tree ad66f3536b09763f0ec919778add86b3573a3b52
parent 3e129f6d46b10b0e1da36b3deffcb55e09631b64
author Alex Brainman <alex.brainman@gmail.com> 1596269444 +1000
committer Alex Brainman <alex.brainman@gmail.com> 1596359994 +0000

windows/svc: align stack in servicemain before calling syscall

I noticed that we call syscall in servicemain without aligning stack.
That is against Windows rules, so align the stack as required.

I tried running this code with specifically non-aligned stack (I aligned
stack, and then subtracted 1 from SP) on my Windows 10 to test this
change. But it makes no difference on my Windows 10 PC - I built and run
golang.org/x/sys/windows/svc/example, and it runs successfully
regardless of stack alignment. But alignment might make difference on
other computers.

Maybe fixes golang/go#40160

Change-Id: I351f7f730fba4aa6dc409a79de4ad737b4a0a7d4
Reviewed-on: https://go-review.googlesource.com/c/sys/+/246317
Run-TryBot: Alex Brainman <alex.brainman@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>