user: 下面的汇编指令对应的C源代码是什么:

```asm
<conv3x3x3>:
  endbr64
  push   %r15
  mov    %r9d,%eax
  push   %r14
  mov    %r9d,%r14d
  push   %r13
  push   %r12
  mov    %rdi,%r12
  mov    %rsi,%rdi
  push   %rbp
  mov    %r8d,%ebp
  push   %rbx
  mov    %rdx,%rbx
  sub    $0x108,%rsp
  add    %r8d,%eax
  mov    %ecx,0x8c(%rsp)
  mov    0x140(%rsp),%r13d
  mov    %eax,0xf4(%rsp)
  js     L2
  cltq
  xor    %esi,%esi
  lea    0x2(%rax,%rax,1),%r15
  mov    %r15,%rdx
  call   <memset@plt>
  mov    %rax,%rdi
  add    %r15,%rdi
L2:
  mov    0xf4(%rsp),%eax
  movslq %r14d,%r9
  movslq %ebp,%r8
  lea    (%r8,%r8,1),%r11
  add    $0x1,%eax
  movslq %eax,%rdx
  add    %eax,%eax
  lea    (%r12,%rdx,2),%rsi
  lea    (%r9,%r9,1),%rdx
  mov    %rdx,%rcx
  neg    %rcx
  mov    %rcx,%r10
  add    %rsi,%rcx
  sub    %r11,%r10
  mov    %rcx,0x10(%rsp)
  lea    -0x2(%rsi,%r10,1),%r14
  lea    (%rsi,%r10,1),%r15
  lea    0x2(%rsi,%r10,1),%r10
  mov    %r10,(%rsp)
  mov    $0xfffffffffffffffe,%r10
  mov    %r10,%rbp
  sub    %rdx,%rbp
  add    %rsi,%rbp
  mov    %rbp,0x8(%rsp)
  mov    $0x1,%ebp
  mov    %rbp,%rcx
  sub    %r8,%rbp
  sub    %r9,%rcx
  lea    (%rsi,%rbp,2),%rbp
  lea    (%rsi,%rcx,2),%rcx
  mov    %rbp,0xf8(%rsp)
  lea    (%rsi,%r11,1),%rbp
  mov    %rcx,0x18(%rsp)
  mov    %r8,%rcx
  sub    %r9,%rcx
  mov    %rbp,0x48(%rsp)
  add    %rcx,%rcx
  lea    -0x2(%rsi,%rcx,1),%r12
  mov    %r12,0x20(%rsp)
  lea    (%rsi,%rcx,1),%r12
  mov    %r12,0x28(%rsp)
  lea    0x2(%rsi,%rcx,1),%r12
  mov    %r12,0x30(%rsp)
  mov    %r10,%r12
  sub    %rcx,%r10
  add    %rsi,%r10
  sub    %r11,%r12
  mov    %r10,0x50(%rsp)
  mov    %rsi,%r10
  add    %rsi,%r12
  sub    %rcx,%r10
  mov    %r9,%rcx
  add    %r8,%r9
  mov    %r12,0x38(%rsp)
  sub    %r8,%rcx
  mov    %r10,0x58(%rsp)
  add    %r9,%r9
  mov    %rsi,%r12
  lea    0x2(%rsi,%rcx,2),%r10
  lea    -0x2(%rsi,%rdx,1),%rcx
  mov    %r13d,%r8d
  sub    %r11,%r12
  mov    %rcx,0x60(%rsp)
  lea    (%rsi,%rdx,1),%rcx
  sub    %eax,%r8d
  mov    %rcx,0x68(%rsp)
  lea    0x2(%rsi,%rdx,1),%rcx
  mov    %rcx,0x70(%rsp)
  lea    -0x2(%rsi,%r9,1),%rcx
  mov    %rcx,0x78(%rsp)
  lea    (%rsi,%r9,1),%rcx
  lea    0x2(%rsi,%r9,1),%r9
  mov    %r12,0x40(%rsp)
  lea    -0x2(%rsi,%r11,1),%r12
  lea    0x2(%rsi,%r11,1),%r11
  mov    %rcx,0x80(%rsp)
  test   %r8d,%r8d
  jle    L20
  mov    (%rbx),%eax
  movslq %r8d,%r8
  xor    %ecx,%ecx
  mov    %eax,0x90(%rsp)
  mov    0x4(%rbx),%eax
  mov    %eax,0x94(%rsp)
  mov    0x8(%rbx),%eax
  mov    %eax,0x98(%rsp)
  mov    0xc(%rbx),%eax
  mov    %eax,0x9c(%rsp)
  mov    0x10(%rbx),%eax
  mov    %eax,0xa0(%rsp)
  mov    0x14(%rbx),%eax
  mov    %eax,0xa4(%rsp)
  mov    0x18(%rbx),%eax
  mov    %eax,0xa8(%rsp)
  mov    0x1c(%rbx),%eax
  mov    %eax,0xac(%rsp)
  mov    0x20(%rbx),%eax
  mov    %eax,0xb0(%rsp)
  mov    0x24(%rbx),%eax
  mov    %eax,0xb4(%rsp)
  mov    0x28(%rbx),%eax
  mov    %eax,0xb8(%rsp)
  mov    0x2c(%rbx),%eax
  mov    %eax,0xbc(%rsp)
  mov    0x30(%rbx),%eax
  mov    %eax,0xc0(%rsp)
  mov    0x34(%rbx),%eax
  mov    %eax,0xc4(%rsp)
  mov    0x38(%rbx),%eax
  mov    %eax,0xc8(%rsp)
  mov    0x3c(%rbx),%eax
  mov    %eax,0xcc(%rsp)
  mov    0x40(%rbx),%eax
  mov    0x50(%rbx),%r13d
  mov    0xf8(%rsp),%rbp
  mov    %eax,0xd0(%rsp)
  mov    0x44(%rbx),%eax
  mov    %eax,0xd4(%rsp)
  mov    0x48(%rbx),%eax
  mov    %eax,0xd8(%rsp)
  mov    0x4c(%rbx),%eax
  mov    %eax,0xdc(%rsp)
  mov    0x54(%rbx),%eax
  mov    %eax,0xe0(%rsp)
  mov    0x58(%rbx),%eax
  mov    %eax,0xe4(%rsp)
  mov    0x5c(%rbx),%eax
  mov    %eax,0xe8(%rsp)
  mov    0x60(%rbx),%eax
  mov    %eax,0xec(%rsp)
  mov    0x64(%rbx),%eax
  mov    0x68(%rbx),%ebx
  mov    %eax,0xf0(%rsp)
  nopl   (%rax)
L31:
  movswl (%r14,%rcx,2),%eax
  movswl (%r15,%rcx,2),%edx
  imul   0x90(%rsp),%eax
  imul   0x94(%rsp),%edx
  add    %edx,%eax
  mov    (%rsp),%rdx
  movswl (%rdx,%rcx,2),%edx
  imul   0x98(%rsp),%edx
  add    %edx,%eax
  mov    0x8(%rsp),%rdx
  movswl (%rdx,%rcx,2),%edx
  imul   0x9c(%rsp),%edx
  add    %edx,%eax
  mov    0x10(%rsp),%rdx
  movswl (%rdx,%rcx,2),%edx
  imul   0xa0(%rsp),%edx
  add    %edx,%eax
  mov    0x18(%rsp),%rdx
  movswl (%rdx,%rcx,2),%edx
  imul   0xa4(%rsp),%edx
  add    %edx,%eax
  mov    0x20(%rsp),%rdx
  movswl (%rdx,%rcx,2),%edx
  imul   0xa8(%rsp),%edx
  add    %edx,%eax
  mov    0x28(%rsp),%rdx
  movswl (%rdx,%rcx,2),%edx
  imul   0xac(%rsp),%edx
  add    %edx,%eax
  mov    0x30(%rsp),%rdx
  movswl (%rdx,%rcx,2),%edx
  imul   0xb0(%rsp),%edx
  add    %edx,%eax
  mov    0x38(%rsp),%rdx
  movswl (%rdx,%rcx,2),%edx
  imul   0xb4(%rsp),%edx
  add    %edx,%eax
  mov    0x40(%rsp),%rdx
  movswl (%rdx,%rcx,2),%edx
  imul   0xb8(%rsp),%edx
  add    %edx,%eax
  movswl 0x0(%rbp,%rcx,2),%edx
  imul   0xbc(%rsp),%edx
  add    %edx,%eax
  movswl -0x2(%rsi,%rcx,2),%edx
  imul   0xc0(%rsp),%edx
  add    %edx,%eax
  movswl (%rsi,%rcx,2),%edx
  imul   0xc4(%rsp),%edx
  add    %edx,%eax
  movswl 0x2(%rsi,%rcx,2),%edx
  imul   0xc8(%rsp),%edx
  add    %edx,%eax
  movswl (%r12,%rcx,2),%edx
  imul   0xcc(%rsp),%edx
  add    %edx,%eax
  mov    0x48(%rsp),%rdx
  movswl (%rdx,%rcx,2),%edx
  imul   0xd0(%rsp),%edx
  add    %edx,%eax
  movswl (%r11,%rcx,2),%edx
  imul   0xd4(%rsp),%edx
  add    %edx,%eax
  mov    0x50(%rsp),%rdx
  movswl (%rdx,%rcx,2),%edx
  imul   0xd8(%rsp),%edx
  add    %edx,%eax
  mov    0x58(%rsp),%rdx
  movswl (%rdx,%rcx,2),%edx
  imul   0xdc(%rsp),%edx
  add    %edx,%eax
  movswl (%r10,%rcx,2),%edx
  imul   %r13d,%edx
  add    %edx,%eax
  mov    0x60(%rsp),%rdx
  movswl (%rdx,%rcx,2),%edx
  imul   0xe0(%rsp),%edx
  add    %edx,%eax
  mov    0x68(%rsp),%rdx
  movswl (%rdx,%rcx,2),%edx
  imul   0xe4(%rsp),%edx
  add    %edx,%eax
  mov    0x70(%rsp),%rdx
  movswl (%rdx,%rcx,2),%edx
  imul   0xe8(%rsp),%edx
  add    %edx,%eax
  mov    0x78(%rsp),%rdx
  movswl (%rdx,%rcx,2),%edx
  imul   0xec(%rsp),%edx
  add    %edx,%eax
  mov    0x80(%rsp),%rdx
  movswl (%rdx,%rcx,2),%edx
  imul   0xf0(%rsp),%edx
  add    %edx,%eax
  movswl (%r9,%rcx,2),%edx
  imul   %ebx,%edx
  add    %edx,%eax
  cltd
  idivl  0x8c(%rsp)
  mov    $0xfff,%edx
  cmp    %edx,%eax
  cmovg  %edx,%eax
  mov    %ax,(%rdi,%rcx,2)
  add    $0x1,%rcx
  cmp    %rcx,%r8
  jne    L31
  lea    (%rdi,%r8,2),%rdi
L20:
  movslq 0xf4(%rsp),%rax
  test   %eax,%eax
  js     L6
  add    $0x108,%rsp
  lea    0x2(%rax,%rax,1),%rdx
  xor    %esi,%esi
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    1050 <memset@plt>
  nopw   0x0(%rax,%rax,1)
L6:
  add    $0x108,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
```

assistant: ```c
void conv3x3x3(short int *src, short int *dst, int *conv, int norm, int ncol, int npix, int nvol) {
  short int *i00, *i01, *i02, *i03, *i04, *i05, *i06, *i07, *i08;
  short int *i09, *i10, *i11, *i12, *i13, *i14, *i15, *i16, *i17;
  short int *i18, *i19, *i20, *i21, *i22, *i23, *i24, *i25, *i26;
  int i, res;
  for (i = 0; i < npix + ncol + 1; ++i) {
    *dst = 0;
    ++dst;
  }
  src += npix + ncol + 1;
  i00 = src - npix - ncol - 1;
  i01 = src - npix - ncol;
  i02 = src - npix - ncol + 1;
  i03 = src - npix - 1;
  i04 = src - npix;
  i05 = src - npix + 1;
  i06 = src - npix + ncol - 1;
  i07 = src - npix + ncol;
  i08 = src - npix + ncol + 1;
  i09 = src - ncol - 1;
  i10 = src - ncol;
  i11 = src - ncol + 1;
  i12 = src - 1;
  i13 = src;
  i14 = src + 1;
  i15 = src + ncol - 1;
  i16 = src + ncol;
  i17 = src + ncol + 1;
  i18 = src + npix - ncol - 1;
  i19 = src + npix - ncol;
  i20 = src + npix - ncol + 1;
  i21 = src + npix - 1;
  i22 = src + npix;
  i23 = src + npix + 1;
  i24 = src + npix + ncol - 1;
  i25 = src + npix + ncol;
  i26 = src + npix + ncol + 1;
  nvol -= 2 * (npix + ncol + 1);
  for (i = 0; i < nvol; ++i) {
    res = (*i00 * conv[0] + *i01 * conv[1] + *i02 * conv[2] + *i03 * conv[3] + *i04 * conv[4] + *i05 * conv[5] + *i06 * conv[6] + *i07 * conv[7] + *i08 * conv[8] + *i09 * conv[9] + *i10 * conv[10] + *i11 * conv[11] + *i12 * conv[12] + *i13 * conv[13] + *i14 * conv[14] + *i15 * conv[15] + *i16 * conv[16] + *i17 * conv[17] + *i18 * conv[18] + *i19 * conv[19] + *i20 * conv[20] + *i21 * conv[21] + *i22 * conv[22] + *i23 * conv[23] + *i24 * conv[24] + *i25 * conv[25] + *i26 * conv[26]) / norm;
    if (res > 4096 - 1)
      *dst = 4096 - 1;
    else
      *dst = res;
    dst++;
    i00++;
    i01++;
    i02++;
    i03++;
    i04++;
    i05++;
    i06++;
    i07++;
    i08++;
    i09++;
    i10++;
    i11++;
    i12++;
    i13++;
    i14++;
    i15++;
    i16++;
    i17++;
    i18++;
    i19++;
    i20++;
    i21++;
    i22++;
    i23++;
    i24++;
    i25++;
    i26++;
  }
  for (i = 0; i < npix + ncol + 1; ++i) {
    *dst = 0;
    ++dst;
  }
}
```