REG_R0             16 src/pkg/runtime/os_netbsd_arm.c 	mc->__gregs[REG_R0] = (uint32)mp;
REG_R0              7 src/pkg/runtime/signal_netbsd_arm.h #define SIG_R0(info, ctxt) (SIG_REGS(ctxt).__gregs[REG_R0])