| 1 | // Copyright 2009 The Go Authors. All rights reserved. |
|---|---|
| 2 | // Use of this source code is governed by a BSD-style |
| 3 | // license that can be found in the LICENSE file. |
| 4 | |
| 5 | package macho |
| 6 | |
| 7 | import ( |
| 8 | "reflect" |
| 9 | "strings" |
| 10 | "testing" |
| 11 | ) |
| 12 | |
| 13 | type fileTest struct { |
| 14 | file string |
| 15 | hdr FileHeader |
| 16 | loads []interface{} |
| 17 | sections []*SectionHeader |
| 18 | relocations map[string][]Reloc |
| 19 | } |
| 20 | |
| 21 | var fileTests = []fileTest{ |
| 22 | { |
| 23 | "testdata/gcc-386-darwin-exec", |
| 24 | FileHeader{0xfeedface, Cpu386, 0x3, 0x2, 0xc, 0x3c0, 0x85}, |
| 25 | []interface{}{ |
| 26 | &SegmentHeader{LcSegment, 0x38, "__PAGEZERO", 0x0, 0x1000, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0}, |
| 27 | &SegmentHeader{LcSegment, 0xc0, "__TEXT", 0x1000, 0x1000, 0x0, 0x1000, 0x7, 0x5, 0x2, 0x0, 0}, |
| 28 | &SegmentHeader{LcSegment, 0xc0, "__DATA", 0x2000, 0x1000, 0x1000, 0x1000, 0x7, 0x3, 0x2, 0x0, 2}, |
| 29 | &SegmentHeader{LcSegment, 0x7c, "__IMPORT", 0x3000, 0x1000, 0x2000, 0x1000, 0x7, 0x7, 0x1, 0x0, 4}, |
| 30 | &SegmentHeader{LcSegment, 0x38, "__LINKEDIT", 0x4000, 0x1000, 0x3000, 0x12c, 0x7, 0x1, 0x0, 0x0, 5}, |
| 31 | nil, // LC_SYMTAB |
| 32 | nil, // LC_DYSYMTAB |
| 33 | nil, // LC_LOAD_DYLINKER |
| 34 | nil, // LC_UUID |
| 35 | nil, // LC_UNIXTHREAD |
| 36 | &Dylib{DylibCmd{}, "/usr/lib/libgcc_s.1.dylib", 0x2, 0x10000, 0x10000}, |
| 37 | &Dylib{DylibCmd{}, "/usr/lib/libSystem.B.dylib", 0x2, 0x6f0104, 0x10000}, |
| 38 | }, |
| 39 | []*SectionHeader{ |
| 40 | {"__text", "__TEXT", 0x1f68, 0x88, 0xf68, 0x2, 0x0, 0x0, 0x80000400, 0, 0, 0}, |
| 41 | {"__cstring", "__TEXT", 0x1ff0, 0xd, 0xff0, 0x0, 0x0, 0x0, 0x2, 0, 0, 0}, |
| 42 | {"__data", "__DATA", 0x2000, 0x14, 0x1000, 0x2, 0x0, 0x0, 0x0, 0, 0, 0}, |
| 43 | {"__dyld", "__DATA", 0x2014, 0x1c, 0x1014, 0x2, 0x0, 0x0, 0x0, 0, 0, 0}, |
| 44 | {"__jump_table", "__IMPORT", 0x3000, 0xa, 0x2000, 0x6, 0x0, 0x0, 0x4000008, 0, 5, 0}, |
| 45 | }, |
| 46 | nil, |
| 47 | }, |
| 48 | { |
| 49 | "testdata/gcc-amd64-darwin-exec", |
| 50 | FileHeader{0xfeedfacf, CpuAmd64, 0x80000003, 0x2, 0xb, 0x568, 0x85}, |
| 51 | []interface{}{ |
| 52 | &SegmentHeader{LcSegment64, 0x48, "__PAGEZERO", 0x0, 0x100000000, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0}, |
| 53 | &SegmentHeader{LcSegment64, 0x1d8, "__TEXT", 0x100000000, 0x1000, 0x0, 0x1000, 0x7, 0x5, 0x5, 0x0, 0}, |
| 54 | &SegmentHeader{LcSegment64, 0x138, "__DATA", 0x100001000, 0x1000, 0x1000, 0x1000, 0x7, 0x3, 0x3, 0x0, 5}, |
| 55 | &SegmentHeader{LcSegment64, 0x48, "__LINKEDIT", 0x100002000, 0x1000, 0x2000, 0x140, 0x7, 0x1, 0x0, 0x0, 8}, |
| 56 | nil, // LC_SYMTAB |
| 57 | nil, // LC_DYSYMTAB |
| 58 | nil, // LC_LOAD_DYLINKER |
| 59 | nil, // LC_UUID |
| 60 | nil, // LC_UNIXTHREAD |
| 61 | &Dylib{DylibCmd{}, "/usr/lib/libgcc_s.1.dylib", 0x2, 0x10000, 0x10000}, |
| 62 | &Dylib{DylibCmd{}, "/usr/lib/libSystem.B.dylib", 0x2, 0x6f0104, 0x10000}, |
| 63 | }, |
| 64 | []*SectionHeader{ |
| 65 | {"__text", "__TEXT", 0x100000f14, 0x6d, 0xf14, 0x2, 0x0, 0x0, 0x80000400, 0, 0, 0}, |
| 66 | {"__symbol_stub1", "__TEXT", 0x100000f81, 0xc, 0xf81, 0x0, 0x0, 0x0, 0x80000408, 0, 6, 0}, |
| 67 | {"__stub_helper", "__TEXT", 0x100000f90, 0x18, 0xf90, 0x2, 0x0, 0x0, 0x0, 0, 0, 0}, |
| 68 | {"__cstring", "__TEXT", 0x100000fa8, 0xd, 0xfa8, 0x0, 0x0, 0x0, 0x2, 0, 0, 0}, |
| 69 | {"__eh_frame", "__TEXT", 0x100000fb8, 0x48, 0xfb8, 0x3, 0x0, 0x0, 0x6000000b, 0, 0, 0}, |
| 70 | {"__data", "__DATA", 0x100001000, 0x1c, 0x1000, 0x3, 0x0, 0x0, 0x0, 0, 0, 0}, |
| 71 | {"__dyld", "__DATA", 0x100001020, 0x38, 0x1020, 0x3, 0x0, 0x0, 0x0, 0, 0, 0}, |
| 72 | {"__la_symbol_ptr", "__DATA", 0x100001058, 0x10, 0x1058, 0x2, 0x0, 0x0, 0x7, 2, 0, 0}, |
| 73 | }, |
| 74 | nil, |
| 75 | }, |
| 76 | { |
| 77 | "testdata/gcc-amd64-darwin-exec-debug", |
| 78 | FileHeader{0xfeedfacf, CpuAmd64, 0x80000003, 0xa, 0x4, 0x5a0, 0}, |
| 79 | []interface{}{ |
| 80 | nil, // LC_UUID |
| 81 | &SegmentHeader{LcSegment64, 0x1d8, "__TEXT", 0x100000000, 0x1000, 0x0, 0x0, 0x7, 0x5, 0x5, 0x0, 0}, |
| 82 | &SegmentHeader{LcSegment64, 0x138, "__DATA", 0x100001000, 0x1000, 0x0, 0x0, 0x7, 0x3, 0x3, 0x0, 5}, |
| 83 | &SegmentHeader{LcSegment64, 0x278, "__DWARF", 0x100002000, 0x1000, 0x1000, 0x1bc, 0x7, 0x3, 0x7, 0x0, 8}, |
| 84 | }, |
| 85 | []*SectionHeader{ |
| 86 | {"__text", "__TEXT", 0x100000f14, 0x0, 0x0, 0x2, 0x0, 0x0, 0x80000400, 0, 0, 0}, |
| 87 | {"__symbol_stub1", "__TEXT", 0x100000f81, 0x0, 0x0, 0x0, 0x0, 0x0, 0x80000408, 0, 6, 0}, |
| 88 | {"__stub_helper", "__TEXT", 0x100000f90, 0x0, 0x0, 0x2, 0x0, 0x0, 0x0, 0, 0, 0}, |
| 89 | {"__cstring", "__TEXT", 0x100000fa8, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0, 0, 0}, |
| 90 | {"__eh_frame", "__TEXT", 0x100000fb8, 0x0, 0x0, 0x3, 0x0, 0x0, 0x6000000b, 0, 0, 0}, |
| 91 | {"__data", "__DATA", 0x100001000, 0x0, 0x0, 0x3, 0x0, 0x0, 0x0, 0, 0, 0}, |
| 92 | {"__dyld", "__DATA", 0x100001020, 0x0, 0x0, 0x3, 0x0, 0x0, 0x0, 0, 0, 0}, |
| 93 | {"__la_symbol_ptr", "__DATA", 0x100001058, 0x0, 0x0, 0x2, 0x0, 0x0, 0x7, 2, 0, 0}, |
| 94 | {"__debug_abbrev", "__DWARF", 0x100002000, 0x36, 0x1000, 0x0, 0x0, 0x0, 0x0, 0, 0, 0}, |
| 95 | {"__debug_aranges", "__DWARF", 0x100002036, 0x30, 0x1036, 0x0, 0x0, 0x0, 0x0, 0, 0, 0}, |
| 96 | {"__debug_frame", "__DWARF", 0x100002066, 0x40, 0x1066, 0x0, 0x0, 0x0, 0x0, 0, 0, 0}, |
| 97 | {"__debug_info", "__DWARF", 0x1000020a6, 0x54, 0x10a6, 0x0, 0x0, 0x0, 0x0, 0, 0, 0}, |
| 98 | {"__debug_line", "__DWARF", 0x1000020fa, 0x47, 0x10fa, 0x0, 0x0, 0x0, 0x0, 0, 0, 0}, |
| 99 | {"__debug_pubnames", "__DWARF", 0x100002141, 0x1b, 0x1141, 0x0, 0x0, 0x0, 0x0, 0, 0, 0}, |
| 100 | {"__debug_str", "__DWARF", 0x10000215c, 0x60, 0x115c, 0x0, 0x0, 0x0, 0x0, 0, 0, 0}, |
| 101 | }, |
| 102 | nil, |
| 103 | }, |
| 104 | { |
| 105 | "testdata/clang-386-darwin-exec-with-rpath", |
| 106 | FileHeader{0xfeedface, Cpu386, 0x3, 0x2, 0x10, 0x42c, 0x1200085}, |
| 107 | []interface{}{ |
| 108 | nil, // LC_SEGMENT |
| 109 | nil, // LC_SEGMENT |
| 110 | nil, // LC_SEGMENT |
| 111 | nil, // LC_SEGMENT |
| 112 | nil, // LC_DYLD_INFO_ONLY |
| 113 | nil, // LC_SYMTAB |
| 114 | nil, // LC_DYSYMTAB |
| 115 | nil, // LC_LOAD_DYLINKER |
| 116 | nil, // LC_UUID |
| 117 | nil, // LC_VERSION_MIN_MACOSX |
| 118 | nil, // LC_SOURCE_VERSION |
| 119 | nil, // LC_MAIN |
| 120 | nil, // LC_LOAD_DYLIB |
| 121 | &Rpath{LcRpath, "/my/rpath"}, |
| 122 | nil, // LC_FUNCTION_STARTS |
| 123 | nil, // LC_DATA_IN_CODE |
| 124 | }, |
| 125 | nil, |
| 126 | nil, |
| 127 | }, |
| 128 | { |
| 129 | "testdata/clang-amd64-darwin-exec-with-rpath", |
| 130 | FileHeader{0xfeedfacf, CpuAmd64, 0x80000003, 0x2, 0x10, 0x4c8, 0x200085}, |
| 131 | []interface{}{ |
| 132 | nil, // LC_SEGMENT |
| 133 | nil, // LC_SEGMENT |
| 134 | nil, // LC_SEGMENT |
| 135 | nil, // LC_SEGMENT |
| 136 | nil, // LC_DYLD_INFO_ONLY |
| 137 | nil, // LC_SYMTAB |
| 138 | nil, // LC_DYSYMTAB |
| 139 | nil, // LC_LOAD_DYLINKER |
| 140 | nil, // LC_UUID |
| 141 | nil, // LC_VERSION_MIN_MACOSX |
| 142 | nil, // LC_SOURCE_VERSION |
| 143 | nil, // LC_MAIN |
| 144 | nil, // LC_LOAD_DYLIB |
| 145 | &Rpath{LcRpath, "/my/rpath"}, |
| 146 | nil, // LC_FUNCTION_STARTS |
| 147 | nil, // LC_DATA_IN_CODE |
| 148 | }, |
| 149 | nil, |
| 150 | nil, |
| 151 | }, |
| 152 | { |
| 153 | "testdata/clang-386-darwin.obj", |
| 154 | FileHeader{0xfeedface, Cpu386, 0x3, 0x1, 0x4, 0x138, 0x2000}, |
| 155 | nil, |
| 156 | nil, |
| 157 | map[string][]Reloc{ |
| 158 | "__text": []Reloc{ |
| 159 | { |
| 160 | Addr: 0x1d, |
| 161 | Type: uint8(GENERIC_RELOC_VANILLA), |
| 162 | Len: 2, |
| 163 | Pcrel: true, |
| 164 | Extern: true, |
| 165 | Value: 1, |
| 166 | Scattered: false, |
| 167 | }, |
| 168 | { |
| 169 | Addr: 0xe, |
| 170 | Type: uint8(GENERIC_RELOC_LOCAL_SECTDIFF), |
| 171 | Len: 2, |
| 172 | Pcrel: false, |
| 173 | Value: 0x2d, |
| 174 | Scattered: true, |
| 175 | }, |
| 176 | { |
| 177 | Addr: 0x0, |
| 178 | Type: uint8(GENERIC_RELOC_PAIR), |
| 179 | Len: 2, |
| 180 | Pcrel: false, |
| 181 | Value: 0xb, |
| 182 | Scattered: true, |
| 183 | }, |
| 184 | }, |
| 185 | }, |
| 186 | }, |
| 187 | { |
| 188 | "testdata/clang-amd64-darwin.obj", |
| 189 | FileHeader{0xfeedfacf, CpuAmd64, 0x3, 0x1, 0x4, 0x200, 0x2000}, |
| 190 | nil, |
| 191 | nil, |
| 192 | map[string][]Reloc{ |
| 193 | "__text": []Reloc{ |
| 194 | { |
| 195 | Addr: 0x19, |
| 196 | Type: uint8(X86_64_RELOC_BRANCH), |
| 197 | Len: 2, |
| 198 | Pcrel: true, |
| 199 | Extern: true, |
| 200 | Value: 1, |
| 201 | }, |
| 202 | { |
| 203 | Addr: 0xb, |
| 204 | Type: uint8(X86_64_RELOC_SIGNED), |
| 205 | Len: 2, |
| 206 | Pcrel: true, |
| 207 | Extern: false, |
| 208 | Value: 2, |
| 209 | }, |
| 210 | }, |
| 211 | "__compact_unwind": []Reloc{ |
| 212 | { |
| 213 | Addr: 0x0, |
| 214 | Type: uint8(X86_64_RELOC_UNSIGNED), |
| 215 | Len: 3, |
| 216 | Pcrel: false, |
| 217 | Extern: false, |
| 218 | Value: 1, |
| 219 | }, |
| 220 | }, |
| 221 | }, |
| 222 | }, |
| 223 | } |
| 224 | |
| 225 | func TestOpen(t *testing.T) { |
| 226 | for i := range fileTests { |
| 227 | tt := &fileTests[i] |
| 228 | |
| 229 | f, err := Open(tt.file) |
| 230 | if err != nil { |
| 231 | t.Error(err) |
| 232 | continue |
| 233 | } |
| 234 | if !reflect.DeepEqual(f.FileHeader, tt.hdr) { |
| 235 | t.Errorf("open %s:\n\thave %#v\n\twant %#v\n", tt.file, f.FileHeader, tt.hdr) |
| 236 | continue |
| 237 | } |
| 238 | // for i, l := range f.Loads { |
| 239 | // if len(l.Raw()) < 8 { |
| 240 | // t.Errorf("open %s, command %d:\n\tload command %T don't have enough data\n", tt.file, i, l) |
| 241 | // } |
| 242 | // } |
| 243 | if tt.loads != nil { |
| 244 | for i, l := range f.Loads { |
| 245 | if i >= len(tt.loads) { |
| 246 | break |
| 247 | } |
| 248 | |
| 249 | want := tt.loads[i] |
| 250 | if want == nil { |
| 251 | continue |
| 252 | } |
| 253 | |
| 254 | switch l := l.(type) { |
| 255 | case *Segment: |
| 256 | have := &l.SegmentHeader |
| 257 | if !reflect.DeepEqual(have, want) { |
| 258 | t.Errorf("open %s, command %d:\n\thave %s\n\twant %s\n", tt.file, i, have.String(), want.(*SegmentHeader).String()) |
| 259 | } |
| 260 | case *Dylib: |
| 261 | // have := l |
| 262 | // have.LoadBytes = nil |
| 263 | // if !reflect.DeepEqual(have, want) { |
| 264 | // t.Errorf("open %s, command %d:\n\thave %#v\n\twant %#v\n", tt.file, i, have, want) |
| 265 | // } |
| 266 | case *Rpath: |
| 267 | // have := l |
| 268 | // have.LoadBytes = nil |
| 269 | // if !reflect.DeepEqual(have, want) { |
| 270 | // t.Errorf("open %s, command %d:\n\thave %#v\n\twant %#v\n", tt.file, i, have, want) |
| 271 | // } |
| 272 | default: |
| 273 | t.Errorf("open %s, command %d: unknown load command\n\thave %#v\n\twant %#v\n", tt.file, i, l, want) |
| 274 | } |
| 275 | } |
| 276 | tn := len(tt.loads) |
| 277 | fn := len(f.Loads) |
| 278 | if tn != fn { |
| 279 | t.Errorf("open %s: len(Loads) = %d, want %d", tt.file, fn, tn) |
| 280 | } |
| 281 | } |
| 282 | |
| 283 | if tt.sections != nil { |
| 284 | for i, sh := range f.Sections { |
| 285 | if i >= len(tt.sections) { |
| 286 | break |
| 287 | } |
| 288 | have := &sh.SectionHeader |
| 289 | want := tt.sections[i] |
| 290 | if !reflect.DeepEqual(have, want) { |
| 291 | t.Errorf("open %s, section %d:\n\thave %#v\n\twant %#v\n", tt.file, i, have, want) |
| 292 | } |
| 293 | } |
| 294 | tn := len(tt.sections) |
| 295 | fn := len(f.Sections) |
| 296 | if tn != fn { |
| 297 | t.Errorf("open %s: len(Sections) = %d, want %d", tt.file, fn, tn) |
| 298 | } |
| 299 | } |
| 300 | |
| 301 | if tt.relocations != nil { |
| 302 | for i, sh := range f.Sections { |
| 303 | have := sh.Relocs |
| 304 | want := tt.relocations[sh.Name] |
| 305 | if !reflect.DeepEqual(have, want) { |
| 306 | t.Errorf("open %s, relocations in section %d (%s):\n\thave %#v\n\twant %#v\n", tt.file, i, sh.Name, have, want) |
| 307 | } |
| 308 | } |
| 309 | } |
| 310 | } |
| 311 | } |
| 312 | |
| 313 | func TestOpenFailure(t *testing.T) { |
| 314 | filename := "file.go" // not a Mach-O file |
| 315 | _, err := Open(filename) // don't crash |
| 316 | if err == nil { |
| 317 | t.Errorf("open %s: succeeded unexpectedly", filename) |
| 318 | } |
| 319 | } |
| 320 | |
| 321 | func TestOpenFat(t *testing.T) { |
| 322 | ff, err := OpenFat("testdata/fat-gcc-386-amd64-darwin-exec") |
| 323 | if err != nil { |
| 324 | t.Fatal(err) |
| 325 | } |
| 326 | |
| 327 | if ff.Magic != MagicFat { |
| 328 | t.Errorf("OpenFat: got magic number %#x, want %#x", ff.Magic, MagicFat) |
| 329 | } |
| 330 | if len(ff.Arches) != 2 { |
| 331 | t.Errorf("OpenFat: got %d architectures, want 2", len(ff.Arches)) |
| 332 | } |
| 333 | |
| 334 | for i := range ff.Arches { |
| 335 | arch := &ff.Arches[i] |
| 336 | ftArch := &fileTests[i] |
| 337 | |
| 338 | if arch.Cpu != ftArch.hdr.Cpu || arch.SubCpu != ftArch.hdr.SubCpu { |
| 339 | 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) |
| 340 | } |
| 341 | |
| 342 | if !reflect.DeepEqual(arch.FileHeader, ftArch.hdr) { |
| 343 | t.Errorf("OpenFat header:\n\tgot %#v\n\twant %#v\n", arch.FileHeader, ftArch.hdr) |
| 344 | } |
| 345 | } |
| 346 | } |
| 347 | |
| 348 | func TestOpenFatFailure(t *testing.T) { |
| 349 | filename := "file.go" // not a Mach-O file |
| 350 | if _, err := OpenFat(filename); err == nil { |
| 351 | t.Errorf("OpenFat %s: succeeded unexpectedly", filename) |
| 352 | } |
| 353 | |
| 354 | filename = "testdata/gcc-386-darwin-exec" // not a fat Mach-O |
| 355 | ff, err := OpenFat(filename) |
| 356 | if err == nil { |
| 357 | t.Errorf("OpenFat %s: expected error, got nil", filename) |
| 358 | } |
| 359 | if _, ok := err.(*FormatError); !ok { |
| 360 | t.Errorf("OpenFat %s: expected FormatError, got %v", filename, err) |
| 361 | } |
| 362 | |
| 363 | ferr := err.(*FormatError) |
| 364 | if !strings.Contains(ferr.String(), "not a fat") { |
| 365 | t.Errorf("OpenFat %s: expected error containing 'not a fat', got %s", filename, ferr.String()) |
| 366 | } |
| 367 | |
| 368 | if ff != nil { |
| 369 | t.Errorf("OpenFat %s: got %v, want nil", filename, ff) |
| 370 | } |
| 371 | } |
| 372 | |
| 373 | func TestRelocTypeString(t *testing.T) { |
| 374 | if X86_64_RELOC_BRANCH.String() != "X86_64_RELOC_BRANCH" { |
| 375 | t.Errorf("got %v, want %v", X86_64_RELOC_BRANCH.String(), "X86_64_RELOC_BRANCH") |
| 376 | } |
| 377 | if X86_64_RELOC_BRANCH.GoString() != "macho.X86_64_RELOC_BRANCH" { |
| 378 | t.Errorf("got %v, want %v", X86_64_RELOC_BRANCH.GoString(), "macho.X86_64_RELOC_BRANCH") |
| 379 | } |
| 380 | } |
| 381 | |
| 382 | func TestTypeString(t *testing.T) { |
| 383 | if MhExecute.String() != "Exec" { |
| 384 | t.Errorf("got %v, want %v", MhExecute.String(), "Exec") |
| 385 | } |
| 386 | if MhExecute.GoString() != "macho.Exec" { |
| 387 | t.Errorf("got %v, want %v", MhExecute.GoString(), "macho.Exec") |
| 388 | } |
| 389 | } |
| 390 |
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