aarch64/sme: Core file support

Add required code to support core file dumps with NT_ARM_ZA and NT_ARM_SSVE
register sets in them.

These new register sets are dumped when SME is supported.

diff --git a/bfd/elf-bfd.h b/bfd/elf-bfd.h
index 869e86b7749dc3063b1c7759ef30b2df35faeec5..659eef4d150c1e68d3682aabc4511c3fa1807d8a 100644 (file)
--- a/bfd/elf-bfd.h
+++ b/bfd/elf-bfd.h
@@ -2940,6 +2940,10 @@ extern char *elfcore_write_aarch_pauth
   (bfd *, char *, int *, const void *, int);
 extern char *elfcore_write_aarch_mte
   (bfd *, char *, int *, const void *, int);
+extern char *elfcore_write_aarch_ssve
+  (bfd *, char *, int *, const void *, int);
+extern char *elfcore_write_aarch_za
+  (bfd *, char *, int *, const void *, int);
 extern char *elfcore_write_arc_v2
   (bfd *, char *, int *, const void *, int);
 extern char *elfcore_write_riscv_csr

diff --git a/bfd/elf.c b/bfd/elf.c
index c797c11d62d67b00d3313a2e73a8421ec1291399..33cc39875f9b2dfb04995461791d195ebea7be90 100644 (file)
--- a/bfd/elf.c
+++ b/bfd/elf.c
@@ -10679,6 +10679,18 @@ elfcore_grok_aarch_mte (bfd *abfd, Elf_Internal_Note *note)
                                          note);
 }
 
+static bool
+elfcore_grok_aarch_ssve (bfd *abfd, Elf_Internal_Note *note)
+{
+  return elfcore_make_note_pseudosection (abfd, ".reg-aarch-ssve", note);
+}
+
+static bool
+elfcore_grok_aarch_za (bfd *abfd, Elf_Internal_Note *note)
+{
+  return elfcore_make_note_pseudosection (abfd, ".reg-aarch-za", note);
+}
+
 static bool
 elfcore_grok_arc_v2 (bfd *abfd, Elf_Internal_Note *note)
 {
@@ -11394,6 +11406,20 @@ elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note)
       else
        return true;
 
+    case NT_ARM_SSVE:
+      if (note->namesz == 6
+         && strcmp (note->namedata, "LINUX") == 0)
+       return elfcore_grok_aarch_ssve (abfd, note);
+      else
+       return true;
+
+    case NT_ARM_ZA:
+      if (note->namesz == 6
+         && strcmp (note->namedata, "LINUX") == 0)
+       return elfcore_grok_aarch_za (abfd, note);
+      else
+       return true;
+
     case NT_GDB_TDESC:
       if (note->namesz == 4
          && strcmp (note->namedata, "GDB") == 0)
@@ -13008,6 +13034,34 @@ elfcore_write_aarch_mte (bfd *abfd,
                             size);
 }
 
+char *
+elfcore_write_aarch_ssve (bfd *abfd,
+                         char *buf,
+                         int *bufsiz,
+                         const void *aarch_ssve,
+                         int size)
+{
+  char *note_name = "LINUX";
+  return elfcore_write_note (abfd, buf, bufsiz,
+                            note_name, NT_ARM_SSVE,
+                            aarch_ssve,
+                            size);
+}
+
+char *
+elfcore_write_aarch_za (bfd *abfd,
+                       char *buf,
+                       int *bufsiz,
+                       const void *aarch_za,
+                       int size)
+{
+  char *note_name = "LINUX";
+  return elfcore_write_note (abfd, buf, bufsiz,
+                            note_name, NT_ARM_ZA,
+                            aarch_za,
+                            size);
+}
+
 char *
 elfcore_write_arc_v2 (bfd *abfd,
                      char *buf,
@@ -13189,6 +13243,10 @@ elfcore_write_register_note (bfd *abfd,
     return elfcore_write_aarch_pauth (abfd, buf, bufsiz, data, size);
   if (strcmp (section, ".reg-aarch-mte") == 0)
     return elfcore_write_aarch_mte (abfd, buf, bufsiz, data, size);
+  if (strcmp (section, ".reg-aarch-ssve") == 0)
+    return elfcore_write_aarch_ssve (abfd, buf, bufsiz, data, size);
+  if (strcmp (section, ".reg-aarch-za") == 0)
+    return elfcore_write_aarch_za (abfd, buf, bufsiz, data, size);
   if (strcmp (section, ".reg-arc-v2") == 0)
     return elfcore_write_arc_v2 (abfd, buf, bufsiz, data, size);
   if (strcmp (section, ".gdb-tdesc") == 0)