mirror of
https://github.com/autc04/Retro68.git
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263 lines
6.9 KiB
Go
263 lines
6.9 KiB
Go
// Copyright 2016 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package runtime_test
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import (
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"debug/elf"
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"debug/macho"
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"encoding/binary"
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"internal/testenv"
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"io"
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"io/ioutil"
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"os"
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"os/exec"
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"path/filepath"
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"runtime"
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"strings"
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"testing"
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)
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var lldbPath string
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func checkLldbPython(t *testing.T) {
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cmd := exec.Command("lldb", "-P")
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out, err := cmd.CombinedOutput()
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if err != nil {
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t.Skipf("skipping due to issue running lldb: %v\n%s", err, out)
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}
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lldbPath = strings.TrimSpace(string(out))
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cmd = exec.Command("/usr/bin/python2.7", "-c", "import sys;sys.path.append(sys.argv[1]);import lldb; print('go lldb python support')", lldbPath)
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out, err = cmd.CombinedOutput()
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if err != nil {
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t.Skipf("skipping due to issue running python: %v\n%s", err, out)
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}
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if string(out) != "go lldb python support\n" {
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t.Skipf("skipping due to lack of python lldb support: %s", out)
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}
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if runtime.GOOS == "darwin" {
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// Try to see if we have debugging permissions.
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cmd = exec.Command("/usr/sbin/DevToolsSecurity", "-status")
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out, err = cmd.CombinedOutput()
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if err != nil {
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t.Skipf("DevToolsSecurity failed: %v", err)
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} else if !strings.Contains(string(out), "enabled") {
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t.Skip(string(out))
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}
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cmd = exec.Command("/usr/bin/groups")
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out, err = cmd.CombinedOutput()
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if err != nil {
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t.Skipf("groups failed: %v", err)
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} else if !strings.Contains(string(out), "_developer") {
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t.Skip("Not in _developer group")
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}
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}
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}
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const lldbHelloSource = `
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package main
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import "fmt"
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func main() {
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mapvar := make(map[string]string,5)
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mapvar["abc"] = "def"
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mapvar["ghi"] = "jkl"
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intvar := 42
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ptrvar := &intvar
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fmt.Println("hi") // line 10
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_ = ptrvar
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}
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`
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const lldbScriptSource = `
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import sys
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sys.path.append(sys.argv[1])
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import lldb
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import os
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TIMEOUT_SECS = 5
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debugger = lldb.SBDebugger.Create()
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debugger.SetAsync(True)
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target = debugger.CreateTargetWithFileAndArch("a.exe", None)
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if target:
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print "Created target"
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main_bp = target.BreakpointCreateByLocation("main.go", 10)
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if main_bp:
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print "Created breakpoint"
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process = target.LaunchSimple(None, None, os.getcwd())
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if process:
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print "Process launched"
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listener = debugger.GetListener()
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process.broadcaster.AddListener(listener, lldb.SBProcess.eBroadcastBitStateChanged)
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while True:
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event = lldb.SBEvent()
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if listener.WaitForEvent(TIMEOUT_SECS, event):
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if lldb.SBProcess.GetRestartedFromEvent(event):
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continue
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state = process.GetState()
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if state in [lldb.eStateUnloaded, lldb.eStateLaunching, lldb.eStateRunning]:
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continue
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else:
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print "Timeout launching"
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break
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if state == lldb.eStateStopped:
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for t in process.threads:
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if t.GetStopReason() == lldb.eStopReasonBreakpoint:
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print "Hit breakpoint"
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frame = t.GetFrameAtIndex(0)
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if frame:
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if frame.line_entry:
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print "Stopped at %s:%d" % (frame.line_entry.file.basename, frame.line_entry.line)
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if frame.function:
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print "Stopped in %s" % (frame.function.name,)
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var = frame.FindVariable('intvar')
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if var:
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print "intvar = %s" % (var.GetValue(),)
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else:
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print "no intvar"
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else:
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print "Process state", state
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process.Destroy()
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else:
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print "Failed to create target a.exe"
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lldb.SBDebugger.Destroy(debugger)
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sys.exit()
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`
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const expectedLldbOutput = `Created target
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Created breakpoint
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Process launched
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Hit breakpoint
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Stopped at main.go:10
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Stopped in main.main
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intvar = 42
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`
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func TestLldbPython(t *testing.T) {
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testenv.MustHaveGoBuild(t)
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if final := os.Getenv("GOROOT_FINAL"); final != "" && runtime.GOROOT() != final {
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t.Skip("gdb test can fail with GOROOT_FINAL pending")
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}
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checkLldbPython(t)
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dir, err := ioutil.TempDir("", "go-build")
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if err != nil {
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t.Fatalf("failed to create temp directory: %v", err)
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}
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defer os.RemoveAll(dir)
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src := filepath.Join(dir, "main.go")
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err = ioutil.WriteFile(src, []byte(lldbHelloSource), 0644)
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if err != nil {
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t.Fatalf("failed to create file: %v", err)
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}
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cmd := exec.Command("go", "build", "-gcflags", "-N -l", "-o", "a.exe")
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cmd.Dir = dir
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out, err := cmd.CombinedOutput()
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if err != nil {
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t.Fatalf("building source %v\n%s", err, out)
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}
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src = filepath.Join(dir, "script.py")
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err = ioutil.WriteFile(src, []byte(lldbScriptSource), 0755)
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if err != nil {
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t.Fatalf("failed to create script: %v", err)
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}
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cmd = exec.Command("/usr/bin/python2.7", "script.py", lldbPath)
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cmd.Dir = dir
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got, _ := cmd.CombinedOutput()
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if string(got) != expectedLldbOutput {
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if strings.Contains(string(got), "Timeout launching") {
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t.Skip("Timeout launching")
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}
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t.Fatalf("Unexpected lldb output:\n%s", got)
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}
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}
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// Check that aranges are valid even when lldb isn't installed.
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func TestDwarfAranges(t *testing.T) {
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testenv.MustHaveGoBuild(t)
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dir, err := ioutil.TempDir("", "go-build")
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if err != nil {
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t.Fatalf("failed to create temp directory: %v", err)
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}
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defer os.RemoveAll(dir)
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src := filepath.Join(dir, "main.go")
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err = ioutil.WriteFile(src, []byte(lldbHelloSource), 0644)
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if err != nil {
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t.Fatalf("failed to create file: %v", err)
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}
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cmd := exec.Command("go", "build", "-o", "a.exe")
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cmd.Dir = dir
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out, err := cmd.CombinedOutput()
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if err != nil {
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t.Fatalf("building source %v\n%s", err, out)
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}
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filename := filepath.Join(dir, "a.exe")
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if f, err := elf.Open(filename); err == nil {
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sect := f.Section(".debug_aranges")
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if sect == nil {
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t.Fatal("Missing aranges section")
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}
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verifyAranges(t, f.ByteOrder, sect.Open())
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} else if f, err := macho.Open(filename); err == nil {
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sect := f.Section("__debug_aranges")
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if sect == nil {
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t.Fatal("Missing aranges section")
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}
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verifyAranges(t, f.ByteOrder, sect.Open())
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} else {
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t.Skip("Not an elf or macho binary.")
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}
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}
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func verifyAranges(t *testing.T, byteorder binary.ByteOrder, data io.ReadSeeker) {
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var header struct {
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UnitLength uint32 // does not include the UnitLength field
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Version uint16
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Offset uint32
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AddressSize uint8
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SegmentSize uint8
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}
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for {
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offset, err := data.Seek(0, 1)
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if err != nil {
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t.Fatalf("Seek error: %v", err)
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}
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if err = binary.Read(data, byteorder, &header); err == io.EOF {
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return
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} else if err != nil {
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t.Fatalf("Error reading arange header: %v", err)
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}
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tupleSize := int64(header.SegmentSize) + 2*int64(header.AddressSize)
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lastTupleOffset := offset + int64(header.UnitLength) + 4 - tupleSize
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if lastTupleOffset%tupleSize != 0 {
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t.Fatalf("Invalid arange length %d, (addr %d, seg %d)", header.UnitLength, header.AddressSize, header.SegmentSize)
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}
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if _, err = data.Seek(lastTupleOffset, 0); err != nil {
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t.Fatalf("Seek error: %v", err)
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}
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buf := make([]byte, tupleSize)
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if n, err := data.Read(buf); err != nil || int64(n) < tupleSize {
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t.Fatalf("Read error: %v", err)
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}
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for _, val := range buf {
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if val != 0 {
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t.Fatalf("Invalid terminator")
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}
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}
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}
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}
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