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#!/usr/bin/python
# Author: Andreas Herrmann <andreas.herrmann3@amd.com>
#
# Copyright (C) 2008 Advanced Micro Devices, Inc.
#
# Licensed under the terms of the GNU GENERAL PUBLIC LICENSE version 2.
# See file COPYING for details.
# This script creates C header files from some register
# description files.
#
# The general format for those register descriptions is
#
# {<name>=<address>;[<description>]
# [<field name>]:<bit width>[;<value>=<string>|]
# [<field name>]:<bit width>[;<value>=<string>|]
# ...
# [<field name>]:<bit width>[;<value>=<string>|]
# }
#
# If no field name is provided the field is reserved and might
# not be displayed with the msr viewing tool. The optional <value>=<string>
# data is for bit field decoding but it's currently not yet supported.
# Todos/Nice-to-have:
# - comments in this script (?)
# - create information for bit field decoding
# - warn if names contain whitespace characters
# - add include/insert statement to avoid dup definitions of common register
# - allow annotations for registers (e.g. write-only)
# - improve command line handling
import re
import sys
import os
progname=os.path.basename(sys.argv[0])
if len(sys.argv) < 3:
print(progname + ": invalid number of argumenst")
print("\nUSAGE:")
print(progname + " <input file> <struct name>")
print("\nEXAMPLE:")
print(progname + " k8regs.txt k8 >k8.h")
sys.exit(1)
f=open(sys.argv[1])
family=sys.argv[2]
print(\
"/*\n"\
" * Licensed under the terms of the GNU GENERAL PUBLIC LICENSE version 2.\n"\
" * See file COPYING for details.\n"\
" */\n")
print("#ifndef " + family + "_h")
print("#define " + family + "_h\n")
if (re.search("/", sys.argv[1])):
print("#include \"../msr.h\"\n")
else:
print("#include \"msr.h\"\n")
struct=[]
for line in f:
if (re.search("^#",line)):
continue
if (re.search("^{",line)):
start=1; end=0
tmp=line.split("{")[1]
tmp=tmp.split("=")
reg_name=tmp[0].strip()
tmp=tmp[1].split(";")
reg_addr=tmp[0].strip()
if len(tmp) > 1:
reg_desc=tmp[1].strip()
else:
reg_desc=""
spec=[]
if (re.search("^}",line)):
end=1
str1="_RANGE(" + family + "_" + reg_name
str2="_NAMES(" + family + "_" + reg_name
for e in spec:
if e[0]=="":
str2 += ",0"
else:
str2 += ",\"" + e[0] +"\""
str1 += "," + e[1]
str1 += ",0);"
str2 += ");"
print(str1)
print(str2)
str3 = "_SPEC(" + reg_addr + ", " + reg_name + ", "
if reg_desc != "":
str3 += "\"" + reg_desc + "\", "
else:
str3 += "NULL, "
str3 += family + "_)"
struct.append(str3)
if (re.search(":", line)):
tmp=line.split(";")
field=tmp[0].split(":")
fname=field[0].strip()
fwidth=field[1].strip()
spec.append([fname, fwidth])
print("\nstruct reg_spec " + family + "_spec [] = {")
for i in struct:
print("\t" + i + ",")
print(" {0, NULL, NULL, NULL, NULL},")
print("};\n")
print("#endif /* " + family + "_h */")
f.close()
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