FUNCTION SIGNATURES

function signatures uniquely identifies a function within a program or module. it refers to the specific way a function is defined, including details about its name, return type, parameters, and additional attributes. ghidra can help fix function signature's to greatly improve decompiler output.

root@sre:~$ man {scanf}
 ...
 
 * the output will display the function signature for the specified C functions
    - doesn't work on "main()" as there is no manual for it

root@sre:~$ ./ghidra
ghidra > decompile > right-click the {functionName} > Edit Function Signature
 name: {undefined main(int argc, char **argv)}
  
 * only modify the area where the Application Binary Interface (ABI) is constant in the ABI
    - ABI is a standard that defines how application programs interact with the 
      operating system at the binary level. It specifies conventions for calling 
      functions, passing arguments, returning values, and handling system calls, 
      ensuring compatibility between different software components on 
      Unix-like operating systems
       - Windows/Microsoft have its own ABI for it OS