HelenOS sources

__CONTEXT_OFFSET_X28   43 uspace/lib/c/arch/arm64/include/libarch/fibril_context.h #define __CONTEXT_OFFSET_X28    0x58
__CONTEXT_OFFSET_X28   61 uspace/lib/c/arch/riscv64/include/libarch/fibril_context.h #define __CONTEXT_OFFSET_X28  0xe8