From: Tejas Belagod <tejas.belagod@arm.com>
Date: Tue, 5 Oct 2021 08:43:12 +0000 (+0000)
Subject: Support for a new pacbti unwind opcode.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=09854a8870e63bd0d976d4d0dd7bd6b9b91348b1;p=binutils-gdb.git

Support for a new pacbti unwind opcode.

This patch adds readelf support for decoding the exception table
opcode for restoring the RA_AUTH_CODE pseudo register defined by the
EHABI
(https://github.com/ARM-software/abi-aa/releases/download/2021Q1/ehabi32.pdf
Section 10.3).

	* readelf.c (decode_arm_unwind_bytecode): Add support to decode
	restoring RA_AUTH_CODE pseudo register.
---

diff --git a/binutils/readelf.c b/binutils/readelf.c
index 682eacdef14..1fa7ef45708 100644
--- a/binutils/readelf.c
+++ b/binutils/readelf.c
@@ -9419,6 +9419,8 @@ decode_arm_unwind_bytecode (Filedata *                 filedata,
 	    printf ("-D%d", first + last);
 	  printf ("}");
 	}
+      else if (op == 0xb4)
+	printf (_("     pop {ra_auth_code}"));
       else if ((op & 0xf8) == 0xb8 || (op & 0xf8) == 0xd0)
 	{
 	  unsigned int count = op & 0x07;