From 5845f3b71c09bb1a16bd6fec18e876708aaf02d6 Mon Sep 17 00:00:00 2001
From: Parshintsev Anatoly <anatoly.parshintsev@syntacore.com>
Date: Fri, 10 Feb 2023 02:08:40 +0300
Subject: [PATCH] CSR_MCOUNTEREN should not exist if U-mode is not supported

Change-Id: I1a2420fb88bd3ee37f6a539992e8dc119fdd6e0e
---
 src/target/riscv/riscv.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/target/riscv/riscv.c b/src/target/riscv/riscv.c
index 378704175..d198010dc 100644
--- a/src/target/riscv/riscv.c
+++ b/src/target/riscv/riscv.c
@@ -5193,6 +5193,9 @@ int riscv_init_registers(struct target *target)
 				case CSR_VLENB:
 					r->exist = (info->vlenb > 0);
 					break;
+				case CSR_MCOUNTEREN:
+					r->exist = riscv_supports_extension(target, 'U');
+					break;
 			}
 
 			if (!r->exist && !list_empty(&info->expose_csr)) {