The Memory Layout of a C Program | Data Structures in Embedded Systems

[@koppakabhagavan2848]

Nice information Congratulations and heartful appreciation for "Embedded in pyjama" team for the efforts to create content on Embedded systems.

[@inpyjama]

Thanks a lot, Let us know what else would you love to watch !!

[@AkashNayak-i4w]

Crisp and efficient lecture. Thanks.

[@KarunaRudresh]

Detailed and clear explanation 🙌👏 Looking forward for all the upcoming advanced topics :)

[@tusharvyavahare]

Simple yet clean explanation 👌

[@mohansaini5583]

Hi dev.. Nice explanation . Will be good if you cover some more advanced topics like read only data segment and how string litrals(char *) and const var are stored and these memory freed

[@amanchoudhary1586]

Very nicely explained. ❤

[@Sai-Akula]

Great explanation 𝗗𝗲𝘃, cleanly explained with example At some point in the series could you kindly explain about ELF format details (covering File, Program, Section - header(s), DWARF)

[@giovanniguarino588]

Thank you. One question. In a memory debugger, IDRA, X64 how can I individuate the heap and the stack

[@nitpal9958]

@13:49 Aren't global/static variables that are explicitly initialized to 0 (like the variables c and r in your example) stored in the bss segment? Please correct me if I am wrong

[@inpyjama]

Global uninitialized variables are stored in BSS section & global initialized variables are stored in data section.

[@nitpal9958]

@@inpyjama but wouldn't it be more memory efficient to store 0-initialized global/static variables in the BSS section?

[@harshithramamurthy2820]

Nicely explained 👌🏽

[@kedar9591]

Sir please upload next lectures ASAP

[@donythomas7]

Thank you, one query. Does the executable binary file contain (in addition to the code) instructions for segregating the allocated memory in to 5 sections? Otherwise, whose responsibility is it to segregate the allocated memory in to 5 sections?

[@pranjalk29]

It's done by os.

[@donythomas7]

@@pranjalk29As the os is generic in nature, who gives instructions to the os to segregate the memory in a particular manner? Those instructions should be included in the executable, right?

[@inpyjama]

From what I know the loader uses the information in the ELF to create a PCB (process control block) and add into the schedule queue of an higher level OS. I don't have a source of truth for this at the moment but I have a strong feeling the loader does this. - Piyush

[@SudhirPatel46]

Hello, I have a doubt regarding the address that all the sections of an executable is assigned. Let say the all the segments of the binary gets the address by the linker but how does it know that the assigned address is not being used by some other process already, does it do some kind of preemption when the process is loaded or there is something else I am missing??

[@inpyjama]

Another good question. This is the exact problem which is solved my virtual addressing. All the applications will run thinking they own the complete system and not bother about address clashing (the addresses are virtual). It is the job of Operating system to convert the virtual addresses of all such applications into physical addresses (they maintain a table of virtual to physical addresses translation per application/process). We are planning to cover memory management and these translation in detail in future videos. Stay tuned :)

[@MAShams1]

Awesome, it would be much better if you shared with us the pdf to be as a revision ❤

[@inpyjama]

Thanks MAShams1, Definitely will do that !!

[@MDIMRAN-zy9cb]

Good explanation.

[@deveshshevde-cp8xq]

hello sir , I have a doubt regarding c/c++ , I am into embedded system so how can I fine tune my c skill at this point of time I am struggling in c ( runs on mcu) as there are not much scope to practice ..for example :- I wrote a control algorithm for xyz things now I need data logging feature so now I got stuck into fatfs things like is it normal to struggle this much in new things? and tell me something to fine tune my emb c skills

[@inpyjama]

Hi Devesh, You can go through our podcast and Lab videos here www.youtube.com/@inpyjama. Are you trying to boot and enable some uart logging or something?

[@hugeturnip3520]

Thank you so so much man

[@Shiva.Sareddy]

volume is very low

[@suffiyanshaikh2127]

Volume is very much low in the video not able to hear with earphones as well.

[@inpyjama]

Will work on it

[@anassadkaoui1]

Awesome