99 lines
1.9 KiB
Go
99 lines
1.9 KiB
Go
package frame
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import (
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"bytes"
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"debug/elf"
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"os"
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"path/filepath"
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"testing"
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)
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func grabDebugFrameSection(fp string, t *testing.T) []byte {
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p, err := filepath.Abs("../_fixtures/testprog")
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if err != nil {
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t.Fatal(err)
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}
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f, err := os.Open(p)
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if err != nil {
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t.Fatal(err)
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}
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ef, err := elf.NewFile(f)
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if err != nil {
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t.Fatal(err)
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}
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data, err := ef.Section(".debug_frame").Data()
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if err != nil {
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t.Fatal(err)
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}
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return data
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}
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func TestdecodeULEB128(t *testing.T) {
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var leb128 = bytes.NewBuffer([]byte{0xE5, 0x8E, 0x26})
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n, c := decodeULEB128(leb128)
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if n != 624485 {
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t.Fatal("Number was not decoded properly, got: ", n, c)
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}
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}
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func TestParseString(t *testing.T) {
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bstr := bytes.NewBuffer([]byte{'h', 'i', 0x0, 0xFF, 0xCC})
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str, _ := parseString(bstr)
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if str != "hi" {
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t.Fatal("String was not parsed correctly")
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}
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}
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func TestParse(t *testing.T) {
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data := grabDebugFrameSection("../fixtures/testprog", t)
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ce := Parse(data)[0]
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if ce.Length != 16 {
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t.Fatal("Length was not parsed correctly")
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}
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if ce.CIE_id != 0xffffffff {
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t.Fatal("CIE id was not parsed correctly")
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}
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if ce.Version != 0x3 {
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t.Fatalf("Version was not parsed correctly expected %#v got %#v, data was %#v", 0x3, ce.Version, data[0:40])
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}
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if ce.Augmentation != "" {
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t.Fatal("Augmentation was not parsed correctly")
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}
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if ce.CodeAlignmentFactor != 0x1 {
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t.Fatal("Code Alignment Factor was not parsed correctly")
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}
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if ce.DataAlignmentFactor != 0x7c {
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t.Fatal("Data Alignment Factor was not parsed correctly")
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}
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fe := ce.FrameDescriptorEntries[0]
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if fe.Length != 32 {
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t.Fatal("Length was not parsed correctly")
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}
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if fe.CIE_pointer != ce {
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t.Fatal("Frame entry does not point to parent CIE")
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}
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if fe.InitialLocation != 0x400c00 {
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t.Fatalf("Initial location not parsed correctly, got %#v", fe.InitialLocation)
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}
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if fe.AddressRange != 0x2b {
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t.Fatalf("Address range not parsed correctly %#v\n%#v", fe.AddressRange, data[15:48])
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}
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}
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