HelenOS sources

__CONTEXT_OFFSET_R15   39 uspace/lib/c/arch/amd64/include/libarch/fibril_context.h #define __CONTEXT_OFFSET_R15  0x38
__CONTEXT_OFFSET_R15   37 uspace/lib/c/arch/ppc32/include/libarch/fibril_context.h #define __CONTEXT_OFFSET_R15  0x14