--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rvinterf/etm/pktsort.c	Sun Nov 24 08:03:27 2013 +0000
@@ -0,0 +1,111 @@
+/*
+ * Here we sort out incoming packets from the target relayed via rvinterf.
+ */
+
+#include <sys/types.h>
+#include <stdio.h>
+#include <string.h>
+#include <strings.h>
+#include <stdlib.h>
+#include "../pktmux.h"
+#include "../limits.h"
+#include "../localsock.h"
+#include "localtypes.h"
+#include "etm.h"
+
+extern u_char rvi_msg[];
+extern int rvi_msg_len;
+
+void
+safe_print_trace(src, srclen, dest)
+	u_char *src;
+	char *dest;
+{
+	int i, c;
+	char *dp;
+
+	dp = dest;
+	for (i = 0; i < srclen; i++) {
+		c = src[i];
+		if (c & 0x80) {
+			*dp++ = 'M';
+			*dp++ = '-';
+			c &= 0x7F;
+		}
+		if (c < 0x20) {
+			*dp++ = '^';
+			*dp++ = c + '@';
+		} else if (c == 0x7F) {
+			*dp++ = '^';
+			*dp++ = '?';
+		} else
+			*dp++ = c;
+	}
+	*dp = '\0';
+}
+
+static void
+handle_useid_0()
+{
+	char buf[MAX_PKT_FROM_TARGET*4];
+
+	if (strncmp(rvi_msg + 7, "RVT: Lost Message", 17))
+		return;
+	safe_print_trace(rvi_msg + 7, rvi_msg_len - 7, buf);
+	async_msg_output(buf);
+}
+
+static void
+print_etm_trace()
+{
+	char buf[MAX_PKT_FROM_TARGET*4];
+
+	strcpy(buf, "ETM Tr: ");
+	safe_print_trace(rvi_msg + 7, rvi_msg_len - 7, buf + 9);
+	async_msg_output(buf);
+}
+
+static void
+process_rvt()
+{
+	u32 useid;
+
+	if (rvi_msg_len < 7) {
+		tty_cleanup();
+		fprintf(stderr, "Error: rvinterf sent us an invalid RVT msg\n");
+		exit(1);
+	}
+	useid = rvi_msg[2] << 24 | rvi_msg[3] << 16 | rvi_msg[4] << 8
+		| rvi_msg[5];
+	switch (useid) {
+	case 0:
+		handle_useid_0();
+		return;
+	case ETM_USE_ID:
+		print_etm_trace();
+		return;
+	default:
+		tty_cleanup();
+		fprintf(stderr, "unexpected fwd of USEID %08X from rvinterf\n",
+			useid);
+		exit(1);
+	}
+}
+
+void
+process_pkt_from_target()
+{
+	switch (rvi_msg[1]) {
+	case RVT_RV_HEADER:
+		process_rvt();
+		return;
+	case RVT_TM_HEADER:
+		etm_packet_rx();
+		return;
+	default:
+		tty_cleanup();
+		fprintf(stderr, "unexpected fwd of MUX %02X from rvinterf\n",
+			rvi_msg[1]);
+		exit(1);
+	}
+}