• 投稿日時: 2015-03-31 15:13
• オリジナル
• By OSDN

         .file   "gcd.c"
         .text
         .globl  gcd
         .type   gcd, @function
 gcd:
         pushl   %ebp
         movl    %esp, %ebp
         subl    $16, %esp
         jmp     .L2
 .L3:
         movl    8(%ebp), %eax
         cmpl    12(%ebp), %eax
         jge     .L4
         movl    8(%ebp), %eax
         movl    %eax, -8(%ebp)
         movl    12(%ebp), %eax
         movl    %eax, 8(%ebp)
         movl    -8(%ebp), %eax
         movl    %eax, 12(%ebp)
 .L4:
         movl    12(%ebp), %eax
         subl    %eax, 8(%ebp)
 .L2:
         movl    8(%ebp), %eax
         cmpl    12(%ebp), %eax
         jne     .L3
         movl    8(%ebp), %eax
         leave
         ret
         .size   gcd, .-gcd
         .section        .rodata
 .LC0:
         .string "usage: %s <numA> <numB>\n"
         .align 4
 .LC1:
         .string "\tto calculate the greatest common divisor\n\tof two unsigned numbers."
 .LC2:
         .string "greatest common divisor: %ld\n"
 .LC3:
         .string "%ld/%ld => %ld/%ld\n"
         .align 4
 .LC4:
         .string "%s is not an unsigned number I can recognize.\n"
         .type   .LSSH0, @object
         .size   .LSSH0, 5
 .LSSH0:
         .string "main"
         .text
         .globl  main
         .type   main, @function
 main:
         leal    4(%esp), %ecx
         andl    $-16, %esp
         pushl   -4(%ecx)
         pushl   %ebp
         movl    %esp, %ebp
         pushl   %ebx
         pushl   %ecx
         subl    $64, %esp
         call    __i686.get_pc_thunk.bx
         addl    $_GLOBAL_OFFSET_TABLE_, %ebx
         movl    4(%ecx), %eax
         movl    %eax, -44(%ebp)
         movl    __guard_local@GOTOFF(%ebx), %eax
         movl    %eax, -12(%ebp)
         xorl    %eax, %eax
         cmpl    $3, (%ecx)
         je      .L9
         movl    -44(%ebp), %eax
         movl    (%eax), %eax
         movl    %eax, 4(%esp)
         leal    .LC0@GOTOFF(%ebx), %eax
         movl    %eax, (%esp)
         call    printf@PLT
         leal    .LC1@GOTOFF(%ebx), %eax
         movl    %eax, (%esp)
         call    puts@PLT
         movl    $1, -48(%ebp)
         jmp     .L11
 .L9:
         movl    -44(%ebp), %eax
         addl    $4, %eax
         movl    (%eax), %edx
         movl    $0, 8(%esp)
         leal    -24(%ebp), %eax
         movl    %eax, 4(%esp)
         movl    %edx, (%esp)
         call    strtoul@PLT
         movl    %eax, -16(%ebp)
         movl    -44(%ebp), %eax
         addl    $4, %eax
         movl    (%eax), %edx
         movl    -24(%ebp), %eax
         cmpl    %eax, %edx
         jae     .L12
         movl    -44(%ebp), %eax
         addl    $8, %eax
         movl    (%eax), %edx
         movl    $0, 8(%esp)
         leal    -24(%ebp), %eax
         movl    %eax, 4(%esp)
         movl    %edx, (%esp)
         call    strtoul@PLT
         movl    %eax, -20(%ebp)
         movl    -44(%ebp), %eax
         addl    $8, %eax
         movl    (%eax), %edx
         movl    -24(%ebp), %eax
         cmpl    %eax, %edx
         jae     .L14
         movl    -20(%ebp), %eax
         movl    %eax, 4(%esp)
         movl    -16(%ebp), %eax
         movl    %eax, (%esp)
         call    gcd
         movl    %eax, -28(%ebp)
         movl    -28(%ebp), %eax
         movl    %eax, 4(%esp)
         leal    .LC2@GOTOFF(%ebx), %eax
         movl    %eax, (%esp)
         call    printf@PLT
         movl    -20(%ebp), %edx
         movl    %edx, %eax
         sarl    $31, %edx
         idivl   -28(%ebp)
         movl    %eax, %ecx
         movl    -16(%ebp), %edx
         movl    %edx, %eax
         sarl    $31, %edx
         idivl   -28(%ebp)
         movl    %ecx, 16(%esp)
         movl    %eax, 12(%esp)
         movl    -20(%ebp), %eax
         movl    %eax, 8(%esp)
         movl    -16(%ebp), %eax
         movl    %eax, 4(%esp)
         leal    .LC3@GOTOFF(%ebx), %eax
         movl    %eax, (%esp)
         call    printf@PLT
         movl    $0, -48(%ebp)
         jmp     .L11
 .L14:
         movl    -44(%ebp), %eax
         addl    $8, %eax
         movl    (%eax), %eax
         movl    %eax, 4(%esp)
         leal    .LC4@GOTOFF(%ebx), %eax
         movl    %eax, (%esp)
         call    printf@PLT
         jmp     .L16
 .L12:
         movl    -44(%ebp), %eax
         addl    $4, %eax
         movl    (%eax), %eax
         movl    %eax, 4(%esp)
         leal    .LC4@GOTOFF(%ebx), %eax
         movl    %eax, (%esp)
         call    printf@PLT
 .L16:
         movl    $1, -48(%ebp)
 .L11:
         movl    -48(%ebp), %eax
         movl    -12(%ebp), %edx
         xorl    __guard_local@GOTOFF(%ebx), %edx
         je      .L18
         leal    .LSSH0@GOTOFF(%ebx), %eax
         movl    %eax, (%esp)
         call    __stack_smash_handler@PLT
 .L18:
         addl    $64, %esp
         popl    %ecx
         popl    %ebx
         popl    %ebp
         leal    -4(%ecx), %esp
         ret
         .size   main, .-main
         .section        .gnu.linkonce.t.__i686.get_pc_thunk.bx,"ax",@progbits
         .globl  __i686.get_pc_thunk.bx
         .hidden __i686.get_pc_thunk.bx
         .type   __i686.get_pc_thunk.bx, @function
 __i686.get_pc_thunk.bx:
         movl    (%esp), %ebx
         ret