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Source file src/debug/macho/file_test.go

Documentation: debug/macho

  // 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)
  	}
  }
  

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