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Anatomy of an ELF executable

kishuagarwal.github.io

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Re: Anatomy of an ELF executable

#12

Post by saagarjha »

> You can ignore the directives starting with cfi. They are used for call stack unwinding in case of exceptions.

It might be worth compiling with -fno-asynchronous-unwind-tables, which will get rid of those.

Re: Anatomy of an ELF executable

#13

Post by kishu18 »

saagarjha wrote: post #12

> You can ignore the directives starting with cfi. They are used for call stack unwinding in case of exceptions. It might be worth compiling with -fno-asynchronous-unwind-tables, which will get rid of those.

Thanks for the suggestion. Do you have any good reference for reading about this feature?

Re: Anatomy of an ELF executable

#14

Post by saagarjha »

kishu18 wrote: post #13
saagarjha wrote: post #12

> You can ignore the directives starting with cfi. They are used for call stack unwinding in case of exceptions. It might be worth compiling with -fno-asynchronous-unwind-tables, which will get rid of those.

Thanks for the suggestion. Do you have any good reference for reading about this feature?

GCC's option page lists what it does: https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html. However, it's not all that obvious that this is the flag that controls whether the "cfi" labels are emitted. Here's a more general Stack Overflow question about creating nice assembly output: https://stackoverflow.com/questions/38552116/how-to-remove-n...

Re: Anatomy of an ELF executable

#15

Post by kishu18 »

saagarjha wrote: post #14
kishu18 wrote: post #13

Earlier quoted context omitted.

Thanks for the suggestion. Do you have any good reference for reading about this feature?

GCC's option page lists what it does: https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html . However, it's not all that obvious that this is the flag that controls whether the "cfi" labels are emitted. Here's a more general Stack Overflow question about creating nice assembly output: https://stackoverflow.com/questions/38552116/how-to-remove-n...

Nice. Thanks for sharing the stackoverflow link. Will check that.

Re: Anatomy of an ELF executable

#20

Post by sara12386 »

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