From d803c9090308ac98431fcd19c73d5755817df164 Mon Sep 17 00:00:00 2001
From: SashegDev <gdsasheg@gmail.com>
Date: Fri, 11 Sep 2026 06:06:59 +0000
Subject: [PATCH] saimaa: BKPT in exception vectors for fault capture

---
 qemu/saimaa.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/qemu/saimaa.c b/qemu/saimaa.c
index 2e51525..95da034 100644
--- a/qemu/saimaa.c
+++ b/qemu/saimaa.c
@@ -113,6 +113,11 @@ static uint64_t saimaa_vec_read(void *opaque, hwaddr off, unsigned size)
                 (unsigned)off, (unsigned long)pc - (th ? 4 : 8));
         saimaa_vec_n++;
     }
+    /* BKPT at exception vectors: data/prefetch abort fetch traps to gdb */
+    if (off == 0x8 || off == 0xC || off == 0x10 || off == 0x18 ||
+        off == 0x1C) {
+        return 0xE1200070;
+    }
     return 0;
 }