/* X86-64 specific support for ELF
Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
- 2010 Free Software Foundation, Inc.
+ 2010, 2011
+ Free Software Foundation, Inc.
Contributed by Jan Hubicka <jh@suse.cz>.
This file is part of BFD, the Binary File Descriptor library.
#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)
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) \
{
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)
{
}
static reloc_howto_type *
-elf_x86_64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+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];
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
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);
+ const void *p;
+ int size;
+ 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));
+ p = (const void *) &data;
+ size = 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));
+ p = (const void *) &data;
+ size = sizeof (data);
+ }
+ break;
+
+ 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));
+ p = (const void *) &prstat;
+ size = 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));
+ p = (const void *) &prstat;
+ size = 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));
+ p = (const void *) &prstat;
+ size = sizeof (prstat);
+ }
+ break;
+ }
+
+ return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, p,
+ size);
+}
+#endif
\f
/* Functions for the x86-64 ELF linker. */
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
+};
+
/* x86-64 ELF linker hash entry. */
struct elf_x86_64_link_hash_entry
/* Short-cuts to get to dynamic linker sections. */
asection *sdynbss;
asection *srelbss;
+ asection *plt_eh_frame;
union
{
bfd_vma (*r_info) (bfd_vma, bfd_vma);
bfd_vma (*r_sym) (bfd_vma);
- void (*swap_reloca_out) (bfd *, const Elf_Internal_Rela *, bfd_byte *);
+ unsigned int pointer_r_type;
const char *dynamic_interpreter;
int dynamic_interpreter_size;
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->r_info = elf64_r_info;
ret->r_sym = elf64_r_sym;
- ret->swap_reloca_out = bfd_elf64_swap_reloca_out;
+ ret->pointer_r_type = R_X86_64_64;
ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER;
}
{
ret->r_info = elf32_r_info;
ret->r_sym = elf32_r_sym;
- ret->swap_reloca_out = bfd_elf32_swap_reloca_out;
+ ret->pointer_r_type = R_X86_64_32;
ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER;
}
|| (!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)
+ {
+ 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 = sizeof (elf_x86_64_eh_frame_plt);
+ htab->plt_eh_frame->contents
+ = bfd_alloc (dynobj, htab->plt_eh_frame->size);
+ memcpy (htab->plt_eh_frame->contents, elf_x86_64_eh_frame_plt,
+ sizeof (elf_x86_64_eh_frame_plt));
+ }
return TRUE;
}
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
+ static x86_64_opcode32 call = { { 0x66, 0x66, 0x48, 0xe8 } };
+ if ((offset + 12) > sec->size
|| bfd_get_32 (abfd, contents + offset + 4) != call.i)
return FALSE;
+
+ if (ABI_64_P (abfd))
+ {
+ static x86_64_opcode32 leaq = { { 0x66, 0x48, 0x8d, 0x3d } };
+ if (offset < 4
+ || bfd_get_32 (abfd, contents + offset - 4) != leaq.i)
+ return FALSE;
+ }
+ else
+ {
+ static x86_64_opcode16 lea = { { 0x8d, 0x3d } };
+ if (offset < 3
+ || bfd_get_8 (abfd, contents + offset - 3) != 0x48
+ || bfd_get_16 (abfd, contents + offset - 2) != lea.i)
+ return FALSE;
+ }
}
else
{
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)
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;
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)
}
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
sections we don't care about, such as debug sections or
non-constant sections. */
if (info->shared
- && ABI_64_P (abfd)
&& (sec->flags & SEC_ALLOC) != 0
&& (sec->flags & SEC_READONLY) != 0)
{
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;
/* 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 = elf_x86_64_get_local_sym_hash (htab, abfd, rel, FALSE);
if (h == NULL)
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 elf_x86_64_link_hash_entry *) h;
info = (struct bfd_link_info *) inf;
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 elf_x86_64_link_hash_entry *) h;
for (p = eh->dyn_relocs; p != NULL; p = p->next)
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;
}
{
srel = elf_section_data (p->sec)->sreloc;
srel->size += p->count * bed->s->sizeof_rela;
- if ((p->sec->output_section->flags & SEC_READONLY) != 0)
- info->flags |= DF_TEXTREL;
+ 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);
+ }
}
}
}
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
return FALSE;
}
- howto = x86_64_elf_howto_table + r_type;
+ 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;
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_32:
+ if (ABI_64_P (output_bfd))
+ goto do_relocation;
+ /* FALLTHROUGH */
case R_X86_64_64:
if (rel->r_addend != 0)
{
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:
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;
}
}
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 = htab->r_info (0,
+ R_X86_64_RELATIVE64);
+ outrel.r_addend = relocation + rel->r_addend;
+ }
else
{
long sindx;
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;
+ }
elf_append_rela (output_bfd, sreloc, &outrel);
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,
elf_x86_64_tpoff (info, relocation),
contents + roff + 8);
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),
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
{
/* 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;
break;
case R_X86_64_TPOFF32:
+ case R_X86_64_TPOFF64:
BFD_ASSERT (info->executable);
relocation = elf_x86_64_tpoff (info, relocation);
break;
contents, rel->r_offset,
relocation, rel->r_addend);
+check_relocation_error:
if (r != bfd_reloc_ok)
{
const char *name;
|| 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
bed = get_elf_backend_data (output_bfd);
loc = relplt->contents + plt_index * bed->s->sizeof_rela;
- htab->swap_reloca_out (output_bfd, &rela, loc);
+ bed->s->swap_reloca_out (output_bfd, &rela, loc);
if (!h->def_regular)
{
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. */
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
+ == ELF_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;
}
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;
}
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 *newdyn ATTRIBUTE_UNUSED,
+ bfd_boolean *newdef,
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 *olddyn ATTRIBUTE_UNUSED,
+ bfd_boolean *olddef,
bfd_boolean *olddyncommon ATTRIBUTE_UNUSED,
bfd_boolean *oldweak ATTRIBUTE_UNUSED,
bfd *oldbfd,
/* 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)
{
#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 elf_x86_64_info_to_howto
#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_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 elf_backend_object_p
#define elf_backend_object_p elf64_l1om_elf_object_p
-#undef elf_backend_post_process_headers
#undef elf_backend_static_tls_alignment
+#undef elf_backend_want_plt_sym
+#define elf_backend_want_plt_sym 0
+
#include "elf64-target.h"
/* FreeBSD L1OM support. */
#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"
#undef ELF_OSABI
-#undef elf_backend_post_process_headers
-
#undef elf_backend_object_p
#define elf_backend_object_p \
elf32_x86_64_elf_object_p
projects / deliverable / binutils-gdb.git / blobdiff