#include <stdio.h>
 
void foo(void);
void bar(void);
void print_function_instructions(void *func_ptr, size_t func_len);
 
int main(void) {
    void *foo_addr = (void*)foo;
    void *bar_addr = (void*)bar;
 
    print_function_instructions(foo_addr, bar_addr - foo_addr);
 
    return 0;
}
 
void foo(void) {
    int i=0;
    i++;
    printf("i: %d\n", i);
}
 
void bar(void) {
	printf("something");
}
 
void print_function_instructions(void *func_ptr, size_t func_len) {
	unsigned char i=0;
    for(i; i<func_len; i++) {
        unsigned char *instruction = (unsigned char*)func_ptr+i;
        printf("%p (%2u): %x\n", func_ptr+i, i, *instruction);
    }
}

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