runtime: break out system-specific constants into package sys

runtime/internal/sys will hold system-, architecture- and config-
specific constants.

Updates #11647

Change-Id: I6db29c312556087a42e8d2bdd9af40d157c56b54
Reviewed-on: https://go-review.googlesource.com/16817
Reviewed-by: Russ Cox <rsc@golang.org>

28 files changed, 614 insertions, 0 deletions

diff --git a/src/runtime/internal/sys/arch_386.go b/src/runtime/internal/sys/arch_386.go
new file mode 100644
index 0000000000..15c8e840eb
--- /dev/null
+++ b/src/runtime/internal/sys/arch_386.go
@@ -0,0 +1,19 @@
+// Copyright 2014 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 sys
+
+const (
+	TheChar       = '8'
+	BigEndian     = 0
+	CacheLineSize = 64
+	PhysPageSize  = GoosNacl*65536 + (1-GoosNacl)*4096 // 4k normally; 64k on NaCl
+	PCQuantum     = 1
+	Int64Align    = 4
+	HugePageSize  = 1 << 21
+	MinFrameSize  = 0
+)
+
+type Uintreg uint32
+type Intptr int32 // TODO(rsc): remove
diff --git a/src/runtime/internal/sys/arch_amd64.go b/src/runtime/internal/sys/arch_amd64.go
new file mode 100644
index 0000000000..bc9002cc71
--- /dev/null
+++ b/src/runtime/internal/sys/arch_amd64.go
@@ -0,0 +1,19 @@
+// Copyright 2014 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 sys
+
+const (
+	TheChar       = '6'
+	BigEndian     = 0
+	CacheLineSize = 64
+	PhysPageSize  = 4096
+	PCQuantum     = 1
+	Int64Align    = 8
+	HugePageSize  = 1 << 21
+	MinFrameSize  = 0
+)
+
+type Uintreg uint64
+type Intptr int64 // TODO(rsc): remove
diff --git a/src/runtime/internal/sys/arch_amd64p32.go b/src/runtime/internal/sys/arch_amd64p32.go
new file mode 100644
index 0000000000..d7c185f168
--- /dev/null
+++ b/src/runtime/internal/sys/arch_amd64p32.go
@@ -0,0 +1,19 @@
+// Copyright 2014 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 sys
+
+const (
+	TheChar       = '6'
+	BigEndian     = 0
+	CacheLineSize = 64
+	PhysPageSize  = 65536*GoosNacl + 4096*(1-GoosNacl)
+	PCQuantum     = 1
+	Int64Align    = 8
+	HugePageSize  = 1 << 21
+	MinFrameSize  = 0
+)
+
+type Uintreg uint64
+type Intptr int32 // TODO(rsc): remove
diff --git a/src/runtime/internal/sys/arch_arm.go b/src/runtime/internal/sys/arch_arm.go
new file mode 100644
index 0000000000..d395ac5fa8
--- /dev/null
+++ b/src/runtime/internal/sys/arch_arm.go
@@ -0,0 +1,19 @@
+// Copyright 2014 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 sys
+
+const (
+	TheChar       = '5'
+	BigEndian     = 0
+	CacheLineSize = 32
+	PhysPageSize  = 65536*GoosNacl + 4096*(1-GoosNacl)
+	PCQuantum     = 4
+	Int64Align    = 4
+	HugePageSize  = 0
+	MinFrameSize  = 4
+)
+
+type Uintreg uint32
+type Intptr int32 // TODO(rsc): remove
diff --git a/src/runtime/internal/sys/arch_arm64.go b/src/runtime/internal/sys/arch_arm64.go
new file mode 100644
index 0000000000..bd7e41d97e
--- /dev/null
+++ b/src/runtime/internal/sys/arch_arm64.go
@@ -0,0 +1,19 @@
+// Copyright 2014 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 sys
+
+const (
+	TheChar       = '7'
+	BigEndian     = 0
+	CacheLineSize = 32
+	PhysPageSize  = 65536
+	PCQuantum     = 4
+	Int64Align    = 8
+	HugePageSize  = 0
+	MinFrameSize  = 8
+)
+
+type Uintreg uint64
+type Intptr int64 // TODO(rsc): remove
diff --git a/src/runtime/internal/sys/arch_ppc64.go b/src/runtime/internal/sys/arch_ppc64.go
new file mode 100644
index 0000000000..9b13415dfc
--- /dev/null
+++ b/src/runtime/internal/sys/arch_ppc64.go
@@ -0,0 +1,19 @@
+// Copyright 2014 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 sys
+
+const (
+	TheChar       = '9'
+	BigEndian     = 1
+	CacheLineSize = 64
+	PhysPageSize  = 65536
+	PCQuantum     = 4
+	Int64Align    = 8
+	HugePageSize  = 0
+	MinFrameSize  = 8
+)
+
+type Uintreg uint64
+type Intptr int64 // TODO(rsc): remove
diff --git a/src/runtime/internal/sys/arch_ppc64le.go b/src/runtime/internal/sys/arch_ppc64le.go
new file mode 100644
index 0000000000..db9b2aa32b
--- /dev/null
+++ b/src/runtime/internal/sys/arch_ppc64le.go
@@ -0,0 +1,19 @@
+// Copyright 2014 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 sys
+
+const (
+	TheChar       = '9'
+	BigEndian     = 0
+	CacheLineSize = 64
+	PhysPageSize  = 65536
+	PCQuantum     = 4
+	Int64Align    = 8
+	HugePageSize  = 0
+	MinFrameSize  = 8
+)
+
+type Uintreg uint64
+type Intptr int64 // TODO(rsc): remove
diff --git a/src/runtime/internal/sys/gengoos.go b/src/runtime/internal/sys/gengoos.go
new file mode 100644
index 0000000000..55d991cac3
--- /dev/null
+++ b/src/runtime/internal/sys/gengoos.go
@@ -0,0 +1,84 @@
+// Copyright 2014 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
+
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"strconv"
+	"strings"
+)
+
+var gooses, goarches []string
+
+func main() {
+	data, err := ioutil.ReadFile("../../../go/build/syslist.go")
+	if err != nil {
+		log.Fatal(err)
+	}
+	const (
+		goosPrefix   = `const goosList = `
+		goarchPrefix = `const goarchList = `
+	)
+	for _, line := range strings.Split(string(data), "\n") {
+		if strings.HasPrefix(line, goosPrefix) {
+			text, err := strconv.Unquote(strings.TrimPrefix(line, goosPrefix))
+			if err != nil {
+				log.Fatalf("parsing goosList %#q: %v", strings.TrimPrefix(line, goosPrefix), err)
+			}
+			gooses = strings.Fields(text)
+		}
+		if strings.HasPrefix(line, goarchPrefix) {
+			text, err := strconv.Unquote(strings.TrimPrefix(line, goarchPrefix))
+			if err != nil {
+				log.Fatal("parsing goarchList: %v", err)
+			}
+			goarches = strings.Fields(text)
+		}
+	}
+
+	for _, target := range gooses {
+		var buf bytes.Buffer
+		fmt.Fprintf(&buf, "// generated by gengoos.go using 'go generate'\n\n")
+		if target == "linux" {
+			fmt.Fprintf(&buf, "// +build !android\n\n") // must explicitly exclude android for linux
+		}
+		fmt.Fprintf(&buf, "package sys\n\n")
+		fmt.Fprintf(&buf, "const TheGoos = `%s`\n\n", target)
+		for _, goos := range gooses {
+			value := 0
+			if goos == target {
+				value = 1
+			}
+			fmt.Fprintf(&buf, "const Goos%s = %d\n", strings.Title(goos), value)
+		}
+		err := ioutil.WriteFile("zgoos_"+target+".go", buf.Bytes(), 0666)
+		if err != nil {
+			log.Fatal(err)
+		}
+	}
+
+	for _, target := range goarches {
+		var buf bytes.Buffer
+		fmt.Fprintf(&buf, "// generated by gengoos.go using 'go generate'\n\n")
+		fmt.Fprintf(&buf, "package sys\n\n")
+		fmt.Fprintf(&buf, "const TheGoarch = `%s`\n\n", target)
+		for _, goarch := range goarches {
+			value := 0
+			if goarch == target {
+				value = 1
+			}
+			fmt.Fprintf(&buf, "const Goarch%s = %d\n", strings.Title(goarch), value)
+		}
+		err := ioutil.WriteFile("zgoarch_"+target+".go", buf.Bytes(), 0666)
+		if err != nil {
+			log.Fatal(err)
+		}
+	}
+}
diff --git a/src/runtime/internal/sys/stubs.go b/src/runtime/internal/sys/stubs.go
new file mode 100644
index 0000000000..0a94502f32
--- /dev/null
+++ b/src/runtime/internal/sys/stubs.go
@@ -0,0 +1,11 @@
+// Copyright 2014 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 sys
+
+// Declarations for runtime services implemented in C or assembly.
+
+const PtrSize = 4 << (^uintptr(0) >> 63)           // unsafe.Sizeof(uintptr(0)) but an ideal const
+const RegSize = 4 << (^Uintreg(0) >> 63)           // unsafe.Sizeof(uintreg(0)) but an ideal const
+const SpAlign = 1*(1-GoarchArm64) + 16*GoarchArm64 // SP alignment: 1 normally, 16 for ARM64
diff --git a/src/runtime/internal/sys/sys.go b/src/runtime/internal/sys/sys.go
new file mode 100644
index 0000000000..15ad7f5d70
--- /dev/null
+++ b/src/runtime/internal/sys/sys.go
@@ -0,0 +1,15 @@
+// Copyright 2015 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 sys contains system- and configuration- and architecture-specific
+// constants used by the runtime.
+package sys
+
+// The next line makes 'go generate' write the zgen_*.go files with
+// per-OS and per-arch information, including constants
+// named goos_$GOOS and goarch_$GOARCH for every
+// known GOOS and GOARCH. The constant is 1 on the
+// current system, 0 otherwise; multiplying by them is
+// useful for defining GOOS- or GOARCH-specific constants.
+//go:generate go run gengoos.go
diff --git a/src/runtime/internal/sys/zgoarch_386.go b/src/runtime/internal/sys/zgoarch_386.go
new file mode 100644
index 0000000000..3ad244509d
--- /dev/null
+++ b/src/runtime/internal/sys/zgoarch_386.go
@@ -0,0 +1,26 @@
+// generated by gengoos.go using 'go generate'
+
+package sys
+
+const TheGoarch = `386`
+
+const Goarch386 = 1
+const GoarchAmd64 = 0
+const GoarchAmd64p32 = 0
+const GoarchArm = 0
+const GoarchArmbe = 0
+const GoarchArm64 = 0
+const GoarchArm64be = 0
+const GoarchPpc64 = 0
+const GoarchPpc64le = 0
+const GoarchMips = 0
+const GoarchMipsle = 0
+const GoarchMips64 = 0
+const GoarchMips64le = 0
+const GoarchMips64p32 = 0
+const GoarchMips64p32le = 0
+const GoarchPpc = 0
+const GoarchS390 = 0
+const GoarchS390x = 0
+const GoarchSparc = 0
+const GoarchSparc64 = 0
diff --git a/src/runtime/internal/sys/zgoarch_amd64.go b/src/runtime/internal/sys/zgoarch_amd64.go
new file mode 100644
index 0000000000..7c858e3f5d
--- /dev/null
+++ b/src/runtime/internal/sys/zgoarch_amd64.go
@@ -0,0 +1,26 @@
+// generated by gengoos.go using 'go generate'
+
+package sys
+
+const TheGoarch = `amd64`
+
+const Goarch386 = 0
+const GoarchAmd64 = 1
+const GoarchAmd64p32 = 0
+const GoarchArm = 0
+const GoarchArmbe = 0
+const GoarchArm64 = 0
+const GoarchArm64be = 0
+const GoarchPpc64 = 0
+const GoarchPpc64le = 0
+const GoarchMips = 0
+const GoarchMipsle = 0
+const GoarchMips64 = 0
+const GoarchMips64le = 0
+const GoarchMips64p32 = 0
+const GoarchMips64p32le = 0
+const GoarchPpc = 0
+const GoarchS390 = 0
+const GoarchS390x = 0
+const GoarchSparc = 0
+const GoarchSparc64 = 0
diff --git a/src/runtime/internal/sys/zgoarch_amd64p32.go b/src/runtime/internal/sys/zgoarch_amd64p32.go
new file mode 100644
index 0000000000..772031c090
--- /dev/null
+++ b/src/runtime/internal/sys/zgoarch_amd64p32.go
@@ -0,0 +1,26 @@
+// generated by gengoos.go using 'go generate'
+
+package sys
+
+const TheGoarch = `amd64p32`
+
+const Goarch386 = 0
+const GoarchAmd64 = 0
+const GoarchAmd64p32 = 1
+const GoarchArm = 0
+const GoarchArmbe = 0
+const GoarchArm64 = 0
+const GoarchArm64be = 0
+const GoarchPpc64 = 0
+const GoarchPpc64le = 0
+const GoarchMips = 0
+const GoarchMipsle = 0
+const GoarchMips64 = 0
+const GoarchMips64le = 0
+const GoarchMips64p32 = 0
+const GoarchMips64p32le = 0
+const GoarchPpc = 0
+const GoarchS390 = 0
+const GoarchS390x = 0
+const GoarchSparc = 0
+const GoarchSparc64 = 0
diff --git a/src/runtime/internal/sys/zgoarch_arm.go b/src/runtime/internal/sys/zgoarch_arm.go
new file mode 100644
index 0000000000..276e8a869b
--- /dev/null
+++ b/src/runtime/internal/sys/zgoarch_arm.go
@@ -0,0 +1,26 @@
+// generated by gengoos.go using 'go generate'
+
+package sys
+
+const TheGoarch = `arm`
+
+const Goarch386 = 0
+const GoarchAmd64 = 0
+const GoarchAmd64p32 = 0
+const GoarchArm = 1
+const GoarchArmbe = 0
+const GoarchArm64 = 0
+const GoarchArm64be = 0
+const GoarchPpc64 = 0
+const GoarchPpc64le = 0
+const GoarchMips = 0
+const GoarchMipsle = 0
+const GoarchMips64 = 0
+const GoarchMips64le = 0
+const GoarchMips64p32 = 0
+const GoarchMips64p32le = 0
+const GoarchPpc = 0
+const GoarchS390 = 0
+const GoarchS390x = 0
+const GoarchSparc = 0
+const GoarchSparc64 = 0
diff --git a/src/runtime/internal/sys/zgoarch_arm64.go b/src/runtime/internal/sys/zgoarch_arm64.go
new file mode 100644
index 0000000000..d124ec0343
--- /dev/null
+++ b/src/runtime/internal/sys/zgoarch_arm64.go
@@ -0,0 +1,26 @@
+// generated by gengoos.go using 'go generate'
+
+package sys
+
+const TheGoarch = `arm64`
+
+const Goarch386 = 0
+const GoarchAmd64 = 0
+const GoarchAmd64p32 = 0
+const GoarchArm = 0
+const GoarchArmbe = 0
+const GoarchArm64 = 1
+const GoarchArm64be = 0
+const GoarchPpc64 = 0
+const GoarchPpc64le = 0
+const GoarchMips = 0
+const GoarchMipsle = 0
+const GoarchMips64 = 0
+const GoarchMips64le = 0
+const GoarchMips64p32 = 0
+const GoarchMips64p32le = 0
+const GoarchPpc = 0
+const GoarchS390 = 0
+const GoarchS390x = 0
+const GoarchSparc = 0
+const GoarchSparc64 = 0
diff --git a/src/runtime/internal/sys/zgoarch_ppc64.go b/src/runtime/internal/sys/zgoarch_ppc64.go
new file mode 100644
index 0000000000..06f78b2023
--- /dev/null
+++ b/src/runtime/internal/sys/zgoarch_ppc64.go
@@ -0,0 +1,26 @@
+// generated by gengoos.go using 'go generate'
+
+package sys
+
+const TheGoarch = `ppc64`
+
+const Goarch386 = 0
+const GoarchAmd64 = 0
+const GoarchAmd64p32 = 0
+const GoarchArm = 0
+const GoarchArmbe = 0
+const GoarchArm64 = 0
+const GoarchArm64be = 0
+const GoarchPpc64 = 1
+const GoarchPpc64le = 0
+const GoarchMips = 0
+const GoarchMipsle = 0
+const GoarchMips64 = 0
+const GoarchMips64le = 0
+const GoarchMips64p32 = 0
+const GoarchMips64p32le = 0
+const GoarchPpc = 0
+const GoarchS390 = 0
+const GoarchS390x = 0
+const GoarchSparc = 0
+const GoarchSparc64 = 0
diff --git a/src/runtime/internal/sys/zgoarch_ppc64le.go b/src/runtime/internal/sys/zgoarch_ppc64le.go
new file mode 100644
index 0000000000..50b56dbe3f
--- /dev/null
+++ b/src/runtime/internal/sys/zgoarch_ppc64le.go
@@ -0,0 +1,26 @@
+// generated by gengoos.go using 'go generate'
+
+package sys
+
+const TheGoarch = `ppc64le`
+
+const Goarch386 = 0
+const GoarchAmd64 = 0
+const GoarchAmd64p32 = 0
+const GoarchArm = 0
+const GoarchArmbe = 0
+const GoarchArm64 = 0
+const GoarchArm64be = 0
+const GoarchPpc64 = 0
+const GoarchPpc64le = 1
+const GoarchMips = 0
+const GoarchMipsle = 0
+const GoarchMips64 = 0
+const GoarchMips64le = 0
+const GoarchMips64p32 = 0
+const GoarchMips64p32le = 0
+const GoarchPpc = 0
+const GoarchS390 = 0
+const GoarchS390x = 0
+const GoarchSparc = 0
+const GoarchSparc64 = 0
diff --git a/src/runtime/internal/sys/zgoos_android.go b/src/runtime/internal/sys/zgoos_android.go
new file mode 100644
index 0000000000..03d91760ed
--- /dev/null
+++ b/src/runtime/internal/sys/zgoos_android.go
@@ -0,0 +1,17 @@
+// generated by gengoos.go using 'go generate'
+
+package sys
+
+const TheGoos = `android`
+
+const GoosAndroid = 1
+const GoosDarwin = 0
+const GoosDragonfly = 0
+const GoosFreebsd = 0
+const GoosLinux = 0
+const GoosNacl = 0
+const GoosNetbsd = 0
+const GoosOpenbsd = 0
+const GoosPlan9 = 0
+const GoosSolaris = 0
+const GoosWindows = 0
diff --git a/src/runtime/internal/sys/zgoos_darwin.go b/src/runtime/internal/sys/zgoos_darwin.go
new file mode 100644
index 0000000000..eb2efeb7af
--- /dev/null
+++ b/src/runtime/internal/sys/zgoos_darwin.go
@@ -0,0 +1,17 @@
+// generated by gengoos.go using 'go generate'
+
+package sys
+
+const TheGoos = `darwin`
+
+const GoosAndroid = 0
+const GoosDarwin = 1
+const GoosDragonfly = 0
+const GoosFreebsd = 0
+const GoosLinux = 0
+const GoosNacl = 0
+const GoosNetbsd = 0
+const GoosOpenbsd = 0
+const GoosPlan9 = 0
+const GoosSolaris = 0
+const GoosWindows = 0
diff --git a/src/runtime/internal/sys/zgoos_dragonfly.go b/src/runtime/internal/sys/zgoos_dragonfly.go
new file mode 100644
index 0000000000..403cf65311
--- /dev/null
+++ b/src/runtime/internal/sys/zgoos_dragonfly.go
@@ -0,0 +1,17 @@
+// generated by gengoos.go using 'go generate'
+
+package sys
+
+const TheGoos = `dragonfly`
+
+const GoosAndroid = 0
+const GoosDarwin = 0
+const GoosDragonfly = 1
+const GoosFreebsd = 0
+const GoosLinux = 0
+const GoosNacl = 0
+const GoosNetbsd = 0
+const GoosOpenbsd = 0
+const GoosPlan9 = 0
+const GoosSolaris = 0
+const GoosWindows = 0
diff --git a/src/runtime/internal/sys/zgoos_freebsd.go b/src/runtime/internal/sys/zgoos_freebsd.go
new file mode 100644
index 0000000000..632d5db9db
--- /dev/null
+++ b/src/runtime/internal/sys/zgoos_freebsd.go
@@ -0,0 +1,17 @@
+// generated by gengoos.go using 'go generate'
+
+package sys
+
+const TheGoos = `freebsd`
+
+const GoosAndroid = 0
+const GoosDarwin = 0
+const GoosDragonfly = 0
+const GoosFreebsd = 1
+const GoosLinux = 0
+const GoosNacl = 0
+const GoosNetbsd = 0
+const GoosOpenbsd = 0
+const GoosPlan9 = 0
+const GoosSolaris = 0
+const GoosWindows = 0
diff --git a/src/runtime/internal/sys/zgoos_linux.go b/src/runtime/internal/sys/zgoos_linux.go
new file mode 100644
index 0000000000..2d43869a84
--- /dev/null
+++ b/src/runtime/internal/sys/zgoos_linux.go
@@ -0,0 +1,19 @@
+// generated by gengoos.go using 'go generate'
+
+// +build !android
+
+package sys
+
+const TheGoos = `linux`
+
+const GoosAndroid = 0
+const GoosDarwin = 0
+const GoosDragonfly = 0
+const GoosFreebsd = 0
+const GoosLinux = 1
+const GoosNacl = 0
+const GoosNetbsd = 0
+const GoosOpenbsd = 0
+const GoosPlan9 = 0
+const GoosSolaris = 0
+const GoosWindows = 0
diff --git a/src/runtime/internal/sys/zgoos_nacl.go b/src/runtime/internal/sys/zgoos_nacl.go
new file mode 100644
index 0000000000..a56b6ef3c9
--- /dev/null
+++ b/src/runtime/internal/sys/zgoos_nacl.go
@@ -0,0 +1,17 @@
+// generated by gengoos.go using 'go generate'
+
+package sys
+
+const TheGoos = `nacl`
+
+const GoosAndroid = 0
+const GoosDarwin = 0
+const GoosDragonfly = 0
+const GoosFreebsd = 0
+const GoosLinux = 0
+const GoosNacl = 1
+const GoosNetbsd = 0
+const GoosOpenbsd = 0
+const GoosPlan9 = 0
+const GoosSolaris = 0
+const GoosWindows = 0
diff --git a/src/runtime/internal/sys/zgoos_netbsd.go b/src/runtime/internal/sys/zgoos_netbsd.go
new file mode 100644
index 0000000000..46fd0a7cd5
--- /dev/null
+++ b/src/runtime/internal/sys/zgoos_netbsd.go
@@ -0,0 +1,17 @@
+// generated by gengoos.go using 'go generate'
+
+package sys
+
+const TheGoos = `netbsd`
+
+const GoosAndroid = 0
+const GoosDarwin = 0
+const GoosDragonfly = 0
+const GoosFreebsd = 0
+const GoosLinux = 0
+const GoosNacl = 0
+const GoosNetbsd = 1
+const GoosOpenbsd = 0
+const GoosPlan9 = 0
+const GoosSolaris = 0
+const GoosWindows = 0
diff --git a/src/runtime/internal/sys/zgoos_openbsd.go b/src/runtime/internal/sys/zgoos_openbsd.go
new file mode 100644
index 0000000000..7ee650afbb
--- /dev/null
+++ b/src/runtime/internal/sys/zgoos_openbsd.go
@@ -0,0 +1,17 @@
+// generated by gengoos.go using 'go generate'
+
+package sys
+
+const TheGoos = `openbsd`
+
+const GoosAndroid = 0
+const GoosDarwin = 0
+const GoosDragonfly = 0
+const GoosFreebsd = 0
+const GoosLinux = 0
+const GoosNacl = 0
+const GoosNetbsd = 0
+const GoosOpenbsd = 1
+const GoosPlan9 = 0
+const GoosSolaris = 0
+const GoosWindows = 0
diff --git a/src/runtime/internal/sys/zgoos_plan9.go b/src/runtime/internal/sys/zgoos_plan9.go
new file mode 100644
index 0000000000..162e7f6260
--- /dev/null
+++ b/src/runtime/internal/sys/zgoos_plan9.go
@@ -0,0 +1,17 @@
+// generated by gengoos.go using 'go generate'
+
+package sys
+
+const TheGoos = `plan9`
+
+const GoosAndroid = 0
+const GoosDarwin = 0
+const GoosDragonfly = 0
+const GoosFreebsd = 0
+const GoosLinux = 0
+const GoosNacl = 0
+const GoosNetbsd = 0
+const GoosOpenbsd = 0
+const GoosPlan9 = 1
+const GoosSolaris = 0
+const GoosWindows = 0
diff --git a/src/runtime/internal/sys/zgoos_solaris.go b/src/runtime/internal/sys/zgoos_solaris.go
new file mode 100644
index 0000000000..b2a8f98504
--- /dev/null
+++ b/src/runtime/internal/sys/zgoos_solaris.go
@@ -0,0 +1,17 @@
+// generated by gengoos.go using 'go generate'
+
+package sys
+
+const TheGoos = `solaris`
+
+const GoosAndroid = 0
+const GoosDarwin = 0
+const GoosDragonfly = 0
+const GoosFreebsd = 0
+const GoosLinux = 0
+const GoosNacl = 0
+const GoosNetbsd = 0
+const GoosOpenbsd = 0
+const GoosPlan9 = 0
+const GoosSolaris = 1
+const GoosWindows = 0
diff --git a/src/runtime/internal/sys/zgoos_windows.go b/src/runtime/internal/sys/zgoos_windows.go
new file mode 100644
index 0000000000..817ec79e4c
--- /dev/null
+++ b/src/runtime/internal/sys/zgoos_windows.go
@@ -0,0 +1,17 @@
+// generated by gengoos.go using 'go generate'
+
+package sys
+
+const TheGoos = `windows`
+
+const GoosAndroid = 0
+const GoosDarwin = 0
+const GoosDragonfly = 0
+const GoosFreebsd = 0
+const GoosLinux = 0
+const GoosNacl = 0
+const GoosNetbsd = 0
+const GoosOpenbsd = 0
+const GoosPlan9 = 0
+const GoosSolaris = 0
+const GoosWindows = 1