cmd/objdump: add s390x plan9 disasm support

This CL provides vendor support for s390x disassembler plan9 syntax.

cd $GOROOT/src/cmd
go get golang.org/x/arch@master
go mod tidy
go mod vendor

For #15255

Change-Id: I20c87510a1aee2d1cf2df58feb535974c4c0e3ef
Reviewed-on: https://go-review.googlesource.com/c/go/+/623075
Reviewed-by: David Chase <[email protected]>
LUCI-TryBot-Result: Go LUCI <[email protected]>
Reviewed-by: Vishwanatha HD <[email protected]>
Reviewed-by: Cherry Mui <[email protected]>

Author: srinivas-pokala

src/cmd/go.mod

@@ -4,7 +4,7 @@ go 1.24
 
 require (
 	github.com/google/pprof v0.0.0-20240722153945-304e4f0156b8
-	golang.org/x/arch v0.10.1-0.20240910142527-7874f23b9c06
+	golang.org/x/arch v0.11.1-0.20241106162200-f977c2e4e3f4
 	golang.org/x/build v0.0.0-20240722200705-b9910f320300
 	golang.org/x/mod v0.20.0
 	golang.org/x/sync v0.8.0

src/cmd/go.sum

@@ -6,8 +6,8 @@ github.com/ianlancetaylor/demangle v0.0.0-20240312041847-bd984b5ce465 h1:KwWnWVW
 github.com/ianlancetaylor/demangle v0.0.0-20240312041847-bd984b5ce465/go.mod h1:gx7rwoVhcfuVKG5uya9Hs3Sxj7EIvldVofAWIUtGouw=
 github.com/yuin/goldmark v1.6.0 h1:boZcn2GTjpsynOsC0iJHnBWa4Bi0qzfJjthwauItG68=
 github.com/yuin/goldmark v1.6.0/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
-golang.org/x/arch v0.10.1-0.20240910142527-7874f23b9c06 h1:UQRD9d43XiTfPsm0o04gmvWqcLLGkwqV+bOwtb7AP6c=
-golang.org/x/arch v0.10.1-0.20240910142527-7874f23b9c06/go.mod h1:FEVrYAQjsQXMVJ1nsMoVVXPZg6p2JE2mx8psSWTDQys=
+golang.org/x/arch v0.11.1-0.20241106162200-f977c2e4e3f4 h1:B9d6SEXeIaY1QC4c7Gsf88ratIIcxShKAlz60Urrqzw=
+golang.org/x/arch v0.11.1-0.20241106162200-f977c2e4e3f4/go.mod h1:FEVrYAQjsQXMVJ1nsMoVVXPZg6p2JE2mx8psSWTDQys=
 golang.org/x/build v0.0.0-20240722200705-b9910f320300 h1:2Cqg4LnvfD2ZpG8+6KbyYUkweWhNS3SgfcN/eeVseJ0=
 golang.org/x/build v0.0.0-20240722200705-b9910f320300/go.mod h1:YsGhg4JUVUWLzdqU2wCrtpRrOveOql6w56FLDHq/CJ4=
 golang.org/x/mod v0.20.0 h1:utOm6MM3R3dnawAiJgn0y+xvuYRsm1RKM/4giyfDgV0=

src/cmd/internal/objfile/disasm.go

@@ -421,9 +421,9 @@ func disasm_s390x(code []byte, pc uint64, lookup lookupFunc, _ binary.ByteOrder,
 		text = "?"
 	} else {
 		if gnuAsm {
-			text = fmt.Sprintf("%s", s390xasm.GNUSyntax(inst, pc))
+			text = fmt.Sprintf("%-36s // %s", s390xasm.GoSyntax(inst, pc, lookup), s390xasm.GNUSyntax(inst, pc))
 		} else {
-			text = fmt.Sprintf("%s", "Go/plan9 syntax unsupported..!!")
+			text = s390xasm.GoSyntax(inst, pc, lookup)
 		}
 	}
 	return text, size