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#####################
C calling conventions
#####################
cdecl (Windows X86)
-------------------
Subroutine arguments are passed on the stack.
Integer values and memory addresses are returned in the EAX register
Registers EAX, ECX, and EDX are caller-saved, and the rest are callee-saved. [#wiki-call-conv]_
Other
-----
GCC keeps stack aligned to 16 bytes because called function may be SSE2 instruction that requires alignment to 16 bytes. [#gcc-stack-alignment]_
Footnotes
---------
.. [#wiki-call-conv] https://en.wikipedia.org/wiki/X86_calling_conventions
.. [#gcc-stack-alignment] `StackOverflow: why does the compiler subtract value on ESP <https://stackoverflow.com/q/38128940>`_
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