From b0740c3f75726dd824ded30fc9fef8200d8ff29b Mon Sep 17 00:00:00 2001
From: Luis Machado <luis.machado@linaro.org>
Date: Mon, 29 Nov 2021 07:28:28 -0300
Subject: [PATCH] Handle bitfield instructions in the prologue

Morello GCC seems to generate bitfield instructions in the prologue, which
throws Morello GDB's prologue analyzis off. Handle such instructions so we
can properly skip past the prologue.
---
 gdb/aarch64-tdep.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gdb/aarch64-tdep.c b/gdb/aarch64-tdep.c
index 4f65b2b6b05..a7609b3c1c5 100644
--- a/gdb/aarch64-tdep.c
+++ b/gdb/aarch64-tdep.c
@@ -579,6 +579,10 @@ aarch64_analyze_prologue (struct gdbarch *gdbarch,
 	  /* Stop analysis on branch.  */
 	  break;
 	}
+      else if (inst.opcode->iclass == bitfield)
+	{
+	  /* Do nothing */
+	}
       else if (inst.opcode->op == OP_MOVZ
 	       || (inst.opcode->iclass == a64c
 		   && strcmp (inst.opcode->name, "cpy") == 0))
-- 
2.47.2