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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-28 13:18:25 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-28 13:18:25 +0000
commit109be507377fe7f6e8819ac94041d3fdcdf6fd2f (patch)
tree2806a689f8fab4a2ec9fc949830ef270a91d667d /misc/cgo/testplugin/testdata/checkdwarf
parentInitial commit. (diff)
downloadgolang-1.19-upstream.tar.xz
golang-1.19-upstream.zip
Adding upstream version 1.19.8.upstream/1.19.8upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'misc/cgo/testplugin/testdata/checkdwarf')
-rw-r--r--misc/cgo/testplugin/testdata/checkdwarf/main.go106
1 files changed, 106 insertions, 0 deletions
diff --git a/misc/cgo/testplugin/testdata/checkdwarf/main.go b/misc/cgo/testplugin/testdata/checkdwarf/main.go
new file mode 100644
index 0000000..7886c83
--- /dev/null
+++ b/misc/cgo/testplugin/testdata/checkdwarf/main.go
@@ -0,0 +1,106 @@
+// Copyright 2018 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.
+
+// Usage:
+//
+// checkdwarf <exe> <suffix>
+//
+// Opens <exe>, which must be an executable or a library and checks that
+// there is an entry in .debug_info whose name ends in <suffix>
+
+package main
+
+import (
+ "debug/dwarf"
+ "debug/elf"
+ "debug/macho"
+ "debug/pe"
+ "fmt"
+ "os"
+ "strings"
+)
+
+func usage() {
+ fmt.Fprintf(os.Stderr, "checkdwarf executable-or-library DIE-suffix\n")
+}
+
+type dwarfer interface {
+ DWARF() (*dwarf.Data, error)
+}
+
+func openElf(path string) dwarfer {
+ exe, err := elf.Open(path)
+ if err != nil {
+ return nil
+ }
+ return exe
+}
+
+func openMacho(path string) dwarfer {
+ exe, err := macho.Open(path)
+ if err != nil {
+ return nil
+ }
+ return exe
+}
+
+func openPE(path string) dwarfer {
+ exe, err := pe.Open(path)
+ if err != nil {
+ return nil
+ }
+ return exe
+}
+
+func main() {
+ if len(os.Args) != 3 {
+ usage()
+ }
+
+ exePath := os.Args[1]
+ dieSuffix := os.Args[2]
+
+ var exe dwarfer
+
+ for _, openfn := range []func(string) dwarfer{openMacho, openPE, openElf} {
+ exe = openfn(exePath)
+ if exe != nil {
+ break
+ }
+ }
+
+ if exe == nil {
+ fmt.Fprintf(os.Stderr, "could not open %s\n", exePath)
+ os.Exit(1)
+ }
+
+ data, err := exe.DWARF()
+ if err != nil {
+ fmt.Fprintf(os.Stderr, "%s: error opening DWARF: %v\n", exePath, err)
+ os.Exit(1)
+ }
+
+ rdr := data.Reader()
+ for {
+ e, err := rdr.Next()
+ if err != nil {
+ fmt.Fprintf(os.Stderr, "%s: error reading DWARF: %v\n", exePath, err)
+ os.Exit(1)
+ }
+ if e == nil {
+ break
+ }
+ name, hasname := e.Val(dwarf.AttrName).(string)
+ if !hasname {
+ continue
+ }
+ if strings.HasSuffix(name, dieSuffix) {
+ // found
+ os.Exit(0)
+ }
+ }
+
+ fmt.Fprintf(os.Stderr, "%s: no entry with a name ending in %q was found\n", exePath, dieSuffix)
+ os.Exit(1)
+}