Golang程序
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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package macho
import (
"reflect"
"testing"
)
type fileTest struct {
file string
hdr FileHeader
segments []*SegmentHeader
sections []*SectionHeader
}
var fileTests = []fileTest{
{
"testdata/gcc-386-darwin-exec",
FileHeader{0xfeedface, Cpu386, 0x3, 0x2, 0xc, 0x3c0, 0x85},
[]*SegmentHeader{
{LoadCmdSegment, 0x38, "__PAGEZERO", 0x0, 0x1000, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0},
{LoadCmdSegment, 0xc0, "__TEXT", 0x1000, 0x1000, 0x0, 0x1000, 0x7, 0x5, 0x2, 0x0},
{LoadCmdSegment, 0xc0, "__DATA", 0x2000, 0x1000, 0x1000, 0x1000, 0x7, 0x3, 0x2, 0x0},
{LoadCmdSegment, 0x7c, "__IMPORT", 0x3000, 0x1000, 0x2000, 0x1000, 0x7, 0x7, 0x1, 0x0},
{LoadCmdSegment, 0x38, "__LINKEDIT", 0x4000, 0x1000, 0x3000, 0x12c, 0x7, 0x1, 0x0, 0x0},
nil,
nil,
nil,
nil,
nil,
nil,
nil,
},
[]*SectionHeader{
{"__text", "__TEXT", 0x1f68, 0x88, 0xf68, 0x2, 0x0, 0x0, 0x80000400},
{"__cstring", "__TEXT", 0x1ff0, 0xd, 0xff0, 0x0, 0x0, 0x0, 0x2},
{"__data", "__DATA", 0x2000, 0x14, 0x1000, 0x2, 0x0, 0x0, 0x0},
{"__dyld", "__DATA", 0x2014, 0x1c, 0x1014, 0x2, 0x0, 0x0, 0x0},
{"__jump_table", "__IMPORT", 0x3000, 0xa, 0x2000, 0x6, 0x0, 0x0, 0x4000008},
},
},
{
"testdata/gcc-amd64-darwin-exec",
FileHeader{0xfeedfacf, CpuAmd64, 0x80000003, 0x2, 0xb, 0x568, 0x85},
[]*SegmentHeader{
{LoadCmdSegment64, 0x48, "__PAGEZERO", 0x0, 0x100000000, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0},
{LoadCmdSegment64, 0x1d8, "__TEXT", 0x100000000, 0x1000, 0x0, 0x1000, 0x7, 0x5, 0x5, 0x0},
{LoadCmdSegment64, 0x138, "__DATA", 0x100001000, 0x1000, 0x1000, 0x1000, 0x7, 0x3, 0x3, 0x0},
{LoadCmdSegment64, 0x48, "__LINKEDIT", 0x100002000, 0x1000, 0x2000, 0x140, 0x7, 0x1, 0x0, 0x0},
nil,
nil,
nil,
nil,
nil,
nil,
nil,
},
[]*SectionHeader{
{"__text", "__TEXT", 0x100000f14, 0x6d, 0xf14, 0x2, 0x0, 0x0, 0x80000400},
{"__symbol_stub1", "__TEXT", 0x100000f81, 0xc, 0xf81, 0x0, 0x0, 0x0, 0x80000408},
{"__stub_helper", "__TEXT", 0x100000f90, 0x18, 0xf90, 0x2, 0x0, 0x0, 0x0},
{"__cstring", "__TEXT", 0x100000fa8, 0xd, 0xfa8, 0x0, 0x0, 0x0, 0x2},
{"__eh_frame", "__TEXT", 0x100000fb8, 0x48, 0xfb8, 0x3, 0x0, 0x0, 0x6000000b},
{"__data", "__DATA", 0x100001000, 0x1c, 0x1000, 0x3, 0x0, 0x0, 0x0},
{"__dyld", "__DATA", 0x100001020, 0x38, 0x1020, 0x3, 0x0, 0x0, 0x0},
{"__la_symbol_ptr", "__DATA", 0x100001058, 0x10, 0x1058, 0x2, 0x0, 0x0, 0x7},
},
},
{
"testdata/gcc-amd64-darwin-exec-debug",
FileHeader{0xfeedfacf, CpuAmd64, 0x80000003, 0xa, 0x4, 0x5a0, 0},
[]*SegmentHeader{
nil,
{LoadCmdSegment64, 0x1d8, "__TEXT", 0x100000000, 0x1000, 0x0, 0x0, 0x7, 0x5, 0x5, 0x0},
{LoadCmdSegment64, 0x138, "__DATA", 0x100001000, 0x1000, 0x0, 0x0, 0x7, 0x3, 0x3, 0x0},
{LoadCmdSegment64, 0x278, "__DWARF", 0x100002000, 0x1000, 0x1000, 0x1bc, 0x7, 0x3, 0x7, 0x0},
},
[]*SectionHeader{
{"__text", "__TEXT", 0x100000f14, 0x0, 0x0, 0x2, 0x0, 0x0, 0x80000400},
{"__symbol_stub1", "__TEXT", 0x100000f81, 0x0, 0x0, 0x0, 0x0, 0x0, 0x80000408},
{"__stub_helper", "__TEXT", 0x100000f90, 0x0, 0x0, 0x2, 0x0, 0x0, 0x0},
{"__cstring", "__TEXT", 0x100000fa8, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2},
{"__eh_frame", "__TEXT", 0x100000fb8, 0x0, 0x0, 0x3, 0x0, 0x0, 0x6000000b},
{"__data", "__DATA", 0x100001000, 0x0, 0x0, 0x3, 0x0, 0x0, 0x0},
{"__dyld", "__DATA", 0x100001020, 0x0, 0x0, 0x3, 0x0, 0x0, 0x0},
{"__la_symbol_ptr", "__DATA", 0x100001058, 0x0, 0x0, 0x2, 0x0, 0x0, 0x7},
{"__debug_abbrev", "__DWARF", 0x100002000, 0x36, 0x1000, 0x0, 0x0, 0x0, 0x0},
{"__debug_aranges", "__DWARF", 0x100002036, 0x30, 0x1036, 0x0, 0x0, 0x0, 0x0},
{"__debug_frame", "__DWARF", 0x100002066, 0x40, 0x1066, 0x0, 0x0, 0x0, 0x0},
{"__debug_info", "__DWARF", 0x1000020a6, 0x54, 0x10a6, 0x0, 0x0, 0x0, 0x0},
{"__debug_line", "__DWARF", 0x1000020fa, 0x47, 0x10fa, 0x0, 0x0, 0x0, 0x0},
{"__debug_pubnames", "__DWARF", 0x100002141, 0x1b, 0x1141, 0x0, 0x0, 0x0, 0x0},
{"__debug_str", "__DWARF", 0x10000215c, 0x60, 0x115c, 0x0, 0x0, 0x0, 0x0},
},
},
}
func TestOpen(t *testing.T) {
for i := range fileTests {
tt := &fileTests[i]
f, err := Open(tt.file)
if err != nil {
t.Error(err)
continue
}
if !reflect.DeepEqual(f.FileHeader, tt.hdr) {
t.Errorf("open %s:\n\thave %#v\n\twant %#v\n", tt.file, f.FileHeader, tt.hdr)
continue
}
for i, l := range f.Loads {
if i >= len(tt.segments) {
break
}
sh := tt.segments[i]
s, ok := l.(*Segment)
if sh == nil {
if ok {
t.Errorf("open %s, section %d: skipping %#v\n", tt.file, i, &s.SegmentHeader)
}
continue
}
if !ok {
t.Errorf("open %s, section %d: not *Segment\n", tt.file, i)
continue
}
have := &s.SegmentHeader
want := sh
if !reflect.DeepEqual(have, want) {
t.Errorf("open %s, segment %d:\n\thave %#v\n\twant %#v\n", tt.file, i, have, want)
}
}
tn := len(tt.segments)
fn := len(f.Loads)
if tn != fn {
t.Errorf("open %s: len(Loads) = %d, want %d", tt.file, fn, tn)
}
for i, sh := range f.Sections {
if i >= len(tt.sections) {
break
}
have := &sh.SectionHeader
want := tt.sections[i]
if !reflect.DeepEqual(have, want) {
t.Errorf("open %s, section %d:\n\thave %#v\n\twant %#v\n", tt.file, i, have, want)
}
}
tn = len(tt.sections)
fn = len(f.Sections)
if tn != fn {
t.Errorf("open %s: len(Sections) = %d, want %d", tt.file, fn, tn)
}
}
}
func TestOpenFailure(t *testing.T) {
filename := "file.go" // not a Mach-O file
_, err := Open(filename) // don't crash
if err == nil {
t.Errorf("open %s: succeeded unexpectedly", filename)
}
}
func TestOpenFat(t *testing.T) {
ff, err := OpenFat("testdata/fat-gcc-386-amd64-darwin-exec")
if err != nil {
t.Fatal(err)
}
if ff.Magic != MagicFat {
t.Errorf("OpenFat: got magic number %#x, want %#x", ff.Magic, MagicFat)
}
if len(ff.Arches) != 2 {
t.Errorf("OpenFat: got %d architectures, want 2", len(ff.Arches))
}
for i := range ff.Arches {
arch := &ff.Arches[i]
ftArch := &fileTests[i]
if arch.Cpu != ftArch.hdr.Cpu || arch.SubCpu != ftArch.hdr.SubCpu {
t.Errorf("OpenFat: architecture #%d got cpu=%#x subtype=%#x, expected cpu=%#x, subtype=%#x", i, arch.Cpu, arch.SubCpu, ftArch.hdr.Cpu, ftArch.hdr.SubCpu)
}
if !reflect.DeepEqual(arch.FileHeader, ftArch.hdr) {
t.Errorf("OpenFat header:\n\tgot %#v\n\twant %#v\n", arch.FileHeader, ftArch.hdr)
}
}
}
func TestOpenFatFailure(t *testing.T) {
filename := "file.go" // not a Mach-O file
if _, err := OpenFat(filename); err == nil {
t.Errorf("OpenFat %s: succeeded unexpectedly", filename)
}
filename = "testdata/gcc-386-darwin-exec" // not a fat Mach-O
ff, err := OpenFat(filename)
if err != ErrNotFat {
t.Errorf("OpenFat %s: got %v, want ErrNotFat", filename, err)
}
if ff != nil {
t.Errorf("OpenFat %s: got %v, want nil", filename, ff)
}
}