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Silva97
/ get-function-size.c
Created
July 11, 2021 15:45
Just an example of how to get the size of a function in bytes using the GCC compiler
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| // See how it's works using: gcc -S get-function-size.c -o get-function-size.s | |
| // To manually check function size: objdump -d get-function-size | |
| #include <stdio.h> | |
| #define DECLARE_FUNCSIZE(funcname) \ | |
| extern unsigned int funcname##_funcsize; \ | |
| asm(#funcname "_funcsize: .long . - " #funcname "\n\t") | |
| #define FUNCSIZE(funcname) \ | |
| funcname##_funcsize |