HelenOS sources

__CONTEXT_OFFSET_R13   37 uspace/lib/c/arch/amd64/include/libarch/fibril_context.h #define __CONTEXT_OFFSET_R13  0x28
__CONTEXT_OFFSET_R13   35 uspace/lib/c/arch/ppc32/include/libarch/fibril_context.h #define __CONTEXT_OFFSET_R13  0x0c