[binutils-gdb] bfd: Handle note of type NT_X86_SHSTK

[H.J. Lu]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=c44fc1d6b4a1625b8f08e81c39d312fb5d9567c2

commit c44fc1d6b4a1625b8f08e81c39d312fb5d9567c2
Author: Christina Schimpe <christina.schimpe@intel.com>
Date:   Thu Feb 13 16:40:23 2025 +0000

    bfd: Handle note of type NT_X86_SHSTK

Diff:
---
 bfd/elf.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/bfd/elf.c b/bfd/elf.c
index b6f50701928..3073f860621 100644
--- a/bfd/elf.c
+++ b/bfd/elf.c
@@ -10391,6 +10391,12 @@ elfcore_grok_xstatereg (bfd *abfd, Elf_Internal_Note *note)
   return elfcore_make_note_pseudosection (abfd, ".reg-xstate", note);
 }
 
+static bool
+elfcore_grok_sspreg (bfd *abfd, Elf_Internal_Note *note)
+{
+  return elfcore_make_note_pseudosection (abfd, ".reg-ssp", note);
+}
+
 static bool
 elfcore_grok_ppc_vmx (bfd *abfd, Elf_Internal_Note *note)
 {
@@ -11086,6 +11092,13 @@ elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note)
       else
 	return true;
 
+    case NT_X86_SHSTK:		/* Linux CET extension.  */
+      if (note->namesz == 6
+	  && strcmp (note->namedata, "LINUX") == 0)
+	return elfcore_grok_sspreg (abfd, note);
+      else
+	return true;
+
     case NT_PPC_VMX:
       if (note->namesz == 6
 	  && strcmp (note->namedata, "LINUX") == 0)
@@ -12536,6 +12549,15 @@ elfcore_write_xstatereg (bfd *abfd, char *buf, int *bufsiz,
 			     note_name, NT_X86_XSTATE, xfpregs, size);
 }
 
+static char *
+elfcore_write_sspreg (bfd *abfd, char *buf, int *bufsiz,
+		      const void *ssp, int size)
+{
+  const char *note_name = "LINUX";
+  return elfcore_write_note (abfd, buf, bufsiz,
+			     note_name, NT_X86_SHSTK, ssp, size);
+}
+
 char *
 elfcore_write_x86_segbases (bfd *abfd, char *buf, int *bufsiz,
 			    const void *regs, int size)
@@ -13131,6 +13153,8 @@ elfcore_write_register_note (bfd *abfd,
     return elfcore_write_xstatereg (abfd, buf, bufsiz, data, size);
   if (strcmp (section, ".reg-x86-segbases") == 0)
     return elfcore_write_x86_segbases (abfd, buf, bufsiz, data, size);
+  if (strcmp (section, ".reg-ssp") == 0)
+    return elfcore_write_sspreg (abfd, buf, bufsiz, data, size);
   if (strcmp (section, ".reg-ppc-vmx") == 0)
     return elfcore_write_ppc_vmx (abfd, buf, bufsiz, data, size);
   if (strcmp (section, ".reg-ppc-vsx") == 0)