58c1f54578
Fix bug involving detecting whether or not we have stepped into another function when we plan on return from the function we are currently in.
65 lines
1.2 KiB
Go
65 lines
1.2 KiB
Go
package frame_test
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import (
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"encoding/binary"
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"path/filepath"
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"syscall"
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"testing"
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"github.com/derekparker/dbg/_helper"
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"github.com/derekparker/dbg/proctl"
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)
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func TestFindReturnAddress(t *testing.T) {
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var testfile, _ = filepath.Abs("../../_fixtures/testnextprog")
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helper.WithTestProcess(testfile, t, func(p *proctl.DebuggedProcess) {
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var (
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fdes = p.FrameEntries
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gsd = p.GoSymTable
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)
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testsourcefile := testfile + ".go"
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start, _, err := gsd.LineToPC(testsourcefile, 24)
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if err != nil {
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t.Fatal(err)
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}
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_, err = p.Break(uintptr(start))
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if err != nil {
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t.Fatal(err)
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}
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err = p.Continue()
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if err != nil {
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t.Fatal(err)
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}
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regs, err := p.Registers()
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if err != nil {
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t.Fatal(err)
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}
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fde, err := fdes.FDEForPC(start)
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if err != nil {
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t.Fatal(err)
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}
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ret := fde.ReturnAddressOffset(start)
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if err != nil {
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t.Fatal(err)
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}
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addr := uint64(int64(regs.Rsp) + ret)
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data := make([]byte, 8)
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syscall.PtracePeekText(p.Pid, uintptr(addr), data)
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addr = binary.LittleEndian.Uint64(data)
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expected := uint64(0x400ed3)
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if addr != expected {
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t.Fatalf("return address not found correctly, expected %#v got %#v", expected, addr)
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}
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})
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}
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