user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<__aeabi_memcpy>:
  endbr64
  mov    %rdi,%rax
  mov    %rsi,%rcx
  mov    %rdx,%r9
  cmp    $0x1f,%rdx
  jbe    L178
  mov    %rdi,%rsi
  or     %rcx,%rsi
  and    $0x7,%esi
  jne    L120
  lea    0x1f(%rdi),%rdx
  lea    -0x20(%r9),%r8
  sub    %rcx,%rdx
  cmp    $0x3e,%rdx
  jbe    L106
  mov    %r8,%rdi
  xor    %edx,%edx
  shr    $0x5,%rdi
  add    $0x1,%rdi
  nopl   0x0(%rax,%rax,1)
L266:
  movdqu 0x10(%rcx,%rdx,1),%xmm0
  movdqu (%rcx,%rdx,1),%xmm2
  add    $0x1,%rsi
  movups %xmm2,(%rax,%rdx,1)
  movups %xmm0,0x10(%rax,%rdx,1)
  add    $0x20,%rdx
  cmp    %rdi,%rsi
  jb     L266
L26:
  and    $0xffffffffffffffe0,%r8
  mov    %r9,%rsi
  lea    0x20(%r8),%rdx
  and    $0x1f,%esi
  add    %rdx,%rcx
  add    %rdx,%rax
  test   $0x18,%r9b
  je     L53
  mov    (%rcx),%rdx
  mov    %rdx,(%rax)
  lea    -0x8(%rsi),%rdx
  cmp    $0x7,%rdx
  jbe    L17
  mov    0x8(%rcx),%rdi
  sub    $0x10,%rsi
  mov    %rdi,0x8(%rax)
  cmp    $0x7,%rsi
  jbe    L17
  mov    0x10(%rcx),%rsi
  mov    %rsi,0x10(%rax)
L17:
  shr    $0x3,%rdx
  and    $0x7,%r9d
  lea    0x8(,%rdx,8),%rdx
  add    %rdx,%rax
  add    %rdx,%rcx
L178:
  lea    -0x1(%r9),%r8
  test   %r9,%r9
  je     L34
  lea    0x1(%rcx),%rsi
  mov    %rax,%rdx
  sub    %rsi,%rdx
  cmp    $0xe,%rdx
  jbe    L156
  cmp    $0x6,%r8
  jbe    L156
  cmp    $0xe,%r8
  jbe    L28
L85:
  lea    -0x10(%r9),%rdx
  xor    %edi,%edi
  shr    $0x4,%rdx
  lea    0x1(%rdx),%rsi
  xor    %edx,%edx
  nopl   0x0(%rax)
L159:
  movdqu (%rcx,%rdx,1),%xmm1
  add    $0x1,%rdi
  movups %xmm1,(%rax,%rdx,1)
  add    $0x10,%rdx
  cmp    %rdi,%rsi
  ja     L159
  shl    $0x4,%rsi
  mov    %rsi,%rdx
  lea    (%rax,%rsi,1),%rdi
  lea    (%rcx,%rsi,1),%r10
  mov    %r8,%rsi
  sub    %rdx,%rsi
  cmp    %rdx,%r9
  je     L71
  lea    0x1(%rsi),%r9
  cmp    $0x6,%rsi
  jbe    L105
L97:
  mov    (%rcx,%rdx,1),%rcx
  mov    %rcx,(%rax,%rdx,1)
  mov    %r9,%rax
  and    $0xfffffffffffffff8,%rax
  add    %rax,%rdi
  add    %rax,%r10
  sub    %rax,%rsi
  cmp    %r9,%rax
  je     L71
L105:
  movzbl (%r10),%eax
  mov    %al,(%rdi)
  test   %rsi,%rsi
  je     L71
  movzbl 0x1(%r10),%eax
  mov    %al,0x1(%rdi)
  cmp    $0x1,%rsi
  je     L71
  movzbl 0x2(%r10),%eax
  mov    %al,0x2(%rdi)
  cmp    $0x2,%rsi
  je     L71
  movzbl 0x3(%r10),%eax
  mov    %al,0x3(%rdi)
  cmp    $0x3,%rsi
  je     L71
  movzbl 0x4(%r10),%eax
  mov    %al,0x4(%rdi)
  cmp    $0x4,%rsi
  je     L71
  movzbl 0x5(%r10),%eax
  mov    %al,0x5(%rdi)
  cmp    $0x5,%rsi
  je     L71
  movzbl 0x6(%r10),%eax
  mov    %al,0x6(%rdi)
  ret
  nopl   (%rax)
L71:
  ret
  nopl   0x0(%rax)
L120:
  lea    -0x1(%rdx),%r8
  lea    0x1(%rcx),%rsi
  mov    %rdi,%rdx
  sub    %rsi,%rdx
  cmp    $0xe,%rdx
  ja     L85
L156:
  xor    %edx,%edx
  nopw   0x0(%rax,%rax,1)
L158:
  movzbl (%rcx,%rdx,1),%esi
  mov    %sil,(%rax,%rdx,1)
  mov    %rdx,%rsi
  add    $0x1,%rdx
  cmp    %rsi,%r8
  jne    L158
  ret
L28:
  mov    %r8,%rsi
  mov    %rcx,%r10
  mov    %rax,%rdi
  xor    %edx,%edx
  jmp    L97
L53:
  mov    %rsi,%r9
  jmp    L178
  nopl   (%rax)
L34:
  ret
L106:
  mov    %r8,%rdx
  mov    %rcx,%rsi
  and    $0xffffffffffffffe0,%rdx
  lea    0x20(%rdi,%rdx,1),%r10
  mov    %rdi,%rdx
  nopl   0x0(%rax,%rax,1)
L56:
  mov    (%rsi),%rdi
  add    $0x20,%rsi
  add    $0x20,%rdx
  mov    %rdi,-0x20(%rdx)
  mov    -0x18(%rsi),%rdi
  mov    %rdi,-0x18(%rdx)
  mov    -0x10(%rsi),%rdi
  mov    %rdi,-0x10(%rdx)
  mov    -0x8(%rsi),%rdi
  mov    %rdi,-0x8(%rdx)
  cmp    %r10,%rdx
  jne    L56
  jmp    L26
```

assistant: ```c
void __aeabi_memcpy(void *dst0, const void *src0, unsigned long len) {
  char *dst = dst0;
  const char *src = src0;
  long *aligned_dst;
  const long *aligned_src;
  if (!((len) < (sizeof(long) << 2)) && !(((long)src & (sizeof(long) - 1)) | ((long)dst & (sizeof(long) - 1)))) {
    aligned_dst = (long *)dst;
    aligned_src = (const long *)src;
    while (len >= (sizeof(long) << 2)) {
      *aligned_dst++ = *aligned_src++;
      *aligned_dst++ = *aligned_src++;
      *aligned_dst++ = *aligned_src++;
      *aligned_dst++ = *aligned_src++;
      len -= (sizeof(long) << 2);
    }
    while (len >= (sizeof(long))) {
      *aligned_dst++ = *aligned_src++;
      len -= (sizeof(long));
    }
    dst = (char *)aligned_dst;
    src = (const char *)aligned_src;
  }
  while (len--)
    *dst++ = *src++;
}
```