Disassembly of a simple C program and analysis

Disassembly of a simple C program and analysis

C Source:

int g(int x){    return x+1;}int f(int x){    return g(x);}int main(void){    return f(2) + 3;}

Compilation Source:

1 g:2   pushl   %ebp3   movl    %esp, %ebp4   movl    8(%ebp), %eax5   addl    $1, %eax6   popl    %ebp7   ret8 f:9   pushl   %ebp10  movl    %esp, %ebp11  subl    $4, %esp12  movl    8(%ebp), %eax13  movl    %eax, (%esp)14  call    g15  leave16  ret17 main:18  pushl   %ebp19  movl    %esp, %ebp20  subl    $4, %esp21  movl    $2, (%esp)22  call    f23  addl    $3, %eax24  leave25  ret

Execution process: (starting from main)

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July 03,2015

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Disassembly of a simple C program and analysis