gdb: add target_ops::supports_displaced_step

[deliverable/binutils-gdb.git] / bfd / elfxx-aarch64.h

diff --git a/bfd/elfxx-aarch64.h b/bfd/elfxx-aarch64.h
index 301af73e3ecf2800d0dd8a3558ad35f03867f6d7..9d390da9c03e8618880f79c1fbaee07f35260c0b 100644 (file)
--- a/bfd/elfxx-aarch64.h
+++ b/bfd/elfxx-aarch64.h
@@ -1,5 +1,5 @@
 /* AArch64-specific backend routines.
 /* AArch64-specific backend routines.

-   Copyright (C) 2009-2018 Free Software Foundation, Inc.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.

    Contributed by ARM Ltd.
 
    This file is part of BFD, the Binary File Descriptor library.
    Contributed by ARM Ltd.
 
    This file is part of BFD, the Binary File Descriptor library.


@@ -18,9 +18,83 @@
    along with this program; see the file COPYING3. If not,
    see <http://www.gnu.org/licenses/>.  */
 
    along with this program; see the file COPYING3. If not,
    see <http://www.gnu.org/licenses/>.  */
 

-#include "bfd.h"
-#include "elf-bfd.h"
-#include "stdint.h"
+extern void bfd_elf64_aarch64_init_maps
+  (bfd *);
+
+extern void bfd_elf32_aarch64_init_maps
+  (bfd *);
+
+/* Types of PLTs based on the level of security.  This would be a
+   bit-mask to denote which of the combinations of security features
+   are enabled:
+   - No security feature PLTs
+   - PLTs with BTI instruction
+   - PLTs with PAC instruction
+*/
+typedef enum
+{
+  PLT_NORMAL   = 0x0,  /* Normal plts.  */
+  PLT_BTI      = 0x1,  /* plts with bti.  */
+  PLT_PAC      = 0x2,  /* plts with pointer authentication.  */
+  PLT_BTI_PAC  = PLT_BTI | PLT_PAC
+} aarch64_plt_type;
+
+/* To indicate if BTI is enabled with/without warning.  */
+typedef enum
+{
+  BTI_NONE     = 0,  /* BTI is not enabled.  */
+  BTI_WARN     = 1,  /* BTI is enabled with -z force-bti.  */
+} aarch64_enable_bti_type;
+
+/* A structure to encompass all information coming from BTI or PAC
+   related command line options.  This involves the "PLT_TYPE" to determine
+   which version of PLTs to pick and "BTI_TYPE" to determine if
+   BTI should be turned on with any warnings.   */
+typedef struct
+{
+  aarch64_plt_type plt_type;
+  aarch64_enable_bti_type bti_type;
+} aarch64_bti_pac_info;
+
+/* An enum to define what kind of erratum fixes we should apply.  This gives the
+   user a bit more control over the sequences we generate.  */
+typedef enum
+{
+  ERRAT_NONE  = (1 << 0),  /* No erratum workarounds allowed.  */
+  ERRAT_ADR   = (1 << 1),  /* Erratum workarounds using ADR allowed.  */
+  ERRAT_ADRP  = (1 << 2),  /* Erratum workarounds using ADRP are allowed.  */
+} erratum_84319_opts;
+
+extern void bfd_elf64_aarch64_set_options
+  (bfd *, struct bfd_link_info *, int, int, int, int, erratum_84319_opts, int,
+   aarch64_bti_pac_info);
+
+extern void bfd_elf32_aarch64_set_options
+  (bfd *, struct bfd_link_info *, int, int, int, int, erratum_84319_opts, int,
+   aarch64_bti_pac_info);
+
+/* AArch64 stub generation support for ELF64.  Called from the linker.  */
+extern int elf64_aarch64_setup_section_lists
+  (bfd *, struct bfd_link_info *);
+extern void elf64_aarch64_next_input_section
+  (struct bfd_link_info *, struct bfd_section *);
+extern bfd_boolean elf64_aarch64_size_stubs
+  (bfd *, bfd *, struct bfd_link_info *, bfd_signed_vma,
+   struct bfd_section * (*) (const char *, struct bfd_section *),
+   void (*) (void));
+extern bfd_boolean elf64_aarch64_build_stubs
+  (struct bfd_link_info *);
+/* AArch64 stub generation support for ELF32.  Called from the linker.  */
+extern int elf32_aarch64_setup_section_lists
+  (bfd *, struct bfd_link_info *);
+extern void elf32_aarch64_next_input_section
+  (struct bfd_link_info *, struct bfd_section *);
+extern bfd_boolean elf32_aarch64_size_stubs
+  (bfd *, bfd *, struct bfd_link_info *, bfd_signed_vma,
+   struct bfd_section * (*) (const char *, struct bfd_section *),
+   void (*) (void));
+extern bfd_boolean elf32_aarch64_build_stubs
+  (struct bfd_link_info *);

 
 /* Take the PAGE component of an address or offset.  */
 #define PG(x)       ((x) & ~ (bfd_vma) 0xfff)
 
 /* Take the PAGE component of an address or offset.  */
 #define PG(x)       ((x) & ~ (bfd_vma) 0xfff)


@@ -44,8 +118,8 @@ _bfd_aarch64_elf_put_addend (bfd *, bfd_byte *, bfd_reloc_code_real_type,
                             reloc_howto_type *, bfd_signed_vma);
 
 extern bfd_vma
                             reloc_howto_type *, bfd_signed_vma);
 
 extern bfd_vma

-_bfd_aarch64_elf_resolve_relocation (bfd_reloc_code_real_type, bfd_vma, bfd_vma,
-                                    bfd_vma, bfd_boolean);
+_bfd_aarch64_elf_resolve_relocation (bfd *, bfd_reloc_code_real_type, bfd_vma,
+                                    bfd_vma, bfd_vma, bfd_boolean);

 
 extern bfd_boolean
 _bfd_aarch64_elf_grok_prstatus (bfd *, Elf_Internal_Note *);
 
 extern bfd_boolean
 _bfd_aarch64_elf_grok_prstatus (bfd *, Elf_Internal_Note *);


@@ -59,3 +133,26 @@ _bfd_aarch64_elf_write_core_note (bfd *, char *, int *, int, ...);
 #define elf_backend_grok_prstatus      _bfd_aarch64_elf_grok_prstatus
 #define elf_backend_grok_psinfo                _bfd_aarch64_elf_grok_psinfo
 #define elf_backend_write_core_note    _bfd_aarch64_elf_write_core_note
 #define elf_backend_grok_prstatus      _bfd_aarch64_elf_grok_prstatus
 #define elf_backend_grok_psinfo                _bfd_aarch64_elf_grok_psinfo
 #define elf_backend_write_core_note    _bfd_aarch64_elf_write_core_note

+
+extern bfd *
+_bfd_aarch64_elf_link_setup_gnu_properties (struct bfd_link_info *,
+                                           uint32_t *);
+
+extern enum elf_property_kind
+_bfd_aarch64_elf_parse_gnu_properties (bfd *, unsigned int,
+                                      bfd_byte *, unsigned int);
+
+extern bfd_boolean
+_bfd_aarch64_elf_merge_gnu_properties (struct bfd_link_info *, bfd *,
+                                      elf_property *, elf_property *,
+                                      uint32_t);
+
+extern void
+_bfd_aarch64_elf_link_fixup_gnu_properties (struct bfd_link_info *,
+                                           elf_property_list **);
+
+#define elf_backend_parse_gnu_properties       \
+  _bfd_aarch64_elf_parse_gnu_properties
+
+#define elf_backend_fixup_gnu_properties       \
+  _bfd_aarch64_elf_link_fixup_gnu_properties