1                                 %line 1+1 cmd_line.asm
     2                                 
     3                                 
     4                                 
     5                                 
     6                                 [section .note.GNU-stack]
     7                                 
     8                                 [section .data]
     9                                 
    10                                 LF equ 10
    11                                 NULL equ 0
    12                                 
    13                                 TRUE equ 1
    14                                 FALSE equ 0
    15                                 
    16                                 EXIT_SUCCESS equ 0
    17                                 
    18                                 STDIN equ 0
    19                                 STDOUT equ 1
    20                                 STDERR equ 2
    21                                 
    22                                 SYS_read equ 0
    23                                 SYS_write equ 1
    24                                 SYS_open equ 2
    25                                 SYS_close equ 3
    26                                 SYS_fork equ 57
    27                                 SYS_exit equ 60
    28                                 SYS_creat equ 85
    29                                 SYS_time equ 201
    30                                 
    31 00000000 0A0A00                 newLine db LF, LF, NULL
    32                                 
    33                                 [section .text]
    34                                 
    35                                 [global main]
    36                                 main:
    37                                 
    38                                 
    39                                 
    40                                 
    41 00000000 4989FC                 mov r12, rdi
    42 00000003 4989F5                 mov r13, rsi
    43                                 
    44                                 
    45                                 
    46                                 
    47                                 printArguments:
    48 00000006 48C7C7[00000000]       mov rdi, newLine
    49 0000000D E87A000000             call printString
    50                                 
    51                                 
    52 00000012 48C7C300000000         mov rbx, 0
    53 00000019 48C7C100000000         mov rcx, 0
    54 00000020 49C7C000000000         mov r8, 0
    55                                 
    56                                 
    57                                 printLoop0:
    58 00000027 498B7CDD00             mov rdi, qword [r13+rbx*8]
    59 0000002C E85B000000             call printString
    60                                 
    61 00000031 48C7C7[00000000]       mov rdi, newLine
    62 00000038 E84F000000             call printString
    63                                 
    64                                 printLoop1
    65 0000003D 498B7CCD00             mov rdi, qword [r13+rcx*8]
    66 00000042 E845000000             call printString
    67                                 
    68 00000047 48C7C7[00000000]       mov rdi, newLine
    69 0000004E E839000000             call printString
    70                                 
    71                                 printLoop2
    72 00000053 4B8B7CC500             mov rdi, qword [r13+r8*8]
    73 00000058 E82F000000             call printString
    74                                 
    75 0000005D 48C7C7[00000000]       mov rdi, newLine
    76 00000064 E823000000             call printString
    77                                 
    78 00000069 48FFC3                 inc rbx
    79 0000006C 4C39E3                 cmp rbx, r12
    80 0000006F 7CB4                   jl printLoop0
    81                                 
    82 00000071 48FFC1                 inc rcx
    83 00000074 4C39E1                 cmp rcx, r12
    84 00000077 7CC2                   jl printLoop1
    85                                 
    86 00000079 49FFC0                 inc r8
    87 0000007C 4D39E0                 cmp r8, r12
    88 0000007F 7CD0                   jl printLoop2
    89                                 
    90                                 
    91                                 clDone:
    92 00000081 48C7C03C000000         mov rax, SYS_exit
    93 00000088 48C7C700000000         mov rdi, EXIT_SUCCESS
    94 0000008F 0F05                   syscall
    95                                 
    96                                 
    97                                 
    98                                 
    99                                 
   100                                 
   101                                 
   102                                 
   103                                 
   104                                 
   105                                 
   106                                 
   107                                 
   108                                 
   109                                 
   110                                 
   111                                 
   112                                 
   113                                 [global printString]
   114                                 printString:
   115                                 
   116 00000091 55                     push rbp
   117 00000092 4889E5                 mov rbp, rsp
   118 00000095 53                     push rbx
   119 00000096 51                     push rcx
   120 00000097 4150                   push r8
   121                                 
   122                                 
   123                                 
   124 00000099 4889FB                 mov rbx, rdi
   125 0000009C 4889F9                 mov rcx, rdi
   126 0000009F 4989F8                 mov r8, rdi
   127 000000A2 48C7C200000000         mov rdx, 0
   128                                 
   129                                 
   130                                 strCountLoop0:
   131 000000A9 803B00                 cmp byte[rbx], NULL
   132 000000AC 7421                   je strCountDone
   133 000000AE 48FFC2                 inc rdx
   134 000000B1 48FFC3                 inc rbx
   135 000000B4 EBF1                   jmp strCountLoop0
   136                                 
   137                                 
   138                                 strCountLoop1:
   139 000000B6 803900                 cmp byte[rcx], NULL
   140 000000B9 7414                   je strCountDone
   141 000000BB 48FFC2                 inc rdx
   142 000000BE 48FFC1                 inc rcx
   143 000000C1 EBF1                   jmp strCountLoop1
   144                                 
   145                                 
   146                                 strCountLoop2:
   147 000000C3 41803800               cmp byte[r8], NULL
   148 000000C7 7406                   je strCountDone
   149 000000C9 48FFC2                 inc rdx
   150 000000CC 49FFC0                 inc r8
   151 000000CF EBF0                   jmp strCountLoop2
   152                                 
   153                                 
   154                                 strCountDone:
   155 000000D1 4883FA00               cmp rdx, 0
   156 000000D5 740F                   je printDone
   157                                 
   158                                 
   159                                 
   160 000000D7 48C7C001000000         mov rax, SYS_write
   161 000000DE 4889FE                 mov rsi, rdi
   162 000000E1 BF01000000             mov edi, STDOUT
   163                                 
   164 000000E6 0F05                   syscall
   165                                 
   166                                 printDone:
   167                                 
   168 000000E8 4158                   pop r8
   169 000000EA 59                     pop rcx
   170 000000EB 5B                     pop rbx
   171 000000EC 5D                     pop rbp
   172 000000ED C3                     ret