System call return value

The return value from a system call is placed in the EAX register. It is your job to check the value in the EAX register, especially for failure conditions.

.section .bss.lcomm pid, 4.lcomm uid, 4.lcomm gid, 4.section .text.globl _start_start:movl $20, %eaxint $0x80movl %eax, pidmovl $24, %eaxint $0x80movl %eax, uidmovl $47, %eaxint $0x80movl %eax, gidend:movl $1, %eaxmovl $0, %ebxint $0x80