Function TestObjFile

internal/binutils/binutils_test.go:331–382

(t *testing.T)

}

func TestObjFile(t *testing.T) {
	// If this test fails, check the address for main function in testdata/exe_linux_64
	// using the command 'nm -n '. Update the hardcoded addresses below to match
	// the addresses from the output.
	skipUnlessLinuxAmd64(t)
	for _, tc := range []struct {
		desc                 string
		start, limit, offset uint64
		addr                 uint64
	}{
		{"fixed load address", 0x400000, 0x4006fc, 0, 0x40052d},
		// True user-mode ASLR binaries are ET_DYN rather than ET_EXEC so this case
		// is a bit artificial except that it approximates the
		// vmlinux-with-kernel-ASLR case where the binary *is* ET_EXEC.
		{"simulated ASLR address", 0x500000, 0x5006fc, 0, 0x50052d},
	} {
		t.Run(tc.desc, func(t *testing.T) {
			bu := &Binutils{}
			f, err := bu.Open(filepath.Join("testdata", "exe_linux_64"), tc.start, tc.limit, tc.offset, "")
			if err != nil {
				t.Fatalf("Open: unexpected error %v", err)
			}
			defer f.Close()
			syms, err := f.Symbols(regexp.MustCompile("main"), 0)
			if err != nil {
				t.Fatalf("Symbols: unexpected error %v", err)
			}

			m := findSymbol(syms, "main")
			if m == nil {
				t.Fatalf("Symbols: did not find main")
			}
			addr, err := f.ObjAddr(tc.addr)
			if err != nil {
				t.Fatalf("ObjAddr(%x) failed: %v", tc.addr, err)
			}
			if addr != m.Start {
				t.Errorf("ObjAddr(%x) got %x, want %x", tc.addr, addr, m.Start)
			}
			gotFrames, err := f.SourceLine(tc.addr)
			if err != nil {
				t.Fatalf("SourceLine: unexpected error %v", err)
			}
			wantFrames := []plugin.Frame{
				{Func: "main", File: "/tmp/hello.c", Line: 3, StartLine: 3},
			}
			if !reflect.DeepEqual(gotFrames, wantFrames) {
				t.Fatalf("SourceLine for main: got %v; want %v\n", gotFrames, wantFrames)
			}
		})
	}
}

func TestMachoFiles(t *testing.T) {
	// If this test fails, check the address for main function in testdata/exe_mac_64