From 47ba20d762fdbacbb1bf9f24dc3f19ea4649b1e6 Mon Sep 17 00:00:00 2001
From: Eyck-Alexander Jentzsch <alex@minres.com>
Date: Sun, 22 Mar 2026 22:47:26 +0100
Subject: [PATCH] Changes simulation ending mechanism (exit function) As higher
 optimization might actually schedule a jump to self while waiting for timer
 interrupts this is a more robust implementation in that sense

---
 port/moonlight/src/bootup.c      | 6 +++---
 test/threadx/run_threadx_test.sh | 1 -
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/port/moonlight/src/bootup.c b/port/moonlight/src/bootup.c
index 69df782..17ac817 100644
--- a/port/moonlight/src/bootup.c
+++ b/port/moonlight/src/bootup.c
@@ -10,6 +10,7 @@
 #include <string.h>
 #include <picotls.h>
 #include <tx_port.h>
+#include <riscv-csr.h>
 #ifdef __cplusplus
 #define EXTERN_C extern "C"
 #else
@@ -121,10 +122,9 @@ void _initialize(void) {
 // This should never be called. Busy loop with the CPU in idle state.
 void _exit(int exit_code) {
     (void)exit_code;
-    // Halt
+    csr_clr_bits_mie(MIE_MTI_BIT_MASK);
+    csr_clr_bits_mstatus(MSTATUS_MIE_BIT_MASK);
     while (1) {
         __asm__ volatile ("wfi");
-        // Incase periodic interrupts are scheduled (e.g. timer), additionaly jump to self
-        for (;;);
     }
 }
\ No newline at end of file
diff --git a/test/threadx/run_threadx_test.sh b/test/threadx/run_threadx_test.sh
index e728176..fa40c93 100755
--- a/test/threadx/run_threadx_test.sh
+++ b/test/threadx/run_threadx_test.sh
@@ -21,7 +21,6 @@ trap 'rm -f "$log_file"' EXIT
 "$simulator" \
     --isa="$isa" \
     -f "$elf" \
-    -p tb.top.core.finish_condition=1 \
     -m 10s \
     | tee "$log_file"