1 files changed, 69 insertions, 0 deletions
diff --git a/src/cmd/link/main.go b/src/cmd/link/main.go
new file mode 100644
index 0000000..6b4ca97
--- /dev/null
+++ b/src/cmd/link/main.go
@@ -0,0 +1,69 @@
+// 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 main
+
+import (
+	"cmd/internal/objabi"
+	"cmd/internal/sys"
+	"cmd/link/internal/amd64"
+	"cmd/link/internal/arm"
+	"cmd/link/internal/arm64"
+	"cmd/link/internal/ld"
+	"cmd/link/internal/mips"
+	"cmd/link/internal/mips64"
+	"cmd/link/internal/ppc64"
+	"cmd/link/internal/riscv64"
+	"cmd/link/internal/s390x"
+	"cmd/link/internal/wasm"
+	"cmd/link/internal/x86"
+	"fmt"
+	"os"
+)
+
+// The bulk of the linker implementation lives in cmd/link/internal/ld.
+// Architecture-specific code lives in cmd/link/internal/GOARCH.
+//
+// Program initialization:
+//
+// Before any argument parsing is done, the Init function of relevant
+// architecture package is called. The only job done in Init is
+// configuration of the architecture-specific variables.
+//
+// Then control flow passes to ld.Main, which parses flags, makes
+// some configuration decisions, and then gives the architecture
+// packages a second chance to modify the linker's configuration
+// via the ld.Arch.Archinit function.
+
+func main() {
+	var arch *sys.Arch
+	var theArch ld.Arch
+
+	switch objabi.GOARCH {
+	default:
+		fmt.Fprintf(os.Stderr, "link: unknown architecture %q\n", objabi.GOARCH)
+		os.Exit(2)
+	case "386":
+		arch, theArch = x86.Init()
+	case "amd64":
+		arch, theArch = amd64.Init()
+	case "arm":
+		arch, theArch = arm.Init()
+	case "arm64":
+		arch, theArch = arm64.Init()
+	case "mips", "mipsle":
+		arch, theArch = mips.Init()
+	case "mips64", "mips64le":
+		arch, theArch = mips64.Init()
+	case "ppc64", "ppc64le":
+		arch, theArch = ppc64.Init()
+	case "riscv64":
+		arch, theArch = riscv64.Init()
+	case "s390x":
+		arch, theArch = s390x.Init()
+	case "wasm":
+		arch, theArch = wasm.Init()
+	}
+	ld.Main(arch, theArch)
+}