How to get Data Segment Size in C++

Question

I need to do analysis of memory requirements of one library written in C++, because HW engineers need get some idea about memory requirements of our hardware, there are working on. I can measure heapsize peak, I can measure stack size, but I don't know how to estimate/measure data segment size and Bss size. Is there any method in Visual Studio or GCC? I assume it will differs from compiler to compiler and from platform to platform, but an estimation is fine for me.

Have you tried just cross-compiling to your target platform and checking the produced binaries? — harald
– harald, Commented Mar 2, 2015 at 13:23
GCC (pedantically, GNU binutils) has a tool called size for this. — Mike Seymour
– Mike Seymour, Commented Mar 2, 2015 at 13:28
I can cross-compile it for ARM in IAR Workbench. Do you mean that it should be possible to detect this from this IDE/tool somehow? — Tomas Kubes
– Tomas Kubes, Commented Mar 2, 2015 at 13:29

Andrey Derevyanko · Accepted Answer · 2015-03-02 13:28:00Z

4

There is a size utility. E.g. for ARM MCU project it can be something like:

arm-none-eabi-size --format=sysv "program_name.elf"

Example output:

program_name.elf  :
section             size        addr
.text              14516           0
.data                160   268435456
.bss                1328   268435616
.stack              2528   268436944
.debug_aranges      2384           0
.debug_info        40951           0
.debug_abbrev       8870           0
.debug_line        27790           0
.debug_frame        6664           0
.debug_str         42157           0
.debug_loc          7074           0
.debug_macinfo    426030           0
.ARM.attributes       47           0
.debug_ranges       1760           0
.comment              96           0
.debug_macro        9236           0
Total             591591

answered Mar 2, 2015 at 13:28

Andrey Derevyanko

5605 silver badges12 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Remus Rusanu · Accepted Answer · 2015-03-02 13:28:11Z

2

During the build:

For VC++ run link.exe /map.
For GCC run ld -Map.

Both options generate a map file which will contain the segment sizes.

answered Mar 2, 2015 at 13:28

Remus Rusanu

296k42 gold badges459 silver badges583 bronze badges

Comments

Community · Accepted Answer · 2017-05-23 11:47:35Z

2

You can use objdump to get the size of the text, data and bss segments on Linux systems. You can examine the output for the .bss and .text sections.

See here for a more detailed explanation.

edited May 23, 2017 at 11:47

CommunityBot

11 silver badge

answered Mar 2, 2015 at 13:30

Alexandru C.

3,3942 gold badges27 silver badges28 bronze badges

Collectives™ on Stack Overflow

How to get Data Segment Size in C++

3 Answers 3

Comments

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related