| // 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/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/s390x" |
| "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 ld.Thearch and ld.SysArch 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.Thearch.Archinit function. |
| |
| func main() { |
| switch objabi.GOARCH { |
| default: |
| fmt.Fprintf(os.Stderr, "link: unknown architecture %q\n", objabi.GOARCH) |
| os.Exit(2) |
| case "386": |
| x86.Init() |
| case "amd64", "amd64p32": |
| amd64.Init() |
| case "arm": |
| arm.Init() |
| case "arm64": |
| arm64.Init() |
| case "mips", "mipsle": |
| mips.Init() |
| case "mips64", "mips64le": |
| mips64.Init() |
| case "ppc64", "ppc64le": |
| ppc64.Init() |
| case "s390x": |
| s390x.Init() |
| } |
| ld.Main() |
| } |