From 0bcfd0f9eab14c6dfd708a237afa06258088d096 Mon Sep 17 00:00:00 2001
From: Mike <45243121+tankf33der@users.noreply.github.com>
Date: Fri, 25 Apr 2025 15:24:52 +0300
Subject: [PATCH] cgen: fix riscv64 closure thunk (use floating point register)
 (#24315)

---
 vlib/v/gen/c/cheaders.v | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/vlib/v/gen/c/cheaders.v b/vlib/v/gen/c/cheaders.v
index 775e4c179f..235e763f0d 100644
--- a/vlib/v/gen/c/cheaders.v
+++ b/vlib/v/gen/c/cheaders.v
@@ -127,11 +127,12 @@ static char __CLOSURE_GET_DATA_BYTES[] = {
 static char __closure_thunk[] = {
 	0x97, 0xCF, 0xFF, 0xFF,  // auipc t6, 0xffffc
 	0x03, 0xBF, 0x8F, 0x00,  // ld    t5, 8(t6)
-	0x67, 0x00, 0x0F, 0x00   // jr    t5
+	0x07, 0xB3, 0x0F, 0x00,  // fld   ft6, 0(t6)
+	0x67, 0x00, 0x0F, 0x00,  // jr    t5
 };
 static char __CLOSURE_GET_DATA_BYTES[] = {
-	0x03, 0xb5, 0x0f, 0x00,  // ld    a0, 0(t6)
-	0x67, 0x80, 0x00, 0x00   // ret
+	0x53, 0x05, 0x03, 0xE2,  // fmv.x.d a0, ft6
+	0x67, 0x80, 0x00, 0x00,  // ret
 };
 #elif defined (__V_rv32)
 static char __closure_thunk[] = {