From 1bcf829da26ab439b21bfb043b76611c8344d51d Mon Sep 17 00:00:00 2001
From: Student Main <studentmain@aosc.io>
Date: Sun, 17 May 2026 17:28:09 +0800
Subject: [PATCH] fallback to pure C emulation when LSX is not supported by
 processor

---
 src/emu/sigill_hook.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/emu/sigill_hook.c b/src/emu/sigill_hook.c
index 2985358..cad5edc 100644
--- a/src/emu/sigill_hook.c
+++ b/src/emu/sigill_hook.c
@@ -31,6 +31,7 @@
 #include <string.h>
 #include <unistd.h>
 #include "lasx_interpret.h"
+#include <larchintrin.h>
 
 int use_lsx_intrinsics;
 #ifdef LASX_PROFILE
@@ -121,6 +122,10 @@ __attribute__((constructor)) void register_sigill_handler(void) {
   if (env && atoi(env) != 0) {
       use_lsx_intrinsics = 0;
   }
+  const bool has_lsx = __cpucfg(2) & 0b01000000;
+  if (!has_lsx) {
+    use_lsx_intrinsics = 0;
+  }
   // 初始化性能统计
   perf_stats_init();