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debug.vbs
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debug.vbs
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' Visual Studio QEMU debugging script.
'
' I like invoking vbs as much as anyone else, but we need to download and unzip our
' firmware file, as well as launch QEMU, and neither Powershell or a standard batch
' can do that without having an extra console appearing.
'
' Note: You may get a prompt from the firewall when trying to download the BIOS file
' Modify these variables as needed
QEMU_PATH = "C:\Program Files\qemu\"
' You can add something like "-S -gdb tcp:127.0.0.1:1234" if you plan to use gdb to debug
QEMU_OPTS = "-net none -monitor none -parallel none"
' Set to True if you need to download a file that might be cached locally
NO_CACHE = False
' You shouldn't have to modify anything below this
TARGET = WScript.Arguments(1)
If (TARGET = "x86") Then
UEFI_EXT = "ia32"
QEMU_ARCH = "i386"
FW_BASE = "OVMF"
ElseIf (TARGET = "x64") Then
UEFI_EXT = "x64"
QEMU_ARCH = "x86_64"
FW_BASE = "OVMF"
ElseIf (TARGET = "ARM") Then
UEFI_EXT = "arm"
QEMU_ARCH = "arm"
FW_BASE = "QEMU_EFI"
' You can also add '-device VGA' to the options below, to get graphics output.
' But if you do, be mindful that the keyboard input may not work... :(
QEMU_OPTS = "-M virt -cpu cortex-a15 " & QEMU_OPTS
ElseIf (TARGET = "ARM64") Then
UEFI_EXT = "aa64"
QEMU_ARCH = "aarch64"
FW_BASE = "QEMU_EFI"
QEMU_OPTS = "-M virt -cpu cortex-a57 " & QEMU_OPTS
Else
MsgBox("Unsupported debug target: " & TARGET)
Call WScript.Quit(1)
End If
BOOT_NAME = "boot" & UEFI_EXT & ".efi"
QEMU_EXE = "qemu-system-" & QEMU_ARCH & "w.exe"
FW_ARCH = UCase(UEFI_EXT)
FW_DIR = "https://efi.akeo.ie/" & FW_BASE & "/"
FW_ZIP = FW_BASE & "-" & FW_ARCH & ".zip"
FW_FILE = FW_BASE & "_" & FW_ARCH & ".fd"
FW_URL = FW_DIR & FW_ZIP
' Globals
Set fso = CreateObject("Scripting.FileSystemObject")
Set shell = CreateObject("WScript.Shell")
' Download a file from FTP
Sub DownloadFtp(Server, Path)
Set file = fso.CreateTextFile("ftp.txt", True)
Call file.Write("open " & Server & vbCrLf &_
"anonymous" & vbCrLf & "user" & vbCrLf & "bin" & vbCrLf &_
"get " & Path & vbCrLf & "bye" & vbCrLf)
Call file.Close()
Call shell.Run("%comspec% /c ftp -s:ftp.txt > NUL", 0, True)
Call fso.DeleteFile("ftp.txt")
End Sub
' Download a file from HTTP
Sub DownloadHttp(Url, File)
Const BINARY = 1
Const OVERWRITE = 2
Set xHttp = createobject("Microsoft.XMLHTTP")
Set bStrm = createobject("Adodb.Stream")
Call xHttp.Open("GET", Url, False)
If NO_CACHE = True Then
Call xHttp.SetRequestHeader("If-None-Match", "some-random-string")
Call xHttp.SetRequestHeader("Cache-Control", "no-cache,max-age=0")
Call xHttp.SetRequestHeader("Pragma", "no-cache")
End If
Call xHttp.Send()
If Not xHttp.Status = 200 Then
Call WScript.Echo("Unable to access file - Error " & xHttp.Status)
Call WScript.Quit(1)
End If
With bStrm
.type = BINARY
.open
.write xHttp.responseBody
.savetofile File, OVERWRITE
End With
End Sub
' Unzip a specific file from an archive
Sub Unzip(Archive, File)
Const NOCONFIRMATION = &H10&
Const NOERRORUI = &H400&
Const SIMPLEPROGRESS = &H100&
unzipFlags = NOCONFIRMATION + NOERRORUI + SIMPLEPROGRESS
Set objShell = CreateObject("Shell.Application")
Set objSource = objShell.NameSpace(fso.GetAbsolutePathName(Archive)).Items()
Set objTarget = objShell.NameSpace(fso.GetAbsolutePathName("."))
' Only extract the file we are interested in
For i = 0 To objSource.Count - 1
If objSource.Item(i).Name = File Then
Call objTarget.CopyHere(objSource.Item(i), unzipFlags)
End If
Next
End Sub
' Check that QEMU is available
If Not fso.FileExists(QEMU_PATH & QEMU_EXE) Then
Call WScript.Echo("'" & QEMU_PATH & QEMU_EXE & "' was not found." & vbCrLf &_
"Please make sure QEMU is installed or edit the path in '.msvc\debug.vbs'.")
Call WScript.Quit(1)
End If
' Fetch the UEFI firmware and unzip it
If Not fso.FileExists(FW_FILE) Then
Call WScript.Echo("The UEFI firmware file, needed for QEMU, " &_
"will be downloaded from: " & FW_URL & vbCrLf & vbCrLf &_
"Note: Unless you delete the file, this should only happen once.")
Call DownloadHttp(FW_URL, FW_ZIP)
End If
If Not fso.FileExists(FW_ZIP) And Not fso.FileExists(FW_FILE) Then
Call WScript.Echo("There was a problem downloading the QEMU UEFI firmware.")
Call WScript.Quit(1)
End If
If fso.FileExists(FW_ZIP) Then
Call Unzip(FW_ZIP, FW_BASE & ".fd")
Call fso.MoveFile(FW_BASE & ".fd", FW_FILE)
Call fso.DeleteFile(FW_ZIP)
End If
If Not fso.FileExists(FW_FILE) Then
Call WScript.Echo("There was a problem unzipping the QEMU UEFI firmware.")
Call WScript.Quit(1)
End If
' Copy the app file as boot application and run it in QEMU
Call shell.Run("%COMSPEC% /c mkdir ""image\efi\boot""", 0, True)
Call fso.CopyFile(WScript.Arguments(0), "image\efi\boot\" & BOOT_NAME, True)
Call shell.Run("""" & QEMU_PATH & QEMU_EXE & """ " & QEMU_OPTS & " -L . -bios " & FW_FILE & " -hda fat:rw:image", 1, True)