Add support for NEC uPD78 micro-controllers

8-bit micro-controllers with skip-next-if style branching.

Ghidra/Processors/upd78/LICENSE.txt

@@ -0,0 +1,8 @@
+Ghidra software is released under the Apache 2.0 license. In addition,
+there are numerous 3rd party components that each have their
+own license. The license file for each of these licenses can be found
+in the licenses directory in the installation root directory.
+
+The 3rd party files in this module are as follows:
+languages/*  Licensed under Apache 2.0 license by Vesa-Pekka Palmu
+

Ghidra/Processors/upd78/data/build.xml

@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<!--
+  + Compile sleigh languages within this distribution language module via Eclipse or
+  + a command shell.
+  + 
+  +   * Eclipse: right-click on this file and choose menu item "Run As->Ant Build"
+  +
+  +   * From command line (requires ant install)
+  +        - cd to data directory containing this file
+  +        - run ant
+  +
+  + Sleigh compiler options are read from sleighArgs.txt.
+  -->
+                                     
+<project name="privateBuildDistribution" default="sleigh-compile">
+	
+	<property name="sleigh.compile.class" value="ghidra.pcodeCPort.slgh_compile.SleighCompile"/>
+	
+	<target name="sleigh-compile">
+	    
+	    <property name="framework.path" value="../../../Framework"/>
+		
+		<path id="sleigh.class.path">
+			<fileset dir="${framework.path}/SoftwareModeling/lib">
+				<include name="*.jar"/>
+			</fileset>
+			<fileset dir="${framework.path}/Generic/lib">
+				<include name="*.jar"/>
+			</fileset>
+			<fileset dir="${framework.path}/Utility/lib">
+				<include name="*.jar"/>
+			</fileset>
+		</path>
+		
+		<available classname="${sleigh.compile.class}" classpathref="sleigh.class.path" property="sleigh.compile.exists"/>
+			
+		<fail unless="sleigh.compile.exists" />
+		
+		<java classname="${sleigh.compile.class}"
+			classpathref="sleigh.class.path"
+			fork="true"
+			failonerror="true">
+			<jvmarg value="-Xmx2048M"/>
+			<arg value="-DBaseDir=../../../../../" />  <!-- Ghidra install directory -->
+			<arg value="-i"/>
+			<arg value="sleighArgs.txt"/>
+			<arg value="-a"/>
+			<arg value="./languages"/>
+		</java>
+		
+ 	</target>
+
+</project>

Ghidra/Processors/upd78/data/languages/upd78.cspec

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<compiler_spec>
+  <global>
+    <range space="ram"/>
+  </global>
+  <stackpointer register="SP" space="ram" growth="negative"/>
+  <default_proto>
+    <prototype name="__stdcall" extrapop="-2" stackshift="-2">
+      <input>
+        <pentry minsize="1" maxsize="1">
+          <register name="A"/>
+        </pentry>
+        <pentry minsize="1" maxsize="1">
+          <register name="B"/>
+        </pentry>
+      </input>
+      <output>
+        <pentry minsize="1" maxsize="1">
+          <register name="A"/>
+        </pentry>
+        <pentry minsize="2" maxsize="2">
+          <register name="EA"/>
+        </pentry>
+      </output>
+      <unaffected>
+        <register name="SP"/>
+      </unaffected>
+    </prototype>
+  </default_proto>
+</compiler_spec>

Ghidra/Processors/upd78/data/languages/upd78.ldefs

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<language_definitions>
+  <language processor="upd78"
+            endian="little"
+            size="16"
+            variant="default"
+            version="1.0"
+            slafile="upd78.sla"
+            processorspec="upd78.pspec"
+            id="upd78:LE:16:default">
+    <description>NEC uPD78</description>
+    <compiler name="default" spec="upd78.cspec" id="default"/>
+  </language>
+</language_definitions>

Ghidra/Processors/upd78/data/languages/upd78.pspec

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<processor_spec>
+    <programcounter register="PC"/>
+    <context_data>
+        <tracked_set space="ram">
+            <set name="PSW" val="0"/>
+        </tracked_set>
+    </context_data>
+    <register_data>
+        <register name="PSW" group="Flags"/>
+        <register name="VA_" group="Alt"/>
+        <register name="BC_" group="Alt"/>
+        <register name="DE_" group="Alt"/>
+        <register name="HL_" group="Alt"/>
+        <register name="EA_" group="Alt"/>
+    </register_data>
+    <default_symbols>
+        <symbol name="RST0" address="ram:0000" entry="true"/>
+        <symbol name="NMI" address="ram:0004" entry="false"/>
+        <symbol name="INTT0_INTT1" address="ram:0008" entry="false"/>
+        <symbol name="INT1_INT2" address="ram:0010" entry="false"/>
+        <symbol name="INTE0_INTE1" address="ram:0018" entry="false"/>
+        <symbol name="INTEIN_INTAD" address="ram:0020" entry="false"/>
+        <symbol name="INTSR_INTST" address="ram:0028" entry="false"/>
+        <symbol name="SOFTI" address="ram:0060" entry="false"/>
+        <symbol name="CALL_TABLE" address="ram:0080" entry="false"/>
+    </default_symbols>
+</processor_spec>

Ghidra/Processors/upd78/data/sleighArgs.txt

@@ -0,0 +1 @@
+-t