".flash.rodata" section is reported by readelf as writable
Posted: Tue Jun 13, 2023 1:04 pm
Hi there!
For some reason xtensa-esp32-elf-readelf reports the ".flash.rodata" section with the "WA" flags that means W (write), A (alloc):
According to the default linker script for sections https://github.com/espressif/esp-idf/bl ... ld.in#L363 the ".flash.rodata" section is located in the "default_rodata_seg" segment which is an alias for "drom0_0_seg". According to default memory LD script the "drom0_0_seg" segment is set as READONLY https://github.com/espressif/esp-idf/bl ... .ld.in#L86
Am I missing something or this is intended behavior?
Additional info:
ESP-IDF version: 5.0.2
Host OS: Windows 10
Devboard: ESP32-DevKitC
Toolchain version: 11.2.0-2022r1
Full output with initial command:
Thanks in advance!
For some reason xtensa-esp32-elf-readelf reports the ".flash.rodata" section with the "WA" flags that means W (write), A (alloc):
Code: Select all
.flash.rodata PROGBITS 3f400120 001120 0079c4 00 WA 0 0 16Code: Select all
drom0_0_seg (R) : org = 0x3F400020, len = 0x400000-0x20
Additional info:
ESP-IDF version: 5.0.2
Host OS: Windows 10
Devboard: ESP32-DevKitC
Toolchain version: 11.2.0-2022r1
Full output with initial command:
Code: Select all
xtensa-esp32-elf-readelf.exe -S d:\esp-idf-v5.0\examples\get-started\hello_world\build\hello_world.elf
There are 40 section headers, starting at offset 0x24e288:
Section Headers:
[Nr] Name Type Addr Off Size ES Flg Lk Inf Al
[ 0] NULL 00000000 000000 000000 00 0 0 0
[ 1] .rtc.text PROGBITS 400c0000 02e010 000000 00 W 0 0 1
[ 2] .rtc.dummy PROGBITS 3ff80000 02e010 000000 00 W 0 0 1
[ 3] .rtc.force_fast PROGBITS 3ff80000 02e010 000000 00 W 0 0 1
[ 4] .rtc.data PROGBITS 50000000 02e000 000010 00 WA 0 0 8
[ 5] .rtc_noinit PROGBITS 50000010 02e010 000000 00 W 0 0 1
[ 6] .rtc.force_slow PROGBITS 50000010 02e010 000000 00 W 0 0 1
[ 7] .iram0.vectors PROGBITS 40080000 00c000 000403 00 AX 0 0 4
[ 8] .iram0.text PROGBITS 40080404 00c404 00b543 00 AX 0 0 4
[ 9] .dram0.data PROGBITS 3ffb0000 009000 002628 00 WA 0 0 16
[10] .ext_ram_noinit PROGBITS 3f800000 02e010 000000 00 W 0 0 1
[11] .noinit PROGBITS 3ffb2628 02e010 000000 00 W 0 0 1
[12] .ext_ram.bss PROGBITS 3f800000 02e010 000000 00 W 0 0 1
[13] .dram0.bss NOBITS 3ffb2628 00b628 0008e8 00 WA 0 0 8
[14] .flash.appdesc PROGBITS 3f400020 001020 000100 00 A 0 0 16
[15] .flash.rodata PROGBITS 3f400120 001120 0079c4 00 WA 0 0 16
[16] .flash.rodat[...] PROGBITS 3f407ae4 02e010 000000 00 W 0 0 1
[17] .flash.text PROGBITS 400d0020 018020 01577f 00 AX 0 0 4
[18] .iram0.text_end NOBITS 4008b947 017947 000001 00 WA 0 0 1
[19] .iram0.data PROGBITS 4008b948 02e010 000000 00 W 0 0 1
[20] .iram0.bss PROGBITS 4008b948 02e010 000000 00 W 0 0 1
[21] .dram0.heap_start PROGBITS 3ffb2f10 02e010 000000 00 W 0 0 1
[22] .xt.prop PROGBITS 00000000 02e010 01ccd4 00 0 0 1
[23] .xt.lit PROGBITS 00000000 04ace4 000c00 00 0 0 1
[24] .xtensa.info NOTE 00000000 04b8e4 000038 00 0 0 1
[25] .comment PROGBITS 00000000 04b91c 000066 01 MS 0 0 1
[26] .debug_frame PROGBITS 00000000 04b984 008b10 00 0 0 4
[27] .debug_info PROGBITS 00000000 054494 0ce710 00 0 0 1
[28] .debug_abbrev PROGBITS 00000000 122ba4 01a3df 00 0 0 1
[29] .debug_loc PROGBITS 00000000 13cf83 0343f4 00 0 0 1
[30] .debug_aranges PROGBITS 00000000 171378 0039a0 00 0 0 8
[31] .debug_ranges PROGBITS 00000000 174d18 0038b0 00 0 0 8
[32] .debug_line PROGBITS 00000000 1785c8 09b017 00 0 0 1
[33] .debug_str PROGBITS 00000000 2135df 01a244 01 MS 0 0 1
[34] .debug_loclists PROGBITS 00000000 22d823 00dd90 00 0 0 1
[35] .debug_rnglists PROGBITS 00000000 23b5b3 0003a4 00 0 0 1
[36] .debug_line_str PROGBITS 00000000 23b957 0016ad 01 MS 0 0 1
[37] .symtab SYMTAB 00000000 23d004 0099b0 10 38 1359 4
[38] .strtab STRTAB 00000000 2469b4 0076e1 00 0 0 1
[39] .shstrtab STRTAB 00000000 24e095 0001f1 00 0 0 1
Key to Flags:
W (write), A (alloc), X (execute), M (merge), S (strings), I (info),
L (link order), O (extra OS processing required), G (group), T (TLS),
C (compressed), x (unknown), o (OS specific), E (exclude),
p (processor specific)