diff --git a/target/linux/uml-2.6/patches/02-missing_definitions.patch b/target/linux/uml-2.6/patches/02-missing_definitions.patch
new file mode 100644
index 000000000..7facbfff3
--- /dev/null
+++ b/target/linux/uml-2.6/patches/02-missing_definitions.patch
@@ -0,0 +1,37 @@
+# Newer libcs don't define the JB_* jmp_buf access macros.  If this is
+# the case, we provide values ourselves.
+Index: linux-2.6.15/arch/um/os-Linux/sys-i386/registers.c
+===================================================================
+--- linux-2.6.15.orig/arch/um/os-Linux/sys-i386/registers.c	2006-02-13 13:00:06.000000000 -0500
++++ linux-2.6.15/arch/um/os-Linux/sys-i386/registers.c	2006-02-13 13:04:07.000000000 -0500
+@@ -130,6 +130,12 @@ void get_safe_registers(unsigned long *r
+ 		       HOST_FP_SIZE * sizeof(unsigned long));
+ }
+ 
++#ifndef JB_PC
++#define JB_PC 5
++#define JB_SP 4
++#define JB_BP 3
++#endif
++
+ void get_thread_regs(union uml_pt_regs *uml_regs, void *buffer)
+ {
+ 	struct __jmp_buf_tag *jmpbuf = buffer;
+Index: linux-2.6.15/arch/um/os-Linux/sys-x86_64/registers.c
+===================================================================
+--- linux-2.6.15.orig/arch/um/os-Linux/sys-x86_64/registers.c	2006-02-13 13:00:06.000000000 -0500
++++ linux-2.6.15/arch/um/os-Linux/sys-x86_64/registers.c	2006-02-13 13:04:07.000000000 -0500
+@@ -78,6 +78,12 @@ void get_safe_registers(unsigned long *r
+ 		       HOST_FP_SIZE * sizeof(unsigned long));
+ }
+ 
++#ifndef JB_PC
++#define JB_PC 7
++#define JB_RSP 6
++#define JB_RBP 1
++#endif
++
+ void get_thread_regs(union uml_pt_regs *uml_regs, void *buffer)
+ {
+ 	struct __jmp_buf_tag *jmpbuf = buffer;
+