[aarch64] Add support for pointer authentication B key

[deliverable/binutils-gdb.git] / gas / config / tc-aarch64.c

diff --git a/gas/config/tc-aarch64.c b/gas/config/tc-aarch64.c
index 3fed11cb6c61430f1c4822a1a18b7635c473bebf..4c97703f22ea9825b80e36f78a4864fcd0d5caf7 100644 (file)
--- a/gas/config/tc-aarch64.c
+++ b/gas/config/tc-aarch64.c
@@ -1993,6 +1993,14 @@ s_aarch64_inst (int ignored ATTRIBUTE_UNUSED)
   demand_empty_rest_of_line ();
 }
 
+static void
+s_aarch64_cfi_b_key_frame (int ignored ATTRIBUTE_UNUSED)
+{
+  demand_empty_rest_of_line ();
+  struct fde_entry *fde = frchain_now->frch_cfi_data->cur_fde_data;
+  fde->pauth_key = AARCH64_PAUTH_KEY_B;
+}
+
 #ifdef OBJ_ELF
 /* Emit BFD_RELOC_AARCH64_TLSDESC_ADD on the next ADD instruction.  */
 
@@ -2067,6 +2075,7 @@ const pseudo_typeS md_pseudo_table[] = {
   {"arch", s_aarch64_arch, 0},
   {"arch_extension", s_aarch64_arch_extension, 0},
   {"inst", s_aarch64_inst, 0},
+  {"cfi_b_key_frame", s_aarch64_cfi_b_key_frame, 0},
 #ifdef OBJ_ELF
   {"tlsdescadd", s_tlsdescadd, 0},
   {"tlsdesccall", s_tlsdesccall, 0},