syscall: mingw implemntation of Errstr()

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/621041

src/pkg/syscall/Makefile

@@ -6,7 +6,7 @@ include ../../Make.$(GOARCH)
 
 TARG=syscall
 GOFILES=\
-	errstr.go\
+	str.go\
 	exec.go\
 	syscall.go\
 	syscall_$(GOARCH).go\
@@ -17,7 +17,21 @@ GOFILES=\
 	zsysnum_$(GOOS)_$(GOARCH).go\
 	ztypes_$(GOOS)_$(GOARCH).go\
 
+GOFILES_freebsd=\
+	syscall_unix.go\
+
+GOFILES_darwin=\
+	syscall_unix.go\
+
+GOFILES_linux=\
+	syscall_unix.go\
+
+GOFILES_nacl=\
+	syscall_unix.go\
+
 OFILES=\
 	asm_$(GOOS)_$(GOARCH).$O\
 
+GOFILES+=$(GOFILES_$(GOOS))
+
 include ../../Make.pkg

src/pkg/syscall/errstr.go → src/pkg/syscall/str.go

@@ -4,7 +4,6 @@
 
 package syscall
 
-
 func str(val int) string { // do it here rather than with fmt to avoid dependency
 	if val < 0 {
 		return "-" + str(-val)
@@ -19,10 +18,3 @@ func str(val int) string { // do it here rather than with fmt to avoid dependenc
 	buf[i] = byte(val + '0')
 	return string(buf[i:])
 }
-
-func Errstr(errno int) string {
-	if errno < 0 || errno >= int(len(errors)) {
-		return "error " + str(errno)
-	}
-	return errors[errno]
-}

src/pkg/syscall/syscall_mingw.go

@@ -24,7 +24,7 @@ import (
 )
 
 func abort(funcname string, err int) {
-	panic(funcname+" failed: (", err, ") ", syscall.GetErrstr(err), "\n")
+	panic(funcname+" failed: (", err, ") ", syscall.Errstr(err), "\n")
 }
 
 func print_version(v uint32) {
@@ -99,11 +99,9 @@ func getSysProcAddr(m uint32, pname string) uintptr {
 //sys	GetVersion() (ver uint32, errno int)
 //sys	FormatMessage(flags uint32, msgsrc uint32, msgid uint32, langid uint32, buf []uint16, args *byte) (n uint32, errno int) = FormatMessageW
 
-// TODO(brainman): maybe GetErrstr should replace Errstr alltogether
-
-func GetErrstr(errno int) string {
+func Errstr(errno int) string {
 	if errno == EMINGW {
-		return errors[errno]
+		return "not supported by windows"
 	}
 	var b = make([]uint16, 300)
 	n, err := FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_ARGUMENT_ARRAY, 0, uint32(errno), 0, b, nil)

src/pkg/syscall/syscall_unix.go

+// Copyright 2009 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.
+
+package syscall
+
+func Errstr(errno int) string {
+	if errno < 0 || errno >= int(len(errors)) {
+		return "error " + str(errno)
+	}
+	return errors[errno]
+}

src/pkg/syscall/zerrors_mingw_386.go

@@ -12,8 +12,3 @@ const (
 	// TODO(brainman): should use value for EMINGW that does not clashes with anything else
 	EMINGW = 99999 /* otherwise unused */
 )
-
-// Error table
-var errors = [...]string{
-	EMINGW: "not supported by windows",
-}