symbols_test.go

     1  // Copyright 2014 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 elf
     6  
     7  import (
     8  	"io"
     9  	"path"
    10  	"reflect"
    11  	"testing"
    12  )
    13  
    14  // TODO: remove duplicate code
    15  func TestSymbols(t *testing.T) {
    16  	do := func(file string, ts []Symbol, getfunc func(*File) ([]Symbol, error)) {
    17  		var f *File
    18  		var err error
    19  		if path.Ext(file) == ".gz" {
    20  			var r io.ReaderAt
    21  			if r, err = decompress(file); err == nil {
    22  				f, err = NewFile(r)
    23  			}
    24  		} else {
    25  			f, err = Open(file)
    26  		}
    27  		if err != nil {
    28  			t.Errorf("TestSymbols: cannot open file %s: %v", file, err)
    29  			return
    30  		}
    31  		defer f.Close()
    32  		fs, err := getfunc(f)
    33  		if err != nil && err != ErrNoSymbols {
    34  			t.Error(err)
    35  			return
    36  		} else if err == ErrNoSymbols {
    37  			fs = []Symbol{}
    38  		}
    39  		if !reflect.DeepEqual(ts, fs) {
    40  			t.Errorf("%s: Symbols = %v, want %v", file, ts, fs)
    41  		}
    42  	}
    43  	for file, ts := range symbolsGolden {
    44  		do(file, ts, (*File).Symbols)
    45  	}
    46  	for file, ts := range dynamicSymbolsGolden {
    47  		do(file, ts, (*File).DynamicSymbols)
    48  	}
    49  }
    50  
    51  // golden symbol table data generated by testdata/getgoldsym.c
    52  
    53  var symbolsGolden = map[string][]Symbol{
    54  	"testdata/gcc-amd64-linux-exec": {
    55  		Symbol{
    56  			Name:         "",
    57  			Info:         0x3,
    58  			Other:        0x0,
    59  			VersionIndex: -1,
    60  			VersionFlags: VerFlagNone,
    61  			Section:      0x1,
    62  			Value:        0x400200,
    63  			Size:         0x0,
    64  		},
    65  		Symbol{
    66  			Name:         "",
    67  			Info:         0x3,
    68  			Other:        0x0,
    69  			VersionIndex: -1,
    70  			VersionFlags: VerFlagNone,
    71  			Section:      0x2,
    72  			Value:        0x40021C,
    73  			Size:         0x0,
    74  		},
    75  		Symbol{
    76  			Name:         "",
    77  			Info:         0x3,
    78  			Other:        0x0,
    79  			VersionIndex: -1,
    80  			VersionFlags: VerFlagNone,
    81  			Section:      0x3,
    82  			Value:        0x400240,
    83  			Size:         0x0,
    84  		},
    85  		Symbol{
    86  			Name:         "",
    87  			Info:         0x3,
    88  			Other:        0x0,
    89  			VersionIndex: -1,
    90  			VersionFlags: VerFlagNone,
    91  			Section:      0x4,
    92  			Value:        0x400268,
    93  			Size:         0x0,
    94  		},
    95  		Symbol{
    96  			Name:         "",
    97  			Info:         0x3,
    98  			Other:        0x0,
    99  			VersionIndex: -1,
   100  			VersionFlags: VerFlagNone,
   101  			Section:      0x5,
   102  			Value:        0x400288,
   103  			Size:         0x0,
   104  		},
   105  		Symbol{
   106  			Name:         "",
   107  			Info:         0x3,
   108  			Other:        0x0,
   109  			VersionIndex: -1,
   110  			VersionFlags: VerFlagNone,
   111  			Section:      0x6,
   112  			Value:        0x4002E8,
   113  			Size:         0x0,
   114  		},
   115  		Symbol{
   116  			Name:         "",
   117  			Info:         0x3,
   118  			Other:        0x0,
   119  			VersionIndex: -1,
   120  			VersionFlags: VerFlagNone,
   121  			Section:      0x7,
   122  			Value:        0x400326,
   123  			Size:         0x0,
   124  		},
   125  		Symbol{
   126  			Name:         "",
   127  			Info:         0x3,
   128  			Other:        0x0,
   129  			VersionIndex: -1,
   130  			VersionFlags: VerFlagNone,
   131  			Section:      0x8,
   132  			Value:        0x400330,
   133  			Size:         0x0,
   134  		},
   135  		Symbol{
   136  			Name:         "",
   137  			Info:         0x3,
   138  			Other:        0x0,
   139  			VersionIndex: -1,
   140  			VersionFlags: VerFlagNone,
   141  			Section:      0x9,
   142  			Value:        0x400350,
   143  			Size:         0x0,
   144  		},
   145  		Symbol{
   146  			Name:         "",
   147  			Info:         0x3,
   148  			Other:        0x0,
   149  			VersionIndex: -1,
   150  			VersionFlags: VerFlagNone,
   151  			Section:      0xA,
   152  			Value:        0x400368,
   153  			Size:         0x0,
   154  		},
   155  		Symbol{
   156  			Name:         "",
   157  			Info:         0x3,
   158  			Other:        0x0,
   159  			VersionIndex: -1,
   160  			VersionFlags: VerFlagNone,
   161  			Section:      0xB,
   162  			Value:        0x400398,
   163  			Size:         0x0,
   164  		},
   165  		Symbol{
   166  			Name:         "",
   167  			Info:         0x3,
   168  			Other:        0x0,
   169  			VersionIndex: -1,
   170  			VersionFlags: VerFlagNone,
   171  			Section:      0xC,
   172  			Value:        0x4003B0,
   173  			Size:         0x0,
   174  		},
   175  		Symbol{
   176  			Name:         "",
   177  			Info:         0x3,
   178  			Other:        0x0,
   179  			VersionIndex: -1,
   180  			VersionFlags: VerFlagNone,
   181  			Section:      0xD,
   182  			Value:        0x4003E0,
   183  			Size:         0x0,
   184  		},
   185  		Symbol{
   186  			Name:         "",
   187  			Info:         0x3,
   188  			Other:        0x0,
   189  			VersionIndex: -1,
   190  			VersionFlags: VerFlagNone,
   191  			Section:      0xE,
   192  			Value:        0x400594,
   193  			Size:         0x0,
   194  		},
   195  		Symbol{
   196  			Name:         "",
   197  			Info:         0x3,
   198  			Other:        0x0,
   199  			VersionIndex: -1,
   200  			VersionFlags: VerFlagNone,
   201  			Section:      0xF,
   202  			Value:        0x4005A4,
   203  			Size:         0x0,
   204  		},
   205  		Symbol{
   206  			Name:         "",
   207  			Info:         0x3,
   208  			Other:        0x0,
   209  			VersionIndex: -1,
   210  			VersionFlags: VerFlagNone,
   211  			Section:      0x10,
   212  			Value:        0x4005B8,
   213  			Size:         0x0,
   214  		},
   215  		Symbol{
   216  			Name:         "",
   217  			Info:         0x3,
   218  			Other:        0x0,
   219  			VersionIndex: -1,
   220  			VersionFlags: VerFlagNone,
   221  			Section:      0x11,
   222  			Value:        0x4005E0,
   223  			Size:         0x0,
   224  		},
   225  		Symbol{
   226  			Name:         "",
   227  			Info:         0x3,
   228  			Other:        0x0,
   229  			VersionIndex: -1,
   230  			VersionFlags: VerFlagNone,
   231  			Section:      0x12,
   232  			Value:        0x600688,
   233  			Size:         0x0,
   234  		},
   235  		Symbol{
   236  			Name:         "",
   237  			Info:         0x3,
   238  			Other:        0x0,
   239  			VersionIndex: -1,
   240  			VersionFlags: VerFlagNone,
   241  			Section:      0x13,
   242  			Value:        0x600698,
   243  			Size:         0x0,
   244  		},
   245  		Symbol{
   246  			Name:         "",
   247  			Info:         0x3,
   248  			Other:        0x0,
   249  			VersionIndex: -1,
   250  			VersionFlags: VerFlagNone,
   251  			Section:      0x14,
   252  			Value:        0x6006A8,
   253  			Size:         0x0,
   254  		},
   255  		Symbol{
   256  			Name:         "",
   257  			Info:         0x3,
   258  			Other:        0x0,
   259  			VersionIndex: -1,
   260  			VersionFlags: VerFlagNone,
   261  			Section:      0x15,
   262  			Value:        0x6006B0,
   263  			Size:         0x0,
   264  		},
   265  		Symbol{
   266  			Name:         "",
   267  			Info:         0x3,
   268  			Other:        0x0,
   269  			VersionIndex: -1,
   270  			VersionFlags: VerFlagNone,
   271  			Section:      0x16,
   272  			Value:        0x600850,
   273  			Size:         0x0,
   274  		},
   275  		Symbol{
   276  			Name:         "",
   277  			Info:         0x3,
   278  			Other:        0x0,
   279  			VersionIndex: -1,
   280  			VersionFlags: VerFlagNone,
   281  			Section:      0x17,
   282  			Value:        0x600858,
   283  			Size:         0x0,
   284  		},
   285  		Symbol{
   286  			Name:         "",
   287  			Info:         0x3,
   288  			Other:        0x0,
   289  			VersionIndex: -1,
   290  			VersionFlags: VerFlagNone,
   291  			Section:      0x18,
   292  			Value:        0x600880,
   293  			Size:         0x0,
   294  		},
   295  		Symbol{
   296  			Name:         "",
   297  			Info:         0x3,
   298  			Other:        0x0,
   299  			VersionIndex: -1,
   300  			VersionFlags: VerFlagNone,
   301  			Section:      0x19,
   302  			Value:        0x600898,
   303  			Size:         0x0,
   304  		},
   305  		Symbol{
   306  			Name:         "",
   307  			Info:         0x3,
   308  			Other:        0x0,
   309  			VersionIndex: -1,
   310  			VersionFlags: VerFlagNone,
   311  			Section:      0x1A,
   312  			Value:        0x0,
   313  			Size:         0x0,
   314  		},
   315  		Symbol{
   316  			Name:         "",
   317  			Info:         0x3,
   318  			Other:        0x0,
   319  			VersionIndex: -1,
   320  			VersionFlags: VerFlagNone,
   321  			Section:      0x1B,
   322  			Value:        0x0,
   323  			Size:         0x0,
   324  		},
   325  		Symbol{
   326  			Name:         "",
   327  			Info:         0x3,
   328  			Other:        0x0,
   329  			VersionIndex: -1,
   330  			VersionFlags: VerFlagNone,
   331  			Section:      0x1C,
   332  			Value:        0x0,
   333  			Size:         0x0,
   334  		},
   335  		Symbol{
   336  			Name:         "",
   337  			Info:         0x3,
   338  			Other:        0x0,
   339  			VersionIndex: -1,
   340  			VersionFlags: VerFlagNone,
   341  			Section:      0x1D,
   342  			Value:        0x0,
   343  			Size:         0x0,
   344  		},
   345  		Symbol{
   346  			Name:         "",
   347  			Info:         0x3,
   348  			Other:        0x0,
   349  			VersionIndex: -1,
   350  			VersionFlags: VerFlagNone,
   351  			Section:      0x1E,
   352  			Value:        0x0,
   353  			Size:         0x0,
   354  		},
   355  		Symbol{
   356  			Name:         "",
   357  			Info:         0x3,
   358  			Other:        0x0,
   359  			VersionIndex: -1,
   360  			VersionFlags: VerFlagNone,
   361  			Section:      0x1F,
   362  			Value:        0x0,
   363  			Size:         0x0,
   364  		},
   365  		Symbol{
   366  			Name:         "",
   367  			Info:         0x3,
   368  			Other:        0x0,
   369  			VersionIndex: -1,
   370  			VersionFlags: VerFlagNone,
   371  			Section:      0x20,
   372  			Value:        0x0,
   373  			Size:         0x0,
   374  		},
   375  		Symbol{
   376  			Name:         "",
   377  			Info:         0x3,
   378  			Other:        0x0,
   379  			VersionIndex: -1,
   380  			VersionFlags: VerFlagNone,
   381  			Section:      0x21,
   382  			Value:        0x0,
   383  			Size:         0x0,
   384  		},
   385  		Symbol{
   386  			Name:         "init.c",
   387  			Info:         0x4,
   388  			Other:        0x0,
   389  			VersionIndex: -1,
   390  			VersionFlags: VerFlagNone,
   391  			Section:      0xFFF1,
   392  			Value:        0x0,
   393  			Size:         0x0,
   394  		},
   395  		Symbol{
   396  			Name:         "initfini.c",
   397  			Info:         0x4,
   398  			Other:        0x0,
   399  			VersionIndex: -1,
   400  			VersionFlags: VerFlagNone,
   401  			Section:      0xFFF1,
   402  			Value:        0x0,
   403  			Size:         0x0,
   404  		},
   405  		Symbol{
   406  			Name:         "call_gmon_start",
   407  			Info:         0x2,
   408  			Other:        0x0,
   409  			VersionIndex: -1,
   410  			VersionFlags: VerFlagNone,
   411  			Section:      0xD,
   412  			Value:        0x40040C,
   413  			Size:         0x0,
   414  		},
   415  		Symbol{
   416  			Name:         "crtstuff.c",
   417  			Info:         0x4,
   418  			Other:        0x0,
   419  			VersionIndex: -1,
   420  			VersionFlags: VerFlagNone,
   421  			Section:      0xFFF1,
   422  			Value:        0x0,
   423  			Size:         0x0,
   424  		},
   425  		Symbol{
   426  			Name:         "__CTOR_LIST__",
   427  			Info:         0x1,
   428  			Other:        0x0,
   429  			VersionIndex: -1,
   430  			VersionFlags: VerFlagNone,
   431  			Section:      0x12,
   432  			Value:        0x600688,
   433  			Size:         0x0,
   434  		},
   435  		Symbol{
   436  			Name:         "__DTOR_LIST__",
   437  			Info:         0x1,
   438  			Other:        0x0,
   439  			VersionIndex: -1,
   440  			VersionFlags: VerFlagNone,
   441  			Section:      0x13,
   442  			Value:        0x600698,
   443  			Size:         0x0,
   444  		},
   445  		Symbol{
   446  			Name:         "__JCR_LIST__",
   447  			Info:         0x1,
   448  			Other:        0x0,
   449  			VersionIndex: -1,
   450  			VersionFlags: VerFlagNone,
   451  			Section:      0x14,
   452  			Value:        0x6006A8,
   453  			Size:         0x0,
   454  		},
   455  		Symbol{
   456  			Name:         "__do_global_dtors_aux",
   457  			Info:         0x2,
   458  			Other:        0x0,
   459  			VersionIndex: -1,
   460  			VersionFlags: VerFlagNone,
   461  			Section:      0xD,
   462  			Value:        0x400430,
   463  			Size:         0x0,
   464  		},
   465  		Symbol{
   466  			Name:         "completed.6183",
   467  			Info:         0x1,
   468  			Other:        0x0,
   469  			VersionIndex: -1,
   470  			VersionFlags: VerFlagNone,
   471  			Section:      0x19,
   472  			Value:        0x600898,
   473  			Size:         0x1,
   474  		},
   475  		Symbol{
   476  			Name:         "p.6181",
   477  			Info:         0x1,
   478  			Other:        0x0,
   479  			VersionIndex: -1,
   480  			VersionFlags: VerFlagNone,
   481  			Section:      0x18,
   482  			Value:        0x600890,
   483  			Size:         0x0,
   484  		},
   485  		Symbol{
   486  			Name:         "frame_dummy",
   487  			Info:         0x2,
   488  			Other:        0x0,
   489  			VersionIndex: -1,
   490  			VersionFlags: VerFlagNone,
   491  			Section:      0xD,
   492  			Value:        0x400470,
   493  			Size:         0x0,
   494  		},
   495  		Symbol{
   496  			Name:         "crtstuff.c",
   497  			Info:         0x4,
   498  			Other:        0x0,
   499  			VersionIndex: -1,
   500  			VersionFlags: VerFlagNone,
   501  			Section:      0xFFF1,
   502  			Value:        0x0,
   503  			Size:         0x0,
   504  		},
   505  		Symbol{
   506  			Name:         "__CTOR_END__",
   507  			Info:         0x1,
   508  			Other:        0x0,
   509  			VersionIndex: -1,
   510  			VersionFlags: VerFlagNone,
   511  			Section:      0x12,
   512  			Value:        0x600690,
   513  			Size:         0x0,
   514  		},
   515  		Symbol{
   516  			Name:         "__DTOR_END__",
   517  			Info:         0x1,
   518  			Other:        0x0,
   519  			VersionIndex: -1,
   520  			VersionFlags: VerFlagNone,
   521  			Section:      0x13,
   522  			Value:        0x6006A0,
   523  			Size:         0x0,
   524  		},
   525  		Symbol{
   526  			Name:         "__FRAME_END__",
   527  			Info:         0x1,
   528  			Other:        0x0,
   529  			VersionIndex: -1,
   530  			VersionFlags: VerFlagNone,
   531  			Section:      0x11,
   532  			Value:        0x400680,
   533  			Size:         0x0,
   534  		},
   535  		Symbol{
   536  			Name:         "__JCR_END__",
   537  			Info:         0x1,
   538  			Other:        0x0,
   539  			VersionIndex: -1,
   540  			VersionFlags: VerFlagNone,
   541  			Section:      0x14,
   542  			Value:        0x6006A8,
   543  			Size:         0x0,
   544  		},
   545  		Symbol{
   546  			Name:         "__do_global_ctors_aux",
   547  			Info:         0x2,
   548  			Other:        0x0,
   549  			VersionIndex: -1,
   550  			VersionFlags: VerFlagNone,
   551  			Section:      0xD,
   552  			Value:        0x400560,
   553  			Size:         0x0,
   554  		},
   555  		Symbol{
   556  			Name:         "initfini.c",
   557  			Info:         0x4,
   558  			Other:        0x0,
   559  			VersionIndex: -1,
   560  			VersionFlags: VerFlagNone,
   561  			Section:      0xFFF1,
   562  			Value:        0x0,
   563  			Size:         0x0,
   564  		},
   565  		Symbol{
   566  			Name:         "hello.c",
   567  			Info:         0x4,
   568  			Other:        0x0,
   569  			VersionIndex: -1,
   570  			VersionFlags: VerFlagNone,
   571  			Section:      0xFFF1,
   572  			Value:        0x0,
   573  			Size:         0x0,
   574  		},
   575  		Symbol{
   576  			Name:         "_GLOBAL_OFFSET_TABLE_",
   577  			Info:         0x1,
   578  			Other:        0x2,
   579  			VersionIndex: -1,
   580  			VersionFlags: VerFlagNone,
   581  			Section:      0x17,
   582  			Value:        0x600858,
   583  			Size:         0x0,
   584  		},
   585  		Symbol{
   586  			Name:         "__init_array_end",
   587  			Info:         0x0,
   588  			Other:        0x2,
   589  			VersionIndex: -1,
   590  			VersionFlags: VerFlagNone,
   591  			Section:      0x12,
   592  			Value:        0x600684,
   593  			Size:         0x0,
   594  		},
   595  		Symbol{
   596  			Name:         "__init_array_start",
   597  			Info:         0x0,
   598  			Other:        0x2,
   599  			VersionIndex: -1,
   600  			VersionFlags: VerFlagNone,
   601  			Section:      0x12,
   602  			Value:        0x600684,
   603  			Size:         0x0,
   604  		},
   605  		Symbol{
   606  			Name:         "_DYNAMIC",
   607  			Info:         0x1,
   608  			Other:        0x2,
   609  			VersionIndex: -1,
   610  			VersionFlags: VerFlagNone,
   611  			Section:      0x15,
   612  			Value:        0x6006B0,
   613  			Size:         0x0,
   614  		},
   615  		Symbol{
   616  			Name:         "data_start",
   617  			Info:         0x20,
   618  			Other:        0x0,
   619  			VersionIndex: -1,
   620  			VersionFlags: VerFlagNone,
   621  			Section:      0x18,
   622  			Value:        0x600880,
   623  			Size:         0x0,
   624  		},
   625  		Symbol{
   626  			Name:         "__libc_csu_fini",
   627  			Info:         0x12,
   628  			Other:        0x0,
   629  			VersionIndex: -1,
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