Add trace { endian = big/little; } field
authorMathieu Desnoyers <mathieu.desnoyers@efficios.com>
Wed, 4 May 2011 19:47:37 +0000 (15:47 -0400)
committerMathieu Desnoyers <mathieu.desnoyers@efficios.com>
Wed, 4 May 2011 19:47:37 +0000 (15:47 -0400)
Only useful when the packet headers don't have a magic number.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
common-trace-format-proposal.txt

index 35c1e71b4c662abdfb509149c2a7ca73ade1ef27..f2f7e232b4b7b0a23513a74ac24490b8286664ce 100644 (file)
@@ -888,12 +888,17 @@ readable by accessing the upper dynamic scopes.
 
 The grammar representing the TSDL metadata is presented in Appendix C.
 TSDL Grammar. This section presents a rather ligher reading that
-consists in examples of TSDL metadata, with template values:
+consists in examples of TSDL metadata, with template values.
+
+Note that the trace endianness is usually extracted from the packet
+header magic number. The "endian" field is only needed when the magic
+number packet header field is not present.
 
 trace {
   major = value;                               /* Trace format version */
   minor = value;
   uuid = "aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa";       /* Trace UUID */
+  endian = big OR little;                      /* Endianness (optional) */
   packet.header := struct {
     uint32_t magic;
     uint8_t  trace_uuid[16];
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