#include "libbfd.h"
#include "elf-bfd.h"
#include "bfd_stdint.h"
-#include "objalloc.h"
#include "hashtab.h"
+#define ABI_64_P(abfd) \
+ (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64)
+
/* 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
bfd_vma tlsdesc_got;
};
+struct elf_x86_lazy_plt_layout
+{
+ /* The first entry in an absolute lazy procedure linkage table looks
+ like this. */
+ const bfd_byte *plt0_entry;
+ unsigned int plt0_entry_size; /* Size of PLT0 entry. */
+
+ /* Later entries in an absolute lazy procedure linkage table look
+ like this. */
+ const bfd_byte *plt_entry;
+ unsigned int plt_entry_size; /* Size of each PLT entry. */
+
+ /* Offsets into plt0_entry that are to be replaced with GOT[1] and
+ GOT[2]. */
+ unsigned int plt0_got1_offset;
+ unsigned int plt0_got2_offset;
+
+ /* Offset of the end of the PC-relative instruction containing
+ plt0_got2_offset. This is for x86-64 only. */
+ unsigned int plt0_got2_insn_end;
+
+ /* Offsets into plt_entry that are to be replaced with... */
+ unsigned int plt_got_offset; /* ... address of this symbol in .got. */
+ unsigned int plt_reloc_offset; /* ... offset into relocation table. */
+ unsigned int plt_plt_offset; /* ... offset to start of .plt. */
+
+ /* Length of the PC-relative instruction containing plt_got_offset.
+ This is used for x86-64 only. */
+ unsigned int plt_got_insn_size;
+
+ /* Offset of the end of the PC-relative jump to plt0_entry. This is
+ used for x86-64 only. */
+ unsigned int plt_plt_insn_end;
+
+ /* Offset into plt_entry where the initial value of the GOT entry
+ points. */
+ unsigned int plt_lazy_offset;
+
+ /* The first entry in a PIC lazy procedure linkage table looks like
+ this. */
+ const bfd_byte *pic_plt0_entry;
+
+ /* Subsequent entries in a PIC lazy procedure linkage table look
+ like this. */
+ const bfd_byte *pic_plt_entry;
+
+ /* .eh_frame covering the lazy .plt section. */
+ const bfd_byte *eh_frame_plt;
+ unsigned int eh_frame_plt_size;
+};
+
+struct elf_x86_non_lazy_plt_layout
+{
+ /* Entries in an absolute non-lazy procedure linkage table look like
+ this. */
+ const bfd_byte *plt_entry;
+ /* Entries in a PIC non-lazy procedure linkage table look like this. */
+ const bfd_byte *pic_plt_entry;
+
+ unsigned int plt_entry_size; /* Size of each PLT entry. */
+
+ /* Offsets into plt_entry that are to be replaced with... */
+ unsigned int plt_got_offset; /* ... address of this symbol in .got. */
+
+ /* Length of the PC-relative instruction containing plt_got_offset.
+ This is used for x86-64 only. */
+ unsigned int plt_got_insn_size;
+
+ /* .eh_frame covering the non-lazy .plt section. */
+ const bfd_byte *eh_frame_plt;
+ unsigned int eh_frame_plt_size;
+};
+
+struct elf_x86_plt_layout
+{
+ /* The first entry in a lazy procedure linkage table looks like this.
+ This is only used for i386 where absolute PLT0 and PIC PLT0 are
+ different. */
+ const bfd_byte *plt0_entry;
+ /* Entries in a procedure linkage table look like this. */
+ const bfd_byte *plt_entry;
+ unsigned int plt_entry_size; /* Size of each PLT entry. */
+
+ /* 1 has PLT0. */
+ unsigned int has_plt0;
+
+ /* Offsets into plt_entry that are to be replaced with... */
+ unsigned int plt_got_offset; /* ... address of this symbol in .got. */
+
+ /* Length of the PC-relative instruction containing plt_got_offset.
+ This is only used for x86-64. */
+ unsigned int plt_got_insn_size;
+
+ /* .eh_frame covering the .plt section. */
+ const bfd_byte *eh_frame_plt;
+ unsigned int eh_frame_plt_size;
+};
+
/* The first 3 values in tls_type of x86 ELF linker hash entry. */
#define GOT_UNKNOWN 0
#define GOT_NORMAL 1
asection *plt_got;
asection *plt_got_eh_frame;
+ /* Parameters describing PLT generation, lazy or non-lazy. */
+ struct elf_x86_plt_layout plt;
+
+ /* Parameters describing lazy PLT generation. */
+ const struct elf_x86_lazy_plt_layout *lazy_plt;
+
+ /* Parameters describing non-lazy PLT generation. */
+ const struct elf_x86_non_lazy_plt_layout *non_lazy_plt;
+
union
{
bfd_signed_vma refcount;
to read-only sections. */
bfd_boolean readonly_dynrelocs_against_ifunc;
+ /* The (unloaded but important) .rel.plt.unloaded section on VxWorks.
+ This is used for i386 only. */
+ asection *srelplt2;
+
+ /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. This
+ is used for i386 only. */
+ bfd_vma next_tls_desc_index;
+
bfd_vma (*r_info) (bfd_vma, bfd_vma);
bfd_vma (*r_sym) (bfd_vma);
unsigned int pointer_r_type;
const char *tls_get_addr;
};
+struct elf_x86_plt_layout_table
+{
+ /* The lazy PLT layout. */
+ const struct elf_x86_lazy_plt_layout *lazy_plt;
+
+ /* The non-lazy PLT layout. */
+ const struct elf_x86_non_lazy_plt_layout *non_lazy_plt;
+
+ /* The lazy PLT layout for IBT. */
+ const struct elf_x86_lazy_plt_layout *lazy_ibt_plt;
+
+ /* The non-lazy PLT layout for IBT. */
+ const struct elf_x86_non_lazy_plt_layout *non_lazy_ibt_plt;
+
+ /* TRUE if this is an normal x86 target. */
+ bfd_boolean normal_target;
+
+ /* TRUE if this is a VxWorks x86 target. */
+ bfd_boolean is_vxworks;
+};
+
struct elf_x86_obj_tdata
{
struct elf_obj_tdata root;
bfd_vma *local_tlsdesc_gotent;
};
+enum elf_x86_plt_type
+{
+ plt_non_lazy = 0,
+ plt_lazy = 1 << 0,
+ plt_pic = 1 << 1,
+ plt_second = 1 << 2,
+ plt_unknown = -1
+};
+
+struct elf_x86_plt
+{
+ const char *name;
+ asection *sec;
+ bfd_byte *contents;
+ enum elf_x86_plt_type type;
+ unsigned int plt_got_offset;
+ unsigned int plt_entry_size;
+ unsigned int plt_got_insn_size; /* Only used for x86-64. */
+ long count;
+};
+
#define elf_x86_tdata(abfd) \
((struct elf_x86_obj_tdata *) (abfd)->tdata.any)
#define elf_x86_local_tlsdesc_gotent(abfd) \
(elf_x86_tdata (abfd)->local_tlsdesc_gotent)
+extern bfd_boolean _bfd_x86_elf_mkobject
+ (bfd *);
+
extern void _bfd_x86_elf_set_tls_module_base
(struct bfd_link_info *);
extern struct bfd_hash_entry * _bfd_x86_elf_link_hash_newfunc
(struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
-extern void _bfd_x86_elf_link_hash_table_free
+extern struct bfd_link_hash_table * _bfd_x86_elf_link_hash_table_create
(bfd *);
extern int _bfd_x86_elf_compare_relocs
extern bfd_boolean _bfd_x86_elf_hash_symbol
(struct elf_link_hash_entry *);
+extern long _bfd_x86_elf_get_synthetic_symtab
+ (bfd *, long, long, bfd_vma, struct elf_x86_plt [], asymbol **,
+ asymbol **);
+
extern enum elf_property_kind _bfd_x86_elf_parse_gnu_properties
(bfd *, unsigned int, bfd_byte *, unsigned int);
extern bfd_boolean _bfd_x86_elf_merge_gnu_properties
(struct bfd_link_info *, bfd *, elf_property *, elf_property *);
+extern bfd * _bfd_x86_elf_link_setup_gnu_properties
+ (struct bfd_link_info *, struct elf_x86_plt_layout_table *);
+
+#define bfd_elf64_mkobject \
+ _bfd_x86_elf_mkobject
+#define bfd_elf32_mkobject \
+ _bfd_x86_elf_mkobject
+#define bfd_elf64_bfd_link_hash_table_create \
+ _bfd_x86_elf_link_hash_table_create
+#define bfd_elf32_bfd_link_hash_table_create \
+ _bfd_x86_elf_link_hash_table_create
#define bfd_elf64_bfd_link_check_relocs \
_bfd_x86_elf_link_check_relocs
#define bfd_elf32_bfd_link_check_relocs \
projects / binutils-gdb.git / blobdiff