REGS_SP_INDEX     457 arch/um/os-Linux/skas/process.c 	thread_regs[REGS_SP_INDEX] = STUB_DATA + UM_KERN_PAGE_SIZE -
REGS_SP_INDEX     460 arch/um/os-Linux/skas/process.c 	thread_regs[REGS_SP_INDEX] -= __SIGNAL_FRAMESIZE;