diff options
Diffstat (limited to 'scripts/gen-as-const.py')
| -rw-r--r-- | scripts/gen-as-const.py | 60 |
1 files changed, 3 insertions, 57 deletions
diff --git a/scripts/gen-as-const.py b/scripts/gen-as-const.py index eb85ef1..f85e359 100644 --- a/scripts/gen-as-const.py +++ b/scripts/gen-as-const.py @@ -24,68 +24,14 @@ # A line giving just a name implies an expression consisting of just that name. import argparse -import os.path -import re -import subprocess -import tempfile - -def compute_c_consts(sym_data, cc): - """Compute the values of some C constants. - - The first argument is a list whose elements are either strings - (preprocessor directives, or the special string 'START' to - indicate this function should insert its initial boilerplate text - in the output there) or pairs of strings (a name and a C - expression for the corresponding value). Preprocessor directives - in the middle of the list may be used to select which constants - end up being evaluated using which expressions. - - """ - out_lines = [] - for arg in sym_data: - if isinstance(arg, str): - if arg == 'START': - out_lines.append('void\ndummy (void)\n{') - else: - out_lines.append(arg) - continue - name = arg[0] - value = arg[1] - out_lines.append('asm ("@@@name@@@%s@@@value@@@%%0@@@end@@@" ' - ': : \"i\" ((long int) (%s)));' - % (name, value)) - out_lines.append('}') - out_lines.append('') - out_text = '\n'.join(out_lines) - with tempfile.TemporaryDirectory() as temp_dir: - c_file_name = os.path.join(temp_dir, 'test.c') - s_file_name = os.path.join(temp_dir, 'test.s') - with open(c_file_name, 'w') as c_file: - c_file.write(out_text) - # Compilation has to be from stdin to avoid the temporary file - # name being written into the generated dependencies. - cmd = ('%s -S -o %s -x c - < %s' % (cc, s_file_name, c_file_name)) - subprocess.check_call(cmd, shell=True) - consts = {} - with open(s_file_name, 'r') as s_file: - for line in s_file: - match = re.search('@@@name@@@([^@]*)' - '@@@value@@@[^0-9Xxa-fA-F-]*' - '([0-9Xxa-fA-F-]+).*@@@end@@@', line) - if match: - if (match.group(1) in consts - and match.group(2) != consts[match.group(1)]): - raise ValueError('duplicate constant %s' - % match.group(1)) - consts[match.group(1)] = match.group(2) - return consts +import glibcextract def gen_test(sym_data): """Generate a test for the values of some C constants. - The first argument is as for compute_c_consts. + The first argument is as for glibcextract.compute_c_consts. """ out_lines = [] @@ -158,7 +104,7 @@ def main(): if args.test: print(gen_test(sym_data)) else: - consts = compute_c_consts(sym_data, args.cc) + consts = glibcextract.compute_c_consts(sym_data, args.cc) print(''.join('#define %s %s\n' % c for c in sorted(consts.items())), end='') if __name__ == '__main__': |