unix: replace "mksyscall_aix_ppc64.pl" script with a Go program
Port mksyscall_aix_ppc64.pl Perl script to mksyscall_aix_ppc64.go.
mkall.sh script is modified to run mksyscall.go. Running
mkall.sh does not generate any git diff besides the command
name in comments of generated files.
Updates golang/go#27779
Change-Id: Ie888c0df470dcfc75034faa12cf3422b2d426629
Reviewed-on: https://go-review.googlesource.com/c/158699
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
diff --git a/unix/mkall.sh b/unix/mkall.sh
index 76f9cdd..d74115a 100755
--- a/unix/mkall.sh
+++ b/unix/mkall.sh
@@ -67,7 +67,7 @@
;;
aix_ppc64)
mkerrors="$mkerrors -maix64"
- mksyscall="./mksyscall_aix_ppc64.pl -aix"
+ mksyscall="go run mksyscall_aix_ppc64.go -aix"
mktypes="GOARCH=$GOARCH go tool cgo -godefs"
;;
darwin_386)
diff --git a/unix/mksyscall_aix_ppc64.go b/unix/mksyscall_aix_ppc64.go
new file mode 100755
index 0000000..45b4429
--- /dev/null
+++ b/unix/mksyscall_aix_ppc64.go
@@ -0,0 +1,602 @@
+// 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.
+
+// +build ignore
+
+/*
+This program reads a file containing function prototypes
+(like syscall_aix.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
+
+
+This program will generate three files and handle both gc and gccgo implementation:
+ - zsyscall_aix_ppc64.go: the common part of each implementation (error handler, pointer creation)
+ - zsyscall_aix_ppc64_gc.go: gc part with //go_cgo_import_dynamic and a call to syscall6
+ - zsyscall_aix_ppc64_gccgo.go: gccgo part with C function and conversion to C type.
+
+ The generated code looks like this
+
+zsyscall_aix_ppc64.go
+func asyscall(...) (n int, err error) {
+ // Pointer Creation
+ r1, e1 := callasyscall(...)
+ // Type Conversion
+ // Error Handler
+ return
+}
+
+zsyscall_aix_ppc64_gc.go
+//go:cgo_import_dynamic libc_asyscall asyscall "libc.a/shr_64.o"
+//go:linkname libc_asyscall libc_asyscall
+var asyscall syscallFunc
+
+func callasyscall(...) (r1 uintptr, e1 Errno) {
+ r1, _, e1 = syscall6(uintptr(unsafe.Pointer(&libc_asyscall)), "nb_args", ... )
+ return
+}
+
+zsyscall_aix_ppc64_ggcgo.go
+
+// int asyscall(...)
+
+import "C"
+
+func callasyscall(...) (r1 uintptr, e1 Errno) {
+ r1 = uintptr(C.asyscall(...))
+ e1 = syscall.GetErrno()
+ return
+}
+*/
+
+package main
+
+import (
+ "bufio"
+ "flag"
+ "fmt"
+ "io/ioutil"
+ "os"
+ "regexp"
+ "strings"
+)
+
+var (
+ b32 = flag.Bool("b32", false, "32bit big-endian")
+ l32 = flag.Bool("l32", false, "32bit little-endian")
+ aix = flag.Bool("aix", false, "aix")
+ tags = flag.String("tags", "", "build tags")
+)
+
+// cmdLine returns this programs's commandline arguments
+func cmdLine() string {
+ return "go run mksyscall_aix_ppc64.go " + strings.Join(os.Args[1:], " ")
+}
+
+// buildTags returns build tags
+func buildTags() 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_aix_ppc64.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*)$`).FindStringSubmatch(p)
+ if ps == nil {
+ fmt.Fprintf(os.Stderr, "malformed parameter: %s\n", p)
+ os.Exit(1)
+ }
+ return Param{ps[1], ps[2]}
+}
+
+func main() {
+ flag.Usage = usage
+ flag.Parse()
+ if len(flag.Args()) <= 0 {
+ fmt.Fprintf(os.Stderr, "no files to parse provided\n")
+ usage()
+ }
+
+ endianness := ""
+ if *b32 {
+ endianness = "big-endian"
+ } else if *l32 {
+ endianness = "little-endian"
+ }
+
+ pack := ""
+ // GCCGO
+ textgccgo := ""
+ cExtern := "/*\n#include <stdint.h>\n"
+ // GC
+ textgc := ""
+ dynimports := ""
+ linknames := ""
+ var vars []string
+ // COMMON
+ textcommon := ""
+ for _, path := range flag.Args() {
+ file, err := os.Open(path)
+ if err != nil {
+ fmt.Fprintf(os.Stderr, err.Error())
+ os.Exit(1)
+ }
+ s := bufio.NewScanner(file)
+ for s.Scan() {
+ t := s.Text()
+ t = strings.TrimSpace(t)
+ t = regexp.MustCompile(`\s+`).ReplaceAllString(t, ` `)
+ if p := regexp.MustCompile(`^package (\S+)$`).FindStringSubmatch(t); p != nil && pack == "" {
+ pack = p[1]
+ }
+ nonblock := regexp.MustCompile(`^\/\/sysnb `).FindStringSubmatch(t)
+ if regexp.MustCompile(`^\/\/sys `).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)? (\w+)\(([^()]*)\)\s*(?:\(([^()]+)\))?\s*(?:=\s*(?:(\w*)\.)?(\w*))?$`).FindStringSubmatch(t)
+ if f == nil {
+ fmt.Fprintf(os.Stderr, "%s:%s\nmalformed //sys declaration\n", path, t)
+ os.Exit(1)
+ }
+ funct, inps, outps, modname, sysname := f[2], f[3], f[4], f[5], f[6]
+
+ // Split argument lists on comma.
+ in := parseParamList(inps)
+ out := parseParamList(outps)
+
+ inps = strings.Join(in, ", ")
+ outps = strings.Join(out, ", ")
+
+ if sysname == "" {
+ sysname = funct
+ }
+
+ onlyCommon := false
+ if funct == "readlen" || funct == "writelen" || funct == "FcntlInt" || funct == "FcntlFlock" {
+ // This function call another syscall which is already implemented.
+ // Therefore, the gc and gccgo part must not be generated.
+ onlyCommon = true
+ }
+
+ // Try in vain to keep people from editing this file.
+ // The theory is that they jump into the middle of the file
+ // without reading the header.
+
+ textcommon += "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n"
+ if !onlyCommon {
+ textgccgo += "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n"
+ textgc += "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n"
+ }
+
+ // Check if value return, err return available
+ errvar := ""
+ rettype := ""
+ for _, param := range out {
+ p := parseParam(param)
+ if p.Type == "error" {
+ errvar = p.Name
+ } else {
+ rettype = p.Type
+ }
+ }
+
+ sysname = regexp.MustCompile(`([a-z])([A-Z])`).ReplaceAllString(sysname, `${1}_$2`)
+ sysname = strings.ToLower(sysname) // All libc functions are lowercase.
+
+ // GCCGO Prototype return type
+ cRettype := ""
+ if rettype == "unsafe.Pointer" {
+ cRettype = "uintptr_t"
+ } else if rettype == "uintptr" {
+ cRettype = "uintptr_t"
+ } else if regexp.MustCompile(`^_`).FindStringSubmatch(rettype) != nil {
+ cRettype = "uintptr_t"
+ } else if rettype == "int" {
+ cRettype = "int"
+ } else if rettype == "int32" {
+ cRettype = "int"
+ } else if rettype == "int64" {
+ cRettype = "long long"
+ } else if rettype == "uint32" {
+ cRettype = "unsigned int"
+ } else if rettype == "uint64" {
+ cRettype = "unsigned long long"
+ } else {
+ cRettype = "int"
+ }
+ if sysname == "exit" {
+ cRettype = "void"
+ }
+
+ // GCCGO Prototype arguments type
+ var cIn []string
+ for i, param := range in {
+ p := parseParam(param)
+ if regexp.MustCompile(`^\*`).FindStringSubmatch(p.Type) != nil {
+ cIn = append(cIn, "uintptr_t")
+ } else if p.Type == "string" {
+ cIn = append(cIn, "uintptr_t")
+ } else if regexp.MustCompile(`^\[\](.*)`).FindStringSubmatch(p.Type) != nil {
+ cIn = append(cIn, "uintptr_t", "size_t")
+ } else if p.Type == "unsafe.Pointer" {
+ cIn = append(cIn, "uintptr_t")
+ } else if p.Type == "uintptr" {
+ cIn = append(cIn, "uintptr_t")
+ } else if regexp.MustCompile(`^_`).FindStringSubmatch(p.Type) != nil {
+ cIn = append(cIn, "uintptr_t")
+ } else if p.Type == "int" {
+ if (i == 0 || i == 2) && funct == "fcntl" {
+ // These fcntl arguments needs to be uintptr to be able to call FcntlInt and FcntlFlock
+ cIn = append(cIn, "uintptr_t")
+ } else {
+ cIn = append(cIn, "int")
+ }
+
+ } else if p.Type == "int32" {
+ cIn = append(cIn, "int")
+ } else if p.Type == "int64" {
+ cIn = append(cIn, "long long")
+ } else if p.Type == "uint32" {
+ cIn = append(cIn, "unsigned int")
+ } else if p.Type == "uint64" {
+ cIn = append(cIn, "unsigned long long")
+ } else {
+ cIn = append(cIn, "int")
+ }
+ }
+
+ if !onlyCommon {
+ // GCCGO Prototype Generation
+ // Imports of system calls from libc
+ cExtern += fmt.Sprintf("%s %s", cRettype, sysname)
+ cIn := strings.Join(cIn, ", ")
+ cExtern += fmt.Sprintf("(%s);\n", cIn)
+ }
+ // GC Library name
+ if modname == "" {
+ modname = "libc.a/shr_64.o"
+ } else {
+ fmt.Fprintf(os.Stderr, "%s: only syscall using libc are available\n", funct)
+ os.Exit(1)
+ }
+ sysvarname := fmt.Sprintf("libc_%s", sysname)
+
+ if !onlyCommon {
+ // GC Runtime import of function to allow cross-platform builds.
+ dynimports += fmt.Sprintf("//go:cgo_import_dynamic %s %s \"%s\"\n", sysvarname, sysname, modname)
+ // GC Link symbol to proc address variable.
+ linknames += fmt.Sprintf("//go:linkname %s %s\n", sysvarname, sysvarname)
+ // GC Library proc address variable.
+ vars = append(vars, sysvarname)
+ }
+
+ strconvfunc := "BytePtrFromString"
+ strconvtype := "*byte"
+
+ // Go function header.
+ if outps != "" {
+ outps = fmt.Sprintf(" (%s)", outps)
+ }
+ if textcommon != "" {
+ textcommon += "\n"
+ }
+
+ textcommon += fmt.Sprintf("func %s(%s)%s {\n", funct, strings.Join(in, ", "), outps)
+
+ // Prepare arguments tocall.
+ var argscommon []string // Arguments in the common part
+ var argscall []string // Arguments for call prototype
+ var argsgc []string // Arguments for gc call (with syscall6)
+ var argsgccgo []string // Arguments for gccgo call (with C.name_of_syscall)
+ n := 0
+ argN := 0
+ for _, param := range in {
+ p := parseParam(param)
+ if regexp.MustCompile(`^\*`).FindStringSubmatch(p.Type) != nil {
+ argscommon = append(argscommon, fmt.Sprintf("uintptr(unsafe.Pointer(%s))", p.Name))
+ argscall = append(argscall, fmt.Sprintf("%s uintptr", p.Name))
+ argsgc = append(argsgc, p.Name)
+ argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(%s)", p.Name))
+ } else if p.Type == "string" && errvar != "" {
+ textcommon += fmt.Sprintf("\tvar _p%d %s\n", n, strconvtype)
+ textcommon += fmt.Sprintf("\t_p%d, %s = %s(%s)\n", n, errvar, strconvfunc, p.Name)
+ textcommon += fmt.Sprintf("\tif %s != nil {\n\t\treturn\n\t}\n", errvar)
+
+ argscommon = append(argscommon, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n))
+ argscall = append(argscall, fmt.Sprintf("_p%d uintptr ", n))
+ argsgc = append(argsgc, fmt.Sprintf("_p%d", n))
+ argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(_p%d)", n))
+ n++
+ } else if p.Type == "string" {
+ fmt.Fprintf(os.Stderr, path+":"+funct+" uses string arguments, but has no error return\n")
+ textcommon += fmt.Sprintf("\tvar _p%d %s\n", n, strconvtype)
+ textcommon += fmt.Sprintf("\t_p%d, %s = %s(%s)\n", n, errvar, strconvfunc, p.Name)
+ textcommon += fmt.Sprintf("\tif %s != nil {\n\t\treturn\n\t}\n", errvar)
+
+ argscommon = append(argscommon, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n))
+ argscall = append(argscall, fmt.Sprintf("_p%d uintptr", n))
+ argsgc = append(argsgc, fmt.Sprintf("_p%d", n))
+ argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(_p%d)", n))
+ n++
+ } else if m := regexp.MustCompile(`^\[\](.*)`).FindStringSubmatch(p.Type); m != 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.
+ textcommon += fmt.Sprintf("\tvar _p%d *%s\n", n, m[1])
+ textcommon += fmt.Sprintf("\tif len(%s) > 0 {\n\t\t_p%d = &%s[0]\n\t}\n", p.Name, n, p.Name)
+ argscommon = append(argscommon, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n), fmt.Sprintf("len(%s)", p.Name))
+ argscall = append(argscall, fmt.Sprintf("_p%d uintptr", n), fmt.Sprintf("_lenp%d int", n))
+ argsgc = append(argsgc, fmt.Sprintf("_p%d", n), fmt.Sprintf("uintptr(_lenp%d)", n))
+ argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(_p%d)", n), fmt.Sprintf("C.size_t(_lenp%d)", n))
+ n++
+ } else if p.Type == "int64" && endianness != "" {
+ fmt.Fprintf(os.Stderr, path+":"+funct+" uses int64 with 32 bits mode. Case not yet implemented\n")
+ } else if p.Type == "bool" {
+ fmt.Fprintf(os.Stderr, path+":"+funct+" uses bool. Case not yet implemented\n")
+ } else if regexp.MustCompile(`^_`).FindStringSubmatch(p.Type) != nil || p.Type == "unsafe.Pointer" {
+ argscommon = append(argscommon, fmt.Sprintf("uintptr(%s)", p.Name))
+ argscall = append(argscall, fmt.Sprintf("%s uintptr", p.Name))
+ argsgc = append(argsgc, p.Name)
+ argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(%s)", p.Name))
+ } else if p.Type == "int" {
+ if (argN == 0 || argN == 2) && ((funct == "fcntl") || (funct == "FcntlInt") || (funct == "FcntlFlock")) {
+ // These fcntl arguments need to be uintptr to be able to call FcntlInt and FcntlFlock
+ argscommon = append(argscommon, fmt.Sprintf("uintptr(%s)", p.Name))
+ argscall = append(argscall, fmt.Sprintf("%s uintptr", p.Name))
+ argsgc = append(argsgc, p.Name)
+ argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(%s)", p.Name))
+
+ } else {
+ argscommon = append(argscommon, p.Name)
+ argscall = append(argscall, fmt.Sprintf("%s int", p.Name))
+ argsgc = append(argsgc, fmt.Sprintf("uintptr(%s)", p.Name))
+ argsgccgo = append(argsgccgo, fmt.Sprintf("C.int(%s)", p.Name))
+ }
+ } else if p.Type == "int32" {
+ argscommon = append(argscommon, p.Name)
+ argscall = append(argscall, fmt.Sprintf("%s int32", p.Name))
+ argsgc = append(argsgc, fmt.Sprintf("uintptr(%s)", p.Name))
+ argsgccgo = append(argsgccgo, fmt.Sprintf("C.int(%s)", p.Name))
+ } else if p.Type == "int64" {
+ argscommon = append(argscommon, p.Name)
+ argscall = append(argscall, fmt.Sprintf("%s int64", p.Name))
+ argsgc = append(argsgc, fmt.Sprintf("uintptr(%s)", p.Name))
+ argsgccgo = append(argsgccgo, fmt.Sprintf("C.longlong(%s)", p.Name))
+ } else if p.Type == "uint32" {
+ argscommon = append(argscommon, p.Name)
+ argscall = append(argscall, fmt.Sprintf("%s uint32", p.Name))
+ argsgc = append(argsgc, fmt.Sprintf("uintptr(%s)", p.Name))
+ argsgccgo = append(argsgccgo, fmt.Sprintf("C.uint(%s)", p.Name))
+ } else if p.Type == "uint64" {
+ argscommon = append(argscommon, p.Name)
+ argscall = append(argscall, fmt.Sprintf("%s uint64", p.Name))
+ argsgc = append(argsgc, fmt.Sprintf("uintptr(%s)", p.Name))
+ argsgccgo = append(argsgccgo, fmt.Sprintf("C.ulonglong(%s)", p.Name))
+ } else if p.Type == "uintptr" {
+ argscommon = append(argscommon, p.Name)
+ argscall = append(argscall, fmt.Sprintf("%s uintptr", p.Name))
+ argsgc = append(argsgc, p.Name)
+ argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(%s)", p.Name))
+ } else {
+ argscommon = append(argscommon, fmt.Sprintf("int(%s)", p.Name))
+ argscall = append(argscall, fmt.Sprintf("%s int", p.Name))
+ argsgc = append(argsgc, fmt.Sprintf("uintptr(%s)", p.Name))
+ argsgccgo = append(argsgccgo, fmt.Sprintf("C.int(%s)", p.Name))
+ }
+ argN++
+ }
+ nargs := len(argsgc)
+
+ // COMMON function generation
+ argscommonlist := strings.Join(argscommon, ", ")
+ callcommon := fmt.Sprintf("call%s(%s)", sysname, argscommonlist)
+ ret := []string{"_", "_"}
+ body := ""
+ doErrno := false
+ for i := 0; i < len(out); i++ {
+ p := parseParam(out[i])
+ reg := ""
+ if p.Name == "err" {
+ reg = "e1"
+ ret[1] = reg
+ doErrno = true
+ } else {
+ reg = "r0"
+ ret[0] = reg
+ }
+ if p.Type == "bool" {
+ reg = fmt.Sprintf("%s != 0", reg)
+ }
+ if reg != "e1" {
+ body += fmt.Sprintf("\t%s = %s(%s)\n", p.Name, p.Type, reg)
+ }
+ }
+ if ret[0] == "_" && ret[1] == "_" {
+ textcommon += fmt.Sprintf("\t%s\n", callcommon)
+ } else {
+ textcommon += fmt.Sprintf("\t%s, %s := %s\n", ret[0], ret[1], callcommon)
+ }
+ textcommon += body
+
+ if doErrno {
+ textcommon += "\tif e1 != 0 {\n"
+ textcommon += "\t\terr = errnoErr(e1)\n"
+ textcommon += "\t}\n"
+ }
+ textcommon += "\treturn\n"
+ textcommon += "}\n"
+
+ if onlyCommon {
+ continue
+ }
+
+ // CALL Prototype
+ callProto := fmt.Sprintf("func call%s(%s) (r1 uintptr, e1 Errno) {\n", sysname, strings.Join(argscall, ", "))
+
+ // GC function generation
+ asm := "syscall6"
+ if nonblock != nil {
+ asm = "rawSyscall6"
+ }
+
+ if len(argsgc) <= 6 {
+ for len(argsgc) < 6 {
+ argsgc = append(argsgc, "0")
+ }
+ } else {
+ fmt.Fprintf(os.Stderr, "%s: too many arguments to system call", funct)
+ os.Exit(1)
+ }
+ argsgclist := strings.Join(argsgc, ", ")
+ callgc := fmt.Sprintf("%s(uintptr(unsafe.Pointer(&%s)), %d, %s)", asm, sysvarname, nargs, argsgclist)
+
+ textgc += callProto
+ textgc += fmt.Sprintf("\tr1, _, e1 = %s\n", callgc)
+ textgc += "\treturn\n}\n"
+
+ // GCCGO function generation
+ argsgccgolist := strings.Join(argsgccgo, ", ")
+ callgccgo := fmt.Sprintf("C.%s(%s)", sysname, argsgccgolist)
+ textgccgo += callProto
+ textgccgo += fmt.Sprintf("\tr1 = uintptr(%s)\n", callgccgo)
+ textgccgo += "\te1 = syscall.GetErrno()\n"
+ textgccgo += "\treturn\n}\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"
+
+ }
+
+ // Print zsyscall_aix_ppc64.go
+ err := ioutil.WriteFile("zsyscall_aix_ppc64.go",
+ []byte(fmt.Sprintf(srcTemplate1, cmdLine(), buildTags(), pack, imp, textcommon)),
+ 0644)
+ if err != nil {
+ fmt.Fprintf(os.Stderr, err.Error())
+ os.Exit(1)
+ }
+
+ // Print zsyscall_aix_ppc64_gc.go
+ vardecls := "\t" + strings.Join(vars, ",\n\t")
+ vardecls += " syscallFunc"
+ err = ioutil.WriteFile("zsyscall_aix_ppc64_gc.go",
+ []byte(fmt.Sprintf(srcTemplate2, cmdLine(), buildTags(), pack, imp, dynimports, linknames, vardecls, textgc)),
+ 0644)
+ if err != nil {
+ fmt.Fprintf(os.Stderr, err.Error())
+ os.Exit(1)
+ }
+
+ // Print zsyscall_aix_ppc64_gccgo.go
+ err = ioutil.WriteFile("zsyscall_aix_ppc64_gccgo.go",
+ []byte(fmt.Sprintf(srcTemplate3, cmdLine(), buildTags(), pack, cExtern, imp, textgccgo)),
+ 0644)
+ if err != nil {
+ fmt.Fprintf(os.Stderr, err.Error())
+ os.Exit(1)
+ }
+}
+
+const srcTemplate1 = `// %s
+// Code generated by the command above; see README.md. DO NOT EDIT.
+
+// +build %s
+
+package %s
+
+import (
+ "unsafe"
+)
+
+
+%s
+
+%s
+`
+const srcTemplate2 = `// %s
+// Code generated by the command above; see README.md. DO NOT EDIT.
+
+// +build %s
+// +build !gccgo
+
+package %s
+
+import (
+ "unsafe"
+)
+%s
+%s
+%s
+type syscallFunc uintptr
+
+var (
+%s
+)
+
+// Implemented in runtime/syscall_aix.go.
+func rawSyscall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
+func syscall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
+
+%s
+`
+const srcTemplate3 = `// %s
+// Code generated by the command above; see README.md. DO NOT EDIT.
+
+// +build %s
+// +build gccgo
+
+package %s
+
+%s
+*/
+import "C"
+import (
+ "syscall"
+)
+
+
+%s
+
+%s
+`
diff --git a/unix/mksyscall_aix_ppc64.pl b/unix/mksyscall_aix_ppc64.pl
deleted file mode 100755
index 53df26b..0000000
--- a/unix/mksyscall_aix_ppc64.pl
+++ /dev/null
@@ -1,579 +0,0 @@
-#!/usr/bin/env perl
-# Copyright 2018 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.
-
-# This program reads a file containing function prototypes
-# (like syscall_aix.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
-
-# This program will generate three files and handle both gc and gccgo implementation:
-# - zsyscall_aix_ppc64.go: the common part of each implementation (error handler, pointer creation)
-# - zsyscall_aix_ppc64_gc.go: gc part with //go_cgo_import_dynamic and a call to syscall6
-# - zsyscall_aix_ppc64_gccgo.go: gccgo part with C function and conversion to C type.
-
-# The generated code looks like this
-#
-# zsyscall_aix_ppc64.go
-# func asyscall(...) (n int, err error) {
-# // Pointer Creation
-# r1, e1 := callasyscall(...)
-# // Type Conversion
-# // Error Handler
-# return
-# }
-#
-# zsyscall_aix_ppc64_gc.go
-# //go:cgo_import_dynamic libc_asyscall asyscall "libc.a/shr_64.o"
-# //go:linkname libc_asyscall libc_asyscall
-# var asyscall syscallFunc
-#
-# func callasyscall(...) (r1 uintptr, e1 Errno) {
-# r1, _, e1 = syscall6(uintptr(unsafe.Pointer(&libc_asyscall)), "nb_args", ... )
-# return
-# }
-#
-# zsyscall_aix_ppc64_ggcgo.go
-# /*
-# int asyscall(...)
-#
-# */
-# import "C"
-#
-# func callasyscall(...) (r1 uintptr, e1 Errno) {
-# r1 = uintptr(C.asyscall(...))
-# e1 = syscall.GetErrno()
-# return
-# }
-
-
-
-use strict;
-
-my $cmdline = "mksyscall_aix_ppc64.pl " . join(' ', @ARGV);
-my $errors = 0;
-my $_32bit = "";
-my $tags = ""; # build tags
-my $aix = 0;
-my $solaris = 0;
-
-binmode STDOUT;
-
-if($ARGV[0] eq "-b32") {
- $_32bit = "big-endian";
- shift;
-} elsif($ARGV[0] eq "-l32") {
- $_32bit = "little-endian";
- shift;
-}
-if($ARGV[0] eq "-aix") {
- $aix = 1;
- shift;
-}
-if($ARGV[0] eq "-tags") {
- shift;
- $tags = $ARGV[0];
- shift;
-}
-
-if($ARGV[0] =~ /^-/) {
- print STDERR "usage: mksyscall_aix.pl [-b32 | -l32] [-tags x,y] [file ...]\n";
- exit 1;
-}
-
-sub parseparamlist($) {
- my ($list) = @_;
- $list =~ s/^\s*//;
- $list =~ s/\s*$//;
- if($list eq "") {
- return ();
- }
- return split(/\s*,\s*/, $list);
-}
-
-sub parseparam($) {
- my ($p) = @_;
- if($p !~ /^(\S*) (\S*)$/) {
- print STDERR "$ARGV:$.: malformed parameter: $p\n";
- $errors = 1;
- return ("xx", "int");
- }
- return ($1, $2);
-}
-
-my $package = "";
-# GCCGO
-my $textgccgo = "";
-my $c_extern = "/*\n#include <stdint.h>\n";
-# GC
-my $textgc = "";
-my $dynimports = "";
-my $linknames = "";
-my @vars = ();
-# COMMUN
-my $textcommon = "";
-
-while(<>) {
- chomp;
- s/\s+/ /g;
- s/^\s+//;
- s/\s+$//;
- $package = $1 if !$package && /^package (\S+)$/;
- my $nonblock = /^\/\/sysnb /;
- next if !/^\/\/sys / && !$nonblock;
-
- # 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.
- if(!/^\/\/sys(nb)? (\w+)\(([^()]*)\)\s*(?:\(([^()]+)\))?\s*(?:=\s*(?:(\w*)\.)?(\w*))?$/) {
- print STDERR "$ARGV:$.: malformed //sys declaration\n";
- $errors = 1;
- next;
- }
- my ($nb, $func, $in, $out, $modname, $sysname) = ($1, $2, $3, $4, $5, $6);
-
- # Split argument lists on comma.
- my @in = parseparamlist($in);
- my @out = parseparamlist($out);
-
- $in = join(', ', @in);
- $out = join(', ', @out);
-
- if($sysname eq "") {
- $sysname = "$func";
- }
-
- my $onlyCommon = 0;
- if ($func eq "readlen" || $func eq "writelen" || $func eq "FcntlInt" || $func eq "FcntlFlock") {
- # This function call another syscall which is already implemented.
- # Therefore, the gc and gccgo part must not be generated.
- $onlyCommon = 1
- }
-
- # 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.
-
- $textcommon .= "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n";
- if (!$onlyCommon) {
- $textgccgo .= "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n";
- $textgc .= "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n";
- }
-
-
- # Check if value return, err return available
- my $errvar = "";
- my $retvar = "";
- my $rettype = "";
- foreach my $p (@out) {
- my ($name, $type) = parseparam($p);
- if($type eq "error") {
- $errvar = $name;
- } else {
- $retvar = $name;
- $rettype = $type;
- }
- }
-
-
- $sysname =~ s/([a-z])([A-Z])/${1}_$2/g;
- $sysname =~ y/A-Z/a-z/; # All libc functions are lowercase.
-
- # GCCGO Prototype return type
- my $C_rettype = "";
- if($rettype eq "unsafe.Pointer") {
- $C_rettype = "uintptr_t";
- } elsif($rettype eq "uintptr") {
- $C_rettype = "uintptr_t";
- } elsif($rettype =~ /^_/) {
- $C_rettype = "uintptr_t";
- } elsif($rettype eq "int") {
- $C_rettype = "int";
- } elsif($rettype eq "int32") {
- $C_rettype = "int";
- } elsif($rettype eq "int64") {
- $C_rettype = "long long";
- } elsif($rettype eq "uint32") {
- $C_rettype = "unsigned int";
- } elsif($rettype eq "uint64") {
- $C_rettype = "unsigned long long";
- } else {
- $C_rettype = "int";
- }
- if($sysname eq "exit") {
- $C_rettype = "void";
- }
-
- # GCCGO Prototype arguments type
- my @c_in = ();
- foreach my $i (0 .. $#in) {
- my ($name, $type) = parseparam($in[$i]);
- if($type =~ /^\*/) {
- push @c_in, "uintptr_t";
- } elsif($type eq "string") {
- push @c_in, "uintptr_t";
- } elsif($type =~ /^\[\](.*)/) {
- push @c_in, "uintptr_t", "size_t";
- } elsif($type eq "unsafe.Pointer") {
- push @c_in, "uintptr_t";
- } elsif($type eq "uintptr") {
- push @c_in, "uintptr_t";
- } elsif($type =~ /^_/) {
- push @c_in, "uintptr_t";
- } elsif($type eq "int") {
- if (($i == 0 || $i == 2) && $func eq "fcntl"){
- # These fcntl arguments needs to be uintptr to be able to call FcntlInt and FcntlFlock
- push @c_in, "uintptr_t";
- } else {
- push @c_in, "int";
- }
- } elsif($type eq "int32") {
- push @c_in, "int";
- } elsif($type eq "int64") {
- push @c_in, "long long";
- } elsif($type eq "uint32") {
- push @c_in, "unsigned int";
- } elsif($type eq "uint64") {
- push @c_in, "unsigned long long";
- } else {
- push @c_in, "int";
- }
- }
-
- if (!$onlyCommon){
- # GCCGO Prototype Generation
- # Imports of system calls from libc
- $c_extern .= "$C_rettype $sysname";
- my $c_in = join(', ', @c_in);
- $c_extern .= "($c_in);\n";
- }
-
- # GC Library name
- if($modname eq "") {
- $modname = "libc.a/shr_64.o";
- } else {
- print STDERR "$func: only syscall using libc are available\n";
- $errors = 1;
- next;
- }
- my $sysvarname = "libc_${sysname}";
-
- if (!$onlyCommon){
- # GC Runtime import of function to allow cross-platform builds.
- $dynimports .= "//go:cgo_import_dynamic ${sysvarname} ${sysname} \"$modname\"\n";
- # GC Link symbol to proc address variable.
- $linknames .= "//go:linkname ${sysvarname} ${sysvarname}\n";
- # GC Library proc address variable.
- push @vars, $sysvarname;
- }
-
- my $strconvfunc ="BytePtrFromString";
- my $strconvtype = "*byte";
-
- # Go function header.
- if($out ne "") {
- $out = " ($out)";
- }
- if($textcommon ne "") {
- $textcommon .= "\n"
- }
-
- $textcommon .= sprintf "func %s(%s)%s {\n", $func, join(', ', @in), $out ;
-
- # Prepare arguments to call.
- my @argscommun = (); # Arguments in the commun part
- my @argscall = (); # Arguments for call prototype
- my @argsgc = (); # Arguments for gc call (with syscall6)
- my @argsgccgo = (); # Arguments for gccgo call (with C.name_of_syscall)
- my $n = 0;
- my $arg_n = 0;
- foreach my $p (@in) {
- my ($name, $type) = parseparam($p);
- if($type =~ /^\*/) {
- push @argscommun, "uintptr(unsafe.Pointer($name))";
- push @argscall, "$name uintptr";
- push @argsgc, "$name";
- push @argsgccgo, "C.uintptr_t($name)";
- } elsif($type eq "string" && $errvar ne "") {
- $textcommon .= "\tvar _p$n $strconvtype\n";
- $textcommon .= "\t_p$n, $errvar = $strconvfunc($name)\n";
- $textcommon .= "\tif $errvar != nil {\n\t\treturn\n\t}\n";
-
- push @argscommun, "uintptr(unsafe.Pointer(_p$n))";
- push @argscall, "_p$n uintptr ";
- push @argsgc, "_p$n";
- push @argsgccgo, "C.uintptr_t(_p$n)";
- $n++;
- } elsif($type eq "string") {
- print STDERR "$ARGV:$.: $func uses string arguments, but has no error return\n";
- $textcommon .= "\tvar _p$n $strconvtype\n";
- $textcommon .= "\t_p$n, $errvar = $strconvfunc($name)\n";
- $textcommon .= "\tif $errvar != nil {\n\t\treturn\n\t}\n";
-
- push @argscommun, "uintptr(unsafe.Pointer(_p$n))";
- push @argscall, "_p$n uintptr";
- push @argsgc, "_p$n";
- push @argsgccgo, "C.uintptr_t(_p$n)";
- $n++;
- } elsif($type =~ /^\[\](.*)/) {
- # Convert slice into pointer, length.
- # Have to be careful not to take address of &a[0] if len == 0:
- # pass nil in that case.
- $textcommon .= "\tvar _p$n *$1\n";
- $textcommon .= "\tif len($name) > 0 {\n\t\t_p$n = \&$name\[0]\n\t}\n";
- push @argscommun, "uintptr(unsafe.Pointer(_p$n))", "len($name)";
- push @argscall, "_p$n uintptr", "_lenp$n int";
- push @argsgc, "_p$n", "uintptr(_lenp$n)";
- push @argsgccgo, "C.uintptr_t(_p$n)", "C.size_t(_lenp$n)";
- $n++;
- } elsif($type eq "int64" && $_32bit ne "") {
- print STDERR "$ARGV:$.: $func uses int64 with 32 bits mode. Case not yet implemented\n";
- # if($_32bit eq "big-endian") {
- # push @args, "uintptr($name >> 32)", "uintptr($name)";
- # } else {
- # push @args, "uintptr($name)", "uintptr($name >> 32)";
- # }
- # $n++;
- } elsif($type eq "bool") {
- print STDERR "$ARGV:$.: $func uses bool. Case not yet implemented\n";
- # $text .= "\tvar _p$n uint32\n";
- # $text .= "\tif $name {\n\t\t_p$n = 1\n\t} else {\n\t\t_p$n = 0\n\t}\n";
- # push @args, "_p$n";
- # $n++;
- } elsif($type =~ /^_/ ||$type eq "unsafe.Pointer") {
- push @argscommun, "uintptr($name)";
- push @argscall, "$name uintptr";
- push @argsgc, "$name";
- push @argsgccgo, "C.uintptr_t($name)";
- } elsif($type eq "int") {
- if (($arg_n == 0 || $arg_n == 2) && ($func eq "fcntl" || $func eq "FcntlInt" || $func eq "FcntlFlock")) {
- # These fcntl arguments need to be uintptr to be able to call FcntlInt and FcntlFlock
- push @argscommun, "uintptr($name)";
- push @argscall, "$name uintptr";
- push @argsgc, "$name";
- push @argsgccgo, "C.uintptr_t($name)";
- } else {
- push @argscommun, "$name";
- push @argscall, "$name int";
- push @argsgc, "uintptr($name)";
- push @argsgccgo, "C.int($name)";
- }
- } elsif($type eq "int32") {
- push @argscommun, "$name";
- push @argscall, "$name int32";
- push @argsgc, "uintptr($name)";
- push @argsgccgo, "C.int($name)";
- } elsif($type eq "int64") {
- push @argscommun, "$name";
- push @argscall, "$name int64";
- push @argsgc, "uintptr($name)";
- push @argsgccgo, "C.longlong($name)";
- } elsif($type eq "uint32") {
- push @argscommun, "$name";
- push @argscall, "$name uint32";
- push @argsgc, "uintptr($name)";
- push @argsgccgo, "C.uint($name)";
- } elsif($type eq "uint64") {
- push @argscommun, "$name";
- push @argscall, "$name uint64";
- push @argsgc, "uintptr($name)";
- push @argsgccgo, "C.ulonglong($name)";
- } elsif($type eq "uintptr") {
- push @argscommun, "$name";
- push @argscall, "$name uintptr";
- push @argsgc, "$name";
- push @argsgccgo, "C.uintptr_t($name)";
- } else {
- push @argscommun, "int($name)";
- push @argscall, "$name int";
- push @argsgc, "uintptr($name)";
- push @argsgccgo, "C.int($name)";
- }
- $arg_n++;
- }
- my $nargs = @argsgc;
-
- # COMMUN function generation
- my $argscommun = join(', ', @argscommun);
- my $callcommun = "call$sysname($argscommun)";
- my @ret = ("_", "_");
- my $body = "";
- my $do_errno = 0;
- for(my $i=0; $i<@out; $i++) {
- my $p = $out[$i];
- my ($name, $type) = parseparam($p);
- my $reg = "";
- if($name eq "err") {
- $reg = "e1";
- $ret[1] = $reg;
- $do_errno = 1;
- } else {
- $reg = "r0";
- $ret[0] = $reg;
- }
- if($type eq "bool") {
- $reg = "$reg != 0";
- }
- if($reg ne "e1") {
- $body .= "\t$name = $type($reg)\n";
- }
- }
- if ($ret[0] eq "_" && $ret[1] eq "_") {
- $textcommon .= "\t$callcommun\n";
- } else {
- $textcommon .= "\t$ret[0], $ret[1] := $callcommun\n";
- }
- $textcommon .= $body;
-
- if ($do_errno) {
- $textcommon .= "\tif e1 != 0 {\n";
- $textcommon .= "\t\terr = errnoErr(e1)\n";
- $textcommon .= "\t}\n";
- }
- $textcommon .= "\treturn\n";
- $textcommon .= "}\n";
-
- if ($onlyCommon){
- next
- }
- # CALL Prototype
- my $callProto = sprintf "func call%s(%s) (r1 uintptr, e1 Errno) {\n", $sysname, join(', ', @argscall);
-
- # GC function generation
- my $asm = "syscall6";
- if ($nonblock) {
- $asm = "rawSyscall6";
- }
-
- if(@argsgc <= 6) {
- while(@argsgc < 6) {
- push @argsgc, "0";
- }
- } else {
- print STDERR "$ARGV:$.: too many arguments to system call\n";
- }
- my $argsgc = join(', ', @argsgc);
- my $callgc = "$asm(uintptr(unsafe.Pointer(&$sysvarname)), $nargs, $argsgc)";
-
- $textgc .= $callProto;
- $textgc .= "\tr1, _, e1 = $callgc\n";
- $textgc .= "\treturn\n}\n";
-
- # GCCGO function generation
- my $argsgccgo = join(', ', @argsgccgo);
- my $callgccgo = "C.$sysname($argsgccgo)";
- $textgccgo .= $callProto;
- $textgccgo .= "\tr1 = uintptr($callgccgo)\n";
- $textgccgo .= "\te1 = syscall.GetErrno()\n";
- $textgccgo .= "\treturn\n}\n";
-}
-
-if($errors) {
- exit 1;
-}
-
-# Print zsyscall_aix_ppc64.go
-open(my $fcommun, '>', 'zsyscall_aix_ppc64.go');
-my $tofcommun = <<EOF;
-// $cmdline
-// Code generated by the command above; see README.md. DO NOT EDIT.
-
-// +build $tags
-
-package $package
-
-import (
- "unsafe"
-)
-
-EOF
-
-$tofcommun .= "import \"golang.org/x/sys/unix\"\n" if $package ne "unix";
-
-$tofcommun .=<<EOF;
-
-$textcommon
-EOF
-print $fcommun $tofcommun;
-
-
-# Print zsyscall_aix_ppc64_gc.go
-open(my $fgc, '>', 'zsyscall_aix_ppc64_gc.go');
-my $tofgc = <<EOF;
-// $cmdline
-// Code generated by the command above; see README.md. DO NOT EDIT.
-
-// +build $tags
-// +build !gccgo
-
-package $package
-
-import (
- "unsafe"
-)
-
-
-EOF
-
-$tofgc .= "import \"golang.org/x/sys/unix\"\n" if $package ne "unix";
-
-my $vardecls = "\t" . join(",\n\t", @vars);
-$vardecls .= " syscallFunc";
-
-$tofgc .=<<EOF;
-$dynimports
-$linknames
-type syscallFunc uintptr
-
-var (
-$vardecls
-)
-
-// Implemented in runtime/syscall_aix.go.
-func rawSyscall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
-func syscall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
-
-$textgc
-EOF
-print $fgc $tofgc;
-
-# Print zsyscall_aix_ppc64_gc.go
-open(my $fgccgo, '>', 'zsyscall_aix_ppc64_gccgo.go');
-my $tofgccgo = <<EOF;
-// $cmdline
-// Code generated by the command above; see README.md. DO NOT EDIT.
-
-// +build $tags
-// +build gccgo
-
-package $package
-
-
-$c_extern
-*/
-import "C"
-import (
- "syscall"
-)
-
-
-EOF
-
-$tofgccgo .= "import \"golang.org/x/sys/unix\"\n" if $package ne "unix";
-
-$tofgccgo .=<<EOF;
-
-$textgccgo
-EOF
-print $fgccgo $tofgccgo;
-exit 0;
diff --git a/unix/zsyscall_aix_ppc64.go b/unix/zsyscall_aix_ppc64.go
index 3e929e5..e645a05 100644
--- a/unix/zsyscall_aix_ppc64.go
+++ b/unix/zsyscall_aix_ppc64.go
@@ -1,4 +1,4 @@
-// mksyscall_aix_ppc64.pl -aix -tags aix,ppc64 syscall_aix.go syscall_aix_ppc64.go
+// go run mksyscall_aix_ppc64.go -aix -tags aix,ppc64 syscall_aix.go syscall_aix_ppc64.go
// Code generated by the command above; see README.md. DO NOT EDIT.
// +build aix,ppc64
diff --git a/unix/zsyscall_aix_ppc64_gc.go b/unix/zsyscall_aix_ppc64_gc.go
index a185ee8..0b8eb72 100644
--- a/unix/zsyscall_aix_ppc64_gc.go
+++ b/unix/zsyscall_aix_ppc64_gc.go
@@ -1,4 +1,4 @@
-// mksyscall_aix_ppc64.pl -aix -tags aix,ppc64 syscall_aix.go syscall_aix_ppc64.go
+// go run mksyscall_aix_ppc64.go -aix -tags aix,ppc64 syscall_aix.go syscall_aix_ppc64.go
// Code generated by the command above; see README.md. DO NOT EDIT.
// +build aix,ppc64
diff --git a/unix/zsyscall_aix_ppc64_gccgo.go b/unix/zsyscall_aix_ppc64_gccgo.go
index aef7c0e..e88a442 100644
--- a/unix/zsyscall_aix_ppc64_gccgo.go
+++ b/unix/zsyscall_aix_ppc64_gccgo.go
@@ -1,4 +1,4 @@
-// mksyscall_aix_ppc64.pl -aix -tags aix,ppc64 syscall_aix.go syscall_aix_ppc64.go
+// go run mksyscall_aix_ppc64.go -aix -tags aix,ppc64 syscall_aix.go syscall_aix_ppc64.go
// Code generated by the command above; see README.md. DO NOT EDIT.
// +build aix,ppc64