Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
-#include "sysdep.h"
-#include "bfd.h"
-#include "bfdlink.h"
-#include "libbfd.h"
-#include "elf-bfd.h"
+#include "elfxx-x86.h"
#include "elf-nacl.h"
#include "elf-vxworks.h"
-#include "bfd_stdint.h"
-#include "objalloc.h"
-#include "hashtab.h"
#include "dwarf2.h"
#include "opcode/i386.h"
early in the link process, elf_i386_finish_dynamic_sections is
one of the last functions. */
+/* The size in bytes of an entry in the lazy procedure linkage table. */
-/* The name of the dynamic interpreter. This is put in the .interp
- section. */
+#define LAZY_PLT_ENTRY_SIZE 16
-#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
+/* The size in bytes of an entry in the non-lazy procedure linkage
+ table. */
-/* 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
- section, and instead use a dynamic relocation to point into the
- shared lib. */
-#define ELIMINATE_COPY_RELOCS 1
+#define NON_LAZY_PLT_ENTRY_SIZE 8
-/* The size in bytes of an entry in the procedure linkage table. */
+/* The first entry in an absolute lazy procedure linkage table looks
+ like this. See the SVR4 ABI i386 supplement to see how this works.
+ Will be padded to LAZY_PLT_ENTRY_SIZE with lazy_plt->plt0_pad_byte. */
-#define PLT_ENTRY_SIZE 16
-
-/* The first entry in an absolute procedure linkage table looks like
- this. See the SVR4 ABI i386 supplement to see how this works.
- Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
-
-static const bfd_byte elf_i386_plt0_entry[12] =
+static const bfd_byte elf_i386_lazy_plt0_entry[12] =
{
0xff, 0x35, /* pushl contents of address */
0, 0, 0, 0, /* replaced with address of .got + 4. */
0, 0, 0, 0 /* replaced with address of .got + 8. */
};
-/* Subsequent entries in an absolute procedure linkage table look like
- this. */
+/* Subsequent entries in an absolute lazy procedure linkage table look
+ like this. */
-static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] =
+static const bfd_byte elf_i386_lazy_plt_entry[LAZY_PLT_ENTRY_SIZE] =
{
0xff, 0x25, /* jmp indirect */
0, 0, 0, 0, /* replaced with address of this symbol in .got. */
0, 0, 0, 0 /* replaced with offset to start of .plt. */
};
-/* The first entry in a PIC procedure linkage table look like this.
- Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
+/* The first entry in a PIC lazy procedure linkage table look like
+ this. Will be padded to LAZY_PLT_ENTRY_SIZE with
+ lazy_plt->plt0_pad_byte. */
-static const bfd_byte elf_i386_pic_plt0_entry[12] =
+static const bfd_byte elf_i386_pic_lazy_plt0_entry[12] =
{
0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */
};
-/* Subsequent entries in a PIC procedure linkage table look like this. */
+/* Subsequent entries in a PIC lazy procedure linkage table look like
+ this. */
-static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] =
+static const bfd_byte elf_i386_pic_lazy_plt_entry[LAZY_PLT_ENTRY_SIZE] =
{
0xff, 0xa3, /* jmp *offset(%ebx) */
0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
0, 0, 0, 0 /* replaced with offset to start of .plt. */
};
-/* Entries in the GOT procedure linkage table look like this. */
+/* Entries in the non-lazy procedure linkage table look like this. */
-static const bfd_byte elf_i386_got_plt_entry[8] =
+static const bfd_byte elf_i386_non_lazy_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] =
{
0xff, 0x25, /* jmp indirect */
0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
0x66, 0x90 /* xchg %ax,%ax */
};
-/* Entries in the PIC GOT procedure linkage table look like this. */
+/* Entries in the PIC non-lazy procedure linkage table look like
+ this. */
-static const bfd_byte elf_i386_pic_got_plt_entry[8] =
+static const bfd_byte elf_i386_pic_non_lazy_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] =
{
0xff, 0xa3, /* jmp *offset(%ebx) */
0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
0x66, 0x90 /* xchg %ax,%ax */
};
-/* .eh_frame covering the .plt section. */
+/* The first entry in an absolute IBT-enabled lazy procedure linkage
+ table looks like this. */
+
+static const bfd_byte elf_i386_lazy_ibt_plt0_entry[LAZY_PLT_ENTRY_SIZE] =
+{
+ 0xff, 0x35, 0, 0, 0, 0, /* pushl GOT[1] */
+ 0xff, 0x25, 0, 0, 0, 0, /* jmp *GOT[2] */
+ 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */
+};
+
+/* Subsequent entries for an absolute IBT-enabled lazy procedure linkage
+ table look like this. Subsequent entries for a PIC IBT-enabled lazy
+ procedure linkage table are the same. */
+
+static const bfd_byte elf_i386_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
+{
+ 0xf3, 0x0f, 0x1e, 0xfb, /* endbr32 */
+ 0x68, 0, 0, 0, 0, /* pushl immediate */
+ 0xe9, 0, 0, 0, 0, /* jmp relative */
+ 0x66, 0x90 /* xchg %ax,%ax */
+};
+
+/* The first entry in a PIC IBT-enabled lazy procedure linkage table
+ look like. */
+
+static const bfd_byte elf_i386_pic_lazy_ibt_plt0_entry[LAZY_PLT_ENTRY_SIZE] =
+{
+ 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
+ 0xff, 0xa3, 8, 0, 0, 0, /* jmp *8(%ebx) */
+ 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */
+};
+
+/* Entries for branches with IBT-enabled in the absolute non-lazey
+ procedure linkage table look like this. They have the same size
+ as the lazy PLT entry. */
-static const bfd_byte elf_i386_eh_frame_plt[] =
+static const bfd_byte elf_i386_non_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
+{
+ 0xf3, 0x0f, 0x1e, 0xfb, /* endbr32 */
+ 0xff, 0x25, 0, 0, 0, 0, /* jmp *name@GOT */
+ 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopw 0x0(%rax,%rax,1) */
+};
+
+/* Entries for branches with IBT-enabled in the PIC non-lazey procedure
+ linkage table look like this. They have the same size as the lazy
+ PLT entry. */
+
+static const bfd_byte elf_i386_pic_non_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
+{
+ 0xf3, 0x0f, 0x1e, 0xfb, /* endbr32 */
+ 0xff, 0xa3, 0, 0, 0, 0, /* jmp *name@GOT(%ebx) */
+ 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopw 0x0(%rax,%rax,1) */
+};
+
+/* .eh_frame covering the lazy .plt section. */
+
+static const bfd_byte elf_i386_eh_frame_lazy_plt[] =
{
#define PLT_CIE_LENGTH 20
#define PLT_FDE_LENGTH 36
DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
};
-/* .eh_frame covering the .plt.got section. */
+/* .eh_frame covering the lazy .plt section with IBT-enabled. */
-static const bfd_byte elf_i386_eh_frame_plt_got[] =
+static const bfd_byte elf_i386_eh_frame_lazy_ibt_plt[] =
{
-#define PLT_GOT_FDE_LENGTH 16
PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
0, 0, 0, 0, /* CIE ID */
1, /* CIE version */
DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
DW_CFA_nop, DW_CFA_nop,
- PLT_GOT_FDE_LENGTH, 0, 0, 0, /* FDE length */
+ PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
- 0, 0, 0, 0, /* the start of .plt.got goes here */
- 0, 0, 0, 0, /* .plt.got size goes here */
+ 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
+ 0, 0, 0, 0, /* .plt size goes here */
0, /* Augmentation size */
- DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
+ DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
+ DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
+ DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
+ 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_breg4, 4, /* DW_OP_breg4 (esp): 4 */
+ DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
+ DW_OP_lit15, DW_OP_and, DW_OP_lit9, DW_OP_ge,
+ DW_OP_lit2, DW_OP_shl, DW_OP_plus,
+ DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
};
-struct elf_i386_plt_layout
-{
- /* The first entry in an absolute procedure linkage table looks like this. */
- const bfd_byte *plt0_entry;
- unsigned int plt0_entry_size;
-
- /* 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;
-
- /* Later entries in an absolute procedure linkage table look like this. */
- const bfd_byte *plt_entry;
- unsigned int plt_entry_size;
+/* .eh_frame covering the non-lazy .plt section. */
- /* 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. */
-
- /* Offset into plt_entry where the initial value of the GOT entry points. */
- unsigned int plt_lazy_offset;
-
- /* The first entry in a PIC procedure linkage table looks like this. */
- const bfd_byte *pic_plt0_entry;
-
- /* Subsequent entries in a PIC procedure linkage table look like this. */
- const bfd_byte *pic_plt_entry;
-
- /* .eh_frame covering the .plt section. */
- const bfd_byte *eh_frame_plt;
- unsigned int eh_frame_plt_size;
+static const bfd_byte elf_i386_eh_frame_non_lazy_plt[] =
+{
+#define PLT_GOT_FDE_LENGTH 16
+ 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 */
+ 0x7c, /* Data alignment factor */
+ 8, /* Return address column */
+ 1, /* Augmentation size */
+ DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
+ DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
+ DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
+ DW_CFA_nop, DW_CFA_nop,
- /* .eh_frame covering the .plt.got section. */
- const bfd_byte *eh_frame_plt_got;
- unsigned int eh_frame_plt_got_size;
+ PLT_GOT_FDE_LENGTH, 0, 0, 0, /* FDE length */
+ PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
+ 0, 0, 0, 0, /* the start of non-lazy .plt goes here */
+ 0, 0, 0, 0, /* non-lazy .plt size goes here */
+ 0, /* Augmentation size */
+ DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
};
-#define GET_PLT_ENTRY_SIZE(abfd) \
- get_elf_i386_backend_data (abfd)->plt->plt_entry_size
-
/* These are the standard parameters. */
-static const struct elf_i386_plt_layout elf_i386_plt =
+static const struct elf_x86_lazy_plt_layout elf_i386_lazy_plt =
{
- elf_i386_plt0_entry, /* plt0_entry */
- sizeof (elf_i386_plt0_entry), /* plt0_entry_size */
+ elf_i386_lazy_plt0_entry, /* plt0_entry */
+ sizeof (elf_i386_lazy_plt0_entry), /* plt0_entry_size */
+ elf_i386_lazy_plt_entry, /* plt_entry */
+ LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
2, /* plt0_got1_offset */
8, /* plt0_got2_offset */
- elf_i386_plt_entry, /* plt_entry */
- PLT_ENTRY_SIZE, /* plt_entry_size */
+ 0, /* plt0_got2_insn_end */
2, /* plt_got_offset */
7, /* plt_reloc_offset */
12, /* plt_plt_offset */
+ 0, /* plt_got_insn_size */
+ 0, /* plt_plt_insn_end */
6, /* plt_lazy_offset */
- elf_i386_pic_plt0_entry, /* pic_plt0_entry */
- elf_i386_pic_plt_entry, /* pic_plt_entry */
- elf_i386_eh_frame_plt, /* eh_frame_plt */
- sizeof (elf_i386_eh_frame_plt), /* eh_frame_plt_size */
- elf_i386_eh_frame_plt_got, /* eh_frame_plt_got */
- sizeof (elf_i386_eh_frame_plt_got), /* eh_frame_plt_got_size */
+ elf_i386_pic_lazy_plt0_entry, /* pic_plt0_entry */
+ elf_i386_pic_lazy_plt_entry, /* pic_plt_entry */
+ elf_i386_eh_frame_lazy_plt, /* eh_frame_plt */
+ sizeof (elf_i386_eh_frame_lazy_plt) /* eh_frame_plt_size */
+ };
+
+static const struct elf_x86_non_lazy_plt_layout elf_i386_non_lazy_plt =
+ {
+ elf_i386_non_lazy_plt_entry, /* plt_entry */
+ elf_i386_pic_non_lazy_plt_entry, /* pic_plt_entry */
+ NON_LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
+ 2, /* plt_got_offset */
+ 0, /* plt_got_insn_size */
+ elf_i386_eh_frame_non_lazy_plt, /* eh_frame_plt */
+ sizeof (elf_i386_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
+ };
+
+static const struct elf_x86_lazy_plt_layout elf_i386_lazy_ibt_plt =
+ {
+ elf_i386_lazy_ibt_plt0_entry, /* plt0_entry */
+ sizeof (elf_i386_lazy_ibt_plt0_entry), /* plt0_entry_size */
+ elf_i386_lazy_ibt_plt_entry, /* plt_entry */
+ LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
+ 2, /* plt0_got1_offset */
+ 8, /* plt0_got2_offset */
+ 0, /* plt0_got2_insn_end */
+ 4+2, /* plt_got_offset */
+ 4+1, /* plt_reloc_offset */
+ 4+6, /* plt_plt_offset */
+ 0, /* plt_got_insn_size */
+ 0, /* plt_plt_insn_end */
+ 0, /* plt_lazy_offset */
+ elf_i386_pic_lazy_ibt_plt0_entry, /* pic_plt0_entry */
+ elf_i386_lazy_ibt_plt_entry, /* pic_plt_entry */
+ elf_i386_eh_frame_lazy_ibt_plt, /* eh_frame_plt */
+ sizeof (elf_i386_eh_frame_lazy_ibt_plt) /* eh_frame_plt_size */
+ };
+
+static const struct elf_x86_non_lazy_plt_layout elf_i386_non_lazy_ibt_plt =
+ {
+ elf_i386_non_lazy_ibt_plt_entry, /* plt_entry */
+ elf_i386_pic_non_lazy_ibt_plt_entry,/* pic_plt_entry */
+ LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
+ 4+2, /* plt_got_offset */
+ 0, /* plt_got_insn_size */
+ elf_i386_eh_frame_non_lazy_plt, /* eh_frame_plt */
+ sizeof (elf_i386_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
};
\f
struct elf_i386_backend_data
{
- /* Parameters describing PLT generation. */
- const struct elf_i386_plt_layout *plt;
-
/* Value used to fill the unused bytes of the first PLT entry. */
bfd_byte plt0_pad_byte;
- /* True if the target system is VxWorks. */
- int is_vxworks;
+ /* Target system. */
+ enum
+ {
+ is_normal,
+ is_vxworks,
+ is_nacl
+ } os;
};
#define get_elf_i386_backend_data(abfd) \
/* These are the standard parameters. */
static const struct elf_i386_backend_data elf_i386_arch_bed =
{
- &elf_i386_plt, /* plt */
0, /* plt0_pad_byte */
- 0, /* is_vxworks */
+ is_normal /* os */
};
#define elf_backend_arch_data &elf_i386_arch_bed
-/* Is a undefined weak symbol which is resolved to 0. Reference to an
- undefined weak symbol is resolved to 0 when building executable if
- it isn't dynamic and
- 1. Has non-GOT/non-PLT relocations in text section. Or
- 2. Has no GOT/PLT relocation.
- */
-#define UNDEFINED_WEAK_RESOLVED_TO_ZERO(INFO, GOT_RELOC, EH) \
- ((EH)->elf.root.type == bfd_link_hash_undefweak \
- && bfd_link_executable (INFO) \
- && (elf_i386_hash_table (INFO)->interp == NULL \
- || !(GOT_RELOC) \
- || (EH)->has_non_got_reloc \
- || !(INFO)->dynamic_undefined_weak))
-
-/* i386 ELF linker hash entry. */
-
-struct elf_i386_link_hash_entry
-{
- struct elf_link_hash_entry elf;
-
- /* Track dynamic relocs copied for this symbol. */
- struct elf_dyn_relocs *dyn_relocs;
-
-#define GOT_UNKNOWN 0
-#define GOT_NORMAL 1
-#define GOT_TLS_GD 2
+/* Values in tls_type of x86 ELF linker hash entry. */
#define GOT_TLS_IE 4
#define GOT_TLS_IE_POS 5
#define GOT_TLS_IE_NEG 6
((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
#define GOT_TLS_GD_ANY_P(type) \
(GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
- unsigned char tls_type;
-
- /* Symbol is referenced by R_386_GOTOFF relocation. */
- unsigned int gotoff_ref : 1;
-
- /* Symbol has GOT or PLT relocations. */
- unsigned int has_got_reloc : 1;
-
- /* Symbol has non-GOT/non-PLT relocations in text sections. */
- unsigned int has_non_got_reloc : 1;
-
- /* Don't call finish_dynamic_symbol on this symbol. */
- unsigned int no_finish_dynamic_symbol : 1;
-
- /* 0: symbol isn't ___tls_get_addr.
- 1: symbol is ___tls_get_addr.
- 2: symbol is unknown. */
- unsigned int tls_get_addr : 2;
-
- /* Reference count of C/C++ function pointer relocations in read-write
- section which can be resolved at run-time. */
- bfd_signed_vma func_pointer_refcount;
-
- /* Information about the GOT PLT entry. Filled when there are both
- GOT and PLT relocations against the same function. */
- union gotplt_union plt_got;
-
- /* Offset of the GOTPLT entry reserved for the TLS descriptor,
- starting at the end of the jump table. */
- bfd_vma tlsdesc_got;
-};
-
-#define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
-
-struct elf_i386_obj_tdata
-{
- struct elf_obj_tdata root;
-
- /* tls_type for each local got entry. */
- char *local_got_tls_type;
-
- /* GOTPLT entries for TLS descriptors. */
- bfd_vma *local_tlsdesc_gotent;
-};
-
-#define elf_i386_tdata(abfd) \
- ((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
-
-#define elf_i386_local_got_tls_type(abfd) \
- (elf_i386_tdata (abfd)->local_got_tls_type)
-
-#define elf_i386_local_tlsdesc_gotent(abfd) \
- (elf_i386_tdata (abfd)->local_tlsdesc_gotent)
#define is_i386_elf(bfd) \
(bfd_get_flavour (bfd) == bfd_target_elf_flavour \
static bfd_boolean
elf_i386_mkobject (bfd *abfd)
{
- return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata),
+ return bfd_elf_allocate_object (abfd,
+ sizeof (struct elf_x86_obj_tdata),
I386_ELF_DATA);
}
-/* i386 ELF linker hash table. */
-
-struct elf_i386_link_hash_table
-{
- struct elf_link_hash_table elf;
-
- /* Short-cuts to get to dynamic linker sections. */
- asection *interp;
- asection *plt_eh_frame;
- asection *plt_got;
- asection *plt_got_eh_frame;
-
- union
- {
- bfd_signed_vma refcount;
- bfd_vma offset;
- } tls_ldm_got;
-
- /* The amount of space used by the reserved portion of the sgotplt
- section, plus whatever space is used by the jump slots. */
- bfd_vma sgotplt_jump_table_size;
-
- /* Small local sym cache. */
- struct sym_cache sym_cache;
-
- /* _TLS_MODULE_BASE_ symbol. */
- struct bfd_link_hash_entry *tls_module_base;
-
- /* Used by local STT_GNU_IFUNC symbols. */
- htab_t loc_hash_table;
- void * loc_hash_memory;
-
- /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */
- asection *srelplt2;
-
- /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */
- bfd_vma next_tls_desc_index;
-
- /* The index of the next unused R_386_JUMP_SLOT slot in .rel.plt. */
- bfd_vma next_jump_slot_index;
-
- /* The index of the next unused R_386_IRELATIVE slot in .rel.plt. */
- bfd_vma next_irelative_index;
-
- /* TRUE if there are dynamic relocs against IFUNC symbols that apply
- to read-only sections. */
- bfd_boolean readonly_dynrelocs_against_ifunc;
-};
-
-/* Get the i386 ELF linker hash table from a link_info structure. */
-
-#define elf_i386_hash_table(p) \
- (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
- == I386_ELF_DATA ? ((struct elf_i386_link_hash_table *) ((p)->hash)) : NULL)
-
#define elf_i386_compute_jump_table_size(htab) \
((htab)->elf.srelplt->reloc_count * 4)
-/* Create an entry in an i386 ELF linker hash table. */
-
-static struct bfd_hash_entry *
-elf_i386_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 elf_i386_link_hash_entry));
- if (entry == NULL)
- return entry;
- }
-
- /* Call the allocation method of the superclass. */
- entry = _bfd_elf_link_hash_newfunc (entry, table, string);
- if (entry != NULL)
- {
- struct elf_i386_link_hash_entry *eh;
-
- eh = (struct elf_i386_link_hash_entry *) entry;
- eh->dyn_relocs = NULL;
- eh->tls_type = GOT_UNKNOWN;
- eh->gotoff_ref = 0;
- eh->has_got_reloc = 0;
- eh->has_non_got_reloc = 0;
- eh->no_finish_dynamic_symbol = 0;
- eh->tls_get_addr = 2;
- eh->func_pointer_refcount = 0;
- eh->plt_got.offset = (bfd_vma) -1;
- eh->tlsdesc_got = (bfd_vma) -1;
- }
-
- return entry;
-}
-
-/* Compute a hash of a local hash entry. We use elf_link_hash_entry
- for local symbol so that we can handle local STT_GNU_IFUNC symbols
- as global symbol. We reuse indx and dynstr_index for local symbol
- hash since they aren't used by global symbols in this backend. */
-
-static hashval_t
-elf_i386_local_htab_hash (const void *ptr)
-{
- struct elf_link_hash_entry *h
- = (struct elf_link_hash_entry *) ptr;
- return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
-}
-
-/* Compare local hash entries. */
-
-static int
-elf_i386_local_htab_eq (const void *ptr1, const void *ptr2)
-{
- struct elf_link_hash_entry *h1
- = (struct elf_link_hash_entry *) ptr1;
- struct elf_link_hash_entry *h2
- = (struct elf_link_hash_entry *) ptr2;
-
- return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
-}
-
-/* Find and/or create a hash entry for local symbol. */
-
-static struct elf_link_hash_entry *
-elf_i386_get_local_sym_hash (struct elf_i386_link_hash_table *htab,
- bfd *abfd, const Elf_Internal_Rela *rel,
- bfd_boolean create)
-{
- struct elf_i386_link_hash_entry e, *ret;
- asection *sec = abfd->sections;
- hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
- ELF32_R_SYM (rel->r_info));
- void **slot;
-
- e.elf.indx = sec->id;
- e.elf.dynstr_index = ELF32_R_SYM (rel->r_info);
- slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
- create ? INSERT : NO_INSERT);
-
- if (!slot)
- return NULL;
-
- if (*slot)
- {
- ret = (struct elf_i386_link_hash_entry *) *slot;
- return &ret->elf;
- }
-
- ret = (struct elf_i386_link_hash_entry *)
- objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
- sizeof (struct elf_i386_link_hash_entry));
- if (ret)
- {
- memset (ret, 0, sizeof (*ret));
- ret->elf.indx = sec->id;
- ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info);
- ret->elf.dynindx = -1;
- ret->func_pointer_refcount = 0;
- ret->plt_got.offset = (bfd_vma) -1;
- *slot = ret;
- }
- return &ret->elf;
-}
-
-/* Destroy an i386 ELF linker hash table. */
-
-static void
-elf_i386_link_hash_table_free (bfd *obfd)
-{
- struct elf_i386_link_hash_table *htab
- = (struct elf_i386_link_hash_table *) obfd->link.hash;
-
- if (htab->loc_hash_table)
- htab_delete (htab->loc_hash_table);
- if (htab->loc_hash_memory)
- objalloc_free ((struct objalloc *) htab->loc_hash_memory);
- _bfd_elf_link_hash_table_free (obfd);
-}
-
-/* Create an i386 ELF linker hash table. */
-
-static struct bfd_link_hash_table *
-elf_i386_link_hash_table_create (bfd *abfd)
-{
- struct elf_i386_link_hash_table *ret;
- bfd_size_type amt = sizeof (struct elf_i386_link_hash_table);
-
- ret = (struct elf_i386_link_hash_table *) bfd_zmalloc (amt);
- if (ret == NULL)
- return NULL;
-
- if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
- elf_i386_link_hash_newfunc,
- sizeof (struct elf_i386_link_hash_entry),
- I386_ELF_DATA))
- {
- free (ret);
- return NULL;
- }
-
- ret->loc_hash_table = htab_try_create (1024,
- elf_i386_local_htab_hash,
- elf_i386_local_htab_eq,
- NULL);
- ret->loc_hash_memory = objalloc_create ();
- if (!ret->loc_hash_table || !ret->loc_hash_memory)
- {
- elf_i386_link_hash_table_free (abfd);
- return NULL;
- }
- ret->elf.root.hash_table_free = elf_i386_link_hash_table_free;
-
- return &ret->elf.root;
-}
-
-/* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
- .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
- hash table. */
-
-static bfd_boolean
-elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
-{
- struct elf_i386_link_hash_table *htab;
-
- if (!_bfd_elf_create_dynamic_sections (dynobj, info))
- return FALSE;
-
- htab = elf_i386_hash_table (info);
- if (htab == NULL)
- return FALSE;
-
- /* Set the contents of the .interp section to the interpreter. */
- if (bfd_link_executable (info) && !info->nointerp)
- {
- asection *s = bfd_get_linker_section (dynobj, ".interp");
- if (s == NULL)
- abort ();
- s->size = sizeof ELF_DYNAMIC_INTERPRETER;
- s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
- htab->interp = s;
- }
-
- if (get_elf_i386_backend_data (dynobj)->is_vxworks
- && !elf_vxworks_create_dynamic_sections (dynobj, info,
- &htab->srelplt2))
- return FALSE;
-
- if (!info->no_ld_generated_unwind_info
- && htab->plt_eh_frame == NULL
- && htab->elf.splt != NULL)
- {
- flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
- | SEC_HAS_CONTENTS | SEC_IN_MEMORY
- | SEC_LINKER_CREATED);
- htab->plt_eh_frame
- = bfd_make_section_anyway_with_flags (dynobj, ".eh_frame", flags);
- if (htab->plt_eh_frame == NULL
- || !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 2))
- return FALSE;
- }
-
- return TRUE;
-}
-
-/* Copy the extra info we tack onto an elf_link_hash_entry. */
-
-static void
-elf_i386_copy_indirect_symbol (struct bfd_link_info *info,
- struct elf_link_hash_entry *dir,
- struct elf_link_hash_entry *ind)
-{
- struct elf_i386_link_hash_entry *edir, *eind;
-
- edir = (struct elf_i386_link_hash_entry *) dir;
- eind = (struct elf_i386_link_hash_entry *) ind;
-
- if (eind->dyn_relocs != NULL)
- {
- if (edir->dyn_relocs != NULL)
- {
- struct elf_dyn_relocs **pp;
- struct elf_dyn_relocs *p;
-
- /* Add reloc counts against the indirect sym to the direct sym
- list. Merge any entries against the same section. */
- for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
- {
- struct elf_dyn_relocs *q;
-
- for (q = edir->dyn_relocs; q != NULL; q = q->next)
- if (q->sec == p->sec)
- {
- q->pc_count += p->pc_count;
- q->count += p->count;
- *pp = p->next;
- break;
- }
- if (q == NULL)
- pp = &p->next;
- }
- *pp = edir->dyn_relocs;
- }
-
- edir->dyn_relocs = eind->dyn_relocs;
- eind->dyn_relocs = NULL;
- }
-
- if (ind->root.type == bfd_link_hash_indirect
- && dir->got.refcount <= 0)
- {
- edir->tls_type = eind->tls_type;
- eind->tls_type = GOT_UNKNOWN;
- }
-
- /* Copy gotoff_ref so that elf_i386_adjust_dynamic_symbol will
- generate a R_386_COPY reloc. */
- edir->gotoff_ref |= eind->gotoff_ref;
-
- edir->has_got_reloc |= eind->has_got_reloc;
- edir->has_non_got_reloc |= eind->has_non_got_reloc;
-
- if (ELIMINATE_COPY_RELOCS
- && ind->root.type != bfd_link_hash_indirect
- && dir->dynamic_adjusted)
- {
- /* If called to transfer flags for a weakdef during processing
- of elf_adjust_dynamic_symbol, don't copy non_got_ref.
- We clear it ourselves for ELIMINATE_COPY_RELOCS. */
- if (dir->versioned != versioned_hidden)
- dir->ref_dynamic |= ind->ref_dynamic;
- dir->ref_regular |= ind->ref_regular;
- dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
- dir->needs_plt |= ind->needs_plt;
- dir->pointer_equality_needed |= ind->pointer_equality_needed;
- }
- else
- {
- if (eind->func_pointer_refcount > 0)
- {
- edir->func_pointer_refcount += eind->func_pointer_refcount;
- eind->func_pointer_refcount = 0;
- }
-
- _bfd_elf_link_hash_copy_indirect (info, dir, ind);
- }
-}
-
/* Return TRUE if the TLS access code sequence support transition
from R_TYPE. */
struct elf_link_hash_entry *h;
bfd_vma offset;
bfd_byte *call;
- bfd_boolean indirect_call, tls_get_addr;
+ bfd_boolean indirect_call;
offset = rel->r_offset;
switch (r_type)
if (r_symndx < symtab_hdr->sh_info)
return FALSE;
- tls_get_addr = FALSE;
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- if (h != NULL && h->root.root.string != NULL)
- {
- struct elf_i386_link_hash_entry *eh
- = (struct elf_i386_link_hash_entry *) h;
- tls_get_addr = eh->tls_get_addr == 1;
- if (eh->tls_get_addr > 1)
- {
- /* Use strncmp to check ___tls_get_addr since
- ___tls_get_addr may be versioned. */
- if (strncmp (h->root.root.string, "___tls_get_addr", 15)
- == 0)
- {
- eh->tls_get_addr = 1;
- tls_get_addr = TRUE;
- }
- else
- eh->tls_get_addr = 0;
- }
- }
-
- if (!tls_get_addr)
+ if (h == NULL
+ || !((struct elf_x86_link_hash_entry *) h)->tls_get_addr)
return FALSE;
else if (indirect_call)
return (ELF32_R_TYPE (rel[1].r_info) == R_386_GOT32X);
name = h->root.root.string;
else
{
- struct elf_i386_link_hash_table *htab;
+ struct elf_x86_link_hash_table *htab;
- htab = elf_i386_hash_table (info);
+ htab = elf_x86_hash_table (info, I386_ELF_DATA);
if (htab == NULL)
name = "*unknown*";
else
_bfd_error_handler
/* xgettext:c-format */
- (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
+ (_("%B: TLS transition from %s to %s against `%s' at %#Lx "
"in section `%A' failed"),
abfd, from->name, to->name, name,
- (unsigned long) rel->r_offset, sec);
+ rel->r_offset, sec);
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
bfd_boolean *converted,
struct bfd_link_info *link_info)
{
- struct elf_i386_link_hash_table *htab;
+ struct elf_x86_link_hash_table *htab;
unsigned int opcode;
unsigned int modrm;
bfd_boolean baseless;
if (addend != 0)
return TRUE;
- htab = elf_i386_hash_table (link_info);
+ htab = elf_x86_hash_table (link_info, I386_ELF_DATA);
is_pic = bfd_link_pic (link_info);
r_type = ELF32_R_TYPE (irel->r_info);
/* Undefined weak symbol is only bound locally in executable
and its reference is resolved as 0. */
- if (UNDEFINED_WEAK_RESOLVED_TO_ZERO (link_info, TRUE,
- elf_i386_hash_entry (h)))
+ if (UNDEFINED_WEAK_RESOLVED_TO_ZERO (link_info, I386_ELF_DATA, TRUE,
+ elf_x86_hash_entry (h)))
{
if (opcode == 0xff)
{
/* Convert R_386_GOT32X to R_386_PC32. */
if (modrm == 0x15 || (modrm & 0xf8) == 0x90)
{
- struct elf_i386_link_hash_entry *eh
- = (struct elf_i386_link_hash_entry *) h;
+ struct elf_x86_link_hash_entry *eh
+ = (struct elf_x86_link_hash_entry *) h;
/* Convert to "nop call foo". ADDR_PREFIX_OPCODE
is a nop prefix. */
modrm = 0xe8;
/* To support TLS optimization, always use addr32 prefix
for "call *___tls_get_addr@GOT(%reg)". */
- if (eh && eh->tls_get_addr == 1)
+ if (eh && eh->tls_get_addr)
{
nop = 0x67;
nop_offset = irel->r_offset - 2;
return TRUE;
/* def_regular is set by an assignment in a linker script in
- bfd_elf_record_link_assignment. */
- if ((h->def_regular
- || h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- && SYMBOL_REFERENCES_LOCAL (link_info, h))
+ bfd_elf_record_link_assignment. start_stop is set on
+ __start_SECNAME/__stop_SECNAME which mark section SECNAME. */
+ if (h->start_stop
+ || ((h->def_regular
+ || h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && SYMBOL_REFERENCES_LOCAL (link_info, h)))
{
convert_load:
if (opcode == 0x8b)
asection *sec,
const Elf_Internal_Rela *relocs)
{
- struct elf_i386_link_hash_table *htab;
+ struct elf_x86_link_hash_table *htab;
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
const Elf_Internal_Rela *rel;
const Elf_Internal_Rela *rel_end;
asection *sreloc;
bfd_byte *contents;
- bfd_boolean use_plt_got;
if (bfd_link_relocatable (info))
return TRUE;
BFD_ASSERT (is_i386_elf (abfd));
- htab = elf_i386_hash_table (info);
+ htab = elf_x86_hash_table (info, I386_ELF_DATA);
if (htab == NULL)
{
sec->check_relocs_failed = 1;
return FALSE;
}
- use_plt_got = (!get_elf_i386_backend_data (abfd)->is_vxworks
- && (get_elf_i386_backend_data (abfd)
- == &elf_i386_arch_bed));
-
symtab_hdr = &elf_symtab_hdr (abfd);
sym_hashes = elf_sym_hashes (abfd);
for (rel = relocs; rel < rel_end; rel++)
{
unsigned int r_type;
- unsigned long r_symndx;
+ unsigned int r_symndx;
struct elf_link_hash_entry *h;
- struct elf_i386_link_hash_entry *eh;
+ struct elf_x86_link_hash_entry *eh;
Elf_Internal_Sym *isym;
const char *name;
bfd_boolean size_reloc;
/* Check relocation against local STT_GNU_IFUNC symbol. */
if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
{
- h = elf_i386_get_local_sym_hash (htab, abfd, rel, TRUE);
+ h = _bfd_elf_x86_get_local_sym_hash (htab, abfd, rel, TRUE);
if (h == NULL)
goto error_return;
/* Fake a STT_GNU_IFUNC symbol. */
+ h->root.root.string = bfd_elf_sym_name (abfd, symtab_hdr,
+ isym, NULL);
h->type = STT_GNU_IFUNC;
h->def_regular = 1;
h->ref_regular = 1;
h = (struct elf_link_hash_entry *) h->root.u.i.link;
}
- eh = (struct elf_i386_link_hash_entry *) h;
+ eh = (struct elf_x86_link_hash_entry *) h;
if (h != NULL)
{
- switch (r_type)
- {
- default:
- break;
-
- case R_386_GOTOFF:
- eh->gotoff_ref = 1;
- /* Fall through. */
- case R_386_32:
- case R_386_PC32:
- case R_386_PLT32:
- case R_386_GOT32:
- case R_386_GOT32X:
- if (htab->elf.dynobj == NULL)
- htab->elf.dynobj = abfd;
- /* Create the ifunc sections for static executables. */
- if (h->type == STT_GNU_IFUNC
- && !_bfd_elf_create_ifunc_sections (htab->elf.dynobj,
- info))
- goto error_return;
- break;
- }
+ if (r_type == R_386_GOTOFF)
+ eh->gotoff_ref = 1;
/* It is referenced by a non-shared object. */
h->ref_regular = 1;
- h->root.non_ir_ref = 1;
+ h->root.non_ir_ref_regular = 1;
if (h->type == STT_GNU_IFUNC)
elf_tdata (info->output_bfd)->has_gnu_symbols
switch (r_type)
{
case R_386_TLS_LDM:
- htab->tls_ldm_got.refcount += 1;
+ htab->tls_ld_or_ldm_got.refcount += 1;
goto create_got;
case R_386_PLT32:
if (h != NULL)
{
h->got.refcount += 1;
- old_tls_type = elf_i386_hash_entry(h)->tls_type;
+ old_tls_type = elf_x86_hash_entry (h)->tls_type;
}
else
{
if (local_got_refcounts == NULL)
goto error_return;
elf_local_got_refcounts (abfd) = local_got_refcounts;
- elf_i386_local_tlsdesc_gotent (abfd)
+ elf_x86_local_tlsdesc_gotent (abfd)
= (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
- elf_i386_local_got_tls_type (abfd)
+ elf_x86_local_got_tls_type (abfd)
= (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
}
local_got_refcounts[r_symndx] += 1;
- old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
+ old_tls_type = elf_x86_local_got_tls_type (abfd) [r_symndx];
}
if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
if (old_tls_type != tls_type)
{
if (h != NULL)
- elf_i386_hash_entry (h)->tls_type = tls_type;
+ elf_x86_hash_entry (h)->tls_type = tls_type;
else
- elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
+ elf_x86_local_got_tls_type (abfd) [r_symndx] = tls_type;
}
}
/* Fall through */
case R_386_GOTOFF:
case R_386_GOTPC:
create_got:
- if (htab->elf.sgot == NULL)
- {
- if (htab->elf.dynobj == NULL)
- htab->elf.dynobj = abfd;
- if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
- goto error_return;
- }
if (r_type != R_386_TLS_IE)
{
if (eh != NULL)
else if (h->type == STT_GNU_IFUNC
&& bfd_link_pic (info))
{
- if (isym == NULL)
- name = h->root.root.string;
- else
- name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
- NULL);
- _bfd_error_handler
- /* xgettext:c-format */
- (_("%B: unsupported non-PIC call to IFUNC `%s'"),
- abfd, name);
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%B: unsupported non-PIC call to IFUNC `%s'"),
+ abfd, h->root.root.string);
bfd_set_error (bfd_error_bad_value);
goto error_return;
}
this reloc. */
if (sreloc == NULL)
{
- if (htab->elf.dynobj == NULL)
- htab->elf.dynobj = abfd;
-
sreloc = _bfd_elf_make_dynamic_reloc_section
(sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
break;
}
- if (use_plt_got
- && h != NULL
- && h->plt.refcount > 0
- && (((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed)
- || h->got.refcount > 0)
- && htab->plt_got == NULL)
- {
- /* Create the GOT procedure linkage table. */
- unsigned int plt_got_align;
- const struct elf_backend_data *bed;
-
- bed = get_elf_backend_data (info->output_bfd);
- BFD_ASSERT (sizeof (elf_i386_got_plt_entry) == 8
- && (sizeof (elf_i386_got_plt_entry)
- == sizeof (elf_i386_pic_got_plt_entry)));
- plt_got_align = 3;
-
- if (htab->elf.dynobj == NULL)
- htab->elf.dynobj = abfd;
- htab->plt_got
- = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
- ".plt.got",
- (bed->dynamic_sec_flags
- | SEC_ALLOC
- | SEC_CODE
- | SEC_LOAD
- | SEC_READONLY));
- if (htab->plt_got == NULL
- || !bfd_set_section_alignment (htab->elf.dynobj,
- htab->plt_got,
- plt_got_align))
- goto error_return;
-
- if (!info->no_ld_generated_unwind_info
- && htab->plt_got_eh_frame == NULL
- && get_elf_i386_backend_data (abfd)->plt->eh_frame_plt_got != NULL)
- {
- flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
- | SEC_HAS_CONTENTS | SEC_IN_MEMORY
- | SEC_LINKER_CREATED);
- htab->plt_got_eh_frame
- = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
- ".eh_frame",
- flags);
- if (htab->plt_got_eh_frame == NULL
- || !bfd_set_section_alignment (htab->elf.dynobj,
- htab->plt_got_eh_frame,
- 2))
- goto error_return;
- }
- }
-
if (r_type == R_386_GOT32X
&& (h == NULL || h->type != STT_GNU_IFUNC))
sec->need_convert_load = 1;
return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
}
-/* Remove undefined weak symbol from the dynamic symbol table if it
- is resolved to 0. */
-
-static bfd_boolean
-elf_i386_fixup_symbol (struct bfd_link_info *info,
- struct elf_link_hash_entry *h)
-{
- if (h->dynindx != -1
- && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
- elf_i386_hash_entry (h)->has_got_reloc,
- elf_i386_hash_entry (h)))
- {
- h->dynindx = -1;
- _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
- h->dynstr_index);
- }
- return TRUE;
-}
-
/* Adjust a symbol defined by a dynamic object and referenced by a
regular object. The current definition is in some section of the
dynamic object, but we're not including those sections. We have to
elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
struct elf_link_hash_entry *h)
{
- struct elf_i386_link_hash_table *htab;
+ struct elf_x86_link_hash_table *htab;
asection *s, *srel;
- struct elf_i386_link_hash_entry *eh;
+ struct elf_x86_link_hash_entry *eh;
struct elf_dyn_relocs *p;
/* STT_GNU_IFUNC symbol must go through PLT. */
bfd_size_type pc_count = 0, count = 0;
struct elf_dyn_relocs **pp;
- eh = (struct elf_i386_link_hash_entry *) h;
+ eh = (struct elf_x86_link_hash_entry *) h;
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
{
pc_count += p->pc_count;
the link may change h->type. So fix it now. */
h->plt.offset = (bfd_vma) -1;
+ eh = (struct elf_x86_link_hash_entry *) h;
+
/* If this is a weak symbol, and there is a real definition, the
processor independent code will have arranged for us to see the
real definition first, and we can just use the same value. */
|| h->u.weakdef->root.type == bfd_link_hash_defweak);
h->root.u.def.section = h->u.weakdef->root.u.def.section;
h->root.u.def.value = h->u.weakdef->root.u.def.value;
- if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
+ if (ELIMINATE_COPY_RELOCS
+ || info->nocopyreloc
+ || SYMBOL_NO_COPYRELOC (info, eh))
h->non_got_ref = h->u.weakdef->non_got_ref;
return TRUE;
}
/* If there are no references to this symbol that do not use the
GOT nor R_386_GOTOFF relocation, we don't need to generate a copy
reloc. */
- eh = (struct elf_i386_link_hash_entry *) h;
if (!h->non_got_ref && !eh->gotoff_ref)
return TRUE;
/* If -z nocopyreloc was given, we won't generate them either. */
- if (info->nocopyreloc)
+ if (info->nocopyreloc || SYMBOL_NO_COPYRELOC (info, eh))
{
h->non_got_ref = 0;
return TRUE;
}
- htab = elf_i386_hash_table (info);
+ htab = elf_x86_hash_table (info, I386_ELF_DATA);
if (htab == NULL)
return FALSE;
relocations) in an executable. */
if (ELIMINATE_COPY_RELOCS
&& !eh->gotoff_ref
- && !get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
+ && get_elf_i386_backend_data (info->output_bfd)->os != is_vxworks)
{
for (p = eh->dyn_relocs; p != NULL; p = p->next)
{
elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
{
struct bfd_link_info *info;
- struct elf_i386_link_hash_table *htab;
- struct elf_i386_link_hash_entry *eh;
+ struct elf_x86_link_hash_table *htab;
+ struct elf_x86_link_hash_entry *eh;
struct elf_dyn_relocs *p;
unsigned plt_entry_size;
bfd_boolean resolved_to_zero;
+ const struct elf_i386_backend_data *bed;
if (h->root.type == bfd_link_hash_indirect)
return TRUE;
- eh = (struct elf_i386_link_hash_entry *) h;
+ eh = (struct elf_x86_link_hash_entry *) h;
info = (struct bfd_link_info *) inf;
- htab = elf_i386_hash_table (info);
+ htab = elf_x86_hash_table (info, I386_ELF_DATA);
if (htab == NULL)
return FALSE;
- plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
+ bed = get_elf_i386_backend_data (info->output_bfd);
+
+ plt_entry_size = htab->plt.plt_entry_size;
resolved_to_zero = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
+ I386_ELF_DATA,
eh->has_got_reloc,
eh);
here if it is defined and referenced in a non-shared object. */
if (h->type == STT_GNU_IFUNC
&& h->def_regular)
- return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, &eh->dyn_relocs,
- &htab->readonly_dynrelocs_against_ifunc,
- plt_entry_size,
- plt_entry_size, 4, TRUE);
- /* Don't create the PLT entry if there are only function pointer
- relocations which can be resolved at run-time. */
- else if (htab->elf.dynamic_sections_created
- && (h->plt.refcount > eh->func_pointer_refcount
- || eh->plt_got.refcount > 0))
{
- bfd_boolean use_plt_got;
-
- /* Clear the reference count of function pointer relocations
- if PLT is used. */
- eh->func_pointer_refcount = 0;
-
- if ((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed)
+ if (_bfd_elf_allocate_ifunc_dyn_relocs (info, h, &eh->dyn_relocs,
+ &htab->readonly_dynrelocs_against_ifunc,
+ plt_entry_size,
+ (htab->plt.has_plt0
+ * plt_entry_size),
+ 4, TRUE))
{
- /* Don't use the regular PLT for DF_BIND_NOW. */
- h->plt.offset = (bfd_vma) -1;
+ asection *s = htab->plt_second;
+ if (h->plt.offset != (bfd_vma) -1 && s != NULL)
+ {
+ /* Use the second PLT section if it is created. */
+ eh->plt_second.offset = s->size;
- /* Use the GOT PLT. */
- h->got.refcount = 1;
- eh->plt_got.refcount = 1;
+ /* Make room for this entry in the second PLT section. */
+ s->size += htab->non_lazy_plt->plt_entry_size;
+ }
+
+ return TRUE;
}
+ else
+ return FALSE;
+ }
+ /* Don't create the PLT entry if there are only function pointer
+ relocations which can be resolved at run-time. */
+ else if (htab->elf.dynamic_sections_created
+ && (h->plt.refcount > eh->func_pointer_refcount
+ || eh->plt_got.refcount > 0))
+ {
+ bfd_boolean use_plt_got = eh->plt_got.refcount > 0;
- use_plt_got = eh->plt_got.refcount > 0;
+ /* Clear the reference count of function pointer relocations
+ if PLT is used. */
+ eh->func_pointer_refcount = 0;
/* Make sure this symbol is output as a dynamic symbol.
Undefined weak syms won't yet be marked as dynamic. */
if (h->dynindx == -1
&& !h->forced_local
- && !resolved_to_zero)
+ && !resolved_to_zero
+ && h->root.type == bfd_link_hash_undefweak)
{
if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
|| WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
{
asection *s = htab->elf.splt;
+ asection *second_s = htab->plt_second;
asection *got_s = htab->plt_got;
/* If this is the first .plt entry, make room for the special
first entry. The .plt section is used by prelink to undo
prelinking for dynamic relocations. */
if (s->size == 0)
- s->size = plt_entry_size;
+ s->size = htab->plt.has_plt0 * plt_entry_size;
if (use_plt_got)
eh->plt_got.offset = got_s->size;
else
- h->plt.offset = s->size;
+ {
+ h->plt.offset = s->size;
+ if (second_s)
+ eh->plt_second.offset = second_s->size;
+ }
/* If this symbol is not defined in a regular file, and we are
not generating a shared library, then set the symbol to this
}
else
{
- h->root.u.def.section = s;
- h->root.u.def.value = h->plt.offset;
+ if (second_s)
+ {
+ /* We need to make a call to the entry of the
+ second PLT instead of regular PLT entry. */
+ h->root.u.def.section = second_s;
+ h->root.u.def.value = eh->plt_second.offset;
+ }
+ else
+ {
+ h->root.u.def.section = s;
+ h->root.u.def.value = h->plt.offset;
+ }
}
}
/* Make room for this entry. */
if (use_plt_got)
- got_s->size += sizeof (elf_i386_got_plt_entry);
+ got_s->size += htab->non_lazy_plt->plt_entry_size;
else
{
s->size += plt_entry_size;
+ if (second_s)
+ second_s->size += htab->non_lazy_plt->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
}
}
- if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks
- && !bfd_link_pic (info))
+ if (bed->os == is_vxworks && !bfd_link_pic (info))
{
/* VxWorks has a second set of relocations for each PLT entry
in executables. They go in a separate relocation section,
R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
+ asection *srelplt2 = htab->srelplt2;
if (h->plt.offset == plt_entry_size)
- htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
+ srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
/* There are two extra relocations for each subsequent PLT entry:
an R_386_32 relocation for the GOT entry, and an R_386_32
relocation for the PLT entry. */
- htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
+ srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
}
}
else
if (h->got.refcount > 0
&& bfd_link_executable (info)
&& h->dynindx == -1
- && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
+ && (elf_x86_hash_entry (h)->tls_type & GOT_TLS_IE))
h->got.offset = (bfd_vma) -1;
else if (h->got.refcount > 0)
{
asection *s;
bfd_boolean dyn;
- int tls_type = elf_i386_hash_entry(h)->tls_type;
+ int tls_type = elf_x86_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.
- PR ld/21402: If this symbol isn't undefined weak symbol,
- don't make it dynamic in PIE. */
+ Undefined weak syms won't yet be marked as dynamic. */
if (h->dynindx == -1
&& !h->forced_local
&& !resolved_to_zero
- && (h->root.type == bfd_link_hash_undefweak
- || !bfd_link_pie (info)))
+ && h->root.type == bfd_link_hash_undefweak)
{
if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
}
}
- if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
+ if (bed->os == is_vxworks)
{
struct elf_dyn_relocs **pp;
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
Undefined weak syms won't yet be marked as dynamic. */
if (h->dynindx == -1
&& !h->forced_local
- && !resolved_to_zero)
+ && !resolved_to_zero
+ && h->root.type == bfd_link_hash_undefweak)
{
if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
return elf_i386_allocate_dynrelocs (h, inf);
}
-/* Find any dynamic relocs that apply to read-only sections. */
-
-static bfd_boolean
-elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
-{
- struct elf_i386_link_hash_entry *eh;
- struct elf_dyn_relocs *p;
-
- /* Skip local IFUNC symbols. */
- if (h->forced_local && h->type == STT_GNU_IFUNC)
- return TRUE;
-
- eh = (struct elf_i386_link_hash_entry *) h;
- for (p = eh->dyn_relocs; p != NULL; p = p->next)
- {
- asection *s = p->sec->output_section;
-
- if (s != NULL && (s->flags & SEC_READONLY) != 0)
- {
- struct bfd_link_info *info = (struct bfd_link_info *) inf;
-
- info->flags |= DF_TEXTREL;
-
- if ((info->warn_shared_textrel && bfd_link_pic (info))
- || info->error_textrel)
- /* xgettext:c-format */
- 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;
- }
- }
- return TRUE;
-}
-
/* Convert load via the GOT slot to load immediate. */
static bfd_boolean
elf_i386_convert_load (bfd *abfd, asection *sec,
struct bfd_link_info *link_info)
{
- struct elf_i386_link_hash_table *htab;
+ struct elf_x86_link_hash_table *htab;
Elf_Internal_Shdr *symtab_hdr;
Elf_Internal_Rela *internal_relocs;
Elf_Internal_Rela *irel, *irelend;
return FALSE;
changed = FALSE;
- htab = elf_i386_hash_table (link_info);
+ htab = elf_x86_hash_table (link_info, I386_ELF_DATA);
local_got_refcounts = elf_local_got_refcounts (abfd);
/* Get the section contents. */
r_symndx = ELF32_R_SYM (irel->r_info);
if (r_symndx < symtab_hdr->sh_info)
- h = elf_i386_get_local_sym_hash (htab, sec->owner,
- (const Elf_Internal_Rela *) irel,
- FALSE);
+ h = _bfd_elf_x86_get_local_sym_hash (htab, sec->owner,
+ (const Elf_Internal_Rela *) irel,
+ FALSE);
else
{
h = elf_sym_hashes (abfd)[r_symndx - symtab_hdr->sh_info];
static bfd_boolean
elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
{
- struct elf_i386_link_hash_table *htab;
+ struct elf_x86_link_hash_table *htab;
bfd *dynobj;
asection *s;
bfd_boolean relocs;
bfd *ibfd;
- htab = elf_i386_hash_table (info);
+ htab = elf_x86_hash_table (info, I386_ELF_DATA);
if (htab == NULL)
return FALSE;
dynobj = htab->elf.dynobj;
linker script /DISCARD/, so we'll be discarding
the relocs too. */
}
- else if (get_elf_i386_backend_data (output_bfd)->is_vxworks
+ else if ((get_elf_i386_backend_data (output_bfd)->os
+ == is_vxworks)
&& strcmp (p->sec->output_section->name,
".tls_vars") == 0)
{
symtab_hdr = &elf_symtab_hdr (ibfd);
locsymcount = symtab_hdr->sh_info;
end_local_got = local_got + locsymcount;
- local_tls_type = elf_i386_local_got_tls_type (ibfd);
- local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
+ local_tls_type = elf_x86_local_got_tls_type (ibfd);
+ local_tlsdesc_gotent = elf_x86_local_tlsdesc_gotent (ibfd);
s = htab->elf.sgot;
srel = htab->elf.srelgot;
for (; local_got < end_local_got;
}
}
- if (htab->tls_ldm_got.refcount > 0)
+ if (htab->tls_ld_or_ldm_got.refcount > 0)
{
/* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
relocs. */
- htab->tls_ldm_got.offset = htab->elf.sgot->size;
+ htab->tls_ld_or_ldm_got.offset = htab->elf.sgot->size;
htab->elf.sgot->size += 8;
htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
}
else
- htab->tls_ldm_got.offset = -1;
+ htab->tls_ld_or_ldm_got.offset = -1;
/* Allocate global sym .plt and .got entries, and space for global
sym dynamic relocs. */
&& htab->elf.splt != NULL
&& htab->elf.splt->size != 0
&& !bfd_is_abs_section (htab->elf.splt->output_section))
- htab->plt_eh_frame->size
- = get_elf_i386_backend_data (output_bfd)->plt->eh_frame_plt_size;
+ htab->plt_eh_frame->size = htab->plt.eh_frame_plt_size;
if (htab->plt_got_eh_frame != NULL
&& htab->plt_got != NULL
&& htab->plt_got->size != 0
&& !bfd_is_abs_section (htab->plt_got->output_section))
htab->plt_got_eh_frame->size
- = get_elf_i386_backend_data (output_bfd)->plt->eh_frame_plt_got_size;
+ = htab->non_lazy_plt->eh_frame_plt_size;
+
+ /* Unwind info for the second PLT and .plt.got sections are
+ identical. */
+ if (htab->plt_second_eh_frame != NULL
+ && htab->plt_second != NULL
+ && htab->plt_second->size != 0
+ && !bfd_is_abs_section (htab->plt_second->output_section))
+ htab->plt_second_eh_frame->size
+ = htab->non_lazy_plt->eh_frame_plt_size;
}
/* We now have determined the sizes of the various dynamic sections.
else if (s == htab->elf.sgotplt
|| s == htab->elf.iplt
|| s == htab->elf.igotplt
+ || s == htab->plt_second
|| s == htab->plt_got
|| s == htab->plt_eh_frame
|| s == htab->plt_got_eh_frame
+ || s == htab->plt_second_eh_frame
|| s == htab->elf.sdynbss
|| s == htab->elf.sdynrelro)
{
&& htab->plt_eh_frame->contents != NULL)
{
memcpy (htab->plt_eh_frame->contents,
- get_elf_i386_backend_data (output_bfd)->plt->eh_frame_plt,
+ htab->plt.eh_frame_plt,
htab->plt_eh_frame->size);
bfd_put_32 (dynobj, htab->elf.splt->size,
htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
&& htab->plt_got_eh_frame->contents != NULL)
{
memcpy (htab->plt_got_eh_frame->contents,
- get_elf_i386_backend_data (output_bfd)->plt->eh_frame_plt_got,
+ htab->non_lazy_plt->eh_frame_plt,
htab->plt_got_eh_frame->size);
bfd_put_32 (dynobj, htab->plt_got->size,
(htab->plt_got_eh_frame->contents
+ PLT_FDE_LEN_OFFSET));
}
+ if (htab->plt_second_eh_frame != NULL
+ && htab->plt_second_eh_frame->contents != NULL)
+ {
+ memcpy (htab->plt_second_eh_frame->contents,
+ htab->non_lazy_plt->eh_frame_plt,
+ htab->plt_second_eh_frame->size);
+ bfd_put_32 (dynobj, htab->plt_second->size,
+ (htab->plt_second_eh_frame->contents
+ + PLT_FDE_LEN_OFFSET));
+ }
+
if (htab->elf.dynamic_sections_created)
{
/* Add some entries to the .dynamic section. We fill in the
relocation. */
if (!add_dynamic_entry (DT_PLTGOT, 0))
return FALSE;
+ }
- if (htab->elf.srelplt->size != 0)
- {
- if (!add_dynamic_entry (DT_PLTRELSZ, 0)
- || !add_dynamic_entry (DT_PLTREL, DT_REL)
- || !add_dynamic_entry (DT_JMPREL, 0))
- return FALSE;
- }
+ if (htab->elf.srelplt->size != 0)
+ {
+ if (!add_dynamic_entry (DT_PLTRELSZ, 0)
+ || !add_dynamic_entry (DT_PLTREL, DT_REL)
+ || !add_dynamic_entry (DT_JMPREL, 0))
+ return FALSE;
}
if (relocs)
then we need a DT_TEXTREL entry. */
if ((info->flags & DF_TEXTREL) == 0)
elf_link_hash_traverse (&htab->elf,
- elf_i386_readonly_dynrelocs, info);
+ _bfd_x86_elf_readonly_dynrelocs,
+ info);
if ((info->flags & DF_TEXTREL) != 0)
{
return FALSE;
}
}
- if (get_elf_i386_backend_data (output_bfd)->is_vxworks
+ if (get_elf_i386_backend_data (output_bfd)->os == is_vxworks
&& !elf_vxworks_add_dynamic_entries (output_bfd, info))
return FALSE;
}
return TRUE;
}
-static bfd_boolean
-elf_i386_always_size_sections (bfd *output_bfd,
- struct bfd_link_info *info)
-{
- asection *tls_sec = elf_hash_table (info)->tls_sec;
-
- if (tls_sec)
- {
- struct elf_link_hash_entry *tlsbase;
-
- tlsbase = elf_link_hash_lookup (elf_hash_table (info),
- "_TLS_MODULE_BASE_",
- FALSE, FALSE, FALSE);
-
- if (tlsbase && tlsbase->type == STT_TLS)
- {
- struct elf_i386_link_hash_table *htab;
- struct bfd_link_hash_entry *bh = NULL;
- const struct elf_backend_data *bed
- = get_elf_backend_data (output_bfd);
-
- htab = elf_i386_hash_table (info);
- if (htab == NULL)
- return FALSE;
-
- if (!(_bfd_generic_link_add_one_symbol
- (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
- tls_sec, 0, NULL, FALSE,
- bed->collect, &bh)))
- return FALSE;
-
- htab->tls_module_base = bh;
-
- tlsbase = (struct elf_link_hash_entry *)bh;
- tlsbase->def_regular = 1;
- tlsbase->other = STV_HIDDEN;
- tlsbase->root.linker_def = 1;
- (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
- }
- }
-
- return TRUE;
-}
-
/* Set the correct type for an x86 ELF section. We do this by the
section name, which is a hack, but ought to work. */
return TRUE;
}
-/* _TLS_MODULE_BASE_ needs to be treated especially when linking
- executables. Rather than setting it to the beginning of the TLS
- section, we have to set it to the end. This function may be called
- multiple times, it is idempotent. */
-
-static void
-elf_i386_set_tls_module_base (struct bfd_link_info *info)
-{
- struct elf_i386_link_hash_table *htab;
- struct bfd_link_hash_entry *base;
-
- if (!bfd_link_executable (info))
- return;
-
- htab = elf_i386_hash_table (info);
- if (htab == NULL)
- return;
-
- base = htab->tls_module_base;
- if (base == NULL)
- return;
-
- base->u.def.value = htab->elf.tls_size;
-}
-
-/* Return the base VMA address which should be subtracted from real addresses
- when resolving @dtpoff relocation.
- This is PT_TLS segment p_vaddr. */
-
-static bfd_vma
-elf_i386_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)
- return 0;
- return elf_hash_table (info)->tls_sec->vma;
-}
-
/* Return the relocation value for @tpoff relocation
if STT_TLS virtual address is ADDRESS. */
Elf_Internal_Sym *local_syms,
asection **local_sections)
{
- struct elf_i386_link_hash_table *htab;
+ struct elf_x86_link_hash_table *htab;
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
bfd_vma *local_got_offsets;
if (input_section->check_relocs_failed)
return FALSE;
- htab = elf_i386_hash_table (info);
+ htab = elf_x86_hash_table (info, I386_ELF_DATA);
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 = elf_i386_local_tlsdesc_gotent (input_bfd);
+ local_tlsdesc_gotents = elf_x86_local_tlsdesc_gotent (input_bfd);
/* We have to handle relocations in vxworks .tls_vars sections
specially, because the dynamic loader is 'weird'. */
- is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks
+ is_vxworks_tls = ((get_elf_i386_backend_data (output_bfd)->os
+ == is_vxworks)
&& bfd_link_pic (info)
&& !strcmp (input_section->output_section->name,
".tls_vars"));
- elf_i386_set_tls_module_base (info);
+ _bfd_x86_elf_set_tls_module_base (info);
- plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
+ plt_entry_size = htab->plt.plt_entry_size;
rel = wrel = relocs;
relend = relocs + input_section->reloc_count;
reloc_howto_type *howto;
unsigned long r_symndx;
struct elf_link_hash_entry *h;
- struct elf_i386_link_hash_entry *eh;
+ struct elf_x86_link_hash_entry *eh;
Elf_Internal_Sym *sym;
asection *sec;
bfd_vma off, offplt, plt_offset;
>= R_386_ext - R_386_standard)
&& ((indx = r_type - R_386_tls_offset) - R_386_ext
>= R_386_ext2 - R_386_ext))
- {
- _bfd_error_handler
- /* xgettext:c-format */
- (_("%B: unrecognized relocation (0x%x) in section `%A'"),
- input_bfd, r_type, input_section);
- bfd_set_error (bfd_error_bad_value);
- return FALSE;
- }
+ return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
+
howto = elf_howto_table + indx;
r_symndx = ELF32_R_SYM (rel->r_info);
&& ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
{
/* Relocate against local STT_GNU_IFUNC symbol. */
- h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
- FALSE);
+ h = _bfd_elf_x86_get_local_sym_hash (htab, input_bfd, rel,
+ FALSE);
if (h == NULL)
abort ();
continue;
}
+ eh = (struct elf_x86_link_hash_entry *) h;
+
/* 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
&& h->type == STT_GNU_IFUNC
&& h->def_regular)
{
- asection *plt, *gotplt, *base_got;
+ asection *gotplt, *base_got;
bfd_vma plt_index;
const char *name;
/* STT_GNU_IFUNC symbol must go through PLT. */
if (htab->elf.splt != NULL)
{
- plt = htab->elf.splt;
+ if (htab->plt_second != NULL)
+ {
+ resolved_plt = htab->plt_second;
+ plt_offset = eh->plt_second.offset;
+ }
+ else
+ {
+ resolved_plt = htab->elf.splt;
+ plt_offset = h->plt.offset;
+ }
gotplt = htab->elf.sgotplt;
}
else
{
- plt = htab->elf.iplt;
+ resolved_plt = htab->elf.iplt;
+ plt_offset = h->plt.offset;
gotplt = htab->elf.igotplt;
}
if (htab->elf.splt != NULL)
{
- plt_index = h->plt.offset / plt_entry_size - 1;
+ plt_index = (h->plt.offset / plt_entry_size
+ - htab->plt.has_plt0);
off = (plt_index + 3) * 4;
base_got = htab->elf.sgotplt;
}
goto bad_ifunc_reloc;
}
- relocation = (plt->output_section->vma
- + plt->output_offset + h->plt.offset);
+ relocation = (resolved_plt->output_section->vma
+ + resolved_plt->output_offset + plt_offset);
switch (r_type)
{
|| h->forced_local
|| bfd_link_executable (info))
{
+ info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
+ h->root.root.string,
+ h->root.u.def.section->owner);
+
/* This symbol is resolved locally. */
outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
bfd_put_32 (output_bfd,
}
}
- eh = (struct elf_i386_link_hash_entry *) h;
resolved_to_zero = (eh != NULL
&& UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
+ I386_ELF_DATA,
eh->has_got_reloc,
eh));
+ (h->got.offset & ~1) - offplt);
else
/* Use GOTPLT entry. */
- relocation = (h->plt.offset / plt_entry_size - 1 + 3) * 4;
+ relocation = (h->plt.offset / plt_entry_size
+ - htab->plt.has_plt0 + 3) * 4;
if (!bfd_link_pic (info))
{
if (h->dynindx == -1
&& !h->forced_local
&& h->root.type != bfd_link_hash_undefweak
- && bfd_link_pie (info))
+ && bfd_link_pic (info))
{
/* PR ld/21402: If this symbol isn't dynamic
- in PIE, generate R_386_RELATIVE here. */
+ in PIC, generate R_386_RELATIVE here. */
eh->no_finish_dynamic_symbol = 1;
relative_reloc = TRUE;
}
if (h->plt.offset != (bfd_vma) -1)
{
- resolved_plt = htab->elf.splt;
- plt_offset = h->plt.offset;
+ if (htab->plt_second != NULL)
+ {
+ resolved_plt = htab->plt_second;
+ plt_offset = eh->plt_second.offset;
+ }
+ else
+ {
+ resolved_plt = htab->elf.splt;
+ plt_offset = h->plt.offset;
+ }
}
else
{
case R_386_TLS_GOTIE:
tls_type = GOT_UNKNOWN;
if (h == NULL && local_got_offsets)
- tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
+ tls_type = elf_x86_local_got_tls_type (input_bfd) [r_symndx];
else if (h != NULL)
- tls_type = elf_i386_hash_entry(h)->tls_type;
+ tls_type = elf_x86_hash_entry(h)->tls_type;
if (tls_type == GOT_TLS_IE)
tls_type = GOT_TLS_IE_NEG;
if (h != NULL)
{
off = h->got.offset;
- offplt = elf_i386_hash_entry (h)->tlsdesc_got;
+ offplt = elf_x86_hash_entry (h)->tlsdesc_got;
}
else
{
{
BFD_ASSERT (! unresolved_reloc);
bfd_put_32 (output_bfd,
- relocation - elf_i386_dtpoff_base (info),
+ relocation - _bfd_x86_elf_dtpoff_base (info),
htab->elf.sgotplt->contents + offplt
+ htab->sgotplt_jump_table_size + 4);
}
if (dr_type == R_386_TLS_TPOFF && indx == 0)
bfd_put_32 (output_bfd,
- relocation - elf_i386_dtpoff_base (info),
+ relocation - _bfd_x86_elf_dtpoff_base (info),
htab->elf.sgot->contents + off);
else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
bfd_put_32 (output_bfd,
- elf_i386_dtpoff_base (info) - relocation,
+ _bfd_x86_elf_dtpoff_base (info) - relocation,
htab->elf.sgot->contents + off);
else if (dr_type != R_386_TLS_DESC)
bfd_put_32 (output_bfd, 0,
{
BFD_ASSERT (! unresolved_reloc);
bfd_put_32 (output_bfd,
- relocation - elf_i386_dtpoff_base (info),
+ relocation - _bfd_x86_elf_dtpoff_base (info),
htab->elf.sgot->contents + off + 4);
}
else
{
bfd_put_32 (output_bfd,
(indx == 0
- ? relocation - elf_i386_dtpoff_base (info)
+ ? relocation - _bfd_x86_elf_dtpoff_base (info)
: 0),
htab->elf.sgot->contents + off + 4);
outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
if (htab->elf.sgot == NULL)
abort ();
- off = htab->tls_ldm_got.offset;
+ off = htab->tls_ld_or_ldm_got.offset;
if (off & 1)
off &= ~1;
else
htab->elf.sgot->contents + off + 4);
outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
elf_append_rel (output_bfd, htab->elf.srelgot, &outrel);
- htab->tls_ldm_got.offset |= 1;
+ htab->tls_ld_or_ldm_got.offset |= 1;
}
relocation = htab->elf.sgot->output_section->vma
+ htab->elf.sgot->output_offset + off
case R_386_TLS_LDO_32:
if (!bfd_link_executable (info)
|| (input_section->flags & SEC_CODE) == 0)
- relocation -= elf_i386_dtpoff_base (info);
+ relocation -= _bfd_x86_elf_dtpoff_base (info);
else
/* When converting LDO to LE, we must negate. */
relocation = -elf_i386_tpoff (info, relocation);
if (indx)
continue;
else if (r_type == R_386_TLS_LE_32)
- relocation = elf_i386_dtpoff_base (info) - relocation;
+ relocation = _bfd_x86_elf_dtpoff_base (info) - relocation;
else
- relocation -= elf_i386_dtpoff_base (info);
+ relocation -= _bfd_x86_elf_dtpoff_base (info);
}
else if (r_type == R_386_TLS_LE_32)
relocation = elf_i386_tpoff (info, relocation);
{
_bfd_error_handler
/* xgettext:c-format */
- (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
+ (_("%B(%A+%#Lx): unresolvable %s relocation against symbol `%s'"),
input_bfd,
input_section,
- (long) rel->r_offset,
+ rel->r_offset,
howto->name,
h->root.root.string);
return FALSE;
{
_bfd_error_handler
/* xgettext:c-format */
- (_("%B(%A+0x%lx): reloc against `%s': error %d"),
+ (_("%B(%A+%#Lx): reloc against `%s': error %d"),
input_bfd, input_section,
- (long) rel->r_offset, name, (int) r);
+ rel->r_offset, name, (int) r);
return FALSE;
}
}
struct elf_link_hash_entry *h,
Elf_Internal_Sym *sym)
{
- struct elf_i386_link_hash_table *htab;
+ struct elf_x86_link_hash_table *htab;
unsigned plt_entry_size;
const struct elf_i386_backend_data *abed;
- struct elf_i386_link_hash_entry *eh;
+ struct elf_x86_link_hash_entry *eh;
bfd_boolean local_undefweak;
+ bfd_boolean use_plt_second;
- htab = elf_i386_hash_table (info);
+ htab = elf_x86_hash_table (info, I386_ELF_DATA);
if (htab == NULL)
return FALSE;
abed = get_elf_i386_backend_data (output_bfd);
- plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
+ plt_entry_size = htab->plt.plt_entry_size;
- eh = (struct elf_i386_link_hash_entry *) h;
+ /* Use the second PLT section only if there is .plt section. */
+ use_plt_second = htab->elf.splt != NULL && htab->plt_second != NULL;
+
+ eh = (struct elf_x86_link_hash_entry *) h;
if (eh->no_finish_dynamic_symbol)
abort ();
/* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
resolved undefined weak symbols in executable so that their
references have value 0 at run-time. */
- local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
+ local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, I386_ELF_DATA,
eh->has_got_reloc,
eh);
if (h->plt.offset != (bfd_vma) -1)
{
- bfd_vma plt_index;
+ bfd_vma plt_index, plt_offset;
bfd_vma got_offset;
Elf_Internal_Rela rel;
bfd_byte *loc;
- asection *plt, *gotplt, *relplt;
+ asection *plt, *resolved_plt, *gotplt, *relplt;
/* When building a static executable, use .iplt, .igot.plt and
.rel.iplt sections for STT_GNU_IFUNC symbols. */
if (plt == htab->elf.splt)
{
- got_offset = h->plt.offset / plt_entry_size - 1;
+ got_offset = (h->plt.offset / plt_entry_size
+ - htab->plt.has_plt0);
got_offset = (got_offset + 3) * 4;
}
else
got_offset = got_offset * 4;
}
- /* Fill in the entry in the procedure linkage table. */
+ /* Fill in the entry in the procedure linkage table and update
+ the first slot. */
+ memcpy (plt->contents + h->plt.offset, htab->plt.plt_entry,
+ plt_entry_size);
+
+ if (use_plt_second)
+ {
+ const bfd_byte *plt_entry;
+ if (bfd_link_pic (info))
+ plt_entry = htab->non_lazy_plt->pic_plt_entry;
+ else
+ plt_entry = htab->non_lazy_plt->plt_entry;
+ memcpy (htab->plt_second->contents + eh->plt_second.offset,
+ plt_entry, htab->non_lazy_plt->plt_entry_size);
+
+ resolved_plt = htab->plt_second;
+ plt_offset = eh->plt_second.offset;
+ }
+ else
+ {
+ resolved_plt = plt;
+ plt_offset = h->plt.offset;
+ }
+
if (! bfd_link_pic (info))
{
- memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry,
- abed->plt->plt_entry_size);
bfd_put_32 (output_bfd,
(gotplt->output_section->vma
+ gotplt->output_offset
+ got_offset),
- plt->contents + h->plt.offset
- + abed->plt->plt_got_offset);
+ resolved_plt->contents + plt_offset
+ + htab->plt.plt_got_offset);
- if (abed->is_vxworks)
+ if (abed->os == is_vxworks)
{
int s, k, reloc_index;
for this PLT entry. */
/* S: Current slot number (zero-based). */
- s = ((h->plt.offset - abed->plt->plt_entry_size)
- / abed->plt->plt_entry_size);
+ s = ((h->plt.offset - htab->plt.plt_entry_size)
+ / htab->plt.plt_entry_size);
/* K: Number of relocations for PLTResolve. */
if (bfd_link_pic (info))
k = PLTRESOLVE_RELOCS_SHLIB;
loc = (htab->srelplt2->contents + reloc_index
* sizeof (Elf32_External_Rel));
- rel.r_offset = (htab->elf.splt->output_section->vma
- + htab->elf.splt->output_offset
+ rel.r_offset = (plt->output_section->vma
+ + plt->output_offset
+ h->plt.offset + 2),
rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
}
else
{
- memcpy (plt->contents + h->plt.offset, abed->plt->pic_plt_entry,
- abed->plt->plt_entry_size);
bfd_put_32 (output_bfd, got_offset,
- plt->contents + h->plt.offset
- + abed->plt->plt_got_offset);
+ resolved_plt->contents + plt_offset
+ + htab->plt.plt_got_offset);
}
/* Fill in the entry in the global offset table. Leave the entry
against undefined weak symbol in PIE. */
if (!local_undefweak)
{
- bfd_put_32 (output_bfd,
- (plt->output_section->vma
- + plt->output_offset
- + h->plt.offset
- + abed->plt->plt_lazy_offset),
- gotplt->contents + got_offset);
+ if (htab->plt.has_plt0)
+ bfd_put_32 (output_bfd,
+ (plt->output_section->vma
+ + plt->output_offset
+ + h->plt.offset
+ + htab->lazy_plt->plt_lazy_offset),
+ gotplt->contents + got_offset);
/* Fill in the entry in the .rel.plt section. */
rel.r_offset = (gotplt->output_section->vma
&& h->def_regular
&& h->type == STT_GNU_IFUNC))
{
+ info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
+ h->root.root.string,
+ h->root.u.def.section->owner);
+
/* If an STT_GNU_IFUNC symbol is locally defined, generate
R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
in the .got.plt section. */
loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
- /* Don't fill PLT entry for static executables. */
- if (plt == htab->elf.splt)
+ /* Don't fill the second and third slots in PLT entry for
+ static executables nor without PLT0. */
+ if (plt == htab->elf.splt && htab->plt.has_plt0)
{
bfd_put_32 (output_bfd,
plt_index * sizeof (Elf32_External_Rel),
plt->contents + h->plt.offset
- + abed->plt->plt_reloc_offset);
- bfd_put_32 (output_bfd, - (h->plt.offset
- + abed->plt->plt_plt_offset + 4),
- plt->contents + h->plt.offset
- + abed->plt->plt_plt_offset);
+ + htab->lazy_plt->plt_reloc_offset);
+ bfd_put_32 (output_bfd,
+ - (h->plt.offset
+ + htab->lazy_plt->plt_plt_offset + 4),
+ (plt->contents + h->plt.offset
+ + htab->lazy_plt->plt_plt_offset));
}
}
}
asection *plt, *got, *gotplt;
const bfd_byte *got_plt_entry;
- /* Offset of displacement of the indirect jump. */
- bfd_vma plt_got_offset = 2;
-
/* Set the entry in the GOT procedure linkage table. */
plt = htab->plt_got;
got = htab->elf.sgot;
/* Fill in the entry in the GOT procedure linkage table. */
if (! bfd_link_pic (info))
{
- got_plt_entry = elf_i386_got_plt_entry;
+ got_plt_entry = htab->non_lazy_plt->plt_entry;
got_offset += got->output_section->vma + got->output_offset;
}
else
{
- got_plt_entry = elf_i386_pic_got_plt_entry;
+ got_plt_entry = htab->non_lazy_plt->pic_plt_entry;
got_offset += (got->output_section->vma
+ got->output_offset
- gotplt->output_section->vma
plt_offset = eh->plt_got.offset;
memcpy (plt->contents + plt_offset, got_plt_entry,
- sizeof (elf_i386_got_plt_entry));
+ htab->non_lazy_plt->plt_entry_size);
bfd_put_32 (output_bfd, got_offset,
- plt->contents + plt_offset + plt_got_offset);
+ (plt->contents + plt_offset
+ + htab->non_lazy_plt->plt_got_offset));
}
if (!local_undefweak
/* Don't generate dynamic GOT relocation against undefined weak
symbol in executable. */
if (h->got.offset != (bfd_vma) -1
- && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
- && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0
+ && ! GOT_TLS_GD_ANY_P (elf_x86_hash_entry(h)->tls_type)
+ && (elf_x86_hash_entry(h)->tls_type & GOT_TLS_IE) == 0
&& !local_undefweak)
{
Elf_Internal_Rela rel;
}
if (SYMBOL_REFERENCES_LOCAL (info, h))
{
+ info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
+ h->root.root.string,
+ h->root.u.def.section->owner);
+
bfd_put_32 (output_bfd,
(h->root.u.def.value
+ h->root.u.def.section->output_section->vma
else
{
asection *plt;
+ bfd_vma plt_offset;
if (!h->pointer_equality_needed)
abort ();
/* For non-shared object, we can't use .got.plt, which
contains the real function addres if we need pointer
equality. We load the GOT entry with the PLT entry. */
- plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
+ if (htab->plt_second != NULL)
+ {
+ plt = htab->plt_second;
+ plt_offset = eh->plt_second.offset;
+ }
+ else
+ {
+ plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
+ plt_offset = h->plt.offset;
+ }
bfd_put_32 (output_bfd,
(plt->output_section->vma
- + plt->output_offset + h->plt.offset),
+ + plt->output_offset + plt_offset),
htab->elf.sgot->contents + h->got.offset);
return TRUE;
}
return TRUE;
return elf_i386_finish_dynamic_symbol (info->output_bfd,
- info, h, NULL);
+ info, h, NULL);
}
/* Used to decide how to sort relocs in an optimal manner for the
elf_i386_finish_dynamic_sections (bfd *output_bfd,
struct bfd_link_info *info)
{
- struct elf_i386_link_hash_table *htab;
+ struct elf_x86_link_hash_table *htab;
bfd *dynobj;
asection *sdyn;
const struct elf_i386_backend_data *abed;
- htab = elf_i386_hash_table (info);
+ htab = elf_x86_hash_table (info, I386_ELF_DATA);
if (htab == NULL)
return FALSE;
switch (dyn.d_tag)
{
default:
- if (abed->is_vxworks
+ if (abed->os == is_vxworks
&& elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
break;
continue;
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
}
- /* Fill in the first entry in the procedure linkage table. */
if (htab->elf.splt && htab->elf.splt->size > 0)
{
- if (bfd_link_pic (info))
- {
- memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry,
- abed->plt->plt0_entry_size);
- memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
- abed->plt0_pad_byte,
- abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
- }
- else
- {
- memcpy (htab->elf.splt->contents, abed->plt->plt0_entry,
- abed->plt->plt0_entry_size);
- memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
- abed->plt0_pad_byte,
- abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
- bfd_put_32 (output_bfd,
- (htab->elf.sgotplt->output_section->vma
- + htab->elf.sgotplt->output_offset
- + 4),
- htab->elf.splt->contents
- + abed->plt->plt0_got1_offset);
- bfd_put_32 (output_bfd,
- (htab->elf.sgotplt->output_section->vma
- + htab->elf.sgotplt->output_offset
- + 8),
- htab->elf.splt->contents
- + abed->plt->plt0_got2_offset);
-
- if (abed->is_vxworks)
- {
- Elf_Internal_Rela rel;
-
- /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
- On IA32 we use REL relocations so the addend goes in
- the PLT directly. */
- rel.r_offset = (htab->elf.splt->output_section->vma
- + htab->elf.splt->output_offset
- + abed->plt->plt0_got1_offset);
- rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
- bfd_elf32_swap_reloc_out (output_bfd, &rel,
- htab->srelplt2->contents);
- /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
- rel.r_offset = (htab->elf.splt->output_section->vma
- + htab->elf.splt->output_offset
- + abed->plt->plt0_got2_offset);
- rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
- bfd_elf32_swap_reloc_out (output_bfd, &rel,
- htab->srelplt2->contents +
- sizeof (Elf32_External_Rel));
- }
- }
-
/* UnixWare sets the entsize of .plt to 4, although that doesn't
really seem like the right value. */
elf_section_data (htab->elf.splt->output_section)
->this_hdr.sh_entsize = 4;
- /* Correct the .rel.plt.unloaded relocations. */
- if (abed->is_vxworks && !bfd_link_pic (info))
+ if (htab->plt.has_plt0)
{
- int num_plts = (htab->elf.splt->size
- / abed->plt->plt_entry_size) - 1;
- unsigned char *p;
+ /* Fill in the special first entry in the procedure linkage
+ table. */
+ memcpy (htab->elf.splt->contents, htab->plt.plt0_entry,
+ htab->lazy_plt->plt0_entry_size);
+ memset (htab->elf.splt->contents + htab->lazy_plt->plt0_entry_size,
+ abed->plt0_pad_byte,
+ htab->plt.plt_entry_size - htab->lazy_plt->plt0_entry_size);
+ if (!bfd_link_pic (info))
+ {
+ bfd_put_32 (output_bfd,
+ (htab->elf.sgotplt->output_section->vma
+ + htab->elf.sgotplt->output_offset
+ + 4),
+ htab->elf.splt->contents
+ + htab->lazy_plt->plt0_got1_offset);
+ bfd_put_32 (output_bfd,
+ (htab->elf.sgotplt->output_section->vma
+ + htab->elf.sgotplt->output_offset
+ + 8),
+ htab->elf.splt->contents
+ + htab->lazy_plt->plt0_got2_offset);
- p = htab->srelplt2->contents;
- if (bfd_link_pic (info))
- p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
- else
- p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
+ if (abed->os == is_vxworks)
+ {
+ Elf_Internal_Rela rel;
+ int num_plts = (htab->elf.splt->size
+ / htab->plt.plt_entry_size) - 1;
+ unsigned char *p;
+ asection *srelplt2 = htab->srelplt2;
+
+ /* Generate a relocation for _GLOBAL_OFFSET_TABLE_
+ + 4. On IA32 we use REL relocations so the
+ addend goes in the PLT directly. */
+ rel.r_offset = (htab->elf.splt->output_section->vma
+ + htab->elf.splt->output_offset
+ + htab->lazy_plt->plt0_got1_offset);
+ rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
+ R_386_32);
+ bfd_elf32_swap_reloc_out (output_bfd, &rel,
+ srelplt2->contents);
+ /* Generate a relocation for _GLOBAL_OFFSET_TABLE_
+ + 8. */
+ rel.r_offset = (htab->elf.splt->output_section->vma
+ + htab->elf.splt->output_offset
+ + htab->lazy_plt->plt0_got2_offset);
+ rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
+ R_386_32);
+ bfd_elf32_swap_reloc_out (output_bfd, &rel,
+ srelplt2->contents +
+ sizeof (Elf32_External_Rel));
+ /* Correct the .rel.plt.unloaded relocations. */
+ p = srelplt2->contents;
+ if (bfd_link_pic (info))
+ p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
+ else
+ p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
- for (; num_plts; num_plts--)
- {
- Elf_Internal_Rela rel;
- bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
- rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
- bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
- p += sizeof (Elf32_External_Rel);
-
- bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
- rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
- bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
- p += sizeof (Elf32_External_Rel);
+ for (; num_plts; num_plts--)
+ {
+ bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
+ rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
+ R_386_32);
+ bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
+ p += sizeof (Elf32_External_Rel);
+
+ bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
+ rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
+ R_386_32);
+ bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
+ p += sizeof (Elf32_External_Rel);
+ }
+ }
}
}
}
+
+ if (htab->plt_got != NULL && htab->plt_got->size > 0)
+ elf_section_data (htab->plt_got->output_section)
+ ->this_hdr.sh_entsize = htab->non_lazy_plt->plt_entry_size;
+
+ if (htab->plt_second != NULL && htab->plt_second->size > 0)
+ elf_section_data (htab->plt_second->output_section)
+ ->this_hdr.sh_entsize = htab->non_lazy_plt->plt_entry_size;
}
- if (htab->elf.sgotplt)
+ /* Fill in the first three entries in the global offset table. */
+ if (htab->elf.sgotplt && htab->elf.sgotplt->size > 0)
{
if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
{
return FALSE;
}
- /* Fill in the first three entries in the global offset table. */
- if (htab->elf.sgotplt->size > 0)
- {
- bfd_put_32 (output_bfd,
- (sdyn == NULL ? 0
- : sdyn->output_section->vma + sdyn->output_offset),
- htab->elf.sgotplt->contents);
- bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
- bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
- }
+ bfd_put_32 (output_bfd,
+ (sdyn == NULL ? 0
+ : sdyn->output_section->vma + sdyn->output_offset),
+ htab->elf.sgotplt->contents);
+ bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
+ bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
}
}
}
+ /* Adjust .eh_frame for the second PLT section. */
+ if (htab->plt_second_eh_frame != NULL
+ && htab->plt_second_eh_frame->contents != NULL)
+ {
+ if (htab->plt_second != NULL
+ && htab->plt_second->size != 0
+ && (htab->plt_second->flags & SEC_EXCLUDE) == 0
+ && htab->plt_second->output_section != NULL
+ && htab->plt_second_eh_frame->output_section != NULL)
+ {
+ bfd_vma plt_start = htab->plt_second->output_section->vma;
+ bfd_vma eh_frame_start
+ = (htab->plt_second_eh_frame->output_section->vma
+ + htab->plt_second_eh_frame->output_offset
+ + PLT_FDE_START_OFFSET);
+ bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
+ htab->plt_second_eh_frame->contents
+ + PLT_FDE_START_OFFSET);
+ }
+ if (htab->plt_second_eh_frame->sec_info_type
+ == SEC_INFO_TYPE_EH_FRAME)
+ {
+ if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
+ htab->plt_second_eh_frame,
+ htab->plt_second_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 = 4;
asection *,
struct elf_link_hash_entry *) ATTRIBUTE_UNUSED)
{
- struct elf_i386_link_hash_table *htab = elf_i386_hash_table (info);
+ struct elf_x86_link_hash_table *htab
+ = elf_x86_hash_table (info, I386_ELF_DATA);
if (htab == NULL)
return FALSE;
return TRUE;
}
-/* Return an array of PLT entry symbol values. */
+/* Forward declaration. */
+static const struct elf_x86_lazy_plt_layout elf_i386_nacl_plt;
-static bfd_vma *
-elf_i386_get_plt_sym_val (bfd *abfd, asymbol **dynsyms, asection *plt,
- asection *relplt)
+/* Similar to _bfd_elf_get_synthetic_symtab. Support PLTs with all
+ dynamic relocations. */
+
+static long
+elf_i386_get_synthetic_symtab (bfd *abfd,
+ long symcount ATTRIBUTE_UNUSED,
+ asymbol **syms ATTRIBUTE_UNUSED,
+ long dynsymcount,
+ asymbol **dynsyms,
+ asymbol **ret)
{
- bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
- arelent *p;
- long count, i;
- bfd_vma *plt_sym_val;
- bfd_vma plt_offset;
+ long count, i, n;
+ int j;
bfd_byte *plt_contents;
- const struct elf_i386_backend_data *bed
- = get_elf_i386_backend_data (abfd);
- Elf_Internal_Shdr *hdr;
-
- /* Get the .plt section contents. */
- plt_contents = (bfd_byte *) bfd_malloc (plt->size);
- if (plt_contents == NULL)
- return NULL;
- if (!bfd_get_section_contents (abfd, (asection *) plt,
- plt_contents, 0, plt->size))
+ long relsize;
+ const struct elf_x86_lazy_plt_layout *lazy_plt;
+ const struct elf_x86_non_lazy_plt_layout *non_lazy_plt;
+ const struct elf_x86_lazy_plt_layout *lazy_ibt_plt;
+ const struct elf_x86_non_lazy_plt_layout *non_lazy_ibt_plt;
+ asection *plt;
+ bfd_vma got_addr;
+ enum elf_x86_plt_type plt_type;
+ struct elf_x86_plt plts[] =
{
-bad_return:
- free (plt_contents);
- return NULL;
- }
+ { ".plt", NULL, NULL, plt_unknown, 0, 0, 0, 0 },
+ { ".plt.got", NULL, NULL, plt_non_lazy, 0, 0, 0, 0 },
+ { ".plt.sec", NULL, NULL, plt_second, 0, 0, 0, 0 },
+ { NULL, NULL, NULL, plt_non_lazy, 0, 0, 0, 0 }
+ };
- slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
- if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
- goto bad_return;
+ *ret = NULL;
- hdr = &elf_section_data (relplt)->this_hdr;
- count = relplt->size / hdr->sh_entsize;
+ if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
+ return 0;
- plt_sym_val = (bfd_vma *) bfd_malloc (sizeof (bfd_vma) * count);
- if (plt_sym_val == NULL)
- goto bad_return;
+ if (dynsymcount <= 0)
+ return 0;
- for (i = 0; i < count; i++)
- plt_sym_val[i] = -1;
+ relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
+ if (relsize <= 0)
+ return -1;
- plt_offset = bed->plt->plt_entry_size;
- p = relplt->relocation;
- for (i = 0; i < count; i++, p++)
+ non_lazy_plt = NULL;
+ /* Silence GCC 6. */
+ lazy_plt = NULL;
+ non_lazy_ibt_plt = NULL;
+ lazy_ibt_plt = NULL;
+ switch (get_elf_i386_backend_data (abfd)->os)
{
- long reloc_index;
+ case is_normal:
+ non_lazy_plt = &elf_i386_non_lazy_plt;
+ lazy_ibt_plt = &elf_i386_lazy_ibt_plt;
+ non_lazy_ibt_plt = &elf_i386_non_lazy_ibt_plt;
+ /* Fall through */
+ case is_vxworks:
+ lazy_plt = &elf_i386_lazy_plt;
+ break;
+ case is_nacl:
+ lazy_plt = &elf_i386_nacl_plt;
+ break;
+ }
- /* Skip unknown relocation. PR 17512: file: bc9d6cf5. */
- if (p->howto == NULL)
- continue;
+ got_addr = 0;
- if (p->howto->type != R_386_JUMP_SLOT
- && p->howto->type != R_386_IRELATIVE)
+ count = 0;
+ for (j = 0; plts[j].name != NULL; j++)
+ {
+ plt = bfd_get_section_by_name (abfd, plts[j].name);
+ if (plt == NULL || plt->size == 0)
continue;
- reloc_index = H_GET_32 (abfd, (plt_contents + plt_offset
- + bed->plt->plt_reloc_offset));
- reloc_index /= sizeof (Elf32_External_Rel);
- if (reloc_index < count)
- plt_sym_val[reloc_index] = plt->vma + plt_offset;
-
- plt_offset += bed->plt->plt_entry_size;
-
- /* PR binutils/18437: Skip extra relocations in the .rel.plt
- section. */
- if (plt_offset >= plt->size)
+ /* Get the PLT section contents. */
+ plt_contents = (bfd_byte *) bfd_malloc (plt->size);
+ if (plt_contents == NULL)
break;
- }
-
- free (plt_contents);
-
- return plt_sym_val;
-}
-
-/* Similar to _bfd_elf_get_synthetic_symtab. */
+ if (!bfd_get_section_contents (abfd, (asection *) plt,
+ plt_contents, 0, plt->size))
+ {
+ free (plt_contents);
+ break;
+ }
-static long
-elf_i386_get_synthetic_symtab (bfd *abfd,
- long symcount,
- asymbol **syms,
- long dynsymcount,
- asymbol **dynsyms,
- asymbol **ret)
-{
- asection *plt = bfd_get_section_by_name (abfd, ".plt");
- return _bfd_elf_ifunc_get_synthetic_symtab (abfd, symcount, syms,
- dynsymcount, dynsyms, ret,
- plt,
- elf_i386_get_plt_sym_val);
-}
+ /* Check what kind of PLT it is. */
+ plt_type = plt_unknown;
+ if (plts[j].type == plt_unknown
+ && (plt->size >= (lazy_plt->plt0_entry_size
+ + lazy_plt->plt_entry_size)))
+ {
+ /* Match lazy PLT first. */
+ if (memcmp (plt_contents, lazy_plt->plt0_entry,
+ lazy_plt->plt0_got1_offset) == 0)
+ {
+ /* The fist entry in the lazy IBT PLT is the same as the
+ normal lazy PLT. */
+ if (lazy_ibt_plt != NULL
+ && (memcmp (plt_contents + lazy_ibt_plt->plt0_entry_size,
+ lazy_ibt_plt->plt_entry,
+ lazy_ibt_plt->plt_got_offset) == 0))
+ plt_type = plt_lazy | plt_second;
+ else
+ plt_type = plt_lazy;
+ }
+ else if (memcmp (plt_contents, lazy_plt->pic_plt0_entry,
+ lazy_plt->plt0_got1_offset) == 0)
+ {
+ /* The fist entry in the PIC lazy IBT PLT is the same as
+ the normal PIC lazy PLT. */
+ if (lazy_ibt_plt != NULL
+ && (memcmp (plt_contents + lazy_ibt_plt->plt0_entry_size,
+ lazy_ibt_plt->pic_plt_entry,
+ lazy_ibt_plt->plt_got_offset) == 0))
+ plt_type = plt_lazy | plt_pic | plt_second;
+ else
+ plt_type = plt_lazy | plt_pic;
+ }
+ }
-/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
+ if (non_lazy_plt != NULL
+ && (plt_type == plt_unknown || plt_type == plt_non_lazy)
+ && plt->size >= non_lazy_plt->plt_entry_size)
+ {
+ /* Match non-lazy PLT. */
+ if (memcmp (plt_contents, non_lazy_plt->plt_entry,
+ non_lazy_plt->plt_got_offset) == 0)
+ plt_type = plt_non_lazy;
+ else if (memcmp (plt_contents, non_lazy_plt->pic_plt_entry,
+ non_lazy_plt->plt_got_offset) == 0)
+ plt_type = plt_pic;
+ }
-static bfd_boolean
-elf_i386_hash_symbol (struct elf_link_hash_entry *h)
-{
- if (h->plt.offset != (bfd_vma) -1
- && !h->def_regular
- && !h->pointer_equality_needed)
- return FALSE;
+ if ((non_lazy_ibt_plt != NULL)
+ && (plt_type == plt_unknown || plt_type == plt_second)
+ && plt->size >= non_lazy_ibt_plt->plt_entry_size)
+ {
+ if (memcmp (plt_contents,
+ non_lazy_ibt_plt->plt_entry,
+ non_lazy_ibt_plt->plt_got_offset) == 0)
+ {
+ /* Match IBT PLT. */
+ plt_type = plt_second;
+ non_lazy_plt = non_lazy_ibt_plt;
+ }
+ else if (memcmp (plt_contents,
+ non_lazy_ibt_plt->pic_plt_entry,
+ non_lazy_ibt_plt->plt_got_offset) == 0)
+ {
+ /* Match PIC IBT PLT. */
+ plt_type = plt_second | plt_pic;
+ non_lazy_plt = non_lazy_ibt_plt;
+ }
+ }
- return _bfd_elf_hash_symbol (h);
-}
+ if (plt_type == plt_unknown)
+ {
+ free (plt_contents);
+ continue;
+ }
-/* Parse i386 GNU properties. */
+ plts[j].sec = plt;
+ plts[j].type = plt_type;
-static enum elf_property_kind
-elf_i386_parse_gnu_properties (bfd *abfd, unsigned int type,
- bfd_byte *ptr, unsigned int datasz)
-{
- elf_property *prop;
+ if ((plt_type & plt_lazy))
+ {
+ plts[j].plt_got_offset = lazy_plt->plt_got_offset;
+ plts[j].plt_entry_size = lazy_plt->plt_entry_size;
+ /* Skip PLT0 in lazy PLT. */
+ i = 1;
+ }
+ else
+ {
+ plts[j].plt_got_offset = non_lazy_plt->plt_got_offset;
+ plts[j].plt_entry_size = non_lazy_plt->plt_entry_size;
+ i = 0;
+ }
- switch (type)
- {
- case GNU_PROPERTY_X86_ISA_1_USED:
- case GNU_PROPERTY_X86_ISA_1_NEEDED:
- if (datasz != 4)
+ /* Skip lazy PLT when the second PLT is used. */
+ if ((plt_type & (plt_lazy | plt_second))
+ == (plt_lazy | plt_second))
+ plts[j].count = 0;
+ else
{
- _bfd_error_handler
- ((type == GNU_PROPERTY_X86_ISA_1_USED
- ? _("error: %B: <corrupt x86 ISA used size: 0x%x>")
- : _("error: %B: <corrupt x86 ISA needed size: 0x%x>")),
- abfd, datasz);
- return property_corrupt;
+ n = plt->size / plts[j].plt_entry_size;
+ plts[j].count = n;
+ count += n - i;
}
- prop = _bfd_elf_get_property (abfd, type, datasz);
- prop->u.number = bfd_h_get_32 (abfd, ptr);
- prop->pr_kind = property_number;
- break;
- default:
- return property_ignored;
+ plts[j].contents = plt_contents;
+
+ /* The _GLOBAL_OFFSET_TABLE_ address is needed. */
+ if ((plt_type & plt_pic))
+ got_addr = (bfd_vma) -1;
}
- return property_number;
+ return _bfd_x86_elf_get_synthetic_symtab (abfd, count, relsize,
+ got_addr, plts, dynsyms,
+ ret);
}
-/* Merge i386 GNU property BPROP with APROP. If APROP isn't NULL,
- return TRUE if APROP is updated. Otherwise, return TRUE if BPROP
- should be merged with ABFD. */
+/* Set up i386 GNU properties. Return the first relocatable ELF input
+ with GNU properties if found. Otherwise, return NULL. */
-static bfd_boolean
-elf_i386_merge_gnu_properties (bfd *abfd ATTRIBUTE_UNUSED,
- elf_property *aprop,
- elf_property *bprop)
+static bfd *
+elf_i386_link_setup_gnu_properties (struct bfd_link_info *info)
{
- unsigned int number;
- bfd_boolean updated = FALSE;
- unsigned int pr_type = aprop != NULL ? aprop->pr_type : bprop->pr_type;
+ struct elf_x86_plt_layout_table plt_layout;
- switch (pr_type)
+ plt_layout.normal_target = FALSE;
+ plt_layout.is_vxworks = FALSE;
+ switch (get_elf_i386_backend_data (info->output_bfd)->os)
{
- case GNU_PROPERTY_X86_ISA_1_USED:
- case GNU_PROPERTY_X86_ISA_1_NEEDED:
- if (aprop != NULL && bprop != NULL)
- {
- number = aprop->u.number;
- aprop->u.number = number | bprop->u.number;
- updated = number != (unsigned int) aprop->u.number;
- }
- else
- {
- /* Return TRUE if APROP is NULL to indicate that BPROP should
- be added to ABFD. */
- updated = aprop == NULL;
- }
+ case is_normal:
+ plt_layout.lazy_plt = &elf_i386_lazy_plt;
+ plt_layout.non_lazy_plt = &elf_i386_non_lazy_plt;
+ plt_layout.lazy_ibt_plt = &elf_i386_lazy_ibt_plt;
+ plt_layout.non_lazy_ibt_plt = &elf_i386_non_lazy_ibt_plt;
+ plt_layout.normal_target = TRUE;
+ break;
+ case is_vxworks:
+ plt_layout.lazy_plt = &elf_i386_lazy_plt;
+ plt_layout.non_lazy_plt = NULL;
+ plt_layout.lazy_ibt_plt = NULL;
+ plt_layout.non_lazy_ibt_plt = NULL;
+ plt_layout.is_vxworks = TRUE;
+ break;
+ case is_nacl:
+ plt_layout.lazy_plt = &elf_i386_nacl_plt;
+ plt_layout.non_lazy_plt = NULL;
+ plt_layout.lazy_ibt_plt = NULL;
+ plt_layout.non_lazy_ibt_plt = NULL;
break;
-
- default:
- /* Never should happen. */
- abort ();
}
- return updated;
+ return _bfd_x86_elf_link_setup_gnu_properties (info, &plt_layout);
}
#define TARGET_LITTLE_SYM i386_elf32_vec
#define bfd_elf32_mkobject elf_i386_mkobject
#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
-#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
#define bfd_elf32_get_synthetic_symtab elf_i386_get_synthetic_symtab
#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
#define elf_backend_check_relocs elf_i386_check_relocs
-#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
-#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
+#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
#define elf_backend_fake_sections elf_i386_fake_sections
#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
#define elf_backend_reloc_type_class elf_i386_reloc_type_class
#define elf_backend_relocate_section elf_i386_relocate_section
#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
-#define elf_backend_always_size_sections elf_i386_always_size_sections
-#define elf_backend_omit_section_dynsym \
- ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
-#define elf_backend_hash_symbol elf_i386_hash_symbol
-#define elf_backend_fixup_symbol elf_i386_fixup_symbol
-#define elf_backend_parse_gnu_properties elf_i386_parse_gnu_properties
-#define elf_backend_merge_gnu_properties elf_i386_merge_gnu_properties
+#define elf_backend_setup_gnu_properties elf_i386_link_setup_gnu_properties
#include "elf32-target.h"
DW_CFA_nop, DW_CFA_nop
};
-static const struct elf_i386_plt_layout elf_i386_nacl_plt =
+static const struct elf_x86_lazy_plt_layout elf_i386_nacl_plt =
{
elf_i386_nacl_plt0_entry, /* plt0_entry */
sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
- 2, /* plt0_got1_offset */
- 8, /* plt0_got2_offset */
elf_i386_nacl_plt_entry, /* plt_entry */
NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
+ 2, /* plt0_got1_offset */
+ 8, /* plt0_got2_offset */
+ 0, /* plt0_got2_insn_end */
2, /* plt_got_offset */
33, /* plt_reloc_offset */
38, /* plt_plt_offset */
+ 0, /* plt_got_insn_size */
+ 0, /* plt_plt_insn_end */
32, /* plt_lazy_offset */
elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
- sizeof (elf_i386_nacl_eh_frame_plt),/* eh_frame_plt_size */
- NULL, /* eh_frame_plt_got */
- 0, /* eh_frame_plt_got_size */
+ sizeof (elf_i386_nacl_eh_frame_plt) /* eh_frame_plt_size */
};
static const struct elf_i386_backend_data elf_i386_nacl_arch_bed =
{
- &elf_i386_nacl_plt, /* plt */
- 0x90, /* plt0_pad_byte: nop insn */
- 0, /* is_vxworks */
+ 0x90, /* plt0_pad_byte: nop insn */
+ is_nacl /* os */
};
static bfd_boolean
static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed =
{
- &elf_i386_plt, /* plt */
0x90, /* plt0_pad_byte */
- 1, /* is_vxworks */
+ is_vxworks /* os */
};
#undef elf_backend_arch_data
projects / deliverable / binutils-gdb.git / blobdiff