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windows: use SyscallN in mkwinsyscall

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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-on: https://go-review.googlesource.com/c/sys/+/518995
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: Alex Brainman <alex.brainman@gmail.com>
This commit is contained in:
Mauri de Souza Meneguzzo
2023-08-17 16:18:12 +00:00
committed by Gopher Robot
parent 70233675ae
commit ad02017442
2 changed files with 70 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
windows/mkwinsyscall/mkwinsyscall.go
+7 -3
View File
@@ -57,7 +57,6 @@ import (
"go/parser"
"go/token"
"io"
"io/ioutil"
"log"
"os"
"path/filepath"
@@ -568,6 +567,8 @@ func (f *Fn) SyscallParamCount() int {
return 12
case n <= 15:
return 15
case n <= 42: // current SyscallN limit
return n
default:
panic("too many arguments to system call")
}
@@ -579,6 +580,9 @@ func (f *Fn) Syscall() string {
if c == 3 {
return syscalldot() + "Syscall"
}
if c > 15 {
return syscalldot() + "SyscallN"
}
return syscalldot() + "Syscall" + strconv.Itoa(c)
}
@@ -923,7 +927,7 @@ func main() {
if *filename == "" {
_, err = os.Stdout.Write(data)
} else {
err = ioutil.WriteFile(*filename, data, 0644)
err = os.WriteFile(*filename, data, 0644)
}
if err != nil {
log.Fatal(err)
@@ -1011,7 +1015,7 @@ func {{.HelperName}}({{.HelperParamList}}) {{template "results" .}}{
{{define "results"}}{{if .Rets.List}}{{.Rets.List}} {{end}}{{end}}
{{define "syscall"}}{{.Rets.SetReturnValuesCode}}{{.Syscall}}(proc{{.DLLFuncName}}.Addr(), {{.ParamCount}}, {{.SyscallParamList}}){{end}}
{{define "syscall"}}{{.Rets.SetReturnValuesCode}}{{.Syscall}}(proc{{.DLLFuncName}}.Addr(),{{if le .ParamCount 15}} {{.ParamCount}},{{end}} {{.SyscallParamList}}){{end}}
{{define "tmpvarsreadback"}}{{range .Params}}{{if .TmpVarReadbackCode}}
{{.TmpVarReadbackCode}}{{end}}{{end}}{{end}}