$ docker run -it weli/docker-assembly-gef-pyenv bash

$ docker run -it --privileged weli/docker-assembly-gef-pyenv bash

$ pwd
/root

$ ls
foo.asm

$ cat foo.asm
global _start
_start:
  mov eax, 1
  mov ebx, 5
  int 0x80

$ yasm -f elf64 -g dwarf2 -l foo.lst foo.asm

$ ls
foo.asm  foo.lst  foo.o

$ ld -o foo foo.o
$ ls foo
foo

$ ./foo
$ echo $?
5

$ pwd
/root

$ ls
foo      foo.asm  foo.lst  foo.o

bash-5.0# gdb -q foo
GEF for linux ready, type `gef' to start, `gef config' to configure
80 commands loaded for GDB 8.3 using Python engine 3.7
Reading symbols from foo...
gef➤  list
1	global _start
2	_start:
3	  mov eax, 1
4	  mov ebx, 5
5	  int 0x80
6
gef➤

$ pwd
/root

$ ls asm.c
asm.c

$ cat asm.c
#include <stdio.h>
int main(void)
{
        int foo = 10, bar = 15;
        __asm__ __volatile__("addl  %%ebx,%%eax"
                             :"=a"(foo)
                             :"a"(foo), "b"(bar)
                             );
        printf("foo+bar=%d\n", foo);
        return 0;
}

$ cc -g asm.c -o asm
$ ls asm
asm

$ ./asm
foo+bar=25