* Released under the GPL v2. (and only v2, not any later version)
*/
+#include <byteswap.h>
+#include "asm/bug.h"
#include "evsel.h"
#include "evlist.h"
#include "util.h"
#define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
+int __perf_evsel__sample_size(u64 sample_type)
+{
+ u64 mask = sample_type & PERF_SAMPLE_MASK;
+ int size = 0;
+ int i;
+
+ for (i = 0; i < 64; i++) {
+ if (mask & (1ULL << i))
+ size++;
+ }
+
+ size *= sizeof(u64);
+
+ return size;
+}
+
void perf_evsel__init(struct perf_evsel *evsel,
struct perf_event_attr *attr, int idx)
{
int perf_event__parse_sample(const union perf_event *event, u64 type,
int sample_size, bool sample_id_all,
- struct perf_sample *data)
+ struct perf_sample *data, bool swapped)
{
const u64 *array;
+ /*
+ * used for cross-endian analysis. See git commit 65014ab3
+ * for why this goofiness is needed.
+ */
+ union {
+ u64 val64;
+ u32 val32[2];
+ } u;
+
+
data->cpu = data->pid = data->tid = -1;
data->stream_id = data->id = data->time = -1ULL;
}
if (type & PERF_SAMPLE_TID) {
- u32 *p = (u32 *)array;
- data->pid = p[0];
- data->tid = p[1];
+ u.val64 = *array;
+ if (swapped) {
+ /* undo swap of u64, then swap on individual u32s */
+ u.val64 = bswap_64(u.val64);
+ u.val32[0] = bswap_32(u.val32[0]);
+ u.val32[1] = bswap_32(u.val32[1]);
+ }
+
+ data->pid = u.val32[0];
+ data->tid = u.val32[1];
array++;
}
array++;
}
+ data->addr = 0;
if (type & PERF_SAMPLE_ADDR) {
data->addr = *array;
array++;
}
if (type & PERF_SAMPLE_CPU) {
- u32 *p = (u32 *)array;
- data->cpu = *p;
+
+ u.val64 = *array;
+ if (swapped) {
+ /* undo swap of u64, then swap on individual u32s */
+ u.val64 = bswap_64(u.val64);
+ u.val32[0] = bswap_32(u.val32[0]);
+ }
+
+ data->cpu = u.val32[0];
array++;
}
}
if (type & PERF_SAMPLE_RAW) {
- u32 *p = (u32 *)array;
+ u.val64 = *array;
+ if (WARN_ONCE(swapped,
+ "Endianness of raw data not corrected!\n")) {
+ /* undo swap of u64, then swap on individual u32s */
+ u.val64 = bswap_64(u.val64);
+ u.val32[0] = bswap_32(u.val32[0]);
+ u.val32[1] = bswap_32(u.val32[1]);
+ }
if (sample_overlap(event, array, sizeof(u32)))
return -EFAULT;
- data->raw_size = *p;
- p++;
+ data->raw_size = u.val32[0];
- if (sample_overlap(event, p, data->raw_size))
+ if (sample_overlap(event, &u.val32[1], data->raw_size))
return -EFAULT;
- data->raw_data = p;
+ data->raw_data = &u.val32[1];
}
return 0;