From: Jon Povey <jon.povey@racelogic.co.uk>
Date: Mon, 31 May 2010 02:56:42 +0000 (+0900)
Subject: etm: print something when trace buffer empty
X-Git-Tag: v0.5.0-rc1~659
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=d944a0bed73c63fe52cf546a7121823318e8b593;p=openocd

etm: print something when trace buffer empty

ETM analyze produced no output when the trace buffer was empty.
This patch provides users with a clue.

Signed-off-by: Jon Povey <jon.povey@racelogic.co.uk>
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
---

diff --git a/src/target/etm.c b/src/target/etm.c
index 4f4bf9a4..61ee99a0 100644
--- a/src/target/etm.c
+++ b/src/target/etm.c
@@ -882,6 +882,11 @@ static int etmv1_analyze_trace(struct etm_context *ctx, struct command_context *
 	if (ctx->trace_depth == 0)
 		ctx->capture_driver->read_trace(ctx);
 
+	if (ctx->trace_depth == 0) {
+		command_print(cmd_ctx, "Trace is empty.");
+		return ERROR_OK;
+	}
+
 	/* start at the beginning of the captured trace */
 	ctx->pipe_index = 0;
 	ctx->data_index = 0;