diff --git a/fftw-3.3.8-sw.patch b/fftw-3.3.8-sw.patch
new file mode 100755
index 0000000000000000000000000000000000000000..6d92d13678e3e4c7377d2d2c08c9fb5043e9954a
--- /dev/null
+++ b/fftw-3.3.8-sw.patch
@@ -0,0 +1,53 @@
+diff -Naur fftw-3.3.8.org/kernel/cycle.h fftw-3.3.8.sw/kernel/cycle.h
+--- fftw-3.3.8.org/kernel/cycle.h	2022-03-03 08:12:02.740000000 +0000
++++ fftw-3.3.8.sw/kernel/cycle.h	2022-03-03 08:14:34.660000000 +0000
+@@ -385,6 +385,26 @@
+ #define HAVE_TICK_COUNTER
+ #endif
+ /*----------------------------------------------------------------*/
++#if defined(__GNUC__) && defined(__sw_64__) && !defined(HAVE_TICK_COUNTER)
++/*
++ * The 32-bit cycle counter on sw_64 overflows pretty quickly, 
++ * unfortunately.  A 1GHz machine overflows in 4 seconds.
++ */
++typedef unsigned int ticks;
++
++static __inline__ ticks getticks(void)
++{
++     unsigned long cc;
++     __asm__ __volatile__ ("rtc %0" : "=r"(cc));
++     return (cc & 0xFFFFFFFF);
++}
++
++INLINE_ELAPSED(__inline__)
++
++#define HAVE_TICK_COUNTER
++#endif
++
++/*----------------------------------------------------------------*/
+ #if defined(__GNUC__) && defined(__alpha__) && !defined(HAVE_TICK_COUNTER)
+ /*
+  * The 32-bit cycle counter on alpha overflows pretty quickly, 
+@@ -421,6 +441,22 @@
+ #endif
+ 
+ /*----------------------------------------------------------------*/
++#if (defined(__DECC) || defined(__DECCXX)) && defined(__sw_64) && defined(HAVE_C_ASM_H) && !defined(HAVE_TICK_COUNTER)
++#  include <c_asm.h>
++typedef unsigned int ticks;
++
++static __inline ticks getticks(void)
++{
++     unsigned long cc;
++     cc = asm("rtc %v0");
++     return (cc & 0xFFFFFFFF);
++}
++
++INLINE_ELAPSED(__inline)
++
++#define HAVE_TICK_COUNTER
++#endif
++/*----------------------------------------------------------------*/
+ #if (defined(__DECC) || defined(__DECCXX)) && defined(__alpha) && defined(HAVE_C_ASM_H) && !defined(HAVE_TICK_COUNTER)
+ #  include <c_asm.h>
+ typedef unsigned int ticks;
diff --git a/fftw.spec b/fftw.spec
index 6565df0ba1ebedb95a7426d697078db1bc365085..4693921964ba8f4f773165db096ee892cfa0dbf8 100644
--- a/fftw.spec
+++ b/fftw.spec
@@ -11,11 +11,14 @@
 
 Name:             fftw
 Version:          3.3.8
-Release:          11
+Release:          12
 Summary:          A C subroutine library for computing the discrete Fourier transform
 License:          GPLv2+
 URL:              http://www.fftw.org
 Source0:          http://www.fftw.org/fftw-%{version}.tar.gz
+%ifarch sw_64
+Patch1:           fftw-3.3.8-sw.patch
+%endif
 BuildRequires:    gcc-gfortran autoconf automake libtool time perl-interpreter gcc_secure make
 
 %global quad 0
@@ -461,6 +464,9 @@ fi
 %endif
 
 %changelog
+* Wed Oct 19 2022 wuzx<wuzx1226@qq.com> - 3.3.8-12
+- add sw64 patch
+
 * Mon Mar 28 2022 baizhonggui <baizhonggui@huawei.com> - 3.3.8-11
 - Strip the binary fftw*-wisdom* symbol