256 lines
7.7 KiB
Python
256 lines
7.7 KiB
Python
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#!/usr/bin/python3.0
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# Copyright 2008, SoftPLC Corporation http://softplc.com
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# Dick Hollenbeck dick@softplc.com
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, you may find one here:
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# http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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# or you may search the http://www.gnu.org website for the version 2 license,
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# or you may write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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# Dump an Xilinx XSVF file to stdout
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# This program is written for python 3.0, and it is not easy to change this
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# back to 2.x. You may find it easier to use python 3.x even if that means
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# building it.
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import sys
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import struct
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LABEL = "A script to dump an XSVF file to stdout"
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Xsdrsize = 0
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(XCOMPLETE,XTDOMASK,XSIR,XSDR,XRUNTEST,hole0,hole1,XREPEAT,XSDRSIZE,XSDRTDO,
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XSETSDRMASKS,XSDRINC,XSDRB,XSDRC,XSDRE,XSDRTDOB,XSDRTDOC,
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XSDRTDOE,XSTATE,XENDIR,XENDDR,XSIR2,XCOMMENT,XWAIT,XWAITSTATE,LCOUNT,LDELAY,LSDR) = range(28)
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(RESET,IDLE,
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DRSELECT,DRCAPTURE,DRSHIFT,DREXIT1,DRPAUSE,DREXIT2,DRUPDATE,
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IRSELECT,IRCAPTURE,IRSHIFT,IREXIT1,IRPAUSE,IREXIT2,IRUPDATE) = range(16)
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State = ("RESET","IDLE",
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"DRSELECT","DRCAPTURE","DRSHIFT","DREXIT1","DRPAUSE","DREXIT2","DRUPDATE",
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"IRSELECT","IRCAPTURE","IRSHIFT","IREXIT1","IRPAUSE","IREXIT2","IRUPDATE")
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Setsdrmasks = 0
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SetsdrmasksOnesCount = 0
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def ReadSDRMASKS( f, len ):
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global Setsdrmasks, SetsdrmasksOnesCount
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byteCount = (len+7)//8
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Setsdrmasks = f.read( byteCount )
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ls = []
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SetsdrmasksOnesCount = 0
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for b in Setsdrmasks:
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ls.append( "%x" % ((b & 0xf0) >> 4) )
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ls.append( "%x" % ( b & 0x0f ) )
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for i in range(8):
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if b & (1<<i):
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SetsdrmasksOnesCount = SetsdrmasksOnesCount +1
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return ''.join(ls)
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def bytes2hexString( f, len ):
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byteCount = (len+7)//8
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bytebuf = f.read( byteCount )
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ls = []
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for b in bytebuf:
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ls.append( "%x" % ((b & 0xf0) >> 4) )
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ls.append( "%x" % ( b & 0x0f ) )
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return ''.join(ls)
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def ReadByte( f ):
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"""Read a byte from a file and return it as an int in least significant 8 bits"""
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b = f.read(1)
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if b:
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return 0xff & b[0];
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else:
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return -1
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def ShowState( state ):
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"""return the given state int as a state string"""
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#return "0x%02x" % state # comment this out to get textual state form
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global State
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if 0 <= state <= IRUPDATE:
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return State[state]
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else:
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return "Unknown state 0x%02x" % state
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def ShowOpcode( op, f ):
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"""return the given byte as an opcode string"""
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global Xsdrsize
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if op == XCOMPLETE:
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print("XCOMPLETE")
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elif op == XTDOMASK:
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buf = bytes2hexString( f, Xsdrsize )
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print("XTDOMASK 0x%s" % buf)
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elif op == XSIR:
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len = ReadByte( f )
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buf = bytes2hexString( f, len )
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print("XSIR 0x%02X 0x%s" % (len, buf))
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elif op == XSDR:
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tdi = bytes2hexString( f, Xsdrsize )
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print("XSDR 0x%s" % tdi)
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elif op == XRUNTEST:
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len = struct.unpack( '>i', f.read(4) )[0]
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print("XRUNTEST 0x%08X" % len)
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elif op == XREPEAT:
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len = ReadByte( f )
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print("XREPEAT 0x%02X" % len)
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elif op == XSDRSIZE:
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Xsdrsize = struct.unpack( '>i', f.read(4) )[0]
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#print("XSDRSIZE 0x%08X" % Xsdrsize, file=sys.stderr )
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print("XSDRSIZE 0x%08X %d" % (Xsdrsize, Xsdrsize) )
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elif op == XSDRTDO:
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tdi = bytes2hexString( f, Xsdrsize )
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tdo = bytes2hexString( f, Xsdrsize )
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print("XSDRTDO 0x%s 0x%s" % (tdi, tdo) )
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elif op == XSETSDRMASKS:
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addrmask = bytes2hexString( f, Xsdrsize )
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datamask = ReadSDRMASKS( f, Xsdrsize )
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print("XSETSDRMASKS 0x%s 0x%s" % (addrmask, datamask) )
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elif op == XSDRINC:
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startaddr = bytes2hexString( f, Xsdrsize )
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len = ReadByte(f)
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print("XSDRINC 0x%s 0x%02X" % (startaddr, len), end='' )
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for numTimes in range(len):
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data = bytes2hexString( f, SetsdrmasksOnesCount)
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print(" 0x%s" % data )
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print() # newline
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elif op == XSDRB:
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tdi = bytes2hexString( f, Xsdrsize )
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print("XSDRB 0x%s" % tdi )
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elif op == XSDRC:
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tdi = bytes2hexString( f, Xsdrsize )
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print("XSDRC 0x%s" % tdi )
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elif op == XSDRE:
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tdi = bytes2hexString( f, Xsdrsize )
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print("XSDRE 0x%s" % tdi )
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elif op == XSDRTDOB:
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tdo = bytes2hexString( f, Xsdrsize )
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print("XSDRTDOB 0x%s" % tdo )
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elif op == XSDRTDOC:
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tdi = bytes2hexString( f, Xsdrsize )
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tdo = bytes2hexString( f, Xsdrsize )
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print("XSDRTDOC 0x%s 0x%s" % (tdi, tdo) )
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elif op == XSDRTDOE:
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tdi = bytes2hexString( f, Xsdrsize )
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tdo = bytes2hexString( f, Xsdrsize )
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print("XSDRTDOE 0x%s 0x%s" % (tdi, tdo) )
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elif op == XSTATE:
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b = ReadByte(f)
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print("XSTATE %s" % ShowState(b))
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elif op == XENDIR:
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b = ReadByte( f )
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print("XENDIR %s" % ShowState(b))
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elif op == XENDDR:
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b = ReadByte( f )
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print("XENDDR %s" % ShowState(b))
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elif op == XSIR2:
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len = struct.unpack( '>H', f.read(2) )[0]
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buf = bytes2hexString( f, len )
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print("XSIR2 0x%04X 0x%s" % (len, buf))
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elif op == XCOMMENT:
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cmt = []
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while 1:
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b = ReadByte(f)
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if b == 0: # terminating nul
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break;
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cmt.append( chr(b) )
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print("XCOMMENT \"%s\"" % ''.join(cmt) )
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elif op == XWAIT:
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run_state = ReadByte(f)
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end_state = ReadByte(f)
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useconds = struct.unpack( '>i', f.read(4) )[0]
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print("XWAIT %s %s" % (ShowState(run_state), ShowState(end_state)), useconds)
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elif op == XWAITSTATE:
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run_state = ReadByte(f)
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end_state = ReadByte(f)
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clocks = struct.unpack( '>i', f.read(4) )[0]
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useconds = struct.unpack( '>i', f.read(4) )[0]
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print("XWAITSTATE %s %s CLOCKS=%d USECS=%d" % (ShowState(run_state), ShowState(end_state), clocks, useconds) )
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elif op == LCOUNT:
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loop_count = struct.unpack( '>i', f.read(4) )[0]
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print("LCOUNT", loop_count )
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elif op == LDELAY:
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run_state = ReadByte(f)
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clocks = struct.unpack( '>i', f.read(4) )[0]
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useconds = struct.unpack( '>i', f.read(4) )[0]
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print("LDELAY %s CLOCKS=%d USECS=%d" % (ShowState(run_state), clocks, useconds) )
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elif op == LSDR:
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tdi = bytes2hexString( f, Xsdrsize )
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tdo = bytes2hexString( f, Xsdrsize )
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print("LSDR 0x%s 0x%s" % (tdi, tdo) )
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else:
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print("UNKNOWN op 0x%02X %d" % (op, op))
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exit(1)
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def main():
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if len( sys.argv ) < 2:
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print("usage %s <xsvf_filename>" % sys.argv[0])
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exit(1)
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f = open( sys.argv[1], 'rb' )
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opcode = ReadByte( f )
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while opcode != -1:
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# print the position within the file, then the command
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print( "%d: " % f.tell(), end='' )
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ShowOpcode( opcode, f )
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opcode = ReadByte(f)
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if __name__ == "__main__":
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main()
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