cmd/nm: fix cgo tests for aix/ppc64

This commit handles AIX cgo in cmd/nm tests.

Change-Id: I6753a0102e4f2c4c7bd4d7c999f62a0cb3d2183c
Reviewed-on: https://go-review.googlesource.com/c/go/+/164017
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

src/cmd/nm/nm_cgo_test.go

@@ -20,6 +20,8 @@ func canInternalLink() bool {
 		case "arm64", "mips64", "mips64le", "mips", "mipsle", "ppc64", "ppc64le":
 			return false
 		}
+	case "aix":
+		return false
 	}
 	return true
 }

src/cmd/nm/nm_test.go

@@ -136,6 +136,11 @@ func testGoExec(t *testing.T, iscgo, isexternallinker bool) {
 		"runtime.noptrdata": "D",
 	}
 
+	if runtime.GOOS == "aix" && iscgo {
+		// pclntab is moved to .data section on AIX.
+		runtimeSyms["runtime.epclntab"] = "D"
+	}
+
 	out, err = exec.Command(testnmpath, exe).CombinedOutput()
 	if err != nil {
 		t.Fatalf("go tool nm: %v\n%s", err, string(out))
@@ -146,7 +151,10 @@ func testGoExec(t *testing.T, iscgo, isexternallinker bool) {
 			// On AIX, .data and .bss addresses are changed by the loader.
 			// Therefore, the values returned by the exec aren't the same
 			// than the ones inside the symbol table.
+			// In case of cgo, .text symbols are also changed.
 			switch code {
+			case "T", "t", "R", "r":
+				return iscgo
 			case "D", "d", "B", "b":
 				return true
 			}
@@ -267,6 +275,9 @@ func testGoLib(t *testing.T, iscgo bool) {
 		if runtime.GOOS == "darwin" || (runtime.GOOS == "windows" && runtime.GOARCH == "386") {
 			syms = append(syms, symType{"D", "_cgodata", true, false})
 			syms = append(syms, symType{"T", "_cgofunc", true, false})
+		} else if runtime.GOOS == "aix" {
+			syms = append(syms, symType{"D", "cgodata", true, false})
+			syms = append(syms, symType{"T", ".cgofunc", true, false})
 		} else {
 			syms = append(syms, symType{"D", "cgodata", true, false})
 			syms = append(syms, symType{"T", "cgofunc", true, false})