diff --git a/src/system/libroot/os/arch/sparc/Jamfile b/src/system/libroot/os/arch/sparc/Jamfile
index 725be98c7d..43d9ed6aff 100644
--- a/src/system/libroot/os/arch/sparc/Jamfile
+++ b/src/system/libroot/os/arch/sparc/Jamfile
@@ -13,6 +13,8 @@ for architectureObject in [ MultiArchSubDirSetup sparc ] {
 		SEARCH_SOURCE += [ FDirName $(SUBDIR) $(DOTDOT) generic ] ;
 
 		MergeObject <$(architecture)>os_arch_$(TARGET_ARCH).o :
+			byteorder.S
+
 			stack_frame.c
 			system_time.c
 			thread.c
diff --git a/src/system/libroot/os/arch/sparc/byteorder.S b/src/system/libroot/os/arch/sparc/byteorder.S
new file mode 100644
index 0000000000..c7aa4616df
--- /dev/null
+++ b/src/system/libroot/os/arch/sparc/byteorder.S
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2019, Adrien Destugues, pulkomandy@pulkomandy.tk
+ * Distributed under the terms of the MIT License.
+ */
+
+#include <asm_defs.h>
+
+.text
+
+// These function use the unused parameters slots on the stack (reserved for
+// arguments that are in fact passed in registers) for temporary storage.
+// %o0 is corrupt, but it is a scratch register so this should be fine.
+
+/* float __swap_float(float value)
+ */
+FUNCTION(__swap_float):
+	add %sp, 2175, %o0
+	st %d0, [%o0]
+	lda [%o0] 0x88, %d0
+	return
+FUNCTION_END(__swap_float)
+
+
+/* double __swap_double(double value)
+ */
+FUNCTION(__swap_double):
+	add %sp, 2175, %o0
+	std %d0, [%o0]
+	ldda [%o0] 0x88, %d0
+	return
+FUNCTION_END(__swap_double)
+