user: What is the c source code of the assembly code below?

```asm
<addr_itox>:
  endbr64
  test   %edx,%edx
  jle    L32
  movslq %edx,%rax
  lea    (%rsi,%rax,4),%rcx
  cmp    %rcx,%rdi
  setae  %cl
  add    %rdi,%rax
  cmp    %rax,%rsi
  setae  %al
  or     %al,%cl
  je     L25
  lea    -0x1(%rdx),%eax
  cmp    $0xe,%eax
  jbe    L25
  mov    %edx,%r8d
  movdqa D9(%rip),%xmm3
  mov    %rsi,%rax
  mov    %rdi,%rcx
  shr    $0x4,%r8d
  sub    $0x1,%r8d
  shl    $0x6,%r8
  lea    0x40(%rsi,%r8,1),%r8
  nopl   0x0(%rax,%rax,1)
L141:
  movdqu (%rax),%xmm0
  movdqu 0x10(%rax),%xmm5
  add    $0x40,%rax
  add    $0x10,%rcx
  movdqu -0x10(%rax),%xmm7
  movdqa %xmm0,%xmm1
  punpcklwd %xmm5,%xmm0
  punpckhwd %xmm5,%xmm1
  movdqa %xmm0,%xmm2
  punpckhwd %xmm1,%xmm2
  punpcklwd %xmm1,%xmm0
  movdqu -0x20(%rax),%xmm1
  punpcklwd %xmm2,%xmm0
  movdqa %xmm1,%xmm2
  punpcklwd %xmm7,%xmm1
  pand   %xmm3,%xmm0
  punpckhwd %xmm7,%xmm2
  movdqa %xmm1,%xmm4
  punpckhwd %xmm2,%xmm4
  punpcklwd %xmm2,%xmm1
  punpcklwd %xmm4,%xmm1
  pand   %xmm3,%xmm1
  packuswb %xmm1,%xmm0
  movups %xmm0,-0x10(%rcx)
  cmp    %r8,%rax
  jne    L141
  mov    %edx,%eax
  and    $0xfffffff0,%eax
  test   $0xf,%dl
  je     L32
  mov    %eax,%r8d
  mov    (%rsi,%r8,4),%r9d
  lea    0x0(,%r8,4),%rcx
  mov    %r9b,(%rdi,%r8,1)
  lea    0x1(%rax),%r8d
  cmp    %r8d,%edx
  jle    L32
  mov    0x4(%rsi,%rcx,1),%r9d
  movslq %r8d,%r8
  mov    %r9b,(%rdi,%r8,1)
  lea    0x2(%rax),%r8d
  cmp    %r8d,%edx
  jle    L32
  mov    0x8(%rsi,%rcx,1),%r9d
  movslq %r8d,%r8
  mov    %r9b,(%rdi,%r8,1)
  lea    0x3(%rax),%r8d
  cmp    %r8d,%edx
  jle    L32
  mov    0xc(%rsi,%rcx,1),%r9d
  movslq %r8d,%r8
  mov    %r9b,(%rdi,%r8,1)
  lea    0x4(%rax),%r8d
  cmp    %r8d,%edx
  jle    L32
  mov    0x10(%rsi,%rcx,1),%r9d
  movslq %r8d,%r8
  mov    %r9b,(%rdi,%r8,1)
  lea    0x5(%rax),%r8d
  cmp    %r8d,%edx
  jle    L32
  mov    0x14(%rsi,%rcx,1),%r9d
  movslq %r8d,%r8
  mov    %r9b,(%rdi,%r8,1)
  lea    0x6(%rax),%r8d
  cmp    %r8d,%edx
  jle    L32
  mov    0x18(%rsi,%rcx,1),%r9d
  movslq %r8d,%r8
  mov    %r9b,(%rdi,%r8,1)
  lea    0x7(%rax),%r8d
  cmp    %r8d,%edx
  jle    L32
  mov    0x1c(%rsi,%rcx,1),%r9d
  movslq %r8d,%r8
  mov    %r9b,(%rdi,%r8,1)
  lea    0x8(%rax),%r8d
  cmp    %r8d,%edx
  jle    L32
  mov    0x20(%rsi,%rcx,1),%r9d
  movslq %r8d,%r8
  mov    %r9b,(%rdi,%r8,1)
  lea    0x9(%rax),%r8d
  cmp    %r8d,%edx
  jle    L32
  mov    0x24(%rsi,%rcx,1),%r9d
  movslq %r8d,%r8
  mov    %r9b,(%rdi,%r8,1)
  lea    0xa(%rax),%r8d
  cmp    %r8d,%edx
  jle    L32
  mov    0x28(%rsi,%rcx,1),%r9d
  movslq %r8d,%r8
  mov    %r9b,(%rdi,%r8,1)
  lea    0xb(%rax),%r8d
  cmp    %r8d,%edx
  jle    L32
  mov    0x2c(%rsi,%rcx,1),%r9d
  movslq %r8d,%r8
  mov    %r9b,(%rdi,%r8,1)
  lea    0xc(%rax),%r8d
  cmp    %r8d,%edx
  jle    L32
  mov    0x30(%rsi,%rcx,1),%r9d
  movslq %r8d,%r8
  mov    %r9b,(%rdi,%r8,1)
  lea    0xd(%rax),%r8d
  cmp    %r8d,%edx
  jle    L32
  mov    0x34(%rsi,%rcx,1),%r9d
  movslq %r8d,%r8
  add    $0xe,%eax
  mov    %r9b,(%rdi,%r8,1)
  cmp    %eax,%edx
  jle    L32
  mov    0x38(%rsi,%rcx,1),%edx
  cltq
  mov    %dl,(%rdi,%rax,1)
  ret
  nop
L25:
  mov    %edx,%edx
  xor    %eax,%eax
  nopl   0x0(%rax)
L91:
  mov    (%rsi,%rax,4),%ecx
  mov    %cl,(%rdi,%rax,1)
  add    $0x1,%rax
  cmp    %rax,%rdx
  jne    L91
L32:
  ret
```

tool_calls: name: unpack_data
arguments: data_tag: D9
data_type: byte[16]

tool: {"D9": [0xff,0x00,0xff,0x00,0xff,0x00,0xff,0x00,0xff,0x00,0xff,0x00,0xff,0x00,0xff,0x00]}

assistant: ```c
void addr_itox(unsigned char *daddr, int *saddr, int convlen) {
  int i;
  for (i = 0; i < convlen; i++)
    daddr[i] = (unsigned char)saddr[i];
}
```