diff options
Diffstat (limited to 'scripts/mbedtls_dev/c_build_helper.py')
| -rw-r--r-- | scripts/mbedtls_dev/c_build_helper.py | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/scripts/mbedtls_dev/c_build_helper.py b/scripts/mbedtls_dev/c_build_helper.py deleted file mode 100644 index f2cbbe4af7e..00000000000 --- a/scripts/mbedtls_dev/c_build_helper.py +++ /dev/null @@ -1,162 +0,0 @@ -"""Generate and run C code. -""" - -# Copyright The Mbed TLS Contributors -# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later -# - -import os -import platform -import subprocess -import sys -import tempfile - -def remove_file_if_exists(filename): - """Remove the specified file, ignoring errors.""" - if not filename: - return - try: - os.remove(filename) - except OSError: - pass - -def create_c_file(file_label): - """Create a temporary C file. - - * ``file_label``: a string that will be included in the file name. - - Return ```(c_file, c_name, exe_name)``` where ``c_file`` is a Python - stream open for writing to the file, ``c_name`` is the name of the file - and ``exe_name`` is the name of the executable that will be produced - by compiling the file. - """ - c_fd, c_name = tempfile.mkstemp(prefix='tmp-{}-'.format(file_label), - suffix='.c') - exe_suffix = '.exe' if platform.system() == 'Windows' else '' - exe_name = c_name[:-2] + exe_suffix - remove_file_if_exists(exe_name) - c_file = os.fdopen(c_fd, 'w', encoding='ascii') - return c_file, c_name, exe_name - -def generate_c_printf_expressions(c_file, cast_to, printf_format, expressions): - """Generate C instructions to print the value of ``expressions``. - - Write the code with ``c_file``'s ``write`` method. - - Each expression is cast to the type ``cast_to`` and printed with the - printf format ``printf_format``. - """ - for expr in expressions: - c_file.write(' printf("{}\\n", ({}) {});\n' - .format(printf_format, cast_to, expr)) - -def generate_c_file(c_file, - caller, header, - main_generator): - """Generate a temporary C source file. - - * ``c_file`` is an open stream on the C source file. - * ``caller``: an informational string written in a comment at the top - of the file. - * ``header``: extra code to insert before any function in the generated - C file. - * ``main_generator``: a function called with ``c_file`` as its sole argument - to generate the body of the ``main()`` function. - """ - c_file.write('/* Generated by {} */' - .format(caller)) - c_file.write(''' -#include <stdio.h> -''') - c_file.write(header) - c_file.write(''' -int main(void) -{ -''') - main_generator(c_file) - c_file.write(''' return 0; -} -''') - -def compile_c_file(c_filename, exe_filename, include_dirs): - """Compile a C source file with the host compiler. - - * ``c_filename``: the name of the source file to compile. - * ``exe_filename``: the name for the executable to be created. - * ``include_dirs``: a list of paths to include directories to be passed - with the -I switch. - """ - # Respect $HOSTCC if it is set - cc = os.getenv('HOSTCC', None) - if cc is None: - cc = os.getenv('CC', 'cc') - cmd = [cc] - - proc = subprocess.Popen(cmd, - stdout=subprocess.DEVNULL, - stderr=subprocess.PIPE, - universal_newlines=True) - cc_is_msvc = 'Microsoft (R) C/C++' in proc.communicate()[1] - - cmd += ['-I' + dir for dir in include_dirs] - if cc_is_msvc: - # MSVC has deprecated using -o to specify the output file, - # and produces an object file in the working directory by default. - obj_filename = exe_filename[:-4] + '.obj' - cmd += ['-Fe' + exe_filename, '-Fo' + obj_filename] - else: - cmd += ['-o' + exe_filename] - - subprocess.check_call(cmd + [c_filename]) - -def get_c_expression_values( - cast_to, printf_format, - expressions, - caller=__name__, file_label='', - header='', include_path=None, - keep_c=False, -): # pylint: disable=too-many-arguments, too-many-locals - """Generate and run a program to print out numerical values for expressions. - - * ``cast_to``: a C type. - * ``printf_format``: a printf format suitable for the type ``cast_to``. - * ``header``: extra code to insert before any function in the generated - C file. - * ``expressions``: a list of C language expressions that have the type - ``cast_to``. - * ``include_path``: a list of directories containing header files. - * ``keep_c``: if true, keep the temporary C file (presumably for debugging - purposes). - - Use the C compiler specified by the ``CC`` environment variable, defaulting - to ``cc``. If ``CC`` looks like MSVC, use its command line syntax, - otherwise assume the compiler supports Unix traditional ``-I`` and ``-o``. - - Return the list of values of the ``expressions``. - """ - if include_path is None: - include_path = [] - c_name = None - exe_name = None - obj_name = None - try: - c_file, c_name, exe_name = create_c_file(file_label) - generate_c_file( - c_file, caller, header, - lambda c_file: generate_c_printf_expressions(c_file, - cast_to, printf_format, - expressions) - ) - c_file.close() - - compile_c_file(c_name, exe_name, include_path) - if keep_c: - sys.stderr.write('List of {} tests kept at {}\n' - .format(caller, c_name)) - else: - os.remove(c_name) - output = subprocess.check_output([exe_name]) - return output.decode('ascii').strip().split('\n') - finally: - remove_file_if_exists(exe_name) - remove_file_if_exists(obj_name) |