And store the parsed value there.  Note that the 'abi' is
0 (no registers), 1 (32-bit registers) or 2 (64-bit registers),
but the registers are anyway copied one-by-one as 64-bit
values onto the event i.e. see 'perf_output_sample_regs()'

Signed-off-by: Adrian Hunter <adrian.hun...@intel.com>
---
 tools/perf/util/event.h | 1 +
 tools/perf/util/evsel.c | 7 +++----
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index b0921fe..6bb5d7c 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -78,6 +78,7 @@ struct sample_event {
 };
 
 struct regs_dump {
+       u64 abi;
        u64 *regs;
 };
 
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 4b2819b..81c170f 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -1389,13 +1389,12 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, 
union perf_event *event,
        }
 
        if (type & PERF_SAMPLE_REGS_USER) {
-               u64 avail;
-
                /* First u64 tells us if we have any regs in sample. */
                OVERFLOW_CHECK_u64(array);
-               avail = *array++;
+               data->user_regs.abi = *array;
+               array++;
 
-               if (avail) {
+               if (data->user_regs.abi) {
                        u64 regs_user = evsel->attr.sample_regs_user;
 
                        sz = hweight_long(regs_user) * sizeof(u64);
-- 
1.7.11.7

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