HelenOS sources

ISTATE_OFFSET_X22   58 kernel/arch/arm64/include/arch/istate_struct.h #define ISTATE_OFFSET_X22    0xd0
ISTATE_OFFSET_X22   54 kernel/arch/riscv64/include/arch/istate_struct.h #define ISTATE_OFFSET_X22   0xb0
ISTATE_OFFSET_X22   58 uspace/lib/c/arch/arm64/include/libarch/istate_struct.h #define ISTATE_OFFSET_X22    0xd0
ISTATE_OFFSET_X22   54 uspace/lib/c/arch/riscv64/include/libarch/istate_struct.h #define ISTATE_OFFSET_X22   0xb0

HelenOS homepage, sources at GitHub