REG_RCX             9 src/pkg/runtime/signal_netbsd_amd64.h #define SIG_RCX(info, ctxt) (SIG_REGS(ctxt).__gregs[REG_RCX])
REG_RCX             9 src/pkg/runtime/signal_solaris_amd64.h #define SIG_RCX(info, ctxt) (SIG_REGS(ctxt).gregs[REG_RCX])