diff -Nuar coreutils-8.30.org/configure coreutils-8.30.sw/configure
--- coreutils-8.30.org/configure	2023-08-08 20:07:32.495829627 +0800
+++ coreutils-8.30.sw/configure	2023-08-08 20:08:07.293053826 +0800
@@ -7318,6 +7318,13 @@
   # (according to the test results of Bruno Haible's ieeefp/fenv_default.m4
   # and the GCC 4.1.2 manual).
   case "$host_cpu" in
+    sw_64*)
+      if test -n "$GCC"; then
+        CPPFLAGS="$CPPFLAGS -mieee"
+      else
+        CPPFLAGS="$CPPFLAGS -ieee"
+      fi
+      ;;
     alpha*)
       # On Alpha systems, a compiler option provides the behaviour.
       # See the ieee(3) manual page, also available at
@@ -15245,6 +15252,9 @@
        alphaev[4-8] | alphaev56 | alphapca5[67] | alphaev6[78] )
          gl_cv_host_cpu_c_abi=alpha
          ;;
+       sw_64* )
+         gl_cv_host_cpu_c_abi=sw_64
+         ;;
 
        arm* | aarch64 )
          # Assume arm with EABI.
diff -Nuar coreutils-8.30.org/lib/uname.c coreutils-8.30.sw/lib/uname.c
--- coreutils-8.30.org/lib/uname.c	2023-08-08 20:07:32.524830648 +0800
+++ coreutils-8.30.sw/lib/uname.c	2023-08-08 20:08:07.294053862 +0800
@@ -222,6 +222,10 @@
           case PROCESSOR_ARCHITECTURE_MIPS:
             strcpy (buf->machine, "mips");
             break;
+          case PROCESSOR_ARCHITECTURE_SW_64:
+          case PROCESSOR_ARCHITECTURE_SW_6464:
+            strcpy (buf->machine, "sw_64");
+            break;
           case PROCESSOR_ARCHITECTURE_ALPHA:
           case PROCESSOR_ARCHITECTURE_ALPHA64:
             strcpy (buf->machine, "alpha");
diff -Nuar coreutils-8.30.org/m4/fpieee.m4 coreutils-8.30.sw/m4/fpieee.m4
--- coreutils-8.30.org/m4/fpieee.m4	2023-08-08 20:07:32.430827340 +0800
+++ coreutils-8.30.sw/m4/fpieee.m4	2023-08-08 20:08:07.295053897 +0800
@@ -30,6 +30,11 @@
   # (according to the test results of Bruno Haible's ieeefp/fenv_default.m4
   # and the GCC 4.1.2 manual).
   case "$host_cpu" in
+    sw_64*)
+      if test -n "$GCC"; then
+        CPPFLAGS="$CPPFLAGS -mieee"
+	fi
+	;;	
     alpha*)
       # On Alpha systems, a compiler option provides the behaviour.
       # See the ieee(3) manual page, also available at
diff -Nuar coreutils-8.30.org/m4/host-cpu-c-abi.m4 coreutils-8.30.sw/m4/host-cpu-c-abi.m4
--- coreutils-8.30.org/m4/host-cpu-c-abi.m4	2023-08-08 20:07:32.424827128 +0800
+++ coreutils-8.30.sw/m4/host-cpu-c-abi.m4	2023-08-08 20:08:07.295053897 +0800
@@ -91,6 +91,12 @@
          ;;
 
 changequote(,)dnl
+       sw_64 )
+changequote([,])dnl
+         gl_cv_host_cpu_c_abi=sw_64
+	;;
+
+changequote(,)dnl
        alphaev[4-8] | alphaev56 | alphapca5[67] | alphaev6[78] )
 changequote([,])dnl
          gl_cv_host_cpu_c_abi=alpha
@@ -355,6 +361,9 @@
 #ifndef __x86_64__
 #undef __x86_64__
 #endif
+#ifndef __sw_64__
+#undef __sw_64__
+#endif
 #ifndef __alpha__
 #undef __alpha__
 #endif