From 9578910d7ee5d149ec9a9c46d86f484dc9868bf1 Mon Sep 17 00:00:00 2001
From: Lofty <dan.ravensloft@gmail.com>
Date: Thu, 12 Aug 2021 16:01:48 +0100
Subject: B8 instructions cannot be predicated

---
 src/lib.rs | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'src/lib.rs')

diff --git a/src/lib.rs b/src/lib.rs
index 79a5184..4ae7146 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1323,6 +1323,22 @@ impl yaxpeax_arch::Instruction for InstructionBundle {
             insn.predicate() == 0
         };
 
+        for insn in &self.instructions {
+            match insn.opcode {
+                // B8 family instructions cannot be predicated
+                Opcode::Cover | Opcode::Clrrb | Opcode::Clrrb_pr | Opcode::Rfi | Opcode::Bsw_0 | Opcode::Bsw_1 | Opcode::Epc => {
+                    if insn.predicate() != 0 {
+                        return false;
+                    }
+                },
+                // Undefined opcode regions
+                Opcode::Purple | Opcode::Cyan | Opcode::Brown | Opcode::White => {
+                    return false;
+                },
+                _ => {},
+            }
+        }
+
         if self.instructions[0].opcode() == Opcode::Alloc && !validate_alloc(&self.instructions[0]) {
             return false;
         }
-- 
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