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#!/usr/bin/python
# -*- coding: utf-8 -*-
#
# Copyright (c) 2011, Denis Steckelmacher <steckdenis@yahoo.fr>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of the copyright holder nor the
# names of its contributors may be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# builtins.py <def> <outdir>
import sys
class Function:
class Arg:
def __init__(self, name, t):
self.name = name
self.t = t
KIND_BUILTINS_IMPL = 0 # static function in builtins.cpp
KIND_BUILTINS_DEF = 1 # if (name == '__cpu_$name') return (void *)&name;
KIND_STDLIB_IMPL = 2 # OpenCL C function in stdlib.c
KIND_STDLIB_DEF = 3 # Header in stdlib.h
KIND_STDLIB_STUB = 4 # OpenCL C stub in stdlib.c: calls __cpu_$name
KIND_STDLIB_STUB_DEF = 5 # __cpu_$name declared in stdlib.c
def __init__(self, name, native):
self.name = name
self.native = native
self.args = [] # Array <Arg>
self.types = [] # Array <str>
self.return_type = ''
self.body = ''
def set_return_type(self, ty):
self.return_type = ty
def append_body(self, body):
self.body += body
def add_arg(self, name, ty):
self.args.append(self.Arg(name, ty))
def add_type(self, ty):
self.types.append(ty)
def mangled_name(self, current_type):
return_type = self.return_type
if return_type == '$type':
return_type = current_type
rs = return_type + '_' + self.name
first = True
for a in self.args:
if first:
rs += '_'
first = False
arg_type = a.t
if arg_type == '$type':
arg_type = current_type
rs += arg_type
return rs
def arg_list(self, current_type, handle_first_arg):
rs = ''
first = True
append_arg = None
# We may need a first "result" arg
if handle_first_arg:
return_type = self.return_type
if return_type == '$type':
return_type = current_type
if return_type[-1].isdigit():
# Return is a vector
append_arg = self.Arg('result', return_type)
if append_arg:
args = [append_arg]
args.extend(self.args)
else:
args = self.args
for arg in args:
# Resolve type
arg_type = arg.t
if arg_type == '$type':
arg_type = current_type
# We need to pass vector arguments as pointers
arg_vector = False
if handle_first_arg:
arg_vector = arg_type[-1].isdigit()
arg_type = arg_type.rstrip('0123456789')
# Build the string
if not first:
rs += ', '
first = False
rs += arg_type + ' '
if arg_vector:
rs += '*'
rs += arg.name
return rs
def write(self, current_type, kind):
# Template:
# (static) $ret_type $name($args) {
# $body
# }
rs = ''
if kind == self.KIND_BUILTINS_IMPL:
rs = 'static '
elif kind == self.KIND_BUILTINS_DEF:
rs += ' else if (name == "__cpu_' + self.mangled_name(current_type) + '")\n'
rs += ' return (void *)&' + self.mangled_name(current_type) + ';\n'
return rs
# Calculate return type
return_type = self.return_type
if return_type == '$type':
return_type = current_type
if (kind == self.KIND_BUILTINS_IMPL or kind == self.KIND_STDLIB_STUB_DEF) \
and return_type[-1].isdigit():
return_type = 'void' # We'll use a 'result' argument
rs += return_type + ' '
# Append mangled name if needed
if kind == self.KIND_BUILTINS_IMPL:
rs += self.mangled_name(current_type)
elif kind == self.KIND_STDLIB_STUB_DEF:
rs += '__cpu_' + self.mangled_name(current_type)
else:
# No need to mangle the name, but add OVERLOAD
rs += 'OVERLOAD ' + self.name
# Print function args
rs += '('
rs += self.arg_list(current_type, kind == self.KIND_BUILTINS_IMPL or \
kind == self.KIND_STDLIB_STUB_DEF)
rs += ')'
# If only a declaration, end it
if kind == self.KIND_STDLIB_DEF or kind == self.KIND_STDLIB_STUB_DEF:
rs += ';\n'
return rs
# Add the body
rs += '\n{\n'
if kind == self.KIND_STDLIB_STUB:
# Special body : call __cpu_$name
return_is_vector = return_type[-1].isdigit()
if return_is_vector:
# Need to create a temporary
rs += ' ' + return_type + ' result;\n'
rs += '\n'
# Call the cpu stub
rs += ' '
if not return_is_vector:
rs += 'return '
rs += '__cpu_' + self.mangled_name(current_type) + '('
# Pass the result if needed
first = True
if return_is_vector:
rs += '(' + return_type.rstrip('0123456789') + ' *)&result'
first = False
# Append the args
for arg in self.args:
# Resolve type
arg_type = arg.t
if arg_type == '$type':
arg_type = current_type
arg_vector = arg_type[-1].isdigit()
if not first:
rs += ', '
first = False
# We need to pass vector arguments as pointers
if arg_vector:
rs += '(' + arg_type.rstrip('0123456789') + ' *)&' + arg.name
else:
rs += arg.name
# End the call
rs += ');\n'
if return_is_vector:
rs += '\n return result;\n'
rs += '}\n\n'
else:
# Simply copy the body
vecdim = '1'
if current_type[-1].isdigit():
if current_type[-2].isdigit():
vecdim = current_type[-2:]
else:
vecdim = current_type[-1]
rs += self.body.replace('$type', current_type) \
.replace('$vecdim', vecdim)
rs += '\n}\n\n'
return rs
class Generator:
builtins_impl_file = 'builtins_impl.h' # static functions
builtins_def_file = 'builtins_def.h' # if () in getBuiltin
stdlib_impl_file = 'stdlib_impl.h' # stdlib.c functions
stdlib_def_file = 'stdlib_def.h' # stdlib.h definitions
def __init__(self, out_path):
self.out_path = out_path
# Buffers
self.builtins_impl_buffer = ''
self.builtins_def_buffer = ''
self.stdlib_impl_buffer = ''
self.stdlib_def_buffer = ''
def add_function(self, function):
for t in function.types:
if function.native:
self.stdlib_impl_buffer += function.write(t, function.KIND_STDLIB_STUB_DEF)
self.stdlib_impl_buffer += function.write(t, function.KIND_STDLIB_STUB)
self.stdlib_def_buffer += function.write(t, function.KIND_STDLIB_DEF)
self.builtins_impl_buffer += function.write(t, function.KIND_BUILTINS_IMPL)
self.builtins_def_buffer += function.write(t, function.KIND_BUILTINS_DEF)
else:
self.stdlib_def_buffer += function.write(t, function.KIND_STDLIB_DEF)
self.stdlib_impl_buffer += function.write(t, function.KIND_STDLIB_IMPL)
def write(self):
of = open(self.out_path + '/' + self.stdlib_def_file, 'w')
of.write(self.stdlib_def_buffer)
of.close()
of = open(self.out_path + '/' + self.stdlib_impl_file, 'w')
of.write(self.stdlib_impl_buffer)
of.close()
of = open(self.out_path + '/' + self.builtins_def_file, 'w')
of.write(self.builtins_def_buffer)
of.close()
of = open(self.out_path + '/' + self.builtins_impl_file, 'w')
of.write(self.builtins_impl_buffer)
of.close()
class Parser:
def __init__(self, generator, def_file_name):
self.generator = generator
self.def_file_name = def_file_name
self.defs = {}
def replace_variable(self, token):
result = []
if token[0] == '$':
for tok in self.defs[token[1:]]:
result.extend(self.replace_variable(tok))
else:
result.append(token)
return result
def parse(self):
def_file = open(self.def_file_name, 'rb')
current_function = None
for line in def_file:
if current_function:
# End if we encounter an end
if line.startswith('end'):
self.generator.add_function(current_function)
current_function = None
else:
# Add a line to the body
current_function.append_body(line)
else:
line = line.strip()
tokens = line.split(' ')
tok = tokens[0]
if tok == 'def':
# A definition : def <variable> : [values]
name = tokens[1]
values = []
for token in tokens[3:]:
values.extend(self.replace_variable(token))
self.defs[name] = values
elif tok == 'func' or tok == 'native':
# Function : func|native <ret_type> <name> [types] : [args]
current_function = Function(tokens[2], \
tokens[0] == 'native')
current_function.set_return_type(tokens[1])
# Explore the types and args
in_types = True
for token in tokens[3:]:
if token == ':':
in_types = False
elif in_types:
for ty in self.replace_variable(token):
current_function.add_type(ty)
else:
# Parameters
parts = token.split(':')
current_function.add_arg(parts[0], parts[1])
def_file.close()
if __name__ == '__main__':
def_file = sys.argv[1]
out_dir = sys.argv[2]
gen = Generator(out_dir)
parser = Parser(gen, def_file)
parser.parse()
gen.write()
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