3 # esp-idf alternative to "size" to print ELF file sizes, also analyzes
4 # the linker map file to dump higher resolution details.
6 # Includes information which is not shown in "xtensa-esp32-elf-size",
7 # or easy to parse from "xtensa-esp32-elf-objdump" or raw map files.
9 # Copyright 2017-2018 Espressif Systems (Shanghai) PTE LTD
11 # Licensed under the Apache License, Version 2.0 (the "License");
12 # you may not use this file except in compliance with the License.
13 # You may obtain a copy of the License at
15 # http://www.apache.org/licenses/LICENSE-2.0
17 # Unless required by applicable law or agreed to in writing, software
18 # distributed under the License is distributed on an "AS IS" BASIS,
19 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
20 # See the License for the specific language governing permissions and
21 # limitations under the License.
23 from __future__ import print_function
24 from __future__ import unicode_literals
25 from builtins import dict
26 import argparse, sys, subprocess, re
31 DEFAULT_TOOLCHAIN_PREFIX = "xtensa-esp32-elf-"
35 "total_iram" : 0x20000,
36 "total_irom" : 0x330000,
37 "total_drom" : 0x800000,
38 # total dram is determined from objdump output
42 def scan_to_header(f, header_line):
43 """ Scan forward in a file until you reach 'header_line', then return """
45 if line.strip() == header_line:
47 raise RuntimeError("Didn't find line '%s' in file" % header_line)
49 def load_map_data(map_file):
50 memory_config = load_memory_config(map_file)
51 sections = load_sections(map_file)
52 return memory_config, sections
54 def load_memory_config(map_file):
55 """ Memory Configuration section is the total size of each output section """
57 scan_to_header(map_file, "Memory Configuration")
58 RE_MEMORY_SECTION = r"(?P<name>[^ ]+) +0x(?P<origin>[\da-f]+) +0x(?P<length>[\da-f]+)"
60 m = re.match(RE_MEMORY_SECTION, line)
63 continue # whitespace or a header, before the content we want
65 return result # we're at the end of the Memory Configuration
67 "name" : m.group("name"),
68 "origin" : int(m.group("origin"), 16),
69 "length" : int(m.group("length"), 16),
71 if section["name"] != "*default*":
72 result[section["name"]] = section
73 raise RuntimeError("End of file while scanning memory configuration?")
75 def load_sections(map_file):
76 """ Load section size information from the MAP file.
78 Returns a dict of 'sections', where each key is a section name and the value
79 is a dict with details about this section, including a "sources" key which holds a list of source file line information for each symbol linked into the section.
81 scan_to_header(map_file, "Linker script and memory map")
82 scan_to_header(map_file, "END GROUP")
87 # output section header, ie '.iram0.text 0x0000000040080400 0x129a5'
88 RE_SECTION_HEADER = r"(?P<name>[^ ]+) +0x(?P<address>[\da-f]+) +0x(?P<size>[\da-f]+)$"
89 m = re.match(RE_SECTION_HEADER, line)
90 if m is not None: # start of a new section
92 "name" : m.group("name"),
93 "address" : int(m.group("address"), 16),
94 "size" : int(m.group("size"), 16),
97 sections[section["name"]] = section
100 # source file line, ie
101 # 0x0000000040080400 0xa4 /home/gus/esp/32/idf/examples/get-started/hello_world/build/esp32/libesp32.a(cpu_start.o)
102 RE_SOURCE_LINE = r"\s*(?P<sym_name>\S*).* +0x(?P<address>[\da-f]+) +0x(?P<size>[\da-f]+) (?P<archive>.+\.a)\((?P<object_file>.+\.o)\)"
104 m = re.match(RE_SOURCE_LINE, line, re.M)
105 if section is not None and m is not None: # input source file details
106 sym_name = m.group("sym_name") if len(m.group("sym_name")) > 0 else sym_backup
108 "size" : int(m.group("size"), 16),
109 "address" : int(m.group("address"), 16),
110 "archive" : os.path.basename(m.group("archive")),
111 "object_file" : m.group("object_file"),
112 "sym_name" : sym_name,
114 source["file"] = "%s:%s" % (source["archive"], source["object_file"])
115 section["sources"] += [ source ]
117 # In some cases the section name appears on the previous line, back it up in here
118 RE_SYMBOL_ONLY_LINE = r"^ (?P<sym_name>\S*)$"
119 m = re.match(RE_SYMBOL_ONLY_LINE, line)
120 if section is not None and m is not None:
121 sym_backup = m.group("sym_name")
125 def sizes_by_key(sections, key):
126 """ Takes a dict of sections (from load_sections) and returns
127 a dict keyed by 'key' with aggregate output size information.
129 Key can be either "archive" (for per-archive data) or "file" (for per-file data) in the result.
132 for section in sections.values():
133 for s in section["sources"]:
134 if not s[key] in result:
136 archive = result[s[key]]
137 if not section["name"] in archive:
138 archive[section["name"]] = 0
139 archive[section["name"]] += s["size"]
143 parser = argparse.ArgumentParser("idf_size - a tool to print IDF elf file sizes")
146 '--toolchain-prefix',
147 help="Triplet prefix to add before objdump executable",
148 default=DEFAULT_TOOLCHAIN_PREFIX)
151 'map_file', help='MAP file produced by linker',
152 type=argparse.FileType('r'))
155 '--archives', help='Print per-archive sizes', action='store_true')
158 '--archive_details', help='Print detailed symbols per archive')
161 '--files', help='Print per-file sizes', action='store_true')
163 args = parser.parse_args()
165 memory_config, sections = load_map_data(args.map_file)
166 print_summary(memory_config, sections)
169 print("Per-archive contributions to ELF file:")
170 print_detailed_sizes(sections, "archive", "Archive File")
172 print("Per-file contributions to ELF file:")
173 print_detailed_sizes(sections, "file", "Object File")
174 if args.archive_details:
175 print("Symbols within the archive:", args.archive_details, "(Not all symbols may be reported)")
176 print_archive_symbols(sections, args.archive_details)
178 def print_summary(memory_config, sections):
179 def get_size(section):
181 return sections[section]["size"]
185 # if linker script changes, these need to change
186 total_iram = memory_config["iram0_0_seg"]["length"]
187 total_dram = memory_config["dram0_0_seg"]["length"]
188 used_data = get_size(".dram0.data")
189 used_bss = get_size(".dram0.bss")
190 used_dram = used_data + used_bss
191 used_iram = sum( get_size(s) for s in sections if s.startswith(".iram0") )
192 flash_code = get_size(".flash.text")
193 flash_rodata = get_size(".flash.rodata")
194 total_size = used_data + used_iram + flash_code + flash_rodata
196 print("Total sizes:")
197 print(" DRAM .data size: %7d bytes" % used_data)
198 print(" DRAM .bss size: %7d bytes" % used_bss)
199 print("Used static DRAM: %7d bytes (%7d available, %.1f%% used)" %
200 (used_dram, total_dram - used_dram,
201 100.0 * used_dram / total_dram))
202 print("Used static IRAM: %7d bytes (%7d available, %.1f%% used)" %
203 (used_iram, total_iram - used_iram,
204 100.0 * used_iram / total_iram))
205 print(" Flash code: %7d bytes" % flash_code)
206 print(" Flash rodata: %7d bytes" % flash_rodata)
207 print("Total image size:~%7d bytes (.bin may be padded larger)" % (total_size))
209 def print_detailed_sizes(sections, key, header):
210 sizes = sizes_by_key(sections, key)
220 print("%24s %10s %6s %6s %10s %8s %7s" % headings)
225 result[k]["data"] = v.get(".dram0.data", 0)
226 result[k]["bss"] = v.get(".dram0.bss", 0)
227 result[k]["iram"] = sum(t for (s,t) in v.items() if s.startswith(".iram0"))
228 result[k]["flash_text"] = v.get(".flash.text", 0)
229 result[k]["flash_rodata"] = v.get(".flash.rodata", 0)
230 result[k]["total"] = sum(result[k].values())
232 def return_total_size(elem):
235 def return_header(elem):
237 s = sorted(list(result.items()), key=return_header)
238 # do a secondary sort in order to have consistent order (for diff-ing the output)
239 for k,v in sorted(s, key=return_total_size, reverse=True):
240 if ":" in k: # print subheadings for key of format archive:file
242 print("%24s %10d %6d %6d %10d %8d %7d" % (k[:24],
250 def print_archive_symbols(sections, archive):
251 interested_sections = [".dram0.data", ".dram0.bss", ".iram0.text", ".iram0.vectors", ".flash.text", ".flash.rodata"]
253 for t in interested_sections:
255 for section in sections.values():
256 section_name = section["name"]
257 if section_name not in interested_sections:
259 for s in section["sources"]:
260 if archive != s["archive"]:
262 s["sym_name"] = re.sub("(.text.|.literal.|.data.|.bss.|.rodata.)", "", s["sym_name"]);
263 result[section_name][s["sym_name"]] = result[section_name].get(s["sym_name"], 0) + s["size"]
264 for t in interested_sections:
265 print("\nSymbols from section:", t)
267 s = sorted(list(result[t].items()), key=lambda k_v: k_v[0])
268 # do a secondary sort in order to have consistent order (for diff-ing the output)
269 for key,val in sorted(s, key=lambda k_v: k_v[1], reverse=True):
270 print(("%s(%d)"% (key.replace(t + ".", ""), val)), end=' ')
272 print("\nSection total:",section_total)
274 if __name__ == "__main__":