-/* X86-64 specific support for 64-bit ELF
+/* X86-64 specific support for ELF
Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
- 2010 Free Software Foundation, Inc.
+ 2010, 2011, 2012
+ Free Software Foundation, Inc.
Contributed by Jan Hubicka <jh@suse.cz>.
This file is part of BFD, the Binary File Descriptor library.
#include "bfdlink.h"
#include "libbfd.h"
#include "elf-bfd.h"
+#include "elf-nacl.h"
#include "bfd_stdint.h"
#include "objalloc.h"
#include "hashtab.h"
+#include "dwarf2.h"
+#include "libiberty.h"
#include "elf/x86-64.h"
+#ifdef CORE_HEADER
+#include <stdarg.h>
+#include CORE_HEADER
+#endif
+
/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
#define MINUS_ONE (~ (bfd_vma) 0)
+/* Since both 32-bit and 64-bit x86-64 encode relocation type in the
+ identical manner, we use ELF32_R_TYPE instead of ELF64_R_TYPE to get
+ relocation type. We also use ELF_ST_TYPE instead of ELF64_ST_TYPE
+ since they are the same. */
+
+#define ABI_64_P(abfd) \
+ (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64)
+
/* The relocation "howto" table. Order of fields:
type, rightshift, size, bitsize, pc_relative, bitpos, complain_on_overflow,
special_function, name, partial_inplace, src_mask, dst_mask, pcrel_offset. */
HOWTO(R_X86_64_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_X86_64_IRELATIVE", FALSE, MINUS_ONE,
MINUS_ONE, FALSE),
+ HOWTO(R_X86_64_RELATIVE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_X86_64_RELATIVE64", FALSE, MINUS_ONE,
+ MINUS_ONE, FALSE),
/* We have a gap in the reloc numbers here.
R_X86_64_standard counts the number up to this point, and
/* GNU extension to record C++ vtable member usage. */
HOWTO (R_X86_64_GNU_VTENTRY, 0, 4, 0, FALSE, 0, complain_overflow_dont,
_bfd_elf_rel_vtable_reloc_fn, "R_X86_64_GNU_VTENTRY", FALSE, 0, 0,
- FALSE)
+ FALSE),
+
+/* Use complain_overflow_bitfield on R_X86_64_32 for x32. */
+ HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff,
+ FALSE)
};
#define IS_X86_64_PCREL_TYPE(TYPE) \
};
static reloc_howto_type *
-elf64_x86_64_rtype_to_howto (bfd *abfd, unsigned r_type)
+elf_x86_64_rtype_to_howto (bfd *abfd, unsigned r_type)
{
unsigned i;
- if (r_type < (unsigned int) R_X86_64_GNU_VTINHERIT
- || r_type >= (unsigned int) R_X86_64_max)
+ if (r_type == (unsigned int) R_X86_64_32)
+ {
+ if (ABI_64_P (abfd))
+ i = r_type;
+ else
+ i = ARRAY_SIZE (x86_64_elf_howto_table) - 1;
+ }
+ else if (r_type < (unsigned int) R_X86_64_GNU_VTINHERIT
+ || r_type >= (unsigned int) R_X86_64_max)
{
if (r_type >= (unsigned int) R_X86_64_standard)
{
/* Given a BFD reloc type, return a HOWTO structure. */
static reloc_howto_type *
-elf64_x86_64_reloc_type_lookup (bfd *abfd,
- bfd_reloc_code_real_type code)
+elf_x86_64_reloc_type_lookup (bfd *abfd,
+ bfd_reloc_code_real_type code)
{
unsigned int i;
i++)
{
if (x86_64_reloc_map[i].bfd_reloc_val == code)
- return elf64_x86_64_rtype_to_howto (abfd,
- x86_64_reloc_map[i].elf_reloc_val);
+ return elf_x86_64_rtype_to_howto (abfd,
+ x86_64_reloc_map[i].elf_reloc_val);
}
return 0;
}
static reloc_howto_type *
-elf64_x86_64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
- const char *r_name)
+elf_x86_64_reloc_name_lookup (bfd *abfd,
+ const char *r_name)
{
unsigned int i;
- for (i = 0;
- i < (sizeof (x86_64_elf_howto_table)
- / sizeof (x86_64_elf_howto_table[0]));
- i++)
+ if (!ABI_64_P (abfd) && strcasecmp (r_name, "R_X86_64_32") == 0)
+ {
+ /* Get x32 R_X86_64_32. */
+ reloc_howto_type *reloc
+ = &x86_64_elf_howto_table[ARRAY_SIZE (x86_64_elf_howto_table) - 1];
+ BFD_ASSERT (reloc->type == (unsigned int) R_X86_64_32);
+ return reloc;
+ }
+
+ for (i = 0; i < ARRAY_SIZE (x86_64_elf_howto_table); i++)
if (x86_64_elf_howto_table[i].name != NULL
&& strcasecmp (x86_64_elf_howto_table[i].name, r_name) == 0)
return &x86_64_elf_howto_table[i];
/* Given an x86_64 ELF reloc type, fill in an arelent structure. */
static void
-elf64_x86_64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
- Elf_Internal_Rela *dst)
+elf_x86_64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
+ Elf_Internal_Rela *dst)
{
unsigned r_type;
- r_type = ELF64_R_TYPE (dst->r_info);
- cache_ptr->howto = elf64_x86_64_rtype_to_howto (abfd, r_type);
+ r_type = ELF32_R_TYPE (dst->r_info);
+ cache_ptr->howto = elf_x86_64_rtype_to_howto (abfd, r_type);
BFD_ASSERT (r_type == cache_ptr->howto->type);
}
\f
/* Support for core dump NOTE sections. */
static bfd_boolean
-elf64_x86_64_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
+elf_x86_64_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
{
int offset;
size_t size;
default:
return FALSE;
+ case 296: /* sizeof(istruct elf_prstatus) on Linux/x32 */
+ /* pr_cursig */
+ elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
+
+ /* pr_pid */
+ elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24);
+
+ /* pr_reg */
+ offset = 72;
+ size = 216;
+
+ break;
+
case 336: /* sizeof(istruct elf_prstatus) on Linux/x86_64 */
/* pr_cursig */
elf_tdata (abfd)->core_signal
}
static bfd_boolean
-elf64_x86_64_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
+elf_x86_64_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
{
switch (note->descsz)
{
default:
return FALSE;
+ case 124: /* sizeof(struct elf_prpsinfo) on Linux/x32 */
+ elf_tdata (abfd)->core_pid
+ = bfd_get_32 (abfd, note->descdata + 12);
+ elf_tdata (abfd)->core_program
+ = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
+ elf_tdata (abfd)->core_command
+ = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
+ break;
+
case 136: /* sizeof(struct elf_prpsinfo) on Linux/x86_64 */
elf_tdata (abfd)->core_pid
= bfd_get_32 (abfd, note->descdata + 24);
return TRUE;
}
+
+#ifdef CORE_HEADER
+static char *
+elf_x86_64_write_core_note (bfd *abfd, char *buf, int *bufsiz,
+ int note_type, ...)
+{
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ va_list ap;
+ const char *fname, *psargs;
+ long pid;
+ int cursig;
+ const void *gregs;
+
+ switch (note_type)
+ {
+ default:
+ return NULL;
+
+ case NT_PRPSINFO:
+ va_start (ap, note_type);
+ fname = va_arg (ap, const char *);
+ psargs = va_arg (ap, const char *);
+ va_end (ap);
+
+ if (bed->s->elfclass == ELFCLASS32)
+ {
+ prpsinfo32_t data;
+ memset (&data, 0, sizeof (data));
+ strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
+ strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
+ return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
+ &data, sizeof (data));
+ }
+ else
+ {
+ prpsinfo_t data;
+ memset (&data, 0, sizeof (data));
+ strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
+ strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
+ return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
+ &data, sizeof (data));
+ }
+ /* NOTREACHED */
+
+ case NT_PRSTATUS:
+ va_start (ap, note_type);
+ pid = va_arg (ap, long);
+ cursig = va_arg (ap, int);
+ gregs = va_arg (ap, const void *);
+ va_end (ap);
+
+ if (bed->s->elfclass == ELFCLASS32)
+ {
+ if (bed->elf_machine_code == EM_X86_64)
+ {
+ prstatusx32_t prstat;
+ memset (&prstat, 0, sizeof (prstat));
+ prstat.pr_pid = pid;
+ prstat.pr_cursig = cursig;
+ memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
+ return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
+ &prstat, sizeof (prstat));
+ }
+ else
+ {
+ prstatus32_t prstat;
+ memset (&prstat, 0, sizeof (prstat));
+ prstat.pr_pid = pid;
+ prstat.pr_cursig = cursig;
+ memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
+ return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
+ &prstat, sizeof (prstat));
+ }
+ }
+ else
+ {
+ prstatus_t prstat;
+ memset (&prstat, 0, sizeof (prstat));
+ prstat.pr_pid = pid;
+ prstat.pr_cursig = cursig;
+ memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
+ return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
+ &prstat, sizeof (prstat));
+ }
+ }
+ /* NOTREACHED */
+}
+#endif
\f
/* Functions for the x86-64 ELF linker. */
/* The name of the dynamic interpreter. This is put in the .interp
section. */
-#define ELF_DYNAMIC_INTERPRETER "/lib/ld64.so.1"
+#define ELF64_DYNAMIC_INTERPRETER "/lib/ld64.so.1"
+#define ELF32_DYNAMIC_INTERPRETER "/lib/ldx32.so.1"
/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
copying dynamic variables from a shared lib into an app's dynbss
/* The first entry in a procedure linkage table looks like this. See the
SVR4 ABI i386 supplement and the x86-64 ABI to see how this works. */
-static const bfd_byte elf64_x86_64_plt0_entry[PLT_ENTRY_SIZE] =
+static const bfd_byte elf_x86_64_plt0_entry[PLT_ENTRY_SIZE] =
{
0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
0xff, 0x25, 16, 0, 0, 0, /* jmpq *GOT+16(%rip) */
/* Subsequent entries in a procedure linkage table look like this. */
-static const bfd_byte elf64_x86_64_plt_entry[PLT_ENTRY_SIZE] =
+static const bfd_byte elf_x86_64_plt_entry[PLT_ENTRY_SIZE] =
{
0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
0, 0, 0, 0 /* replaced with offset to start of .plt0. */
};
+/* .eh_frame covering the .plt section. */
+
+static const bfd_byte elf_x86_64_eh_frame_plt[] =
+{
+#define PLT_CIE_LENGTH 20
+#define PLT_FDE_LENGTH 36
+#define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8
+#define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12
+ PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
+ 0, 0, 0, 0, /* CIE ID */
+ 1, /* CIE version */
+ 'z', 'R', 0, /* Augmentation string */
+ 1, /* Code alignment factor */
+ 0x78, /* Data alignment factor */
+ 16, /* Return address column */
+ 1, /* Augmentation size */
+ DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
+ DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
+ DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
+ DW_CFA_nop, DW_CFA_nop,
+
+ PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
+ PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
+ 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
+ 0, 0, 0, 0, /* .plt size goes here */
+ 0, /* Augmentation size */
+ DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
+ DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
+ DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
+ DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
+ DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
+ 11, /* Block length */
+ DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
+ DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
+ DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
+ DW_OP_lit3, DW_OP_shl, DW_OP_plus,
+ DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
+};
+
+/* Architecture-specific backend data for x86-64. */
+
+struct elf_x86_64_backend_data
+{
+ /* Templates for the initial PLT entry and for subsequent entries. */
+ const bfd_byte *plt0_entry;
+ const bfd_byte *plt_entry;
+ unsigned int plt_entry_size; /* Size of each PLT entry. */
+
+ /* Offsets into plt0_entry that are to be replaced with GOT[1] and GOT[2]. */
+ unsigned int plt0_got1_offset;
+ unsigned int plt0_got2_offset;
+
+ /* Offset of the end of the PC-relative instruction containing
+ plt0_got2_offset. */
+ unsigned int plt0_got2_insn_end;
+
+ /* Offsets into plt_entry that are to be replaced with... */
+ unsigned int plt_got_offset; /* ... address of this symbol in .got. */
+ unsigned int plt_reloc_offset; /* ... offset into relocation table. */
+ unsigned int plt_plt_offset; /* ... offset to start of .plt. */
+
+ /* Length of the PC-relative instruction containing plt_got_offset. */
+ unsigned int plt_got_insn_size;
+
+ /* Offset of the end of the PC-relative jump to plt0_entry. */
+ unsigned int plt_plt_insn_end;
+
+ /* Offset into plt_entry where the initial value of the GOT entry points. */
+ unsigned int plt_lazy_offset;
+
+ /* .eh_frame covering the .plt section. */
+ const bfd_byte *eh_frame_plt;
+ unsigned int eh_frame_plt_size;
+};
+
+#define get_elf_x86_64_backend_data(abfd) \
+ ((const struct elf_x86_64_backend_data *) \
+ get_elf_backend_data (abfd)->arch_data)
+
+#define GET_PLT_ENTRY_SIZE(abfd) \
+ get_elf_x86_64_backend_data (abfd)->plt_entry_size
+
+/* These are the standard parameters. */
+static const struct elf_x86_64_backend_data elf_x86_64_arch_bed =
+ {
+ elf_x86_64_plt0_entry, /* plt0_entry */
+ elf_x86_64_plt_entry, /* plt_entry */
+ sizeof (elf_x86_64_plt_entry), /* plt_entry_size */
+ 2, /* plt0_got1_offset */
+ 8, /* plt0_got2_offset */
+ 12, /* plt0_got2_insn_end */
+ 2, /* plt_got_offset */
+ 7, /* plt_reloc_offset */
+ 12, /* plt_plt_offset */
+ 6, /* plt_got_insn_size */
+ PLT_ENTRY_SIZE, /* plt_plt_insn_end */
+ 6, /* plt_lazy_offset */
+ elf_x86_64_eh_frame_plt, /* eh_frame_plt */
+ sizeof (elf_x86_64_eh_frame_plt), /* eh_frame_plt_size */
+ };
+
+#define elf_backend_arch_data &elf_x86_64_arch_bed
+
/* x86-64 ELF linker hash entry. */
-struct elf64_x86_64_link_hash_entry
+struct elf_x86_64_link_hash_entry
{
struct elf_link_hash_entry elf;
bfd_vma tlsdesc_got;
};
-#define elf64_x86_64_hash_entry(ent) \
- ((struct elf64_x86_64_link_hash_entry *)(ent))
+#define elf_x86_64_hash_entry(ent) \
+ ((struct elf_x86_64_link_hash_entry *)(ent))
-struct elf64_x86_64_obj_tdata
+struct elf_x86_64_obj_tdata
{
struct elf_obj_tdata root;
bfd_vma *local_tlsdesc_gotent;
};
-#define elf64_x86_64_tdata(abfd) \
- ((struct elf64_x86_64_obj_tdata *) (abfd)->tdata.any)
+#define elf_x86_64_tdata(abfd) \
+ ((struct elf_x86_64_obj_tdata *) (abfd)->tdata.any)
-#define elf64_x86_64_local_got_tls_type(abfd) \
- (elf64_x86_64_tdata (abfd)->local_got_tls_type)
+#define elf_x86_64_local_got_tls_type(abfd) \
+ (elf_x86_64_tdata (abfd)->local_got_tls_type)
-#define elf64_x86_64_local_tlsdesc_gotent(abfd) \
- (elf64_x86_64_tdata (abfd)->local_tlsdesc_gotent)
+#define elf_x86_64_local_tlsdesc_gotent(abfd) \
+ (elf_x86_64_tdata (abfd)->local_tlsdesc_gotent)
#define is_x86_64_elf(bfd) \
(bfd_get_flavour (bfd) == bfd_target_elf_flavour \
&& elf_object_id (bfd) == X86_64_ELF_DATA)
static bfd_boolean
-elf64_x86_64_mkobject (bfd *abfd)
+elf_x86_64_mkobject (bfd *abfd)
{
- return bfd_elf_allocate_object (abfd, sizeof (struct elf64_x86_64_obj_tdata),
+ return bfd_elf_allocate_object (abfd, sizeof (struct elf_x86_64_obj_tdata),
X86_64_ELF_DATA);
}
/* x86-64 ELF linker hash table. */
-struct elf64_x86_64_link_hash_table
+struct elf_x86_64_link_hash_table
{
struct elf_link_hash_table elf;
/* Short-cuts to get to dynamic linker sections. */
asection *sdynbss;
asection *srelbss;
+ asection *plt_eh_frame;
union
{
/* Small local sym cache. */
struct sym_cache sym_cache;
+ bfd_vma (*r_info) (bfd_vma, bfd_vma);
+ bfd_vma (*r_sym) (bfd_vma);
+ unsigned int pointer_r_type;
+ const char *dynamic_interpreter;
+ int dynamic_interpreter_size;
+
/* _TLS_MODULE_BASE_ symbol. */
struct bfd_link_hash_entry *tls_module_base;
/* The offset into sgot of the GOT entry used by the PLT entry
above. */
bfd_vma tlsdesc_got;
+
+ /* The index of the next R_X86_64_JUMP_SLOT entry in .rela.plt. */
+ bfd_vma next_jump_slot_index;
+ /* The index of the next R_X86_64_IRELATIVE entry in .rela.plt. */
+ bfd_vma next_irelative_index;
};
/* Get the x86-64 ELF linker hash table from a link_info structure. */
-#define elf64_x86_64_hash_table(p) \
+#define elf_x86_64_hash_table(p) \
(elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
- == X86_64_ELF_DATA ? ((struct elf64_x86_64_link_hash_table *) ((p)->hash)) : NULL)
+ == X86_64_ELF_DATA ? ((struct elf_x86_64_link_hash_table *) ((p)->hash)) : NULL)
-#define elf64_x86_64_compute_jump_table_size(htab) \
+#define elf_x86_64_compute_jump_table_size(htab) \
((htab)->elf.srelplt->reloc_count * GOT_ENTRY_SIZE)
/* Create an entry in an x86-64 ELF linker hash table. */
static struct bfd_hash_entry *
-elf64_x86_64_link_hash_newfunc (struct bfd_hash_entry *entry,
- struct bfd_hash_table *table,
- const char *string)
+elf_x86_64_link_hash_newfunc (struct bfd_hash_entry *entry,
+ struct bfd_hash_table *table,
+ const char *string)
{
/* Allocate the structure if it has not already been allocated by a
subclass. */
if (entry == NULL)
{
entry = (struct bfd_hash_entry *)
- bfd_hash_allocate (table,
- sizeof (struct elf64_x86_64_link_hash_entry));
+ bfd_hash_allocate (table,
+ sizeof (struct elf_x86_64_link_hash_entry));
if (entry == NULL)
return entry;
}
entry = _bfd_elf_link_hash_newfunc (entry, table, string);
if (entry != NULL)
{
- struct elf64_x86_64_link_hash_entry *eh;
+ struct elf_x86_64_link_hash_entry *eh;
- eh = (struct elf64_x86_64_link_hash_entry *) entry;
+ eh = (struct elf_x86_64_link_hash_entry *) entry;
eh->dyn_relocs = NULL;
eh->tls_type = GOT_UNKNOWN;
eh->tlsdesc_got = (bfd_vma) -1;
hash since they aren't used by global symbols in this backend. */
static hashval_t
-elf64_x86_64_local_htab_hash (const void *ptr)
+elf_x86_64_local_htab_hash (const void *ptr)
{
struct elf_link_hash_entry *h
= (struct elf_link_hash_entry *) ptr;
/* Compare local hash entries. */
static int
-elf64_x86_64_local_htab_eq (const void *ptr1, const void *ptr2)
+elf_x86_64_local_htab_eq (const void *ptr1, const void *ptr2)
{
struct elf_link_hash_entry *h1
= (struct elf_link_hash_entry *) ptr1;
/* Find and/or create a hash entry for local symbol. */
static struct elf_link_hash_entry *
-elf64_x86_64_get_local_sym_hash (struct elf64_x86_64_link_hash_table *htab,
- bfd *abfd, const Elf_Internal_Rela *rel,
- bfd_boolean create)
+elf_x86_64_get_local_sym_hash (struct elf_x86_64_link_hash_table *htab,
+ bfd *abfd, const Elf_Internal_Rela *rel,
+ bfd_boolean create)
{
- struct elf64_x86_64_link_hash_entry e, *ret;
+ struct elf_x86_64_link_hash_entry e, *ret;
asection *sec = abfd->sections;
hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
- ELF64_R_SYM (rel->r_info));
+ htab->r_sym (rel->r_info));
void **slot;
e.elf.indx = sec->id;
- e.elf.dynstr_index = ELF64_R_SYM (rel->r_info);
+ e.elf.dynstr_index = htab->r_sym (rel->r_info);
slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
create ? INSERT : NO_INSERT);
if (*slot)
{
- ret = (struct elf64_x86_64_link_hash_entry *) *slot;
+ ret = (struct elf_x86_64_link_hash_entry *) *slot;
return &ret->elf;
}
- ret = (struct elf64_x86_64_link_hash_entry *)
+ ret = (struct elf_x86_64_link_hash_entry *)
objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
- sizeof (struct elf64_x86_64_link_hash_entry));
+ sizeof (struct elf_x86_64_link_hash_entry));
if (ret)
{
memset (ret, 0, sizeof (*ret));
ret->elf.indx = sec->id;
- ret->elf.dynstr_index = ELF64_R_SYM (rel->r_info);
+ ret->elf.dynstr_index = htab->r_sym (rel->r_info);
ret->elf.dynindx = -1;
*slot = ret;
}
/* Create an X86-64 ELF linker hash table. */
static struct bfd_link_hash_table *
-elf64_x86_64_link_hash_table_create (bfd *abfd)
+elf_x86_64_link_hash_table_create (bfd *abfd)
{
- struct elf64_x86_64_link_hash_table *ret;
- bfd_size_type amt = sizeof (struct elf64_x86_64_link_hash_table);
+ struct elf_x86_64_link_hash_table *ret;
+ bfd_size_type amt = sizeof (struct elf_x86_64_link_hash_table);
- ret = (struct elf64_x86_64_link_hash_table *) bfd_malloc (amt);
+ ret = (struct elf_x86_64_link_hash_table *) bfd_malloc (amt);
if (ret == NULL)
return NULL;
if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
- elf64_x86_64_link_hash_newfunc,
- sizeof (struct elf64_x86_64_link_hash_entry),
+ elf_x86_64_link_hash_newfunc,
+ sizeof (struct elf_x86_64_link_hash_entry),
X86_64_ELF_DATA))
{
free (ret);
ret->sdynbss = NULL;
ret->srelbss = NULL;
+ ret->plt_eh_frame = NULL;
ret->sym_cache.abfd = NULL;
ret->tlsdesc_plt = 0;
ret->tlsdesc_got = 0;
ret->tls_ld_got.refcount = 0;
ret->sgotplt_jump_table_size = 0;
ret->tls_module_base = NULL;
+ ret->next_jump_slot_index = 0;
+ ret->next_irelative_index = 0;
+
+ if (ABI_64_P (abfd))
+ {
+ ret->r_info = elf64_r_info;
+ ret->r_sym = elf64_r_sym;
+ ret->pointer_r_type = R_X86_64_64;
+ ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
+ ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER;
+ }
+ else
+ {
+ ret->r_info = elf32_r_info;
+ ret->r_sym = elf32_r_sym;
+ ret->pointer_r_type = R_X86_64_32;
+ ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
+ ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER;
+ }
ret->loc_hash_table = htab_try_create (1024,
- elf64_x86_64_local_htab_hash,
- elf64_x86_64_local_htab_eq,
+ elf_x86_64_local_htab_hash,
+ elf_x86_64_local_htab_eq,
NULL);
ret->loc_hash_memory = objalloc_create ();
if (!ret->loc_hash_table || !ret->loc_hash_memory)
/* Destroy an X86-64 ELF linker hash table. */
static void
-elf64_x86_64_link_hash_table_free (struct bfd_link_hash_table *hash)
+elf_x86_64_link_hash_table_free (struct bfd_link_hash_table *hash)
{
- struct elf64_x86_64_link_hash_table *htab
- = (struct elf64_x86_64_link_hash_table *) hash;
+ struct elf_x86_64_link_hash_table *htab
+ = (struct elf_x86_64_link_hash_table *) hash;
if (htab->loc_hash_table)
htab_delete (htab->loc_hash_table);
hash table. */
static bfd_boolean
-elf64_x86_64_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
+elf_x86_64_create_dynamic_sections (bfd *dynobj,
+ struct bfd_link_info *info)
{
- struct elf64_x86_64_link_hash_table *htab;
+ struct elf_x86_64_link_hash_table *htab;
if (!_bfd_elf_create_dynamic_sections (dynobj, info))
return FALSE;
- htab = elf64_x86_64_hash_table (info);
+ htab = elf_x86_64_hash_table (info);
if (htab == NULL)
return FALSE;
|| (!info->shared && !htab->srelbss))
abort ();
+ if (!info->no_ld_generated_unwind_info
+ && bfd_get_section_by_name (dynobj, ".eh_frame") == NULL
+ && htab->elf.splt != NULL)
+ {
+ const struct elf_x86_64_backend_data *const abed
+ = get_elf_x86_64_backend_data (dynobj);
+ flagword flags = get_elf_backend_data (dynobj)->dynamic_sec_flags;
+ htab->plt_eh_frame
+ = bfd_make_section_with_flags (dynobj, ".eh_frame",
+ flags | SEC_READONLY);
+ if (htab->plt_eh_frame == NULL
+ || !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 3))
+ return FALSE;
+
+ htab->plt_eh_frame->size = abed->eh_frame_plt_size;
+ htab->plt_eh_frame->contents
+ = bfd_alloc (dynobj, htab->plt_eh_frame->size);
+ memcpy (htab->plt_eh_frame->contents,
+ abed->eh_frame_plt, abed->eh_frame_plt_size);
+ }
return TRUE;
}
/* Copy the extra info we tack onto an elf_link_hash_entry. */
static void
-elf64_x86_64_copy_indirect_symbol (struct bfd_link_info *info,
- struct elf_link_hash_entry *dir,
- struct elf_link_hash_entry *ind)
+elf_x86_64_copy_indirect_symbol (struct bfd_link_info *info,
+ struct elf_link_hash_entry *dir,
+ struct elf_link_hash_entry *ind)
{
- struct elf64_x86_64_link_hash_entry *edir, *eind;
+ struct elf_x86_64_link_hash_entry *edir, *eind;
- edir = (struct elf64_x86_64_link_hash_entry *) dir;
- eind = (struct elf64_x86_64_link_hash_entry *) ind;
+ edir = (struct elf_x86_64_link_hash_entry *) dir;
+ eind = (struct elf_x86_64_link_hash_entry *) ind;
if (eind->dyn_relocs != NULL)
{
return TRUE;
}
-typedef union
- {
- unsigned char c[2];
- uint16_t i;
- }
-x86_64_opcode16;
-
-typedef union
- {
- unsigned char c[4];
- uint32_t i;
- }
-x86_64_opcode32;
+static bfd_boolean
+elf32_x86_64_elf_object_p (bfd *abfd)
+{
+ /* Set the right machine number for an x86-64 elf32 file. */
+ bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32);
+ return TRUE;
+}
/* Return TRUE if the TLS access code sequence support transition
from R_TYPE. */
static bfd_boolean
-elf64_x86_64_check_tls_transition (bfd *abfd, asection *sec,
- bfd_byte *contents,
- Elf_Internal_Shdr *symtab_hdr,
- struct elf_link_hash_entry **sym_hashes,
- unsigned int r_type,
- const Elf_Internal_Rela *rel,
- const Elf_Internal_Rela *relend)
+elf_x86_64_check_tls_transition (bfd *abfd,
+ struct bfd_link_info *info,
+ asection *sec,
+ bfd_byte *contents,
+ Elf_Internal_Shdr *symtab_hdr,
+ struct elf_link_hash_entry **sym_hashes,
+ unsigned int r_type,
+ const Elf_Internal_Rela *rel,
+ const Elf_Internal_Rela *relend)
{
unsigned int val;
unsigned long r_symndx;
struct elf_link_hash_entry *h;
bfd_vma offset;
+ struct elf_x86_64_link_hash_table *htab;
/* Get the section contents. */
if (contents == NULL)
}
}
+ htab = elf_x86_64_hash_table (info);
offset = rel->r_offset;
switch (r_type)
{
if (r_type == R_X86_64_TLSGD)
{
- /* Check transition from GD access model. Only
+ /* Check transition from GD access model. For 64bit, only
.byte 0x66; leaq foo@tlsgd(%rip), %rdi
.word 0x6666; rex64; call __tls_get_addr
+ can transit to different access model. For 32bit, only
+ leaq foo@tlsgd(%rip), %rdi
+ .word 0x6666; rex64; call __tls_get_addr
can transit to different access model. */
- static x86_64_opcode32 leaq = { { 0x66, 0x48, 0x8d, 0x3d } },
- call = { { 0x66, 0x66, 0x48, 0xe8 } };
- if (offset < 4
- || (offset + 12) > sec->size
- || bfd_get_32 (abfd, contents + offset - 4) != leaq.i
- || bfd_get_32 (abfd, contents + offset + 4) != call.i)
+ static const unsigned char call[] = { 0x66, 0x66, 0x48, 0xe8 };
+ static const unsigned char leaq[] = { 0x66, 0x48, 0x8d, 0x3d };
+
+ if ((offset + 12) > sec->size
+ || memcmp (contents + offset + 4, call, 4) != 0)
return FALSE;
+
+ if (ABI_64_P (abfd))
+ {
+ if (offset < 4
+ || memcmp (contents + offset - 4, leaq, 4) != 0)
+ return FALSE;
+ }
+ else
+ {
+ if (offset < 3
+ || memcmp (contents + offset - 3, leaq + 1, 3) != 0)
+ return FALSE;
+ }
}
else
{
call __tls_get_addr
can transit to different access model. */
- static x86_64_opcode32 ld = { { 0x48, 0x8d, 0x3d, 0xe8 } };
- x86_64_opcode32 op;
+ static const unsigned char lea[] = { 0x48, 0x8d, 0x3d };
if (offset < 3 || (offset + 9) > sec->size)
return FALSE;
- op.i = bfd_get_32 (abfd, contents + offset - 3);
- op.c[3] = bfd_get_8 (abfd, contents + offset + 4);
- if (op.i != ld.i)
+ if (memcmp (contents + offset - 3, lea, 3) != 0
+ || 0xe8 != *(contents + offset + 4))
return FALSE;
}
- r_symndx = ELF64_R_SYM (rel[1].r_info);
+ r_symndx = htab->r_sym (rel[1].r_info);
if (r_symndx < symtab_hdr->sh_info)
return FALSE;
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
/* Use strncmp to check __tls_get_addr since __tls_get_addr
- may be versioned. */
+ may be versioned. */
return (h != NULL
&& h->root.root.string != NULL
- && (ELF64_R_TYPE (rel[1].r_info) == R_X86_64_PC32
- || ELF64_R_TYPE (rel[1].r_info) == R_X86_64_PLT32)
+ && (ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PC32
+ || ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PLT32)
&& (strncmp (h->root.root.string,
"__tls_get_addr", 14) == 0));
case R_X86_64_GOTTPOFF:
/* Check transition from IE access model:
- movq foo@gottpoff(%rip), %reg
- addq foo@gottpoff(%rip), %reg
+ mov foo@gottpoff(%rip), %reg
+ add foo@gottpoff(%rip), %reg
*/
- if (offset < 3 || (offset + 4) > sec->size)
- return FALSE;
-
- val = bfd_get_8 (abfd, contents + offset - 3);
- if (val != 0x48 && val != 0x4c)
- return FALSE;
+ /* Check REX prefix first. */
+ if (offset >= 3 && (offset + 4) <= sec->size)
+ {
+ val = bfd_get_8 (abfd, contents + offset - 3);
+ if (val != 0x48 && val != 0x4c)
+ {
+ /* X32 may have 0x44 REX prefix or no REX prefix. */
+ if (ABI_64_P (abfd))
+ return FALSE;
+ }
+ }
+ else
+ {
+ /* X32 may not have any REX prefix. */
+ if (ABI_64_P (abfd))
+ return FALSE;
+ if (offset < 2 || (offset + 3) > sec->size)
+ return FALSE;
+ }
val = bfd_get_8 (abfd, contents + offset - 2);
if (val != 0x8b && val != 0x03)
if (offset + 2 <= sec->size)
{
/* Make sure that it's a call *x@tlsdesc(%rax). */
- static x86_64_opcode16 call = { { 0xff, 0x10 } };
- return bfd_get_16 (abfd, contents + offset) == call.i;
+ static const unsigned char call[] = { 0xff, 0x10 };
+ return memcmp (contents + offset, call, 2) == 0;
}
return FALSE;
will be performed. Update R_TYPE if there is a transition. */
static bfd_boolean
-elf64_x86_64_tls_transition (struct bfd_link_info *info, bfd *abfd,
- asection *sec, bfd_byte *contents,
- Elf_Internal_Shdr *symtab_hdr,
- struct elf_link_hash_entry **sym_hashes,
- unsigned int *r_type, int tls_type,
- const Elf_Internal_Rela *rel,
- const Elf_Internal_Rela *relend,
- struct elf_link_hash_entry *h,
- unsigned long r_symndx)
+elf_x86_64_tls_transition (struct bfd_link_info *info, bfd *abfd,
+ asection *sec, bfd_byte *contents,
+ Elf_Internal_Shdr *symtab_hdr,
+ struct elf_link_hash_entry **sym_hashes,
+ unsigned int *r_type, int tls_type,
+ const Elf_Internal_Rela *rel,
+ const Elf_Internal_Rela *relend,
+ struct elf_link_hash_entry *h,
+ unsigned long r_symndx)
{
unsigned int from_type = *r_type;
unsigned int to_type = from_type;
to_type = R_X86_64_GOTTPOFF;
}
- /* When we are called from elf64_x86_64_relocate_section,
+ /* When we are called from elf_x86_64_relocate_section,
CONTENTS isn't NULL and there may be additional transitions
based on TLS_TYPE. */
if (contents != NULL)
}
/* We checked the transition before when we were called from
- elf64_x86_64_check_relocs. We only want to check the new
+ elf_x86_64_check_relocs. We only want to check the new
transition which hasn't been checked before. */
check = new_to_type != to_type && from_type == to_type;
to_type = new_to_type;
/* Check if the transition can be performed. */
if (check
- && ! elf64_x86_64_check_tls_transition (abfd, sec, contents,
- symtab_hdr, sym_hashes,
- from_type, rel, relend))
+ && ! elf_x86_64_check_tls_transition (abfd, info, sec, contents,
+ symtab_hdr, sym_hashes,
+ from_type, rel, relend))
{
reloc_howto_type *from, *to;
const char *name;
- from = elf64_x86_64_rtype_to_howto (abfd, from_type);
- to = elf64_x86_64_rtype_to_howto (abfd, to_type);
+ from = elf_x86_64_rtype_to_howto (abfd, from_type);
+ to = elf_x86_64_rtype_to_howto (abfd, to_type);
if (h)
name = h->root.root.string;
else
{
- struct elf64_x86_64_link_hash_table *htab;
+ struct elf_x86_64_link_hash_table *htab;
- htab = elf64_x86_64_hash_table (info);
+ htab = elf_x86_64_hash_table (info);
if (htab == NULL)
name = "*unknown*";
else
linkage table, and dynamic reloc sections. */
static bfd_boolean
-elf64_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info,
- asection *sec,
- const Elf_Internal_Rela *relocs)
+elf_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info,
+ asection *sec,
+ const Elf_Internal_Rela *relocs)
{
- struct elf64_x86_64_link_hash_table *htab;
+ struct elf_x86_64_link_hash_table *htab;
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
const Elf_Internal_Rela *rel;
BFD_ASSERT (is_x86_64_elf (abfd));
- htab = elf64_x86_64_hash_table (info);
+ htab = elf_x86_64_hash_table (info);
if (htab == NULL)
return FALSE;
Elf_Internal_Sym *isym;
const char *name;
- r_symndx = ELF64_R_SYM (rel->r_info);
- r_type = ELF64_R_TYPE (rel->r_info);
+ r_symndx = htab->r_sym (rel->r_info);
+ r_type = ELF32_R_TYPE (rel->r_info);
if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
{
return FALSE;
/* Check relocation against local STT_GNU_IFUNC symbol. */
- if (ELF64_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
+ if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
{
- h = elf64_x86_64_get_local_sym_hash (htab, abfd, rel,
- TRUE);
+ h = elf_x86_64_get_local_sym_hash (htab, abfd, rel,
+ TRUE);
if (h == NULL)
return FALSE;
h = (struct elf_link_hash_entry *) h->root.u.i.link;
}
+ /* Check invalid x32 relocations. */
+ if (!ABI_64_P (abfd))
+ switch (r_type)
+ {
+ default:
+ break;
+
+ case R_X86_64_DTPOFF64:
+ case R_X86_64_TPOFF64:
+ case R_X86_64_PC64:
+ case R_X86_64_GOTOFF64:
+ case R_X86_64_GOT64:
+ case R_X86_64_GOTPCREL64:
+ case R_X86_64_GOTPC64:
+ case R_X86_64_GOTPLT64:
+ case R_X86_64_PLTOFF64:
+ {
+ if (h)
+ name = h->root.root.string;
+ else
+ name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
+ NULL);
+ (*_bfd_error_handler)
+ (_("%B: relocation %s against symbol `%s' isn't "
+ "supported in x32 mode"), abfd,
+ x86_64_elf_howto_table[r_type].name, name);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+ break;
+ }
+
if (h != NULL)
{
/* Create the ifunc sections for static executables. If we
case R_X86_64_PLT32:
case R_X86_64_GOTPCREL:
case R_X86_64_GOTPCREL64:
- if (!_bfd_elf_create_ifunc_sections (abfd, info))
+ if (htab->elf.dynobj == NULL)
+ htab->elf.dynobj = abfd;
+ if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info))
return FALSE;
break;
}
bfd_set_error (bfd_error_bad_value);
return FALSE;
+ case R_X86_64_32:
+ if (ABI_64_P (abfd))
+ goto not_pointer;
case R_X86_64_64:
h->non_got_ref = 1;
h->pointer_equality_needed = 1;
make room for this reloc. */
sreloc = _bfd_elf_create_ifunc_dyn_reloc
(abfd, info, sec, sreloc,
- &((struct elf64_x86_64_link_hash_entry *) h)->dyn_relocs);
+ &((struct elf_x86_64_link_hash_entry *) h)->dyn_relocs);
if (sreloc == NULL)
return FALSE;
}
break;
case R_X86_64_32S:
- case R_X86_64_32:
case R_X86_64_PC32:
case R_X86_64_PC64:
+not_pointer:
h->non_got_ref = 1;
if (r_type != R_X86_64_PC32
&& r_type != R_X86_64_PC64)
}
}
- if (! elf64_x86_64_tls_transition (info, abfd, sec, NULL,
- symtab_hdr, sym_hashes,
- &r_type, GOT_UNKNOWN,
- rel, rel_end, h, r_symndx))
+ if (! elf_x86_64_tls_transition (info, abfd, sec, NULL,
+ symtab_hdr, sym_hashes,
+ &r_type, GOT_UNKNOWN,
+ rel, rel_end, h, r_symndx))
return FALSE;
switch (r_type)
goto create_got;
case R_X86_64_TPOFF32:
- if (!info->executable)
+ if (!info->executable && ABI_64_P (abfd))
{
if (h)
name = h->root.root.string;
h->plt.refcount += 1;
}
h->got.refcount += 1;
- old_tls_type = elf64_x86_64_hash_entry (h)->tls_type;
+ old_tls_type = elf_x86_64_hash_entry (h)->tls_type;
}
else
{
if (local_got_refcounts == NULL)
return FALSE;
elf_local_got_refcounts (abfd) = local_got_refcounts;
- elf64_x86_64_local_tlsdesc_gotent (abfd)
+ elf_x86_64_local_tlsdesc_gotent (abfd)
= (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
- elf64_x86_64_local_got_tls_type (abfd)
+ elf_x86_64_local_got_tls_type (abfd)
= (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
}
local_got_refcounts[r_symndx] += 1;
old_tls_type
- = elf64_x86_64_local_got_tls_type (abfd) [r_symndx];
+ = elf_x86_64_local_got_tls_type (abfd) [r_symndx];
}
/* If a TLS symbol is accessed using IE at least once,
if (old_tls_type != tls_type)
{
if (h != NULL)
- elf64_x86_64_hash_entry (h)->tls_type = tls_type;
+ elf_x86_64_hash_entry (h)->tls_type = tls_type;
else
- elf64_x86_64_local_got_tls_type (abfd) [r_symndx] = tls_type;
+ elf_x86_64_local_got_tls_type (abfd) [r_symndx] = tls_type;
}
}
/* Fall through */
}
goto create_got;
+ case R_X86_64_32:
+ if (!ABI_64_P (abfd))
+ goto pointer;
case R_X86_64_8:
case R_X86_64_16:
- case R_X86_64_32:
case R_X86_64_32S:
/* Let's help debug shared library creation. These relocs
cannot be used in shared libs. Don't error out for
case R_X86_64_PC32:
case R_X86_64_PC64:
case R_X86_64_64:
+pointer:
if (h != NULL && info->executable)
{
/* If this reloc is in a read-only section, we might
htab->elf.dynobj = abfd;
sreloc = _bfd_elf_make_dynamic_reloc_section
- (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
+ (sec, htab->elf.dynobj, ABI_64_P (abfd) ? 3 : 2,
+ abfd, /*rela?*/ TRUE);
if (sreloc == NULL)
return FALSE;
relocations we need for this symbol. */
if (h != NULL)
{
- head = &((struct elf64_x86_64_link_hash_entry *) h)->dyn_relocs;
+ head = &((struct elf_x86_64_link_hash_entry *) h)->dyn_relocs;
}
else
{
relocation. */
static asection *
-elf64_x86_64_gc_mark_hook (asection *sec,
- struct bfd_link_info *info,
- Elf_Internal_Rela *rel,
- struct elf_link_hash_entry *h,
- Elf_Internal_Sym *sym)
+elf_x86_64_gc_mark_hook (asection *sec,
+ struct bfd_link_info *info,
+ Elf_Internal_Rela *rel,
+ struct elf_link_hash_entry *h,
+ Elf_Internal_Sym *sym)
{
if (h != NULL)
- switch (ELF64_R_TYPE (rel->r_info))
+ switch (ELF32_R_TYPE (rel->r_info))
{
case R_X86_64_GNU_VTINHERIT:
case R_X86_64_GNU_VTENTRY:
/* Update the got entry reference counts for the section being removed. */
static bfd_boolean
-elf64_x86_64_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
- asection *sec,
- const Elf_Internal_Rela *relocs)
+elf_x86_64_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
+ asection *sec,
+ const Elf_Internal_Rela *relocs)
{
- struct elf64_x86_64_link_hash_table *htab;
+ struct elf_x86_64_link_hash_table *htab;
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
bfd_signed_vma *local_got_refcounts;
if (info->relocatable)
return TRUE;
- htab = elf64_x86_64_hash_table (info);
+ htab = elf_x86_64_hash_table (info);
if (htab == NULL)
return FALSE;
sym_hashes = elf_sym_hashes (abfd);
local_got_refcounts = elf_local_got_refcounts (abfd);
+ htab = elf_x86_64_hash_table (info);
relend = relocs + sec->reloc_count;
for (rel = relocs; rel < relend; rel++)
{
unsigned int r_type;
struct elf_link_hash_entry *h = NULL;
- r_symndx = ELF64_R_SYM (rel->r_info);
+ r_symndx = htab->r_sym (rel->r_info);
if (r_symndx >= symtab_hdr->sh_info)
{
- struct elf64_x86_64_link_hash_entry *eh;
- struct elf_dyn_relocs **pp;
- struct elf_dyn_relocs *p;
-
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;
- eh = (struct elf64_x86_64_link_hash_entry *) h;
-
- for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
- if (p->sec == sec)
- {
- /* Everything must go for SEC. */
- *pp = p->next;
- break;
- }
}
else
{
/* Check relocation against local STT_GNU_IFUNC symbol. */
if (isym != NULL
- && ELF64_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
+ && ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
{
- h = elf64_x86_64_get_local_sym_hash (htab, abfd, rel,
- FALSE);
+ h = elf_x86_64_get_local_sym_hash (htab, abfd, rel, FALSE);
if (h == NULL)
abort ();
}
}
- r_type = ELF64_R_TYPE (rel->r_info);
- if (! elf64_x86_64_tls_transition (info, abfd, sec, NULL,
- symtab_hdr, sym_hashes,
- &r_type, GOT_UNKNOWN,
- rel, relend, h, r_symndx))
+ if (h)
+ {
+ struct elf_x86_64_link_hash_entry *eh;
+ struct elf_dyn_relocs **pp;
+ struct elf_dyn_relocs *p;
+
+ eh = (struct elf_x86_64_link_hash_entry *) h;
+
+ for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
+ if (p->sec == sec)
+ {
+ /* Everything must go for SEC. */
+ *pp = p->next;
+ break;
+ }
+ }
+
+ r_type = ELF32_R_TYPE (rel->r_info);
+ if (! elf_x86_64_tls_transition (info, abfd, sec, NULL,
+ symtab_hdr, sym_hashes,
+ &r_type, GOT_UNKNOWN,
+ rel, relend, h, r_symndx))
return FALSE;
switch (r_type)
if (h != NULL)
{
if (r_type == R_X86_64_GOTPLT64 && h->plt.refcount > 0)
- h->plt.refcount -= 1;
+ h->plt.refcount -= 1;
if (h->got.refcount > 0)
h->got.refcount -= 1;
if (h->type == STT_GNU_IFUNC)
case R_X86_64_PC16:
case R_X86_64_PC32:
case R_X86_64_PC64:
- if (info->shared)
+ if (info->shared
+ && (h == NULL || h->type != STT_GNU_IFUNC))
break;
/* Fall thru */
understand. */
static bfd_boolean
-elf64_x86_64_adjust_dynamic_symbol (struct bfd_link_info *info,
- struct elf_link_hash_entry *h)
+elf_x86_64_adjust_dynamic_symbol (struct bfd_link_info *info,
+ struct elf_link_hash_entry *h)
{
- struct elf64_x86_64_link_hash_table *htab;
+ struct elf_x86_64_link_hash_table *htab;
asection *s;
/* STT_GNU_IFUNC symbol must go through PLT. */
if (ELIMINATE_COPY_RELOCS)
{
- struct elf64_x86_64_link_hash_entry * eh;
+ struct elf_x86_64_link_hash_entry * eh;
struct elf_dyn_relocs *p;
- eh = (struct elf64_x86_64_link_hash_entry *) h;
+ eh = (struct elf_x86_64_link_hash_entry *) h;
for (p = eh->dyn_relocs; p != NULL; p = p->next)
{
s = p->sec->output_section;
}
}
- 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
both the dynamic object and the regular object will refer to the
same memory location for the variable. */
- htab = elf64_x86_64_hash_table (info);
+ htab = elf_x86_64_hash_table (info);
if (htab == NULL)
return FALSE;
/* We must generate a R_X86_64_COPY reloc to tell the dynamic linker
to copy the initial value out of the dynamic object and into the
runtime process image. */
- if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
+ if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
{
- htab->srelbss->size += sizeof (Elf64_External_Rela);
+ const struct elf_backend_data *bed;
+ bed = get_elf_backend_data (info->output_bfd);
+ htab->srelbss->size += bed->s->sizeof_rela;
h->needs_copy = 1;
}
dynamic relocs. */
static bfd_boolean
-elf64_x86_64_allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
+elf_x86_64_allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
{
struct bfd_link_info *info;
- struct elf64_x86_64_link_hash_table *htab;
- struct elf64_x86_64_link_hash_entry *eh;
+ struct elf_x86_64_link_hash_table *htab;
+ struct elf_x86_64_link_hash_entry *eh;
struct elf_dyn_relocs *p;
+ const struct elf_backend_data *bed;
+ unsigned int plt_entry_size;
if (h->root.type == bfd_link_hash_indirect)
return TRUE;
- if (h->root.type == bfd_link_hash_warning)
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
- eh = (struct elf64_x86_64_link_hash_entry *) h;
+ eh = (struct elf_x86_64_link_hash_entry *) h;
info = (struct bfd_link_info *) inf;
- htab = elf64_x86_64_hash_table (info);
+ htab = elf_x86_64_hash_table (info);
if (htab == NULL)
return FALSE;
+ bed = get_elf_backend_data (info->output_bfd);
+ plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
/* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
here if it is defined and referenced in a non-shared object. */
&& h->def_regular)
return _bfd_elf_allocate_ifunc_dyn_relocs (info, h,
&eh->dyn_relocs,
- PLT_ENTRY_SIZE,
+ plt_entry_size,
GOT_ENTRY_SIZE);
else if (htab->elf.dynamic_sections_created
&& h->plt.refcount > 0)
/* If this is the first .plt entry, make room for the special
first entry. */
if (s->size == 0)
- s->size += PLT_ENTRY_SIZE;
+ s->size += plt_entry_size;
h->plt.offset = s->size;
}
/* Make room for this entry. */
- s->size += PLT_ENTRY_SIZE;
+ 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. */
htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
/* We also need to make an entry in the .rela.plt section. */
- htab->elf.srelplt->size += sizeof (Elf64_External_Rela);
+ htab->elf.srelplt->size += bed->s->sizeof_rela;
htab->elf.srelplt->reloc_count++;
}
else
if (h->got.refcount > 0
&& info->executable
&& h->dynindx == -1
- && elf64_x86_64_hash_entry (h)->tls_type == GOT_TLS_IE)
+ && elf_x86_64_hash_entry (h)->tls_type == GOT_TLS_IE)
{
h->got.offset = (bfd_vma) -1;
}
{
asection *s;
bfd_boolean dyn;
- int tls_type = elf64_x86_64_hash_entry (h)->tls_type;
+ int tls_type = elf_x86_64_hash_entry (h)->tls_type;
/* Make sure this symbol is output as a dynamic symbol.
Undefined weak syms won't yet be marked as dynamic. */
if (GOT_TLS_GDESC_P (tls_type))
{
eh->tlsdesc_got = htab->elf.sgotplt->size
- - elf64_x86_64_compute_jump_table_size (htab);
+ - elf_x86_64_compute_jump_table_size (htab);
htab->elf.sgotplt->size += 2 * GOT_ENTRY_SIZE;
h->got.offset = (bfd_vma) -2;
}
R_X86_64_GOTTPOFF needs one dynamic relocation. */
if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
|| tls_type == GOT_TLS_IE)
- htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
+ htab->elf.srelgot->size += bed->s->sizeof_rela;
else if (GOT_TLS_GD_P (tls_type))
- htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela);
+ htab->elf.srelgot->size += 2 * bed->s->sizeof_rela;
else if (! GOT_TLS_GDESC_P (tls_type)
&& (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|| h->root.type != bfd_link_hash_undefweak)
&& (info->shared
|| WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
- htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
+ htab->elf.srelgot->size += bed->s->sizeof_rela;
if (GOT_TLS_GDESC_P (tls_type))
{
- htab->elf.srelplt->size += sizeof (Elf64_External_Rela);
+ htab->elf.srelplt->size += bed->s->sizeof_rela;
htab->tlsdesc_plt = (bfd_vma) -1;
}
}
BFD_ASSERT (sreloc != NULL);
- sreloc->size += p->count * sizeof (Elf64_External_Rela);
+ sreloc->size += p->count * bed->s->sizeof_rela;
}
return TRUE;
local dynamic relocs. */
static bfd_boolean
-elf64_x86_64_allocate_local_dynrelocs (void **slot, void *inf)
+elf_x86_64_allocate_local_dynrelocs (void **slot, void *inf)
{
struct elf_link_hash_entry *h
= (struct elf_link_hash_entry *) *slot;
|| h->root.type != bfd_link_hash_defined)
abort ();
- return elf64_x86_64_allocate_dynrelocs (h, inf);
+ return elf_x86_64_allocate_dynrelocs (h, inf);
}
/* Find any dynamic relocs that apply to read-only sections. */
static bfd_boolean
-elf64_x86_64_readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
+elf_x86_64_readonly_dynrelocs (struct elf_link_hash_entry *h,
+ void * inf)
{
- struct elf64_x86_64_link_hash_entry *eh;
+ struct elf_x86_64_link_hash_entry *eh;
struct elf_dyn_relocs *p;
- if (h->root.type == bfd_link_hash_warning)
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
+ /* Skip local IFUNC symbols. */
+ if (h->forced_local && h->type == STT_GNU_IFUNC)
+ return TRUE;
- eh = (struct elf64_x86_64_link_hash_entry *) h;
+ eh = (struct elf_x86_64_link_hash_entry *) h;
for (p = eh->dyn_relocs; p != NULL; p = p->next)
{
asection *s = p->sec->output_section;
info->flags |= DF_TEXTREL;
+ if (info->warn_shared_textrel && info->shared)
+ info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'.\n"),
+ p->sec->owner, h->root.root.string,
+ p->sec);
+
/* Not an error, just cut short the traversal. */
return FALSE;
}
/* Set the sizes of the dynamic sections. */
static bfd_boolean
-elf64_x86_64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
- struct bfd_link_info *info)
+elf_x86_64_size_dynamic_sections (bfd *output_bfd,
+ struct bfd_link_info *info)
{
- struct elf64_x86_64_link_hash_table *htab;
+ struct elf_x86_64_link_hash_table *htab;
bfd *dynobj;
asection *s;
bfd_boolean relocs;
bfd *ibfd;
+ const struct elf_backend_data *bed;
- htab = elf64_x86_64_hash_table (info);
+ htab = elf_x86_64_hash_table (info);
if (htab == NULL)
return FALSE;
+ bed = get_elf_backend_data (output_bfd);
dynobj = htab->elf.dynobj;
if (dynobj == NULL)
s = bfd_get_section_by_name (dynobj, ".interp");
if (s == NULL)
abort ();
- s->size = sizeof ELF_DYNAMIC_INTERPRETER;
- s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
+ s->size = htab->dynamic_interpreter_size;
+ s->contents = (unsigned char *) htab->dynamic_interpreter;
}
}
else if (p->count != 0)
{
srel = elf_section_data (p->sec)->sreloc;
- srel->size += p->count * sizeof (Elf64_External_Rela);
- if ((p->sec->output_section->flags & SEC_READONLY) != 0)
- info->flags |= DF_TEXTREL;
+ srel->size += p->count * bed->s->sizeof_rela;
+ if ((p->sec->output_section->flags & SEC_READONLY) != 0
+ && (info->flags & DF_TEXTREL) == 0)
+ {
+ info->flags |= DF_TEXTREL;
+ if (info->warn_shared_textrel && info->shared)
+ info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'.\n"),
+ p->sec->owner, p->sec);
+ }
}
}
}
symtab_hdr = &elf_symtab_hdr (ibfd);
locsymcount = symtab_hdr->sh_info;
end_local_got = local_got + locsymcount;
- local_tls_type = elf64_x86_64_local_got_tls_type (ibfd);
- local_tlsdesc_gotent = elf64_x86_64_local_tlsdesc_gotent (ibfd);
+ local_tls_type = elf_x86_64_local_got_tls_type (ibfd);
+ local_tlsdesc_gotent = elf_x86_64_local_tlsdesc_gotent (ibfd);
s = htab->elf.sgot;
srel = htab->elf.srelgot;
for (; local_got < end_local_got;
if (GOT_TLS_GDESC_P (*local_tls_type))
{
*local_tlsdesc_gotent = htab->elf.sgotplt->size
- - elf64_x86_64_compute_jump_table_size (htab);
+ - elf_x86_64_compute_jump_table_size (htab);
htab->elf.sgotplt->size += 2 * GOT_ENTRY_SIZE;
*local_got = (bfd_vma) -2;
}
if (GOT_TLS_GDESC_P (*local_tls_type))
{
htab->elf.srelplt->size
- += sizeof (Elf64_External_Rela);
+ += bed->s->sizeof_rela;
htab->tlsdesc_plt = (bfd_vma) -1;
}
if (! GOT_TLS_GDESC_P (*local_tls_type)
|| GOT_TLS_GD_P (*local_tls_type))
- srel->size += sizeof (Elf64_External_Rela);
+ srel->size += bed->s->sizeof_rela;
}
}
else
relocs. */
htab->tls_ld_got.offset = htab->elf.sgot->size;
htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
- htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
+ htab->elf.srelgot->size += bed->s->sizeof_rela;
}
else
htab->tls_ld_got.offset = -1;
/* Allocate global sym .plt and .got entries, and space for global
sym dynamic relocs. */
- elf_link_hash_traverse (&htab->elf, elf64_x86_64_allocate_dynrelocs,
+ elf_link_hash_traverse (&htab->elf, elf_x86_64_allocate_dynrelocs,
info);
/* Allocate .plt and .got entries, and space for local symbols. */
htab_traverse (htab->loc_hash_table,
- elf64_x86_64_allocate_local_dynrelocs,
+ elf_x86_64_allocate_local_dynrelocs,
info);
/* For every jump slot reserved in the sgotplt, reloc_count is
incremented. However, when we reserve space for TLS descriptors,
it's not incremented, so in order to compute the space reserved
for them, it suffices to multiply the reloc count by the jump
- slot size. */
+ slot size.
+
+ PR ld/13302: We start next_irelative_index at the end of .rela.plt
+ so that R_X86_64_IRELATIVE entries come last. */
if (htab->elf.srelplt)
- htab->sgotplt_jump_table_size
- = elf64_x86_64_compute_jump_table_size (htab);
+ {
+ htab->sgotplt_jump_table_size
+ = elf_x86_64_compute_jump_table_size (htab);
+ htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
+ }
+ else if (htab->elf.irelplt)
+ htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
if (htab->tlsdesc_plt)
{
/* Reserve room for the initial entry.
FIXME: we could probably do away with it in this case. */
if (htab->elf.splt->size == 0)
- htab->elf.splt->size += PLT_ENTRY_SIZE;
+ htab->elf.splt->size += GET_PLT_ENTRY_SIZE (output_bfd);
htab->tlsdesc_plt = htab->elf.splt->size;
- htab->elf.splt->size += PLT_ENTRY_SIZE;
+ htab->elf.splt->size += GET_PLT_ENTRY_SIZE (output_bfd);
}
}
if (htab->elf.sgotplt)
{
+ struct elf_link_hash_entry *got;
+ got = elf_link_hash_lookup (elf_hash_table (info),
+ "_GLOBAL_OFFSET_TABLE_",
+ FALSE, FALSE, FALSE);
+
/* Don't allocate .got.plt section if there are no GOT nor PLT
- entries. */
- if ((htab->elf.sgotplt->size
- == get_elf_backend_data (output_bfd)->got_header_size)
+ entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */
+ if ((got == NULL
+ || !got->ref_regular_nonweak)
+ && (htab->elf.sgotplt->size
+ == get_elf_backend_data (output_bfd)->got_header_size)
&& (htab->elf.splt == NULL
|| htab->elf.splt->size == 0)
&& (htab->elf.sgot == NULL
return FALSE;
}
+ if (htab->plt_eh_frame != NULL
+ && htab->elf.splt != NULL
+ && htab->elf.splt->size != 0
+ && (htab->elf.splt->flags & SEC_EXCLUDE) == 0)
+ bfd_put_32 (dynobj, htab->elf.splt->size,
+ htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
+
if (htab->elf.dynamic_sections_created)
{
/* Add some entries to the .dynamic section. We fill in the
- values later, in elf64_x86_64_finish_dynamic_sections, but we
+ values later, in elf_x86_64_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 (!add_dynamic_entry (DT_RELA, 0)
|| !add_dynamic_entry (DT_RELASZ, 0)
- || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
+ || !add_dynamic_entry (DT_RELAENT, bed->s->sizeof_rela))
return FALSE;
/* If any dynamic relocs apply to a read-only section,
then we need a DT_TEXTREL entry. */
if ((info->flags & DF_TEXTREL) == 0)
- elf_link_hash_traverse (&htab->elf,
- elf64_x86_64_readonly_dynrelocs,
+ elf_link_hash_traverse (&htab->elf,
+ elf_x86_64_readonly_dynrelocs,
info);
if ((info->flags & DF_TEXTREL) != 0)
}
static bfd_boolean
-elf64_x86_64_always_size_sections (bfd *output_bfd,
- struct bfd_link_info *info)
+elf_x86_64_always_size_sections (bfd *output_bfd,
+ struct bfd_link_info *info)
{
asection *tls_sec = elf_hash_table (info)->tls_sec;
if (tlsbase && tlsbase->type == STT_TLS)
{
- struct elf64_x86_64_link_hash_table *htab;
+ struct elf_x86_64_link_hash_table *htab;
struct bfd_link_hash_entry *bh = NULL;
const struct elf_backend_data *bed
= get_elf_backend_data (output_bfd);
- htab = elf64_x86_64_hash_table (info);
+ htab = elf_x86_64_hash_table (info);
if (htab == NULL)
return FALSE;
multiple times, it is idempotent. */
static void
-elf64_x86_64_set_tls_module_base (struct bfd_link_info *info)
+elf_x86_64_set_tls_module_base (struct bfd_link_info *info)
{
- struct elf64_x86_64_link_hash_table *htab;
+ struct elf_x86_64_link_hash_table *htab;
struct bfd_link_hash_entry *base;
if (!info->executable)
return;
- htab = elf64_x86_64_hash_table (info);
+ htab = elf_x86_64_hash_table (info);
if (htab == NULL)
return;
This is PT_TLS segment p_vaddr. */
static bfd_vma
-elf64_x86_64_dtpoff_base (struct bfd_link_info *info)
+elf_x86_64_dtpoff_base (struct bfd_link_info *info)
{
/* If tls_sec is NULL, we should have signalled an error already. */
if (elf_hash_table (info)->tls_sec == NULL)
if STT_TLS virtual address is ADDRESS. */
static bfd_vma
-elf64_x86_64_tpoff (struct bfd_link_info *info, bfd_vma address)
+elf_x86_64_tpoff (struct bfd_link_info *info, bfd_vma address)
{
struct elf_link_hash_table *htab = elf_hash_table (info);
+ const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
+ bfd_vma static_tls_size;
/* If tls_segment is NULL, we should have signalled an error already. */
if (htab->tls_sec == NULL)
return 0;
- return address - htab->tls_size - htab->tls_sec->vma;
+
+ /* Consider special static TLS alignment requirements. */
+ static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
+ return address - static_tls_size - htab->tls_sec->vma;
}
/* Is the instruction before OFFSET in CONTENTS a 32bit relative
&& (contents [offset - 1] & 0xf0) == 0x80));
}
-static void
-elf64_x86_64_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
-{
- bfd_byte *loc = s->contents;
- loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
- BFD_ASSERT (loc + sizeof (Elf64_External_Rela)
- <= s->contents + s->size);
- bfd_elf64_swap_reloca_out (abfd, rel, loc);
-}
-
/* Relocate an x86_64 ELF section. */
static bfd_boolean
-elf64_x86_64_relocate_section (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_x86_64_relocate_section (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)
{
- struct elf64_x86_64_link_hash_table *htab;
+ struct elf_x86_64_link_hash_table *htab;
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
bfd_vma *local_got_offsets;
bfd_vma *local_tlsdesc_gotents;
Elf_Internal_Rela *rel;
Elf_Internal_Rela *relend;
+ const unsigned int plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
BFD_ASSERT (is_x86_64_elf (input_bfd));
- htab = elf64_x86_64_hash_table (info);
+ htab = elf_x86_64_hash_table (info);
if (htab == NULL)
return FALSE;
symtab_hdr = &elf_symtab_hdr (input_bfd);
sym_hashes = elf_sym_hashes (input_bfd);
local_got_offsets = elf_local_got_offsets (input_bfd);
- local_tlsdesc_gotents = elf64_x86_64_local_tlsdesc_gotent (input_bfd);
+ local_tlsdesc_gotents = elf_x86_64_local_tlsdesc_gotent (input_bfd);
- elf64_x86_64_set_tls_module_base (info);
+ elf_x86_64_set_tls_module_base (info);
rel = relocs;
relend = relocs + input_section->reloc_count;
int tls_type;
asection *base_got;
- r_type = ELF64_R_TYPE (rel->r_info);
+ r_type = ELF32_R_TYPE (rel->r_info);
if (r_type == (int) R_X86_64_GNU_VTINHERIT
|| r_type == (int) R_X86_64_GNU_VTENTRY)
continue;
return FALSE;
}
- howto = x86_64_elf_howto_table + r_type;
- r_symndx = ELF64_R_SYM (rel->r_info);
+ if (r_type != (int) R_X86_64_32
+ || ABI_64_P (output_bfd))
+ howto = x86_64_elf_howto_table + r_type;
+ else
+ howto = (x86_64_elf_howto_table
+ + ARRAY_SIZE (x86_64_elf_howto_table) - 1);
+ r_symndx = htab->r_sym (rel->r_info);
h = NULL;
sym = NULL;
sec = NULL;
/* Relocate against local STT_GNU_IFUNC symbol. */
if (!info->relocatable
- && ELF64_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
+ && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
{
- h = elf64_x86_64_get_local_sym_hash (htab, input_bfd,
- rel, FALSE);
+ h = elf_x86_64_get_local_sym_hash (htab, input_bfd,
+ rel, FALSE);
if (h == NULL)
abort ();
- /* Set STT_GNU_IFUNC symbol value. */
+ /* Set STT_GNU_IFUNC symbol value. */
h->root.u.def.value = sym->st_value;
h->root.u.def.section = sec;
}
unresolved_reloc, warned);
}
- if (sec != NULL && elf_discarded_section (sec))
+ if (sec != NULL && discarded_section (sec))
RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
- rel, relend, howto, contents);
+ rel, 1, relend, howto, 0, contents);
if (info->relocatable)
continue;
+ if (rel->r_addend == 0
+ && r_type == R_X86_64_64
+ && !ABI_64_P (output_bfd))
+ {
+ /* For x32, treat R_X86_64_64 like R_X86_64_32 and zero-extend
+ it to 64bit if addend is zero. */
+ r_type = R_X86_64_32;
+ memset (contents + rel->r_offset + 4, 0, 4);
+ }
+
/* Since STT_GNU_IFUNC symbol must go through PLT, we handle
it here if it is defined in a non-shared object. */
if (h != NULL
abort ();
goto do_relocation;
- case R_X86_64_64:
+ case R_X86_64_32:
+ if (ABI_64_P (output_bfd))
+ goto do_relocation;
+ /* FALLTHROUGH */
+ case R_X86_64_64:
if (rel->r_addend != 0)
{
if (h->root.root.string)
}
/* Generate dynamic relcoation only when there is a
- non-GOF reference in a shared object. */
+ non-GOT reference in a shared object. */
if (info->shared && h->non_got_ref)
{
Elf_Internal_Rela outrel;
|| info->executable)
{
/* This symbol is resolved locally. */
- outrel.r_info = ELF64_R_INFO (0, R_X86_64_IRELATIVE);
+ outrel.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
outrel.r_addend = (h->root.u.def.value
+ h->root.u.def.section->output_section->vma
+ h->root.u.def.section->output_offset);
}
else
{
- outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
+ outrel.r_info = htab->r_info (h->dynindx, r_type);
outrel.r_addend = 0;
}
sreloc = htab->elf.irelifunc;
- elf64_x86_64_append_rela (output_bfd, sreloc, &outrel);
+ elf_append_rela (output_bfd, sreloc, &outrel);
/* If this reloc is against an external symbol, we
do not want to fiddle with the addend. Otherwise,
internal symbol, we have updated addend. */
continue;
}
-
- case R_X86_64_32:
+ /* FALLTHROUGH */
case R_X86_64_PC32:
case R_X86_64_PC64:
case R_X86_64_PLT32:
if (htab->elf.splt != NULL)
{
- plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
+ plt_index = h->plt.offset / plt_entry_size - 1;
off = (plt_index + 3) * GOT_ENTRY_SIZE;
base_got = htab->elf.sgotplt;
}
else
{
- plt_index = h->plt.offset / PLT_ENTRY_SIZE;
+ plt_index = h->plt.offset / plt_entry_size;
off = plt_index * GOT_ENTRY_SIZE;
base_got = htab->elf.igotplt;
}
|| h->forced_local
|| info->symbolic)
{
- /* This references the local defitionion. We must
+ /* This references the local defitionion. We must
initialize this entry in the global offset table.
- Since the offset must always be a multiple of 8,
+ Since the offset must always be a multiple of 8,
we use the least significant bit to record
whether we have initialized it already.
relocation = (base_got->output_section->vma
+ base_got->output_offset + off);
- if (r_type != R_X86_64_GOTPCREL
- && r_type != R_X86_64_GOTPCREL64)
- {
- asection *gotplt;
- if (htab->elf.splt != NULL)
- gotplt = htab->elf.sgotplt;
- else
- gotplt = htab->elf.igotplt;
- relocation -= (gotplt->output_section->vma
- - gotplt->output_offset);
- }
-
goto do_relocation;
}
}
off = h->got.offset;
if (h->needs_plt
- && h->plt.offset != (bfd_vma)-1
+ && h->plt.offset != (bfd_vma)-1
&& off == (bfd_vma)-1)
{
/* We can't use h->got.offset here to save
state, or even just remember the offset, as
finish_dynamic_symbol would use that as offset into
.got. */
- bfd_vma plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
+ bfd_vma plt_index = h->plt.offset / plt_entry_size - 1;
off = (plt_index + 3) * GOT_ENTRY_SIZE;
base_got = htab->elf.sgotplt;
}
bfd_put_64 (output_bfd, relocation,
base_got->contents + off);
/* Note that this is harmless for the GOTPLT64 case,
- as -1 | 1 still is -1. */
+ as -1 | 1 still is -1. */
h->got.offset |= 1;
}
}
outrel.r_offset = (base_got->output_section->vma
+ base_got->output_offset
+ off);
- outrel.r_info = ELF64_R_INFO (0, R_X86_64_RELATIVE);
+ outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
outrel.r_addend = relocation;
- elf64_x86_64_append_rela (output_bfd, s, &outrel);
+ elf_append_rela (output_bfd, s, &outrel);
}
local_got_offsets[r_symndx] |= 1;
/* Check to make sure it isn't a protected function symbol
for shared library since it may not be local when used
as function address. */
- if (info->shared
+ if (!info->executable
&& h
+ && !SYMBOLIC_BIND (info, h)
&& h->def_regular
&& h->type == STT_FUNC
&& ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
case R_X86_64_PLTOFF64:
/* Relocation is PLT entry relative to GOT. For local
symbols it's the symbol itself relative to GOT. */
- if (h != NULL
+ if (h != NULL
/* See PLT32 handling. */
&& h->plt.offset != (bfd_vma) -1
&& htab->elf.splt != NULL)
|| ! SYMBOLIC_BIND (info, h)
|| ! h->def_regular))
{
- outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
+ outrel.r_info = htab->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_X86_64_64)
+ if (r_type == htab->pointer_r_type)
+ {
+ relocate = TRUE;
+ outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
+ outrel.r_addend = relocation + rel->r_addend;
+ }
+ else if (r_type == R_X86_64_64
+ && !ABI_64_P (output_bfd))
{
relocate = TRUE;
- outrel.r_info = ELF64_R_INFO (0, R_X86_64_RELATIVE);
+ outrel.r_info = htab->r_info (0,
+ R_X86_64_RELATIVE64);
outrel.r_addend = relocation + rel->r_addend;
+ /* Check addend overflow. */
+ if ((outrel.r_addend & 0x80000000)
+ != (rel->r_addend & 0x80000000))
+ {
+ const char *name;
+ if (h && h->root.root.string)
+ name = h->root.root.string;
+ else
+ name = bfd_elf_sym_name (input_bfd, symtab_hdr,
+ sym, NULL);
+ (*_bfd_error_handler)
+ (_("%B: addend %ld in relocation %s against "
+ "symbol `%s' at 0x%lx in section `%A' is "
+ "out of range"),
+ input_bfd, input_section,
+ (long) rel->r_addend,
+ x86_64_elf_howto_table[r_type].name,
+ name, (unsigned long) rel->r_offset);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
}
else
{
BFD_ASSERT (sindx != 0);
}
- outrel.r_info = ELF64_R_INFO (sindx, r_type);
+ outrel.r_info = htab->r_info (sindx, r_type);
outrel.r_addend = relocation + rel->r_addend;
}
}
sreloc = elf_section_data (input_section)->sreloc;
- BFD_ASSERT (sreloc != NULL && sreloc->contents != NULL);
+ if (sreloc == NULL || sreloc->contents == NULL)
+ {
+ r = bfd_reloc_notsupported;
+ goto check_relocation_error;
+ }
- elf64_x86_64_append_rela (output_bfd, sreloc, &outrel);
+ elf_append_rela (output_bfd, sreloc, &outrel);
/* If this reloc is against an external symbol, we do
not want to fiddle with the addend. Otherwise, we
case R_X86_64_GOTTPOFF:
tls_type = GOT_UNKNOWN;
if (h == NULL && local_got_offsets)
- tls_type = elf64_x86_64_local_got_tls_type (input_bfd) [r_symndx];
+ tls_type = elf_x86_64_local_got_tls_type (input_bfd) [r_symndx];
else if (h != NULL)
- tls_type = elf64_x86_64_hash_entry (h)->tls_type;
+ tls_type = elf_x86_64_hash_entry (h)->tls_type;
- if (! elf64_x86_64_tls_transition (info, input_bfd,
- input_section, contents,
- symtab_hdr, sym_hashes,
- &r_type, tls_type, rel,
- relend, h, r_symndx))
+ if (! elf_x86_64_tls_transition (info, input_bfd,
+ input_section, contents,
+ symtab_hdr, sym_hashes,
+ &r_type, tls_type, rel,
+ relend, h, r_symndx))
return FALSE;
if (r_type == R_X86_64_TPOFF32)
BFD_ASSERT (! unresolved_reloc);
- if (ELF64_R_TYPE (rel->r_info) == R_X86_64_TLSGD)
+ if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSGD)
{
- /* GD->LE transition.
+ /* GD->LE transition. For 64bit, change
.byte 0x66; leaq foo@tlsgd(%rip), %rdi
.word 0x6666; rex64; call __tls_get_addr
- Change it into:
+ into:
movq %fs:0, %rax
+ leaq foo@tpoff(%rax), %rax
+ For 32bit, change
+ leaq foo@tlsgd(%rip), %rdi
+ .word 0x6666; rex64; call __tls_get_addr
+ into:
+ movl %fs:0, %eax
leaq foo@tpoff(%rax), %rax */
- memcpy (contents + roff - 4,
- "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
- 16);
+ if (ABI_64_P (output_bfd))
+ memcpy (contents + roff - 4,
+ "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
+ 16);
+ else
+ memcpy (contents + roff - 3,
+ "\x64\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
+ 15);
bfd_put_32 (output_bfd,
- elf64_x86_64_tpoff (info, relocation),
+ elf_x86_64_tpoff (info, relocation),
contents + roff + 8);
/* Skip R_X86_64_PC32/R_X86_64_PLT32. */
rel++;
continue;
}
- else if (ELF64_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC)
+ else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC)
{
/* GDesc -> LE transition.
It's originally something like:
bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
contents + roff - 1);
bfd_put_32 (output_bfd,
- elf64_x86_64_tpoff (info, relocation),
+ elf_x86_64_tpoff (info, relocation),
contents + roff);
continue;
}
- else if (ELF64_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL)
+ else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL)
{
/* GDesc -> LE transition.
It's originally:
bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
continue;
}
- else if (ELF64_R_TYPE (rel->r_info) == R_X86_64_GOTTPOFF)
+ else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTTPOFF)
{
/* IE->LE transition:
Originally it can be one of:
if (val == 0x4c)
bfd_put_8 (output_bfd, 0x49,
contents + roff - 3);
+ else if (!ABI_64_P (output_bfd) && val == 0x44)
+ bfd_put_8 (output_bfd, 0x41,
+ contents + roff - 3);
bfd_put_8 (output_bfd, 0xc7,
contents + roff - 2);
bfd_put_8 (output_bfd, 0xc0 | reg,
if (val == 0x4c)
bfd_put_8 (output_bfd, 0x49,
contents + roff - 3);
+ else if (!ABI_64_P (output_bfd) && val == 0x44)
+ bfd_put_8 (output_bfd, 0x41,
+ contents + roff - 3);
bfd_put_8 (output_bfd, 0x81,
contents + roff - 2);
bfd_put_8 (output_bfd, 0xc0 | reg,
if (val == 0x4c)
bfd_put_8 (output_bfd, 0x4d,
contents + roff - 3);
+ else if (!ABI_64_P (output_bfd) && val == 0x44)
+ bfd_put_8 (output_bfd, 0x45,
+ contents + roff - 3);
bfd_put_8 (output_bfd, 0x8d,
contents + roff - 2);
bfd_put_8 (output_bfd, 0x80 | reg | (reg << 3),
contents + roff - 1);
}
bfd_put_32 (output_bfd,
- elf64_x86_64_tpoff (info, relocation),
+ elf_x86_64_tpoff (info, relocation),
contents + roff);
continue;
}
if (h != NULL)
{
off = h->got.offset;
- offplt = elf64_x86_64_hash_entry (h)->tlsdesc_got;
+ offplt = elf_x86_64_hash_entry (h)->tlsdesc_got;
}
else
{
if (GOT_TLS_GDESC_P (tls_type))
{
- outrel.r_info = ELF64_R_INFO (indx, R_X86_64_TLSDESC);
+ outrel.r_info = htab->r_info (indx, R_X86_64_TLSDESC);
BFD_ASSERT (htab->sgotplt_jump_table_size + offplt
+ 2 * GOT_ENTRY_SIZE <= htab->elf.sgotplt->size);
outrel.r_offset = (htab->elf.sgotplt->output_section->vma
+ htab->sgotplt_jump_table_size);
sreloc = htab->elf.srelplt;
if (indx == 0)
- outrel.r_addend = relocation - elf64_x86_64_dtpoff_base (info);
+ outrel.r_addend = relocation - elf_x86_64_dtpoff_base (info);
else
outrel.r_addend = 0;
- elf64_x86_64_append_rela (output_bfd, sreloc, &outrel);
+ elf_append_rela (output_bfd, sreloc, &outrel);
}
sreloc = htab->elf.srelgot;
outrel.r_addend = 0;
if ((dr_type == R_X86_64_TPOFF64
|| dr_type == R_X86_64_TLSDESC) && indx == 0)
- outrel.r_addend = relocation - elf64_x86_64_dtpoff_base (info);
- outrel.r_info = ELF64_R_INFO (indx, dr_type);
+ outrel.r_addend = relocation - elf_x86_64_dtpoff_base (info);
+ outrel.r_info = htab->r_info (indx, dr_type);
- elf64_x86_64_append_rela (output_bfd, sreloc, &outrel);
+ elf_append_rela (output_bfd, sreloc, &outrel);
if (GOT_TLS_GD_P (tls_type))
{
{
BFD_ASSERT (! unresolved_reloc);
bfd_put_64 (output_bfd,
- relocation - elf64_x86_64_dtpoff_base (info),
+ relocation - elf_x86_64_dtpoff_base (info),
htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
}
else
{
bfd_put_64 (output_bfd, 0,
htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
- outrel.r_info = ELF64_R_INFO (indx,
+ outrel.r_info = htab->r_info (indx,
R_X86_64_DTPOFF64);
outrel.r_offset += GOT_ENTRY_SIZE;
- elf64_x86_64_append_rela (output_bfd, sreloc,
+ elf_append_rela (output_bfd, sreloc,
&outrel);
}
}
if (off >= (bfd_vma) -2
&& ! GOT_TLS_GDESC_P (tls_type))
abort ();
- if (r_type == ELF64_R_TYPE (rel->r_info))
+ if (r_type == ELF32_R_TYPE (rel->r_info))
{
if (r_type == R_X86_64_GOTPC32_TLSDESC
|| r_type == R_X86_64_TLSDESC_CALL)
{
bfd_vma roff = rel->r_offset;
- if (ELF64_R_TYPE (rel->r_info) == R_X86_64_TLSGD)
+ if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSGD)
{
- /* GD->IE transition.
+ /* GD->IE transition. For 64bit, change
.byte 0x66; leaq foo@tlsgd(%rip), %rdi
.word 0x6666; rex64; call __tls_get_addr@plt
- Change it into:
+ into:
movq %fs:0, %rax
+ addq foo@gottpoff(%rip), %rax
+ For 32bit, change
+ leaq foo@tlsgd(%rip), %rdi
+ .word 0x6666; rex64; call __tls_get_addr@plt
+ into:
+ movl %fs:0, %eax
addq foo@gottpoff(%rip), %rax */
- memcpy (contents + roff - 4,
- "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
- 16);
+ if (ABI_64_P (output_bfd))
+ memcpy (contents + roff - 4,
+ "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
+ 16);
+ else
+ memcpy (contents + roff - 3,
+ "\x64\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
+ 15);
relocation = (htab->elf.sgot->output_section->vma
+ htab->elf.sgot->output_offset + off
rel++;
continue;
}
- else if (ELF64_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC)
+ else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC)
{
/* GDesc -> IE transition.
It's originally something like:
contents + roff);
continue;
}
- else if (ELF64_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL)
+ else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL)
{
/* GDesc -> IE transition.
It's originally:
break;
case R_X86_64_TLSLD:
- if (! elf64_x86_64_tls_transition (info, input_bfd,
- input_section, contents,
- symtab_hdr, sym_hashes,
- &r_type, GOT_UNKNOWN,
- rel, relend, h, r_symndx))
+ if (! elf_x86_64_tls_transition (info, input_bfd,
+ input_section, contents,
+ symtab_hdr, sym_hashes,
+ &r_type, GOT_UNKNOWN,
+ rel, relend, h, r_symndx))
return FALSE;
if (r_type != R_X86_64_TLSLD)
{
/* LD->LE transition:
leaq foo@tlsld(%rip), %rdi; call __tls_get_addr.
- We change it into:
- .word 0x6666; .byte 0x66; movl %fs:0, %rax. */
+ For 64bit, we change it into:
+ .word 0x6666; .byte 0x66; movq %fs:0, %rax.
+ For 32bit, we change it into:
+ nopl 0x0(%rax); movl %fs:0, %eax. */
BFD_ASSERT (r_type == R_X86_64_TPOFF32);
- memcpy (contents + rel->r_offset - 3,
- "\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12);
+ if (ABI_64_P (output_bfd))
+ memcpy (contents + rel->r_offset - 3,
+ "\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12);
+ else
+ memcpy (contents + rel->r_offset - 3,
+ "\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0", 12);
/* Skip R_X86_64_PC32/R_X86_64_PLT32. */
rel++;
continue;
htab->elf.sgot->contents + off);
bfd_put_64 (output_bfd, 0,
htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
- outrel.r_info = ELF64_R_INFO (0, R_X86_64_DTPMOD64);
+ outrel.r_info = htab->r_info (0, R_X86_64_DTPMOD64);
outrel.r_addend = 0;
- elf64_x86_64_append_rela (output_bfd, htab->elf.srelgot,
+ elf_append_rela (output_bfd, htab->elf.srelgot,
&outrel);
htab->tls_ld_got.offset |= 1;
}
case R_X86_64_DTPOFF32:
if (!info->executable|| (input_section->flags & SEC_CODE) == 0)
- relocation -= elf64_x86_64_dtpoff_base (info);
+ relocation -= elf_x86_64_dtpoff_base (info);
else
- relocation = elf64_x86_64_tpoff (info, relocation);
+ relocation = elf_x86_64_tpoff (info, relocation);
break;
case R_X86_64_TPOFF32:
+ case R_X86_64_TPOFF64:
BFD_ASSERT (info->executable);
- relocation = elf64_x86_64_tpoff (info, relocation);
+ relocation = elf_x86_64_tpoff (info, relocation);
break;
default:
not process them. */
if (unresolved_reloc
&& !((input_section->flags & SEC_DEBUGGING) != 0
- && h->def_dynamic))
+ && h->def_dynamic)
+ && _bfd_elf_section_offset (output_bfd, info, input_section,
+ rel->r_offset) != (bfd_vma) -1)
(*_bfd_error_handler)
(_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
input_bfd,
contents, rel->r_offset,
relocation, rel->r_addend);
+check_relocation_error:
if (r != bfd_reloc_ok)
{
const char *name;
dynamic sections here. */
static bfd_boolean
-elf64_x86_64_finish_dynamic_symbol (bfd *output_bfd,
- struct bfd_link_info *info,
- struct elf_link_hash_entry *h,
- Elf_Internal_Sym *sym)
+elf_x86_64_finish_dynamic_symbol (bfd *output_bfd,
+ struct bfd_link_info *info,
+ struct elf_link_hash_entry *h,
+ Elf_Internal_Sym *sym)
{
- struct elf64_x86_64_link_hash_table *htab;
+ struct elf_x86_64_link_hash_table *htab;
+ const struct elf_x86_64_backend_data *const abed
+ = get_elf_x86_64_backend_data (output_bfd);
- htab = elf64_x86_64_hash_table (info);
+ htab = elf_x86_64_hash_table (info);
if (htab == NULL)
return FALSE;
Elf_Internal_Rela rela;
bfd_byte *loc;
asection *plt, *gotplt, *relplt;
+ const struct elf_backend_data *bed;
/* When building a static executable, use .iplt, .igot.plt and
.rela.iplt sections for STT_GNU_IFUNC symbols. */
|| plt == NULL
|| gotplt == NULL
|| relplt == NULL)
- abort ();
+ return FALSE;
/* Get the index in the procedure linkage table which
corresponds to this symbol. This is the index of this symbol
if (plt == htab->elf.splt)
{
- plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
- got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
+ got_offset = h->plt.offset / abed->plt_entry_size - 1;
+ got_offset = (got_offset + 3) * GOT_ENTRY_SIZE;
}
else
{
- plt_index = h->plt.offset / PLT_ENTRY_SIZE;
- got_offset = plt_index * GOT_ENTRY_SIZE;
+ got_offset = h->plt.offset / abed->plt_entry_size;
+ got_offset = got_offset * GOT_ENTRY_SIZE;
}
/* Fill in the entry in the procedure linkage table. */
- memcpy (plt->contents + h->plt.offset, elf64_x86_64_plt_entry,
- PLT_ENTRY_SIZE);
-
- /* Insert the relocation positions of the plt section. The magic
- numbers at the end of the statements are the positions of the
- relocations in the plt section. */
- /* Put offset for jmp *name@GOTPCREL(%rip), since the
- instruction uses 6 bytes, subtract this value. */
- bfd_put_32 (output_bfd,
- (gotplt->output_section->vma
- + gotplt->output_offset
- + got_offset
- - plt->output_section->vma
- - plt->output_offset
- - h->plt.offset
- - 6),
- plt->contents + h->plt.offset + 2);
+ memcpy (plt->contents + h->plt.offset, abed->plt_entry,
+ abed->plt_entry_size);
- /* Don't fill PLT entry for static executables. */
- if (plt == htab->elf.splt)
- {
- /* Put relocation index. */
- bfd_put_32 (output_bfd, plt_index,
- plt->contents + h->plt.offset + 7);
- /* Put offset for jmp .PLT0. */
- bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE),
- plt->contents + h->plt.offset + 12);
- }
+ /* Insert the relocation positions of the plt section. */
+
+ /* Put offset the PC-relative instruction referring to the GOT entry,
+ subtracting the size of that instruction. */
+ bfd_put_32 (output_bfd,
+ (gotplt->output_section->vma
+ + gotplt->output_offset
+ + got_offset
+ - plt->output_section->vma
+ - plt->output_offset
+ - h->plt.offset
+ - abed->plt_got_insn_size),
+ plt->contents + h->plt.offset + abed->plt_got_offset);
/* Fill in the entry in the global offset table, initially this
- points to the pushq instruction in the PLT which is at offset 6. */
+ points to the second part of the PLT entry. */
bfd_put_64 (output_bfd, (plt->output_section->vma
+ plt->output_offset
- + h->plt.offset + 6),
+ + h->plt.offset + abed->plt_lazy_offset),
gotplt->contents + got_offset);
/* Fill in the entry in the .rela.plt section. */
{
/* If an STT_GNU_IFUNC symbol is locally defined, generate
R_X86_64_IRELATIVE instead of R_X86_64_JUMP_SLOT. */
- rela.r_info = ELF64_R_INFO (0, R_X86_64_IRELATIVE);
+ rela.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
rela.r_addend = (h->root.u.def.value
+ h->root.u.def.section->output_section->vma
+ h->root.u.def.section->output_offset);
+ /* R_X86_64_IRELATIVE comes last. */
+ plt_index = htab->next_irelative_index--;
}
else
{
- rela.r_info = ELF64_R_INFO (h->dynindx, R_X86_64_JUMP_SLOT);
+ rela.r_info = htab->r_info (h->dynindx, R_X86_64_JUMP_SLOT);
rela.r_addend = 0;
+ plt_index = htab->next_jump_slot_index++;
}
- loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela);
- bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
+
+ /* Don't fill PLT entry for static executables. */
+ if (plt == htab->elf.splt)
+ {
+ /* Put relocation index. */
+ bfd_put_32 (output_bfd, plt_index,
+ plt->contents + h->plt.offset + abed->plt_reloc_offset);
+ /* Put offset for jmp .PLT0. */
+ bfd_put_32 (output_bfd, - (h->plt.offset + abed->plt_plt_insn_end),
+ plt->contents + h->plt.offset + abed->plt_plt_offset);
+ }
+
+ bed = get_elf_backend_data (output_bfd);
+ loc = relplt->contents + plt_index * bed->s->sizeof_rela;
+ bed->s->swap_reloca_out (output_bfd, &rela, loc);
if (!h->def_regular)
{
}
if (h->got.offset != (bfd_vma) -1
- && ! GOT_TLS_GD_ANY_P (elf64_x86_64_hash_entry (h)->tls_type)
- && elf64_x86_64_hash_entry (h)->tls_type != GOT_TLS_IE)
+ && ! GOT_TLS_GD_ANY_P (elf_x86_64_hash_entry (h)->tls_type)
+ && elf_x86_64_hash_entry (h)->tls_type != GOT_TLS_IE)
{
Elf_Internal_Rela rela;
if (!h->def_regular)
return FALSE;
BFD_ASSERT((h->got.offset & 1) != 0);
- rela.r_info = ELF64_R_INFO (0, R_X86_64_RELATIVE);
+ rela.r_info = htab->r_info (0, R_X86_64_RELATIVE);
rela.r_addend = (h->root.u.def.value
+ h->root.u.def.section->output_section->vma
+ h->root.u.def.section->output_offset);
do_glob_dat:
bfd_put_64 (output_bfd, (bfd_vma) 0,
htab->elf.sgot->contents + h->got.offset);
- rela.r_info = ELF64_R_INFO (h->dynindx, R_X86_64_GLOB_DAT);
+ rela.r_info = htab->r_info (h->dynindx, R_X86_64_GLOB_DAT);
rela.r_addend = 0;
}
- elf64_x86_64_append_rela (output_bfd, htab->elf.srelgot, &rela);
+ elf_append_rela (output_bfd, htab->elf.srelgot, &rela);
}
if (h->needs_copy)
rela.r_offset = (h->root.u.def.value
+ h->root.u.def.section->output_section->vma
+ h->root.u.def.section->output_offset);
- rela.r_info = ELF64_R_INFO (h->dynindx, R_X86_64_COPY);
+ rela.r_info = htab->r_info (h->dynindx, R_X86_64_COPY);
rela.r_addend = 0;
- elf64_x86_64_append_rela (output_bfd, htab->srelbss, &rela);
+ elf_append_rela (output_bfd, htab->srelbss, &rela);
}
/* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may
various dynamic sections here. */
static bfd_boolean
-elf64_x86_64_finish_local_dynamic_symbol (void **slot, void *inf)
+elf_x86_64_finish_local_dynamic_symbol (void **slot, void *inf)
{
struct elf_link_hash_entry *h
= (struct elf_link_hash_entry *) *slot;
struct bfd_link_info *info
- = (struct bfd_link_info *) inf;
+ = (struct bfd_link_info *) inf;
- return elf64_x86_64_finish_dynamic_symbol (info->output_bfd,
+ return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
info, h, NULL);
}
dynamic linker, before writing them out. */
static enum elf_reloc_type_class
-elf64_x86_64_reloc_type_class (const Elf_Internal_Rela *rela)
+elf_x86_64_reloc_type_class (const Elf_Internal_Rela *rela)
{
- switch ((int) ELF64_R_TYPE (rela->r_info))
+ switch ((int) ELF32_R_TYPE (rela->r_info))
{
case R_X86_64_RELATIVE:
return reloc_class_relative;
/* Finish up the dynamic sections. */
static bfd_boolean
-elf64_x86_64_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
+elf_x86_64_finish_dynamic_sections (bfd *output_bfd,
+ struct bfd_link_info *info)
{
- struct elf64_x86_64_link_hash_table *htab;
+ struct elf_x86_64_link_hash_table *htab;
bfd *dynobj;
asection *sdyn;
+ const struct elf_x86_64_backend_data *const abed
+ = get_elf_x86_64_backend_data (output_bfd);
- htab = elf64_x86_64_hash_table (info);
+ htab = elf_x86_64_hash_table (info);
if (htab == NULL)
return FALSE;
if (htab->elf.dynamic_sections_created)
{
- Elf64_External_Dyn *dyncon, *dynconend;
+ bfd_byte *dyncon, *dynconend;
+ const struct elf_backend_data *bed;
+ bfd_size_type sizeof_dyn;
if (sdyn == NULL || htab->elf.sgot == NULL)
abort ();
- dyncon = (Elf64_External_Dyn *) sdyn->contents;
- dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
- for (; dyncon < dynconend; dyncon++)
+ bed = get_elf_backend_data (dynobj);
+ sizeof_dyn = bed->s->sizeof_dyn;
+ dyncon = sdyn->contents;
+ dynconend = sdyn->contents + sdyn->size;
+ for (; dyncon < dynconend; dyncon += sizeof_dyn)
{
Elf_Internal_Dyn dyn;
asection *s;
- bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
+ (*bed->s->swap_dyn_in) (dynobj, dyncon, &dyn);
switch (dyn.d_tag)
{
break;
}
- bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
+ (*bed->s->swap_dyn_out) (output_bfd, &dyn, dyncon);
}
/* Fill in the special first entry in the procedure linkage table. */
if (htab->elf.splt && htab->elf.splt->size > 0)
{
/* Fill in the first entry in the procedure linkage table. */
- memcpy (htab->elf.splt->contents, elf64_x86_64_plt0_entry,
- PLT_ENTRY_SIZE);
+ memcpy (htab->elf.splt->contents,
+ abed->plt0_entry, abed->plt_entry_size);
/* Add offset for pushq GOT+8(%rip), since the instruction
uses 6 bytes subtract this value. */
bfd_put_32 (output_bfd,
- htab->elf.splt->output_section->vma
- htab->elf.splt->output_offset
- 6),
- htab->elf.splt->contents + 2);
- /* Add offset for jmp *GOT+16(%rip). The 12 is the offset to
- the end of the instruction. */
+ htab->elf.splt->contents + abed->plt0_got1_offset);
+ /* Add offset for the PC-relative instruction accessing GOT+16,
+ subtracting the offset to the end of that instruction. */
bfd_put_32 (output_bfd,
(htab->elf.sgotplt->output_section->vma
+ htab->elf.sgotplt->output_offset
+ 16
- htab->elf.splt->output_section->vma
- htab->elf.splt->output_offset
- - 12),
- htab->elf.splt->contents + 8);
+ - abed->plt0_got2_insn_end),
+ htab->elf.splt->contents + abed->plt0_got2_offset);
- elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize =
- PLT_ENTRY_SIZE;
+ elf_section_data (htab->elf.splt->output_section)
+ ->this_hdr.sh_entsize = abed->plt_entry_size;
if (htab->tlsdesc_plt)
{
htab->elf.sgot->contents + htab->tlsdesc_got);
memcpy (htab->elf.splt->contents + htab->tlsdesc_plt,
- elf64_x86_64_plt0_entry,
- PLT_ENTRY_SIZE);
+ abed->plt0_entry, abed->plt_entry_size);
/* Add offset for pushq GOT+8(%rip), since the
instruction uses 6 bytes subtract this value. */
- htab->elf.splt->output_offset
- htab->tlsdesc_plt
- 6),
- htab->elf.splt->contents + htab->tlsdesc_plt + 2);
- /* Add offset for jmp *GOT+TDG(%rip), where TGD stands for
- htab->tlsdesc_got. The 12 is the offset to the end of
- the instruction. */
+ htab->elf.splt->contents
+ + htab->tlsdesc_plt + abed->plt0_got1_offset);
+ /* Add offset for the PC-relative instruction accessing GOT+TDG,
+ where TGD stands for htab->tlsdesc_got, subtracting the offset
+ to the end of that instruction. */
bfd_put_32 (output_bfd,
(htab->elf.sgot->output_section->vma
+ htab->elf.sgot->output_offset
- htab->elf.splt->output_section->vma
- htab->elf.splt->output_offset
- htab->tlsdesc_plt
- - 12),
- htab->elf.splt->contents + htab->tlsdesc_plt + 8);
+ - abed->plt0_got2_insn_end),
+ htab->elf.splt->contents
+ + htab->tlsdesc_plt + abed->plt0_got2_offset);
}
}
}
GOT_ENTRY_SIZE;
}
+ /* Adjust .eh_frame for .plt section. */
+ if (htab->plt_eh_frame != NULL)
+ {
+ if (htab->elf.splt != NULL
+ && htab->elf.splt->size != 0
+ && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
+ && htab->elf.splt->output_section != NULL
+ && htab->plt_eh_frame->output_section != NULL)
+ {
+ bfd_vma plt_start = htab->elf.splt->output_section->vma;
+ bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
+ + htab->plt_eh_frame->output_offset
+ + PLT_FDE_START_OFFSET;
+ bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
+ htab->plt_eh_frame->contents
+ + PLT_FDE_START_OFFSET);
+ }
+ if (htab->plt_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME)
+ {
+ if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
+ htab->plt_eh_frame,
+ htab->plt_eh_frame->contents))
+ return FALSE;
+ }
+ }
+
if (htab->elf.sgot && htab->elf.sgot->size > 0)
elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize
= GOT_ENTRY_SIZE;
/* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
htab_traverse (htab->loc_hash_table,
- elf64_x86_64_finish_local_dynamic_symbol,
+ elf_x86_64_finish_local_dynamic_symbol,
info);
return TRUE;
or (bfd_vma) -1 if it should not be included. */
static bfd_vma
-elf64_x86_64_plt_sym_val (bfd_vma i, const asection *plt,
- const arelent *rel ATTRIBUTE_UNUSED)
+elf_x86_64_plt_sym_val (bfd_vma i, const asection *plt,
+ const arelent *rel ATTRIBUTE_UNUSED)
{
- return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
+ return plt->vma + (i + 1) * GET_PLT_ENTRY_SIZE (plt->owner);
}
/* Handle an x86-64 specific section when reading an object file. This
is called when elfcode.h finds a section with an unknown type. */
static bfd_boolean
-elf64_x86_64_section_from_shdr (bfd *abfd,
+elf_x86_64_section_from_shdr (bfd *abfd,
Elf_Internal_Shdr *hdr,
const char *name,
int shindex)
of .bss. */
static bfd_boolean
-elf64_x86_64_add_symbol_hook (bfd *abfd,
- struct bfd_link_info *info,
- Elf_Internal_Sym *sym,
- const char **namep ATTRIBUTE_UNUSED,
- flagword *flagsp ATTRIBUTE_UNUSED,
- asection **secp,
- bfd_vma *valp)
+elf_x86_64_add_symbol_hook (bfd *abfd,
+ struct bfd_link_info *info,
+ Elf_Internal_Sym *sym,
+ const char **namep ATTRIBUTE_UNUSED,
+ flagword *flagsp ATTRIBUTE_UNUSED,
+ asection **secp,
+ bfd_vma *valp)
{
asection *lcomm;
}
if ((abfd->flags & DYNAMIC) == 0
- && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
- elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE;
+ && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
+ || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
+ elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
return TRUE;
}
index. */
static bfd_boolean
-elf64_x86_64_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
- asection *sec, int *index_return)
+elf_x86_64_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
+ asection *sec, int *index_return)
{
if (sec == &_bfd_elf_large_com_section)
{
/* Process a symbol. */
static void
-elf64_x86_64_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
- asymbol *asym)
+elf_x86_64_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
+ asymbol *asym)
{
elf_symbol_type *elfsym = (elf_symbol_type *) asym;
}
static bfd_boolean
-elf64_x86_64_common_definition (Elf_Internal_Sym *sym)
+elf_x86_64_common_definition (Elf_Internal_Sym *sym)
{
return (sym->st_shndx == SHN_COMMON
|| sym->st_shndx == SHN_X86_64_LCOMMON);
}
static unsigned int
-elf64_x86_64_common_section_index (asection *sec)
+elf_x86_64_common_section_index (asection *sec)
{
if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
return SHN_COMMON;
}
static asection *
-elf64_x86_64_common_section (asection *sec)
+elf_x86_64_common_section (asection *sec)
{
if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
return bfd_com_section_ptr;
}
static bfd_boolean
-elf64_x86_64_merge_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED,
- struct elf_link_hash_entry **sym_hash ATTRIBUTE_UNUSED,
- struct elf_link_hash_entry *h,
- Elf_Internal_Sym *sym,
- asection **psec,
- bfd_vma *pvalue ATTRIBUTE_UNUSED,
- unsigned int *pold_alignment ATTRIBUTE_UNUSED,
- bfd_boolean *skip ATTRIBUTE_UNUSED,
- bfd_boolean *override ATTRIBUTE_UNUSED,
- bfd_boolean *type_change_ok ATTRIBUTE_UNUSED,
- bfd_boolean *size_change_ok ATTRIBUTE_UNUSED,
- bfd_boolean *newdef ATTRIBUTE_UNUSED,
- bfd_boolean *newdyn,
- bfd_boolean *newdyncommon ATTRIBUTE_UNUSED,
- bfd_boolean *newweak ATTRIBUTE_UNUSED,
- bfd *abfd ATTRIBUTE_UNUSED,
- asection **sec,
- bfd_boolean *olddef ATTRIBUTE_UNUSED,
- bfd_boolean *olddyn,
- bfd_boolean *olddyncommon ATTRIBUTE_UNUSED,
- bfd_boolean *oldweak ATTRIBUTE_UNUSED,
- bfd *oldbfd,
- asection **oldsec)
+elf_x86_64_merge_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED,
+ struct elf_link_hash_entry **sym_hash ATTRIBUTE_UNUSED,
+ struct elf_link_hash_entry *h,
+ Elf_Internal_Sym *sym,
+ asection **psec,
+ bfd_vma *pvalue ATTRIBUTE_UNUSED,
+ unsigned int *pold_alignment ATTRIBUTE_UNUSED,
+ bfd_boolean *skip ATTRIBUTE_UNUSED,
+ bfd_boolean *override ATTRIBUTE_UNUSED,
+ bfd_boolean *type_change_ok ATTRIBUTE_UNUSED,
+ bfd_boolean *size_change_ok ATTRIBUTE_UNUSED,
+ bfd_boolean *newdyn ATTRIBUTE_UNUSED,
+ bfd_boolean *newdef,
+ bfd_boolean *newdyncommon ATTRIBUTE_UNUSED,
+ bfd_boolean *newweak ATTRIBUTE_UNUSED,
+ bfd *abfd ATTRIBUTE_UNUSED,
+ asection **sec,
+ bfd_boolean *olddyn ATTRIBUTE_UNUSED,
+ bfd_boolean *olddef,
+ bfd_boolean *olddyncommon ATTRIBUTE_UNUSED,
+ bfd_boolean *oldweak ATTRIBUTE_UNUSED,
+ bfd *oldbfd,
+ asection **oldsec)
{
/* A normal common symbol and a large common symbol result in a
normal common symbol. We turn the large common symbol into a
normal one. */
- if (!*olddyn
+ if (!*olddef
&& h->root.type == bfd_link_hash_common
- && !*newdyn
+ && !*newdef
&& bfd_is_com_section (*sec)
&& *oldsec != *sec)
{
}
static int
-elf64_x86_64_additional_program_headers (bfd *abfd,
- struct bfd_link_info *info ATTRIBUTE_UNUSED)
+elf_x86_64_additional_program_headers (bfd *abfd,
+ struct bfd_link_info *info ATTRIBUTE_UNUSED)
{
asection *s;
int count = 0;
/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
static bfd_boolean
-elf64_x86_64_hash_symbol (struct elf_link_hash_entry *h)
+elf_x86_64_hash_symbol (struct elf_link_hash_entry *h)
{
if (h->plt.offset != (bfd_vma) -1
&& !h->def_regular
return _bfd_elf_hash_symbol (h);
}
+/* Return TRUE iff relocations for INPUT are compatible with OUTPUT. */
+
+static bfd_boolean
+elf_x86_64_relocs_compatible (const bfd_target *input,
+ const bfd_target *output)
+{
+ return ((xvec_get_elf_backend_data (input)->s->elfclass
+ == xvec_get_elf_backend_data (output)->s->elfclass)
+ && _bfd_elf_relocs_compatible (input, output));
+}
+
static const struct bfd_elf_special_section
- elf64_x86_64_special_sections[]=
+ elf_x86_64_special_sections[]=
{
{ STRING_COMMA_LEN (".gnu.linkonce.lb"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
{ STRING_COMMA_LEN (".gnu.linkonce.lr"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
#define elf_backend_want_plt_sym 0
#define elf_backend_got_header_size (GOT_ENTRY_SIZE*3)
#define elf_backend_rela_normal 1
+#define elf_backend_plt_alignment 4
-#define elf_info_to_howto elf64_x86_64_info_to_howto
+#define elf_info_to_howto elf_x86_64_info_to_howto
#define bfd_elf64_bfd_link_hash_table_create \
- elf64_x86_64_link_hash_table_create
+ elf_x86_64_link_hash_table_create
#define bfd_elf64_bfd_link_hash_table_free \
- elf64_x86_64_link_hash_table_free
-#define bfd_elf64_bfd_reloc_type_lookup elf64_x86_64_reloc_type_lookup
+ elf_x86_64_link_hash_table_free
+#define bfd_elf64_bfd_reloc_type_lookup elf_x86_64_reloc_type_lookup
#define bfd_elf64_bfd_reloc_name_lookup \
- elf64_x86_64_reloc_name_lookup
-
-#define elf_backend_adjust_dynamic_symbol elf64_x86_64_adjust_dynamic_symbol
-#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
-#define elf_backend_check_relocs elf64_x86_64_check_relocs
-#define elf_backend_copy_indirect_symbol elf64_x86_64_copy_indirect_symbol
-#define elf_backend_create_dynamic_sections elf64_x86_64_create_dynamic_sections
-#define elf_backend_finish_dynamic_sections elf64_x86_64_finish_dynamic_sections
-#define elf_backend_finish_dynamic_symbol elf64_x86_64_finish_dynamic_symbol
-#define elf_backend_gc_mark_hook elf64_x86_64_gc_mark_hook
-#define elf_backend_gc_sweep_hook elf64_x86_64_gc_sweep_hook
-#define elf_backend_grok_prstatus elf64_x86_64_grok_prstatus
-#define elf_backend_grok_psinfo elf64_x86_64_grok_psinfo
-#define elf_backend_reloc_type_class elf64_x86_64_reloc_type_class
-#define elf_backend_relocate_section elf64_x86_64_relocate_section
-#define elf_backend_size_dynamic_sections elf64_x86_64_size_dynamic_sections
-#define elf_backend_always_size_sections elf64_x86_64_always_size_sections
+ elf_x86_64_reloc_name_lookup
+
+#define elf_backend_adjust_dynamic_symbol elf_x86_64_adjust_dynamic_symbol
+#define elf_backend_relocs_compatible elf_x86_64_relocs_compatible
+#define elf_backend_check_relocs elf_x86_64_check_relocs
+#define elf_backend_copy_indirect_symbol elf_x86_64_copy_indirect_symbol
+#define elf_backend_create_dynamic_sections elf_x86_64_create_dynamic_sections
+#define elf_backend_finish_dynamic_sections elf_x86_64_finish_dynamic_sections
+#define elf_backend_finish_dynamic_symbol elf_x86_64_finish_dynamic_symbol
+#define elf_backend_gc_mark_hook elf_x86_64_gc_mark_hook
+#define elf_backend_gc_sweep_hook elf_x86_64_gc_sweep_hook
+#define elf_backend_grok_prstatus elf_x86_64_grok_prstatus
+#define elf_backend_grok_psinfo elf_x86_64_grok_psinfo
+#ifdef CORE_HEADER
+#define elf_backend_write_core_note elf_x86_64_write_core_note
+#endif
+#define elf_backend_reloc_type_class elf_x86_64_reloc_type_class
+#define elf_backend_relocate_section elf_x86_64_relocate_section
+#define elf_backend_size_dynamic_sections elf_x86_64_size_dynamic_sections
+#define elf_backend_always_size_sections elf_x86_64_always_size_sections
#define elf_backend_init_index_section _bfd_elf_init_1_index_section
-#define elf_backend_plt_sym_val elf64_x86_64_plt_sym_val
+#define elf_backend_plt_sym_val elf_x86_64_plt_sym_val
#define elf_backend_object_p elf64_x86_64_elf_object_p
-#define bfd_elf64_mkobject elf64_x86_64_mkobject
+#define bfd_elf64_mkobject elf_x86_64_mkobject
#define elf_backend_section_from_shdr \
- elf64_x86_64_section_from_shdr
+ elf_x86_64_section_from_shdr
#define elf_backend_section_from_bfd_section \
- elf64_x86_64_elf_section_from_bfd_section
+ elf_x86_64_elf_section_from_bfd_section
#define elf_backend_add_symbol_hook \
- elf64_x86_64_add_symbol_hook
+ elf_x86_64_add_symbol_hook
#define elf_backend_symbol_processing \
- elf64_x86_64_symbol_processing
+ elf_x86_64_symbol_processing
#define elf_backend_common_section_index \
- elf64_x86_64_common_section_index
+ elf_x86_64_common_section_index
#define elf_backend_common_section \
- elf64_x86_64_common_section
+ elf_x86_64_common_section
#define elf_backend_common_definition \
- elf64_x86_64_common_definition
+ elf_x86_64_common_definition
#define elf_backend_merge_symbol \
- elf64_x86_64_merge_symbol
+ elf_x86_64_merge_symbol
#define elf_backend_special_sections \
- elf64_x86_64_special_sections
+ elf_x86_64_special_sections
#define elf_backend_additional_program_headers \
- elf64_x86_64_additional_program_headers
+ elf_x86_64_additional_program_headers
#define elf_backend_hash_symbol \
- elf64_x86_64_hash_symbol
+ elf_x86_64_hash_symbol
-#undef elf_backend_post_process_headers
#define elf_backend_post_process_headers _bfd_elf_set_osabi
#include "elf64-target.h"
#undef elf64_bed
#define elf64_bed elf64_x86_64_sol2_bed
+/* The 64-bit static TLS arena size is rounded to the nearest 16-byte
+ boundary. */
+#undef elf_backend_static_tls_alignment
+#define elf_backend_static_tls_alignment 16
+
/* The Solaris 2 ABI requires a plt symbol on all platforms.
Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
#include "elf64-target.h"
+/* Native Client support. */
+
+#undef TARGET_LITTLE_SYM
+#define TARGET_LITTLE_SYM bfd_elf64_x86_64_nacl_vec
+#undef TARGET_LITTLE_NAME
+#define TARGET_LITTLE_NAME "elf64-x86-64-nacl"
+#undef elf64_bed
+#define elf64_bed elf64_x86_64_nacl_bed
+
+#undef ELF_MAXPAGESIZE
+#undef ELF_MINPAGESIZE
+#undef ELF_COMMONPAGESIZE
+#define ELF_MAXPAGESIZE 0x10000
+#define ELF_MINPAGESIZE 0x10000
+#define ELF_COMMONPAGESIZE 0x10000
+
+/* Restore defaults. */
+#undef ELF_OSABI
+#undef elf_backend_static_tls_alignment
+#undef elf_backend_want_plt_sym
+#define elf_backend_want_plt_sym 0
+
+/* NaCl uses substantially different PLT entries for the same effects. */
+
+#undef elf_backend_plt_alignment
+#define elf_backend_plt_alignment 5
+#define NACL_PLT_ENTRY_SIZE 64
+#define NACLMASK 0xe0 /* 32-byte alignment mask. */
+
+static const bfd_byte elf_x86_64_nacl_plt0_entry[NACL_PLT_ENTRY_SIZE] =
+ {
+ 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
+ 0x4c, 0x8b, 0x1d, 16, 0, 0, 0, /* mov GOT+16(%rip), %r11 */
+ 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
+ 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
+ 0x41, 0xff, 0xe3, /* jmpq *%r11 */
+
+ /* 9-byte nop sequence to pad out to the next 32-byte boundary. */
+ 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopl %cs:0x0(%rax,%rax,1) */
+
+ /* 32 bytes of nop to pad out to the standard size. */
+ 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data32 prefixes */
+ 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
+ 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data32 prefixes */
+ 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
+ 0x66, /* excess data32 prefix */
+ 0x90 /* nop */
+ };
+
+static const bfd_byte elf_x86_64_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
+ {
+ 0x4c, 0x8b, 0x1d, 0, 0, 0, 0, /* mov name@GOTPCREL(%rip),%r11 */
+ 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
+ 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
+ 0x41, 0xff, 0xe3, /* jmpq *%r11 */
+
+ /* 15-byte nop sequence to pad out to the next 32-byte boundary. */
+ 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data32 prefixes */
+ 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
+
+ /* Lazy GOT entries point here (32-byte aligned). */
+ 0x68, /* pushq immediate */
+ 0, 0, 0, 0, /* replaced with index into relocation table. */
+ 0xe9, /* jmp relative */
+ 0, 0, 0, 0, /* replaced with offset to start of .plt0. */
+
+ /* 22 bytes of nop to pad out to the standard size. */
+ 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data32 prefixes */
+ 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
+ 0x0f, 0x1f, 0x80, 0, 0, 0, 0, /* nopl 0x0(%rax) */
+ };
+
+/* .eh_frame covering the .plt section. */
+
+static const bfd_byte elf_x86_64_nacl_eh_frame_plt[] =
+ {
+#if (PLT_CIE_LENGTH != 20 \
+ || PLT_FDE_LENGTH != 36 \
+ || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
+ || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
+# error "Need elf_x86_64_backend_data parameters for eh_frame_plt offsets!"
+#endif
+ PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
+ 0, 0, 0, 0, /* CIE ID */
+ 1, /* CIE version */
+ 'z', 'R', 0, /* Augmentation string */
+ 1, /* Code alignment factor */
+ 0x78, /* Data alignment factor */
+ 16, /* Return address column */
+ 1, /* Augmentation size */
+ DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
+ DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
+ DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
+ DW_CFA_nop, DW_CFA_nop,
+
+ PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
+ PLT_CIE_LENGTH + 8, 0, 0, 0,/* CIE pointer */
+ 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
+ 0, 0, 0, 0, /* .plt size goes here */
+ 0, /* Augmentation size */
+ DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
+ DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
+ DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
+ DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
+ DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
+ 13, /* Block length */
+ DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
+ DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
+ DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
+ DW_OP_lit3, DW_OP_shl, DW_OP_plus,
+ DW_CFA_nop, DW_CFA_nop
+ };
+
+static const struct elf_x86_64_backend_data elf_x86_64_nacl_arch_bed =
+ {
+ elf_x86_64_nacl_plt0_entry, /* plt0_entry */
+ elf_x86_64_nacl_plt_entry, /* plt_entry */
+ NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
+ 2, /* plt0_got1_offset */
+ 9, /* plt0_got2_offset */
+ 13, /* plt0_got2_insn_end */
+ 3, /* plt_got_offset */
+ 33, /* plt_reloc_offset */
+ 38, /* plt_plt_offset */
+ 7, /* plt_got_insn_size */
+ 42, /* plt_plt_insn_end */
+ 32, /* plt_lazy_offset */
+ elf_x86_64_nacl_eh_frame_plt, /* eh_frame_plt */
+ sizeof (elf_x86_64_nacl_eh_frame_plt), /* eh_frame_plt_size */
+ };
+
+#undef elf_backend_arch_data
+#define elf_backend_arch_data &elf_x86_64_nacl_arch_bed
+
+#undef elf_backend_modify_segment_map
+#define elf_backend_modify_segment_map nacl_modify_segment_map
+#undef elf_backend_modify_program_headers
+#define elf_backend_modify_program_headers nacl_modify_program_headers
+
+#include "elf64-target.h"
+
+/* Native Client x32 support. */
+
+#undef TARGET_LITTLE_SYM
+#define TARGET_LITTLE_SYM bfd_elf32_x86_64_nacl_vec
+#undef TARGET_LITTLE_NAME
+#define TARGET_LITTLE_NAME "elf32-x86-64-nacl"
+#undef elf32_bed
+#define elf32_bed elf32_x86_64_nacl_bed
+
+#define bfd_elf32_bfd_link_hash_table_create \
+ elf_x86_64_link_hash_table_create
+#define bfd_elf32_bfd_link_hash_table_free \
+ elf_x86_64_link_hash_table_free
+#define bfd_elf32_bfd_reloc_type_lookup \
+ elf_x86_64_reloc_type_lookup
+#define bfd_elf32_bfd_reloc_name_lookup \
+ elf_x86_64_reloc_name_lookup
+#define bfd_elf32_mkobject \
+ elf_x86_64_mkobject
+
+#undef elf_backend_object_p
+#define elf_backend_object_p \
+ elf32_x86_64_elf_object_p
+
+#undef elf_backend_bfd_from_remote_memory
+#define elf_backend_bfd_from_remote_memory \
+ _bfd_elf32_bfd_from_remote_memory
+
+#undef elf_backend_size_info
+#define elf_backend_size_info \
+ _bfd_elf32_size_info
+
+#include "elf32-target.h"
+
+/* Restore defaults. */
+#undef elf_backend_object_p
+#define elf_backend_object_p elf64_x86_64_elf_object_p
+#undef elf_backend_bfd_from_remote_memory
+#undef elf_backend_size_info
+#undef elf_backend_modify_segment_map
+#undef elf_backend_modify_program_headers
+
/* Intel L1OM support. */
static bfd_boolean
#undef elf_backend_object_p
#define elf_backend_object_p elf64_l1om_elf_object_p
-#undef elf_backend_post_process_headers
+/* Restore defaults. */
+#undef ELF_MAXPAGESIZE
+#undef ELF_MINPAGESIZE
+#undef ELF_COMMONPAGESIZE
+#define ELF_MAXPAGESIZE 0x200000
+#define ELF_MINPAGESIZE 0x1000
+#define ELF_COMMONPAGESIZE 0x1000
+#undef elf_backend_plt_alignment
+#define elf_backend_plt_alignment 4
+#undef elf_backend_arch_data
+#define elf_backend_arch_data &elf_x86_64_arch_bed
#include "elf64-target.h"
#undef elf64_bed
#define elf64_bed elf64_l1om_fbsd_bed
-#undef elf_backend_post_process_headers
-#define elf_backend_post_process_headers _bfd_elf_set_osabi
+#include "elf64-target.h"
+
+/* Intel K1OM support. */
+
+static bfd_boolean
+elf64_k1om_elf_object_p (bfd *abfd)
+{
+ /* Set the right machine number for an K1OM elf64 file. */
+ bfd_default_set_arch_mach (abfd, bfd_arch_k1om, bfd_mach_k1om);
+ return TRUE;
+}
+
+#undef TARGET_LITTLE_SYM
+#define TARGET_LITTLE_SYM bfd_elf64_k1om_vec
+#undef TARGET_LITTLE_NAME
+#define TARGET_LITTLE_NAME "elf64-k1om"
+#undef ELF_ARCH
+#define ELF_ARCH bfd_arch_k1om
+
+#undef ELF_MACHINE_CODE
+#define ELF_MACHINE_CODE EM_K1OM
+
+#undef ELF_OSABI
+
+#undef elf64_bed
+#define elf64_bed elf64_k1om_bed
+
+#undef elf_backend_object_p
+#define elf_backend_object_p elf64_k1om_elf_object_p
+
+#undef elf_backend_static_tls_alignment
+
+#undef elf_backend_want_plt_sym
+#define elf_backend_want_plt_sym 0
#include "elf64-target.h"
+
+/* FreeBSD K1OM support. */
+
+#undef TARGET_LITTLE_SYM
+#define TARGET_LITTLE_SYM bfd_elf64_k1om_freebsd_vec
+#undef TARGET_LITTLE_NAME
+#define TARGET_LITTLE_NAME "elf64-k1om-freebsd"
+
+#undef ELF_OSABI
+#define ELF_OSABI ELFOSABI_FREEBSD
+
+#undef elf64_bed
+#define elf64_bed elf64_k1om_fbsd_bed
+
+#include "elf64-target.h"
+
+/* 32bit x86-64 support. */
+
+#undef TARGET_LITTLE_SYM
+#define TARGET_LITTLE_SYM bfd_elf32_x86_64_vec
+#undef TARGET_LITTLE_NAME
+#define TARGET_LITTLE_NAME "elf32-x86-64"
+#undef elf32_bed
+
+#undef ELF_ARCH
+#define ELF_ARCH bfd_arch_i386
+
+#undef ELF_MACHINE_CODE
+#define ELF_MACHINE_CODE EM_X86_64
+
+#undef ELF_OSABI
+
+#undef elf_backend_object_p
+#define elf_backend_object_p \
+ elf32_x86_64_elf_object_p
+
+#undef elf_backend_bfd_from_remote_memory
+#define elf_backend_bfd_from_remote_memory \
+ _bfd_elf32_bfd_from_remote_memory
+
+#undef elf_backend_size_info
+#define elf_backend_size_info \
+ _bfd_elf32_size_info
+
+#include "elf32-target.h"
projects / deliverable / binutils-gdb.git / blobdiff