diff --git a/config.sub b/config.sub
index 38f3d037a78..d099cebfb3d 100755
--- a/config.sub
+++ b/config.sub
@@ -1749,7 +1749,7 @@ case $os in
 	     | onefs* | tirtos* | phoenix* | fuchsia* | redox* | bme* \
 	     | midnightbsd* | amdhsa* | unleashed* | emscripten* | wasi* \
 	     | nsk* | powerunix* | genode* | zvmoe* | qnx* | emx* | zephyr* \
-	     | fiwix* )
+	     | fiwix* | xenon* )
 		;;
 	# This one is extra strict with allowed versions
 	sco3.2v2 | sco3.2v[4-9]* | sco5v6*)
diff --git a/fixincludes/mkfixinc.sh b/fixincludes/mkfixinc.sh
index df90720b716..4b40063c6bd 100755
--- a/fixincludes/mkfixinc.sh
+++ b/fixincludes/mkfixinc.sh
@@ -20,7 +20,8 @@ case $machine in
     powerpcle-*-eabisim* | \
     powerpcle-*-eabi* | \
     *-*-vxworks7* | \
-    *-musl* )
+    *-musl* | \
+    *-fcx-* )
 	#  IF there is no include fixing,
 	#  THEN create a no-op fixer and exit
 	(echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
diff --git a/gcc/config.gcc b/gcc/config.gcc
index 95c91ee02be..0defa13dc69 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -825,6 +825,11 @@ case ${target} in
   rust_target_objs="${rust_target_objs} dragonfly-rust.o"
   target_has_targetrustm=yes
   ;;
+*-fcx-*)
+  # Configuration for FreeChainXenon
+  gas=yes
+  gnu_ld=yes
+  ;;
 *-*-freebsd*)
   # This is the generic ELF configuration of FreeBSD.  Later
   # machine-specific sections may refine and add to this
@@ -1758,6 +1763,12 @@ epiphany-*-elf | epiphany-*-rtems*)
 	tm_defines="${tm_defines} EPIPHANY_STACK_OFFSET=${with_stack_offset:-8}"
 	extra_headers="epiphany_intrinsics.h"
 	;;
+*-fcx-*)
+	tm_file="${tm_file} elfos.h gnu-user.h freebsd-spec.h newlib-stdint.h rs6000/sysv4.h rs6000/eabi.h rs6000/eabialtivec.h"
+	extra_options="${extra_options} rs6000/sysv4.opt"
+	tmake_file="rs6000/t-fprules rs6000/t-ppcendian rs6000/t-ppccomm"
+	use_gcc_stdint=wrap
+	;;
 fr30-*-elf)
 	tm_file="elfos.h newlib-stdint.h ${tm_file}"
 	;;
diff --git a/libgcc/config.host b/libgcc/config.host
index e75a7af647f..495f34fc688 100644
--- a/libgcc/config.host
+++ b/libgcc/config.host
@@ -281,6 +281,11 @@ case ${host} in
   tmake_file="$tmake_file t-slibgcc t-slibgcc-gld t-slibgcc-elf-ver"
   extra_parts="crtbegin.o crtend.o crtbeginS.o crtendS.o"
   ;;
+*-fcx-*)
+  # Configuration for FreeChainXenon
+  tmake_file="${tmake_file} rs6000/t-ppccomm rs6000/t-crtstuff t-crtstuff-pic t-fdpbit"
+  extra_parts="$extra_parts crtbegin.o crtend.o crtbeginS.o crtendS.o crtbeginT.o ecrti.o ecrtn.o ncrti.o ncrtn.o"	
+  ;;
 *-*-freebsd*)
   # This is the generic ELF configuration of FreeBSD.  Later
   # machine-specific sections may refine and add to this