switch (sig)
	{
	case SIGALRM:
		ret = REG_EHUNG;
		break;
	case SIGBUS:
		ret = REG_EBUS;
		break;
	default:
		ret = REG_EFAULT;
		break;
	}
	sigunblock(sig);
	longjmp(state.gotcha, ret);
}

static char*
getline(FILE* fp)
{
	static char	buf[32 * 1024];

	register char*	s = buf;
	register char*	e = &buf[sizeof(buf)];
	register char*	b;

	RET

TEXT runtime·mstart(SB),NOSPLIT|TOPFRAME|NOFRAME,$0
	CALL	runtime·mstart0(SB)
	RET // not reached

/*
 *  go-routine
 */

// func gogo(buf *gobuf)
// restore state from Gobuf; longjmp
TEXT runtime·gogo(SB), NOSPLIT, $0-8
	MOVQ	buf+0(FP), BX		// gobuf
	MOVQ	gobuf_g(BX), DX
	MOVQ	0(DX), CX		// make sure g != nil
	JMP	gogo<>(SB)

TEXT gogo<>(SB), NOSPLIT, $0
	get_tls(CX)