Guard against 'current_directory == NULL' on gdb_abspath (PR gdb/23613)

[deliverable/binutils-gdb.git] / bfd / elfxx-x86.h

diff --git a/bfd/elfxx-x86.h b/bfd/elfxx-x86.h
index f84fe01630bf7c50f3e182bde658cc2542acd9db..57d6d6e4087b39ecb0bcac8ba73d5dd0c2eac7f8 100644 (file)
--- a/bfd/elfxx-x86.h
+++ b/bfd/elfxx-x86.h
@@ -1,5 +1,5 @@
 /* x86 specific support for ELF
-   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   Copyright (C) 2017-2019 Free Software Foundation, Inc.
 
    This file is part of BFD, the Binary File Descriptor library.
 
@@ -23,8 +23,8 @@
 #include "bfdlink.h"
 #include "libbfd.h"
 #include "elf-bfd.h"
-#include "bfd_stdint.h"
 #include "hashtab.h"
+#include "elf-linker-x86.h"
 
 #define PLT_CIE_LENGTH         20
 #define PLT_FDE_LENGTH         36
@@ -162,6 +162,14 @@
        || (ELF_ST_VISIBILITY ((H)->other) \
           && (H)->root.type == bfd_link_hash_undefweak))
 
+/* TRUE if this symbol isn't defined by a shared object.  */
+#define SYMBOL_DEFINED_NON_SHARED_P(H) \
+  ((H)->def_regular \
+   || (H)->root.linker_def \
+   || (H)->root.ldscript_def \
+   || ((struct elf_x86_link_hash_entry *) (H))->linker_def \
+   || ELF_COMMON_DEF_P (H))
+
 /* TRUE if relative relocation should be generated.  GOT reference to
    global symbol in PIC will lead to dynamic symbol.  It becomes a
    problem when "time" or "times" is defined as a variable in an
@@ -285,16 +293,30 @@ struct elf_x86_link_hash_entry
 
 struct elf_x86_lazy_plt_layout
 {
-  /* The first entry in an absolute lazy procedure linkage table looks
-     like this.  */
+  /* The first entry in a 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.  */
+  /* Later entries in a lazy procedure linkage table look like this.  */
   const bfd_byte *plt_entry;
   unsigned int plt_entry_size;         /* Size of each PLT entry.  */
 
+  /* The TLSDESC entry in a lazy procedure linkage table looks like
+     this.  This is for x86-64 only.  */
+  const bfd_byte *plt_tlsdesc_entry;
+  unsigned int plt_tlsdesc_entry_size;  /* Size of TLSDESC entry.  */
+
+  /* Offsets into the TLSDESC entry that are to be replaced with
+     GOT+8 and GOT+TDG.  These are for x86-64 only.  */
+  unsigned int plt_tlsdesc_got1_offset;
+  unsigned int plt_tlsdesc_got2_offset;
+
+  /* Offset of the end of the PC-relative instructions containing
+     plt_tlsdesc_got1_offset and plt_tlsdesc_got2_offset.  These
+     are for x86-64 only.  */
+  unsigned int plt_tlsdesc_got1_insn_end;
+  unsigned int plt_tlsdesc_got2_insn_end;
+
   /* Offsets into plt0_entry that are to be replaced with GOT[1] and
      GOT[2].  */
   unsigned int plt0_got1_offset;
@@ -336,10 +358,11 @@ struct elf_x86_lazy_plt_layout
 
 struct elf_x86_non_lazy_plt_layout
 {
-  /* Entries in an absolute non-lazy procedure linkage table look like
-     this.  */
+  /* Entries in a 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.  */
+  /* Entries in a PIC non-lazy procedure linkage table look like this.
+     This is only used for i386 where absolute PLT and PIC PLT are
+     different.  */
   const bfd_byte *pic_plt_entry;
 
   unsigned int plt_entry_size;         /* Size of each PLT entry.  */
@@ -358,9 +381,7 @@ struct elf_x86_non_lazy_plt_layout
 
 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.  */
+  /* The first entry in a lazy procedure linkage table looks like this.  */
   const bfd_byte *plt0_entry;
   /* Entries in a procedure linkage table look like this.  */
   const bfd_byte *plt_entry;
@@ -376,6 +397,9 @@ struct elf_x86_plt_layout
      This is only used for x86-64.  */
   unsigned int plt_got_insn_size;
 
+  /* Alignment of the .iplt section.  */
+  unsigned int iplt_alignment;
+
   /* .eh_frame covering the .plt section.  */
   const bfd_byte *eh_frame_plt;
   unsigned int eh_frame_plt_size;
@@ -508,6 +532,9 @@ struct elf_x86_link_hash_table
   int dynamic_interpreter_size;
   const char *dynamic_interpreter;
   const char *tls_get_addr;
+
+  /* Options passed from the linker.  */
+  struct elf_linker_x86_params *params;
 };
 
 /* Architecture-specific backend data for x86.  */
@@ -669,11 +696,18 @@ 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 *);
+  (struct bfd_link_info *, bfd *, bfd *, elf_property *, elf_property *);
+
+extern void _bfd_x86_elf_link_fixup_gnu_properties
+  (struct bfd_link_info *, elf_property_list **);
 
 extern bfd * _bfd_x86_elf_link_setup_gnu_properties
   (struct bfd_link_info *, struct elf_x86_init_table *);
 
+extern void _bfd_x86_elf_link_fixup_ifunc_symbol
+  (struct bfd_link_info *, struct elf_x86_link_hash_table *,
+   struct elf_link_hash_entry *, Elf_Internal_Sym *sym);
+
 #define bfd_elf64_mkobject \
   _bfd_x86_elf_mkobject
 #define bfd_elf32_mkobject \
@@ -704,8 +738,10 @@ extern bfd * _bfd_x86_elf_link_setup_gnu_properties
 #define elf_backend_gc_mark_hook \
   _bfd_x86_elf_gc_mark_hook
 #define elf_backend_omit_section_dynsym \
-  ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true_any)
+  _bfd_elf_omit_section_dynsym_all
 #define elf_backend_parse_gnu_properties \
   _bfd_x86_elf_parse_gnu_properties
 #define elf_backend_merge_gnu_properties \
   _bfd_x86_elf_merge_gnu_properties
+#define elf_backend_fixup_gnu_properties \
+  _bfd_x86_elf_link_fixup_gnu_properties