.file "main.c" .text .globl state .data .align 4 .type state, @object .size state, 4 state: .long 1 .globl input .bss .align 32 .type input, @object .size input, 100 input: .zero 100 .section .rodata .LC0: .string " " .LC1: .string "exit" .LC2: .string "test" .LC3: .string "clear" .LC4: .string "unix" .LC5: .string "ls" .LC6: .string "date" .LC7: .string "whoami" .LC8: .string "cat" .LC9: .string "Usage: cat " .LC10: .string "nl" .LC11: .string "Usage: nl " .LC12: .string "cd" .LC13: .string "help" .text .globl main .type main, @function main: .LFB6: .cfi_startproc endbr64 pushq %rbp .cfi_def_cfa_offset 16 .cfi_offset 6, -16 movq %rsp, %rbp .cfi_def_cfa_register 6 addq $-128, %rsp movq %fs:40, %rax movq %rax, -8(%rbp) xorl %eax, %eax jmp .L2 .L21: movl $0, %eax call print_shell@PLT movl $0, %eax call get_input@PLT leaq .LC0(%rip), %rax movq %rax, %rsi leaq input(%rip), %rax movq %rax, %rdi call strtok@PLT movq %rax, -112(%rbp) leaq .LC0(%rip), %rax movq %rax, %rsi movl $0, %edi call strtok@PLT movq %rax, -104(%rbp) cmpq $0, -112(%rbp) je .L24 leaq .LC1(%rip), %rax movq %rax, %rsi leaq input(%rip), %rax movq %rax, %rdi call strcmp@PLT testl %eax, %eax jne .L5 movl $0, %eax call do_exit@PLT jmp .L2 .L5: leaq .LC2(%rip), %rax movq %rax, %rsi leaq input(%rip), %rax movq %rax, %rdi call strcmp@PLT testl %eax, %eax jne .L6 movl $0, %eax call test@PLT jmp .L2 .L6: leaq .LC3(%rip), %rax movq %rax, %rsi leaq input(%rip), %rax movq %rax, %rdi call strcmp@PLT testl %eax, %eax jne .L7 movl $0, %eax call clear_screen@PLT jmp .L2 .L7: leaq .LC4(%rip), %rax movq %rax, %rsi leaq input(%rip), %rax movq %rax, %rdi call strcmp@PLT testl %eax, %eax jne .L8 movl $0, %eax call _unix@PLT jmp .L2 .L8: leaq .LC5(%rip), %rax movq %rax, %rsi leaq input(%rip), %rax movq %rax, %rdi call strcmp@PLT testl %eax, %eax jne .L9 movl $0, %eax call ls@PLT jmp .L2 .L9: leaq .LC6(%rip), %rax movq %rax, %rsi leaq input(%rip), %rax movq %rax, %rdi call strcmp@PLT testl %eax, %eax jne .L10 movl $0, %eax call date@PLT jmp .L2 .L10: leaq .LC7(%rip), %rax movq %rax, %rsi leaq input(%rip), %rax movq %rax, %rdi call strcmp@PLT testl %eax, %eax jne .L11 movl $0, %eax call whoami@PLT jmp .L2 .L11: movq -112(%rbp), %rax leaq .LC8(%rip), %rdx movq %rdx, %rsi movq %rax, %rdi call strcmp@PLT testl %eax, %eax jne .L12 cmpq $0, -104(%rbp) je .L13 movq -104(%rbp), %rax movq %rax, %rdi call cat@PLT jmp .L2 .L13: leaq .LC9(%rip), %rax movq %rax, %rdi call puts@PLT jmp .L2 .L12: movq -112(%rbp), %rax leaq .LC10(%rip), %rdx movq %rdx, %rsi movq %rax, %rdi call strcmp@PLT testl %eax, %eax jne .L14 cmpq $0, -104(%rbp) je .L15 movq -104(%rbp), %rax movq %rax, %rdi call nl@PLT jmp .L2 .L15: leaq .LC11(%rip), %rax movq %rax, %rdi call puts@PLT jmp .L2 .L14: movq -112(%rbp), %rax leaq .LC12(%rip), %rdx movq %rdx, %rsi movq %rax, %rdi call strcmp@PLT testl %eax, %eax jne .L16 movq -104(%rbp), %rax movq %rax, %rdi call cd@PLT jmp .L2 .L16: movq -112(%rbp), %rax leaq .LC13(%rip), %rdx movq %rdx, %rsi movq %rax, %rdi call strcmp@PLT testl %eax, %eax jne .L17 movl $0, %eax call help@PLT jmp .L2 .L17: movl $0, -116(%rbp) movl -116(%rbp), %eax leal 1(%rax), %edx movl %edx, -116(%rbp) cltq movq -112(%rbp), %rdx movq %rdx, -96(%rbp,%rax,8) jmp .L18 .L20: movl -116(%rbp), %eax leal 1(%rax), %edx movl %edx, -116(%rbp) cltq movq -104(%rbp), %rdx movq %rdx, -96(%rbp,%rax,8) .L18: leaq .LC0(%rip), %rax movq %rax, %rsi movl $0, %edi call strtok@PLT movq %rax, -104(%rbp) cmpq $0, -104(%rbp) je .L19 cmpl $8, -116(%rbp) jle .L20 .L19: movl -116(%rbp), %eax cltq movq $0, -96(%rbp,%rax,8) leaq -96(%rbp), %rdx movq -112(%rbp), %rax movq %rdx, %rsi movq %rax, %rdi call execute_program@PLT jmp .L2 .L24: nop .L2: movl state(%rip), %eax testl %eax, %eax jne .L21 movl $0, %eax movq -8(%rbp), %rdx subq %fs:40, %rdx je .L23 call __stack_chk_fail@PLT .L23: leave .cfi_def_cfa 7, 8 ret .cfi_endproc .LFE6: .size main, .-main .ident "GCC: (Ubuntu 13.3.0-6ubuntu2~24.04.1) 13.3.0" .section .note.GNU-stack,"",@progbits .section .note.gnu.property,"a" .align 8 .long 1f - 0f .long 4f - 1f .long 5 0: .string "GNU" 1: .align 8 .long 0xc0000002 .long 3f - 2f 2: .long 0x3 3: .align 8 4: