[AArch64] MTE corefile support

bfd	* elf.c (elfcore_make_memtag_note_section): New function.
	(elfcore_grok_note): Handle NT_MEMTAG note types.

binutils* readelf.c (get_note_type): Handle NT_MEMTAG note types.

include	* elf/common.h (NT_MEMTAG): New constant.
	(NT_MEMTAG_TYPE_AARCH_MTE): New constant.

1 files changed, 19 insertions, 0 deletions

diff --git a/bfd/elf.c b/bfd/elf.c
index 8ed1623..a4cfaf1 100644
--- a/bfd/elf.c
+++ b/bfd/elf.c
@@ -9597,6 +9597,23 @@ elfcore_make_auxv_note_section (bfd *abfd, Elf_Internal_Note *note,
   return true;
 }
 
+static bool
+elfcore_make_memtag_note_section (bfd *abfd, Elf_Internal_Note *note,
+				  size_t offs)
+{
+  asection *sect = bfd_make_section_anyway_with_flags (abfd, ".memtag",
+						       SEC_HAS_CONTENTS);
+
+  if (sect == NULL)
+    return false;
+
+  sect->size = note->descsz - offs;
+  sect->filepos = note->descpos + offs;
+  sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32;
+
+  return true;
+}
+
 /* prstatus_t exists on:
      solaris 2.5+
      linux 2.[01] + glibc
@@ -10657,6 +10674,8 @@ elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note)
       return elfcore_make_note_pseudosection (abfd, ".note.linuxcore.siginfo",
 					      note);
 
+    case NT_MEMTAG:
+      return elfcore_make_memtag_note_section (abfd, note, 0);
     }
 }