diff --git a/src/cmd/go/internal/work/gc.go b/src/cmd/go/internal/work/gc.go
index 85da4f89f9..2ae908bc8f 100644
--- a/src/cmd/go/internal/work/gc.go
+++ b/src/cmd/go/internal/work/gc.go
@@ -29,6 +29,18 @@ import (
 // The 'path' used for GOROOT_FINAL when -trimpath is specified
 const trimPathGoRootFinal = "go"
 
+var runtimePackages = map[string]struct{}{
+	"internal/abi":            struct{}{},
+	"internal/bytealg":        struct{}{},
+	"internal/cpu":            struct{}{},
+	"internal/goarch":         struct{}{},
+	"internal/goos":           struct{}{},
+	"runtime":                 struct{}{},
+	"runtime/internal/atomic": struct{}{},
+	"runtime/internal/math":   struct{}{},
+	"runtime/internal/sys":    struct{}{},
+}
+
 // The Go toolchain.
 
 type gcToolchain struct{}
@@ -88,11 +100,8 @@ func (gcToolchain) gc(b *Builder, a *Action, archive string, importcfg, embedcfg
 	if p.Standard {
 		gcargs = append(gcargs, "-std")
 	}
-	compilingRuntime := p.Standard && (p.ImportPath == "runtime" || strings.HasPrefix(p.ImportPath, "runtime/internal"))
-	// The runtime package imports a couple of general internal packages.
-	if p.Standard && (p.ImportPath == "internal/cpu" || p.ImportPath == "internal/bytealg" || p.ImportPath == "internal/abi") {
-		compilingRuntime = true
-	}
+	_, compilingRuntime := runtimePackages[p.ImportPath]
+	compilingRuntime = compilingRuntime && p.Standard
 	if compilingRuntime {
 		// runtime compiles with a special gc flag to check for
 		// memory allocations that are invalid in the runtime package,
diff --git a/src/go/build/deps_test.go b/src/go/build/deps_test.go
index 45e2f25df7..b440f7d235 100644
--- a/src/go/build/deps_test.go
+++ b/src/go/build/deps_test.go
@@ -71,7 +71,8 @@ var depsRules = `
 	# No dependencies allowed for any of these packages.
 	NONE
 	< container/list, container/ring,
-	  internal/cfg, internal/cpu, internal/goexperiment,
+	  internal/cfg, internal/cpu, internal/goarch,
+	  internal/goexperiment, internal/goos,
 	  internal/goversion, internal/nettrace,
 	  unicode/utf8, unicode/utf16, unicode,
 	  unsafe;
@@ -81,7 +82,8 @@ var depsRules = `
 	< internal/abi;
 
 	# RUNTIME is the core runtime group of packages, all of them very light-weight.
-	internal/abi, internal/cpu, internal/goexperiment, unsafe
+	internal/abi, internal/cpu, internal/goarch,
+	internal/goexperiment, internal/goos, unsafe
 	< internal/bytealg
 	< internal/itoa
 	< internal/unsafeheader
diff --git a/src/internal/goarch/gengoarch.go b/src/internal/goarch/gengoarch.go
new file mode 100644
index 0000000000..58c3b1104c
--- /dev/null
+++ b/src/internal/goarch/gengoarch.go
@@ -0,0 +1,59 @@
+// 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.
+
+//go:build ignore
+// +build ignore
+
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"log"
+	"os"
+	"strconv"
+	"strings"
+)
+
+var goarches []string
+
+func main() {
+	data, err := os.ReadFile("../../go/build/syslist.go")
+	if err != nil {
+		log.Fatal(err)
+	}
+	const goarchPrefix = `const goarchList = `
+	for _, line := range strings.Split(string(data), "\n") {
+		if strings.HasPrefix(line, goarchPrefix) {
+			text, err := strconv.Unquote(strings.TrimPrefix(line, goarchPrefix))
+			if err != nil {
+				log.Fatalf("parsing goarchList: %v", err)
+			}
+			goarches = strings.Fields(text)
+		}
+	}
+
+	for _, target := range goarches {
+		if target == "amd64p32" {
+			continue
+		}
+		var buf bytes.Buffer
+		fmt.Fprintf(&buf, "// Code generated by gengoarch.go using 'go generate'. DO NOT EDIT.\n\n")
+		fmt.Fprintf(&buf, "//go:build %s\n", target)
+		fmt.Fprintf(&buf, "// +build %s\n\n", target) // must explicitly include target for bootstrapping purposes
+		fmt.Fprintf(&buf, "package goarch\n\n")
+		fmt.Fprintf(&buf, "const GOARCH = `%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 := os.WriteFile("zgoarch_"+target+".go", buf.Bytes(), 0666)
+		if err != nil {
+			log.Fatal(err)
+		}
+	}
+}
diff --git a/src/runtime/internal/sys/arch.go b/src/internal/goarch/goarch.go
similarity index 79%
rename from src/runtime/internal/sys/arch.go
rename to src/internal/goarch/goarch.go
index 3c99a2f7da..8e240295b3 100644
--- a/src/runtime/internal/sys/arch.go
+++ b/src/internal/goarch/goarch.go
@@ -1,8 +1,15 @@
-// Copyright 2014 The Go Authors. All rights reserved.
+// Copyright 2021 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
+// package goarch contains GOARCH-specific constants.
+package goarch
+
+// The next line makes 'go generate' write the zgoarch*.go files with
+// per-arch information, including constants named Goarch$GOARCH for every
+// GOARCH. The constant is 1 on the current system, 0 otherwise; multiplying
+// by them is useful for defining GOARCH-specific constants.
+//go:generate go run gengoarch.go
 
 type ArchFamilyType int
 
@@ -23,9 +30,6 @@ const (
 // It is also the size of the machine's native word size (that is, 4 on 32-bit systems, 8 on 64-bit).
 const PtrSize = 4 << (^uintptr(0) >> 63)
 
-// AIX requires a larger stack for syscalls.
-const StackGuardMultiplier = StackGuardMultiplierDefault*(1-GoosAix) + 2*GoosAix
-
 // ArchFamily is the architecture family (AMD64, ARM, ...)
 const ArchFamily ArchFamilyType = _ArchFamily
 
diff --git a/src/runtime/internal/sys/arch_386.go b/src/internal/goarch/goarch_386.go
similarity index 95%
rename from src/runtime/internal/sys/arch_386.go
rename to src/internal/goarch/goarch_386.go
index 1ebce3435e..c6214217fc 100644
--- a/src/runtime/internal/sys/arch_386.go
+++ b/src/internal/goarch/goarch_386.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package sys
+package goarch
 
 const (
 	_ArchFamily          = I386
diff --git a/src/runtime/internal/sys/arch_amd64.go b/src/internal/goarch/goarch_amd64.go
similarity index 95%
rename from src/runtime/internal/sys/arch_amd64.go
rename to src/internal/goarch/goarch_amd64.go
index 7f003d0f1d..911e3e7242 100644
--- a/src/runtime/internal/sys/arch_amd64.go
+++ b/src/internal/goarch/goarch_amd64.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package sys
+package goarch
 
 const (
 	_ArchFamily          = AMD64
diff --git a/src/runtime/internal/sys/arch_arm.go b/src/internal/goarch/goarch_arm.go
similarity index 95%
rename from src/runtime/internal/sys/arch_arm.go
rename to src/internal/goarch/goarch_arm.go
index ef2048bb71..a6591713c8 100644
--- a/src/runtime/internal/sys/arch_arm.go
+++ b/src/internal/goarch/goarch_arm.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package sys
+package goarch
 
 const (
 	_ArchFamily          = ARM
diff --git a/src/runtime/internal/sys/arch_arm64.go b/src/internal/goarch/goarch_arm64.go
similarity index 95%
rename from src/runtime/internal/sys/arch_arm64.go
rename to src/internal/goarch/goarch_arm64.go
index b9f2f7b1fe..85d0b47639 100644
--- a/src/runtime/internal/sys/arch_arm64.go
+++ b/src/internal/goarch/goarch_arm64.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package sys
+package goarch
 
 const (
 	_ArchFamily          = ARM64
diff --git a/src/runtime/internal/sys/arch_mips.go b/src/internal/goarch/goarch_mips.go
similarity index 95%
rename from src/runtime/internal/sys/arch_mips.go
rename to src/internal/goarch/goarch_mips.go
index 4cb0eebea7..59f3995e2a 100644
--- a/src/runtime/internal/sys/arch_mips.go
+++ b/src/internal/goarch/goarch_mips.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package sys
+package goarch
 
 const (
 	_ArchFamily          = MIPS
diff --git a/src/runtime/internal/sys/arch_mips64le.go b/src/internal/goarch/goarch_mips64.go
similarity index 95%
rename from src/runtime/internal/sys/arch_mips64le.go
rename to src/internal/goarch/goarch_mips64.go
index 57636ac4a4..9e4f82797d 100644
--- a/src/runtime/internal/sys/arch_mips64le.go
+++ b/src/internal/goarch/goarch_mips64.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package sys
+package goarch
 
 const (
 	_ArchFamily          = MIPS64
diff --git a/src/runtime/internal/sys/arch_mips64.go b/src/internal/goarch/goarch_mips64le.go
similarity index 95%
rename from src/runtime/internal/sys/arch_mips64.go
rename to src/internal/goarch/goarch_mips64le.go
index 57636ac4a4..9e4f82797d 100644
--- a/src/runtime/internal/sys/arch_mips64.go
+++ b/src/internal/goarch/goarch_mips64le.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package sys
+package goarch
 
 const (
 	_ArchFamily          = MIPS64
diff --git a/src/runtime/internal/sys/arch_mipsle.go b/src/internal/goarch/goarch_mipsle.go
similarity index 95%
rename from src/runtime/internal/sys/arch_mipsle.go
rename to src/internal/goarch/goarch_mipsle.go
index 4240f5ce47..3e6642bb86 100644
--- a/src/runtime/internal/sys/arch_mipsle.go
+++ b/src/internal/goarch/goarch_mipsle.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package sys
+package goarch
 
 const (
 	_ArchFamily          = MIPS
diff --git a/src/runtime/internal/sys/arch_ppc64.go b/src/internal/goarch/goarch_ppc64.go
similarity index 95%
rename from src/runtime/internal/sys/arch_ppc64.go
rename to src/internal/goarch/goarch_ppc64.go
index 1869213ce2..60cc846e6a 100644
--- a/src/runtime/internal/sys/arch_ppc64.go
+++ b/src/internal/goarch/goarch_ppc64.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package sys
+package goarch
 
 const (
 	_ArchFamily          = PPC64
diff --git a/src/runtime/internal/sys/arch_ppc64le.go b/src/internal/goarch/goarch_ppc64le.go
similarity index 95%
rename from src/runtime/internal/sys/arch_ppc64le.go
rename to src/internal/goarch/goarch_ppc64le.go
index 1869213ce2..60cc846e6a 100644
--- a/src/runtime/internal/sys/arch_ppc64le.go
+++ b/src/internal/goarch/goarch_ppc64le.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package sys
+package goarch
 
 const (
 	_ArchFamily          = PPC64
diff --git a/src/runtime/internal/sys/arch_riscv64.go b/src/internal/goarch/goarch_riscv64.go
similarity index 95%
rename from src/runtime/internal/sys/arch_riscv64.go
rename to src/internal/goarch/goarch_riscv64.go
index 360d236e32..3b6da1e02f 100644
--- a/src/runtime/internal/sys/arch_riscv64.go
+++ b/src/internal/goarch/goarch_riscv64.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package sys
+package goarch
 
 const (
 	_ArchFamily          = RISCV64
diff --git a/src/runtime/internal/sys/arch_s390x.go b/src/internal/goarch/goarch_s390x.go
similarity index 95%
rename from src/runtime/internal/sys/arch_s390x.go
rename to src/internal/goarch/goarch_s390x.go
index e33e0b7f2b..20c5705581 100644
--- a/src/runtime/internal/sys/arch_s390x.go
+++ b/src/internal/goarch/goarch_s390x.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package sys
+package goarch
 
 const (
 	_ArchFamily          = S390X
diff --git a/src/runtime/internal/sys/arch_wasm.go b/src/internal/goarch/goarch_wasm.go
similarity index 95%
rename from src/runtime/internal/sys/arch_wasm.go
rename to src/internal/goarch/goarch_wasm.go
index ee919ff9e6..98618d6980 100644
--- a/src/runtime/internal/sys/arch_wasm.go
+++ b/src/internal/goarch/goarch_wasm.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package sys
+package goarch
 
 const (
 	_ArchFamily          = WASM
diff --git a/src/runtime/internal/sys/zgoarch_386.go b/src/internal/goarch/zgoarch_386.go
similarity index 87%
rename from src/runtime/internal/sys/zgoarch_386.go
rename to src/internal/goarch/zgoarch_386.go
index 98a2401bfe..f424b5a6b9 100644
--- a/src/runtime/internal/sys/zgoarch_386.go
+++ b/src/internal/goarch/zgoarch_386.go
@@ -1,9 +1,9 @@
-// Code generated by gengoos.go using 'go generate'. DO NOT EDIT.
+// Code generated by gengoarch.go using 'go generate'. DO NOT EDIT.
 
 //go:build 386
 // +build 386
 
-package sys
+package goarch
 
 const GOARCH = `386`
 
diff --git a/src/runtime/internal/sys/zgoarch_amd64.go b/src/internal/goarch/zgoarch_amd64.go
similarity index 87%
rename from src/runtime/internal/sys/zgoarch_amd64.go
rename to src/internal/goarch/zgoarch_amd64.go
index d8faa5c786..728896c367 100644
--- a/src/runtime/internal/sys/zgoarch_amd64.go
+++ b/src/internal/goarch/zgoarch_amd64.go
@@ -1,9 +1,9 @@
-// Code generated by gengoos.go using 'go generate'. DO NOT EDIT.
+// Code generated by gengoarch.go using 'go generate'. DO NOT EDIT.
 
 //go:build amd64
 // +build amd64
 
-package sys
+package goarch
 
 const GOARCH = `amd64`
 
diff --git a/src/runtime/internal/sys/zgoarch_arm.go b/src/internal/goarch/zgoarch_arm.go
similarity index 87%
rename from src/runtime/internal/sys/zgoarch_arm.go
rename to src/internal/goarch/zgoarch_arm.go
index b64a69c9b4..9d388b0554 100644
--- a/src/runtime/internal/sys/zgoarch_arm.go
+++ b/src/internal/goarch/zgoarch_arm.go
@@ -1,9 +1,9 @@
-// Code generated by gengoos.go using 'go generate'. DO NOT EDIT.
+// Code generated by gengoarch.go using 'go generate'. DO NOT EDIT.
 
 //go:build arm
 // +build arm
 
-package sys
+package goarch
 
 const GOARCH = `arm`
 
diff --git a/src/runtime/internal/sys/zgoarch_arm64.go b/src/internal/goarch/zgoarch_arm64.go
similarity index 87%
rename from src/runtime/internal/sys/zgoarch_arm64.go
rename to src/internal/goarch/zgoarch_arm64.go
index de6f85347b..a375ac8076 100644
--- a/src/runtime/internal/sys/zgoarch_arm64.go
+++ b/src/internal/goarch/zgoarch_arm64.go
@@ -1,9 +1,9 @@
-// Code generated by gengoos.go using 'go generate'. DO NOT EDIT.
+// Code generated by gengoarch.go using 'go generate'. DO NOT EDIT.
 
 //go:build arm64
 // +build arm64
 
-package sys
+package goarch
 
 const GOARCH = `arm64`
 
diff --git a/src/runtime/internal/sys/zgoarch_arm64be.go b/src/internal/goarch/zgoarch_arm64be.go
similarity index 87%
rename from src/runtime/internal/sys/zgoarch_arm64be.go
rename to src/internal/goarch/zgoarch_arm64be.go
index b762bb069f..6fcc4f6bfa 100644
--- a/src/runtime/internal/sys/zgoarch_arm64be.go
+++ b/src/internal/goarch/zgoarch_arm64be.go
@@ -1,9 +1,9 @@
-// Code generated by gengoos.go using 'go generate'. DO NOT EDIT.
+// Code generated by gengoarch.go using 'go generate'. DO NOT EDIT.
 
 //go:build arm64be
 // +build arm64be
 
-package sys
+package goarch
 
 const GOARCH = `arm64be`
 
diff --git a/src/runtime/internal/sys/zgoarch_armbe.go b/src/internal/goarch/zgoarch_armbe.go
similarity index 87%
rename from src/runtime/internal/sys/zgoarch_armbe.go
rename to src/internal/goarch/zgoarch_armbe.go
index e5297e4b16..a3ac487d80 100644
--- a/src/runtime/internal/sys/zgoarch_armbe.go
+++ b/src/internal/goarch/zgoarch_armbe.go
@@ -1,9 +1,9 @@
-// Code generated by gengoos.go using 'go generate'. DO NOT EDIT.
+// Code generated by gengoarch.go using 'go generate'. DO NOT EDIT.
 
 //go:build armbe
 // +build armbe
 
-package sys
+package goarch
 
 const GOARCH = `armbe`
 
diff --git a/src/runtime/internal/sys/zgoarch_mips.go b/src/internal/goarch/zgoarch_mips.go
similarity index 87%
rename from src/runtime/internal/sys/zgoarch_mips.go
rename to src/internal/goarch/zgoarch_mips.go
index b5f4ed390c..00cfd90c3b 100644
--- a/src/runtime/internal/sys/zgoarch_mips.go
+++ b/src/internal/goarch/zgoarch_mips.go
@@ -1,9 +1,9 @@
-// Code generated by gengoos.go using 'go generate'. DO NOT EDIT.
+// Code generated by gengoarch.go using 'go generate'. DO NOT EDIT.
 
 //go:build mips
 // +build mips
 
-package sys
+package goarch
 
 const GOARCH = `mips`
 
diff --git a/src/runtime/internal/sys/zgoarch_mips64.go b/src/internal/goarch/zgoarch_mips64.go
similarity index 87%
rename from src/runtime/internal/sys/zgoarch_mips64.go
rename to src/internal/goarch/zgoarch_mips64.go
index 73777cceb2..947db612eb 100644
--- a/src/runtime/internal/sys/zgoarch_mips64.go
+++ b/src/internal/goarch/zgoarch_mips64.go
@@ -1,9 +1,9 @@
-// Code generated by gengoos.go using 'go generate'. DO NOT EDIT.
+// Code generated by gengoarch.go using 'go generate'. DO NOT EDIT.
 
 //go:build mips64
 // +build mips64
 
-package sys
+package goarch
 
 const GOARCH = `mips64`
 
diff --git a/src/runtime/internal/sys/zgoarch_mips64le.go b/src/internal/goarch/zgoarch_mips64le.go
similarity index 87%
rename from src/runtime/internal/sys/zgoarch_mips64le.go
rename to src/internal/goarch/zgoarch_mips64le.go
index 0c81c36c09..35ffbe2d3f 100644
--- a/src/runtime/internal/sys/zgoarch_mips64le.go
+++ b/src/internal/goarch/zgoarch_mips64le.go
@@ -1,9 +1,9 @@
-// Code generated by gengoos.go using 'go generate'. DO NOT EDIT.
+// Code generated by gengoarch.go using 'go generate'. DO NOT EDIT.
 
 //go:build mips64le
 // +build mips64le
 
-package sys
+package goarch
 
 const GOARCH = `mips64le`
 
diff --git a/src/runtime/internal/sys/zgoarch_mips64p32.go b/src/internal/goarch/zgoarch_mips64p32.go
similarity index 87%
rename from src/runtime/internal/sys/zgoarch_mips64p32.go
rename to src/internal/goarch/zgoarch_mips64p32.go
index d63ce27d24..c7c712032b 100644
--- a/src/runtime/internal/sys/zgoarch_mips64p32.go
+++ b/src/internal/goarch/zgoarch_mips64p32.go
@@ -1,9 +1,9 @@
-// Code generated by gengoos.go using 'go generate'. DO NOT EDIT.
+// Code generated by gengoarch.go using 'go generate'. DO NOT EDIT.
 
 //go:build mips64p32
 // +build mips64p32
 
-package sys
+package goarch
 
 const GOARCH = `mips64p32`
 
diff --git a/src/runtime/internal/sys/zgoarch_mips64p32le.go b/src/internal/goarch/zgoarch_mips64p32le.go
similarity index 87%
rename from src/runtime/internal/sys/zgoarch_mips64p32le.go
rename to src/internal/goarch/zgoarch_mips64p32le.go
index 2d577890b2..f605a6ff78 100644
--- a/src/runtime/internal/sys/zgoarch_mips64p32le.go
+++ b/src/internal/goarch/zgoarch_mips64p32le.go
@@ -1,9 +1,9 @@
-// Code generated by gengoos.go using 'go generate'. DO NOT EDIT.
+// Code generated by gengoarch.go using 'go generate'. DO NOT EDIT.
 
 //go:build mips64p32le
 // +build mips64p32le
 
-package sys
+package goarch
 
 const GOARCH = `mips64p32le`
 
diff --git a/src/runtime/internal/sys/zgoarch_mipsle.go b/src/internal/goarch/zgoarch_mipsle.go
similarity index 87%
rename from src/runtime/internal/sys/zgoarch_mipsle.go
rename to src/internal/goarch/zgoarch_mipsle.go
index 8af919d03a..56e24dc7b3 100644
--- a/src/runtime/internal/sys/zgoarch_mipsle.go
+++ b/src/internal/goarch/zgoarch_mipsle.go
@@ -1,9 +1,9 @@
-// Code generated by gengoos.go using 'go generate'. DO NOT EDIT.
+// Code generated by gengoarch.go using 'go generate'. DO NOT EDIT.
 
 //go:build mipsle
 // +build mipsle
 
-package sys
+package goarch
 
 const GOARCH = `mipsle`
 
diff --git a/src/runtime/internal/sys/zgoarch_ppc.go b/src/internal/goarch/zgoarch_ppc.go
similarity index 87%
rename from src/runtime/internal/sys/zgoarch_ppc.go
rename to src/internal/goarch/zgoarch_ppc.go
index f6f12a5ddc..4617d12792 100644
--- a/src/runtime/internal/sys/zgoarch_ppc.go
+++ b/src/internal/goarch/zgoarch_ppc.go
@@ -1,9 +1,9 @@
-// Code generated by gengoos.go using 'go generate'. DO NOT EDIT.
+// Code generated by gengoarch.go using 'go generate'. DO NOT EDIT.
 
 //go:build ppc
 // +build ppc
 
-package sys
+package goarch
 
 const GOARCH = `ppc`
 
diff --git a/src/runtime/internal/sys/zgoarch_ppc64.go b/src/internal/goarch/zgoarch_ppc64.go
similarity index 87%
rename from src/runtime/internal/sys/zgoarch_ppc64.go
rename to src/internal/goarch/zgoarch_ppc64.go
index a8379601f4..f3cb16e9b6 100644
--- a/src/runtime/internal/sys/zgoarch_ppc64.go
+++ b/src/internal/goarch/zgoarch_ppc64.go
@@ -1,9 +1,9 @@
-// Code generated by gengoos.go using 'go generate'. DO NOT EDIT.
+// Code generated by gengoarch.go using 'go generate'. DO NOT EDIT.
 
 //go:build ppc64
 // +build ppc64
 
-package sys
+package goarch
 
 const GOARCH = `ppc64`
 
diff --git a/src/runtime/internal/sys/zgoarch_ppc64le.go b/src/internal/goarch/zgoarch_ppc64le.go
similarity index 87%
rename from src/runtime/internal/sys/zgoarch_ppc64le.go
rename to src/internal/goarch/zgoarch_ppc64le.go
index f2ec5dcba7..b70abfb953 100644
--- a/src/runtime/internal/sys/zgoarch_ppc64le.go
+++ b/src/internal/goarch/zgoarch_ppc64le.go
@@ -1,9 +1,9 @@
-// Code generated by gengoos.go using 'go generate'. DO NOT EDIT.
+// Code generated by gengoarch.go using 'go generate'. DO NOT EDIT.
 
 //go:build ppc64le
 // +build ppc64le
 
-package sys
+package goarch
 
 const GOARCH = `ppc64le`
 
diff --git a/src/runtime/internal/sys/zgoarch_riscv.go b/src/internal/goarch/zgoarch_riscv.go
similarity index 87%
rename from src/runtime/internal/sys/zgoarch_riscv.go
rename to src/internal/goarch/zgoarch_riscv.go
index 83a3312f5f..f72973fbc5 100644
--- a/src/runtime/internal/sys/zgoarch_riscv.go
+++ b/src/internal/goarch/zgoarch_riscv.go
@@ -1,9 +1,9 @@
-// Code generated by gengoos.go using 'go generate'. DO NOT EDIT.
+// Code generated by gengoarch.go using 'go generate'. DO NOT EDIT.
 
 //go:build riscv
 // +build riscv
 
-package sys
+package goarch
 
 const GOARCH = `riscv`
 
diff --git a/src/runtime/internal/sys/zgoarch_riscv64.go b/src/internal/goarch/zgoarch_riscv64.go
similarity index 87%
rename from src/runtime/internal/sys/zgoarch_riscv64.go
rename to src/internal/goarch/zgoarch_riscv64.go
index 1dfcc84997..5d09b63a03 100644
--- a/src/runtime/internal/sys/zgoarch_riscv64.go
+++ b/src/internal/goarch/zgoarch_riscv64.go
@@ -1,9 +1,9 @@
-// Code generated by gengoos.go using 'go generate'. DO NOT EDIT.
+// Code generated by gengoarch.go using 'go generate'. DO NOT EDIT.
 
 //go:build riscv64
 // +build riscv64
 
-package sys
+package goarch
 
 const GOARCH = `riscv64`
 
diff --git a/src/runtime/internal/sys/zgoarch_s390.go b/src/internal/goarch/zgoarch_s390.go
similarity index 87%
rename from src/runtime/internal/sys/zgoarch_s390.go
rename to src/internal/goarch/zgoarch_s390.go
index 91aba5a0f6..0ceffe6c2e 100644
--- a/src/runtime/internal/sys/zgoarch_s390.go
+++ b/src/internal/goarch/zgoarch_s390.go
@@ -1,9 +1,9 @@
-// Code generated by gengoos.go using 'go generate'. DO NOT EDIT.
+// Code generated by gengoarch.go using 'go generate'. DO NOT EDIT.
 
 //go:build s390
 // +build s390
 
-package sys
+package goarch
 
 const GOARCH = `s390`
 
diff --git a/src/runtime/internal/sys/zgoarch_s390x.go b/src/internal/goarch/zgoarch_s390x.go
similarity index 87%
rename from src/runtime/internal/sys/zgoarch_s390x.go
rename to src/internal/goarch/zgoarch_s390x.go
index edce50234e..142bc0f1e3 100644
--- a/src/runtime/internal/sys/zgoarch_s390x.go
+++ b/src/internal/goarch/zgoarch_s390x.go
@@ -1,9 +1,9 @@
-// Code generated by gengoos.go using 'go generate'. DO NOT EDIT.
+// Code generated by gengoarch.go using 'go generate'. DO NOT EDIT.
 
 //go:build s390x
 // +build s390x
 
-package sys
+package goarch
 
 const GOARCH = `s390x`
 
diff --git a/src/runtime/internal/sys/zgoarch_sparc.go b/src/internal/goarch/zgoarch_sparc.go
similarity index 87%
rename from src/runtime/internal/sys/zgoarch_sparc.go
rename to src/internal/goarch/zgoarch_sparc.go
index 5ae9560ab0..62452b9d38 100644
--- a/src/runtime/internal/sys/zgoarch_sparc.go
+++ b/src/internal/goarch/zgoarch_sparc.go
@@ -1,9 +1,9 @@
-// Code generated by gengoos.go using 'go generate'. DO NOT EDIT.
+// Code generated by gengoarch.go using 'go generate'. DO NOT EDIT.
 
 //go:build sparc
 // +build sparc
 
-package sys
+package goarch
 
 const GOARCH = `sparc`
 
diff --git a/src/runtime/internal/sys/zgoarch_sparc64.go b/src/internal/goarch/zgoarch_sparc64.go
similarity index 87%
rename from src/runtime/internal/sys/zgoarch_sparc64.go
rename to src/internal/goarch/zgoarch_sparc64.go
index e2a0134aff..5149507917 100644
--- a/src/runtime/internal/sys/zgoarch_sparc64.go
+++ b/src/internal/goarch/zgoarch_sparc64.go
@@ -1,9 +1,9 @@
-// Code generated by gengoos.go using 'go generate'. DO NOT EDIT.
+// Code generated by gengoarch.go using 'go generate'. DO NOT EDIT.
 
 //go:build sparc64
 // +build sparc64
 
-package sys
+package goarch
 
 const GOARCH = `sparc64`
 
diff --git a/src/runtime/internal/sys/zgoarch_wasm.go b/src/internal/goarch/zgoarch_wasm.go
similarity index 87%
rename from src/runtime/internal/sys/zgoarch_wasm.go
rename to src/internal/goarch/zgoarch_wasm.go
index 52e85dea37..fd25e93e74 100644
--- a/src/runtime/internal/sys/zgoarch_wasm.go
+++ b/src/internal/goarch/zgoarch_wasm.go
@@ -1,9 +1,9 @@
-// Code generated by gengoos.go using 'go generate'. DO NOT EDIT.
+// Code generated by gengoarch.go using 'go generate'. DO NOT EDIT.
 
 //go:build wasm
 // +build wasm
 
-package sys
+package goarch
 
 const GOARCH = `wasm`
 
diff --git a/src/runtime/internal/sys/gengoos.go b/src/internal/goos/gengoos.go
similarity index 59%
rename from src/runtime/internal/sys/gengoos.go
rename to src/internal/goos/gengoos.go
index ffe962f71d..ebcdfec3ba 100644
--- a/src/runtime/internal/sys/gengoos.go
+++ b/src/internal/goos/gengoos.go
@@ -16,17 +16,14 @@ import (
 	"strings"
 )
 
-var gooses, goarches []string
+var gooses []string
 
 func main() {
-	data, err := os.ReadFile("../../../go/build/syslist.go")
+	data, err := os.ReadFile("../../go/build/syslist.go")
 	if err != nil {
 		log.Fatal(err)
 	}
-	const (
-		goosPrefix   = `const goosList = `
-		goarchPrefix = `const goarchList = `
-	)
+	const goosPrefix = `const goosList = `
 	for _, line := range strings.Split(string(data), "\n") {
 		if strings.HasPrefix(line, goosPrefix) {
 			text, err := strconv.Unquote(strings.TrimPrefix(line, goosPrefix))
@@ -35,13 +32,6 @@ func main() {
 			}
 			gooses = strings.Fields(text)
 		}
-		if strings.HasPrefix(line, goarchPrefix) {
-			text, err := strconv.Unquote(strings.TrimPrefix(line, goarchPrefix))
-			if err != nil {
-				log.Fatalf("parsing goarchList: %v", err)
-			}
-			goarches = strings.Fields(text)
-		}
 	}
 
 	for _, target := range gooses {
@@ -63,7 +53,7 @@ func main() {
 		fmt.Fprintf(&buf, "// Code generated by gengoos.go using 'go generate'. DO NOT EDIT.\n\n")
 		fmt.Fprintf(&buf, "//go:build %s\n", strings.Join(tags, " && "))
 		fmt.Fprintf(&buf, "// +build %s\n\n", strings.Join(tags, ","))
-		fmt.Fprintf(&buf, "package sys\n\n")
+		fmt.Fprintf(&buf, "package goos\n\n")
 		fmt.Fprintf(&buf, "const GOOS = `%s`\n\n", target)
 		for _, goos := range gooses {
 			value := 0
@@ -77,27 +67,4 @@ func main() {
 			log.Fatal(err)
 		}
 	}
-
-	for _, target := range goarches {
-		if target == "amd64p32" {
-			continue
-		}
-		var buf bytes.Buffer
-		fmt.Fprintf(&buf, "// Code generated by gengoos.go using 'go generate'. DO NOT EDIT.\n\n")
-		fmt.Fprintf(&buf, "//go:build %s\n", target)
-		fmt.Fprintf(&buf, "// +build %s\n\n", target) // must explicitly include target for bootstrapping purposes
-		fmt.Fprintf(&buf, "package sys\n\n")
-		fmt.Fprintf(&buf, "const GOARCH = `%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 := os.WriteFile("zgoarch_"+target+".go", buf.Bytes(), 0666)
-		if err != nil {
-			log.Fatal(err)
-		}
-	}
 }
diff --git a/src/internal/goos/goos.go b/src/internal/goos/goos.go
new file mode 100644
index 0000000000..332cf51e5d
--- /dev/null
+++ b/src/internal/goos/goos.go
@@ -0,0 +1,12 @@
+// 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 goos contains GOOS-specific constants.
+package goos
+
+// The next line makes 'go generate' write the zgoos*.go files with
+// per-OS information, including constants named Goos$GOOS for every
+// known GOOS. The constant is 1 on the current system, 0 otherwise;
+// multiplying by them is useful for defining GOOS-specific constants.
+//go:generate go run gengoos.go
diff --git a/src/runtime/internal/sys/zgoos_aix.go b/src/internal/goos/zgoos_aix.go
similarity index 97%
rename from src/runtime/internal/sys/zgoos_aix.go
rename to src/internal/goos/zgoos_aix.go
index f3b907471f..f453a8a0a8 100644
--- a/src/runtime/internal/sys/zgoos_aix.go
+++ b/src/internal/goos/zgoos_aix.go
@@ -3,7 +3,7 @@
 //go:build aix
 // +build aix
 
-package sys
+package goos
 
 const GOOS = `aix`
 
diff --git a/src/runtime/internal/sys/zgoos_android.go b/src/internal/goos/zgoos_android.go
similarity index 97%
rename from src/runtime/internal/sys/zgoos_android.go
rename to src/internal/goos/zgoos_android.go
index e28baf7c48..d90c04f758 100644
--- a/src/runtime/internal/sys/zgoos_android.go
+++ b/src/internal/goos/zgoos_android.go
@@ -3,7 +3,7 @@
 //go:build android
 // +build android
 
-package sys
+package goos
 
 const GOOS = `android`
 
diff --git a/src/runtime/internal/sys/zgoos_darwin.go b/src/internal/goos/zgoos_darwin.go
similarity index 97%
rename from src/runtime/internal/sys/zgoos_darwin.go
rename to src/internal/goos/zgoos_darwin.go
index 3c7f7b543e..18f6c28b12 100644
--- a/src/runtime/internal/sys/zgoos_darwin.go
+++ b/src/internal/goos/zgoos_darwin.go
@@ -3,7 +3,7 @@
 //go:build !ios && darwin
 // +build !ios,darwin
 
-package sys
+package goos
 
 const GOOS = `darwin`
 
diff --git a/src/runtime/internal/sys/zgoos_dragonfly.go b/src/internal/goos/zgoos_dragonfly.go
similarity index 97%
rename from src/runtime/internal/sys/zgoos_dragonfly.go
rename to src/internal/goos/zgoos_dragonfly.go
index f844d29e2a..a658d1d07f 100644
--- a/src/runtime/internal/sys/zgoos_dragonfly.go
+++ b/src/internal/goos/zgoos_dragonfly.go
@@ -3,7 +3,7 @@
 //go:build dragonfly
 // +build dragonfly
 
-package sys
+package goos
 
 const GOOS = `dragonfly`
 
diff --git a/src/runtime/internal/sys/zgoos_freebsd.go b/src/internal/goos/zgoos_freebsd.go
similarity index 97%
rename from src/runtime/internal/sys/zgoos_freebsd.go
rename to src/internal/goos/zgoos_freebsd.go
index 8999a2797a..2534eb8c6f 100644
--- a/src/runtime/internal/sys/zgoos_freebsd.go
+++ b/src/internal/goos/zgoos_freebsd.go
@@ -3,7 +3,7 @@
 //go:build freebsd
 // +build freebsd
 
-package sys
+package goos
 
 const GOOS = `freebsd`
 
diff --git a/src/runtime/internal/sys/zgoos_hurd.go b/src/internal/goos/zgoos_hurd.go
similarity index 97%
rename from src/runtime/internal/sys/zgoos_hurd.go
rename to src/internal/goos/zgoos_hurd.go
index a546488bf8..3fefb1fbb1 100644
--- a/src/runtime/internal/sys/zgoos_hurd.go
+++ b/src/internal/goos/zgoos_hurd.go
@@ -3,7 +3,7 @@
 //go:build hurd
 // +build hurd
 
-package sys
+package goos
 
 const GOOS = `hurd`
 
diff --git a/src/runtime/internal/sys/zgoos_illumos.go b/src/internal/goos/zgoos_illumos.go
similarity index 97%
rename from src/runtime/internal/sys/zgoos_illumos.go
rename to src/internal/goos/zgoos_illumos.go
index 02a4ca06e8..77495a3369 100644
--- a/src/runtime/internal/sys/zgoos_illumos.go
+++ b/src/internal/goos/zgoos_illumos.go
@@ -3,7 +3,7 @@
 //go:build illumos
 // +build illumos
 
-package sys
+package goos
 
 const GOOS = `illumos`
 
diff --git a/src/runtime/internal/sys/zgoos_ios.go b/src/internal/goos/zgoos_ios.go
similarity index 97%
rename from src/runtime/internal/sys/zgoos_ios.go
rename to src/internal/goos/zgoos_ios.go
index 033eec623d..92820fe77e 100644
--- a/src/runtime/internal/sys/zgoos_ios.go
+++ b/src/internal/goos/zgoos_ios.go
@@ -3,7 +3,7 @@
 //go:build ios
 // +build ios
 
-package sys
+package goos
 
 const GOOS = `ios`
 
diff --git a/src/runtime/internal/sys/zgoos_js.go b/src/internal/goos/zgoos_js.go
similarity index 97%
rename from src/runtime/internal/sys/zgoos_js.go
rename to src/internal/goos/zgoos_js.go
index 28226ad60a..6331a5c3f1 100644
--- a/src/runtime/internal/sys/zgoos_js.go
+++ b/src/internal/goos/zgoos_js.go
@@ -3,7 +3,7 @@
 //go:build js
 // +build js
 
-package sys
+package goos
 
 const GOOS = `js`
 
diff --git a/src/runtime/internal/sys/zgoos_linux.go b/src/internal/goos/zgoos_linux.go
similarity index 97%
rename from src/runtime/internal/sys/zgoos_linux.go
rename to src/internal/goos/zgoos_linux.go
index 01546e4b9f..aa4e2d3145 100644
--- a/src/runtime/internal/sys/zgoos_linux.go
+++ b/src/internal/goos/zgoos_linux.go
@@ -3,7 +3,7 @@
 //go:build !android && linux
 // +build !android,linux
 
-package sys
+package goos
 
 const GOOS = `linux`
 
diff --git a/src/runtime/internal/sys/zgoos_netbsd.go b/src/internal/goos/zgoos_netbsd.go
similarity index 97%
rename from src/runtime/internal/sys/zgoos_netbsd.go
rename to src/internal/goos/zgoos_netbsd.go
index 9d658b20ee..39635104c0 100644
--- a/src/runtime/internal/sys/zgoos_netbsd.go
+++ b/src/internal/goos/zgoos_netbsd.go
@@ -3,7 +3,7 @@
 //go:build netbsd
 // +build netbsd
 
-package sys
+package goos
 
 const GOOS = `netbsd`
 
diff --git a/src/runtime/internal/sys/zgoos_openbsd.go b/src/internal/goos/zgoos_openbsd.go
similarity index 97%
rename from src/runtime/internal/sys/zgoos_openbsd.go
rename to src/internal/goos/zgoos_openbsd.go
index 0f55454a95..61d4ac8bb0 100644
--- a/src/runtime/internal/sys/zgoos_openbsd.go
+++ b/src/internal/goos/zgoos_openbsd.go
@@ -3,7 +3,7 @@
 //go:build openbsd
 // +build openbsd
 
-package sys
+package goos
 
 const GOOS = `openbsd`
 
diff --git a/src/runtime/internal/sys/zgoos_plan9.go b/src/internal/goos/zgoos_plan9.go
similarity index 97%
rename from src/runtime/internal/sys/zgoos_plan9.go
rename to src/internal/goos/zgoos_plan9.go
index d0347464d6..7f0dc2fa04 100644
--- a/src/runtime/internal/sys/zgoos_plan9.go
+++ b/src/internal/goos/zgoos_plan9.go
@@ -3,7 +3,7 @@
 //go:build plan9
 // +build plan9
 
-package sys
+package goos
 
 const GOOS = `plan9`
 
diff --git a/src/runtime/internal/sys/zgoos_solaris.go b/src/internal/goos/zgoos_solaris.go
similarity index 97%
rename from src/runtime/internal/sys/zgoos_solaris.go
rename to src/internal/goos/zgoos_solaris.go
index 05c3007e2c..7497324a4f 100644
--- a/src/runtime/internal/sys/zgoos_solaris.go
+++ b/src/internal/goos/zgoos_solaris.go
@@ -3,7 +3,7 @@
 //go:build !illumos && solaris
 // +build !illumos,solaris
 
-package sys
+package goos
 
 const GOOS = `solaris`
 
diff --git a/src/runtime/internal/sys/zgoos_windows.go b/src/internal/goos/zgoos_windows.go
similarity index 97%
rename from src/runtime/internal/sys/zgoos_windows.go
rename to src/internal/goos/zgoos_windows.go
index 7d07fa3a45..e316b80c82 100644
--- a/src/runtime/internal/sys/zgoos_windows.go
+++ b/src/internal/goos/zgoos_windows.go
@@ -3,7 +3,7 @@
 //go:build windows
 // +build windows
 
-package sys
+package goos
 
 const GOOS = `windows`
 
diff --git a/src/runtime/internal/sys/zgoos_zos.go b/src/internal/goos/zgoos_zos.go
similarity index 97%
rename from src/runtime/internal/sys/zgoos_zos.go
rename to src/internal/goos/zgoos_zos.go
index d6e5b9b0cb..26471f4f36 100644
--- a/src/runtime/internal/sys/zgoos_zos.go
+++ b/src/internal/goos/zgoos_zos.go
@@ -3,7 +3,7 @@
 //go:build zos
 // +build zos
 
-package sys
+package goos
 
 const GOOS = `zos`
 
diff --git a/src/runtime/internal/sys/consts.go b/src/runtime/internal/sys/consts.go
new file mode 100644
index 0000000000..815f789380
--- /dev/null
+++ b/src/runtime/internal/sys/consts.go
@@ -0,0 +1,109 @@
+// 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
+
+import (
+	"internal/goarch"
+	"internal/goos"
+)
+
+type ArchFamilyType = goarch.ArchFamilyType
+
+const (
+	AMD64   = goarch.AMD64
+	ARM     = goarch.ARM
+	ARM64   = goarch.ARM64
+	I386    = goarch.I386
+	MIPS    = goarch.MIPS
+	MIPS64  = goarch.MIPS64
+	PPC64   = goarch.PPC64
+	RISCV64 = goarch.RISCV64
+	S390X   = goarch.S390X
+	WASM    = goarch.WASM
+)
+
+// PtrSize is the size of a pointer in bytes - unsafe.Sizeof(uintptr(0)) but as an ideal constant.
+// It is also the size of the machine's native word size (that is, 4 on 32-bit systems, 8 on 64-bit).
+const PtrSize = goarch.PtrSize
+
+// ArchFamily is the architecture family (AMD64, ARM, ...)
+const ArchFamily ArchFamilyType = goarch.ArchFamily
+
+// AIX requires a larger stack for syscalls.
+const StackGuardMultiplier = StackGuardMultiplierDefault*(1-goos.GoosAix) + 2*goos.GoosAix
+
+// BigEndian reports whether the architecture is big-endian.
+const BigEndian = goarch.BigEndian
+
+// DefaultPhysPageSize is the default physical page size.
+const DefaultPhysPageSize = goarch.DefaultPhysPageSize
+
+// PCQuantum is the minimal unit for a program counter (1 on x86, 4 on most other systems).
+// The various PC tables record PC deltas pre-divided by PCQuantum.
+const PCQuantum = goarch.PCQuantum
+
+// Int64Align is the required alignment for a 64-bit integer (4 on 32-bit systems, 8 on 64-bit).
+const Int64Align = goarch.PtrSize
+
+// MinFrameSize is the size of the system-reserved words at the bottom
+// of a frame (just above the architectural stack pointer).
+// It is zero on x86 and PtrSize on most non-x86 (LR-based) systems.
+// On PowerPC it is larger, to cover three more reserved words:
+// the compiler word, the link editor word, and the TOC save word.
+const MinFrameSize = goarch.MinFrameSize
+
+// StackAlign is the required alignment of the SP register.
+// The stack must be at least word aligned, but some architectures require more.
+const StackAlign = goarch.StackAlign
+
+const GOARCH = goarch.GOARCH
+
+const (
+	Goarch386         = goarch.Goarch386
+	GoarchAmd64       = goarch.GoarchAmd64
+	GoarchAmd64p32    = goarch.GoarchAmd64p32
+	GoarchArm         = goarch.GoarchArm
+	GoarchArmbe       = goarch.GoarchArmbe
+	GoarchArm64       = goarch.GoarchArm64
+	GoarchArm64be     = goarch.GoarchArm64be
+	GoarchPpc64       = goarch.GoarchPpc64
+	GoarchPpc64le     = goarch.GoarchPpc64le
+	GoarchMips        = goarch.GoarchMips
+	GoarchMipsle      = goarch.GoarchMipsle
+	GoarchMips64      = goarch.GoarchMips64
+	GoarchMips64le    = goarch.GoarchMips64le
+	GoarchMips64p32   = goarch.GoarchMips64p32
+	GoarchMips64p32le = goarch.GoarchMips64p32le
+	GoarchPpc         = goarch.GoarchPpc
+	GoarchRiscv       = goarch.GoarchRiscv
+	GoarchRiscv64     = goarch.GoarchRiscv64
+	GoarchS390        = goarch.GoarchS390
+	GoarchS390x       = goarch.GoarchS390x
+	GoarchSparc       = goarch.GoarchSparc
+	GoarchSparc64     = goarch.GoarchSparc64
+	GoarchWasm        = goarch.GoarchWasm
+)
+
+const GOOS = goos.GOOS
+
+const (
+	GoosAix       = goos.GoosAix
+	GoosAndroid   = goos.GoosAndroid
+	GoosDarwin    = goos.GoosDarwin
+	GoosDragonfly = goos.GoosDragonfly
+	GoosFreebsd   = goos.GoosFreebsd
+	GoosHurd      = goos.GoosHurd
+	GoosIllumos   = goos.GoosIllumos
+	GoosIos       = goos.GoosIos
+	GoosJs        = goos.GoosJs
+	GoosLinux     = goos.GoosLinux
+	GoosNacl      = goos.GoosNacl
+	GoosNetbsd    = goos.GoosNetbsd
+	GoosOpenbsd   = goos.GoosOpenbsd
+	GoosPlan9     = goos.GoosPlan9
+	GoosSolaris   = goos.GoosSolaris
+	GoosWindows   = goos.GoosWindows
+	GoosZos       = goos.GoosZos
+)
diff --git a/src/runtime/internal/sys/sys.go b/src/runtime/internal/sys/sys.go
index 9d9ac4507f..694101d36f 100644
--- a/src/runtime/internal/sys/sys.go
+++ b/src/runtime/internal/sys/sys.go
@@ -5,11 +5,3 @@
 // package sys contains system- and configuration- and architecture-specific
 // constants used by the runtime.
 package sys
-
-// The next line makes 'go generate' write the zgo*.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