windows: use SyscallN in mkwinsyscall

The mkwinsyscall command has a hard limit of 15 on the
number of syscall arguments. Windows has several system
calls with more than 15 arguments, for example CreateFontPackage
has 18 arguments.

If the number of arguments is higher than 15 we use SyscallN.

Fixes golang/go#57914

Change-Id: I4205e779a960ae10c0778de7876154e0d7ec00a1
GitHub-Last-Rev: 1f1e96fab7327f803f8213ca4264d359046971cd
GitHub-Pull-Request: golang/sys#171
Reviewed-by: Alex Brainman <>
TryBot-Result: Gopher Robot <>
Reviewed-by: Ian Lance Taylor <>
Auto-Submit: Ian Lance Taylor <>
Run-TryBot: Ian Lance Taylor <>
Reviewed-by: Dmitri Shuralyov <>
Run-TryBot: Alex Brainman <>
2 files changed
tree: 374d8ae0763293cb117798d5854e6150d8ab3536
  1. cpu/
  2. execabs/
  3. internal/
  4. plan9/
  5. unix/
  6. windows/
  7. .gitattributes
  8. .gitignore
  9. codereview.cfg
  11. go.mod


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This repository holds supplemental Go packages for low-level interactions with the operating system.


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