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Sample codes for assembly, linker and attack demos This is a repo for simple demo usage of GNU assembly and NASM (for entry-level student).

Rule

• *.asm is NASM source code file
• *.s is GNU Assembly (i.e., GAS) source code file
• *.nasm.o is NASM object file
• *.gas.o is GAS object file
• *.nasm is NASM executable file
• *.gas is GAS executable file

Calling an assembly function in C source

• See as_and_c
• I briefly implemented how to call ASM function in C file, and how to call C function in ASM file.

In-line assembly in C source

• See as_in_c
• I briefly implemented how to get values of registers into a local variable.