cmd/dist, misc/cgo: enable tests for aix/ppc64

Some cgo tests aren't yet available on aix/ppc64.
-shared and -static don't work as expected and will be fixed latter.

Updates #30565

Change-Id: Ic59cabe685cb1cbdf89a8d1d1a1d2c4b0e8ef442
Reviewed-on: https://go-review.googlesource.com/c/go/+/164018
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

misc/cgo/test/cthread_unix.c

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build darwin dragonfly freebsd linux netbsd openbsd solaris
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
 
 #include <pthread.h>
 #include "_cgo_export.h"

misc/cgo/test/issue18146.go

@@ -46,6 +46,8 @@ func test18146(t *testing.T) {
 	switch runtime.GOOS {
 	default:
 		setNproc = false
+	case "aix":
+		nproc = 9
 	case "linux":
 		nproc = 6
 	case "darwin", "dragonfly", "freebsd", "netbsd", "openbsd":

misc/cgo/testso/so_test.go

@@ -25,7 +25,12 @@ func requireTestSOSupported(t *testing.T) {
 			t.Skip("No exec facility on iOS.")
 		}
 	case "ppc64":
-		t.Skip("External linking not implemented on ppc64 (issue #8912).")
+		if runtime.GOOS == "linux" {
+			t.Skip("External linking not implemented on aix/ppc64 (issue #8912).")
+		}
+		if runtime.GOOS == "aix" {
+			t.Skip("Using shared object isn't yet available on aix/ppc64 (issue #30565)")
+		}
 	case "mips64le", "mips64":
 		t.Skip("External linking not implemented on mips64.")
 	}

misc/cgo/testsovar/so_test.go

@@ -25,7 +25,12 @@ func requireTestSOSupported(t *testing.T) {
 			t.Skip("No exec facility on iOS.")
 		}
 	case "ppc64":
-		t.Skip("External linking not implemented on ppc64 (issue #8912).")
+		if runtime.GOOS == "linux" {
+			t.Skip("External linking not implemented on aix/ppc64 (issue #8912).")
+		}
+		if runtime.GOOS == "aix" {
+			t.Skip("Using shared object isn't yet available on aix/ppc64 (issue #30565)")
+		}
 	case "mips64le", "mips64":
 		t.Skip("External linking not implemented on mips64.")
 	}

src/cmd/dist/test.go

@@ -877,7 +877,8 @@ func (t *tester) out(v string) {
 func (t *tester) extLink() bool {
 	pair := gohostos + "-" + goarch
 	switch pair {
-	case "android-arm",
+	case "aix-ppc64",
+		"android-arm",
 		"darwin-386", "darwin-amd64", "darwin-arm", "darwin-arm64",
 		"dragonfly-amd64",
 		"freebsd-386", "freebsd-amd64", "freebsd-arm",
@@ -912,6 +913,10 @@ func (t *tester) internalLink() bool {
 	if goarch == "arm64" || goarch == "mips64" || goarch == "mips64le" || goarch == "mips" || goarch == "mipsle" {
 		return false
 	}
+	if goos == "aix" {
+		// linkmode=internal isn't supported.
+		return false
+	}
 	return true
 }
 
@@ -1013,7 +1018,8 @@ func (t *tester) cgoTest(dt *distTest) error {
 		}
 		t.addCmd(dt, "misc/cgo/test", t.goTest(), "-ldflags", "-linkmode=external")
 		t.addCmd(dt, "misc/cgo/test", t.goTest(), "-ldflags", "-linkmode=external -s")
-	case "android-arm",
+	case "aix-ppc64",
+		"android-arm",
 		"dragonfly-amd64",
 		"freebsd-386", "freebsd-amd64", "freebsd-arm",
 		"linux-386", "linux-amd64", "linux-arm", "linux-ppc64le", "linux-s390x",
@@ -1027,7 +1033,7 @@ func (t *tester) cgoTest(dt *distTest) error {
 		t.addCmd(dt, "misc/cgo/testtls", t.goTest(), "-ldflags", "-linkmode=external")
 
 		switch pair {
-		case "netbsd-386", "netbsd-amd64":
+		case "aix-ppc64", "netbsd-386", "netbsd-amd64":
 			// no static linking
 		case "freebsd-arm":
 			// -fPIC compiled tls code will use __tls_get_addr instead