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    SubjectRe: [PATCH V8 13/15] perf tools: expand perf_event__synthesize_sample()
    On Thu, Jul 18, 2013 at 01:42:55PM +0300, Adrian Hunter wrote:

    SNIP

    > @@ -1349,11 +1349,12 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
    > }
    >
    > int perf_event__synthesize_sample(union perf_event *event, u64 type,
    > + u64 sample_regs_user,
    > const struct perf_sample *sample,
    > bool swapped)
    > {
    > u64 *array;
    > -
    > + size_t sz;
    > /*
    > * used for cross-endian analysis. See git commit 65014ab3
    > * for why this goofiness is needed.
    > @@ -1426,6 +1427,73 @@ int perf_event__synthesize_sample(union perf_event *event, u64 type,
    > array++;
    > }
    >
    > + if (type & PERF_SAMPLE_READ) {
    > + fprintf(stderr, "PERF_SAMPLE_READ is unsupported for now\n");
    > + return -1;
    > + }
    > +
    > + if (type & PERF_SAMPLE_CALLCHAIN) {
    > + sz = (sample->callchain->nr + 1) * sizeof(u64);
    > + memcpy(array, sample->callchain, sz);
    > + array = (void *)array + sz;
    > + }
    > +
    > + if (type & PERF_SAMPLE_RAW) {
    > + u.val32[0] = sample->raw_size;
    > + if (WARN_ONCE(swapped,
    > + "Endianness of raw data not corrected!\n")) {
    > + /*
    > + * Inverse of what is done in perf_evsel__parse_sample
    > + */
    > + u.val32[0] = bswap_32(u.val32[0]);
    > + u.val32[1] = bswap_32(u.val32[1]);
    > + u.val64 = bswap_64(u.val64);
    > + }
    > + *array = u.val64;
    > + array = (void *)array + sizeof(u32);
    > +
    > + memcpy(array, sample->raw_data, sample->raw_size);
    > + array = (void *)array + sample->raw_size;
    > + }
    > +
    > + if (type & PERF_SAMPLE_BRANCH_STACK) {
    > + sz = sample->branch_stack->nr * sizeof(struct branch_entry);
    > + sz += sizeof(u64);
    > + memcpy(array, sample->branch_stack, sz);
    > + array = (void *)array + sz;
    > + }
    > +
    > + if (type & PERF_SAMPLE_REGS_USER) {
    > + if (sample->user_regs.regs && sample_regs_user) {
    > + *array++ = sample_regs_user;

    it's 'enum perf_sample_regs_abi' value that goes here ^^^

    I guess for now it could be hardcoded like:

    #if defined(__x86_64__)
    abi = PERF_SAMPLE_REGS_ABI_64
    #else
    #if defined(__i386__)
    abi = PERF_SAMPLE_REGS_ABI_64
    #endif
    WARN()
    #endif


    jirka


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