diff --git a/sm3/sm3blocks_ppc64x.go b/sm3/sm3blocks_ppc64x.go
deleted file mode 100644
index f3ee04d..0000000
--- a/sm3/sm3blocks_ppc64x.go
+++ /dev/null
@@ -1,13 +0,0 @@
-// Copyright 2024 Sun Yimin. All rights reserved.
-// Use of this source code is governed by a MIT-style
-// license that can be found in the LICENSE file.
-
-//go:build (ppc64 || ppc64le) && !purego
-
-package sm3
-
-//go:noescape
-func transposeMatrix(dig **[8]uint32)
-
-//go:noescape
-func copyResultsBy4(dig *uint32, p *byte)
diff --git a/sm3/sm3blocks_ppc64x_test.go b/sm3/sm3blocks_ppc64x_test.go
deleted file mode 100644
index 5d7d89d..0000000
--- a/sm3/sm3blocks_ppc64x_test.go
+++ /dev/null
@@ -1,59 +0,0 @@
-// Copyright 2024 Sun Yimin. All rights reserved.
-// Use of this source code is governed by a MIT-style
-// license that can be found in the LICENSE file.
-
-//go:build (ppc64 || ppc64le) && !purego
-
-package sm3
-
-import (
-	"encoding/binary"
-	"fmt"
-	"testing"
-)
-
-func TestTransposeMatrix(t *testing.T) {
-	var m [4][8]uint32
-	var k uint32 = 0
-	for i := 0; i < 4; i++ {
-		for j := 0; j < 8; j++ {
-			m[i][j] = k
-			k++
-			fmt.Printf("%08x ", m[i][j])
-		}
-		fmt.Println()
-	}
-	input := [4]*[8]uint32{&m[0], &m[1], &m[2], &m[3]}
-	transposeMatrix(&input[0])
-	fmt.Println()
-	fmt.Println()
-	for i := 0; i < 4; i++ {
-		for j := 0; j < 8; j++ {
-			fmt.Printf("%08x ", m[i][j])
-		}
-		fmt.Println()
-	}
-}
-
-func TestCopyResultsBy4(t *testing.T) {
-	var m [4][8]uint32
-	var ret [128]byte
-	var k uint32 = 0
-	for i := 0; i < 4; i++ {
-		for j := 0; j < 8; j++ {
-			m[i][j] = k
-			k++
-			fmt.Printf("%08x ", m[i][j])
-		}
-		fmt.Println()
-	}
-	copyResultsBy4(&m[0][0], &ret[0])
-	fmt.Printf("got: %x\n", ret[:])
-
-	for i := 0; i < 4; i++ {
-		for j := 0; j < 8; j++ {
-			binary.BigEndian.PutUint32(ret[i*32+j*4:], m[i][j])
-		}
-	}
-	fmt.Printf("expected %x\n", ret[:])
-}