Add TRST support to xsvf tools. Courtesy of Dick Hollenbeck <dick@softplc.com>

git-svn-id: svn://svn.berlios.de/openocd/trunk@1357 b42882b7-edfa-0310-969c-e2dbd0fdcd60

tools/xsvf_tools/xsvfdump.py

@@ -39,7 +39,8 @@ Xsdrsize = 0
 
 (XCOMPLETE,XTDOMASK,XSIR,XSDR,XRUNTEST,hole0,hole1,XREPEAT,XSDRSIZE,XSDRTDO,
     XSETSDRMASKS,XSDRINC,XSDRB,XSDRC,XSDRE,XSDRTDOB,XSDRTDOC,
-    XSDRTDOE,XSTATE,XENDIR,XENDDR,XSIR2,XCOMMENT,XWAIT,XWAITSTATE,LCOUNT,LDELAY,LSDR) = range(28)
+    XSDRTDOE,XSTATE,XENDIR,XENDDR,XSIR2,XCOMMENT,XWAIT,XWAITSTATE,
+    LCOUNT,LDELAY,LSDR,XTRST) = range(29)
 
 
 (RESET,IDLE,
@@ -51,6 +52,10 @@ State = ("RESET","IDLE",
     "DRSELECT","DRCAPTURE","DRSHIFT","DREXIT1","DRPAUSE","DREXIT2","DRUPDATE",
     "IRSELECT","IRCAPTURE","IRSHIFT","IREXIT1","IRPAUSE","IREXIT2","IRUPDATE")
 
+
+trst_mode_allowed = ('ON', 'OFF', 'Z', 'ABSENT')
+
+
 Setsdrmasks = 0
 SetsdrmasksOnesCount = 0
 
@@ -229,6 +234,14 @@ def ShowOpcode( op, f ):
         tdo = bytes2hexString( f, Xsdrsize )
         print("LSDR 0x%s 0x%s" % (tdi, tdo) )
 
+    elif op == XTRST:
+        # the argument is a single byte and it is the index into "trst_mode_allowed"
+        trst_mode = ReadByte(f)
+        if trst_mode <= 3:
+            print("TRST %s" % trst_mode_allowed[trst_mode] )
+        else:
+            print("TRST 0x%02X" % trst_mode );
+
     else:
         print("UNKNOWN op 0x%02X %d" % (op, op))
         exit(1)