1                                 %line 1+1 cmdl_callee.asm
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     3                                 
     4                                 
     5                                 [section .data]
     6                                 
     7                                 
     8                                 LF equ 10
     9                                 NULL equ 0
    10                                 
    11                                 
    12                                 
    13                                 
    14                                 STDOUT equ 1
    15                                 
    16                                 
    17                                 SYS_write equ 1
    18                                 
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    27                                 
    28                                 
    29                                 [section .text]
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    76                                 
    77                                 
    78                                 
    79                                 [global print_string]
    80                                 print_string:
    81 00000000 55                     push rbp
    82 00000001 4889E5                 mov rbp, rsp
    83 00000004 53                     push rbx
    84                                 
    85                                 
    86 00000005 4889FB                 mov rbx, rdi
    87 00000008 48C7C200000000         mov rdx, 0
    88                                 str_count_loop:
    89 0000000F 803B00                 cmp byte[rbx], NULL
    90 00000012 7406                   je str_count_done
    91 00000014 48FFC2                 inc rdx
    92 00000017 48FFC3                 inc rbx
    93 0000001A EBF1                   jmp str_count_loop
    94                                 str_count_done:
    95 0000001C 4883FA00               cmp rdx, 0
    96 00000020 740F                   je FINITO2
    97                                 
    98                                 
    99 00000022 48C7C001000000         mov rax, SYS_write
   100 00000029 4889FE                 mov rsi, rdi
   101 0000002C BF01000000             mov edi, STDOUT
   102                                 
   103 00000031 0F05                   syscall
   104                                 
   105                                 
   106                                 
   107                                 FINITO2:
   108 00000033 5B                     pop rbx
   109 00000034 5D                     pop rbp
   110 00000035 C3                     ret