globl old_memcpy
        .type   old_memcpy, @function
old_memcpy:
        pushl   %ebp
        movl    %esp, %ebp
        subl    $20, %esp
        movl    12(%ebp), %eax
        movl    %eax, -4(%ebp)
        movl    8(%ebp), %eax
        movl    %eax, -8(%ebp)
        jmp     .L2
.L3:
        movl    -4(%ebp), %eax
        movzbl  (%eax), %edx
        movl    -8(%ebp), %eax
        movb    %dl, (%eax)
        addl    $1, -8(%ebp)
        addl    $1, -4(%ebp)
        subl    $1, 16(%ebp)
.L2:
        cmpl    $0, 16(%ebp)
        jne     .L3
        leave
        ret
        .size   old_memcpy, .-old_memcpy

## memcopy
.globl memcpy
        .type   memcpy, @function
memcpy:
        pushl   %ebp
        movl    %esp, %ebp
        subl    $32, %esp
        movl    8(%ebp), %eax
        movl    %eax, -4(%ebp)
        movl    12(%ebp), %eax
        movl    %eax, -8(%ebp)
        movl    16(%ebp), %eax
        shrl    $2, %eax
        movl    %eax, -12(%ebp)
        andl    $3, 16(%ebp)
        jmp     .L6
.L7:
        movl    -8(%ebp), %eax
        movl    (%eax), %edx
        movl    -4(%ebp), %eax
        movl    %edx, (%eax)
        addl    $4, -4(%ebp)
        addl    $4, -8(%ebp)
        subl    $1, -12(%ebp)
.L6:
        cmpl    $0, -12(%ebp)
        jne     .L7
        movl    -8(%ebp), %eax
        movl    %eax, -16(%ebp)
        movl    -4(%ebp), %eax
        movl    %eax, -20(%ebp)
        jmp     .L8
.L9:
        movl    -16(%ebp), %eax
        movzbl  (%eax), %edx
        movl    -20(%ebp), %eax
        movb    %dl, (%eax)
        addl    $1, -20(%ebp)
        addl    $1, -16(%ebp)
        subl    $1, 16(%ebp)
.L8:
        cmpl    $0, 16(%ebp)
        jne     .L9
        movl    8(%ebp), %eax
        leave
        ret
        .size   memcpy, .-memcpy
.globl memset
        .type   memset, @function