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GeezerVison is showing github.com — circuitpython/tools/chart_code_size.py at master · ProGamerCode/circuitpython Expand file tree/ Copy pathchart_code_size.pyMore file actions 454 lines (424 loc) · 18.8 KB / Copy pathchart_code_size.pyFile metadata and controls454 lines (424 loc) · 18.8 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 # This script renders a graph of the CircuitPython rom image. # It takes the single elf file and uses objdump to get its contents. import pygraphviz as pgv import click import sh # Replace dashes with underscores objdump = sh.arm_none_eabi_objdump def parse_hex(h): return int("0x" + h, 0) BAD_JUMPS = ["UNPREDICTABLE", "_etext"] SPECIAL_NODE_COLORS = { "main": "pink", "exception_table": "green" } @click.command() @click.argument("elf_filename") def do_all_the_things(elf_filename): symbol = None last_address = 0 all_symbols = {} symbols_by_debug_address = {} symbols_by_memory_address = {} symbols_by_linkage_name = {} # Gather type info so we know how to treat the disassembly debug_dump = objdump("--dwarf=info", elf_filename) debug_dump_lines = debug_dump.stdout.decode("utf-8").split("\n") symbol_stack = [] symbol = None ignore = False min_call_site_param = 0x20000000 for line in debug_dump_lines: if not line: continue parts = line.split() if line[1] == "<": if parts[-1] == "0": symbol = symbol_stack.pop() continue debug_type = parts[-1].strip("()") ignore = False # skip info about function parameters if debug_type == "DW_TAG_formal_parameter": ignore = True depth = int(parts[0].split(">")[0].strip("<")) if len(symbol_stack) == (depth - 1) and depth > 0: symbol_stack.append(symbol) elif symbol and "name" in symbol: if symbol["debug_type"] == "DW_TAG_variable": if "start_address" not in symbol: pass else: symbols_by_memory_address[symbol["start_address"]] = symbol elif symbol["debug_type"] in ["DW_TAG_member", "DW_TAG_label", "DW_TAG_typedef", "DW_TAG_enumerator", "DW_TAG_enumeration_type", "DW_TAG_base_type", "DW_TAG_structure_type", "DW_TAG_compile_unit", "DW_TAG_union_type"]: # skip symbols that don't end up in memory. the type info is available through the debug address map pass else: if symbol["name"] in all_symbols: # print(depth, symbol["name"]) # print(symbol) # print(all_symbols[symbol["name"]]) # print() pass all_symbols[symbol["name"]] = symbol elif symbol and symbol["debug_type"] == "DW_TAG_GNU_call_site_parameter" and "call_site_value" in symbol: parent = -1 while symbol_stack[parent]["debug_type"] != "DW_TAG_subprogram": parent -= 1 parent = symbol_stack[parent] # Only point to ROM addr = symbol["call_site_value"] if 0x2000 <= addr < 0x20000000: if "outgoing_pointers" not in parent: parent["outgoing_pointers"] = set() parent["outgoing_pointers"].add(addr) if addr not in symbols_by_memory_address: symbols_by_memory_address[addr] = symbol min_call_site_param = min(addr, min_call_site_param) symbol["name"] = "name{:x}".format(addr) address = parse_hex(parts[0].split("<")[-1].strip(">:")) symbol = {"debug_address": address, "debug_type": debug_type, "other": []} if debug_type == "DW_TAG_structure_type": symbol["struct"] = {} elif debug_type == "DW_TAG_array_type": symbol["subtype"] = None symbol["bound_count"] = 0 symbol["maxlen"] = 0 elif debug_type == "DW_TAG_subrange_type": symbol_stack[-1]["subtype"] = symbol symbols_by_debug_address[address] = symbol elif ignore: continue elif line[:4] == " ": tag = parts[1].strip(":") if tag == "DW_AT_name": symbol["name"] = parts[-1] elif tag == "DW_AT_type": symbol["type"] = int(parts[-1].strip("<>"), 0) if symbol["debug_type"] == "DW_TAG_subrange_type": if not symbol_stack[-1]["subtype"]: symbol_stack[-1]["subtype"] = symbol elif symbol_stack[-1]["subtype"]["type"] == symbol["type"]: second_subtype = True else: raise RuntimeError() elif tag == "DW_AT_upper_bound": # Skip arrays with length defined by other variables if parts[-1][0] != "<": upper_bound = int(parts[-1]) if symbol_stack[-1]["bound_count"] > 0: symbol_stack[-1]["maxlen"] *= upper_bound + 1 else: symbol_stack[-1]["maxlen"] = upper_bound + 1 symbol_stack[-1]["bound_count"] += 1 elif tag == "DW_AT_byte_size": symbol["size"] = int(parts[-1]) elif tag == "DW_AT_inline": symbol["inlined"] = True elif tag == "DW_AT_low_pc": addr = int(parts[-1], 0) symbols_by_memory_address[addr] = symbol elif tag == "DW_AT_location": if parts[-2] == "(DW_OP_addr:": addr = parse_hex(parts[-1].strip(")")) if addr > 0: symbol["start_address"] = addr elif tag == "DW_AT_linkage_name": symbol["linkage_name"] = parts[-1] symbols_by_linkage_name[symbol["linkage_name"]] = symbol elif tag == "DW_AT_data_member_location": symbol_stack[-1]["struct"][int(parts[-1])] = symbol elif tag == "DW_AT_GNU_call_site_value": if parts[-2] == "(DW_OP_addr:": symbol["call_site_value"] = parse_hex(parts[-1].strip(")")) else: symbol["other"].append(line) #print(parts) pass else: #print(line) pass MEMORY_NONE = 0 MEMORY_POINTER = 1 MEMORY_PY_OBJECT = 2 def get_size(t): if "size" in t: return t["size"] return get_size(symbols_by_debug_address[t["type"]]) def get_pointer_map(t, depth=0): if t["debug_type"] == "DW_TAG_pointer_type": return {0: MEMORY_POINTER} elif t["debug_type"] in ["DW_TAG_const_type", "DW_TAG_typedef", "DW_TAG_member", "DW_TAG_subrange_type", "DW_TAG_volatile_type"]: if "name" in t and t["name"] == "mp_rom_obj_t": return {0: MEMORY_PY_OBJECT} return get_pointer_map(symbols_by_debug_address[t["type"]], depth+1) elif t["debug_type"] in ["DW_TAG_base_type", "DW_TAG_enumeration_type"]: return {} elif t["debug_type"] == "DW_TAG_union_type": # skip for now return {} elif "struct" in t: combined_map = {} for offset in t["struct"]: member = t["struct"][offset] submap = get_pointer_map(member) for suboffset in submap: combined_map[offset + suboffset] = submap[suboffset] return combined_map elif "subtype" in t: subtype = symbols_by_debug_address[t["type"]] pmap = get_pointer_map(subtype, depth+1) size = get_size(subtype) expanded_map = {} for i in range(t["maxlen"]): for offset in pmap: expanded_map[size * i + offset] = pmap[offset] return expanded_map else: print("no recurse", t) pass return {} # Do a second pass to dereference the types for symbol_address in symbols_by_memory_address: symbol = symbols_by_memory_address[symbol_address] if "type" in symbol: if symbol["debug_type"] == "DW_TAG_variable": symbol["pointer_map"] = get_pointer_map(symbols_by_debug_address[symbol["type"]]) type_string = [] t = symbol["type"] offset = [] while t != None: t_symbol = symbols_by_debug_address[t] t = t_symbol.get("type", None) if "name" in t_symbol: type_string.append(t_symbol["name"]) elif t_symbol["debug_type"] == "DW_TAG_array_type": type_string.append("[]") elif t_symbol["debug_type"] == "DW_TAG_pointer_type": type_string.append("*") elif t_symbol["debug_type"] == "DW_TAG_const_type": type_string.append("const") elif t_symbol["debug_type"] == "DW_TAG_volatile_type": type_string.append("volatile") else: #print(" ", t_symbol) pass type_string.reverse() symbol["type_string"] = " ".join(type_string) #print(symbol_name, symbol["debug_type"], symbol.get("type_string", "")) # print() # print() # print(all_symbols["mp_builtin_module_table"]) # return # Gather size and call info text_dump = objdump("-Dz", "-j", ".text", elf_filename) text_dump_lines = text_dump.stdout.decode("utf-8").split("\n") section = None symbol = None symbol_type = None for line in text_dump_lines[4:]: if line.startswith("Disassembly of section"): section = line.split()[-1].strip(":") elif not line: if symbol and "end_address" not in symbol: symbol["end_address"] = last_address symbol["size"] = last_address - symbol["start_address"] symbol = None continue elif line[0].isnumeric(): symbol_address, symbol_name = line.split() symbol_address = parse_hex(symbol_address) symbol_name = symbol_name.strip("<>:") if symbol_name in symbols_by_linkage_name: linked_name = symbol_name symbol = symbols_by_linkage_name[symbol_name] if "name" in symbol: non_linkage = symbol["name"] if not non_linkage.startswith("__builtin"): symbol_name = non_linkage all_symbols[symbol_name] = symbol if "name" not in symbol: symbol["name"] = symbol_name elif symbol_address in symbols_by_memory_address: all_symbols[symbol_name] = symbols_by_memory_address[symbol_address] if "name" not in all_symbols[symbol_name]: all_symbols[symbol_name]["name"] = symbol_name elif symbol_name not in all_symbols: if symbol_name == "nlr_push_tail_var": fake_type = all_symbols["mp_obj_get_type"]["type"] symbol = {"debug_type": "DW_TAG_variable", "name": symbol_name, "type": fake_type} else: print(line) print(symbol_name, symbol_address) symbol = {"debug_type": "DW_TAG_subprogram", "name": symbol_name} all_symbols[symbol_name] = symbol #raise RuntimeError() symbol = all_symbols[symbol_name] symbol["start_address"] = symbol_address symbols_by_memory_address[symbol_address] = symbol symbol["section"] = section if symbol["debug_type"] == "DW_TAG_subprogram": symbol["outgoing_jumps"] = set() symbol["incoming_jumps"] = set() symbol_type = None elif symbol["debug_type"] == "DW_TAG_variable": symbol["outgoing_pointers"] = set() symbol_type = symbols_by_debug_address[symbol["type"]] all_symbols[symbol_name] = symbol elif line[0] == " ": parts = line.strip().split() last_address = parse_hex(parts[0].strip(":")) offset = last_address - symbol["start_address"] if "pointer_map" in symbol: if offset not in symbol["pointer_map"]: #print(offset, symbol) pass else: ref = parse_hex(parts[1]) pointer_style = symbol["pointer_map"][offset] if pointer_style == MEMORY_POINTER: symbol["outgoing_pointers"].add(ref & 0xfffffffe) elif pointer_style == MEMORY_PY_OBJECT and ref & 0x3 == 0: symbol["outgoing_pointers"].add(ref) if len(parts[1]) == 8 and parts[1][0] == "0": addr = parse_hex(parts[1]) if 0x2000 <= addr < 0x20000000: if "outgoing_pointers" not in symbol: symbol["outgoing_pointers"] = set() symbol["outgoing_pointers"].add(addr) elif "<" in line and symbol["debug_type"] == "DW_TAG_subprogram": if line[-1] == ">": jump_to = parts[-1].strip("<>").split("+")[0] if "name" not in symbol: print(jump_to) print(symbol) if jump_to != symbol["name"] and jump_to not in BAD_JUMPS: symbol["outgoing_jumps"].add(jump_to) #print(symbol_name, jump_to) if jump_to == "_etext": print(line) elif "UNDEFINED" in line: continue elif parts[2] == "ldr": continue else: print(line) else: #print(line) pass # print() print(hex(min_call_site_param)) print(all_symbols["exception_table"]) # return print("converting outgoing pointers to names") # Convert outgoing pointers to names from addresses for symbol_name in all_symbols: symbol = all_symbols[symbol_name] if "outgoing_pointers" not in symbol: continue converted = set() for outgoing in symbol["outgoing_pointers"]: if outgoing in symbols_by_memory_address: outgoing = symbols_by_memory_address[outgoing] #print(outgoing) if outgoing["debug_type"] in ["DW_TAG_GNU_call_site", "DW_TAG_lexical_block"]: continue if outgoing["name"] == "audioio_wavefile_type": print(outgoing) converted.add(outgoing["name"]) symbol["outgoing_pointers"] = converted print("linking back") # Link back for symbol_name in all_symbols: symbol = all_symbols[symbol_name] if "outgoing_jumps" in symbol: for outgoing in symbol["outgoing_jumps"]: if outgoing not in all_symbols: #print(outgoing, symbol_name) continue #print(all_symbols[outgoing], symbol_name) referenced_symbol = all_symbols[outgoing] if "incoming_jumps" not in referenced_symbol: #print(symbol_name, "->", outgoing) referenced_symbol["incoming_jumps"] = set() referenced_symbol["incoming_jumps"].add(symbol_name) if "outgoing_pointers" in symbol: for outgoing in symbol["outgoing_pointers"]: if outgoing not in all_symbols: #print(outgoing, symbol_name) continue #print(all_symbols[outgoing], symbol_name) referenced_symbol = all_symbols[outgoing] if "incoming_pointers" not in referenced_symbol: #print(symbol_name, "->", outgoing) referenced_symbol["incoming_pointers"] = set() referenced_symbol["incoming_pointers"].add(symbol_name) print(all_symbols["exception_table"]) # Chart it all print("charting {} symbols".format(len(all_symbols))) callgraph = pgv.AGraph(directed=True) for i, symbol_name in enumerate(all_symbols): symbol = all_symbols[symbol_name] # print(i, symbol_name) # if "outgoing_jumps" in symbol: # print(" ", len(symbol["outgoing_jumps"]), "jumps") # if "outgoing_pointers" in symbol: # print(" ", len(symbol["outgoing_pointers"]), "ptrs") # if i > 3000: # break if ("incoming_jumps" not in symbol or len(symbol["incoming_jumps"]) == 0) and ("incoming_pointers" not in symbol or len(symbol["incoming_pointers"]) == 0): #print(symbol_name) continue if "start_address" not in symbol: continue callgraph.add_node(symbol_name) if "outgoing_jumps" in symbol: for outgoing in symbol["outgoing_jumps"]: callgraph.add_edge(symbol_name, outgoing) if "outgoing_pointers" in symbol: for outgoing in symbol["outgoing_pointers"]: callgraph.add_edge(symbol_name, outgoing, color="red") #print(symbol_name, symbol) # Style all of the nodes print("styling") for node in callgraph.iternodes(): if node.name not in all_symbols: continue symbol = all_symbols[node.name] node.attr["shape"] = "box" text_width_ish = len(node.name) * 0.1 if "size" not in symbol: print(symbol) size = symbol["size"] / 8 square_size = size ** 0.5 if text_width_ish > square_size: w = text_width_ish h = size / text_width_ish else: w = square_size h = square_size node.attr["width"] = w node.attr["height"] = h node.attr["label"] = node.name + "\r\n" + str(symbol["size"]) + " bytes" node.attr["style"] = "filled" incoming = 0 if "incoming_jumps" in symbol: incoming += len(symbol["incoming_jumps"]) if "incoming_pointers" in symbol: incoming += len(symbol["incoming_pointers"]) if node.name in SPECIAL_NODE_COLORS: node.attr["color"] = SPECIAL_NODE_COLORS[node.name] elif incoming == 1: node.attr["color"] = "lightblue" elif incoming > 25: print("delete", node.name, "because it has {} incoming".format(incoming)) callgraph.delete_node(node.name) elif incoming > 15: node.attr["color"] = "red" print("drawing") callgraph.layout(prog="dot") fn = "callgraph.svg" print(fn) callgraph.draw(fn) if __name__ == "__main__": do_all_the_things() |
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