Imports System.IO
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Imports System.IO
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Module Module1
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Module Module1
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Dim strs() As String
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Dim strs() As String
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Dim pass As Integer
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Dim pass As Integer
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Dim lname As String
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Dim lname As String
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Dim address As Int32
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Dim address As Int32
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Public ofs As System.IO.TextWriter
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Public ofs As System.IO.TextWriter
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Public lfs As System.IO.TextWriter
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Public lfs As System.IO.TextWriter
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Public labels As New Collection
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Public labels As New Collection
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Public symbols As New Collection
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Public symbols As New Collection
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Dim iline As String
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Dim iline As String
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Dim lnc As Integer
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Dim lnc As Integer
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Sub Main()
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Sub Main()
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Dim tr As TextReader
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Dim tr As TextReader
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Dim fn As String
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Dim fn As String
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Dim args() As String
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Dim args() As String
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Dim text As String
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Dim text As String
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Dim lines() As String
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Dim lines() As String
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Dim line As String
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Dim line As String
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Dim n As Integer
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Dim n As Integer
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Dim s As String
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Dim s As String
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Dim delimiters As String = " ," & vbTab
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Dim delimiters As String = " ," & vbTab
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Dim p() As Char = delimiters.ToCharArray()
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Dim p() As Char = delimiters.ToCharArray()
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args = System.Environment.GetCommandLineArgs()
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args = System.Environment.GetCommandLineArgs()
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lname = args(1)
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lname = args(1)
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lname = lname.Replace(".s", ".lst")
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lname = lname.Replace(".s", ".lst")
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lname = lname.Replace(".asm", ".lst")
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lname = lname.Replace(".asm", ".lst")
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tr = System.IO.File.OpenText(args(1))
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tr = System.IO.File.OpenText(args(1))
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text = tr.ReadToEnd()
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text = tr.ReadToEnd()
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tr.Close()
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tr.Close()
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text = text.Replace(vbCr, "")
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text = text.Replace(vbCr, "")
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lines = text.Split(vbLf.ToCharArray)
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lines = text.Split(vbLf.ToCharArray)
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For pass = 1 To 2
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For pass = 1 To 2
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If pass = 2 Then
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If pass = 2 Then
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ofs = System.IO.File.CreateText(args(2))
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ofs = System.IO.File.CreateText(args(2))
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lfs = System.IO.File.CreateText(lname)
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lfs = System.IO.File.CreateText(lname)
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End If
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End If
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address = 0
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address = 0
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lnc = 0
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lnc = 0
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For Each iline In lines
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For Each iline In lines
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lnc = lnc + 1
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lnc = lnc + 1
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line = iline
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line = iline
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n = line.IndexOf(";")
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n = line.IndexOf(";")
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If n >= 0 Then
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If n >= 0 Then
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line = line.Substring(0, n - 1)
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line = line.Substring(0, n - 1)
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End If
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End If
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line = line.Trim()
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line = line.Trim()
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line = CompressSpaces(line)
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line = CompressSpaces(line)
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line = line.Replace(", ", ",")
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line = line.Replace(", ", ",")
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If line.Length = 0 Then
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If line.Length = 0 Then
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emitEmptyLine(iline) ' there could be comments on the line
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emitEmptyLine(iline) ' there could be comments on the line
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Else
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Else
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strs = line.Split(p)
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strs = line.Split(p)
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s = strs(0)
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s = strs(0)
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s = s.Trim()
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s = s.Trim()
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If s.EndsWith(":") Then
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If s.EndsWith(":") Then
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ProcessLabel(s)
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ProcessLabel(s)
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Else
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Else
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ProcessOp(s)
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ProcessOp(s)
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End If
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End If
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End If
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End If
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Next
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Next
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Next
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Next
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ofs.Close()
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ofs.Close()
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lfs.Close()
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lfs.Close()
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End Sub
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End Sub
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Function CompressSpaces(ByVal s As String) As String
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Function CompressSpaces(ByVal s As String) As String
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Dim l As Integer
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Dim l As Integer
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Do
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Do
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l = s.Length
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l = s.Length
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s = s.Replace(vbTab, " ")
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s = s.Replace(vbTab, " ")
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s = s.Replace(" ", " ")
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s = s.Replace(" ", " ")
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Loop While s.Length <> l
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Loop While s.Length <> l
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Return s
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Return s
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End Function
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End Function
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Sub ProcessTrap(ByVal n As Integer, ByVal m As Integer)
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Sub ProcessTrap(ByVal n As Integer, ByVal m As Integer)
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Dim oc As Integer
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Dim oc As Integer
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Dim Cra As Integer
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Dim Cra As Integer
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Cra = GetCrRegister(strs(1))
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Cra = GetCrRegister(strs(1))
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oc = n << 26
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oc = n << 26
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oc = oc Or (Cra << 21)
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oc = oc Or (Cra << 21)
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oc = oc Or (m << 16)
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oc = oc Or (m << 16)
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emit(oc)
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emit(oc)
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End Sub
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End Sub
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Sub ProcessSet(ByVal n As Integer, ByVal m As Integer)
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Sub ProcessSet(ByVal n As Integer, ByVal m As Integer)
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Dim oc As Integer
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Dim oc As Integer
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Dim Cra As Integer
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Dim Cra As Integer
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Dim Rt As Integer
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Dim Rt As Integer
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Cra = GetCrRegister(strs(1))
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Cra = GetCrRegister(strs(1))
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Rt = GetRegister(strs(2))
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Rt = GetRegister(strs(2))
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oc = n << 26
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oc = n << 26
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oc = oc Or (Cra << 21)
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oc = oc Or (Cra << 21)
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oc = oc Or (m << 16)
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oc = oc Or (m << 16)
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oc = oc Or (Rt << 11)
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oc = oc Or (Rt << 11)
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emit(oc)
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emit(oc)
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End Sub
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End Sub
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Sub ProcessBranch(ByVal oc As Integer, ByVal func As Integer)
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Sub ProcessBranch(ByVal oc As Integer, ByVal func As Integer)
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Dim opcode As Integer
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Dim opcode As Integer
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Dim ra As Int64
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Dim ra As Int64
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Dim rb As Int64
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Dim rb As Int64
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Dim imm As Int64
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Dim imm As Int64
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Dim disp As Int64
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Dim disp As Int64
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Dim L As Label
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Dim L As Label
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Dim P As LabelPatch
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Dim P As LabelPatch
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ra = GetCrRegister(strs(1))
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ra = GetCrRegister(strs(1))
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strs(2) = strs(2).Trim
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strs(2) = strs(2).Trim
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Try
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Try
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L = labels.Item(strs(2))
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L = labels.Item(strs(2))
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Catch
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Catch
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L = Nothing
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L = Nothing
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End Try
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End Try
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If L Is Nothing Then
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If L Is Nothing Then
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L = New Label
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L = New Label
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L.name = strs(2)
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L.name = strs(2)
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L.address = -1
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L.address = -1
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L.slot = -1
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L.slot = -1
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L.defined = False
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L.defined = False
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labels.Add(L, L.name)
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labels.Add(L, L.name)
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End If
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End If
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If Not L.defined Then
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If Not L.defined Then
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P = New LabelPatch
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P = New LabelPatch
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P.type = "B"
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P.type = "B"
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P.address = address
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P.address = address
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L.PatchAddresses.Add(P)
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L.PatchAddresses.Add(P)
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End If
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End If
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'If slot = 2 Then
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'If slot = 2 Then
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' imm = ((L.address - address - 16) + (L.slot << 2)) >> 2
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' imm = ((L.address - address - 16) + (L.slot << 2)) >> 2
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'Else
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'Else
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disp = L.address - (address + 4)
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disp = L.address - (address + 4)
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'End If
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'End If
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'imm = (L.address + (L.slot << 2)) >> 2
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'imm = (L.address + (L.slot << 2)) >> 2
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opcode = oc << 26
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opcode = oc << 26
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opcode = opcode Or (ra << 21)
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opcode = opcode Or (ra << 21)
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opcode = opcode Or (func << 16)
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opcode = opcode Or (func << 16)
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opcode = opcode Or (disp And &HFFFF)
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opcode = opcode Or (disp And &HFFFF)
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emit(opcode)
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emit(opcode)
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End Sub
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End Sub
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Sub ProcessRRop(ByVal n As Integer, ByVal m As Integer)
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Sub ProcessRRop(ByVal n As Integer, ByVal m As Integer, ByVal rc As Boolean)
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Dim oc As Integer
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Dim oc As Integer
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Dim Rt As Integer
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Dim Rt As Integer
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Dim Ra As Integer
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Dim Ra As Integer
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Dim Rb As Integer
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Dim Rb As Integer
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Rt = GetRegister(strs(1))
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Rt = GetRegister(strs(1))
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Ra = GetRegister(strs(2))
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Ra = GetRegister(strs(2))
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Rb = GetRegister(strs(3))
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Rb = GetRegister(strs(3))
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oc = n << 26
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oc = n << 26
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oc = oc Or (Ra << 21)
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oc = oc Or (Rb << 16)
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oc = oc Or (Rt << 11)
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oc = oc Or m
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If rc Then oc = oc Or 64
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emit(oc)
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End Sub
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Sub ProcessCRRop(ByVal n As Integer, ByVal m As Integer)
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Dim oc As Integer
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Dim Rt As Integer
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Dim Ra As Integer
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Dim Rb As Integer
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Rt = GetCrRegister(strs(1))
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Ra = GetCrRegister(strs(2))
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Rb = GetCrRegister(strs(3))
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oc = n << 26
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oc = oc Or Ra << 21
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oc = oc Or Ra << 21
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oc = oc Or Rb << 16
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oc = oc Or Rb << 16
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oc = oc Or Rt << 11
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oc = oc Or Rt << 11
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oc = oc Or m
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oc = oc Or (m << 1)
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emit(oc)
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emit(oc)
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End Sub
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End Sub
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Sub ProcessCmpOp(ByVal n As Integer, ByVal m As Integer)
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Sub ProcessCmpOp(ByVal n As Integer, ByVal m As Integer)
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Dim oc As Integer
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Dim oc As Integer
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Dim CRt As Integer
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Dim CRt As Integer
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Dim Ra As Integer
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Dim Ra As Integer
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Dim Rb As Integer
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Dim Rb As Integer
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CRt = GetCrRegister(strs(1))
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CRt = GetCrRegister(strs(1))
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Ra = GetRegister(strs(2))
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Ra = GetRegister(strs(2))
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Rb = GetRegister(strs(3))
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Rb = GetRegister(strs(3))
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oc = n << 26
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oc = n << 26
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oc = oc Or (Ra << 21)
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oc = oc Or (Ra << 21)
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oc = oc Or (Rb << 16)
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oc = oc Or (Rb << 16)
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oc = oc Or (CRt << 11)
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oc = oc Or (CRt << 13)
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oc = oc Or m
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oc = oc Or m
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emit(oc)
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emit(oc)
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End Sub
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End Sub
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Sub ProcessCmpiOp(ByVal n As Integer)
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Sub ProcessCmpiOp(ByVal n As Integer)
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Dim oc As Integer
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Dim oc As Integer
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Dim CRt As Integer
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Dim CRt As Integer
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Dim Ra As Integer
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Dim Ra As Integer
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Dim imm As Integer
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Dim imm As Integer
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CRt = GetCrRegister(strs(1))
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CRt = GetCrRegister(strs(1))
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Ra = GetRegister(strs(2))
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Ra = GetRegister(strs(2))
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imm = GetImmediate(strs(3))
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imm = GetImmediate(strs(3))
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oc = n << 26
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oc = n << 26
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oc = oc Or (Ra << 21)
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oc = oc Or (Ra << 21)
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oc = oc Or (CRt << 16)
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oc = oc Or (CRt << 18)
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If imm < -32767 Or imm > 32767 Then
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If imm < -32767 Or imm > 32767 Then
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oc = oc Or &H8000
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oc = oc Or &H8000
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emit(oc)
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emit(oc)
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emit1(imm, True)
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emit1(imm, True)
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Else
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Else
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oc = oc Or (imm And &HFFFF)
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oc = oc Or (imm And &HFFFF)
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emit(oc)
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emit(oc)
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End If
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End If
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End Sub
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End Sub
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Sub ProcessLdi(ByVal n As Integer)
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Sub ProcessLdi(ByVal n As Integer)
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Dim oc As Integer
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Dim oc As Integer
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Dim Rt As Integer
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Dim Rt As Integer
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Dim Ra As Integer
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Dim Ra As Integer
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Dim imm As Integer
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Dim imm As Integer
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Rt = GetRegister(strs(1))
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Rt = GetRegister(strs(1))
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Ra = 0
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Ra = 0
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imm = GetImmediate(strs(2))
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imm = GetImmediate(strs(2))
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oc = n << 26
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oc = n << 26
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oc = oc Or Ra << 21
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oc = oc Or Ra << 21
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oc = oc Or Rt << 16
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oc = oc Or Rt << 16
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If imm < -32767 Or imm > 32767 Then
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If imm < -32767 Or imm > 32767 Then
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oc = oc Or &H8000
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oc = oc Or &H8000
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emit(oc)
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emit(oc)
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emit1(imm, True)
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emit1(imm, True)
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Else
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Else
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oc = oc Or (imm And &HFFFF)
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oc = oc Or (imm And &HFFFF)
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emit(oc)
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emit(oc)
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End If
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End If
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End Sub
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End Sub
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Sub ProcessExec()
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Dim oc As Integer
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Dim Ra As Integer
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Ra = GetRegister(strs(1))
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oc = 1 << 26
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oc = oc Or (Ra << 21)
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oc = oc Or 63
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emit(oc)
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End Sub
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Sub ProcessOri(ByVal n As Integer)
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Sub ProcessOri(ByVal n As Integer)
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Dim oc As Integer
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Dim oc As Integer
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Dim Rt As Integer
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Dim Rt As Integer
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Dim Ra As Integer
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Dim Ra As Integer
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Dim imm As Integer
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Dim imm As Integer
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If strs(1).ToLower = "cr" Then
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imm = GetImmediate(strs(2))
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oc = 19 << 26
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Select Case (strs(0))
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Case "andi"
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oc = oc Or (8 << 16)
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Case "ori"
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oc = oc Or (9 << 16)
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Case "eori"
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oc = oc Or (10 << 16)
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End Select
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If imm < -32767 Or imm > 32767 Then
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oc = oc Or &H8000
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emit(oc)
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emit1(imm, True)
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Else
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oc = oc Or (imm And &HFFFF)
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emit(oc)
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End If
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Return
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End If
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Rt = GetRegister(strs(1))
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Rt = GetRegister(strs(1))
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Ra = GetRegister(strs(2))
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Ra = GetRegister(strs(2))
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imm = GetImmediate(strs(3))
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imm = GetImmediate(strs(3))
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oc = n << 26
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oc = n << 26
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oc = oc Or Ra << 21
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oc = oc Or Ra << 21
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oc = oc Or Rt << 16
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oc = oc Or Rt << 16
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If imm < -32767 Or imm > 32767 Then
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If imm < -32767 Or imm > 32767 Then
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oc = oc Or &H8000
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oc = oc Or &H8000
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emit(oc)
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emit(oc)
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emit1(imm, True)
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emit1(imm, True)
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Else
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Else
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oc = oc Or (imm And &HFFFF)
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oc = oc Or (imm And &HFFFF)
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emit(oc)
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emit(oc)
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End If
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End If
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End Sub
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End Sub
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Sub ParseAm(ByRef offset As Integer, ByRef reg1 As Integer, ByRef reg2 As Integer)
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Sub ParseAm(ByRef offset As Integer, ByRef reg1 As Integer, ByRef reg2 As Integer)
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Dim s() As String
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Dim s() As String
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Dim t() As String
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Dim t() As String
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offset = 0
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offset = 0
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reg1 = 0
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reg1 = 0
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reg2 = 0
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reg2 = 0
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s = strs(2).Split("(".ToCharArray)
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s = strs(2).Split("(".ToCharArray)
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If s(0).Length > 0 Then
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If s(0).Length > 0 Then
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offset = GetImmediate(s(0))
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offset = GetImmediate(s(0))
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Else
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Else
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offset = 0
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offset = 0
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End If
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End If
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If s.Length > 1 Then
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If s.Length > 1 Then
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s(1) = s(1).TrimEnd(")".ToCharArray)
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s(1) = s(1).TrimEnd(")".ToCharArray)
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t = s(1).Split("+".ToCharArray)
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t = s(1).Split("+".ToCharArray)
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reg1 = GetRegister(t(0))
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reg1 = GetRegister(t(0))
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If t.Length = 2 Then
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If t.Length = 2 Then
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reg2 = GetRegister(t(1))
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reg2 = GetRegister(t(1))
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Else
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Else
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reg2 = 0
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reg2 = 0
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End If
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End If
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End If
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End If
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End Sub
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End Sub
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Sub ProcessLabel(ByVal s As String)
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Sub ProcessLabel(ByVal s As String)
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Dim L As Label
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Dim L As Label
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Dim M As Label
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Dim M As Label
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s = s.TrimEnd(":")
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s = s.TrimEnd(":")
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L = New Label
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L = New Label
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L.name = s
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L.name = s
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L.address = address
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L.address = address
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L.defined = True
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L.defined = True
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If labels.Count > 0 Then
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If labels.Count > 0 Then
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Try
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Try
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M = labels.Item(s)
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M = labels.Item(s)
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Catch
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Catch
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M = Nothing
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M = Nothing
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End Try
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End Try
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Else
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Else
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M = Nothing
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M = Nothing
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End If
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End If
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If M Is Nothing Then
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If M Is Nothing Then
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labels.Add(L, L.name)
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labels.Add(L, L.name)
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Else
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Else
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M.defined = True
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M.defined = True
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M.address = L.address
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M.address = L.address
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M.slot = L.slot
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M.slot = L.slot
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End If
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End If
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emitLabel(L.name)
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emitLabel(L.name)
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End Sub
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End Sub
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Sub ProcessEquate()
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Sub ProcessEquate()
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Dim sym As Symbol
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Dim sym As Symbol
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Dim sym2 As Symbol
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Dim sym2 As Symbol
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|
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If strs(1).ToUpper = "EQU" Then
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If strs(1).ToUpper = "EQU" Then
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sym = New Symbol
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sym = New Symbol
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sym.name = strs(0)
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sym.name = strs(0)
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sym.value = GetImmediate(strs(2))
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sym.value = GetImmediate(strs(2))
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If symbols Is Nothing Then
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If symbols Is Nothing Then
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symbols = New Collection
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symbols = New Collection
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Else
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Else
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Try
|
Try
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sym2 = symbols.Item(sym.name)
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sym2 = symbols.Item(sym.name)
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Catch
|
Catch
|
sym2 = Nothing
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sym2 = Nothing
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End Try
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End Try
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End If
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End If
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If sym2 Is Nothing Then
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If sym2 Is Nothing Then
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symbols.Add(sym, sym.name)
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symbols.Add(sym, sym.name)
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End If
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End If
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emitEmptyLine(iline)
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emitEmptyLine(iline)
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End If
|
End If
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End Sub
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End Sub
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Sub ProcessMov()
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Dim oc As Integer
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Dim Ra As Integer
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Dim Rt As Integer
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Dim Crt As Integer
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Dim Cra As Integer
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|
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oc = 1 << 26
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Rt = GetRegister(strs(1))
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Ra = GetRegister(strs(2))
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Crt = GetCrRegister(strs(1))
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Cra = GetCrRegister(strs(2))
|
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If Crt <> -1 And Cra <> -1 Then
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oc = oc Or (Crt << 16)
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oc = oc Or (Cra << 21)
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oc = oc Or 48
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emit(oc)
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Return
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End If
|
|
If Crt <> -1 And Ra <> -1 Then
|
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oc = oc Or (Crt << 16)
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oc = oc Or (Ra << 21)
|
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oc = oc Or 50
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emit(oc)
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Return
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End If
|
|
If Rt <> -1 And Cra <> -1 Then
|
|
oc = oc Or (Cra << 21)
|
|
oc = oc Or (Rt << 16)
|
|
oc = oc Or 49
|
|
emit(oc)
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Return
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End If
|
|
If Rt <> -1 Then
|
|
Select Case (strs(2).ToLower)
|
|
Case "usp"
|
|
oc = oc Or (Rt << 16)
|
|
oc = oc Or 33
|
|
emit(oc)
|
|
Return
|
|
Case "im"
|
|
oc = oc Or (Rt << 16)
|
|
oc = oc Or 54
|
|
emit(oc)
|
|
Return
|
|
End Select
|
|
Else
|
|
Select Case (strs(1))
|
|
' MOV USP,Rn
|
|
Case "usp"
|
|
oc = 1 << 26
|
|
oc = oc Or (Ra << 21)
|
|
oc = oc Or 32
|
|
emit(oc)
|
|
Return
|
|
' MOV IM,Rn
|
|
Case "im"
|
|
oc = 1 << 26
|
|
oc = oc Or (Ra << 21)
|
|
oc = oc Or 53
|
|
emit(oc)
|
|
Return
|
|
End Select
|
|
End If
|
|
End Sub
|
|
|
Sub ProcessOrg()
|
Sub ProcessOrg()
|
Dim imm As Int32
|
Dim imm As Int32
|
imm = GetImmediate(strs(1))
|
imm = GetImmediate(strs(1))
|
address = imm
|
address = imm
|
emitLabel("")
|
emitLabel("")
|
End Sub
|
End Sub
|
|
|
|
' PUSH R1/R2/R3/R4/R5
|
|
'
|
Sub ProcessPush(ByVal n As Integer)
|
Sub ProcessPush(ByVal n As Integer)
|
Dim oc As Integer
|
Dim oc As Integer
|
Dim rs() As String
|
Dim rs() As String
|
Dim regs(5) As Integer
|
Dim regs(5) As Integer
|
Dim c As Integer
|
Dim c As Integer
|
|
|
rs = strs(1).Split("/".ToCharArray)
|
rs = strs(1).Split("/".ToCharArray)
|
For c = 1 To 5
|
For c = 1 To 5
|
If rs.Length < c Then
|
If rs.Length < c Then
|
regs(c - 1) = 0
|
regs(c - 1) = 0
|
Else
|
Else
|
regs(c - 1) = GetRegister(rs(c - 1))
|
regs(c - 1) = GetRegister(rs(c - 1))
|
End If
|
End If
|
Next
|
Next
|
oc = n << 26
|
oc = n << 26
|
oc = oc Or regs(0) << 21
|
oc = oc Or regs(0) << 21
|
oc = oc Or regs(1) << 16
|
oc = oc Or regs(1) << 16
|
oc = oc Or regs(2) << 11
|
oc = oc Or regs(2) << 11
|
oc = oc Or regs(3) << 6
|
oc = oc Or regs(3) << 6
|
oc = oc Or regs(4) << 1
|
oc = oc Or regs(4) << 1
|
emit(oc)
|
emit(oc)
|
End Sub
|
End Sub
|
|
|
|
' JSR SomeSubroutine
|
|
' JSR (R1+R2)
|
|
'
|
Sub ProcessJsr(ByVal n As Integer)
|
Sub ProcessJsr(ByVal n As Integer)
|
Dim oc As Integer
|
Dim oc As Integer
|
Dim adr As Integer
|
Dim adr As Integer
|
|
Dim Ra As Integer
|
|
Dim Rb As Integer
|
|
Dim s() As String
|
|
Dim t() As String
|
|
Dim m As Integer
|
|
|
|
Ra = 0
|
|
Rb = 0
|
|
m = strs(1).IndexOf("(")
|
|
If m >= 0 Then
|
|
s = strs(1).Split("(".ToCharArray)
|
|
t = s(1).Split("+".ToCharArray)
|
|
Ra = GetRegister(t(0))
|
|
If t.Length > 1 Then
|
|
Rb = GetRegister(t(1))
|
|
End If
|
|
oc = 2 << 26
|
|
oc = oc Or (Ra << 21)
|
|
oc = oc Or (Rb << 16)
|
|
oc = oc Or n
|
|
emit(oc)
|
|
Else
|
adr = GetImmediate(strs(1))
|
adr = GetImmediate(strs(1))
|
oc = n << 26
|
oc = n << 26
|
oc = oc Or (adr And &H3FFFFFF)
|
oc = oc Or (adr And &H3FFFFFF)
|
emit(oc)
|
emit(oc)
|
|
End If
|
End Sub
|
End Sub
|
|
|
Sub ProcessMemop(ByVal n As Integer, ByVal m As Integer)
|
Sub ProcessMemop(ByVal n As Integer, ByVal m As Integer)
|
Dim oc As Integer
|
Dim oc As Integer
|
Dim Ra As Integer
|
Dim Ra As Integer
|
Dim Rb As Integer
|
Dim Rb As Integer
|
Dim Rt As Integer
|
Dim Rt As Integer
|
Dim offs As Integer
|
Dim offs As Integer
|
|
|
Rt = GetRegister(strs(1))
|
Rt = GetRegister(strs(1))
|
ParseAm(offs, Ra, Rb)
|
ParseAm(offs, Ra, Rb)
|
If Ra <> 0 And Rb <> 0 Then
|
If Ra <> 0 And Rb <> 0 Then
|
oc = n << 26
|
oc = n << 26
|
oc = oc Or (Ra << 21)
|
oc = oc Or (Ra << 21)
|
oc = oc Or (Rb << 16)
|
oc = oc Or (Rb << 16)
|
oc = oc Or m
|
oc = oc Or m
|
emit(oc)
|
emit(oc)
|
Else
|
Else
|
oc = n << 26
|
oc = n << 26
|
oc = oc Or (Ra << 21)
|
oc = oc Or (Ra << 21)
|
oc = oc Or (Rt << 16)
|
oc = oc Or (Rt << 16)
|
If offs < -32767 Or offs > 32767 Then
|
If offs < -32767 Or offs > 32767 Then
|
oc = oc Or &H8000
|
oc = oc Or &H8000
|
emit(oc)
|
emit(oc)
|
emit1(offs, True)
|
emit1(offs, True)
|
Else
|
Else
|
oc = oc Or (offs And &HFFFF)
|
oc = oc Or (offs And &HFFFF)
|
emit(oc)
|
emit(oc)
|
End If
|
End If
|
End If
|
End If
|
End Sub
|
End Sub
|
|
|
Sub ProcessLink(ByVal n As Integer)
|
Sub ProcessLink(ByVal n As Integer)
|
Dim oc As Integer
|
Dim oc As Integer
|
Dim Ra As Integer
|
Dim Ra As Integer
|
Dim imm As Integer
|
Dim imm As Integer
|
|
|
Ra = GetRegister(strs(1))
|
Ra = GetRegister(strs(1))
|
imm = GetImmediate(strs(2))
|
imm = GetImmediate(strs(2))
|
oc = n << 26
|
oc = n << 26
|
oc = oc Or (Ra << 21)
|
oc = oc Or (Ra << 21)
|
oc = oc Or (Ra << 16)
|
oc = oc Or (Ra << 16)
|
oc = oc Or (imm And &HFFFF)
|
oc = oc Or (imm And &HFFFF)
|
emit(oc)
|
emit(oc)
|
End Sub
|
End Sub
|
|
|
Sub ProcessUnlk(ByVal n As Integer, ByVal m As Integer)
|
Sub ProcessUnlk(ByVal n As Integer, ByVal m As Integer)
|
Dim oc As Integer
|
Dim oc As Integer
|
Dim Ra As Integer
|
Dim Ra As Integer
|
|
|
Ra = GetRegister(strs(1))
|
Ra = GetRegister(strs(1))
|
oc = n << 26
|
oc = n << 26
|
oc = oc Or m
|
oc = oc Or m
|
oc = oc Or (Ra << 21)
|
oc = oc Or (Ra << 21)
|
oc = oc Or (Ra << 16)
|
oc = oc Or (Ra << 16)
|
emit(oc)
|
emit(oc)
|
End Sub
|
End Sub
|
|
|
Sub ProcessRts(ByVal n As Integer, ByVal m As Integer)
|
Sub ProcessRts(ByVal n As Integer, ByVal m As Integer)
|
Dim oc As Integer
|
Dim oc As Integer
|
Dim offs As Integer
|
Dim offs As Integer
|
Dim imm As Integer
|
Dim imm As Integer
|
Dim k As Integer
|
Dim k As Integer
|
|
|
k = 1
|
k = 1
|
offs = 0
|
offs = 0
|
imm = 0
|
imm = 0
|
If strs.Length = 2 Then
|
If strs.Length = 2 Then
|
offs = GetImmediate(strs(1))
|
offs = GetImmediate(strs(1))
|
k = k + 1
|
k = k + 1
|
End If
|
End If
|
If strs.Length > 1 Then
|
If strs.Length > 1 Then
|
imm = GetImmediate(strs(k))
|
imm = GetImmediate(strs(k))
|
End If
|
End If
|
oc = n << 26
|
oc = n << 26
|
oc = oc Or m
|
oc = oc Or m
|
oc = oc Or (offs << 22)
|
oc = oc Or (offs << 22)
|
oc = oc Or ((imm And &HFFFF) << 6)
|
oc = oc Or ((imm And &HFFFF) << 6)
|
emit(oc)
|
emit(oc)
|
End Sub
|
End Sub
|
|
|
Sub ProcessStop(ByVal n As Integer, ByVal m As Integer)
|
Sub ProcessStop(ByVal n As Integer, ByVal m As Integer)
|
Dim oc As Integer
|
Dim oc As Integer
|
|
|
oc = n << 26
|
oc = n << 26
|
oc = n Or m
|
oc = n Or m
|
emit(oc)
|
emit(oc)
|
End Sub
|
End Sub
|
|
|
Sub ProcessOp(ByVal s As String)
|
Sub ProcessOp(ByVal s As String)
|
Select Case (s.ToLower)
|
Select Case (s.ToLower)
|
Case "org"
|
Case "org"
|
ProcessOrg()
|
ProcessOrg()
|
Case "add"
|
Case "add"
|
ProcessRRop(2, 4)
|
ProcessRRop(2, 4, False)
|
|
Case "add."
|
|
ProcessRRop(2, 4, True)
|
Case "sub"
|
Case "sub"
|
ProcessRRop(2, 5)
|
ProcessRRop(2, 5, False)
|
|
Case "sub."
|
|
ProcessRRop(2, 5, True)
|
Case "cmp"
|
Case "cmp"
|
ProcessCmpOp(2, 6)
|
ProcessCmpOp(2, 6)
|
Case "and"
|
Case "and"
|
ProcessRRop(2, 8)
|
ProcessRRop(2, 8, False)
|
|
Case "and."
|
|
ProcessRRop(2, 8, True)
|
Case "or"
|
Case "or"
|
ProcessRRop(2, 9)
|
ProcessRRop(2, 9, False)
|
|
Case "or."
|
|
ProcessRRop(2, 9, True)
|
Case "eor"
|
Case "eor"
|
ProcessRRop(2, 10)
|
ProcessRRop(2, 10, False)
|
|
Case "eor."
|
|
ProcessRRop(2, 10, True)
|
Case "nand"
|
Case "nand"
|
ProcessRRop(2, 12)
|
ProcessRRop(2, 12, False)
|
|
Case "nand."
|
|
ProcessRRop(2, 12, True)
|
Case "nor"
|
Case "nor"
|
ProcessRRop(2, 13)
|
ProcessRRop(2, 13, False)
|
|
Case "nor."
|
|
ProcessRRop(2, 13, True)
|
Case "enor"
|
Case "enor"
|
ProcessRRop(2, 14)
|
ProcessRRop(2, 14, False)
|
|
Case "enor."
|
|
ProcessRRop(2, 14, True)
|
|
Case "cror"
|
|
ProcessCRRop(19, 449)
|
|
Case "crorc"
|
|
ProcessCRRop(19, 417)
|
|
Case "crand"
|
|
ProcessCRRop(19, 257)
|
|
Case "crandc"
|
|
ProcessCRRop(19, 129)
|
|
Case "crxor"
|
|
ProcessCRRop(19, 193)
|
|
Case "crnor"
|
|
ProcessCRRop(19, 33)
|
|
Case "crnand"
|
|
ProcessCRRop(19, 225)
|
|
Case "crxnor"
|
|
ProcessCRRop(19, 289)
|
Case "shl"
|
Case "shl"
|
ProcessRRop(2, 16)
|
ProcessRRop(2, 16, False)
|
|
Case "shl."
|
|
ProcessRRop(2, 16, True)
|
Case "shr"
|
Case "shr"
|
ProcessRRop(2, 17)
|
ProcessRRop(2, 17, False)
|
|
Case "shr."
|
|
ProcessRRop(2, 17, True)
|
Case "rol"
|
Case "rol"
|
ProcessRRop(2, 18)
|
ProcessRRop(2, 18, False)
|
|
Case "rol."
|
|
ProcessRRop(2, 18, True)
|
Case "ror"
|
Case "ror"
|
ProcessRRop(2, 19)
|
ProcessRRop(2, 19, False)
|
|
Case "ror."
|
|
ProcessRRop(2, 19, True)
|
|
Case "min"
|
|
ProcessRRop(2, 23, False)
|
|
Case "min."
|
|
ProcessRRop(2, 23, True)
|
|
Case "max"
|
|
ProcessRRop(2, 24, False)
|
|
Case "max."
|
|
ProcessRRop(2, 24, True)
|
Case "ldi"
|
Case "ldi"
|
ProcessLdi(9)
|
ProcessLdi(9)
|
Case "addi"
|
Case "addi"
|
ProcessOri(4)
|
ProcessOri(4)
|
Case "subi"
|
Case "subi"
|
ProcessOri(5)
|
ProcessOri(5)
|
Case "cmpi"
|
Case "cmpi"
|
ProcessCmpiOp(6)
|
ProcessCmpiOp(6)
|
Case "andi"
|
Case "andi"
|
ProcessOri(8)
|
ProcessOri(8)
|
Case "ori"
|
Case "ori"
|
ProcessOri(9)
|
ProcessOri(9)
|
Case "eori"
|
Case "eori"
|
ProcessOri(10)
|
ProcessOri(10)
|
Case "bra"
|
Case "bra"
|
ProcessBranch(16, 0)
|
ProcessBranch(16, 0)
|
Case "bhi"
|
Case "bhi"
|
ProcessBranch(16, 2)
|
ProcessBranch(16, 2)
|
Case "bls"
|
Case "bls"
|
ProcessBranch(16, 3)
|
ProcessBranch(16, 3)
|
Case "bhs"
|
Case "bhs"
|
ProcessBranch(16, 4)
|
ProcessBranch(16, 4)
|
Case "blo"
|
Case "blo"
|
ProcessBranch(16, 5)
|
ProcessBranch(16, 5)
|
Case "bne"
|
Case "bne"
|
ProcessBranch(16, 6)
|
ProcessBranch(16, 6)
|
Case "beq"
|
Case "beq"
|
ProcessBranch(16, 7)
|
ProcessBranch(16, 7)
|
Case "bvc"
|
Case "bvc"
|
ProcessBranch(16, 8)
|
ProcessBranch(16, 8)
|
Case "bvs"
|
Case "bvs"
|
ProcessBranch(16, 9)
|
ProcessBranch(16, 9)
|
Case "bpl"
|
Case "bpl"
|
ProcessBranch(16, 10)
|
ProcessBranch(16, 10)
|
Case "bmi"
|
Case "bmi"
|
ProcessBranch(16, 11)
|
ProcessBranch(16, 11)
|
Case "bge"
|
Case "bge"
|
ProcessBranch(16, 12)
|
ProcessBranch(16, 12)
|
Case "blt"
|
Case "blt"
|
ProcessBranch(16, 13)
|
ProcessBranch(16, 13)
|
Case "bgt"
|
Case "bgt"
|
ProcessBranch(16, 14)
|
ProcessBranch(16, 14)
|
Case "ble"
|
Case "ble"
|
ProcessBranch(16, 15)
|
ProcessBranch(16, 15)
|
Case "trap"
|
Case "trap"
|
ProcessTrap(17, 0)
|
ProcessTrap(17, 0)
|
Case "thi"
|
Case "thi"
|
ProcessTrap(17, 2)
|
ProcessTrap(17, 2)
|
Case "tls"
|
Case "tls"
|
ProcessTrap(17, 3)
|
ProcessTrap(17, 3)
|
Case "ths"
|
Case "ths"
|
ProcessTrap(17, 4)
|
ProcessTrap(17, 4)
|
Case "tlo"
|
Case "tlo"
|
ProcessTrap(17, 5)
|
ProcessTrap(17, 5)
|
Case "tne"
|
Case "tne"
|
ProcessTrap(17, 6)
|
ProcessTrap(17, 6)
|
Case "teq"
|
Case "teq"
|
ProcessTrap(17, 7)
|
ProcessTrap(17, 7)
|
Case "tvc"
|
Case "tvc"
|
ProcessTrap(17, 8)
|
ProcessTrap(17, 8)
|
Case "tvs"
|
Case "tvs"
|
ProcessTrap(17, 9)
|
ProcessTrap(17, 9)
|
Case "tpl"
|
Case "tpl"
|
ProcessTrap(17, 10)
|
ProcessTrap(17, 10)
|
Case "tmi"
|
Case "tmi"
|
ProcessTrap(17, 11)
|
ProcessTrap(17, 11)
|
Case "tge"
|
Case "tge"
|
ProcessTrap(17, 12)
|
ProcessTrap(17, 12)
|
Case "tlt"
|
Case "tlt"
|
ProcessTrap(17, 13)
|
ProcessTrap(17, 13)
|
Case "tgt"
|
Case "tgt"
|
ProcessTrap(17, 14)
|
ProcessTrap(17, 14)
|
Case "tle"
|
Case "tle"
|
ProcessTrap(17, 15)
|
ProcessTrap(17, 15)
|
Case "set"
|
Case "set"
|
ProcessSet(18, 0)
|
ProcessSet(18, 0)
|
Case "shi"
|
Case "shi"
|
ProcessSet(18, 2)
|
ProcessSet(18, 2)
|
Case "sls"
|
Case "sls"
|
ProcessSet(18, 3)
|
ProcessSet(18, 3)
|
Case "shs"
|
Case "shs"
|
ProcessSet(18, 4)
|
ProcessSet(18, 4)
|
Case "slo"
|
Case "slo"
|
ProcessSet(18, 5)
|
ProcessSet(18, 5)
|
Case "sne"
|
Case "sne"
|
ProcessSet(18, 6)
|
ProcessSet(18, 6)
|
Case "seq"
|
Case "seq"
|
ProcessSet(18, 7)
|
ProcessSet(18, 7)
|
Case "svc"
|
Case "svc"
|
ProcessSet(18, 8)
|
ProcessSet(18, 8)
|
Case "svs"
|
Case "svs"
|
ProcessSet(18, 9)
|
ProcessSet(18, 9)
|
Case "spl"
|
Case "spl"
|
ProcessSet(18, 10)
|
ProcessSet(18, 10)
|
Case "smi"
|
Case "smi"
|
ProcessSet(18, 11)
|
ProcessSet(18, 11)
|
Case "sge"
|
Case "sge"
|
ProcessSet(18, 12)
|
ProcessSet(18, 12)
|
Case "slt"
|
Case "slt"
|
ProcessSet(18, 13)
|
ProcessSet(18, 13)
|
Case "sgt"
|
Case "sgt"
|
ProcessSet(18, 14)
|
ProcessSet(18, 14)
|
Case "sle"
|
Case "sle"
|
ProcessSet(18, 15)
|
ProcessSet(18, 15)
|
Case "sw"
|
Case "sw"
|
ProcessMemop(56, 0)
|
ProcessMemop(56, 0)
|
Case "sh"
|
Case "sh"
|
ProcessMemop(57, 0)
|
ProcessMemop(57, 0)
|
Case "sb"
|
Case "sb"
|
ProcessMemop(58, 0)
|
ProcessMemop(58, 0)
|
Case "lw"
|
Case "lw"
|
ProcessMemop(48, 0)
|
ProcessMemop(48, 0)
|
Case "lh"
|
Case "lh"
|
ProcessMemop(49, 0)
|
ProcessMemop(49, 0)
|
Case "lb"
|
Case "lb"
|
ProcessMemop(50, 0)
|
ProcessMemop(50, 0)
|
Case "lhu"
|
Case "lhu"
|
ProcessMemop(51, 0)
|
ProcessMemop(51, 0)
|
Case "lbu"
|
Case "lbu"
|
ProcessMemop(52, 0)
|
ProcessMemop(52, 0)
|
Case "tas"
|
Case "tas"
|
ProcessMemop(46, 0)
|
ProcessMemop(46, 0)
|
Case "swx"
|
Case "swx"
|
ProcessMemop(2, 56)
|
ProcessMemop(2, 56)
|
Case "shx"
|
Case "shx"
|
ProcessMemop(2, 57)
|
ProcessMemop(2, 57)
|
Case "sbx"
|
Case "sbx"
|
ProcessMemop(2, 58)
|
ProcessMemop(2, 58)
|
Case "lwx"
|
Case "lwx"
|
ProcessMemop(2, 48)
|
ProcessMemop(2, 48)
|
Case "lhx"
|
Case "lhx"
|
ProcessMemop(2, 49)
|
ProcessMemop(2, 49)
|
Case "lbx"
|
Case "lbx"
|
ProcessMemop(2, 50)
|
ProcessMemop(2, 50)
|
Case "lhux"
|
Case "lhux"
|
ProcessMemop(2, 51)
|
ProcessMemop(2, 51)
|
Case "lbux"
|
Case "lbux"
|
ProcessMemop(2, 52)
|
ProcessMemop(2, 52)
|
|
Case "jmp"
|
|
ProcessJsr(20)
|
Case "jsr"
|
Case "jsr"
|
ProcessJsr(21)
|
ProcessJsr(21)
|
Case "push"
|
Case "push"
|
ProcessPush(59)
|
ProcessPush(59)
|
Case "pop"
|
Case "pop"
|
ProcessPush(53)
|
ProcessPush(53)
|
Case "link"
|
Case "link"
|
ProcessLink(54)
|
ProcessLink(54)
|
Case "unlk"
|
Case "unlk"
|
ProcessUnlk(1, 24)
|
ProcessUnlk(1, 24)
|
Case "rts"
|
Case "rts"
|
ProcessRts(0, 34)
|
ProcessRts(0, 34)
|
Case "stop"
|
Case "stop"
|
ProcessStop(0, 53)
|
ProcessStop(0, 53)
|
|
Case "mov"
|
|
ProcessMov()
|
|
Case "exec"
|
|
ProcessExec()
|
Case Else
|
Case Else
|
ProcessEquate()
|
ProcessEquate()
|
End Select
|
End Select
|
End Sub
|
End Sub
|
|
|
Sub emitEmptyLine(ByVal ln As String)
|
Sub emitEmptyLine(ByVal ln As String)
|
Dim s As String
|
Dim s As String
|
If pass = 2 Then
|
If pass = 2 Then
|
s = " " & " " & vbTab & " " & vbTab & vbTab & ln
|
s = " " & " " & vbTab & " " & vbTab & vbTab & ln
|
lfs.WriteLine(s)
|
lfs.WriteLine(s)
|
End If
|
End If
|
End Sub
|
End Sub
|
|
|
Sub emitLabel(ByVal lbl As String)
|
Sub emitLabel(ByVal lbl As String)
|
Dim s As String
|
Dim s As String
|
|
|
If pass = 2 Then
|
If pass = 2 Then
|
s = Hex(address).PadLeft(8, "0") & vbTab & " " & vbTab & vbTab & iline
|
s = Hex(address).PadLeft(8, "0") & vbTab & " " & vbTab & vbTab & iline
|
lfs.WriteLine(s)
|
lfs.WriteLine(s)
|
End If
|
End If
|
End Sub
|
End Sub
|
|
|
Function GetRegister(ByVal s As String) As Integer
|
Function GetRegister(ByVal s As String) As Integer
|
Dim r As Int16
|
Dim r As Int16
|
If s.StartsWith("R") Or s.StartsWith("r") Then
|
If s.StartsWith("R") Or s.StartsWith("r") Then
|
s = s.TrimStart("Rr".ToCharArray)
|
s = s.TrimStart("Rr".ToCharArray)
|
Try
|
Try
|
r = Int16.Parse(s)
|
r = Int16.Parse(s)
|
Catch
|
Catch
|
r = -1
|
r = -1
|
End Try
|
End Try
|
Return r
|
Return r
|
Else
|
Else
|
Return -1
|
Return -1
|
End If
|
End If
|
End Function
|
End Function
|
|
|
Function GetCrRegister(ByVal s As String) As Integer
|
Function GetCrRegister(ByVal s As String) As Integer
|
Dim r As Int16
|
Dim r As Int16
|
If s.ToLower.StartsWith("cr") Then
|
If s.ToLower.StartsWith("cr") Then
|
s = s.Substring(2)
|
s = s.Substring(2)
|
Try
|
Try
|
r = Int16.Parse(s)
|
r = Int16.Parse(s)
|
Catch
|
Catch
|
r = -1
|
r = -1
|
End Try
|
End Try
|
Return r
|
Return r
|
Else
|
Else
|
Return -1
|
Return -1
|
End If
|
End If
|
End Function
|
End Function
|
|
|
Function GetImmediate(ByVal s As String) As Int64
|
Function GetImmediate(ByVal s As String) As Int64
|
Dim s1 As String
|
Dim s1 As String
|
Dim s2 As String
|
Dim s2 As String
|
Dim s3 As String
|
Dim s3 As String
|
Dim n As Int64
|
Dim n As Int64
|
Dim q As Integer
|
Dim q As Integer
|
Dim sym As Symbol
|
Dim sym As Symbol
|
Dim L As Label
|
Dim L As Label
|
|
|
s = s.TrimStart("#".ToCharArray)
|
s = s.TrimStart("#".ToCharArray)
|
s = s.Replace("_", "")
|
s = s.Replace("_", "")
|
If s.Length = 0 Then Return 0
|
If s.Length = 0 Then Return 0
|
If s.Chars(0) = "$" Then
|
If s.Chars(0) = "$" Then
|
s1 = "&H" & s.Substring(1)
|
s1 = "&H" & s.Substring(1)
|
n = Val(s1)
|
n = Val(s1)
|
ElseIf s.Chars(0) = "0" Then
|
ElseIf s.Chars(0) = "0" Then
|
If s.Length = 1 Then Return 0
|
If s.Length = 1 Then Return 0
|
If s.Chars(1) = "x" Or s.Chars(1) = "X" Then
|
If s.Chars(1) = "x" Or s.Chars(1) = "X" Then
|
If s.Length >= 18 Then
|
If s.Length >= 18 Then
|
s1 = "&H0000" & s.Substring(2, 6) & "&"
|
s1 = "&H0000" & s.Substring(2, 6) & "&"
|
s2 = "&H0000" & s.Substring(8, 6) & "&"
|
s2 = "&H0000" & s.Substring(8, 6) & "&"
|
s3 = "&H0000" & s.Substring(14) & "&"
|
s3 = "&H0000" & s.Substring(14) & "&"
|
n = Val(s1) << 40
|
n = Val(s1) << 40
|
n = n Or (Val(s2) << 16)
|
n = n Or (Val(s2) << 16)
|
n = n Or Val(s3)
|
n = n Or Val(s3)
|
Else
|
Else
|
s1 = "&H" & s.Substring(2)
|
s1 = "&H" & s.Substring(2)
|
n = Val(s1)
|
n = Val(s1)
|
End If
|
End If
|
End If
|
End If
|
Else
|
Else
|
If s.Chars(0) > "9" Then
|
If s.Chars(0) > "9" Then
|
sym = Nothing
|
sym = Nothing
|
Try
|
Try
|
sym = symbols.Item(s)
|
sym = symbols.Item(s)
|
Catch
|
Catch
|
sym = Nothing
|
sym = Nothing
|
End Try
|
End Try
|
If Not sym Is Nothing Then
|
If Not sym Is Nothing Then
|
n = sym.value
|
n = sym.value
|
Return n
|
Return n
|
End If
|
End If
|
Try
|
Try
|
L = labels.Item(s)
|
L = labels.Item(s)
|
Catch ex As Exception
|
Catch ex As Exception
|
L = Nothing
|
L = Nothing
|
End Try
|
End Try
|
If Not L Is Nothing Then
|
If Not L Is Nothing Then
|
n = L.address
|
n = L.address
|
Return n
|
Return n
|
End If
|
End If
|
End If
|
End If
|
n = Int64.Parse(s)
|
n = Int64.Parse(s)
|
End If
|
End If
|
Return n
|
Return n
|
End Function
|
End Function
|
|
|
Overloads Sub emit(ByVal n As Int32)
|
Overloads Sub emit(ByVal n As Int32)
|
emit1(n, False)
|
emit1(n, False)
|
End Sub
|
End Sub
|
|
|
Sub emit1(ByVal n As Int32, ByVal pfx As Boolean)
|
Sub emit1(ByVal n As Int32, ByVal pfx As Boolean)
|
Dim wdhi As Int64
|
Dim wdhi As Int64
|
Dim wdlo As Int64
|
Dim wdlo As Int64
|
Dim s As String
|
Dim s As String
|
|
|
If pass = 2 Then
|
If pass = 2 Then
|
If pfx Then
|
If pfx Then
|
s = Hex(address).PadLeft(8, "0") & vbTab & Hex(n).PadLeft(8, "0") & vbTab
|
s = Hex(address).PadLeft(8, "0") & vbTab & Hex(n).PadLeft(8, "0") & vbTab
|
Else
|
Else
|
s = Hex(address).PadLeft(8, "0") & vbTab & Hex(n).PadLeft(8, "0") & vbTab & vbTab & iline
|
s = Hex(address).PadLeft(8, "0") & vbTab & Hex(n).PadLeft(8, "0") & vbTab & vbTab & iline
|
End If
|
End If
|
lfs.WriteLine(s)
|
lfs.WriteLine(s)
|
End If
|
End If
|
If pass = 2 Then
|
If pass = 2 Then
|
s = "32'h" & Hex(address) & ":" & vbTab & "romout <= 32'h" & Hex(n).PadLeft(8, "0") & ";"
|
s = "32'h" & Hex(address) & ":" & vbTab & "romout <= 32'h" & Hex(n).PadLeft(8, "0") & ";"
|
ofs.WriteLine(s)
|
ofs.WriteLine(s)
|
End If
|
End If
|
address = address + 4
|
address = address + 4
|
|
|
End Sub
|
End Sub
|
|
|
End Module
|
End Module
|
|
|
