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klipper-dgus/scripts/buildcommands.py

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#!/usr/bin/env python2
# Script to handle build time requests embedded in C code.
#
# Copyright (C) 2016-2018 Kevin O'Connor <kevin@koconnor.net>
#
# This file may be distributed under the terms of the GNU GPLv3 license.
import sys, os, subprocess, optparse, logging, shlex, socket, time, traceback
import json, zlib
sys.path.append('./klippy')
import msgproto
FILEHEADER = """
/* DO NOT EDIT! This is an autogenerated file. See scripts/buildcommands.py. */
#include "board/irq.h"
#include "board/pgm.h"
#include "command.h"
#include "compiler.h"
"""
def error(msg):
sys.stderr.write(msg + "\n")
sys.exit(-1)
Handlers = []
######################################################################
# C call list generation
######################################################################
# Create dynamic C functions that call a list of other C functions
class HandleCallList:
def __init__(self):
self.call_lists = {'ctr_run_initfuncs': []}
self.ctr_dispatch = { '_DECL_CALLLIST': self.decl_calllist }
def decl_calllist(self, req):
funcname, callname = req.split()[1:]
self.call_lists.setdefault(funcname, []).append(callname)
def update_data_dictionary(self, data):
pass
def generate_code(self, options):
code = []
for funcname, funcs in self.call_lists.items():
func_code = [' extern void %s(void);\n %s();' % (f, f)
for f in funcs]
if funcname == 'ctr_run_taskfuncs':
func_code = [' irq_poll();\n' + fc for fc in func_code]
fmt = """
void
%s(void)
{
%s
}
"""
code.append(fmt % (funcname, "\n".join(func_code).strip()))
return "".join(code)
Handlers.append(HandleCallList())
######################################################################
# Static string generation
######################################################################
STATIC_STRING_MIN = 2
# Generate a dynamic string to integer mapping
class HandleStaticStrings:
def __init__(self):
self.static_strings = []
self.found_strings = {}
self.ctr_dispatch = { '_DECL_STATIC_STR': self.decl_static_str }
def decl_static_str(self, req):
msg = req.split(None, 1)[1]
if msg not in self.found_strings:
self.found_strings[msg] = 1
self.static_strings.append(msg)
def update_data_dictionary(self, data):
data['static_strings'] = { i + STATIC_STRING_MIN: s
for i, s in enumerate(self.static_strings) }
def generate_code(self, options):
code = []
for i, s in enumerate(self.static_strings):
code.append(' if (__builtin_strcmp(str, "%s") == 0)\n'
' return %d;\n' % (s, i + STATIC_STRING_MIN))
fmt = """
uint8_t __always_inline
ctr_lookup_static_string(const char *str)
{
%s
return 0xff;
}
"""
return fmt % ("".join(code).strip(),)
Handlers.append(HandleStaticStrings())
######################################################################
# Constants
######################################################################
# Allow adding build time constants to the data dictionary
class HandleConstants:
def __init__(self):
self.constants = {}
self.ctr_dispatch = { '_DECL_CONSTANT': self.decl_constant }
def decl_constant(self, req):
name, value = req.split()[1:]
value = value.strip()
if value.startswith('"') and value.endswith('"'):
value = value[1:-1]
if name in self.constants and self.constants[name] != value:
error("Conflicting definition for constant '%s'" % name)
self.constants[name] = value
def update_data_dictionary(self, data):
data['config'] = self.constants
def generate_code(self, options):
return ""
Handlers.append(HandleConstants())
######################################################################
# Wire protocol commands and responses
######################################################################
# Dynamic command and response registration
class HandleCommandGeneration:
def __init__(self):
self.commands = {}
self.encoders = []
self.msg_to_id = { m: i for i, m in msgproto.DefaultMessages.items() }
self.messages_by_name = { m.split()[0]: m for m in self.msg_to_id }
self.all_param_types = {}
self.ctr_dispatch = {
'_DECL_COMMAND': self.decl_command,
'_DECL_ENCODER': self.decl_encoder,
'_DECL_OUTPUT': self.decl_output
}
def decl_command(self, req):
funcname, flags, msgname = req.split()[1:4]
if msgname in self.commands:
error("Multiple definitions for command '%s'" % msgname)
self.commands[msgname] = (funcname, flags, msgname)
msg = req.split(None, 3)[3]
m = self.messages_by_name.get(msgname)
if m is not None and m != msg:
error("Conflicting definition for command '%s'" % msgname)
self.messages_by_name[msgname] = msg
def decl_encoder(self, req):
msg = req.split(None, 1)[1]
msgname = msg.split()[0]
m = self.messages_by_name.get(msgname)
if m is not None and m != msg:
error("Conflicting definition for message '%s'" % msgname)
self.messages_by_name[msgname] = msg
self.encoders.append((msgname, msg))
def decl_output(self, req):
msg = req.split(None, 1)[1]
self.encoders.append((None, msg))
def create_message_ids(self):
# Create unique ids for each message type
msgid = max(self.msg_to_id.values())
for msgname in self.commands.keys() + [m for n, m in self.encoders]:
msg = self.messages_by_name.get(msgname, msgname)
if msg not in self.msg_to_id:
msgid += 1
self.msg_to_id[msg] = msgid
def update_data_dictionary(self, data):
messages = { msgid: msg for msg, msgid in self.msg_to_id.items() }
data['messages'] = messages
commands = [self.msg_to_id[msg]
for msgname, msg in self.messages_by_name.items()
if msgname in self.commands]
data['commands'] = sorted(commands)
responses = [self.msg_to_id[msg]
for msgname, msg in self.messages_by_name.items()
if msgname not in self.commands]
data['responses'] = sorted(responses)
def build_parser(self, parser, iscmd):
if parser.name == "#output":
comment = "Output: " + parser.msgformat
else:
comment = parser.msgformat
params = '0'
types = tuple([t.__class__.__name__ for t in parser.param_types])
if types:
paramid = self.all_param_types.get(types)
if paramid is None:
paramid = len(self.all_param_types)
self.all_param_types[types] = paramid
params = 'command_parameters%d' % (paramid,)
out = """
// %s
.msg_id=%d,
.num_params=%d,
.param_types = %s,
""" % (comment, parser.msgid, len(types), params)
if iscmd:
num_args = (len(types) + types.count('PT_progmem_buffer')
+ types.count('PT_buffer'))
out += " .num_args=%d," % (num_args,)
else:
max_size = min(msgproto.MESSAGE_MAX,
(msgproto.MESSAGE_MIN + 1
+ sum([t.max_length for t in parser.param_types])))
out += " .max_size=%d," % (max_size,)
return out
def generate_responses_code(self):
encoder_defs = []
output_code = []
encoder_code = []
did_output = {}
for msgname, msg in self.encoders:
msgid = self.msg_to_id[msg]
if msgid in did_output:
continue
s = msg
did_output[msgid] = True
code = (' if (__builtin_strcmp(str, "%s") == 0)\n'
' return &command_encoder_%s;\n' % (s, msgid))
if msgname is None:
parser = msgproto.OutputFormat(msgid, msg)
output_code.append(code)
else:
parser = msgproto.MessageFormat(msgid, msg)
encoder_code.append(code)
parsercode = self.build_parser(parser, 0)
encoder_defs.append(
"const struct command_encoder command_encoder_%s PROGMEM = {"
" %s\n};\n" % (
msgid, parsercode))
fmt = """
%s
const __always_inline struct command_encoder *
ctr_lookup_encoder(const char *str)
{
%s
return NULL;
}
const __always_inline struct command_encoder *
ctr_lookup_output(const char *str)
{
%s
return NULL;
}
"""
return fmt % ("".join(encoder_defs).strip(),
"".join(encoder_code).strip(),
"".join(output_code).strip())
def generate_commands_code(self):
cmd_by_id = {
self.msg_to_id[self.messages_by_name.get(msgname, msgname)]: cmd
for msgname, cmd in self.commands.items()
}
max_cmd_msgid = max(cmd_by_id.keys())
index = []
externs = {}
for msgid in range(max_cmd_msgid+1):
if msgid not in cmd_by_id:
index.append(" {\n},")
continue
funcname, flags, msgname = cmd_by_id[msgid]
msg = self.messages_by_name[msgname]
externs[funcname] = 1
parser = msgproto.MessageFormat(msgid, msg)
parsercode = self.build_parser(parser, 1)
index.append(" {%s\n .flags=%s,\n .func=%s\n}," % (
parsercode, flags, funcname))
index = "".join(index).strip()
externs = "\n".join(["extern void "+funcname+"(uint32_t*);"
for funcname in sorted(externs)])
fmt = """
%s
const struct command_parser command_index[] PROGMEM = {
%s
};
const uint8_t command_index_size PROGMEM = ARRAY_SIZE(command_index);
"""
return fmt % (externs, index)
def generate_param_code(self):
sorted_param_types = sorted(
[(i, a) for a, i in self.all_param_types.items()])
params = ['']
for paramid, argtypes in sorted_param_types:
params.append(
'static const uint8_t command_parameters%d[] PROGMEM = {\n'
' %s };' % (
paramid, ', '.join(argtypes),))
params.append('')
return "\n".join(params)
def generate_code(self, options):
self.create_message_ids()
parsercode = self.generate_responses_code()
cmdcode = self.generate_commands_code()
paramcode = self.generate_param_code()
return paramcode + parsercode + cmdcode
Handlers.append(HandleCommandGeneration())
######################################################################
# Version generation
######################################################################
# Run program and return the specified output
def check_output(prog):
logging.debug("Running %s" % (repr(prog),))
try:
process = subprocess.Popen(shlex.split(prog), stdout=subprocess.PIPE)
output = process.communicate()[0]
retcode = process.poll()
except OSError:
logging.debug("Exception on run: %s" % (traceback.format_exc(),))
return ""
logging.debug("Got (code=%s): %s" % (retcode, repr(output)))
if retcode:
return ""
try:
return output.decode()
except UnicodeError:
logging.debug("Exception on decode: %s" % (traceback.format_exc(),))
return ""
# Obtain version info from "git" program
def git_version():
if not os.path.exists('.git'):
logging.debug("No '.git' file/directory found")
return ""
ver = check_output("git describe --always --tags --long --dirty").strip()
logging.debug("Got git version: %s" % (repr(ver),))
return ver
def build_version(extra):
version = git_version()
if not version:
version = "?"
btime = time.strftime("%Y%m%d_%H%M%S")
hostname = socket.gethostname()
version = "%s-%s-%s%s" % (version, btime, hostname, extra)
return version
# Run "tool --version" for each specified tool and extract versions
def tool_versions(tools):
tools = [t.strip() for t in tools.split(';')]
versions = ['', '']
success = 0
for tool in tools:
# Extract first line from "tool --version" output
verstr = check_output("%s --version" % (tool,)).split('\n')[0]
# Check if this tool looks like a binutils program
isbinutils = 0
if verstr.startswith('GNU '):
isbinutils = 1
verstr = verstr[4:]
# Extract version information and exclude program name
if ' ' not in verstr:
continue
prog, ver = verstr.split(' ', 1)
if not prog or not ver:
continue
# Check for any version conflicts
if versions[isbinutils] and versions[isbinutils] != ver:
logging.debug("Mixed version %s vs %s" % (
repr(versions[isbinutils]), repr(ver)))
versions[isbinutils] = "mixed"
continue
versions[isbinutils] = ver
success += 1
cleanbuild = versions[0] and versions[1] and success == len(tools)
return cleanbuild, "gcc: %s binutils: %s" % (versions[0], versions[1])
# Add version information to the data dictionary
class HandleVersions:
def __init__(self):
self.ctr_dispatch = {}
self.toolstr = self.version = ""
def update_data_dictionary(self, data):
data['version'] = self.version
data['build_versions'] = self.toolstr
def generate_code(self, options):
cleanbuild, self.toolstr = tool_versions(options.tools)
self.version = build_version(options.extra)
sys.stdout.write("Version: %s\n" % (self.version,))
return "\n// version: %s\n// build_versions: %s\n" % (
self.version, self.toolstr)
Handlers.append(HandleVersions())
######################################################################
# Identify data dictionary generation
######################################################################
# Automatically generate the wire protocol data dictionary
class HandleIdentify:
def __init__(self):
self.ctr_dispatch = {}
def update_data_dictionary(self, data):
pass
def generate_code(self, options):
# Generate data dictionary
data = {}
for h in Handlers:
h.update_data_dictionary(data)
datadict = json.dumps(data, separators=(',', ':'))
# Write data dictionary
if options.write_dictionary:
f = open(options.write_dictionary, 'wb')
f.write(datadict)
f.close()
# Format compressed info into C code
zdatadict = zlib.compress(datadict, 9)
out = []
for i in range(len(zdatadict)):
if i % 8 == 0:
out.append('\n ')
out.append(" 0x%02x," % (ord(zdatadict[i]),))
fmt = """
const uint8_t command_identify_data[] PROGMEM = {%s
};
// Identify size = %d (%d uncompressed)
const uint32_t command_identify_size PROGMEM
= ARRAY_SIZE(command_identify_data);
"""
return fmt % (''.join(out), len(zdatadict), len(datadict))
Handlers.append(HandleIdentify())
######################################################################
# Main code
######################################################################
def main():
usage = "%prog [options] <cmd section file> <output.c>"
opts = optparse.OptionParser(usage)
opts.add_option("-e", "--extra", dest="extra", default="",
help="extra version string to append to version")
opts.add_option("-d", dest="write_dictionary",
help="file to write mcu protocol dictionary")
opts.add_option("-t", "--tools", dest="tools", default="",
help="list of build programs to extract version from")
opts.add_option("-v", action="store_true", dest="verbose",
help="enable debug messages")
options, args = opts.parse_args()
if len(args) != 2:
opts.error("Incorrect arguments")
incmdfile, outcfile = args
if options.verbose:
logging.basicConfig(level=logging.DEBUG)
# Parse request file
ctr_dispatch = { k: v for h in Handlers for k, v in h.ctr_dispatch.items() }
f = open(incmdfile, 'rb')
data = f.read()
f.close()
for req in data.split('\0'):
req = req.lstrip()
if not req:
continue
cmd = req.split()[0]
if cmd not in ctr_dispatch:
error("Unknown build time command '%s'" % cmd)
ctr_dispatch[cmd](req)
# Write output
code = "".join([FILEHEADER] + [h.generate_code(options) for h in Handlers])
f = open(outcfile, 'wb')
f.write(code)
f.close()
if __name__ == '__main__':
main()
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