cmd/link: add DT_NEEDED for all 64-bit ELF dynimplib

Also change the relevant test to be tested on the linux-arm64 platform
as well.

Fixes #49789

Change-Id: Id2eac7a45279f037957442862f8ed63838b8e929
Reviewed-on: https://go-review.googlesource.com/c/go/+/366855
Trust: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Trust: Than McIntosh <thanm@google.com>
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>

AUTHORS

@@ -570,6 +570,7 @@ Hootsuite Inc.
 Hsin-Ho Yeh <yhh92u@gmail.com>
 Hu Keping <hukeping@huawei.com>
 Hugues Bruant <hugues.bruant@gmail.com>
+HyperConnect Inc.
 Ian Gudger <ian@loosescre.ws>
 Ian Kent <iankent85@gmail.com>
 IBM

CONTRIBUTORS

@@ -451,6 +451,7 @@ Bryan Ford <brynosaurus@gmail.com>
 Bryan Heden <b.heden@gmail.com>
 Bulat Gaifullin <gaifullinbf@gmail.com>
 Burak Guven <bguven@gmail.com>
+Byoungchan Lee <daniel.l@hpcnt.com>
 Caine Tighe <arctanofyourface@gmail.com>
 Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
 Caleb Martinez <accounts@calebmartinez.com>

src/cmd/link/internal/ld/elf.go

@@ -2258,7 +2258,7 @@ func elfadddynsym(ldr *loader.Loader, target *Target, syms *ArchSyms, s loader.S
 
 		dil := ldr.SymDynimplib(s)
 
-		if target.Arch.Family == sys.AMD64 && !cgoeDynamic && dil != "" && !seenlib[dil] {
+		if !cgoeDynamic && dil != "" && !seenlib[dil] {
 			du := ldr.MakeSymbolUpdater(syms.Dynamic)
 			Elfwritedynent(target.Arch, du, elf.DT_NEEDED, uint64(dstru.Addstring(dil)))
 			seenlib[dil] = true

src/cmd/link/internal/ld/elf_test.go

@@ -86,7 +86,7 @@ func TestNoDuplicateNeededEntries(t *testing.T) {
 	// across the board given the nature of the test).
 	pair := runtime.GOOS + "-" + runtime.GOARCH
 	switch pair {
-	case "linux-amd64", "freebsd-amd64", "openbsd-amd64":
+	case "linux-amd64", "linux-arm64", "freebsd-amd64", "openbsd-amd64":
 	default:
 		t.Skip("no need for test on " + pair)
 	}