toolchain/share/doc/gdb/Memory-Transfer.html

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<h5 class="unnumberedsubsubsec">Memory Transfer</h5>
<p><a name="index-memory-transfer_002c-in-file_002di_002fo-protocol-3621"></a>
Structured data which is transferred using a memory read or write (for
example, a <code>struct stat</code>) is expected to be in a protocol-specific format
with all scalar multibyte datatypes being big endian. Translation to
this representation needs to be done both by the target before the <code>F</code>
packet is sent, and by <span class="sc">gdb</span> before
it transfers memory to the target. Transferred pointers to structured
data should point to the already-coerced data at any time.
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