I want to clear all temporary and local variables after execution of a function so as not to leave a trace.
I think clearing registers, local variables could easily be done by assigning them to 0.
Hovewer, Althhough I use these linker options
ASM produces some temporary variables like:
Also, I ask the solution to temporary variables.
Do I miss anything else that a function could use?
How can I be sure that function clears everything it used?
Thanks in advance.
You can clear the registers by using inline assembly.
And if you make the function __reentrant all local and temporary variables will be placed on the stack. Again in assembly you can clear everything between BP+1 and SP.