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.
-   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.
@@ -18,9 +18,83 @@
    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)
@@ -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
-_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 *);
@@ -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
+
+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