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zephyr/scripts/sysgen
David Brown 8405ce13a1 scripts: Explicitly call out python2 
At least one Linux distribution (Arch) has made python 3 the default
interpreter, and Debian and Ubuntu have expressed a desire to eventually
make this the case.  As such, invoking 'python' or '/usr/bin/python'
will possibly run python 3 instead of version 2.

Distributions have included a 'python2' link for quite some time now,
and given that we have some scripts that require python 3, we should be
explicit about those that require python 2.

In addition, be more consistent about how python is invoked, preferring
the:

  #!/usr/bin/env python2

construct rather than a hardcoded path to python.  This allows the user
to have an alternative python in their path that will be used in
preference to the system provided version.

Jira: ZEP-1548
Change-Id: I125c2af808dc268f74277bc97a092df3acad23c0
Signed-off-by: David Brown <david.brown@linaro.org>
2017-01-12 10:28:02 -07:00

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#! /usr/bin/env python2
#
# sysgen - System Generator
#
#
# Copyright (c) 2015, Wind River Systems, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# Arguments:
# - name of MDEF file
# - name of directory for output files (optional)
# Generates:
# - kernel_main.c file
# - kernel_main.h file (local copy)
# - micro_private_types.h file (local copy)
# - sysgen.h file
import os
import sys
import subprocess
import argparse
# global variables describing system
MIN_HEAP = 64
heap_pos_in_pool_list = -1
num_kargs = 0
num_timers = 0
num_prios = 0
task_list = []
event_list = []
mutex_list = []
sema_list = []
fifo_list = []
pipe_list = []
mbx_list = []
map_list = []
pool_list = []
group_dictionary = {}
group_key_list = []
# global variables used during generation of output files
do_not_edit_warning = \
"\n\n\n/* THIS FILE IS AUTOGENERATED -- DO NOT MODIFY! */\n\n\n"
copyright = \
"/*\n" + \
" * Copyright (c) 2015 Wind River Systems, Inc.\n" + \
" *\n" + \
" * Licensed under the Apache License, Version 2.0 (the \"License\");\n" + \
" * you may not use this file except in compliance with the License.\n" + \
" * You may obtain a copy of the License at\n" + \
" *\n" + \
" * http://www.apache.org/licenses/LICENSE-2.0\n" + \
" *\n" + \
" * Unless required by applicable law or agreed to in writing, software\n" + \
" * distributed under the License is distributed on an \"AS IS\" BASIS,\n" + \
" * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n" + \
" * See the License for the specific language governing permissions and\n" + \
" * limitations under the License.\n" + \
" */\n"
output_dir = ""
input_mdef_file = ""
def get_cmdline_args():
""" Handle optional output directory argument """
global input_mdef_file
global output_dir
output_dir_help='output directory for kernel_main.*, sysgen.h, etc'
input_mdef_file_help='input MDEF file'
parser = argparse.ArgumentParser()
parser.add_argument('-i', '--input-mdef-file', action='store',
required=True, help=input_mdef_file_help)
parser.add_argument('-o', '--output-dir', action='store',
help=output_dir_help)
args = parser.parse_args()
input_mdef_file = args.input_mdef_file
if (args.output_dir != None):
output_dir = args.output_dir
def write_file(filename, contents):
""" Create file using specified name and contents """
f = open(filename, 'w') # overwrites file if it already exists
f.write(contents)
f.close()
#
# ERROR HANDLING
#
def sysgen_error(msg):
print("\n*** sysgen error: " + msg + "\n")
sys.exit(1)
def error_arg_count(line):
sysgen_error("invalid number of arguments on following line\n" + line)
#
# CREATE INTERNAL REPRESENTATION OF SYSTEM
#
def mdef_parse():
""" Parse MDEF file """
global num_kargs
global num_timers
global num_prios
global MIN_HEAP
global heap_pos_in_pool_list
# read file contents in a single shot
with open(input_mdef_file, 'r') as infile:
data = infile.read()
# create list of the lines, breaking at line boundaries
my_list = data.splitlines()
# process each line
for line in my_list:
words = line.split()
if (len(words) == 0):
continue # ignore blank line
if (words[0][0] == "%"):
continue # ignore comment line
if (words[0] == "CONFIG"):
if (len(words) != 4):
error_arg_count(line)
num_kargs = int(words[1])
num_timers = int(words[2])
num_prios = int(words[3])
continue
if (words[0] == "TASK"):
if len(words) < 6 and len(words) > 10:
error_arg_count(line)
p1 = 0
p2 = 0
p3 = 0
if len(words) >= 7:
p1 = words[6]
if len(words) >= 8:
p2 = words[7]
if len(words) == 9:
p3 = words[8]
abort = 0
if len(words) == 10:
abort = words[9]
task_list.append((words[1], int(words[2]), words[3],
int(words[4]), words[5], p1, p2, p3, abort))
continue
if (words[0] == "TASKGROUP"):
if (len(words) != 2):
error_arg_count(line)
if words[1] in group_dictionary:
continue # ignore re-definition of a task group
group_bitmask = 1 << len(group_dictionary)
group_dictionary[words[1]] = group_bitmask
group_key_list.append(words[1])
continue
if (words[0] == "EVENT"):
if (len(words) != 3):
error_arg_count(line)
event_list.append((words[1], words[2]))
continue
if (words[0] == "SEMA"):
if len(words) < 2 and len(words) > 4:
error_arg_count(line)
if len(words) == 2:
sema_list.append((words[1], 0, 0xffffffff))
elif len(words) == 3:
sema_list.append((words[1], int(words[2]), 0xffffffff))
else:
sema_list.append((words[1], int(words[2]), int(words[3])))
continue
if (words[0] == "MUTEX"):
if (len(words) != 2):
error_arg_count(line)
mutex_list.append((words[1],))
continue
if (words[0] == "FIFO"):
if (len(words) != 4):
error_arg_count(line)
fifo_list.append((words[1], int(words[2]), int(words[3])))
continue
if (words[0] == "PIPE"):
if (len(words) != 3):
error_arg_count(line)
pipe_list.append((words[1], int(words[2])))
continue
if (words[0] == "MAILBOX"):
if (len(words) != 2):
error_arg_count(line)
mbx_list.append((words[1],))
continue
if (words[0] == "MAP"):
if (len(words) != 4):
error_arg_count(line)
map_list.append((words[1], int(words[2]), int(words[3])))
continue
if (words[0] == "POOL"):
if (len(words) != 5):
error_arg_count(line)
pool_list.append((words[1], int(words[2]), int(words[3]),
int(words[4])))
continue
if (words[0] == "HEAP_SIZE"):
if (len(words) != 2):
error_arg_count(line)
heap_size = int(words[1])
heap_pos_in_pool_list = len(pool_list)
pool_list.append(("_HEAP_MEM_POOL", MIN_HEAP, heap_size, 1))
continue
sysgen_error("unrecognized keyword %s on following line\n%s" %
(words[0], line))
#
# GENERATE kernel_main.c FILE
#
kernel_main_c_data = ""
kernel_main_c_filename_str = \
"/* kernel_main.c - kernel objects */\n\n"
def kernel_main_c_out(string):
""" Append a string to kernel_main.c """
global kernel_main_c_data
kernel_main_c_data += string
def kernel_main_c_header():
""" Generate initial portion of kernel_main.c """
kernel_main_c_out(
kernel_main_c_filename_str +
copyright +
do_not_edit_warning +
"\n" +
"#include <sysgen.h>\n" +
"#include <debug/object_tracing_common.h>\n" +
"#include <kernel.h>\n" +
"#include <toolchain.h>\n" +
"#include <sections.h>\n")
def get_group_bitmask(group_str):
# create bitmask of group(s) task belongs to
group_bitmask = 0
group_set = group_str[1:len(group_str) - 1] # drop [] surrounding groups
if (group_set != ""):
group_list = group_set.split(',')
for group in group_list:
group_bitmask |= group_dictionary[group]
return group_bitmask
def is_float(x):
try:
float(x)
return True
except ValueError:
return False
def is_int(x):
try:
int(x)
return True
except ValueError:
return False
def is_number(x):
return is_float(x) or is_int(x)
def kernel_main_c_tasks():
global num_prios
kernel_main_c_out("\n")
# declare task entry points
kernel_main_c_out("\n")
for task in task_list:
entry = task[2]
if entry == "main":
# We will re-use existing main_thread
continue
kernel_main_c_out("EXTERN_C void %s(void *, void *, void *);\n" %
entry)
# thread_init objects
kernel_main_c_out("\n")
for task in task_list:
name = task[0]
prio = task[1]
entry = task[2]
stack_size = task[3]
if entry == "main":
# We will re-use existing main thread
continue
groups = get_group_bitmask(task[4])
params = (task[5], task[6], task[7])
for param in params:
if not is_number(param):
kernel_main_c_out("extern void *%s;\n" % (param));
abort = task[8]
if abort != 0 and abort != 'NULL':
kernel_main_c_out("EXTERN_C void %s(void);\n" % abort)
kernel_main_c_out(
"_MDEF_THREAD_DEFINE(%s, %u, %s, %s, %s, %s, %s, %d, 0x%x);\n" %
(name, int(stack_size), entry,
params[0], params[1], params[2],
abort, int(prio), int(groups)))
def kernel_main_c_events():
""" Generate event variables """
event_type = 'struct k_alert *'
# event descriptors
# project-specific events
for event in event_list:
# if there is a handler function, it needs to be declared
# before setting up the object via DEFINE_EVENT()
#
# in other words, no declaration if handler is NULL or 0
handler = event[1].strip().lower()
if handler != "null" and handler != "0":
kernel_main_c_out("extern int %s(%s event);\n" %
(event[1], event_type))
kernel_main_c_out("K_ALERT_DEFINE(_k_event_obj_%s, %s, 1);\n" %
(event[0], event[1]))
def kernel_main_c_mutexes():
""" Generate mutex variables """
total_mutexes = len(mutex_list)
if (total_mutexes == 0):
return
# mutex descriptors
kernel_main_c_out("\n")
for mutex in mutex_list:
name = mutex[0]
kernel_main_c_out("K_MUTEX_DEFINE(_k_mutex_obj_%s);\n" % (name))
def kernel_main_c_semas():
""" Generate semaphore variables """
total_semas = len(sema_list)
if (total_semas == 0):
return
# semaphore descriptors
kernel_main_c_out("\n")
for semaphore in sema_list:
name = semaphore[0]
initial_count = semaphore[1]
limit = semaphore[2]
kernel_main_c_out("K_SEM_DEFINE(_k_sem_obj_%s, %s, %s);\n" %
(name, initial_count, limit))
def kernel_main_c_fifos():
""" Generate FIFO variables """
total_fifos = len(fifo_list)
if (total_fifos == 0):
return
kernel_main_c_out("\n")
# message queue objects
for fifo in fifo_list:
name = fifo[0]
depth = fifo[1]
width = fifo[2]
kernel_main_c_out("K_MSGQ_DEFINE(_k_fifo_obj_%s, %s, %s, 4);\n" %
(name, width, depth))
def kernel_main_c_pipes():
""" Generate pipe variables """
total_pipes = len(pipe_list)
if (total_pipes == 0):
return
# pipe buffers
kernel_main_c_out("\n")
# pipe objects
for pipe in pipe_list:
name = pipe[0]
size = pipe[1]
kernel_main_c_out("K_PIPE_DEFINE(_k_pipe_obj_%s, %d, 4);\n" %
(name, size))
def kernel_main_c_mailboxes():
""" Generate mailbox variables """
total_mbxs = len(mbx_list)
if (total_mbxs == 0):
return
kernel_main_c_out("\n")
# mailbox objects
for mbx in mbx_list:
name = mbx[0]
kernel_main_c_out("K_MBOX_DEFINE(_k_mbox_obj_%s);\n" % (name))
def kernel_main_c_maps():
""" Generate memory map variables """
total_maps = len(map_list)
if (total_maps == 0):
return
kernel_main_c_out("\n")
# memory map objects
for map in map_list:
name = map[0]
blocks = map[1]
block_size = map[2]
kernel_main_c_out("K_MEM_SLAB_DEFINE(_k_mem_map_obj_%s, %s, %s, 4);\n" %
(name, block_size, blocks))
def kernel_main_c_pools():
""" Generate memory pool variables """
global heap_pos_in_pool_list
total_pools = len(pool_list)
# pool global variables
kernel_main_c_out("\nint _k_mem_pool_count = %d;\n" % (total_pools))
pool_descriptors = ""
for pool in pool_list:
kernel_main_c_out("\n")
min_block_size = pool[1]
max_block_size = pool[2]
num_maximal_blocks = pool[3]
pool_descriptors += "K_MEM_POOL_DEFINE(_k_mem_pool_obj_%s, %d, %d, %d, 4);\n" % \
(pool[0], min_block_size, max_block_size,
num_maximal_blocks)
if (heap_pos_in_pool_list != -1):
kernel_main_c_out(
"\nkmemory_pool_t _heap_mem_pool_ptr = " +
"&_k_mem_pool_obj__HEAP_MEM_POOL;\n")
kernel_main_c_out(pool_descriptors)
def kernel_main_c_generate():
""" Generate kernel_main.c file """
global kernel_main_c_data
kernel_main_c_header()
kernel_main_c_mutexes()
kernel_main_c_semas()
kernel_main_c_events()
kernel_main_c_maps()
kernel_main_c_fifos()
kernel_main_c_mailboxes()
kernel_main_c_tasks()
kernel_main_c_pipes()
kernel_main_c_pools()
write_file(output_dir + 'kernel_main.c', kernel_main_c_data)
#
# GENERATE sysgen.h FILE
#
sysgen_h_data = ""
sysgen_h_filename_str = \
"/* sysgen.h - system generated kernel definitions */\n\n"
sysgen_h_include_guard = "_SYSGEN__H_"
sysgen_h_header_include_guard_str = \
"#ifndef " + sysgen_h_include_guard + "\n" \
"#define " + sysgen_h_include_guard + "\n\n"
def generate_sysgen_h_header():
global sysgen_h_data
kernel_api_file = "#include <kernel.h>\n"
sysgen_h_data += \
sysgen_h_filename_str + \
copyright + \
do_not_edit_warning + \
kernel_api_file + \
sysgen_h_header_include_guard_str + \
"\n"
def generate_taskgroup_line(taskgroup, group_id):
global sysgen_h_data
sysgen_h_data += \
"#define " + taskgroup + " 0x%8.8x\n" % group_id
def generate_sysgen_h_taskgroups():
global sysgen_h_data
for group in group_key_list:
generate_taskgroup_line(group, group_dictionary[group])
sysgen_h_data += "\n"
def generate_obj_id_line(name, obj_id):
return "#define " + name + " 0x0001%4.4x\n" % obj_id
def generate_obj_id_lines(obj_types):
data = ""
for obj_type in obj_types:
for obj in obj_type[0]:
data += generate_obj_id_line(str(obj[0]), obj_type[1])
obj_type[1] += 1
if obj_type[1] > 0:
data += "\n"
return data
def generate_sysgen_h_obj_ids():
global sysgen_h_data
mutex_struct = 'k_mutex'
mutex_type = 'struct k_mutex *'
sem_struct = 'k_sem'
sem_type = 'struct k_sem *'
pipe_struct = 'k_pipe'
pipe_type = 'struct k_pipe *'
map_struct = 'k_mem_slab'
map_type = 'struct k_mem_slab *'
fifo_struct = 'k_msgq'
fifo_type = 'struct k_msgq *'
mbox_struct = 'k_mbox'
mbox_type = 'struct k_mbox *'
event_type = 'struct k_alert *'
mem_pool_type = 'struct k_mem_pool'
# add missing object types
# mutex object ids
sysgen_h_data += "\n"
for mutex in mutex_list:
name = mutex[0]
sysgen_h_data += \
"extern struct %s _k_mutex_obj_%s;\n" % (mutex_struct, name)
sysgen_h_data += \
"#define %s ((%s)&_k_mutex_obj_%s)\n\n" % (name, mutex_type, name)
# semaphore object ids
sysgen_h_data += "\n"
for semaphore in sema_list:
name = semaphore[0]
sysgen_h_data += \
"extern struct %s _k_sem_obj_%s;\n" % (sem_struct, name)
sysgen_h_data += \
"#define %s ((%s)&_k_sem_obj_%s)\n\n" % (name, sem_type, name)
# fifo (aka message queue) object ids
sysgen_h_data += "\n"
for fifo in fifo_list:
name = fifo[0]
sysgen_h_data += \
"extern struct %s _k_fifo_obj_%s;\n" % (fifo_struct, name)
sysgen_h_data += \
"#define %s ((%s)&_k_fifo_obj_%s)\n\n" % (name, fifo_type, name)
# mailbox object ids
sysgen_h_data += "\n"
for mbx in mbx_list:
name = mbx[0]
sysgen_h_data += \
"extern struct %s _k_mbox_obj_%s;\n" % (mbox_struct, name)
sysgen_h_data += \
"#define %s ((%s)&_k_mbox_obj_%s)\n\n" % (name, mbox_type, name)
# pipe object id
sysgen_h_data += "\n"
for pipe in pipe_list:
name = pipe[0];
sysgen_h_data += \
"extern struct %s _k_pipe_obj_%s;\n" % (pipe_struct, name)
sysgen_h_data += \
"#define %s ((%s)&_k_pipe_obj_%s)\n\n" % (name, pipe_type, name)
# memory map object id
sysgen_h_data += "\n"
for map in map_list:
name = map[0];
sysgen_h_data += \
"extern struct %s _k_mem_map_obj_%s;\n" % (map_struct, name)
sysgen_h_data += \
"#define %s ((%s)&_k_mem_map_obj_%s)\n" % (name, map_type, name)
# task object id
sysgen_h_data += "\n"
for task in task_list:
name = task[0];
prio = task[1]
entry = task[2]
stack_size = task[3]
if entry == "main":
# Special case: if the MDEF defines a main() thread,
# re-purpose the already existing main_thread for it.
sysgen_h_data += \
"#define MDEF_MAIN_STACK_SIZE %d\n" % stack_size
sysgen_h_data += \
"#define MDEF_MAIN_THREAD_PRIORITY %d\n" % prio
else:
sysgen_h_data += \
"extern char _k_thread_obj_%s[];\n" % (name) + \
"#define %s ((k_tid_t)_k_thread_obj_%s)\n" % (name, name)
# event object ids
sysgen_h_data += "\n"
for event in event_list:
# no need to expose the irq task events
if not (event[0].startswith("_TaskIrqEvt")):
name = event[0];
sysgen_h_data += \
"extern struct k_alert _k_event_obj_%s;\n" % (name)
sysgen_h_data += \
"#define %s (&_k_event_obj_%s)\n\n" % (name, name)
# memory pool object ids
for mem_pool in pool_list:
name = mem_pool[0];
sysgen_h_data += \
"extern %s _k_mem_pool_obj_%s;\n" % (mem_pool_type, name)
sysgen_h_data += \
"#define %s ((%s *)&_k_mem_pool_obj_%s)\n" % (name, mem_pool_type, name)
# all other object ids
sysgen_h_footer_include_guard_str = \
"\n#endif /* " + sysgen_h_include_guard + " */\n"
def generate_sysgen_h_footer():
global sysgen_h_data
sysgen_h_data += \
sysgen_h_footer_include_guard_str
def sysgen_h_generate():
""" Generate sysgen.h file """
generate_sysgen_h_header()
generate_sysgen_h_taskgroups()
generate_sysgen_h_obj_ids()
generate_sysgen_h_footer()
write_file(output_dir + 'sysgen.h', sysgen_h_data)
#
# SYSTEM GENERATOR MAINLINE
#
get_cmdline_args()
mdef_parse()
kernel_main_c_generate()
sysgen_h_generate()
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