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#!/usr/bin/python3.0
# Copyright 2008, SoftPLC Corporation http://softplc.com
# Dick Hollenbeck dick@softplc.com
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, you may find one here:
# http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
# or you may search the http://www.gnu.org website for the version 2 license,
# or you may write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
# Dump an Xilinx XSVF file to stdout
# This program is written for python 3.0, and it is not easy to change this
# back to 2.x. You may find it easier to use python 3.x even if that means
# building it.
import sys
import struct
LABEL = "A script to dump an XSVF file to stdout"
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,XTRST) = range(29)
(RESET,IDLE,
DRSELECT,DRCAPTURE,DRSHIFT,DREXIT1,DRPAUSE,DREXIT2,DRUPDATE,
IRSELECT,IRCAPTURE,IRSHIFT,IREXIT1,IRPAUSE,IREXIT2,IRUPDATE) = range(16)
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
def ReadSDRMASKS( f, len ):
global Setsdrmasks, SetsdrmasksOnesCount
byteCount = (len+7)//8
Setsdrmasks = f.read( byteCount )
ls = []
SetsdrmasksOnesCount = 0
for b in Setsdrmasks:
ls.append( "%x" % ((b & 0xf0) >> 4) )
ls.append( "%x" % ( b & 0x0f ) )
for i in range(8):
if b & (1<<i):
SetsdrmasksOnesCount = SetsdrmasksOnesCount +1
return ''.join(ls)
def bytes2hexString( f, len ):
byteCount = (len+7)//8
bytebuf = f.read( byteCount )
ls = []
for b in bytebuf:
ls.append( "%x" % ((b & 0xf0) >> 4) )
ls.append( "%x" % ( b & 0x0f ) )
return ''.join(ls)
def ReadByte( f ):
"""Read a byte from a file and return it as an int in least significant 8 bits"""
b = f.read(1)
if b:
return 0xff & b[0];
else:
return -1
def ShowState( state ):
"""return the given state int as a state string"""
#return "0x%02x" % state # comment this out to get textual state form
global State
if 0 <= state <= IRUPDATE:
return State[state]
else:
return "Unknown state 0x%02x" % state
def ShowOpcode( op, f ):
"""return the given byte as an opcode string"""
global Xsdrsize
if op == XCOMPLETE:
print("XCOMPLETE")
elif op == XTDOMASK:
buf = bytes2hexString( f, Xsdrsize )
print("XTDOMASK 0x%s" % buf)
elif op == XSIR:
len = ReadByte( f )
buf = bytes2hexString( f, len )
print("XSIR 0x%02X 0x%s" % (len, buf))
elif op == XSDR:
tdi = bytes2hexString( f, Xsdrsize )
print("XSDR 0x%s" % tdi)
elif op == XRUNTEST:
len = struct.unpack( '>i', f.read(4) )[0]
print("XRUNTEST 0x%08X" % len)
elif op == XREPEAT:
len = ReadByte( f )
print("XREPEAT 0x%02X" % len)
elif op == XSDRSIZE:
Xsdrsize = struct.unpack( '>i', f.read(4) )[0]
#print("XSDRSIZE 0x%08X" % Xsdrsize, file=sys.stderr )
print("XSDRSIZE 0x%08X %d" % (Xsdrsize, Xsdrsize) )
elif op == XSDRTDO:
tdi = bytes2hexString( f, Xsdrsize )
tdo = bytes2hexString( f, Xsdrsize )
print("XSDRTDO 0x%s 0x%s" % (tdi, tdo) )
elif op == XSETSDRMASKS:
addrmask = bytes2hexString( f, Xsdrsize )
datamask = ReadSDRMASKS( f, Xsdrsize )
print("XSETSDRMASKS 0x%s 0x%s" % (addrmask, datamask) )
elif op == XSDRINC:
startaddr = bytes2hexString( f, Xsdrsize )
len = ReadByte(f)
print("XSDRINC 0x%s 0x%02X" % (startaddr, len), end='' )
for numTimes in range(len):
data = bytes2hexString( f, SetsdrmasksOnesCount)
print(" 0x%s" % data )
print() # newline
elif op == XSDRB:
tdi = bytes2hexString( f, Xsdrsize )
print("XSDRB 0x%s" % tdi )
elif op == XSDRC:
tdi = bytes2hexString( f, Xsdrsize )
print("XSDRC 0x%s" % tdi )
elif op == XSDRE:
tdi = bytes2hexString( f, Xsdrsize )
print("XSDRE 0x%s" % tdi )
elif op == XSDRTDOB:
tdo = bytes2hexString( f, Xsdrsize )
print("XSDRTDOB 0x%s" % tdo )
elif op == XSDRTDOC:
tdi = bytes2hexString( f, Xsdrsize )
tdo = bytes2hexString( f, Xsdrsize )
print("XSDRTDOC 0x%s 0x%s" % (tdi, tdo) )
elif op == XSDRTDOE:
tdi = bytes2hexString( f, Xsdrsize )
tdo = bytes2hexString( f, Xsdrsize )
print("XSDRTDOE 0x%s 0x%s" % (tdi, tdo) )
elif op == XSTATE:
b = ReadByte(f)
print("XSTATE %s" % ShowState(b))
elif op == XENDIR:
b = ReadByte( f )
print("XENDIR %s" % 'IRPAUSE' if b==1 else 'IDLE')
elif op == XENDDR:
b = ReadByte( f )
print("XENDDR %s" % 'DRPAUSE' if b==1 else 'IDLE')
elif op == XSIR2:
len = struct.unpack( '>H', f.read(2) )[0]
buf = bytes2hexString( f, len )
print("XSIR2 0x%04X 0x%s" % (len, buf))
elif op == XCOMMENT:
cmt = []
while 1:
b = ReadByte(f)
if b == 0: # terminating nul
break;
cmt.append( chr(b) )
print("XCOMMENT \"%s\"" % ''.join(cmt) )
elif op == XWAIT:
run_state = ReadByte(f)
end_state = ReadByte(f)
useconds = struct.unpack( '>i', f.read(4) )[0]
print("XWAIT %s %s" % (ShowState(run_state), ShowState(end_state)), useconds)
elif op == XWAITSTATE:
run_state = ReadByte(f)
end_state = ReadByte(f)
clocks = struct.unpack( '>i', f.read(4) )[0]
useconds = struct.unpack( '>i', f.read(4) )[0]
print("XWAITSTATE %s %s CLOCKS=%d USECS=%d" % (ShowState(run_state), ShowState(end_state), clocks, useconds) )
elif op == LCOUNT:
loop_count = struct.unpack( '>i', f.read(4) )[0]
print("LCOUNT", loop_count )
elif op == LDELAY:
run_state = ReadByte(f)
clocks = struct.unpack( '>i', f.read(4) )[0]
useconds = struct.unpack( '>i', f.read(4) )[0]
print("LDELAY %s CLOCKS=%d USECS=%d" % (ShowState(run_state), clocks, useconds) )
elif op == LSDR:
tdi = bytes2hexString( f, Xsdrsize )
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)
def main():
if len( sys.argv ) < 2:
print("usage %s <xsvf_filename>" % sys.argv[0])
exit(1)
f = open( sys.argv[1], 'rb' )
opcode = ReadByte( f )
while opcode != -1:
# print the position within the file, then the command
print( "%d: " % f.tell(), end='' )
ShowOpcode( opcode, f )
opcode = ReadByte(f)
if __name__ == "__main__":
main()
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