| // 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 pe |
| |
| import ( |
| "bytes" |
| "debug/dwarf" |
| "internal/testenv" |
| "os" |
| "os/exec" |
| "path/filepath" |
| "reflect" |
| "regexp" |
| "runtime" |
| "strconv" |
| "testing" |
| "text/template" |
| ) |
| |
| type fileTest struct { |
| file string |
| hdr FileHeader |
| opthdr interface{} |
| sections []*SectionHeader |
| symbols []*Symbol |
| hasNoDwarfInfo bool |
| } |
| |
| var fileTests = []fileTest{ |
| { |
| file: "testdata/gcc-386-mingw-obj", |
| hdr: FileHeader{0x014c, 0x000c, 0x0, 0x64a, 0x1e, 0x0, 0x104}, |
| sections: []*SectionHeader{ |
| {".text", 0, 0, 36, 500, 1440, 0, 3, 0, 0x60300020}, |
| {".data", 0, 0, 0, 0, 0, 0, 0, 0, 3224371264}, |
| {".bss", 0, 0, 0, 0, 0, 0, 0, 0, 3224371328}, |
| {".debug_abbrev", 0, 0, 137, 536, 0, 0, 0, 0, 0x42100000}, |
| {".debug_info", 0, 0, 418, 673, 1470, 0, 7, 0, 1108344832}, |
| {".debug_line", 0, 0, 128, 1091, 1540, 0, 1, 0, 1108344832}, |
| {".rdata", 0, 0, 16, 1219, 0, 0, 0, 0, 1076887616}, |
| {".debug_frame", 0, 0, 52, 1235, 1550, 0, 2, 0, 1110441984}, |
| {".debug_loc", 0, 0, 56, 1287, 0, 0, 0, 0, 1108344832}, |
| {".debug_pubnames", 0, 0, 27, 1343, 1570, 0, 1, 0, 1108344832}, |
| {".debug_pubtypes", 0, 0, 38, 1370, 1580, 0, 1, 0, 1108344832}, |
| {".debug_aranges", 0, 0, 32, 1408, 1590, 0, 2, 0, 1108344832}, |
| }, |
| symbols: []*Symbol{ |
| {".file", 0x0, -2, 0x0, 0x67}, |
| {"_main", 0x0, 1, 0x20, 0x2}, |
| {".text", 0x0, 1, 0x0, 0x3}, |
| {".data", 0x0, 2, 0x0, 0x3}, |
| {".bss", 0x0, 3, 0x0, 0x3}, |
| {".debug_abbrev", 0x0, 4, 0x0, 0x3}, |
| {".debug_info", 0x0, 5, 0x0, 0x3}, |
| {".debug_line", 0x0, 6, 0x0, 0x3}, |
| {".rdata", 0x0, 7, 0x0, 0x3}, |
| {".debug_frame", 0x0, 8, 0x0, 0x3}, |
| {".debug_loc", 0x0, 9, 0x0, 0x3}, |
| {".debug_pubnames", 0x0, 10, 0x0, 0x3}, |
| {".debug_pubtypes", 0x0, 11, 0x0, 0x3}, |
| {".debug_aranges", 0x0, 12, 0x0, 0x3}, |
| {"___main", 0x0, 0, 0x20, 0x2}, |
| {"_puts", 0x0, 0, 0x20, 0x2}, |
| }, |
| }, |
| { |
| file: "testdata/gcc-386-mingw-exec", |
| hdr: FileHeader{0x014c, 0x000f, 0x4c6a1b60, 0x3c00, 0x282, 0xe0, 0x107}, |
| opthdr: &OptionalHeader32{ |
| 0x10b, 0x2, 0x38, 0xe00, 0x1a00, 0x200, 0x1160, 0x1000, 0x2000, 0x400000, 0x1000, 0x200, 0x4, 0x0, 0x1, 0x0, 0x4, 0x0, 0x0, 0x10000, 0x400, 0x14abb, 0x3, 0x0, 0x200000, 0x1000, 0x100000, 0x1000, 0x0, 0x10, |
| [16]DataDirectory{ |
| {0x0, 0x0}, |
| {0x5000, 0x3c8}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x7000, 0x18}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| }, |
| }, |
| sections: []*SectionHeader{ |
| {".text", 0xcd8, 0x1000, 0xe00, 0x400, 0x0, 0x0, 0x0, 0x0, 0x60500060}, |
| {".data", 0x10, 0x2000, 0x200, 0x1200, 0x0, 0x0, 0x0, 0x0, 0xc0300040}, |
| {".rdata", 0x120, 0x3000, 0x200, 0x1400, 0x0, 0x0, 0x0, 0x0, 0x40300040}, |
| {".bss", 0xdc, 0x4000, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc0400080}, |
| {".idata", 0x3c8, 0x5000, 0x400, 0x1600, 0x0, 0x0, 0x0, 0x0, 0xc0300040}, |
| {".CRT", 0x18, 0x6000, 0x200, 0x1a00, 0x0, 0x0, 0x0, 0x0, 0xc0300040}, |
| {".tls", 0x20, 0x7000, 0x200, 0x1c00, 0x0, 0x0, 0x0, 0x0, 0xc0300040}, |
| {".debug_aranges", 0x20, 0x8000, 0x200, 0x1e00, 0x0, 0x0, 0x0, 0x0, 0x42100000}, |
| {".debug_pubnames", 0x51, 0x9000, 0x200, 0x2000, 0x0, 0x0, 0x0, 0x0, 0x42100000}, |
| {".debug_pubtypes", 0x91, 0xa000, 0x200, 0x2200, 0x0, 0x0, 0x0, 0x0, 0x42100000}, |
| {".debug_info", 0xe22, 0xb000, 0x1000, 0x2400, 0x0, 0x0, 0x0, 0x0, 0x42100000}, |
| {".debug_abbrev", 0x157, 0xc000, 0x200, 0x3400, 0x0, 0x0, 0x0, 0x0, 0x42100000}, |
| {".debug_line", 0x144, 0xd000, 0x200, 0x3600, 0x0, 0x0, 0x0, 0x0, 0x42100000}, |
| {".debug_frame", 0x34, 0xe000, 0x200, 0x3800, 0x0, 0x0, 0x0, 0x0, 0x42300000}, |
| {".debug_loc", 0x38, 0xf000, 0x200, 0x3a00, 0x0, 0x0, 0x0, 0x0, 0x42100000}, |
| }, |
| }, |
| { |
| file: "testdata/gcc-386-mingw-no-symbols-exec", |
| hdr: FileHeader{0x14c, 0x8, 0x69676572, 0x0, 0x0, 0xe0, 0x30f}, |
| opthdr: &OptionalHeader32{0x10b, 0x2, 0x18, 0xe00, 0x1e00, 0x200, 0x1280, 0x1000, 0x2000, 0x400000, 0x1000, 0x200, 0x4, 0x0, 0x1, 0x0, 0x4, 0x0, 0x0, 0x9000, 0x400, 0x5306, 0x3, 0x0, 0x200000, 0x1000, 0x100000, 0x1000, 0x0, 0x10, |
| [16]DataDirectory{ |
| {0x0, 0x0}, |
| {0x6000, 0x378}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x8004, 0x18}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x60b8, 0x7c}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| }, |
| }, |
| sections: []*SectionHeader{ |
| {".text", 0xc64, 0x1000, 0xe00, 0x400, 0x0, 0x0, 0x0, 0x0, 0x60500060}, |
| {".data", 0x10, 0x2000, 0x200, 0x1200, 0x0, 0x0, 0x0, 0x0, 0xc0300040}, |
| {".rdata", 0x134, 0x3000, 0x200, 0x1400, 0x0, 0x0, 0x0, 0x0, 0x40300040}, |
| {".eh_fram", 0x3a0, 0x4000, 0x400, 0x1600, 0x0, 0x0, 0x0, 0x0, 0x40300040}, |
| {".bss", 0x60, 0x5000, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc0300080}, |
| {".idata", 0x378, 0x6000, 0x400, 0x1a00, 0x0, 0x0, 0x0, 0x0, 0xc0300040}, |
| {".CRT", 0x18, 0x7000, 0x200, 0x1e00, 0x0, 0x0, 0x0, 0x0, 0xc0300040}, |
| {".tls", 0x20, 0x8000, 0x200, 0x2000, 0x0, 0x0, 0x0, 0x0, 0xc0300040}, |
| }, |
| hasNoDwarfInfo: true, |
| }, |
| { |
| file: "testdata/gcc-amd64-mingw-obj", |
| hdr: FileHeader{0x8664, 0x6, 0x0, 0x198, 0x12, 0x0, 0x4}, |
| sections: []*SectionHeader{ |
| {".text", 0x0, 0x0, 0x30, 0x104, 0x15c, 0x0, 0x3, 0x0, 0x60500020}, |
| {".data", 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc0500040}, |
| {".bss", 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc0500080}, |
| {".rdata", 0x0, 0x0, 0x10, 0x134, 0x0, 0x0, 0x0, 0x0, 0x40500040}, |
| {".xdata", 0x0, 0x0, 0xc, 0x144, 0x0, 0x0, 0x0, 0x0, 0x40300040}, |
| {".pdata", 0x0, 0x0, 0xc, 0x150, 0x17a, 0x0, 0x3, 0x0, 0x40300040}, |
| }, |
| symbols: []*Symbol{ |
| {".file", 0x0, -2, 0x0, 0x67}, |
| {"main", 0x0, 1, 0x20, 0x2}, |
| {".text", 0x0, 1, 0x0, 0x3}, |
| {".data", 0x0, 2, 0x0, 0x3}, |
| {".bss", 0x0, 3, 0x0, 0x3}, |
| {".rdata", 0x0, 4, 0x0, 0x3}, |
| {".xdata", 0x0, 5, 0x0, 0x3}, |
| {".pdata", 0x0, 6, 0x0, 0x3}, |
| {"__main", 0x0, 0, 0x20, 0x2}, |
| {"puts", 0x0, 0, 0x20, 0x2}, |
| }, |
| hasNoDwarfInfo: true, |
| }, |
| { |
| file: "testdata/gcc-amd64-mingw-exec", |
| hdr: FileHeader{0x8664, 0x11, 0x53e4364f, 0x39600, 0x6fc, 0xf0, 0x27}, |
| opthdr: &OptionalHeader64{ |
| 0x20b, 0x2, 0x16, 0x6a00, 0x2400, 0x1600, 0x14e0, 0x1000, 0x400000, 0x1000, 0x200, 0x4, 0x0, 0x0, 0x0, 0x5, 0x2, 0x0, 0x45000, 0x600, 0x46f19, 0x3, 0x0, 0x200000, 0x1000, 0x100000, 0x1000, 0x0, 0x10, |
| [16]DataDirectory{ |
| {0x0, 0x0}, |
| {0xe000, 0x990}, |
| {0x0, 0x0}, |
| {0xa000, 0x498}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x10000, 0x28}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0xe254, 0x218}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| }}, |
| sections: []*SectionHeader{ |
| {".text", 0x6860, 0x1000, 0x6a00, 0x600, 0x0, 0x0, 0x0, 0x0, 0x60500020}, |
| {".data", 0xe0, 0x8000, 0x200, 0x7000, 0x0, 0x0, 0x0, 0x0, 0xc0500040}, |
| {".rdata", 0x6b0, 0x9000, 0x800, 0x7200, 0x0, 0x0, 0x0, 0x0, 0x40600040}, |
| {".pdata", 0x498, 0xa000, 0x600, 0x7a00, 0x0, 0x0, 0x0, 0x0, 0x40300040}, |
| {".xdata", 0x488, 0xb000, 0x600, 0x8000, 0x0, 0x0, 0x0, 0x0, 0x40300040}, |
| {".bss", 0x1410, 0xc000, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc0600080}, |
| {".idata", 0x990, 0xe000, 0xa00, 0x8600, 0x0, 0x0, 0x0, 0x0, 0xc0300040}, |
| {".CRT", 0x68, 0xf000, 0x200, 0x9000, 0x0, 0x0, 0x0, 0x0, 0xc0400040}, |
| {".tls", 0x48, 0x10000, 0x200, 0x9200, 0x0, 0x0, 0x0, 0x0, 0xc0600040}, |
| {".debug_aranges", 0x600, 0x11000, 0x600, 0x9400, 0x0, 0x0, 0x0, 0x0, 0x42500040}, |
| {".debug_info", 0x1316e, 0x12000, 0x13200, 0x9a00, 0x0, 0x0, 0x0, 0x0, 0x42100040}, |
| {".debug_abbrev", 0x2ccb, 0x26000, 0x2e00, 0x1cc00, 0x0, 0x0, 0x0, 0x0, 0x42100040}, |
| {".debug_line", 0x3c4d, 0x29000, 0x3e00, 0x1fa00, 0x0, 0x0, 0x0, 0x0, 0x42100040}, |
| {".debug_frame", 0x18b8, 0x2d000, 0x1a00, 0x23800, 0x0, 0x0, 0x0, 0x0, 0x42400040}, |
| {".debug_str", 0x396, 0x2f000, 0x400, 0x25200, 0x0, 0x0, 0x0, 0x0, 0x42100040}, |
| {".debug_loc", 0x13240, 0x30000, 0x13400, 0x25600, 0x0, 0x0, 0x0, 0x0, 0x42100040}, |
| {".debug_ranges", 0xa70, 0x44000, 0xc00, 0x38a00, 0x0, 0x0, 0x0, 0x0, 0x42100040}, |
| }, |
| }, |
| { |
| // testdata/vmlinuz-4.15.0-47-generic is a trimmed down version of Linux Kernel image. |
| // The original Linux Kernel image is about 8M and it is not recommended to add such a big binary file to the repo. |
| // Moreover only a very small portion of the original Kernel image was being parsed by debug/pe package. |
| // In order to identify this portion, the original image was first parsed by modified debug/pe package. |
| // Modification essentially communicated reader's positions before and after parsing. |
| // Finally, bytes between those positions where written to a separate file, |
| // generating trimmed down version Linux Kernel image used in this test case. |
| file: "testdata/vmlinuz-4.15.0-47-generic", |
| hdr: FileHeader{0x8664, 0x4, 0x0, 0x0, 0x1, 0xa0, 0x206}, |
| opthdr: &OptionalHeader64{ |
| 0x20b, 0x2, 0x14, 0x7c0590, 0x0, 0x168f870, 0x4680, 0x200, 0x0, 0x20, 0x20, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1e50000, 0x200, 0x7c3ab0, 0xa, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x6, |
| [16]DataDirectory{ |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x7c07a0, 0x778}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| {0x0, 0x0}, |
| }}, |
| sections: []*SectionHeader{ |
| {".setup", 0x41e0, 0x200, 0x41e0, 0x200, 0x0, 0x0, 0x0, 0x0, 0x60500020}, |
| {".reloc", 0x20, 0x43e0, 0x20, 0x43e0, 0x0, 0x0, 0x0, 0x0, 0x42100040}, |
| {".text", 0x7bc390, 0x4400, 0x7bc390, 0x4400, 0x0, 0x0, 0x0, 0x0, 0x60500020}, |
| {".bss", 0x168f870, 0x7c0790, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc8000080}, |
| }, |
| hasNoDwarfInfo: true, |
| }, |
| } |
| |
| func isOptHdrEq(a, b interface{}) bool { |
| switch va := a.(type) { |
| case *OptionalHeader32: |
| vb, ok := b.(*OptionalHeader32) |
| if !ok { |
| return false |
| } |
| return *vb == *va |
| case *OptionalHeader64: |
| vb, ok := b.(*OptionalHeader64) |
| if !ok { |
| return false |
| } |
| return *vb == *va |
| case nil: |
| return b == nil |
| } |
| return false |
| } |
| |
| 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 |
| } |
| if !isOptHdrEq(tt.opthdr, f.OptionalHeader) { |
| t.Errorf("open %s:\n\thave %#v\n\twant %#v\n", tt.file, f.OptionalHeader, tt.opthdr) |
| continue |
| } |
| |
| 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) |
| } |
| for i, have := range f.Symbols { |
| if i >= len(tt.symbols) { |
| break |
| } |
| want := tt.symbols[i] |
| if !reflect.DeepEqual(have, want) { |
| t.Errorf("open %s, symbol %d:\n\thave %#v\n\twant %#v\n", tt.file, i, have, want) |
| } |
| } |
| if !tt.hasNoDwarfInfo { |
| _, err = f.DWARF() |
| if err != nil { |
| t.Errorf("fetching %s dwarf details failed: %v", tt.file, err) |
| } |
| } |
| } |
| } |
| |
| func TestOpenFailure(t *testing.T) { |
| filename := "file.go" // not a PE file |
| _, err := Open(filename) // don't crash |
| if err == nil { |
| t.Errorf("open %s: succeeded unexpectedly", filename) |
| } |
| } |
| |
| const ( |
| linkNoCgo = iota |
| linkCgoDefault |
| linkCgoInternal |
| linkCgoExternal |
| ) |
| |
| func getImageBase(f *File) uintptr { |
| switch oh := f.OptionalHeader.(type) { |
| case *OptionalHeader32: |
| return uintptr(oh.ImageBase) |
| case *OptionalHeader64: |
| return uintptr(oh.ImageBase) |
| default: |
| panic("unexpected optionalheader type") |
| } |
| } |
| |
| func testDWARF(t *testing.T, linktype int) { |
| if runtime.GOOS != "windows" { |
| t.Skip("skipping windows only test") |
| } |
| testenv.MustHaveGoRun(t) |
| |
| tmpdir, err := os.MkdirTemp("", "TestDWARF") |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer os.RemoveAll(tmpdir) |
| |
| src := filepath.Join(tmpdir, "a.go") |
| file, err := os.Create(src) |
| if err != nil { |
| t.Fatal(err) |
| } |
| err = template.Must(template.New("main").Parse(testprog)).Execute(file, linktype != linkNoCgo) |
| if err != nil { |
| if err := file.Close(); err != nil { |
| t.Error(err) |
| } |
| t.Fatal(err) |
| } |
| if err := file.Close(); err != nil { |
| t.Fatal(err) |
| } |
| |
| exe := filepath.Join(tmpdir, "a.exe") |
| args := []string{"build", "-o", exe} |
| switch linktype { |
| case linkNoCgo: |
| case linkCgoDefault: |
| case linkCgoInternal: |
| args = append(args, "-ldflags", "-linkmode=internal") |
| case linkCgoExternal: |
| args = append(args, "-ldflags", "-linkmode=external") |
| default: |
| t.Fatalf("invalid linktype parameter of %v", linktype) |
| } |
| args = append(args, src) |
| out, err := exec.Command(testenv.GoToolPath(t), args...).CombinedOutput() |
| if err != nil { |
| t.Fatalf("building test executable for linktype %d failed: %s %s", linktype, err, out) |
| } |
| out, err = exec.Command(exe).CombinedOutput() |
| if err != nil { |
| t.Fatalf("running test executable failed: %s %s", err, out) |
| } |
| t.Logf("Testprog output:\n%s", string(out)) |
| |
| matches := regexp.MustCompile("offset=(.*)\n").FindStringSubmatch(string(out)) |
| if len(matches) < 2 { |
| t.Fatalf("unexpected program output: %s", out) |
| } |
| wantoffset, err := strconv.ParseUint(matches[1], 0, 64) |
| if err != nil { |
| t.Fatalf("unexpected main offset %q: %s", matches[1], err) |
| } |
| |
| f, err := Open(exe) |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer f.Close() |
| |
| imageBase := getImageBase(f) |
| |
| var foundDebugGDBScriptsSection bool |
| for _, sect := range f.Sections { |
| if sect.Name == ".debug_gdb_scripts" { |
| foundDebugGDBScriptsSection = true |
| } |
| } |
| if !foundDebugGDBScriptsSection { |
| t.Error(".debug_gdb_scripts section is not found") |
| } |
| |
| d, err := f.DWARF() |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| // look for main.main |
| r := d.Reader() |
| for { |
| e, err := r.Next() |
| if err != nil { |
| t.Fatal("r.Next:", err) |
| } |
| if e == nil { |
| break |
| } |
| if e.Tag == dwarf.TagSubprogram { |
| name, ok := e.Val(dwarf.AttrName).(string) |
| if ok && name == "main.main" { |
| t.Logf("Found main.main") |
| addr, ok := e.Val(dwarf.AttrLowpc).(uint64) |
| if !ok { |
| t.Fatal("Failed to get AttrLowpc") |
| } |
| offset := uintptr(addr) - imageBase |
| if offset != uintptr(wantoffset) { |
| t.Fatalf("Runtime offset (0x%x) did "+ |
| "not match dwarf offset "+ |
| "(0x%x)", wantoffset, offset) |
| } |
| return |
| } |
| } |
| } |
| t.Fatal("main.main not found") |
| } |
| |
| func TestBSSHasZeros(t *testing.T) { |
| testenv.MustHaveExec(t) |
| |
| if runtime.GOOS != "windows" { |
| t.Skip("skipping windows only test") |
| } |
| gccpath, err := exec.LookPath("gcc") |
| if err != nil { |
| t.Skip("skipping test: gcc is missing") |
| } |
| |
| tmpdir, err := os.MkdirTemp("", "TestBSSHasZeros") |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer os.RemoveAll(tmpdir) |
| |
| srcpath := filepath.Join(tmpdir, "a.c") |
| src := ` |
| #include <stdio.h> |
| |
| int zero = 0; |
| |
| int |
| main(void) |
| { |
| printf("%d\n", zero); |
| return 0; |
| } |
| ` |
| err = os.WriteFile(srcpath, []byte(src), 0644) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| objpath := filepath.Join(tmpdir, "a.obj") |
| cmd := exec.Command(gccpath, "-c", srcpath, "-o", objpath) |
| out, err := cmd.CombinedOutput() |
| if err != nil { |
| t.Fatalf("failed to build object file: %v - %v", err, string(out)) |
| } |
| |
| f, err := Open(objpath) |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer f.Close() |
| |
| var bss *Section |
| for _, sect := range f.Sections { |
| if sect.Name == ".bss" { |
| bss = sect |
| break |
| } |
| } |
| if bss == nil { |
| t.Fatal("could not find .bss section") |
| } |
| data, err := bss.Data() |
| if err != nil { |
| t.Fatal(err) |
| } |
| if len(data) == 0 { |
| t.Fatalf("%s file .bss section cannot be empty", objpath) |
| } |
| for _, b := range data { |
| if b != 0 { |
| t.Fatalf(".bss section has non zero bytes: %v", data) |
| } |
| } |
| } |
| |
| func TestDWARF(t *testing.T) { |
| testDWARF(t, linkNoCgo) |
| } |
| |
| const testprog = ` |
| package main |
| |
| import "fmt" |
| import "syscall" |
| import "unsafe" |
| {{if .}}import "C" |
| {{end}} |
| |
| // struct MODULEINFO from the Windows SDK |
| type moduleinfo struct { |
| BaseOfDll uintptr |
| SizeOfImage uint32 |
| EntryPoint uintptr |
| } |
| |
| func add(p unsafe.Pointer, x uintptr) unsafe.Pointer { |
| return unsafe.Pointer(uintptr(p) + x) |
| } |
| |
| func funcPC(f interface{}) uintptr { |
| var a uintptr |
| return **(**uintptr)(add(unsafe.Pointer(&f), unsafe.Sizeof(a))) |
| } |
| |
| func main() { |
| kernel32 := syscall.MustLoadDLL("kernel32.dll") |
| psapi := syscall.MustLoadDLL("psapi.dll") |
| getModuleHandle := kernel32.MustFindProc("GetModuleHandleW") |
| getCurrentProcess := kernel32.MustFindProc("GetCurrentProcess") |
| getModuleInformation := psapi.MustFindProc("GetModuleInformation") |
| |
| procHandle, _, _ := getCurrentProcess.Call() |
| moduleHandle, _, err := getModuleHandle.Call(0) |
| if moduleHandle == 0 { |
| panic(fmt.Sprintf("GetModuleHandle() failed: %d", err)) |
| } |
| |
| var info moduleinfo |
| ret, _, err := getModuleInformation.Call(procHandle, moduleHandle, |
| uintptr(unsafe.Pointer(&info)), unsafe.Sizeof(info)) |
| |
| if ret == 0 { |
| panic(fmt.Sprintf("GetModuleInformation() failed: %d", err)) |
| } |
| |
| offset := funcPC(main) - info.BaseOfDll |
| fmt.Printf("base=0x%x\n", info.BaseOfDll) |
| fmt.Printf("main=%p\n", main) |
| fmt.Printf("offset=0x%x\n", offset) |
| } |
| ` |
| |
| func TestBuildingWindowsGUI(t *testing.T) { |
| testenv.MustHaveGoBuild(t) |
| |
| if runtime.GOOS != "windows" { |
| t.Skip("skipping windows only test") |
| } |
| tmpdir, err := os.MkdirTemp("", "TestBuildingWindowsGUI") |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer os.RemoveAll(tmpdir) |
| |
| src := filepath.Join(tmpdir, "a.go") |
| err = os.WriteFile(src, []byte(`package main; func main() {}`), 0644) |
| if err != nil { |
| t.Fatal(err) |
| } |
| exe := filepath.Join(tmpdir, "a.exe") |
| cmd := exec.Command(testenv.GoToolPath(t), "build", "-ldflags", "-H=windowsgui", "-o", exe, src) |
| out, err := cmd.CombinedOutput() |
| if err != nil { |
| t.Fatalf("building test executable failed: %s %s", err, out) |
| } |
| |
| f, err := Open(exe) |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer f.Close() |
| |
| switch oh := f.OptionalHeader.(type) { |
| case *OptionalHeader32: |
| if oh.Subsystem != IMAGE_SUBSYSTEM_WINDOWS_GUI { |
| t.Errorf("unexpected Subsystem value: have %d, but want %d", oh.Subsystem, IMAGE_SUBSYSTEM_WINDOWS_GUI) |
| } |
| case *OptionalHeader64: |
| if oh.Subsystem != IMAGE_SUBSYSTEM_WINDOWS_GUI { |
| t.Errorf("unexpected Subsystem value: have %d, but want %d", oh.Subsystem, IMAGE_SUBSYSTEM_WINDOWS_GUI) |
| } |
| default: |
| t.Fatalf("unexpected OptionalHeader type: have %T, but want *pe.OptionalHeader32 or *pe.OptionalHeader64", oh) |
| } |
| } |
| |
| func TestImportTableInUnknownSection(t *testing.T) { |
| if runtime.GOOS != "windows" { |
| t.Skip("skipping Windows-only test") |
| } |
| |
| // ws2_32.dll import table is located in ".rdata" section, |
| // so it is good enough to test issue #16103. |
| const filename = "ws2_32.dll" |
| path, err := exec.LookPath(filename) |
| if err != nil { |
| t.Fatalf("unable to locate required file %q in search path: %s", filename, err) |
| } |
| |
| f, err := Open(path) |
| if err != nil { |
| t.Error(err) |
| } |
| defer f.Close() |
| |
| // now we can extract its imports |
| symbols, err := f.ImportedSymbols() |
| if err != nil { |
| t.Error(err) |
| } |
| |
| if len(symbols) == 0 { |
| t.Fatalf("unable to locate any imported symbols within file %q.", path) |
| } |
| } |
| |
| func TestInvalidOptionalHeaderMagic(t *testing.T) { |
| // Files with invalid optional header magic should return error from NewFile() |
| // (see https://golang.org/issue/30250 and https://golang.org/issue/32126 for details). |
| // Input generated by gofuzz |
| data := []byte("\x00\x00\x00\x0000000\x00\x00\x00\x00\x00\x00\x000000" + |
| "00000000000000000000" + |
| "000000000\x00\x00\x0000000000" + |
| "00000000000000000000" + |
| "0000000000000000") |
| |
| _, err := NewFile(bytes.NewReader(data)) |
| if err == nil { |
| t.Fatal("NewFile succeeded unexpectedly") |
| } |
| } |
| |
| func TestImportedSymbolsNoPanicMissingOptionalHeader(t *testing.T) { |
| // https://golang.org/issue/30250 |
| // ImportedSymbols shouldn't panic if optional headers is missing |
| data, err := os.ReadFile("testdata/gcc-amd64-mingw-obj") |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| f, err := NewFile(bytes.NewReader(data)) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| if f.OptionalHeader != nil { |
| t.Fatal("expected f.OptionalHeader to be nil, received non-nil optional header") |
| } |
| |
| syms, err := f.ImportedSymbols() |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| if len(syms) != 0 { |
| t.Fatalf("expected len(syms) == 0, received len(syms) = %d", len(syms)) |
| } |
| |
| } |
| |
| func TestImportedSymbolsNoPanicWithSliceOutOfBound(t *testing.T) { |
| // https://golang.org/issue/30253 |
| // ImportedSymbols shouldn't panic with slice out of bounds |
| // Input generated by gofuzz |
| data := []byte("L\x01\b\x00regi\x00\x00\x00\x00\x00\x00\x00\x00\xe0\x00\x0f\x03" + |
| "\v\x01\x02\x18\x00\x0e\x00\x00\x00\x1e\x00\x00\x00\x02\x00\x00\x80\x12\x00\x00" + |
| "\x00\x10\x00\x00\x00 \x00\x00\x00\x00@\x00\x00\x10\x00\x00\x00\x02\x00\x00" + |
| "\x04\x00\x00\x00\x01\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x90\x00\x00" + |
| "\x00\x04\x00\x00\x06S\x00\x00\x03\x00\x00\x00\x00\x00 \x00\x00\x10\x00\x00" + |
| "\x00\x00\x10\x00\x00\x10\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00" + |
| "\x00\x00\x00\x00\x00`\x00\x00x\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" + |
| "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" + |
| "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" + |
| "\x00\x00\x00\x00\x00\x00\x00\x00\x04\x80\x00\x00\x18\x00\x00\x00\x00\x00\x00\x00" + |
| "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xb8`\x00\x00|\x00\x00\x00" + |
| "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" + |
| "\x00\x00\x00\x00.text\x00\x00\x00d\f\x00\x00\x00\x10\x00\x00" + |
| "\x00\x0e\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" + |
| "`\x00P`.data\x00\x00\x00\x10\x00\x00\x00\x00 \x00\x00" + |
| "\x00\x02\x00\x00\x00\x12\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" + |
| "@\x000\xc0.rdata\x00\x004\x01\x00\x00\x000\x00\x00" + |
| "\x00\x02\x00\x00\x00\x14\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" + |
| "@\x000@.eh_fram\xa0\x03\x00\x00\x00@\x00\x00" + |
| "\x00\x04\x00\x00\x00\x16\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" + |
| "@\x000@.bss\x00\x00\x00\x00`\x00\x00\x00\x00P\x00\x00" + |
| "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" + |
| "\x80\x000\xc0.idata\x00\x00x\x03\x00\x00\x00`\x00\x00" + |
| "\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00@\x00" + |
| "0\xc0.CRT\x00\x00\x00\x00\x18\x00\x00\x00\x00p\x00\x00\x00\x02" + |
| "\x00\x00\x00\x1e\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00@\x00" + |
| "0\xc0.tls\x00\x00\x00\x00 \x00\x00\x00\x00\x80\x00\x00\x00\x02" + |
| "\x00\x00\x00 \x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x001\xc9" + |
| "H\x895\x1d") |
| |
| f, err := NewFile(bytes.NewReader(data)) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| syms, err := f.ImportedSymbols() |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| if len(syms) != 0 { |
| t.Fatalf("expected len(syms) == 0, received len(syms) = %d", len(syms)) |
| } |
| } |
