I was going through the assembly code generated by the compiler. I am using the C programming language and GCC compiler.
I wrote a function in C which adds two numbers by calling another function and stores the result in the variable pointed to by the pointer passed as an argument to the function.
void add_two_num(int x, int y, int * dest){ int val; val = dummy(x, y); *dest = val;}I compiled the source code to object code (linking not done) and then disassembled the code using objdump -d
What is the meaning of the number +0x9 in the line call d <add_two_num+0x9>?
Is that useful at the stage of linking when that line will be replaced by the actual function call?
file format elf64-x86-640000000000000004 <add_two_num>: 4: 53 push %rbx 5: 48 89 d3 mov %rdx,%rbx 8: e8 00 00 00 00 call d <add_two_num+0x9> d: 89 03 mov %eax,(%rbx) f: 5b pop %rbx 10: c3 ret 
