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path: root/dependencies/pkg/mod/golang.org/x/sys@v0.1.0/unix/mksyscall_solaris.go
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Diffstat (limited to 'dependencies/pkg/mod/golang.org/x/sys@v0.1.0/unix/mksyscall_solaris.go')
-rw-r--r--dependencies/pkg/mod/golang.org/x/sys@v0.1.0/unix/mksyscall_solaris.go346
1 files changed, 346 insertions, 0 deletions
diff --git a/dependencies/pkg/mod/golang.org/x/sys@v0.1.0/unix/mksyscall_solaris.go b/dependencies/pkg/mod/golang.org/x/sys@v0.1.0/unix/mksyscall_solaris.go
new file mode 100644
index 0000000..d5634b1
--- /dev/null
+++ b/dependencies/pkg/mod/golang.org/x/sys@v0.1.0/unix/mksyscall_solaris.go
@@ -0,0 +1,346 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build ignore
+// +build ignore
+
+/*
+ This program reads a file containing function prototypes
+ (like syscall_solaris.go) and generates system call bodies.
+ The prototypes are marked by lines beginning with "//sys"
+ and read like func declarations if //sys is replaced by func, but:
+ * The parameter lists must give a name for each argument.
+ This includes return parameters.
+ * The parameter lists must give a type for each argument:
+ the (x, y, z int) shorthand is not allowed.
+ * If the return parameter is an error number, it must be named err.
+ * If go func name needs to be different than its libc name,
+ * or the function is not in libc, name could be specified
+ * at the end, after "=" sign, like
+ //sys getsockopt(s int, level int, name int, val uintptr, vallen *_Socklen) (err error) = libsocket.getsockopt
+*/
+
+package main
+
+import (
+ "bufio"
+ "flag"
+ "fmt"
+ "os"
+ "regexp"
+ "strings"
+)
+
+var (
+ b32 = flag.Bool("b32", false, "32bit big-endian")
+ l32 = flag.Bool("l32", false, "32bit little-endian")
+ tags = flag.String("tags", "", "build tags")
+ illumos = flag.Bool("illumos", false, "illumos specific code generation")
+)
+
+// cmdLine returns this programs's commandline arguments
+func cmdLine() string {
+ return "go run mksyscall_solaris.go " + strings.Join(os.Args[1:], " ")
+}
+
+// goBuildTags returns build tags in the go:build format.
+func goBuildTags() string {
+ return strings.ReplaceAll(*tags, ",", " && ")
+}
+
+// plusBuildTags returns build tags in the +build format.
+func plusBuildTags() string {
+ return *tags
+}
+
+// Param is function parameter
+type Param struct {
+ Name string
+ Type string
+}
+
+// usage prints the program usage
+func usage() {
+ fmt.Fprintf(os.Stderr, "usage: go run mksyscall_solaris.go [-b32 | -l32] [-tags x,y] [file ...]\n")
+ os.Exit(1)
+}
+
+// parseParamList parses parameter list and returns a slice of parameters
+func parseParamList(list string) []string {
+ list = strings.TrimSpace(list)
+ if list == "" {
+ return []string{}
+ }
+ return regexp.MustCompile(`\s*,\s*`).Split(list, -1)
+}
+
+// parseParam splits a parameter into name and type
+func parseParam(p string) Param {
+ ps := regexp.MustCompile(`^(\S*) (\S*)$`).FindStringSubmatch(p)
+ if ps == nil {
+ fmt.Fprintf(os.Stderr, "malformed parameter: %s\n", p)
+ os.Exit(1)
+ }
+ return Param{ps[1], ps[2]}
+}
+
+func main() {
+ flag.Usage = usage
+ flag.Parse()
+ if len(flag.Args()) <= 0 {
+ fmt.Fprintf(os.Stderr, "no files to parse provided\n")
+ usage()
+ }
+
+ endianness := ""
+ if *b32 {
+ endianness = "big-endian"
+ } else if *l32 {
+ endianness = "little-endian"
+ }
+
+ pack := ""
+ text := ""
+ dynimports := ""
+ linknames := ""
+ var vars []string
+ for _, path := range flag.Args() {
+ file, err := os.Open(path)
+ if err != nil {
+ fmt.Fprintf(os.Stderr, err.Error())
+ os.Exit(1)
+ }
+ s := bufio.NewScanner(file)
+ for s.Scan() {
+ t := s.Text()
+ if p := regexp.MustCompile(`^package (\S+)$`).FindStringSubmatch(t); p != nil && pack == "" {
+ pack = p[1]
+ }
+ nonblock := regexp.MustCompile(`^\/\/sysnb\t`).FindStringSubmatch(t)
+ if regexp.MustCompile(`^\/\/sys\t`).FindStringSubmatch(t) == nil && nonblock == nil {
+ continue
+ }
+
+ // Line must be of the form
+ // func Open(path string, mode int, perm int) (fd int, err error)
+ // Split into name, in params, out params.
+ f := regexp.MustCompile(`^\/\/sys(nb)?\t(\w+)\(([^()]*)\)\s*(?:\(([^()]+)\))?\s*(?:=\s*(?:(\w*)\.)?(\w*))?$`).FindStringSubmatch(t)
+ if f == nil {
+ fmt.Fprintf(os.Stderr, "%s:%s\nmalformed //sys declaration\n", path, t)
+ os.Exit(1)
+ }
+ funct, inps, outps, modname, sysname := f[2], f[3], f[4], f[5], f[6]
+
+ // Split argument lists on comma.
+ in := parseParamList(inps)
+ out := parseParamList(outps)
+
+ inps = strings.Join(in, ", ")
+ outps = strings.Join(out, ", ")
+
+ // Try in vain to keep people from editing this file.
+ // The theory is that they jump into the middle of the file
+ // without reading the header.
+ text += "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n"
+
+ // So file name.
+ if modname == "" {
+ modname = "libc"
+ }
+
+ // System call name.
+ if sysname == "" {
+ sysname = funct
+ }
+
+ // System call pointer variable name.
+ sysvarname := fmt.Sprintf("proc%s", sysname)
+
+ strconvfunc := "BytePtrFromString"
+ strconvtype := "*byte"
+
+ sysname = strings.ToLower(sysname) // All libc functions are lowercase.
+
+ // Runtime import of function to allow cross-platform builds.
+ dynimports += fmt.Sprintf("//go:cgo_import_dynamic libc_%s %s \"%s.so\"\n", sysname, sysname, modname)
+ // Link symbol to proc address variable.
+ linknames += fmt.Sprintf("//go:linkname %s libc_%s\n", sysvarname, sysname)
+ // Library proc address variable.
+ vars = append(vars, sysvarname)
+
+ // Go function header.
+ outlist := strings.Join(out, ", ")
+ if outlist != "" {
+ outlist = fmt.Sprintf(" (%s)", outlist)
+ }
+ if text != "" {
+ text += "\n"
+ }
+ text += fmt.Sprintf("func %s(%s)%s {\n", funct, strings.Join(in, ", "), outlist)
+
+ // Check if err return available
+ errvar := ""
+ for _, param := range out {
+ p := parseParam(param)
+ if p.Type == "error" {
+ errvar = p.Name
+ continue
+ }
+ }
+
+ // Prepare arguments to Syscall.
+ var args []string
+ n := 0
+ for _, param := range in {
+ p := parseParam(param)
+ if regexp.MustCompile(`^\*`).FindStringSubmatch(p.Type) != nil {
+ args = append(args, "uintptr(unsafe.Pointer("+p.Name+"))")
+ } else if p.Type == "string" && errvar != "" {
+ text += fmt.Sprintf("\tvar _p%d %s\n", n, strconvtype)
+ text += fmt.Sprintf("\t_p%d, %s = %s(%s)\n", n, errvar, strconvfunc, p.Name)
+ text += fmt.Sprintf("\tif %s != nil {\n\t\treturn\n\t}\n", errvar)
+ args = append(args, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n))
+ n++
+ } else if p.Type == "string" {
+ fmt.Fprintf(os.Stderr, path+":"+funct+" uses string arguments, but has no error return\n")
+ text += fmt.Sprintf("\tvar _p%d %s\n", n, strconvtype)
+ text += fmt.Sprintf("\t_p%d, _ = %s(%s)\n", n, strconvfunc, p.Name)
+ args = append(args, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n))
+ n++
+ } else if s := regexp.MustCompile(`^\[\](.*)`).FindStringSubmatch(p.Type); s != nil {
+ // Convert slice into pointer, length.
+ // Have to be careful not to take address of &a[0] if len == 0:
+ // pass nil in that case.
+ text += fmt.Sprintf("\tvar _p%d *%s\n", n, s[1])
+ text += fmt.Sprintf("\tif len(%s) > 0 {\n\t\t_p%d = &%s[0]\n\t}\n", p.Name, n, p.Name)
+ args = append(args, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n), fmt.Sprintf("uintptr(len(%s))", p.Name))
+ n++
+ } else if p.Type == "int64" && endianness != "" {
+ if endianness == "big-endian" {
+ args = append(args, fmt.Sprintf("uintptr(%s>>32)", p.Name), fmt.Sprintf("uintptr(%s)", p.Name))
+ } else {
+ args = append(args, fmt.Sprintf("uintptr(%s)", p.Name), fmt.Sprintf("uintptr(%s>>32)", p.Name))
+ }
+ } else if p.Type == "bool" {
+ text += fmt.Sprintf("\tvar _p%d uint32\n", n)
+ text += fmt.Sprintf("\tif %s {\n\t\t_p%d = 1\n\t} else {\n\t\t_p%d = 0\n\t}\n", p.Name, n, n)
+ args = append(args, fmt.Sprintf("uintptr(_p%d)", n))
+ n++
+ } else {
+ args = append(args, fmt.Sprintf("uintptr(%s)", p.Name))
+ }
+ }
+ nargs := len(args)
+
+ // Determine which form to use; pad args with zeros.
+ asm := "sysvicall6"
+ if nonblock != nil {
+ asm = "rawSysvicall6"
+ }
+ if len(args) <= 6 {
+ for len(args) < 6 {
+ args = append(args, "0")
+ }
+ } else {
+ fmt.Fprintf(os.Stderr, "%s: too many arguments to system call\n", path)
+ os.Exit(1)
+ }
+
+ // Actual call.
+ arglist := strings.Join(args, ", ")
+ call := fmt.Sprintf("%s(uintptr(unsafe.Pointer(&%s)), %d, %s)", asm, sysvarname, nargs, arglist)
+
+ // Assign return values.
+ body := ""
+ ret := []string{"_", "_", "_"}
+ doErrno := false
+ for i := 0; i < len(out); i++ {
+ p := parseParam(out[i])
+ reg := ""
+ if p.Name == "err" {
+ reg = "e1"
+ ret[2] = reg
+ doErrno = true
+ } else {
+ reg = fmt.Sprintf("r%d", i)
+ ret[i] = reg
+ }
+ if p.Type == "bool" {
+ reg = fmt.Sprintf("%d != 0", reg)
+ }
+ if p.Type == "int64" && endianness != "" {
+ // 64-bit number in r1:r0 or r0:r1.
+ if i+2 > len(out) {
+ fmt.Fprintf(os.Stderr, "%s: not enough registers for int64 return\n", path)
+ os.Exit(1)
+ }
+ if endianness == "big-endian" {
+ reg = fmt.Sprintf("int64(r%d)<<32 | int64(r%d)", i, i+1)
+ } else {
+ reg = fmt.Sprintf("int64(r%d)<<32 | int64(r%d)", i+1, i)
+ }
+ ret[i] = fmt.Sprintf("r%d", i)
+ ret[i+1] = fmt.Sprintf("r%d", i+1)
+ }
+ if reg != "e1" {
+ body += fmt.Sprintf("\t%s = %s(%s)\n", p.Name, p.Type, reg)
+ }
+ }
+ if ret[0] == "_" && ret[1] == "_" && ret[2] == "_" {
+ text += fmt.Sprintf("\t%s\n", call)
+ } else {
+ text += fmt.Sprintf("\t%s, %s, %s := %s\n", ret[0], ret[1], ret[2], call)
+ }
+ text += body
+
+ if doErrno {
+ text += "\tif e1 != 0 {\n"
+ text += "\t\terr = e1\n"
+ text += "\t}\n"
+ }
+ text += "\treturn\n"
+ text += "}\n"
+ }
+ if err := s.Err(); err != nil {
+ fmt.Fprintf(os.Stderr, err.Error())
+ os.Exit(1)
+ }
+ file.Close()
+ }
+ imp := ""
+ if pack != "unix" {
+ imp = "import \"golang.org/x/sys/unix\"\n"
+ }
+
+ syscallimp := ""
+ if !*illumos {
+ syscallimp = "\"syscall\""
+ }
+
+ vardecls := "\t" + strings.Join(vars, ",\n\t")
+ vardecls += " syscallFunc"
+ fmt.Printf(srcTemplate, cmdLine(), goBuildTags(), plusBuildTags(), pack, syscallimp, imp, dynimports, linknames, vardecls, text)
+}
+
+const srcTemplate = `// %s
+// Code generated by the command above; see README.md. DO NOT EDIT.
+
+//go:build %s
+// +build %s
+
+package %s
+
+import (
+ "unsafe"
+ %s
+)
+%s
+%s
+%s
+var (
+%s
+)
+
+%s
+`
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-13 15:17:05 +0000