R_68K_GOT16O - || r_type == R_68K_GOT32O) - { - /* This relocation does not use the addend. */ - rel->r_addend = 0; - } - else - relocation += sgot->output_section->vma; - } - break; - - case R_68K_PLT8: - case R_68K_PLT16: - case R_68K_PLT32: - /* Relocation is to the entry for this symbol in the - procedure linkage table. */ - - /* Resolve a PLTxx reloc against a local symbol directly, - without using the procedure linkage table. */ - if (h == NULL) - break; - - if (h->plt.offset == (bfd_vma) -1 - || !elf_hash_table (info)->dynamic_sections_created) - { - /* We didn't make a PLT entry for this symbol. This - happens when statically linking PIC code, or when - using -Bsymbolic. */ - break; - } - - if (splt == NULL) - { - splt = bfd_get_section_by_name (dynobj, ".plt"); - BFD_ASSERT (splt != NULL); - } - - relocation = (splt->output_section->vma - + splt->output_offset - + h->plt.offset); - unresolved_reloc = FALSE; - break; - - case R_68K_PLT8O: - case R_68K_PLT16O: - case R_68K_PLT32O: - /* Relocation is the offset of the entry for this symbol in - the procedure linkage table. */ - BFD_ASSERT (h != NULL && h->plt.offset != (bfd_vma) -1); - - if (splt == NULL) - { - splt = bfd_get_section_by_name (dynobj, ".plt"); - BFD_ASSERT (splt != NULL); - } - - relocation = h->plt.offset; - unresolved_reloc = FALSE; - - /* This relocation does not use the addend. */ - rel->r_addend = 0; - - break; - - case R_68K_PC8: - case R_68K_PC16: - case R_68K_PC32: - if (h == NULL - || (info->shared - && h->forced_local)) - break; - /* Fall through. */ - case R_68K_8: - case R_68K_16: - case R_68K_32: - if (info->shared - && r_symndx != 0 - && (input_section->flags & SEC_ALLOC) != 0 - && (h == NULL - || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT - || h->root.type != bfd_link_hash_undefweak) - && ((r_type != R_68K_PC8 - && r_type != R_68K_PC16 - && r_type != R_68K_PC32) - || (h != NULL - && h->dynindx != -1 - && (!info->symbolic - || !h->def_regular)))) - { - Elf_Internal_Rela outrel; - bfd_byte *loc; - bfd_boolean skip, relocate; - - /* When generating a shared object, these relocations - are copied into the output file to be resolved at run - time. */ - - skip = FALSE; - relocate = FALSE; - - outrel.r_offset = - _bfd_elf_section_offset (output_bfd, info, input_section, - rel->r_offset); - if (outrel.r_offset == (bfd_vma) -1) - skip = TRUE; - else if (outrel.r_offset == (bfd_vma) -2) - skip = TRUE, relocate = TRUE; - outrel.r_offset += (input_section->output_section->vma - + input_section->output_offset); - - if (skip) - memset (&outrel, 0, sizeof outrel); - else if (h != NULL - && h->dynindx != -1 - && (r_type == R_68K_PC8 - || r_type == R_68K_PC16 - || r_type == R_68K_PC32 - || !info->shared - || !info->symbolic - || !h->def_regular)) - { - outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); - outrel.r_addend = rel->r_addend; - } - else - { - /* This symbol is local, or marked to become local. */ - if (r_type == R_68K_32) - { - relocate = TRUE; - outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); - outrel.r_addend = relocation + rel->r_addend; - } - else - { - long indx; - - if (bfd_is_abs_section (sec)) - indx = 0; - else if (sec == NULL || sec->owner == NULL) - { - bfd_set_error (bfd_error_bad_value); - return FALSE; - } - else - { - asection *osec; - - osec = sec->output_section; - indx = elf_section_data (osec)->dynindx; - BFD_ASSERT (indx > 0); - } - - outrel.r_info = ELF32_R_INFO (indx, r_type); - outrel.r_addend = relocation + rel->r_addend; - } - } - - sreloc = elf_section_data (input_section)->sreloc; - if (sreloc == NULL) - abort (); - - loc = sreloc->contents; - loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); - bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); - - /* This reloc will be computed at runtime, so there's no - need to do anything now, except for R_68K_32 - relocations that have been turned into - R_68K_RELATIVE. */ - if (!relocate) - continue; - } - - break; - - case R_68K_GNU_VTINHERIT: - case R_68K_GNU_VTENTRY: - /* These are no-ops in the end. */ - continue; - - default: - break; - } - - /* Dynamic relocs are not propagated for SEC_DEBUGGING sections - because such sections are not SEC_ALLOC and thus ld.so will - not process them. */ - if (unresolved_reloc - && !((input_section->flags & SEC_DEBUGGING) != 0 - && h->def_dynamic)) - { - (*_bfd_error_handler) - (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), - input_bfd, - input_section, - (long) rel->r_offset, - howto->name, - h->root.root.string); - return FALSE; - } - - r = _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, - relocation, rel->r_addend); - - if (r != bfd_reloc_ok) - { - const char *name; - - if (h != NULL) - name = h->root.root.string; - else - { - name = bfd_elf_string_from_elf_section (input_bfd, - symtab_hdr->sh_link, - sym->st_name); - if (name == NULL) - return FALSE; - if (*name == '\0') - name = bfd_section_name (input_bfd, sec); - } - - if (r == bfd_reloc_overflow) - { - if (!(info->callbacks->reloc_overflow - (info, (h ? &h->root : NULL), name, howto->name, - (bfd_vma) 0, input_bfd, input_section, - rel->r_offset))) - return FALSE; - } - else - { - (*_bfd_error_handler) - (_("%B(%A+0x%lx): reloc against `%s': error %d"), - input_bfd, input_section, - (long) rel->r_offset, name, (int) r); - return FALSE; - } - } - } - - return TRUE; -} - -/* Finish up dynamic symbol handling. We set the contents of various - dynamic sections here. */ - -static bfd_boolean -elf_m68k_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; - int plt_off1, plt_off2, plt_off3; - - dynobj = elf_hash_table (info)->dynobj; - - if (h->plt.offset != (bfd_vma) -1) - { - asection *splt; - asection *sgot; - asection *srela; - bfd_vma plt_index; - bfd_vma got_offset; - Elf_Internal_Rela rela; - bfd_byte *loc; - - /* This symbol has an entry in the procedure linkage table. Set - it up. */ - - BFD_ASSERT (h->dynindx != -1); - - splt = bfd_get_section_by_name (dynobj, ".plt"); - sgot = bfd_get_section_by_name (dynobj, ".got.plt"); - srela = bfd_get_section_by_name (dynobj, ".rela.plt"); - BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); - - /* Get the index in the procedure linkage table which - corresponds to this symbol. This is the index of this symbol - in all the symbols for which we are making plt entries. The - first entry in the procedure linkage table is reserved. */ - if (CPU32_FLAG (output_bfd)) - plt_index = (h->plt.offset / PLT_CPU32_ENTRY_SIZE) - 1; - else if (CFV4E_FLAG (output_bfd)) - plt_index = (h->plt.offset / CFV4E_PLT_ENTRY_SIZE) - 1; - else - plt_index = (h->plt.offset / PLT_ENTRY_SIZE) - 1; - - /* Get the offset into the .got table of the entry that - corresponds to this function. Each .got entry is 4 bytes. - The first three are reserved. */ - got_offset = (plt_index + 3) * 4; - - if (CPU32_FLAG (output_bfd)) - { - /* Fill in the entry in the procedure linkage table. */ - memcpy (splt->contents + h->plt.offset, elf_cpu32_plt_entry, - PLT_CPU32_ENTRY_SIZE); - plt_off1 = 4; - plt_off2 = 12; - plt_off3 = 18; - } - else if (CFV4E_FLAG (output_bfd)) - { - memcpy (splt->contents + h->plt.offset, elf_cfv4e_plt_entry, - CFV4E_PLT_ENTRY_SIZE); - plt_off1 = 2; - plt_off2 = 14; - plt_off3 = 20; - } - else - { - /* Fill in the entry in the procedure linkage table. */ - memcpy (splt->contents + h->plt.offset, elf_m68k_plt_entry, - PLT_ENTRY_SIZE); - plt_off1 = 4; - plt_off2 = 10; - plt_off3 = 16; - } - - /* The offset is relative to the first extension word. */ - bfd_put_32 (output_bfd, - sgot->output_section->vma - + sgot->output_offset - + got_offset - - (splt->output_section->vma - + h->plt.offset - + (CFV4E_FLAG (output_bfd) ? 8 : 2)), - splt->contents + h->plt.offset + plt_off1); - - bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), - splt->contents + h->plt.offset + plt_off2); - bfd_put_32 (output_bfd, - (h->plt.offset + plt_off3), - splt->contents + h->plt.offset + plt_off3); - - /* Fill in the entry in the global offset table. */ - bfd_put_32 (output_bfd, - (splt->output_section->vma - + splt->output_offset - + h->plt.offset - + (CFV4E_FLAG (output_bfd) ? 12 : 8)), - sgot->contents + got_offset); - - /* Fill in the entry in the .rela.plt section. */ - rela.r_offset = (sgot->output_section->vma - + sgot->output_offset - + got_offset); - rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_JMP_SLOT); - rela.r_addend = 0; - loc = srela->contents + plt_index * sizeof (Elf32_External_Rela); - bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); - - if (!h->def_regular) - { - /* Mark the symbol as undefined, rather than as defined in - the .plt section. Leave the value alone. */ - sym->st_shndx = SHN_UNDEF; - } - } - - if (h->got.offset != (bfd_vma) -1) - { - asection *sgot; - asection *srela; - Elf_Internal_Rela rela; - bfd_byte *loc; - - /* This symbol has an entry in the global offset table. Set it - up. */ - - sgot = bfd_get_section_by_name (dynobj, ".got"); - srela = bfd_get_section_by_name (dynobj, ".rela.got"); - BFD_ASSERT (sgot != NULL && srela != NULL); - - rela.r_offset = (sgot->output_section->vma - + sgot->output_offset - + (h->got.offset &~ (bfd_vma) 1)); - - /* If this is a -Bsymbolic link, and the symbol is defined - locally, we just want to emit a RELATIVE reloc. Likewise if - the symbol was forced to be local because of a version file. - The entry in the global offset table will already have been - initialized in the relocate_section function. */ - if (info->shared - && (info->symbolic - || h->dynindx == -1 - || h->forced_local) - && h->def_regular) - { - rela.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); - rela.r_addend = bfd_get_signed_32 (output_bfd, - (sgot->contents - + (h->got.offset &~ (bfd_vma) 1))); - } - else - { - bfd_put_32 (output_bfd, (bfd_vma) 0, - sgot->contents + (h->got.offset &~ (bfd_vma) 1)); - rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_GLOB_DAT); - rela.r_addend = 0; - } - - loc = srela->contents; - loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); - bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); - } - - if (h->needs_copy) - { - asection *s; - Elf_Internal_Rela rela; - bfd_byte *loc; - - /* This symbol needs a copy reloc. Set it up. */ - - BFD_ASSERT (h->dynindx != -1 - && (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak)); - - s = bfd_get_section_by_name (h->root.u.def.section->owner, - ".rela.bss"); - BFD_ASSERT (s != NULL); - - rela.r_offset = (h->root.u.def.value - + h->root.u.def.section->output_section->vma - + h->root.u.def.section->output_offset); - rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_COPY); - rela.r_addend = 0; - loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); - bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); - } - - /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ - if (strcmp (h->root.root.string, "_DYNAMIC") == 0 - || h == elf_hash_table (info)->hgot) - sym->st_shndx = SHN_ABS; - - return TRUE; -} - -/* Finish up the dynamic sections. */ - -static bfd_boolean -elf_m68k_finish_dynamic_sections (output_bfd, info) - bfd *output_bfd; - struct bfd_link_info *info; -{ - bfd *dynobj; - asection *sgot; - asection *sdyn; - - dynobj = elf_hash_table (info)->dynobj; - - sgot = bfd_get_section_by_name (dynobj, ".got.plt"); - BFD_ASSERT (sgot != NULL); - sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); - - if (elf_hash_table (info)->dynamic_sections_created) - { - asection *splt; - Elf32_External_Dyn *dyncon, *dynconend; - - splt = bfd_get_section_by_name (dynobj, ".plt"); - BFD_ASSERT (splt != NULL && sdyn != NULL); - - dyncon = (Elf32_External_Dyn *) sdyn->contents; - dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); - for (; dyncon < dynconend; dyncon++) - { - Elf_Internal_Dyn dyn; - const char *name; - asection *s; - - bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); - - switch (dyn.d_tag) - { - default: - break; - - case DT_PLTGOT: - name = ".got"; - goto get_vma; - case DT_JMPREL: - name = ".rela.plt"; - get_vma: - s = bfd_get_section_by_name (output_bfd, name); - BFD_ASSERT (s != NULL); - dyn.d_un.d_ptr = s->vma; - bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); - break; - - case DT_PLTRELSZ: - s = bfd_get_section_by_name (output_bfd, ".rela.plt"); - BFD_ASSERT (s != NULL); - dyn.d_un.d_val = s->size; - bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); - break; - - case DT_RELASZ: - /* The procedure linkage table relocs (DT_JMPREL) should - not be included in the overall relocs (DT_RELA). - Therefore, we override the DT_RELASZ entry here to - make it not include the JMPREL relocs. Since the - linker script arranges for .rela.plt to follow all - other relocation sections, we don't have to worry - about changing the DT_RELA entry. */ - s = bfd_get_section_by_name (output_bfd, ".rela.plt"); - if (s != NULL) - dyn.d_un.d_val -= s->size; - bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); - break; - } - } - - /* Fill in the first entry in the procedure linkage table. */ - if (splt->size > 0) - { - if (CFV4E_FLAG (output_bfd)) - { - memcpy (splt->contents, elf_cfv4e_plt0_entry, CFV4E_PLT_ENTRY_SIZE); - bfd_put_32 (output_bfd, - (sgot->output_section->vma - + sgot->output_offset + 4 - - (splt->output_section->vma + 2)), - splt->contents + 2); - bfd_put_32 (output_bfd, - (sgot->output_section->vma - + sgot->output_offset + 8 - - (splt->output_section->vma + 10) - 8), - splt->contents + 12); - elf_section_data (splt->output_section)->this_hdr.sh_entsize - = CFV4E_PLT_ENTRY_SIZE; - } - else if (CPU32_FLAG (output_bfd)) - { - memcpy (splt->contents, elf_cpu32_plt0_entry, PLT_CPU32_ENTRY_SIZE); - bfd_put_32 (output_bfd, - (sgot->output_section->vma - + sgot->output_offset + 4 - - (splt->output_section->vma + 2)), - splt->contents + 4); - bfd_put_32 (output_bfd, - (sgot->output_section->vma - + sgot->output_offset + 8 - - (splt->output_section->vma + 10)), - splt->contents + 12); - elf_section_data (splt->output_section)->this_hdr.sh_entsize - = PLT_CPU32_ENTRY_SIZE; - } - else - { - memcpy (splt->contents, elf_m68k_plt0_entry, PLT_ENTRY_SIZE); - bfd_put_32 (output_bfd, - (sgot->output_section->vma - + sgot->output_offset + 4 - - (splt->output_section->vma + 2)), - splt->contents + 4); - bfd_put_32 (output_bfd, - (sgot->output_section->vma - + sgot->output_offset + 8 - - (splt->output_section->vma + 10)), - splt->contents + 12); - elf_section_data (splt->output_section)->this_hdr.sh_entsize - = PLT_ENTRY_SIZE; - } - } - } - - /* Fill in the first three entries in the global offset table. */ - if (sgot->size > 0) - { - if (sdyn == NULL) - bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); - else - bfd_put_32 (output_bfd, - sdyn->output_section->vma + sdyn->output_offset, - sgot->contents); - bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); - bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); - } - - elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; - - return TRUE; -} - -/* Given a .data section and a .emreloc in-memory section, store - relocation information into the .emreloc section which can be - used at runtime to relocate the section. This is called by the - linker when the --embedded-relocs switch is used. This is called - after the add_symbols entry point has been called for all the - objects, and before the final_link entry point is called. */ - -bfd_boolean -bfd_m68k_elf32_create_embedded_relocs (abfd, info, datasec, relsec, errmsg) - bfd *abfd; - struct bfd_link_info *info; - asection *datasec; - asection *relsec; - char **errmsg; -{ - Elf_Internal_Shdr *symtab_hdr; - Elf_Internal_Sym *isymbuf = NULL; - Elf_Internal_Rela *internal_relocs = NULL; - Elf_Internal_Rela *irel, *irelend; - bfd_byte *p; - bfd_size_type amt; - - BFD_ASSERT (! info->relocatable); - - *errmsg = NULL; - - if (datasec->reloc_count == 0) - return TRUE; - - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - - /* Get a copy of the native relocations. */ - internal_relocs = (_bfd_elf_link_read_relocs - (abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL, - info->keep_memory)); - if (internal_relocs == NULL) - goto error_return; - - amt = (bfd_size_type) datasec->reloc_count * 12; - relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt); - if (relsec->contents == NULL) - goto error_return; - - p = relsec->contents; - - irelend = internal_relocs + datasec->reloc_count; - for (irel = internal_relocs; irel < irelend; irel++, p += 12) - { - asection *targetsec; - - /* We are going to write a four byte longword into the runtime - reloc section. The longword will be the address in the data - section which must be relocated. It is followed by the name - of the target section NUL-padded or truncated to 8 - characters. */ - - /* We can only relocate absolute longword relocs at run time. */ - if (ELF32_R_TYPE (irel->r_info) != (int) R_68K_32) - { - *errmsg = _("unsupported reloc type"); - bfd_set_error (bfd_error_bad_value); - goto error_return; - } - - /* Get the target section referred to by the reloc. */ - if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) - { - /* A local symbol. */ - Elf_Internal_Sym *isym; - - /* Read this BFD's local symbols if we haven't done so already. */ - if (isymbuf == NULL) - { - isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; - if (isymbuf == NULL) - isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, - symtab_hdr->sh_info, 0, - NULL, NULL, NULL); - if (isymbuf == NULL) - goto error_return; - } - - isym = isymbuf + ELF32_R_SYM (irel->r_info); - targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx); - } - else - { - unsigned long indx; - struct elf_link_hash_entry *h; - - /* An external symbol. */ - indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; - h = elf_sym_hashes (abfd)[indx]; - BFD_ASSERT (h != NULL); - if (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - targetsec = h->root.u.def.section; - else - targetsec = NULL; - } - - bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p); - memset (p + 4, 0, 8); - if (targetsec != NULL) - strncpy ((char *) p + 4, targetsec->output_section->name, 8); - } - - if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) - free (isymbuf); - if (internal_relocs != NULL - && elf_section_data (datasec)->relocs != internal_relocs) - free (internal_relocs); - return TRUE; - -error_return: - if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) - free (isymbuf); - if (internal_relocs != NULL - && elf_section_data (datasec)->relocs != internal_relocs) - free (internal_relocs); - return FALSE; -} - -static enum elf_reloc_type_class -elf32_m68k_reloc_type_class (rela) - const Elf_Internal_Rela *rela; -{ - switch ((int) ELF32_R_TYPE (rela->r_info)) - { - case R_68K_RELATIVE: - return reloc_class_relative; - case R_68K_JMP_SLOT: - return reloc_class_plt; - case R_68K_COPY: - return reloc_class_copy; - default: - return reloc_class_normal; - } -} - -/* Return address for Ith PLT stub in section PLT, for relocation REL - or (bfd_vma) -1 if it should not be included. */ - -static bfd_vma -elf_m68k_plt_sym_val (bfd_vma i, const asection *plt, - const arelent *rel ATTRIBUTE_UNUSED) -{ - if (CPU32_FLAG (plt->owner)) - return plt->vma + (i + 1) * PLT_CPU32_ENTRY_SIZE; - return plt->vma + (i + 1) * PLT_ENTRY_SIZE; -} - -#define TARGET_BIG_SYM bfd_elf32_m68k_vec -#define TARGET_BIG_NAME "elf32-m68k" -#define ELF_MACHINE_CODE EM_68K -#define ELF_MAXPAGESIZE 0x2000 -#define elf_backend_create_dynamic_sections \ - _bfd_elf_create_dynamic_sections -#define bfd_elf32_bfd_link_hash_table_create \ - elf_m68k_link_hash_table_create -#define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link - -#define elf_backend_check_relocs elf_m68k_check_relocs -#define elf_backend_adjust_dynamic_symbol \ - elf_m68k_adjust_dynamic_symbol -#define elf_backend_size_dynamic_sections \ - elf_m68k_size_dynamic_sections -#define elf_backend_relocate_section elf_m68k_relocate_section -#define elf_backend_finish_dynamic_symbol \ - elf_m68k_finish_dynamic_symbol -#define elf_backend_finish_dynamic_sections \ - elf_m68k_finish_dynamic_sections -#define elf_backend_gc_mark_hook elf_m68k_gc_mark_hook -#define elf_backend_gc_sweep_hook elf_m68k_gc_sweep_hook -#define bfd_elf32_bfd_merge_private_bfd_data \ - elf32_m68k_merge_private_bfd_data -#define bfd_elf32_bfd_set_private_flags \ - elf32_m68k_set_private_flags -#define bfd_elf32_bfd_print_private_bfd_data \ - elf32_m68k_print_private_bfd_data -#define elf_backend_reloc_type_class elf32_m68k_reloc_type_class -#define elf_backend_plt_sym_val elf_m68k_plt_sym_val -#define elf_backend_object_p elf32_m68k_object_p - -#define elf_backend_can_gc_sections 1 -#define elf_backend_can_refcount 1 -#define elf_backend_want_got_plt 1 -#define elf_backend_plt_readonly 1 -#define elf_backend_want_plt_sym 0 -#define elf_backend_got_header_size 12 -#define elf_backend_rela_normal 1 - -#include "elf32-target.h" |