elf_test.go

     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 elf
     6  
     7  import (
     8  	"fmt"
     9  	"testing"
    10  )
    11  
    12  type nameTest struct {
    13  	val any
    14  	str string
    15  }
    16  
    17  var nameTests = []nameTest{
    18  	{ELFOSABI_LINUX, "ELFOSABI_LINUX"},
    19  	{ET_EXEC, "ET_EXEC"},
    20  	{EM_860, "EM_860"},
    21  	{SHN_LOPROC, "SHN_LOPROC"},
    22  	{SHT_PROGBITS, "SHT_PROGBITS"},
    23  	{SHF_MERGE + SHF_TLS, "SHF_MERGE+SHF_TLS"},
    24  	{PT_LOAD, "PT_LOAD"},
    25  	{PF_W + PF_R + 0x50, "PF_W+PF_R+0x50"},
    26  	{DT_SYMBOLIC, "DT_SYMBOLIC"},
    27  	{DF_BIND_NOW, "DF_BIND_NOW"},
    28  	{NT_FPREGSET, "NT_FPREGSET"},
    29  	{STB_GLOBAL, "STB_GLOBAL"},
    30  	{STT_COMMON, "STT_COMMON"},
    31  	{STV_HIDDEN, "STV_HIDDEN"},
    32  	{R_X86_64_PC32, "R_X86_64_PC32"},
    33  	{R_ALPHA_OP_PUSH, "R_ALPHA_OP_PUSH"},
    34  	{R_ARM_THM_ABS5, "R_ARM_THM_ABS5"},
    35  	{R_386_GOT32, "R_386_GOT32"},
    36  	{R_PPC_GOT16_HI, "R_PPC_GOT16_HI"},
    37  	{R_SPARC_GOT22, "R_SPARC_GOT22"},
    38  	{ET_LOOS + 5, "ET_LOOS+5"},
    39  	{ProgFlag(0x50), "0x50"},
    40  }
    41  
    42  func TestNames(t *testing.T) {
    43  	for i, tt := range nameTests {
    44  		s := fmt.Sprint(tt.val)
    45  		if s != tt.str {
    46  			t.Errorf("#%d: Sprint(%d) = %q, want %q", i, tt.val, s, tt.str)
    47  		}
    48  	}
    49  }
    50  
    51  func TestNobitsSection(t *testing.T) {
    52  	const testdata = "testdata/gcc-amd64-linux-exec"
    53  	f, err := Open(testdata)
    54  	if err != nil {
    55  		t.Fatalf("could not read %s: %v", testdata, err)
    56  	}
    57  	defer f.Close()
    58  	bss := f.Section(".bss")
    59  	bssData, err := bss.Data()
    60  	if err != nil {
    61  		t.Fatalf("error reading .bss section: %v", err)
    62  	}
    63  	if g, w := uint64(len(bssData)), bss.Size; g != w {
    64  		t.Errorf(".bss section length mismatch: got %d, want %d", g, w)
    65  	}
    66  	for i := range bssData {
    67  		if bssData[i] != 0 {
    68  			t.Fatalf("unexpected non-zero byte at offset %d: %#x", i, bssData[i])
    69  		}
    70  	}
    71  }
    72
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