diff --git a/libffi-Add-sw64-architecture.patch b/libffi-Add-sw64-architecture.patch
new file mode 100644
index 0000000000000000000000000000000000000000..0d64a998c6489041ad66d405621b2c1bc3db9f2c
--- /dev/null
+++ b/libffi-Add-sw64-architecture.patch
@@ -0,0 +1,100 @@
+From 2cf76089d9ae46e020f13c5f3379bda848c2b574 Mon Sep 17 00:00:00 2001
+From: Miao Changwei <miaochangwei@uniontech.com>
+Date: Sat, 1 Mar 2025 12:15:27 +0800
+Subject: [PATCH] Add support for sunway
+
+---
+ Makefile.am                                     | 2 ++
+ config.guess                                    | 4 ++++
+ config.sub                                      | 2 +-
+ configure.host                                  | 7 +++++++
+ testsuite/libffi.complex/cls_complex_va_float.c | 4 ++--
+ 5 files changed, 16 insertions(+), 3 deletions(-)
+
+diff --git a/Makefile.am b/Makefile.am
+index 1f8aa9c..4abcb35 100644
+--- a/Makefile.am
++++ b/Makefile.am
+@@ -62,6 +62,7 @@ noinst_HEADERS = src/aarch64/ffitarget.h src/aarch64/internal.h		\
+ 	src/s390/ffitarget.h src/s390/internal.h src/sh/ffitarget.h	\
+ 	src/sh64/ffitarget.h src/sparc/ffitarget.h			\
+ 	src/sparc/internal.h src/tile/ffitarget.h src/vax/ffitarget.h	\
++	src/sw64/ffitarget.h src/sw64/internal.h			\
+ 	src/wasm32/ffitarget.h \
+ 	src/x86/ffitarget.h src/x86/internal.h src/x86/internal64.h	\
+ 	src/x86/asmnames.h src/xtensa/ffitarget.h src/dlmalloc.c	\
+@@ -92,6 +93,7 @@ EXTRA_libffi_la_SOURCES = src/aarch64/ffi.c src/aarch64/sysv.S		\
+ 	src/s390/sysv.S src/sh/ffi.c src/sh/sysv.S src/sh64/ffi.c	\
+ 	src/sh64/sysv.S src/sparc/ffi.c src/sparc/ffi64.c		\
+ 	src/sparc/v8.S src/sparc/v9.S src/tile/ffi.c src/tile/tile.S	\
++	src/sw64/ffi.c src/sw64/sysv.S					\
+ 	src/vax/ffi.c src/vax/elfbsd.S src/x86/ffi.c src/x86/sysv.S	\
+ 	src/wasm32/ffi.c \
+ 	src/x86/ffiw64.c src/x86/win64.S src/x86/ffi64.c		\
+diff --git a/config.guess b/config.guess
+index f6d217a..2e53d17 100644
+--- a/config.guess
++++ b/config.guess
+@@ -1022,6 +1022,10 @@ EOF
+ 	if test "$?" = 0 ; then LIBC=gnulibc1 ; fi
+ 	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+ 	;;
++    sw_64:Linux:*:* | sw64:Linux:*:*)
++       UNAME_MACHINE=sw_64
++       GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
++       ;;
+     arc:Linux:*:* | arceb:Linux:*:* | arc32:Linux:*:* | arc64:Linux:*:*)
+ 	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+ 	;;
+diff --git a/config.sub b/config.sub
+index 2c5120f..4b28003 100644
+--- a/config.sub
++++ b/config.sub
+@@ -1246,7 +1246,7 @@ case $cpu-$vendor in
+ 			| sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet \
+ 			| sparclite \
+ 			| sparcv8 | sparcv9 | sparcv9b | sparcv9v | sv1 | sx* \
+-			| spu \
++			| spu | sw_64 \
+ 			| tahoe \
+ 			| thumbv7* \
+ 			| tic30 | tic4x | tic54x | tic55x | tic6x | tic80 \
+diff --git a/configure.host b/configure.host
+index c69a49c..eb4a869 100644
+--- a/configure.host
++++ b/configure.host
+@@ -250,6 +250,13 @@ case "${host}" in
+ 	SOURCES="ffi.c ffi64.c v8.S v9.S"
+ 	;;
+ 
++  sw_64*-*-* | sw64*-*-*)
++	TARGET=SW64; TARGETDIR=sw64;
++	# Support 128-bit long double, changeable via command-line switch.
++	HAVE_LONG_DOUBLE='defined(__LONG_DOUBLE_128__)'
++	SOURCES="ffi.c sysv.S"
++	;;
++
+   tile*-*)
+         TARGET=TILE; TARGETDIR=tile
+ 	SOURCES="ffi.c tile.S"
+diff --git a/testsuite/libffi.complex/cls_complex_va_float.c b/testsuite/libffi.complex/cls_complex_va_float.c
+index 2b17826..0861ac6 100644
+--- a/testsuite/libffi.complex/cls_complex_va_float.c
++++ b/testsuite/libffi.complex/cls_complex_va_float.c
+@@ -6,11 +6,11 @@
+ 
+ /* { dg-do run } */
+ 
+-/* Alpha splits _Complex into two arguments.  It's illegal to pass
++/* Alpha/Sunway splits _Complex into two arguments.  It's illegal to pass
+    float through varargs, so _Complex float goes badly.  In sort of
+    gets passed as _Complex double, but the compiler doesn't agree
+    with itself on this issue.  */
+-/* { dg-do run { xfail alpha*-*-* } } */
++/* { dg-do run { xfail alpha*-*-* sw64*-*-* sw_64*-*-* } } */
+ 
+ #include "complex_defs_float.inc"
+ #include "cls_complex_va.inc"
+-- 
+2.47.1
+
diff --git a/libffi.spec b/libffi.spec
index 508159637ed2f27086cb66b71459970db3d6cc10..08495675c5391817c57b622a4aa7c3f2368a1020 100644
--- a/libffi.spec
+++ b/libffi.spec
@@ -1,6 +1,6 @@
 Name:		libffi
 Version:	3.4.7
-Release:	1
+Release:	2
 Summary:	A Portable Foreign Function Interface Library
 License:	MIT
 URL:		https://sourceware.org/libffi
@@ -9,6 +9,7 @@ Source1:	ffi-multilib.h
 Source2:	ffitarget-multilib.h
 
 Patch1: 	fix-AARCH64EB-support.patch
+Patch2:         libffi-Add-sw64-architecture.patch
 
 BuildRequires:	gcc gcc-c++ dejagnu
 BuildRequires:  make
@@ -79,6 +80,9 @@ rm -f $RPM_BUILD_ROOT%{_infodir}/dir
 %{_infodir}/libffi.info*
 
 %changelog
+* Sat Mar 01 2025 mahailiang <mahailiang@uniontech.com> - 3.4.7-2
+- add sw_64 support
+
 * Sat Feb 22 2025 Funda Wang <fundawang@yeah.net> - 3.4.7-1
 - update to version 3.4.7