From 3d0bdf4bb65bcb676b120ae273c8c28e7f52b911 Mon Sep 17 00:00:00 2001
From: michael <michael5hzg@gmail.com>
Date: Tue, 25 Aug 2020 11:52:07 +0800
Subject: [PATCH] MIPS:improvement FPU support

---
 libcpu/mips/common/stackframe.h | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/libcpu/mips/common/stackframe.h b/libcpu/mips/common/stackframe.h
index 258f9a994f..4f1157aebf 100644
--- a/libcpu/mips/common/stackframe.h
+++ b/libcpu/mips/common/stackframe.h
@@ -22,7 +22,9 @@
 #ifdef RT_USING_FPU
     /* Ensure CU1 (FPU) is enabled */
     MFC0 v1, CP0_STATUS
-    ori v1, ST0_CU1
+    lui t1, %hi(ST0_CU1)
+    addiu t1, t1, %lo(ST0_CU1)
+    or v1, v1, t1
     MTC0 v1, CP0_STATUS
     SSNOP
     cfc1 v1, fcr31
@@ -125,11 +127,13 @@
 #ifdef RT_USING_FPU
     /* Ensure CU1 (FPU) is enabled */
     MFC0 v1, CP0_STATUS
-    ori v1, ST0_CU1
+    lui t1, %hi(ST0_CU1)
+    addiu t1, t1, %lo(ST0_CU1)
+    or v1, v1, t1
     MTC0 v1, CP0_STATUS
     SSNOP
     LONG_L v1, PT_FPU_FCSR31(sp)
-    ctc1 v1, fcsr31
+    ctc1 v1, fcr31
     l.d $f0, PT_FPU_R0(sp)
     l.d $f2, PT_FPU_R2(sp)
     l.d $f4, PT_FPU_R4(sp)