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| author | jaseg <git-bigdata-wsl-arch@jaseg.de> | 2020-10-12 20:15:41 +0200 |
|---|---|---|
| committer | jaseg <git-bigdata-wsl-arch@jaseg.de> | 2020-10-12 20:15:41 +0200 |
| commit | e16ec19e3a445c1156c990ed71628fb183332be9 (patch) | |
| tree | af95b48f15f35665342f5aba76625df3849927d2 /tools | |
| download | fenris-master.tar.gz fenris-master.tar.bz2 fenris-master.zip | |
Diffstat (limited to 'tools')
24 files changed, 2090 insertions, 0 deletions
diff --git a/tools/__pycache__/dsss_demod_test_waveform_gen.cpython-38.pyc b/tools/__pycache__/dsss_demod_test_waveform_gen.cpython-38.pyc Binary files differnew file mode 100644 index 0000000..1512990 --- /dev/null +++ b/tools/__pycache__/dsss_demod_test_waveform_gen.cpython-38.pyc diff --git a/tools/__pycache__/presig_gen.cpython-38.pyc b/tools/__pycache__/presig_gen.cpython-38.pyc Binary files differnew file mode 100644 index 0000000..b28b1a9 --- /dev/null +++ b/tools/__pycache__/presig_gen.cpython-38.pyc diff --git a/tools/butter_filter_gen.py b/tools/butter_filter_gen.py new file mode 100644 index 0000000..0bb81bc --- /dev/null +++ b/tools/butter_filter_gen.py @@ -0,0 +1,93 @@ +#!/usr/bin/env python3 + +import math +import sys +import contextlib + +import scipy.signal as sig +import numpy as np + + +@contextlib.contextmanager +def wrap(left='{', right='}', file=None, end=''): + print(left, file=file, end=end) + yield + print(right, file=file, end=end) + +@contextlib.contextmanager +def print_include_guards(macro_name): + print(f'#ifndef {macro_name}') + print(f'#define {macro_name}') + print() + yield + print() + print(f'#endif /* {macro_name} */') + +macro_float = lambda f: f'{f}'.replace('.', 'F').replace('-', 'N').replace('+', 'P') + +ordinal = lambda n: "%d%s" % (n,"tsnrhtdd"[(n//10%10!=1)*(n%10<4)*n%10::4]) + +SI_TABLE = {-18: 'a', -15: 'f', -12: 'p', -9: 'n', -6: 'µ', -3: 'm', 0: '', 3: 'k', 6: 'M', 9: 'G', 12: 'T', 15: 'P', 18: 'E'} +def siprefix(x, space=' ', unit=''): + l = math.log10(x)//3*3 + if l in SI_TABLE: + return f'{x/10**l}{space}{SI_TABLE[l]}{unit}' + return f'{x}{space}{unit}' + +if __name__ == '__main__': + import argparse + parser = argparse.ArgumentParser() + parser.add_argument('-m', '--macro-name', default='butter_filter', help='Prefix for output macro names') + parser.add_argument('fc', type=float, help='Corner frequency [Hz]') + parser.add_argument('fs', type=float, help='Sampling rate [Hz]') + parser.add_argument('n', type=int, nargs='?', default=6, help='Filter order') + args = parser.parse_args() + + sos = sig.butter(args.n, args.fc, fs=args.fs, output='sos') + + print('/* THIS IS A GENERATED FILE. DO NOT EDIT! */') + print() + with print_include_guards(f'__BUTTER_FILTER_GENERATED_{args.n}_{macro_float(args.fc)}_{macro_float(args.fs)}__'): + + print(f'/* {ordinal(args.n)} order Butterworth IIR filter coefficients') + print(f' *') + print(f' * corner frequency f_c = {siprefix(args.fc)}Hz') + print(f' * sampling rate f_s = {siprefix(args.fs)}Hz') + print(f' */') + print() + print(f'#define {args.macro_name.upper()}_ORDER {args.n}') + print(f'#define {args.macro_name.upper()}_CLEN {(args.n+1)//2}') + + # scipy.signal.butter by default returns extremely small bs for the first biquad and large ones for subsequent + # sections. Balance magnitudes to reduce possible rounding errors. + first_biquad_bs = sos[0][:3] + approx_mag = round(math.log10(np.mean(first_biquad_bs))) + mags = [approx_mag // len(sos)] * len(sos) + mags[0] += approx_mag - sum(mags) + sos[0][:3] /= 10**approx_mag + sos = np.array([ sec * np.array([10**mag, 10**mag, 10**mag, 1, 1, 1]) for mag, sec in zip(mags, sos) ]) + + ones = np.ones([100000]) + _, steady_state = sig.sosfilt(sos, ones, zi=np.zeros([(args.n+1)//2, 2])) + + print(f'#define {args.macro_name.upper()}_COEFF ', end='') + for sec in sos: + bs, ases = sec[:3], sec[4:6] + + with wrap(): + print('.b=', end='') + with wrap(): + print(', '.join(f'{v}' for v in bs), end='') + print(', .a=', end='') + with wrap(): + print(', '.join(f'{v}' for v in ases), end='') + print(', ', end='') + print() + + print(f'#define {args.macro_name.upper()}_STEADY_STATE ', end='') + for sec in steady_state: + with wrap(): + print(', '.join(f'{v}' for v in sec), end='') + print(', ', end='') + print() + diff --git a/tools/crypto_test.c b/tools/crypto_test.c new file mode 100644 index 0000000..410fac2 --- /dev/null +++ b/tools/crypto_test.c @@ -0,0 +1,46 @@ + +#include <stdint.h> +#include <math.h> +#include <unistd.h> +#include <stdio.h> +#include <string.h> +#include <errno.h> +#include <stdlib.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <sys/fcntl.h> + +#include "crypto.h" + +void oob_trigger_activated(enum trigger_domain domain, int serial) { + printf("oob_trigger_activated(%d, %d)\n", domain, serial); + fflush(stdout); +} + +void print_usage() { + fprintf(stderr, "Usage: crypto_test [auth_key_hex]\n"); +} + +int main(int argc, char **argv) { + if (argc != 2) { + fprintf(stderr, "Error: Invalid arguments.\n"); + print_usage(); + return 1; + } + + uint8_t auth_key[16]; + + for (size_t i=0; argv[1][i+0] != '\0' && argv[1][i+1] != '\0' && i/2<sizeof(auth_key); i+= 2) { + char buf[3] = { argv[1][i+0], argv[1][i+1], 0}; + char *endptr; + auth_key[i/2] = strtoul(buf, &endptr, 16); + if (!endptr || *endptr != '\0') { + fprintf(stderr, "Invalid authkey\n"); + return 1; + } + } + + printf("rc=%d\n", oob_message_received(auth_key)); + + return 0; +} diff --git a/tools/crypto_test_runner.py b/tools/crypto_test_runner.py new file mode 100644 index 0000000..34c8b59 --- /dev/null +++ b/tools/crypto_test_runner.py @@ -0,0 +1,46 @@ +#!/usr/bin/env python3 +import subprocess +from os import path +import binascii +import re + +import presig_gen + +def do_test(domain, value, height, root_key, binary, expect_fail=False): + auth = presig_gen.gen_at_height(domain, value, height, root_key) + auth = binascii.hexlify(auth).decode() + + output = subprocess.check_output([binary, auth]) + *lines, rc_line = output.decode().splitlines() + rc = int(re.match('^rc=(\d+)$', rc_line).group(1)) + assert expect_fail == (rc == 0) + +def run_tests(root_key, max_height, binary): + for domain, value in { + 'all': 'all', + 'vendor': presig_gen.TEST_VENDOR, + 'series': presig_gen.TEST_SERIES, + 'country': presig_gen.TEST_COUNTRY, + 'region': presig_gen.TEST_REGION, + }.items(): + for height in range(max_height): + do_test(domain, value, height, root_key, binary) + do_test(domain, 'fail', height, root_key, binary, expect_fail=True) + do_test('fail', 'fail', height, root_key, binary, expect_fail=True) + do_test('', '', height, root_key, binary, expect_fail=True) + do_test(domain, value, max_height, root_key, binary, expect_fail=True) + do_test(domain, value, max_height+1, root_key, binary, expect_fail=True) + +if __name__ == '__main__': + import argparse + parser = argparse.ArgumentParser() + parser.add_argument('keyfile', help='Root key file') + parser.add_argument('max_height', type=int, default=8, nargs='?', help='Height of generated prekeys') + default_binary = path.abspath(path.join(path.dirname(__file__), '../build/tools/crypto_test')) + parser.add_argument('binary', default=default_binary, nargs='?', help='crypto_test binary to use') + args = parser.parse_args() + + with open(args.keyfile, 'r') as f: + root_key = binascii.unhexlify(f.read().strip()) + + run_tests(root_key, args.max_height, args.binary) diff --git a/tools/cwt_wavelet_header_gen.py b/tools/cwt_wavelet_header_gen.py new file mode 100644 index 0000000..8be785b --- /dev/null +++ b/tools/cwt_wavelet_header_gen.py @@ -0,0 +1,29 @@ +#!/usr/bin/env python3 + +import textwrap + +import scipy.signal as sig +import numpy as np + +if __name__ == '__main__': + import argparse + parser = argparse.ArgumentParser() + parser.add_argument('n', type=int, help='Window size') + parser.add_argument('w', type=float, help='Wavelet width') + parser.add_argument('-v', '--variable', default='cwt_ricker_table', help='Name for alias variable pointing to generated wavelet LUT') + args = parser.parse_args() + + print(f'/* CWT Ricker wavelet LUT for {args.n} sample window of width {args.w}. */') + varname = f'cwt_ricker_{args.n}_window_{str(args.w).replace(".", "F")}' + print(f'const float {varname}[{args.n}] = {{') + + win = sig.ricker(args.n, args.w) + par = ' '.join(f'{f:>015.12e}f,' for f in win) + print(textwrap.fill(par, + initial_indent=' '*4, subsequent_indent=' '*4, + width=120, + replace_whitespace=False, drop_whitespace=False)) + print('};') + print() + print(f'const float * const {args.variable} __attribute__((weak)) = {varname};') + diff --git a/tools/dsss_demod_test.c b/tools/dsss_demod_test.c new file mode 100644 index 0000000..f7df111 --- /dev/null +++ b/tools/dsss_demod_test.c @@ -0,0 +1,109 @@ + +#include <stdint.h> +#include <math.h> +#include <unistd.h> +#include <stdio.h> +#include <string.h> +#include <errno.h> +#include <stdlib.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <sys/fcntl.h> + +#include "dsss_demod.h" + +void handle_dsss_received(symbol_t data[static TRANSMISSION_SYMBOLS]) { + printf("data sequence received: [ "); + for (size_t i=0; i<TRANSMISSION_SYMBOLS; i++) { + //printf("%+3d", ((data[i]&1) ? 1 : -1) * (data[i]>>1)); + printf("%2d", data[i]); + if (i+1 < TRANSMISSION_SYMBOLS) + printf(", "); + } + printf(" ]\n"); +} + +void print_usage() { + fprintf(stderr, "Usage: dsss_demod_test [test_data.bin] [optional recording channel number]\n"); +} + +int main(int argc, char **argv) { + if (argc != 2 && argc != 3) { + fprintf(stderr, "Error: Invalid arguments.\n"); + print_usage(); + return 1; + } + + int fd = open(argv[1], O_RDONLY); + struct stat st; + if (fstat(fd, &st)) { + fprintf(stderr, "Error querying test data file size: %s\n", strerror(errno)); + return 2; + } + + if (st.st_size < 0 || st.st_size > 10000000) { + fprintf(stderr, "Error reading test data: too much test data (size=%zd)\n", st.st_size); + return 2; + } + + if (st.st_size % sizeof(float) != 0) { + fprintf(stderr, "Error reading test data: file size is not divisible by %zd (size=%zd)\n", sizeof(float), st.st_size); + return 2; + } + + char *buf = malloc(st.st_size); + if (!buf) { + fprintf(stderr, "Error allocating memory"); + return 2; + } + + int record_channel = -1; + if (argc == 3) { + char *endptr; + record_channel = strtoul(argv[2], &endptr, 10); + if (!endptr || *endptr != '\0') { + fprintf(stderr, "Invalid channel number \"%s\"\n", argv[2]); + return 1; + } + } + + if (record_channel != -1) + fprintf(stderr, "Reading %zd samples test data...", st.st_size/sizeof(float)); + ssize_t nread = 0; + while (nread < st.st_size) { + ssize_t rc = read(fd, buf + nread, st.st_size - nread); + + if (rc == -EINTR || rc == -EAGAIN) + continue; + + if (rc < 0) { + fprintf(stderr, "\nError reading test data: %s\n", strerror(errno)); + return 2; + } + + if (rc == 0) { + fprintf(stderr, "\nError reading test data: Unexpected end of file\n"); + return 2; + } + + nread += rc; + } + if (record_channel != -1) + fprintf(stderr, " done.\n"); + + const size_t n_samples = st.st_size / sizeof(float); + float *buf_f = (float *)buf; + + if (record_channel != -1) + fprintf(stderr, "Starting simulation.\n"); + + struct dsss_demod_state demod; + dsss_demod_init(&demod); + for (size_t i=0; i<n_samples; i++) { + //fprintf(stderr, "Iteration %zd/%zd\n", i, n_samples); + dsss_demod_step(&demod, buf_f[i], i); + } + + free(buf); + return 0; +} diff --git a/tools/dsss_demod_test_runner.py b/tools/dsss_demod_test_runner.py new file mode 100644 index 0000000..d3c3cfc --- /dev/null +++ b/tools/dsss_demod_test_runner.py @@ -0,0 +1,241 @@ +#!/usr/bin/env python3 + +import os +import sys +from os import path +import subprocess +import json +from collections import namedtuple, defaultdict +from tqdm import tqdm +import uuid +import multiprocessing +import sqlite3 +import time +from urllib.parse import urlparse +import tempfile +import itertools + +import numpy as np +np.set_printoptions(linewidth=240) + +from dsss_demod_test_waveform_gen import load_noise_gen, modulate as dsss_modulate + + +def build_test_binary(nbits, thf, decimation, symbols, cachedir): + build_id = str(uuid.uuid4()) + builddir = path.join(cachedir, build_id) + os.mkdir(builddir) + + cwd = path.join(path.dirname(__file__), '..') + + env = os.environ.copy() + env['BUILDDIR'] = path.abspath(builddir) + env['DSSS_GOLD_CODE_NBITS'] = str(nbits) + env['DSSS_DECIMATION'] = str(decimation) + env['DSSS_THRESHOLD_FACTOR'] = str(thf) + env['DSSS_WAVELET_WIDTH'] = str(0.73 * decimation) + env['DSSS_WAVELET_LUT_SIZE'] = str(10 * decimation) + env['TRANSMISSION_SYMBOLS'] = str(symbols) + + with open(path.join(builddir, 'make_stdout.txt'), 'w') as stdout,\ + open(path.join(builddir, 'make_stderr.txt'), 'w') as stderr: + subprocess.run(['make', 'clean', os.path.abspath(path.join(builddir, 'tools/dsss_demod_test'))], + env=env, cwd=cwd, check=True, stdout=stdout, stderr=stderr) + + return build_id + +def sequence_matcher(test_data, decoded, max_shift=3): + match_result = [] + for shift in range(-max_shift, max_shift): + failures = -shift if shift < 0 else 0 # we're skipping the first $shift symbols + a = test_data if shift > 0 else test_data[-shift:] + b = decoded if shift < 0 else decoded[shift:] + for i, (ref, found) in enumerate(itertools.zip_longest(a, b)): + if ref is None: # end of signal + break + if ref != found: + failures += 1 + match_result.append(failures) + failures = min(match_result) + return failures/len(test_data) + +ResultParams = namedtuple('ResultParams', ['nbits', 'thf', 'decimation', 'symbols', 'seed', 'amplitude', 'background']) + +def run_test(seed, amplitude_spec, background, nbits, decimation, symbols, thfs, lookup_binary, cachedir): + noise_gen, noise_params = load_noise_gen(background) + + test_data = np.random.RandomState(seed=seed).randint(0, 2 * (2**nbits), symbols) + + signal = np.repeat(dsss_modulate(test_data, nbits) * 2.0 - 1, decimation) + # We're re-using the seed here. This is not a problem. + noise = noise_gen(seed, len(signal), *noise_params) + amplitudes = amplitude_spec[0] * 10 ** np.linspace(0, amplitude_spec[1], amplitude_spec[2]) + # DEBUG + my_pid = multiprocessing.current_process().pid + wql = len(amplitudes) * len(thfs) + print(f'[{my_pid}] starting, got workqueue of length {wql}') + i = 0 + # Map lsb to sign to match test program + # test_data = (test_data>>1) * (2*(test_data&1) - 1) + # END DEBUG + + output = [] + for amp in amplitudes: + with tempfile.NamedTemporaryFile(dir=cachedir) as f: + waveform = signal*amp + noise + f.write(waveform.astype('float32').tobytes()) + f.flush() + # DEBUG + fcopy = f'/tmp/test-{path.basename(f.name)}' + import shutil + shutil.copy(f.name, fcopy) + # END DEBUG + + for thf in thfs: + rpars = ResultParams(nbits, thf, decimation, symbols, seed, amp, background) + cmdline = [lookup_binary(nbits, thf, decimation, symbols), f.name] + # DEBUG + starttime = time.time() + # END DEBUG + try: + proc = subprocess.run(cmdline, stdout=subprocess.PIPE, encoding='utf-8', check=True, timeout=300) + + lines = proc.stdout.splitlines() + matched = [ l.partition('[')[2].partition(']')[0] + for l in lines if l.strip().startswith('data sequence received:') ] + matched = [ [ int(elem) for elem in l.split(',') ] for l in matched ] + + ser = min(sequence_matcher(test_data, match) for match in matched) if matched else None + output.append((rpars, ser)) + # DEBUG + #print(f'[{my_pid}] ran {i}/{wql}: time={time.time() - starttime}\n {ser=}\n {rpars}\n {" ".join(cmdline)}\n {fcopy}', flush=True) + i += 1 + # END DEBUG + + except subprocess.TimeoutExpired: + output.append((rpars, None)) + # DEBUG + print(f'[{my_pid}] ran {i}/{wql}: Timeout!\n {rpars}\n {" ".join(cmdline)}\n {fcopy}', flush=True) + i += 1 + # END DEBUG + print(f'[{my_pid}] finished.') + return output + +def parallel_generator(db, table, columns, builder, param_list, desc, context={}, params_mapper=lambda *args: args, + disable_cache=False): + with multiprocessing.Pool(multiprocessing.cpu_count()) as pool: + with db as conn: + jobs = [] + for params in param_list: + found_res = conn.execute( + f'SELECT result FROM {table} WHERE ({",".join(columns)}) = ({",".join("?"*len(columns))})', + params_mapper(*params)).fetchone() + + if found_res and not disable_cache: + yield params, json.loads(*found_res) + + else: + jobs.append((params, pool.apply_async(builder, params, context))) + + pool.close() + print('Using', len(param_list) - len(jobs), 'cached jobs', flush=True) + with tqdm(total=len(jobs), desc=desc) as tq: + for i, (params, res) in enumerate(jobs): + # DEBUG + print('Got result', i, params, res) + # END DEBUG + tq.update(1) + result = res.get() + with db as conn: + conn.execute(f'INSERT INTO {table} VALUES ({"?,"*len(params)}?,?)', + (*params_mapper(*params), json.dumps(result), timestamp())) + yield params, result + pool.join() + +if __name__ == '__main__': + import argparse + parser = argparse.ArgumentParser() + parser.add_argument('-d', '--dump', help='Write results to JSON file') + parser.add_argument('-c', '--cachedir', default='dsss_test_cache', help='Directory to store build output and data in') + parser.add_argument('-n', '--no-cache', action='store_true', help='Disable result cache') + parser.add_argument('-b', '--batches', type=int, default=1, help='Number of batches to split the computation into') + parser.add_argument('-i', '--index', type=int, default=0, help='Batch index to compute') + parser.add_argument('-p', '--prepare', action='store_true', help='Prepare mode: compile runners, then exit.') + args = parser.parse_args() + + DecoderParams = namedtuple('DecoderParams', ['nbits', 'thf', 'decimation', 'symbols']) +# dec_paramses = [ DecoderParams(nbits=nbits, thf=thf, decimation=decimation, symbols=20) +# for nbits in [5, 6] +# for thf in [4.5, 4.0, 5.0] +# for decimation in [10, 5, 22] ] + dec_paramses = [ DecoderParams(nbits=nbits, thf=thf, decimation=decimation, symbols=100) + for nbits in [5, 6] + for thf in [3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10.0] + for decimation in [1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 16, 22, 30, 40, 50] ] +# dec_paramses = [ DecoderParams(nbits=nbits, thf=thf, decimation=decimation, symbols=100) +# for nbits in [5, 6, 7, 8] +# for thf in [1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10.0] +# for decimation in [1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 16, 22, 30, 40, 50] ] + + build_cache_dir = path.join(args.cachedir, 'builds') + data_cache_dir = path.join(args.cachedir, 'data') + os.makedirs(build_cache_dir, exist_ok=True) + os.makedirs(data_cache_dir, exist_ok=True) + + build_db = sqlite3.connect(path.join(args.cachedir, 'build_db.sqlite3')) + build_db.execute('CREATE TABLE IF NOT EXISTS builds (nbits, thf, decimation, symbols, result, timestamp)') + timestamp = lambda: int(time.time()*1000) + + builds = dict(parallel_generator(build_db, table='builds', columns=['nbits', 'thf', 'decimation', 'symbols'], + builder=build_test_binary, param_list=dec_paramses, desc='Building decoders', + context=dict(cachedir=build_cache_dir))) + print('Done building decoders.') + if args.prepare: + sys.exit(0) + + GeneratorParams = namedtuple('GeneratorParams', ['seed', 'amplitude_spec', 'background']) + gen_params = [ GeneratorParams(rep, (5e-3, 1, 5), background) + #GeneratorParams(rep, (0.05e-3, 3.5, 50), background) + for rep in range(50) + for background in ['meas://fmeas_export_ocxo_2day.bin', 'synth://grid_freq_psd_spl_108pt.json'] ] +# gen_params = [ GeneratorParams(rep, (5e-3, 1, 5), background) +# for rep in range(1) +# for background in ['meas://fmeas_export_ocxo_2day.bin'] ] + + data_db = sqlite3.connect(path.join(args.cachedir, 'data_db.sqlite3')) + data_db.execute('CREATE TABLE IF NOT EXISTS waveforms' + '(seed, amplitude_spec, background, nbits, decimation, symbols, thresholds, result, timestamp)') + + 'SELECT FROM waveforms GROUP BY (amplitude_spec, background, nbits, decimation, symbols, thresholds, result)' + + dec_param_groups = defaultdict(lambda: []) + for nbits, thf, decimation, symbols in dec_paramses: + dec_param_groups[(nbits, decimation, symbols)].append(thf) + waveform_params = [ (*gp, *dp, thfs) for gp in gen_params for dp, thfs in dec_param_groups.items() ] + print(f'Generated {len(waveform_params)} parameter sets') + + # Separate out our batch + waveform_params = waveform_params[args.index::args.batches] + + def lookup_binary(*params): + return path.join(build_cache_dir, builds[tuple(params)], 'tools/dsss_demod_test') + + def params_mapper(seed, amplitude_spec, background, nbits, decimation, symbols, thresholds): + amplitude_spec = ','.join(str(x) for x in amplitude_spec) + thresholds = ','.join(str(x) for x in thresholds) + return seed, amplitude_spec, background, nbits, decimation, symbols, thresholds + + results = [] + for _params, chunk in parallel_generator(data_db, 'waveforms', + ['seed', 'amplitude_spec', 'background', 'nbits', 'decimation', 'symbols', 'thresholds'], + params_mapper=params_mapper, + builder=run_test, + param_list=waveform_params, desc='Simulating demodulation', + context=dict(cachedir=data_cache_dir, lookup_binary=lookup_binary), + disable_cache=args.no_cache): + results += chunk + + if args.dump: + with open(args.dump, 'w') as f: + json.dump(results, f) + diff --git a/tools/dsss_demod_test_waveform_gen.py b/tools/dsss_demod_test_waveform_gen.py new file mode 100644 index 0000000..414c553 --- /dev/null +++ b/tools/dsss_demod_test_waveform_gen.py @@ -0,0 +1,86 @@ + +from os import path +import json +import functools + +import numpy as np +import numbers +import math +from scipy import signal as sig +import scipy.fftpack + +sampling_rate = 10 # sp/s + +# From https://github.com/mubeta06/python/blob/master/signal_processing/sp/gold.py +preferred_pairs = {5:[[2],[1,2,3]], 6:[[5],[1,4,5]], 7:[[4],[4,5,6]], + 8:[[1,2,3,6,7],[1,2,7]], 9:[[5],[3,5,6]], + 10:[[2,5,9],[3,4,6,8,9]], 11:[[9],[3,6,9]]} + +def gen_gold(seq1, seq2): + gold = [seq1, seq2] + for shift in range(len(seq1)): + gold.append(seq1 ^ np.roll(seq2, -shift)) + return gold + +def gold(n): + n = int(n) + if not n in preferred_pairs: + raise KeyError('preferred pairs for %s bits unknown' % str(n)) + t0, t1 = preferred_pairs[n] + (seq0, _st0), (seq1, _st1) = sig.max_len_seq(n, taps=t0), sig.max_len_seq(n, taps=t1) + return gen_gold(seq0, seq1) + +def modulate(data, nbits=5): + # 0, 1 -> -1, 1 + mask = np.array(gold(nbits))*2 - 1 + + sel = mask[data>>1] + data_lsb_centered = ((data&1)*2 - 1) + + signal = (np.multiply(sel, np.tile(data_lsb_centered, (2**nbits-1, 1)).T).flatten() + 1) // 2 + return np.hstack([ np.zeros(len(mask)), signal, np.zeros(len(mask)) ]) + +def load_noise_meas_params(capture_file): + with open(capture_file, 'rb') as f: + meas_data = np.copy(np.frombuffer(f.read(), dtype='float32')) + meas_data -= np.mean(meas_data) + return (meas_data,) + +def mains_noise_measured(seed, n, meas_data): + last_valid = len(meas_data) - n + st = np.random.RandomState(seed) + start = st.randint(last_valid) + return meas_data[start:start+n] + 50.00 + +def load_noise_synth_params(specfile): + with open(specfile) as f: + d = json.load(f) + return {'spl_x': np.linspace(*d['x_spec']), + 'spl_N': d['x_spec'][2], + 'psd_spl': (d['t'], d['c'], d['k']) } + +def mains_noise_synthetic(seed, n, psd_spl, spl_N, spl_x): + st = np.random.RandomState(seed) + noise = st.normal(size=spl_N) * 2 + spec = scipy.fftpack.fft(noise) **2 + + spec *= np.exp(scipy.interpolate.splev(spl_x, psd_spl)) + + spec **= 1/2 + + renoise = scipy.fftpack.ifft(spec) + return renoise[10000:][:n] + 50.00 + +@functools.lru_cache() +def load_noise_gen(url): + schema, refpath = url.split('://') + if not path.isabs(refpath): + refpath = path.abspath(path.join(path.dirname(__file__), refpath)) + + if schema == 'meas': + return mains_noise_measured, load_noise_meas_params(refpath) + elif schema == 'synth': + return mains_noise_synthetic, load_noise_synth_params(refpath) + else: + raise ValueError('Invalid schema', schema) + diff --git a/tools/e2e_test.c b/tools/e2e_test.c new file mode 100644 index 0000000..935f70d --- /dev/null +++ b/tools/e2e_test.c @@ -0,0 +1,111 @@ + +#include <stdint.h> +#include <math.h> +#include <unistd.h> +#include <stdio.h> +#include <string.h> +#include <errno.h> +#include <stdlib.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <sys/fcntl.h> + +#include "freq_meas.h" +#include "dsss_demod.h" + +typedef uint16_t adc_data_t; + +void handle_dsss_received(uint8_t data[static TRANSMISSION_SYMBOLS]) { + printf("data sequence received: [ "); + for (size_t i=0; i<TRANSMISSION_SYMBOLS; i++) { + printf("%+3d", ((data[i]&1) ? 1 : -1) * (data[i]>>1)); + if (i+1 < TRANSMISSION_SYMBOLS) + printf(", "); + } + printf(" ]\n"); +} + +void print_usage(void); +void print_usage() { + fprintf(stderr, "Usage: e2e_test [emulated_adc_data.bin]\n"); +} + +int main(int argc, char **argv) { + if (argc != 2) { + fprintf(stderr, "Error: Invalid arguments.\n"); + print_usage(); + return 1; + } + + int fd = open(argv[1], O_RDONLY); + struct stat st; + if (fstat(fd, &st)) { + fprintf(stderr, "Error querying test data file size: %s\n", strerror(errno)); + return 2; + } + + if (st.st_size < 0 || st.st_size > 100000000) { + fprintf(stderr, "Error reading test data: too much test data (size=%zd)\n", st.st_size); + return 2; + } + + if (st.st_size % sizeof(adc_data_t) != 0) { + fprintf(stderr, "Error reading test data: file size is not divisible by %zd (size=%zd)\n", sizeof(adc_data_t), st.st_size); + return 2; + } + + char *buf = malloc(st.st_size); + if (!buf) { + fprintf(stderr, "Error allocating memory"); + return 2; + } + + const size_t n_samples = st.st_size / sizeof(adc_data_t); + fprintf(stderr, "Reading %zd samples test data...", n_samples); + ssize_t nread = 0; + while (nread < st.st_size) { + ssize_t rc = read(fd, buf + nread, st.st_size - nread); + + if (rc == -EINTR || rc == -EAGAIN) + continue; + + if (rc < 0) { + fprintf(stderr, "\nError reading test data: %s\n", strerror(errno)); + return 2; + } + + if (rc == 0) { + fprintf(stderr, "\nError reading test data: Unexpected end of file\n"); + return 2; + } + + nread += rc; + } + fprintf(stderr, " done. Read %zd bytes.\n", nread); + + adc_data_t *buf_d = (adc_data_t *)buf; + + struct dsss_demod_state demod; + dsss_demod_init(&demod); + + fprintf(stderr, "Starting simulation.\n"); + size_t iterations = (n_samples-FMEAS_FFT_LEN)/(FMEAS_FFT_LEN/2); + for (size_t i=0; i<iterations; i++) { + + /* + fprintf(stderr, "Iteration %zd/%zd\n", i, iterations); + */ + float res = NAN; + int rc = adc_buf_measure_freq(buf_d + i*(FMEAS_FFT_LEN/2), &res); + if (rc) + printf("ERROR: Simulation error in iteration %zd at position %zd: %d\n", i, i*(FMEAS_FFT_LEN/2), rc); + + dsss_demod_step(&demod, res, i); + /* + printf("%09zd %12f\n", i, res); + */ + } + + free(buf); + return 0; +} diff --git a/tools/fft_window_header_gen.py b/tools/fft_window_header_gen.py new file mode 100644 index 0000000..7df2ee3 --- /dev/null +++ b/tools/fft_window_header_gen.py @@ -0,0 +1,59 @@ +#!/usr/bin/env python3 + +import textwrap + +import scipy.signal as sig +import numpy as np + +WINDOW_TYPES = [ + 'boxcar', + 'triang', + 'blackman', + 'hamming', + 'hann', + 'bartlett', + 'flattop', + 'parzen', + 'bohman', + 'blackmanharris', + 'nuttall', + 'barthann', + 'kaiser', + 'gaussian', + 'general_gaussian', + 'slepian', + 'dpss', + 'chebwin', + 'exponential', + 'tukey', + ] + +if __name__ == '__main__': + import argparse + parser = argparse.ArgumentParser() + parser.add_argument('window', choices=WINDOW_TYPES, help='Type of window function to use') + parser.add_argument('n', type=int, help='Width of window in samples') + parser.add_argument('window_args', nargs='*', type=float, + help='''Window argument(s) if required. See https://docs.scipy.org/doc/scipy/reference/generated/scipy.signal.get_window.html#scipy.signal.get_window for details.''') + parser.add_argument('-v', '--variable', default='fft_window_table', help='Name for alias variable pointing to generated window') + args = parser.parse_args() + + print(f'/* FTT window table for {args.n} sample {args.window} window.') + if args.window_args: + print(f' * Window arguments were: ({" ,".join(str(arg) for arg in args.window_args)})') + print(f' */') + winargs = ''.join(f'_{arg:.4g}'.replace('.', 'F') for arg in args.window_args) + varname = f'fft_{args.n}_window_{args.window}{winargs}' + print(f'const float {varname}[{args.n}] = {{') + + win = sig.get_window(args.window if not args.window_args else (args.window, *args.window_args), + Nx=args.n, fftbins=True) + par = ' '.join(f'{f:>013.8g},' for f in win) + print(textwrap.fill(par, + initial_indent=' '*4, subsequent_indent=' '*4, + width=120, + replace_whitespace=False, drop_whitespace=False)) + print('};') + print() + print(f'const float * const {args.variable} __attribute__((weak)) = {varname};') + diff --git a/tools/fmeas_export_ocxo_2day.bin b/tools/fmeas_export_ocxo_2day.bin Binary files differnew file mode 100644 index 0000000..c0cd8a8 --- /dev/null +++ b/tools/fmeas_export_ocxo_2day.bin diff --git a/tools/freq_meas_test.c b/tools/freq_meas_test.c new file mode 100644 index 0000000..e2900ad --- /dev/null +++ b/tools/freq_meas_test.c @@ -0,0 +1,106 @@ + +#include <stdint.h> +#include <math.h> +#include <unistd.h> +#include <stdio.h> +#include <string.h> +#include <errno.h> +#include <stdlib.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <sys/fcntl.h> + +#include "freq_meas.h" + +void print_usage(void); + +void print_usage() { + fprintf(stderr, "Usage: freq_meas_test [test_data.bin]\n"); +} + +int main(int argc, char **argv) { + if (argc != 2) { + fprintf(stderr, "Error: Invalid arguments.\n"); + print_usage(); + return 1; + } + + int fd = open(argv[1], O_RDONLY); + struct stat st; + if (fstat(fd, &st)) { + fprintf(stderr, "Error querying test data file size: %s\n", strerror(errno)); + return 2; + } + + if (st.st_size < 0 || st.st_size > 1000000) { + fprintf(stderr, "Error reading test data: too much test data (size=%zd)\n", st.st_size); + return 2; + } + + if (st.st_size % sizeof(float) != 0) { + fprintf(stderr, "Error reading test data: file size is not divisible by %zd (size=%zd)\n", sizeof(float), st.st_size); + return 2; + } + + char *buf = malloc(st.st_size); + if (!buf) { + fprintf(stderr, "Error allocating memory"); + return 2; + } + + fprintf(stderr, "Reading %zd samples test data...", st.st_size/sizeof(float)); + ssize_t nread = 0; + while (nread < st.st_size) { + ssize_t rc = read(fd, buf + nread, st.st_size - nread); + + if (rc == -EINTR || rc == -EAGAIN) + continue; + + if (rc < 0) { + fprintf(stderr, "\nError reading test data: %s\n", strerror(errno)); + return 2; + } + + if (rc == 0) { + fprintf(stderr, "\nError reading test data: Unexpected end of file\n"); + return 2; + } + + nread += rc; + } + fprintf(stderr, " done.\n"); + + const size_t n_samples = st.st_size / sizeof(float); + float *buf_f = (float *)buf; + + int16_t *sim_adc_buf = calloc(sizeof(int16_t), n_samples); + if (!sim_adc_buf) { + fprintf(stderr, "Error allocating memory\n"); + return 2; + } + + fprintf(stderr, "Converting and truncating test data..."); + for (size_t i=0; i<n_samples; i++) + /* Note on scaling: We can't simply scale by 0x8000 (1/2 full range) here. Our test data is nominally 1Vp-p but + * certain tests such as the interharmonics one can have some samples exceeding that range. */ + sim_adc_buf[i] = buf_f[i] * (0x4000-1); + fprintf(stderr, " done.\n"); + + fprintf(stderr, "Starting simulation.\n"); + + size_t iterations = (n_samples-FMEAS_FFT_LEN)/(FMEAS_FFT_LEN/2); + for (size_t i=0; i<iterations; i++) { + + fprintf(stderr, "Iteration %zd/%zd\n", i, iterations); + float res = NAN; + int rc = adc_buf_measure_freq(sim_adc_buf + i*(FMEAS_FFT_LEN/2), &res); + if (rc) + printf("ERROR: Simulation error in iteration %zd at position %zd: %d\n", i, i*(FMEAS_FFT_LEN/2), rc); + + printf("%09zd %12f\n", i, res); + } + + free(buf); + free(sim_adc_buf); + return 0; +} diff --git a/tools/freq_meas_test_runner.py b/tools/freq_meas_test_runner.py new file mode 100644 index 0000000..779922a --- /dev/null +++ b/tools/freq_meas_test_runner.py @@ -0,0 +1,39 @@ +#!/usr/bin/env python3 + +import os +from os import path +import subprocess +import json + +import numpy as np +np.set_printoptions(linewidth=240) + + +if __name__ == '__main__': + import argparse + parser = argparse.ArgumentParser() + parser.add_argument(metavar='test_data_directory', dest='dir', help='Directory with test data .bin files') + default_binary = path.abspath(path.join(path.dirname(__file__), '../build/tools/freq_meas_test')) + parser.add_argument(metavar='test_binary', dest='binary', nargs='?', default=default_binary) + parser.add_argument('-d', '--dump', help='Write raw measurements to JSON file') + args = parser.parse_args() + + bin_files = [ path.join(args.dir, d) for d in os.listdir(args.dir) if d.lower().endswith('.bin') ] + + savedata = {} + for p in bin_files: + output = subprocess.check_output([args.binary, p], stderr=subprocess.DEVNULL) + measurements = np.array([ float(value) for _offset, value in [ line.split() for line in output.splitlines() ] ]) + savedata[p] = list(measurements) + + # Cut off first and last sample for mean and RMS calculations as these show boundary effects. + measurements = measurements[1:-1] + mean = np.mean(measurements) + rms = np.sqrt(np.mean(np.square(measurements - mean))) + + print(f'{path.basename(p):<60}: mean={mean:<8.4f}Hz rms={rms*1000:.3f}mHz') + + if args.dump: + with open(args.dump, 'w') as f: + json.dump(savedata, f) + diff --git a/tools/gold_code_header_gen.py b/tools/gold_code_header_gen.py new file mode 100644 index 0000000..fa98fce --- /dev/null +++ b/tools/gold_code_header_gen.py @@ -0,0 +1,70 @@ +#!/usr/bin/env python3 + +import sys +import math +import textwrap +import contextlib + +import numpy as np +import scipy.signal as sig + +# From https://github.com/mubeta06/python/blob/master/signal_processing/sp/gold.py +preferred_pairs = {5:[[2],[1,2,3]], 6:[[5],[1,4,5]], 7:[[4],[4,5,6]], + 8:[[1,2,3,6,7],[1,2,7]], 9:[[5],[3,5,6]], + 10:[[2,5,9],[3,4,6,8,9]], 11:[[9],[3,6,9]]} + +def gen_gold(seq1, seq2): + gold = [seq1, seq2] + for shift in range(len(seq1)): + gold.append(seq1 ^ np.roll(seq2, -shift)) + return gold + +def gold(n): + n = int(n) + if not n in preferred_pairs: + raise KeyError('preferred pairs for %s bits unknown' % str(n)) + t0, t1 = preferred_pairs[n] + (seq0, _st0), (seq1, _st1) = sig.max_len_seq(n, taps=t0), sig.max_len_seq(n, taps=t1) + return gen_gold(seq0, seq1) + +@contextlib.contextmanager +def print_include_guards(macro_name): + print(f'#ifndef {macro_name}') + print(f'#define {macro_name}') + yield + print(f'#endif /* {macro_name} */') + +if __name__ == '__main__': + import argparse + parser = argparse.ArgumentParser(add_help=False) + parser.add_argument('n', type=int, choices=preferred_pairs, help='bit width of shift register. Generate 2**n + 1 sequences of length 2**n - 1.') + parser.add_argument('-v', '--variable', default='gold_code_table', help='Name for weak alias of generated table') + parser.add_argument('-h', '--header', action='store_true', help='Generate header file') + parser.add_argument('-c', '--source', action='store_true', help='Generate table source file') + args = parser.parse_args() + + if not args.header != args.source: + print('Exactly one of --header and --source must be given.', file=sys.stderr) + sys.exit(1) + + nbytes = math.ceil((2**args.n-1)/8) + + if args.source: + print('/* THIS IS A GENERATED FILE. DO NOT EDIT! */') + print('#include <unistd.h>') + print('#include <stdint.h>') + print() + print(f'/* {args.n} bit gold sequences: {2**args.n+1} sequences of length {2**args.n-1} bit.') + print(f' *') + print(f' * Each code is packed left-aligned into {nbytes} bytes in big-endian byte order.') + print(f' */') + print(f'const uint8_t {args.variable}[{2**args.n+1}][{nbytes}] = {{') + for i, code in enumerate(gold(args.n)): + par = '{' + ' '.join(f'0x{d:02x},' for d in np.packbits(code)) + f'}}, /* {i: 3d} "{"".join(str(x) for x in code)}" */' + print(textwrap.fill(par, initial_indent=' '*4, subsequent_indent=' '*4, width=120)) + print('};') + print() + else: + print('/* THIS IS A GENERATED FILE. DO NOT EDIT! */') + with print_include_guards(f'__GOLD_CODE_GENERATED_HEADER_{args.n}__'): + print(f'extern const uint8_t {args.variable}[{2**args.n+1}][{nbytes}];') diff --git a/tools/grid_freq_psd_spl_108pt.json b/tools/grid_freq_psd_spl_108pt.json new file mode 100644 index 0000000..5a0ff41 --- /dev/null +++ b/tools/grid_freq_psd_spl_108pt.json @@ -0,0 +1 @@ +{"x_spec": [3.2595692805152726e-05, 5.0, 613575], "t": [3.2595692805152726e-05, 3.2595692805152726e-05, 3.2595692805152726e-05, 3.2595692805152726e-05, 0.0001423024947075771, 0.00015800362803968106, 0.00017543716661470822, 0.00019479425764873777, 0.0002162871388378975, 0.00024015146540428407, 0.00026664889389955537, 0.00029606995109590574, 0.00032873721941990017, 0.0003650088738553592, 0.0004052826090950758, 0.00045000000000000004, 0.000499651343175437, 0.0005547810327489297, 0.0006159935292916862, 0.0006839599873288199, 0.0007594256141046668, 0.0008432178402871724, 0.0009362553921977272, 0.0010395583650374223, 0.0011542594075560205, 0.001281616140796111, 0.0014230249470757708, 0.001580036280396809, 0.0017543716661470824, 0.0019479425764873776, 0.002162871388378975, 0.0024015146540428403, 0.002666488938995554, 0.002960699510959057, 0.0032873721941990056, 0.0036500887385535925, 0.004052826090950754, 0.0045000000000000005, 0.00499651343175437, 0.005547810327489296, 0.006159935292916869, 0.0068395998732882, 0.007594256141046669, 0.008432178402871724, 0.009362553921977271, 0.010395583650374221, 0.011542594075560205, 0.012816161407961109, 0.014230249470757707, 0.01580036280396809, 0.017543716661470823, 0.01947942576487376, 0.02162871388378975, 0.024015146540428405, 0.026664889389955565, 0.02960699510959057, 0.03287372194199005, 0.036500887385535925, 0.04052826090950754, 0.045, 0.0499651343175437, 0.05547810327489296, 0.06159935292916863, 0.06839599873288206, 0.07594256141046668, 0.08432178402871732, 0.09362553921977272, 0.10395583650374222, 0.11542594075560206, 0.12816161407961107, 0.14230249470757705, 0.15800362803968088, 0.1754371666147082, 0.1947942576487376, 0.21628713883789774, 0.24015146540428406, 0.26664889389955565, 0.2960699510959057, 0.32873721941990053, 0.36500887385535924, 0.40528260909507535, 0.45, 0.499651343175437, 0.5547810327489296, 0.6159935292916868, 0.6839599873288206, 0.7594256141046669, 0.8432178402871732, 0.9362553921977271, 1.0395583650374223, 1.1542594075560206, 1.2816161407961109, 1.4230249470757708, 1.5800362803968104, 1.7543716661470823, 1.9479425764873777, 2.162871388378975, 2.4015146540428405, 2.6664889389955535, 2.960699510959057, 3.287372194199002, 3.6500887385535927, 4.052826090950758, 4.5, 5.0, 5.0, 5.0, 5.0], "c": [0.7720161468716866, -0.5547528253056444, 0.30706059086000753, 0.19422577014134906, -1.1954636661840032, 0.9215976941641111, -0.6668136393976918, -1.341269161156733, -0.16311330594842666, -1.7639636752234251, -1.238385544822954, -0.32649555618555554, -0.03086589610280171, -2.358195657381619, -0.5759152419849985, 0.1892225800004134, -1.8122889670546236, -0.8109120798216202, -0.5500991736738969, -4.680192969256771, -2.8007700704649876, 0.16866469558571784, -1.1040811840849307, -3.0243574268705546, -4.018139927365795, -4.100581028618109, -0.556354762846191, -7.414377514669229, 1.36396325920194, -6.002559557058508, -2.2113451390305365, -4.578944771104116, -4.372644849632638, -3.945339124673235, -4.778747958903158, -2.370174137632325, -5.7372466088109295, -4.707506574819875, -4.834404729330929, -5.005244244061701, -5.82644896783577, -4.717966026411524, -6.146374820241562, -4.972788381244952, -5.854957092953355, -5.702174935205885, -6.222035857079607, -6.2128389666872, -6.212821706753751, -6.253599689326325, -6.681685577659057, -6.372364384360678, -6.771223202540934, -6.856809137231159, -6.986412256164045, -7.190466178818742, -7.577896455149433, -7.515731696006047, -7.598155006351761, -7.824526916149126, -8.141496591776512, -8.36794927682997, -8.80307396767114, -8.828816533544659, -9.357524260470413, -9.658130054343863, -10.005768472049466, -10.499801262514108, -11.028689820560558, -11.413688641742898, -11.906162042727946, -12.232342460719975, -12.438432746733596, -13.088338100203112, -12.308710772618745, -11.685074853925329, -11.397838681243094, -12.265219694936695, -13.600359694898529, -14.031425961884718, -12.236885080485473, -13.527508426900974, -13.698402018452601, -13.397911198962568, -14.144410560196603, -13.905769594095293, -14.410874830544122, -14.531727635304264, -14.59275291853806, -14.35404826562502, -14.58670053318149, -14.432515268864977, -14.363428024828353, -14.429222027493264, -14.73947634127499, -14.717315405960353, -14.678539669792505, -14.825278423641382, -14.80936417940876, -14.943375264882789, -14.680885181815674, -14.54841244844906, -14.634365225950589, -14.609444790868906, 0.0, 0.0, 0.0, 0.0], "k": 3}
\ No newline at end of file diff --git a/tools/hum_generator.py b/tools/hum_generator.py new file mode 100644 index 0000000..fbcabac --- /dev/null +++ b/tools/hum_generator.py @@ -0,0 +1,111 @@ +#!/usr/bin/env python +# coding: utf-8 + +import binascii +import struct + +import numpy as np +import pydub + +from dsss_demod_test_waveform_gen import load_noise_gen, modulate as dsss_modulate + +np.set_printoptions(linewidth=240) + +def generate_noisy_signal( + test_data=32, + test_nbits=5, + test_decimation=10, + test_signal_amplitude=20e-3, + noise_level=10e-3, + noise_spec='synth://grid_freq_psd_spl_108pt.json', + seed=0): + + #test_data = np.random.RandomState(seed=0).randint(0, 2 * (2**test_nbits), test_duration) + #test_data = np.array([0, 1, 2, 3] * 50) + if isinstance(test_data, int): + test_data = np.array(range(test_data)) + + + signal = np.repeat(dsss_modulate(test_data, test_nbits) * 2.0 - 1, test_decimation) + + noise_gen, noise_params = load_noise_gen(noise_spec) + noise = noise_gen(seed, len(signal), **noise_params) + return np.absolute(noise + signal*test_signal_amplitude) + +def write_raw_frequencies_bin(outfile, **kwargs): + with open(outfile, 'wb') as f: + for x in generate_noisy_signal(**kwargs): + f.write(struct.pack('f', x)) + +def synthesize_sine(freqs, freqs_sampling_rate=10.0, output_sampling_rate=44100): + duration = len(freqs) / freqs_sampling_rate # seconds + afreq_out = np.interp(np.linspace(0, duration, int(duration*output_sampling_rate)), np.linspace(0, duration, len(freqs)), freqs) + return np.sin(np.cumsum(2*np.pi * afreq_out / output_sampling_rate)) + +def write_flac(filename, signal, sampling_rate=44100): + signal -= np.min(signal) + signal /= np.max(signal) + signal -= 0.5 + signal *= 2**16 - 1 + le_bytes = signal.astype(np.int16).tobytes() + seg = pydub.AudioSegment(data=le_bytes, sample_width=2, frame_rate=sampling_rate, channels=1) + seg.export(filename, format='flac') + +def write_synthetic_hum_flac(filename, output_sampling_rate=44100, freqs_sampling_rate=10.0, **kwargs): + signal = generate_noisy_signal(**kwargs) + print(signal) + write_flac(filename, synthesize_sine(signal, freqs_sampling_rate, output_sampling_rate), + sampling_rate=output_sampling_rate) + +def emulate_adc_signal(adc_bits=12, adc_offset=0.4, adc_amplitude=0.25, freq_sampling_rate=10.0, output_sampling_rate=1000, **kwargs): + signal = synthesize_sine(generate_noisy_signal(), freq_sampling_rate, output_sampling_rate) + signal = signal*adc_amplitude + adc_offset + smin, smax = np.min(signal), np.max(signal) + if smin < 0.0 or smax > 1.0: + raise UserWarning('Amplitude or offset too large: Signal out of bounds with min/max [{smin}, {smax}] of ADC range') + signal *= 2**adc_bits -1 + return signal + +def save_adc_signal(fn, signal, dtype=np.uint16): + with open(fn, 'wb') as f: + f.write(signal.astype(dtype).tobytes()) + +def write_emulated_adc_signal_bin(filename, **kwargs): + save_adc_signal(filename, emulate_adc_signal(**kwargs)) + +def hum_cmd(args): + write_synthetic_hum_flac(args.out_flac, + output_sampling_rate=args.audio_sampling_rate, + freqs_sampling_rate=args.frequency_sampling_rate, + test_data = np.array(list(binascii.unhexlify(args.data))), + test_nbits = args.symbol_bits, + test_decimation = args.decimation, + test_signal_amplitude = args.signal_level/1e3, + noise_level = args.noise_level/1e3, + noise_spec=args.noise_spec, + seed = args.random_seed) + + +if __name__ == '__main__': + import argparse + parser = argparse.ArgumentParser() + cmd_parser = parser.add_subparsers(required=True) + hum_parser = cmd_parser.add_parser('hum', help='Generated artificial modulated mains hum') + # output parameters + hum_parser.add_argument('-a', '--audio-sampling-rate', type=int, default=44100) + + # modulation parameters + hum_parser.add_argument('-f', '--frequency-sampling-rate', type=float, default=10.0*100/128) + hum_parser.add_argument('-b', '--symbol-bits', type=int, default=5, help='bits per symbol (excluding sign bit)') + hum_parser.add_argument('-n', '--noise-level', type=float, default=1.0, help='Scale synthetic noise level') + hum_parser.add_argument('-s', '--signal-level', type=float, default=20.0, help='Synthetic noise level in mHz') + hum_parser.add_argument('-d', '--decimation', type=int, default=10, help='DSSS modulation decimation in frequency measurement cycles') + hum_parser.add_argument('-r', '--random-seed', type=int, default=0) + hum_parser.add_argument('--noise-spec', type=str, default='synth://grid_freq_psd_spl_108pt.json') + hum_parser.add_argument('out_flac', metavar='out.flac', help='FLAC output file') + hum_parser.add_argument('data', help='modulation data hex string') + hum_parser.set_defaults(func=hum_cmd) + + args = parser.parse_args() + args.func(args) + diff --git a/tools/ldparser.py b/tools/ldparser.py new file mode 100644 index 0000000..c620fe2 --- /dev/null +++ b/tools/ldparser.py @@ -0,0 +1,126 @@ + +import sys + +import pyparsing as pp +from pyparsing import pyparsing_common as ppc + +LPAREN, RPAREN, LBRACE, RBRACE, LBROK, RBROK, COLON, SEMICOLON, EQUALS, COMMA = map(pp.Suppress, '(){}<>:;=,') + +parse_suffix_int = lambda lit: int(lit[:-1]) * (10**(3*(1 + 'kmgtpe'.find(lit[-1].lower())))) +si_suffix = pp.oneOf('k m g t p e', caseless=True) + +numeric_literal = pp.Regex('0x[0-9a-fA-F]+').setName('hex int').setParseAction(pp.tokenMap(int, 16)) \ + | (pp.Regex('[0-9]+[kKmMgGtTpPeE]')).setName('size int').setParseAction(pp.tokenMap(parse_suffix_int)) \ + | pp.Word(pp.nums).setName('int').setParseAction(pp.tokenMap(int)) +access_def = pp.Regex('[rR]?[wW]?[xX]?').setName('access literal').setParseAction(pp.tokenMap(str.lower)) + +origin_expr = pp.Suppress(pp.CaselessKeyword('ORIGIN')) + EQUALS + numeric_literal +length_expr = pp.Suppress(pp.CaselessKeyword('LENGTH')) + EQUALS + numeric_literal +mem_expr = pp.Group(ppc.identifier + LPAREN + access_def + RPAREN + COLON + origin_expr + COMMA + length_expr) +mem_contents = pp.ZeroOrMore(mem_expr) + +mem_toplevel = pp.CaselessKeyword("MEMORY") + pp.Group(LBRACE + pp.Optional(mem_contents, []) + RBRACE) + +glob = pp.Word(pp.alphanums + '._*') +match_expr = pp.Forward() +assignment = pp.Forward() +funccall = pp.Group(pp.Word(pp.alphas + '_') + LPAREN + (assignment | numeric_literal | match_expr | glob | ppc.identifier) + RPAREN + pp.Optional(SEMICOLON)) +value = numeric_literal | funccall | ppc.identifier | '.' +formula = (value + pp.oneOf('+ = * / %') + value) | value +# suppress stray semicolons +assignment << (SEMICOLON | pp.Group((ppc.identifier | '.') + EQUALS + (formula | value) + pp.Optional(SEMICOLON))) +match_expr << (glob + LPAREN + pp.OneOrMore(funccall | glob) + RPAREN) + +section_contents = pp.ZeroOrMore(assignment | funccall | match_expr); + +section_name = pp.Regex('\.[a-zA-Z0-9_.]+') +section_def = pp.Group(section_name + pp.Optional(numeric_literal) + COLON + LBRACE + pp.Group(section_contents) + + RBRACE + pp.Optional(RBROK + ppc.identifier + pp.Optional('AT' + RBROK + ppc.identifier))) +sec_contents = pp.ZeroOrMore(section_def | assignment) + +sections_toplevel = pp.Group(pp.CaselessKeyword("SECTIONS").suppress() + LBRACE + sec_contents + RBRACE) + +toplevel_elements = mem_toplevel | funccall | sections_toplevel | assignment +ldscript = pp.Group(pp.ZeroOrMore(toplevel_elements)) +ldscript.ignore(pp.cppStyleComment) + +if __name__ == '__main__': + import argparse + parser = argparse.ArgumentParser() + parser.add_argument('linker_script', type=argparse.FileType('r')) + args = parser.parse_args() + + #print(mem_expr.parseString('FLASH (rx) : ORIGIN = 0x0800000, LENGTH = 512K', parseAll=True)) + # print(ldscript.parseString(''' + # /* Entry Point */ + # ENTRY(Reset_Handler) + # + # /* Highest address of the user mode stack */ + # _estack = 0x20020000; /* end of RAM */ + # /* Generate a link error if heap and stack don't fit into RAM */ + # _Min_Heap_Size = 0x200;; /* required amount of heap */ + # _Min_Stack_Size = 0x400;; /* required amount of stack */ + # ''', parseAll=True)) + + print(ldscript.parseFile(args.linker_script, parseAll=True)) + #print(funccall.parseString('KEEP(*(.isr_vector))')) + #print(section_contents.parseString(''' + # . = ALIGN(4); + # KEEP(*(.isr_vector)) /* Startup code */ + # . = ALIGN(4); + # ''', parseAll=True)) + + #print(section_def.parseString(''' + # .text : + # { + # . = ALIGN(4); + # *(.text) /* .text sections (code) */ + # *(.text*) /* .text* sections (code) */ + # *(.glue_7) /* glue arm to thumb code */ + # *(.glue_7t) /* glue thumb to arm code */ + # *(.eh_frame) + # + # KEEP (*(.init)) + # KEEP (*(.fini)) + # + # . = ALIGN(4); + # _etext = .; /* define a global symbols at end of code */ + # } >FLASH + # ''', parseAll=True)) + + #print(section_def.parseString('.ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH', parseAll=True)) + + #print(assignment.parseString('__preinit_array_start = .', parseAll=True)) + #print(assignment.parseString('a = 23', parseAll=True)) + #print(funccall.parseString('foo (a=23)', parseAll=True)) + #print(funccall.parseString('PROVIDE_HIDDEN (__preinit_array_start = .);', parseAll=True)) + #print(section_def.parseString(''' + # .preinit_array : + # { + # PROVIDE_HIDDEN (__preinit_array_start = .); + # KEEP (*(.preinit_array*)) + # PROVIDE_HIDDEN (__preinit_array_end = .); + # } >FLASH''', parseAll=True)) + #print(match_expr.parseString('*(SORT(.init_array.*))', parseAll=True)) + #print(funccall.parseString('KEEP (*(SORT(.init_array.*)))', parseAll=True)) + #print(section_def.parseString(''' + # .init_array : + # { + # PROVIDE_HIDDEN (__init_array_start = .); + # KEEP (*(SORT(.init_array.*))) + # KEEP (*(.init_array*)) + # PROVIDE_HIDDEN (__init_array_end = .); + # } >FLASH + # ''', parseAll=True)) + + #print(match_expr.parseString('*(.ARM.extab* .gnu.linkonce.armextab.*)', parseAll=True)) + #print(formula.parseString('. + _Min_Heap_Size', parseAll=True)) + #print(assignment.parseString('. = . + _Min_Heap_Size;', parseAll=True)) + #print(sections_toplevel.parseString(''' + # SECTIONS + # { + # .ARMattributes : { } + # } + # ''', parseAll=True)) + #sys.exit(0) + diff --git a/tools/linkmem.py b/tools/linkmem.py new file mode 100644 index 0000000..934a571 --- /dev/null +++ b/tools/linkmem.py @@ -0,0 +1,276 @@ + +import tempfile +import os +from os import path +import sys +import re +import subprocess +from contextlib import contextmanager +from collections import defaultdict +import colorsys + +import cxxfilt +from elftools.elf.elffile import ELFFile +from elftools.elf.enums import ENUM_ST_SHNDX +from elftools.elf.descriptions import describe_symbol_type, describe_sh_type +import libarchive +import matplotlib.cm + +@contextmanager +def chdir(newdir): + old_cwd = os.getcwd() + try: + os.chdir(newdir) + yield + finally: + os.chdir(old_cwd) + +def keep_last(it, first=None): + last = first + for elem in it: + yield last, elem + last = elem + +def delim(start, end, it, first_only=True): + found = False + for elem in it: + if end(elem): + if first_only: + return + found = False + elif start(elem): + found = True + elif found: + yield elem + +def delim_prefix(start, end, it): + yield from delim(lambda l: l.startswith(start), lambda l: end is not None and l.startswith(end), it) + +def trace_source_files(linker, cmdline, trace_sections=[], total_sections=['.text', '.data', '.rodata']): + with tempfile.TemporaryDirectory() as tempdir: + out_path = path.join(tempdir, 'output.elf') + output = subprocess.check_output([linker, '-o', out_path, f'-Wl,--print-map', *cmdline]) + lines = [ line.strip() for line in output.decode().splitlines() ] + # FIXME also find isr vector table references + + defs = {} + objs = defaultdict(lambda: 0) + aliases = {} + sec_name = None + last_loc = None + last_sym = None + line_cont = None + for last_line, line in keep_last(delim_prefix('Linker script and memory map', 'OUTPUT', lines), first=''): + if not line or line.startswith('LOAD '): + sec_name = None + continue + + # first part of continuation line + if m := re.match('^(\.[0-9a-zA-Z-_.]+)$', line): + line_cont = line + sec_name = None + continue + + if line_cont: + line = line_cont + ' ' + line + line_cont = None + + # -ffunction-sections/-fdata-sections section + if m := re.match('^(\.[0-9a-zA-Z-_.]+)\.([0-9a-zA-Z-_.]+)\s+(0x[0-9a-f]+)\s+(0x[0-9a-f]+)\s+(\S+)$', line): + sec, sym, loc, size, obj = m.groups() + *_, sym = sym.rpartition('.') + sym = cxxfilt.demangle(sym) + size = int(size, 16) + obj = path.abspath(obj) + + if sec not in total_sections: + size = 0 + + objs[obj] += size + defs[sym] = (sec, size, obj) + + sec_name, last_loc, last_sym = sec, loc, sym + continue + + # regular (no -ffunction-sections/-fdata-sections) section + if m := re.match('^(\.[0-9a-zA-Z-_]+)\s+(0x[0-9a-f]+)\s+(0x[0-9a-f]+)\s+(\S+)$', line): + sec, _loc, size, obj = m.groups() + size = int(size, 16) + obj = path.abspath(obj) + + if sec in total_sections: + objs[obj] += size + + sec_name = sec + last_loc, last_sym = None, None + continue + + # symbol def + if m := re.match('^(0x[0-9a-f]+)\s+(\S+)$', line): + loc, sym = m.groups() + sym = cxxfilt.demangle(sym) + loc = int(loc, 16) + if sym in defs: + continue + + if loc == last_loc: + assert last_sym is not None + aliases[sym] = last_sym + else: + assert sec_name + defs[sym] = (sec_name, None, obj) + last_loc, last_sym = loc, sym + + continue + + refs = defaultdict(lambda: set()) + for sym, (sec, size, obj) in defs.items(): + fn, _, member = re.match('^([^()]+)(\((.+)\))?$', obj).groups() + fn = path.abspath(fn) + + if member: + subprocess.check_call(['ar', 'x', '--output', tempdir, fn, member]) + fn = path.join(tempdir, member) + + with open(fn, 'rb') as f: + elf = ELFFile(f) + + symtab = elf.get_section_by_name('.symtab') + + symtab_demangled = { cxxfilt.demangle(nsym.name).replace(' ', ''): i + for i, nsym in enumerate(symtab.iter_symbols()) } + + s = set() + sec_map = { sec.name: i for i, sec in enumerate(elf.iter_sections()) } + matches = [ i for name, i in sec_map.items() if re.match(f'\.rel\..*\.{sym}', name) ] + if matches: + sec = elf.get_section(matches[0]) + for reloc in sec.iter_relocations(): + refsym = symtab.get_symbol(reloc['r_info_sym']) + name = refsym.name if refsym.name else elf.get_section(refsym['st_shndx']).name.split('.')[-1] + s.add(name) + refs[sym] = s + + for tsec in trace_sections: + matches = [ i for name, i in sec_map.items() if name == f'.rel{tsec}' ] + s = set() + if matches: + sec = elf.get_section(matches[0]) + for reloc in sec.iter_relocations(): + refsym = symtab.get_symbol(reloc['r_info_sym']) + s.add(refsym.name) + refs[tsec.replace('.', '_')] |= s + + return objs, aliases, defs, refs + +@contextmanager +def wrap(leader='', print=print, left='{', right='}'): + print(leader, left) + yield lambda *args, **kwargs: print(' ', *args, **kwargs) + print(right) + +def mangle(name): + return re.sub('[^a-zA-Z0-9_]', '_', name) + +hexcolor = lambda r, g, b, *_a: f'#{int(r*255):02x}{int(g*255):02x}{int(b*255):02x}' +def vhex(val): + r,g,b,_a = matplotlib.cm.viridis(1.0-val) + fc = hexcolor(r, g, b) + h,s,v = colorsys.rgb_to_hsv(r,g,b) + cc = '#000000' if v > 0.8 else '#ffffff' + return fc, cc + +if __name__ == '__main__': + import argparse + parser = argparse.ArgumentParser() + parser.add_argument('--trace-sections', type=str, action='append', default=[]) + parser.add_argument('--trim-stubs', type=str, action='append', default=[]) + parser.add_argument('--highlight-subdirs', type=str, default=None) + parser.add_argument('linker_binary') + parser.add_argument('linker_args', nargs=argparse.REMAINDER) + args = parser.parse_args() + + trace_sections = args.trace_sections + trace_sections_mangled = { sec.replace('.', '_') for sec in trace_sections } + objs, aliases, syms, refs = trace_source_files(args.linker_binary, args.linker_args, trace_sections) + + clusters = defaultdict(lambda: []) + for sym, (sec, size, obj) in syms.items(): + clusters[obj].append((sym, sec, size)) + + max_ssize = max(size or 0 for _sec, size, _obj in syms.values()) + max_osize = max(objs.values()) + + subdir_prefix = path.abspath(args.highlight_subdirs) + '/' if args.highlight_subdirs else '### NO HIGHLIGHT ###' + first_comp = lambda le_path: path.dirname(le_path).partition(os.sep)[0] + subdir_colors = sorted({ first_comp(obj[len(subdir_prefix):]) for obj in objs if obj.startswith(subdir_prefix) }) + subdir_colors = { path: hexcolor(*matplotlib.cm.Pastel1(i/len(subdir_colors))) for i, path in enumerate(subdir_colors) } + + subdir_sizes = defaultdict(lambda: 0) + for obj, size in objs.items(): + if not isinstance(size, int): + continue + if obj.startswith(subdir_prefix): + subdir_sizes[first_comp(obj[len(subdir_prefix):])] += size + else: + subdir_sizes['<others>'] += size + + print('Subdir sizes:', file=sys.stderr) + for subdir, size in sorted(subdir_sizes.items(), key=lambda x: x[1]): + print(f'{subdir:>20}: {size:>6,d} B', file=sys.stderr) + + def lookup_highlight(path): + if args.highlight_subdirs: + if obj.startswith(subdir_prefix): + highlight_head = first_comp(path[len(subdir_prefix):]) + return subdir_colors[highlight_head], highlight_head + else: + return '#e0e0e0', None + else: + return '#ddf7f4', None + + with wrap('digraph G', print) as lvl1print: + print('size="23.4,16.5!";') + print('graph [fontsize=40];') + print('node [fontsize=40];') + #print('ratio="fill";') + + print('rankdir=LR;') + print('ranksep=5;') + print('nodesep=0.2;') + print() + + for i, (obj, obj_syms) in enumerate(clusters.items()): + with wrap(f'subgraph cluster_{i}', lvl1print) as lvl2print: + print('style = "filled";') + highlight_color, highlight_head = lookup_highlight(obj) + print(f'bgcolor = "{highlight_color}";') + print('pencolor = none;') + fc, cc = vhex(objs[obj]/max_osize) + highlight_subdir_part = f'<font face="carlito" color="{cc}" point-size="40">{highlight_head} / </font>' if highlight_head else '' + lvl2print(f'label = <<table border="0"><tr><td border="0" cellpadding="5" bgcolor="{fc}">' + f'{highlight_subdir_part}' + f'<font face="carlito" color="{cc}"><b>{path.basename(obj)} ({objs[obj]}B)</b></font>' + f'</td></tr></table>>;') + lvl2print() + for sym, sec, size in obj_syms: + has_size = isinstance(size, int) and size > 0 + size_s = f' ({size}B)' if has_size else '' + fc, cc = vhex(size/max_ssize) if has_size else ('#ffffff', '#000000') + shape = 'box' if sec == '.text' else 'oval' + lvl2print(f'{mangle(sym)}[label = "{sym}{size_s}", style="rounded,filled", shape="{shape}", fillcolor="{fc}", fontname="carlito", fontcolor="{cc}" color=none];') + lvl1print() + + edges = set() + for start, ends in refs.items(): + for end in ends: + end = aliases.get(end, end) + if (start in syms or start in trace_sections_mangled) and end in syms: + edges.add((start, end)) + + for start, end in edges: + lvl1print(f'{mangle(start)} -> {mangle(end)} [style="bold", color="#333333"];') + + for sec in trace_sections: + lvl1print(f'{sec.replace(".", "_")} [label = "section {sec}", shape="box", style="filled,bold"];') + diff --git a/tools/linksize.py b/tools/linksize.py new file mode 100644 index 0000000..c41a951 --- /dev/null +++ b/tools/linksize.py @@ -0,0 +1,62 @@ +#!/usr/bin/env python3 + +def parse_linker_script(data): + pass + +def link(groups): + defined_symbols = {} + undefined_symbols = set() + for group, files in groups: + while True: + found_something = False + + for fn in files: + symbols = load_symbols(fn) + for symbol in symbols: + if symbol in defined_symbols: + + if not group or not found_something: + break + + +if __name__ == '__main__': + + import argparse + parser = argparse.ArgumentParser() + parser.add_argument('-T', '--script', type=str, help='Linker script to use') + parser.add_argument('-o', '--output', type=str, help='Output file to produce') + args, rest = parser.parse_known_intermixed_args() + print(rest) + + addprefix = lambda *xs: [ prefix + opt for opt in xs for prefix in ('', '-Wl,') ] + START_GROUP = addprefix('-(', '--start-group') + END_GROUP = addprefix('-)', '--end-group') + GROUP_OPTS = [*START_GROUP, *END_GROUP] + input_files = [ arg for arg in rest if not arg.startswith('-') or arg in GROUP_OPTS ] + + def input_file_iter(input_files): + group = False + files = [] + for arg in input_files: + if arg in START_GROUP: + assert not group + + if files: + yield False, files # nested -Wl,--start-group + group, files = True, [] + + elif arg in END_GROUP: + assert group # missing -Wl,--start-group + if files: + yield True, files + group, files = False, [] + + else: + files.append(arg) + + assert not group # missing -Wl,--end-group + if files: + yield False, files + + + diff --git a/tools/linktracer.py b/tools/linktracer.py new file mode 100644 index 0000000..0c53a60 --- /dev/null +++ b/tools/linktracer.py @@ -0,0 +1,118 @@ +#!/usr/bin/env python3 + +import re +import subprocess +import tempfile +import pprint + +ARCHIVE_RE = r'([^(]*)(\([^)]*\))?' + +def trace_source_files(linker, cmdline): + with tempfile.NamedTemporaryFile() as mapfile: + output = subprocess.check_output([linker, f'-Wl,--Map={mapfile.name}', *cmdline]) + + # intentionally use generator here + idx = 0 + lines = [ line.rstrip() for line in mapfile.read().decode().splitlines() if line.strip() ] + + for idx, line in enumerate(lines[idx:], start=idx): + #print('Dropping', line) + if line == 'Linker script and memory map': + break + + idx += 1 + objects = [] + symbols = {} + sections = {} + current_object = None + last_offset = None + last_symbol = None + cont_sec = None + cont_ind = None + current_section = None + for idx, line in enumerate(lines[idx:], start=idx): + print(f'Processing >{line}') + if line.startswith('LOAD'): + _load, obj = line.split() + objects.append(obj) + continue + + if line.startswith('OUTPUT'): + break + + m = re.match(r'^( ?)([^ ]+)? +(0x[0-9a-z]+) +(0x[0-9a-z]+)?(.*)?$', line) + if m is None: + m = re.match(r'^( ?)([^ ]+)?$', line) + if m: + cont_ind, cont_sec = m.groups() + else: + cont_ind, cont_sec = None, None + last_offset, last_symbol = None, None + continue + indent, sec, offx, size, sym_or_src = m.groups() + if sec is None: + sec = cont_sec + ind = cont_ind + cont_sec = None + cont_ind = None + print(f'vals: indent={indent} sec={sec} offx={offx} size={size} sym_or_src={sym_or_src}') + if not re.match('^[a-zA-Z_0-9<>():*]+$', sym_or_src): + continue + + if indent == '': + print(f'Section: {sec} 0x{size:x}') + current_section = sec + sections[sec] = size + last_offset = None + last_symbol = None + continue + + if offx is not None: + offx = int(offx, 16) + if size is not None: + size = int(size, 16) + + if size is not None and sym_or_src is not None: + # archive/object line + archive, _member = re.match(ARCHIVE_RE, sym_or_src).groups() + current_object = archive + last_offset = offx + else: + if sym_or_src is not None: + assert size is None + if last_offset is not None: + last_size = offx - last_offset + symbols[last_symbol] = (last_size, current_section) + print(f'Symbol: {last_symbol} 0x{last_size:x} @{current_section}') + last_offset = offx + last_symbol = sym_or_src + + idx += 1 + + for idx, line in enumerate(lines[idx:], start=idx): + if line == 'Cross Reference Table': + break + + idx += 1 + + # map which symbol was pulled from which object in the end + used_defs = {} + for line in lines: + *left, right = line.split() + + archive, _member = re.match(ARCHIVE_RE, right).groups() + if left: + used_defs[''.join(left)] = archive + + #pprint.pprint(symbols) + + +if __name__ == '__main__': + import argparse + parser = argparse.ArgumentParser() + parser.add_argument('linker_binary') + parser.add_argument('linker_args', nargs=argparse.REMAINDER) + args = parser.parse_args() + + source_files = trace_source_files(args.linker_binary, args.linker_args) + diff --git a/tools/mapparse.py b/tools/mapparse.py new file mode 100644 index 0000000..c1f460a --- /dev/null +++ b/tools/mapparse.py @@ -0,0 +1,129 @@ + +import re +from collections import defaultdict, namedtuple + +Section = namedtuple('Section', ['name', 'offset', 'objects']) +ObjectEntry = namedtuple('ObjectEntry', ['filename', 'object', 'offset', 'size']) +FileEntry = namedtuple('FileEntry', ['section', 'object', 'offset', 'length']) + +class Memory: + def __init__(self, name, origin, length, attrs=''): + self.name, self.origin, self.length, self.attrs = name, origin, length, attrs + self.sections = {} + self.files = defaultdict(lambda: []) + self.totals = defaultdict(lambda: 0) + + def add_toplevel(self, name, offx, length): + self.sections[name] = Section(offx, length, []) + + def add_obj(self, name, offx, length, fn, obj): + base_section, sep, subsec = name[1:].partition('.') + base_section = '.'+base_section + if base_section in self.sections: + sec = secname, secoffx, secobjs = self.sections[base_section] + secobjs.append(ObjectEntry(fn, obj, offx, length)) + else: + sec = None + self.files[fn].append(FileEntry(sec, obj, offx, length)) + self.totals[fn] += length + +class MapFile: + def __init__(self, s): + self._lines = s.splitlines() + self.memcfg = {} + self.defaultmem = Memory('default', 0, 0xffffffffffffffff) + self._parse() + + def __getitem__(self, offx_or_name): + ''' Lookup a memory area by name or address ''' + if offx_or_name in self.memcfg: + return self.memcfg[offx_or_name] + + elif isinstance(offx_or_name, int): + for mem in self.memcfg.values(): + if mem.origin <= offx_or_name < mem.origin+mem.length: + return mem + else: + return self.defaultmem + + raise ValueError('Invalid argument type for indexing') + + def _skip(self, regex): + matcher = re.compile(regex) + for l in self: + if matcher.match(l): + break + + def __iter__(self): + while self._lines: + yield self._lines.pop(0) + + def _parse(self): + self._skip('^Memory Configuration') + + # Parse memory segmentation info + self._skip('^Name') + for l in self: + if not l: + break + name, origin, length, *attrs = l.split() + if not name.startswith('*'): + self.memcfg[name] = Memory(name, int(origin, 16), int(length, 16), attrs[0] if attrs else '') + + # Parse section information + toplevel_m = re.compile('^(\.[a-zA-Z0-9_.]+)\s+(0x[0-9a-fA-F]+)\s+(0x[0-9a-fA-F]+)') + secondlevel_m = re.compile('^ (\.[a-zA-Z0-9_.]+)\s+(0x[0-9a-fA-F]+)\s+(0x[0-9a-fA-F]+)\s+(.*)$') + secondlevel_linebreak_m = re.compile('^ (\.[a-zA-Z0-9_.]+)\n') + filelike = re.compile('^(/?[^()]*\.[a-zA-Z0-9-_]+)(\(.*\))?') + linebreak_section = None + for l in self: + # Toplevel section + match = toplevel_m.match(l) + if match: + name, offx, length = match.groups() + offx, length = int(offx, 16), int(length, 16) + self[offx].add_toplevel(name, offx, length) + + match = secondlevel_linebreak_m.match(l) + if match: + linebreak_section, = match.groups() + continue + + if linebreak_section: + l = ' {} {}'.format(linebreak_section, l) + linebreak_section = None + + # Second-level section + match = secondlevel_m.match(l) + if match: + name, offx, length, misc = match.groups() + match = filelike.match(misc) + if match: + fn, obj = match.groups() + obj = obj.strip('()') if obj else None + offx, length = int(offx, 16), int(length, 16) + self[offx].add_obj(name, offx, length, fn, obj) + + +if __name__ == '__main__': + import argparse + parser = argparse.ArgumentParser(description='Parser GCC map file') + parser.add_argument('mapfile', type=argparse.FileType('r'), help='The GCC .map file to parse') + parser.add_argument('-m', '--memory', type=str, help='The memory segments to print, comma-separated') + args = parser.parse_args() + mf = MapFile(args.mapfile.read()) + args.mapfile.close() + + mems = args.memory.split(',') if args.memory else mf.memcfg.keys() + + for name in mems: + mem = mf.memcfg[name] + print('Symbols by file for memory', name) + for tot, fn in reversed(sorted( (tot, fn) for fn, tot in mem.totals.items() )): + print(' {:>8} {}'.format(tot, fn)) + for length, offx, sec, obj in reversed(sorted(( (length, offx, sec, obj) for sec, obj, offx, length in + mem.files[fn] ), key=lambda e: e[0] )): + name = sec.name if sec else None + print(' {:>8} {:>#08x} {}'.format(length, offx, obj)) + #print('{:>16} 0x{:016x} 0x{:016x} ({:>24}) {}'.format(name, origin, length, length, attrs)) + diff --git a/tools/presig_gen.py b/tools/presig_gen.py new file mode 100644 index 0000000..c5dafe7 --- /dev/null +++ b/tools/presig_gen.py @@ -0,0 +1,141 @@ +#!/usr/bin/env python3 + +import os +import sys +import textwrap +import uuid +import hmac +import binascii +import time +from datetime import datetime + +LINKING_KEY_SIZE = 15 +PRESIG_VERSION = '000.001' +DOMAINS = ['all', 'country', 'region', 'vendor', 'series'] + +def format_hex(data, indent=4, wrap=True): + indent = ' '*indent + par = ', '.join(f'0x{b:02x}' for b in data) + par = textwrap.fill(par, width=120, + initial_indent=indent, subsequent_indent=indent, + replace_whitespace=False, drop_whitespace=False) + if wrap: + return f'{{\n{par}\n}}' + return par + +def domain_string(domain, value): + return f'smart reset domain string v{PRESIG_VERSION}: domain:{domain}={value}' + +def keygen_cmd(args): + if os.path.exists(args.keyfile) and not args.force: + print("Error: keyfile already exists. We won't overwrite it. Instead please remove it manually.", + file=sys.stderr) + return 1 + + root_key = os.urandom(LINKING_KEY_SIZE) + + with open(args.keyfile, 'wb') as f: + f.write(binascii.hexlify(root_key)) + f.write(b'\n') + return 0 + +def gen_at_height(domain, value, height, key): + # nanananananana BLOCKCHAIN! + + ds = domain_string(domain, value).encode('utf-8') + + for height in range(height+1): + key = hmac.digest(key, ds, 'sha512')[:LINKING_KEY_SIZE] + + return key + +def auth_cmd(args): + with open(args.keyfile, 'r') as f: + root_key = binascii.unhexlify(f.read().strip()) + + vals = [ (domain, getattr(args, domain)) for domain in DOMAINS if getattr(args, domain) is not None ] + if not vals: + vals = [('all', 'all')] + for domain, value in vals: + auth = gen_at_height(domain, value, args.height, root_key) + print(f'{domain}="{value}" @{args.height}: {binascii.hexlify(auth).decode()}') + + +def prekey_cmd(args): + with open(args.keyfile, 'r') as f: + root_key = binascii.unhexlify(f.read().strip()) + + print('#include <stdint.h>') + print('#include <assert.h>') + print() + print('#include "crypto.h"') + print() + + bundle_id = uuid.uuid4().bytes + print(f'/* bundle id {binascii.hexlify(bundle_id).decode()} */') + print(f'uint8_t presig_bundle_id[16] = {format_hex(bundle_id)};') + print() + print(f'/* generated on {datetime.now()} */') + print(f'uint64_t bundle_timestamp = {int(time.time())};') + print() + print(f'int presig_height = {args.max_height};') + print() + + print('const char *presig_domain_strings[_TRIGGER_DOMAIN_COUNT] = {') + for domain in DOMAINS: + ds = domain_string(domain, getattr(args, domain)) + assert '"' not in ds + print(f' [TRIGGER_DOMAIN_{domain.upper()}] = "{ds}",') + print('};') + print() + + print('uint8_t presig_keys[_TRIGGER_DOMAIN_COUNT][PRESIG_MSG_LEN] = {') + for domain in DOMAINS: + key = gen_at_height(domain, getattr(args, domain), args.max_height, root_key) + print(f' [TRIGGER_DOMAIN_{domain.upper()}] = {{{format_hex(key, indent=0, wrap=False)}}},') + print('};') + + print() + print('static inline void __hack_asserts_only(void) {') + print(f' static_assert(_TRIGGER_DOMAIN_COUNT == {len(DOMAINS)});') + print(f' static_assert(PRESIG_MSG_LEN == {LINKING_KEY_SIZE});') + print('}') + print() + + + +TEST_VENDOR = 'Darthenschmidt Cyberei und Verschleierungstechnik GmbH' +TEST_SERIES = 'Frobnicator v0.23.7' +TEST_REGION = 'Neuland' +TEST_COUNTRY = 'Germany' + +if __name__ == '__main__': + import argparse + parser = argparse.ArgumentParser() + parser.add_argument('keyfile', help='Key file to use') + + subparsers = parser.add_subparsers(title='subcommands') + keygen_parser = subparsers.add_parser('keygen', help='Generate a new key') + keygen_parser.add_argument('-f', '--force', action='store_true', help='Force overwriting existing keyfile') + keygen_parser.set_defaults(func=keygen_cmd) + + auth_parser = subparsers.add_parser('auth', help='Generate one-time authentication string') + auth_parser.add_argument('height', type=int, help='Authentication string height, counting from 0 (root key)') + auth_parser.set_defaults(func=auth_cmd) + auth_parser.add_argument('-a', '--all', action='store_const', const='all', help='Vendor name for vendor domain') + auth_parser.add_argument('-v', '--vendor', type=str, nargs='?', const=TEST_VENDOR, help='Vendor name for vendor domain') + auth_parser.add_argument('-s', '--series', type=str, nargs='?', const=TEST_SERIES, help='Series identifier for series domain') + auth_parser.add_argument('-r', '--region', type=str, nargs='?', const=TEST_REGION, help='Region name for region domain') + auth_parser.add_argument('-c', '--country', type=str, nargs='?', const=TEST_COUNTRY, help='Country name for country domain') + + prekey_parser = subparsers.add_parser('prekey', help='Generate prekey data .C source code file') + prekey_parser.add_argument('-m', '--max-height', type=int, default=8, help='Height of generated prekey') + prekey_parser.add_argument('-v', '--vendor', type=str, default=TEST_VENDOR, help='Vendor name for vendor domain') + prekey_parser.add_argument('-s', '--series', type=str, default=TEST_SERIES, help='Series identifier for series domain') + prekey_parser.add_argument('-r', '--region', type=str, default=TEST_REGION, help='Region name for region domain') + prekey_parser.add_argument('-c', '--country', type=str, default=TEST_COUNTRY, help='Country name for country domain') + prekey_parser.set_defaults(func=prekey_cmd, all='all') + + args = parser.parse_args() + sys.exit(args.func(args)) + diff --git a/tools/reed_solomon.py b/tools/reed_solomon.py new file mode 100644 index 0000000..c4ca6e4 --- /dev/null +++ b/tools/reed_solomon.py @@ -0,0 +1,91 @@ +import os, sys +import ctypes as C +import argparse +import binascii +import numpy as np +import timeit +import statistics + +lib = C.CDLL('rslib.so') + +lib.rslib_encode.argtypes = [C.c_int, C.c_size_t, C.POINTER(C.c_char), C.POINTER(C.c_char)] +lib.rslib_decode.argtypes = [C.c_int, C.c_size_t, C.POINTER(C.c_char)] +lib.rslib_gexp.argtypes = [C.c_int, C.c_int] +lib.rslib_gexp.restype = C.c_int +lib.rslib_decode.restype = C.c_int +lib.rslib_npar.restype = C.c_size_t + +def npar(): + return lib.rslib_npar() + +def encode(data: bytes, nbits=8): + out = C.create_string_buffer(len(data) + lib.rslib_npar()) + lib.rslib_encode(nbits, len(data), data, out) + return out.raw + +def decode(data: bytes, nbits=8): + inout = C.create_string_buffer(data) + lib.rslib_decode(nbits, len(data), inout) + return inout.raw[:-lib.rslib_npar() - 1] + +def cmdline_func_test(args, print=lambda *args, **kwargs: None, benchmark=False): + st = np.random.RandomState(seed=args.seed) + + lfsr = [lib.rslib_gexp(i, args.bits) for i in range(2**args.bits - 1)] + print('LFSR', len(set(lfsr)), lfsr) + assert all(0 < x < 2**args.bits for x in lfsr) + assert len(set(lfsr)) == 2**args.bits - 1 + + print('Seed', args.seed) + for i in range(args.repeat): + print(f'Run {i}') + test_data = bytes(st.randint(2**args.bits, size=args.message_length, dtype=np.uint8)) + print(' Raw:', binascii.hexlify(test_data).decode()) + encoded = encode(test_data, nbits=args.bits) + print(' Encoded:', binascii.hexlify(encoded).decode()) + + indices = st.permutation(len(encoded)) + encoded = list(encoded) + for pos in indices[:args.errors]: + encoded[pos] = st.randint(2**args.bits) + encoded = bytes(encoded) + print(' Modified:', ''.join(f'\033[91m{b:02x}\033[0m' if pos in indices[:args.errors] else f'{b:02x}' for pos, b in enumerate(encoded))) + + if benchmark: + rpt = 10000 + delta = timeit.timeit('decode(encoded, nbits=args.bits)', + globals={'args': args, 'decode': decode, 'encoded': encoded}, + number=rpt)/rpt + print(f'Decoding runtime: {delta*1e6:.3f}μs') + decoded = decode(encoded, nbits=args.bits) + print(' Decoded:', binascii.hexlify(decoded).decode()) + print(' Delta:', binascii.hexlify( + bytes(x^y for x, y in zip(test_data, decoded)) + ).decode().replace('0', '.')) + assert test_data == decoded + +def cmdline_func_encode(args, **kwargs): + data = np.frombuffer(binascii.unhexlify(args.hex_str), dtype=np.uint8) + # Map 8 bit input to 6 bit symbol string + data = np.packbits(np.pad(np.unpackbits(data).reshape((-1, 6)), ((0,0),(2, 0))).flatten()) + encoded = encode(data.tobytes(), nbits=args.bits) + print('symbol array:', ', '.join(f'0x{x:02x}' for x in encoded)) + print('hex string:', binascii.hexlify(encoded).decode()) + +if __name__ == '__main__': + parser = argparse.ArgumentParser() + cmd_parser = parser.add_subparsers(required=True) + test_parser = cmd_parser.add_parser('test', help='Test reed-solomon implementation') + test_parser.add_argument('-m', '--message-length', type=int, default=6, help='Test message (plaintext) length in bytes') + test_parser.add_argument('-e', '--errors', type=int, default=2, help='Number of byte errors to insert into simulation') + test_parser.add_argument('-r', '--repeat', type=int, default=1000, help='Repeat experiment -r times') + test_parser.add_argument('-b', '--bits', type=int, default=8, help='Symbol bit size') + test_parser.add_argument('-s', '--seed', type=int, default=0, help='Random seed') + test_parser.set_defaults(func=cmdline_func_test) + enc_parser = cmd_parser.add_parser('encode', help='RS-Encode given hex string') + enc_parser.set_defaults(func=cmdline_func_encode) + enc_parser.add_argument('-b', '--bits', type=int, default=8, help='Symbol bit size') + enc_parser.add_argument('hex_str', type=str, help='Input data as hex string') + args = parser.parse_args() + args.func(args) + |