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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>
This commit is contained in:
Jon Povey 2010-05-31 11:56:42 +09:00 committed by Øyvind Harboe
parent 86e851e1e2
commit d944a0bed7
1 changed files with 5 additions and 0 deletions
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5
src/target/etm.c
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@ -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;