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 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 import argparse, sys, subprocess, re
27 DEFAULT_TOOLCHAIN_PREFIX = "xtensa-esp32-elf-"
31 "total_iram" : 0x20000,
32 "total_irom" : 0x330000,
33 "total_drom" : 0x800000,
34 # total dram is determined from objdump output
38 def scan_to_header(f, header_line):
39 """ Scan forward in a file until you reach 'header_line', then return """
41 if line.strip() == header_line:
43 raise RuntimeError("Didn't find line '%s' in file" % header_line)
45 def load_map_data(map_file):
46 memory_config = load_memory_config(map_file)
47 sections = load_sections(map_file)
48 return memory_config, sections
50 def output_section_for_address(memory_config, address):
51 for m in memory_config.values():
52 if m["origin"] <= address and m["origin"] + m["length"] > address:
56 def load_memory_config(map_file):
57 """ Memory Configuration section is the total size of each output section """
59 scan_to_header(map_file, "Memory Configuration")
60 RE_MEMORY_SECTION = r"(?P<name>[^ ]+) +0x(?P<origin>[\da-f]+) +0x(?P<length>[\da-f]+)"
62 m = re.match(RE_MEMORY_SECTION, line)
65 continue # whitespace or a header, before the content we want
67 return result # we're at the end of the Memory Configuration
69 "name" : m.group("name"),
70 "origin" : int(m.group("origin"), 16),
71 "length" : int(m.group("length"), 16),
73 if section["name"] != "*default*":
74 result[section["name"]] = section
75 raise RuntimeError("End of file while scanning memory configuration?")
77 def load_sections(map_file):
78 """ Load section size information from the MAP file.
80 Returns a dict of 'sections', where each key is a section name and the value
81 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.
83 scan_to_header(map_file, "Linker script and memory map")
84 scan_to_header(map_file, "END GROUP")
89 # output section header, ie '.iram0.text 0x0000000040080400 0x129a5'
90 RE_SECTION_HEADER = r"(?P<name>[^ ]+) +0x(?P<address>[\da-f]+) +0x(?P<size>[\da-f]+)$"
91 m = re.match(RE_SECTION_HEADER, line)
92 if m is not None: # start of a new section
94 "name" : m.group("name"),
95 "address" : int(m.group("address"), 16),
96 "size" : int(m.group("size"), 16),
99 sections[section["name"]] = section
102 # source file line, ie
103 # 0x0000000040080400 0xa4 /home/gus/esp/32/idf/examples/get-started/hello_world/build/esp32/libesp32.a(cpu_start.o)
104 RE_SOURCE_LINE = r"\s*(?P<sym_name>\S*).* +0x(?P<address>[\da-f]+) +0x(?P<size>[\da-f]+) (?P<archive>.+\.a)\((?P<object_file>.+\.o)\)"
106 m = re.match(RE_SOURCE_LINE, line, re.M)
107 if section is not None and m is not None: # input source file details
108 sym_name = m.group("sym_name") if len(m.group("sym_name")) > 0 else sym_backup
110 "size" : int(m.group("size"), 16),
111 "address" : int(m.group("address"), 16),
112 "archive" : os.path.basename(m.group("archive")),
113 "object_file" : m.group("object_file"),
114 "sym_name" : sym_name,
116 source["file"] = "%s:%s" % (source["archive"], source["object_file"])
117 section["sources"] += [ source ]
119 # In some cases the section name appears on the previous line, back it up in here
120 RE_SYMBOL_ONLY_LINE = r"^ (?P<sym_name>\S*)$"
121 m = re.match(RE_SYMBOL_ONLY_LINE, line)
122 if section is not None and m is not None:
123 sym_backup = m.group("sym_name")
127 def sizes_by_key(sections, key):
128 """ Takes a dict of sections (from load_sections) and returns
129 a dict keyed by 'key' with aggregate output size information.
131 Key can be either "archive" (for per-archive data) or "file" (for per-file data) in the result.
134 for section in sections.values():
135 for s in section["sources"]:
136 if not s[key] in result:
138 archive = result[s[key]]
139 if not section["name"] in archive:
140 archive[section["name"]] = 0
141 archive[section["name"]] += s["size"]
145 parser = argparse.ArgumentParser("idf_size - a tool to print IDF elf file sizes")
148 '--toolchain-prefix',
149 help="Triplet prefix to add before objdump executable",
150 default=DEFAULT_TOOLCHAIN_PREFIX)
153 'map_file', help='MAP file produced by linker',
154 type=argparse.FileType('r'))
157 '--archives', help='Print per-archive sizes', action='store_true')
160 '--archive_details', help='Print detailed symbols per archive')
163 '--files', help='Print per-file sizes', action='store_true')
165 args = parser.parse_args()
167 memory_config, sections = load_map_data(args.map_file)
168 print_summary(memory_config, sections)
171 print("Per-archive contributions to ELF file:")
172 print_detailed_sizes(sections, "archive", "Archive File")
174 print("Per-file contributions to ELF file:")
175 print_detailed_sizes(sections, "file", "Object File")
176 if args.archive_details:
177 print "Symbols within the archive:", args.archive_details, "(Not all symbols may be reported)"
178 print_archive_symbols(sections, args.archive_details)
180 def print_summary(memory_config, sections):
181 def get_size(section):
183 return sections[section]["size"]
187 # if linker script changes, these need to change
188 total_iram = memory_config["iram0_0_seg"]["length"]
189 total_dram = memory_config["dram0_0_seg"]["length"]
190 used_data = get_size(".dram0.data")
191 used_bss = get_size(".dram0.bss")
192 used_dram = used_data + used_bss
193 used_iram = sum( get_size(s) for s in sections.keys() if s.startswith(".iram0") )
194 flash_code = get_size(".flash.text")
195 flash_rodata = get_size(".flash.rodata")
196 total_size = used_data + used_iram + flash_code + flash_rodata
198 print("Total sizes:")
199 print(" DRAM .data size: %7d bytes" % used_data)
200 print(" DRAM .bss size: %7d bytes" % used_bss)
201 print("Used static DRAM: %7d bytes (%7d available, %.1f%% used)" %
202 (used_dram, total_dram - used_dram,
203 100.0 * used_dram / total_dram))
204 print("Used static IRAM: %7d bytes (%7d available, %.1f%% used)" %
205 (used_iram, total_iram - used_iram,
206 100.0 * used_iram / total_iram))
207 print(" Flash code: %7d bytes" % flash_code)
208 print(" Flash rodata: %7d bytes" % flash_rodata)
209 print("Total image size:~%7d bytes (.bin may be padded larger)" % (total_size))
211 def print_detailed_sizes(sections, key, header):
212 sizes = sizes_by_key(sections, key)
222 print("%24s %10s %6s %6s %10s %8s %7s" % headings)
223 for k in sorted(sizes.keys()):
225 if ":" in k: # print subheadings for key of format archive:file
227 if sh != sub_heading:
231 data = v.get(".dram0.data", 0)
232 bss = v.get(".dram0.bss", 0)
233 iram = sum(t for (s,t) in v.items() if s.startswith(".iram0"))
234 flash_text = v.get(".flash.text", 0)
235 flash_rodata = v.get(".flash.rodata", 0)
236 total = data + bss + iram + flash_text + flash_rodata
237 print("%24s %10d %6d %6d %10d %8d %7d" % (k[:24],
245 def print_archive_symbols(sections, archive):
246 interested_sections = [".dram0.data", ".dram0.bss", ".iram0.text", ".iram0.vectors", ".flash.text", ".flash.rodata"]
248 for t in interested_sections:
250 for section in sections.values():
251 section_name = section["name"]
252 if section_name not in interested_sections:
254 for s in section["sources"]:
255 if archive != s["archive"]:
257 s["sym_name"] = re.sub("(.text.|.literal.|.data.|.bss.|.rodata.)", "", s["sym_name"]);
258 result[section_name][s["sym_name"]] = result[section_name].get(s["sym_name"], 0) + s["size"]
259 for t in interested_sections:
260 print "\nSymbols from section:", t
262 for key,val in sorted(result[t].items(), key=lambda (k,v): v, reverse=True):
263 print("%s(%d)"% (key.replace(t + ".", ""), val)),
265 print "\nSection total:",section_total
267 if __name__ == "__main__":