[BFD, LD, AArch64, 1/3] Add support for GNU PROPERTIES in AArch64 for BTI and PAC

[deliverable/binutils-gdb.git] / binutils / readelf.c

diff --git a/binutils/readelf.c b/binutils/readelf.c
index 38e9f1b3455c0f92ff53b76630a1bb80ee08c8e2..7446ffeee21961bf56b12ff16afbf52e5cd35387 100644 (file)
--- a/binutils/readelf.c
+++ b/binutils/readelf.c
@@ -17341,6 +17341,33 @@ decode_x86_feature_2 (unsigned int bitmask)
     }
 }
 
+static void
+decode_aarch64_feature_1_and (unsigned int bitmask)
+{
+  while (bitmask)
+    {
+      unsigned int bit = bitmask & (- bitmask);
+
+      bitmask &= ~ bit;
+      switch (bit)
+       {
+       case GNU_PROPERTY_AARCH64_FEATURE_1_BTI:
+         printf ("BTI");
+         break;
+
+       case GNU_PROPERTY_AARCH64_FEATURE_1_PAC:
+         printf ("PAC");
+         break;
+
+       default:
+         printf (_("<unknown: %x>"), bit);
+         break;
+       }
+      if (bitmask)
+       printf (", ");
+    }
+}
+
 static void
 print_gnu_property_note (Filedata * filedata, Elf_Internal_Note * pnote)
 {
@@ -17475,6 +17502,18 @@ print_gnu_property_note (Filedata * filedata, Elf_Internal_Note * pnote)
                  break;
                }
            }
+         else if (filedata->file_header.e_machine == EM_AARCH64)
+           {
+             if (type == GNU_PROPERTY_AARCH64_FEATURE_1_AND)
+               {
+                 printf ("AArch64 feature: ");
+                 if (datasz != 4)
+                   printf (_("<corrupt length: %#x> "), datasz);
+                 else
+                   decode_aarch64_feature_1_and (byte_get (ptr, 4));
+                 goto next;
+               }
+           }
        }
       else
        {