user: 下面的汇编指令对应的C源代码是什么:

```asm
<copy_ascii>:
  endbr64
  push   %r13
  mov    %rdi,%r13
  push   %r12
  mov    %rsi,%r12
  push   %rbp
  mov    %rdx,%rbp
  push   %rbx
  mov    %rcx,%rbx
  sub    $0x8,%rsp
  test   %rdi,%rdi
  setne  %dil
  movzbl %dil,%edi
  call   <assert@plt>
  xor    %edi,%edi
  test   %rbp,%rbp
  setne  %dil
  call   <assert@plt>
  test   %ebx,%ebx
  jle    L251
  movslq %ebx,%rcx
  jmp    L226
  nopl   (%rax)
L44:
  test   %rcx,%rcx
  je     L210
L226:
  mov    %rcx,%rax
  mov    %ecx,%edi
  mov    %ecx,%esi
  cmpb   $0x20,-0x1(%rbp,%rax,1)
  lea    -0x1(%rax),%rcx
  je     L44
  cmp    %rax,%r12
  jbe    L282
  lea    0x1(%rbp),%rcx
  mov    %r13,%rdx
  sub    %rcx,%rdx
  cmp    $0xe,%rdx
  jbe    L31
  lea    -0x1(%rdi),%edx
  cmp    $0xe,%edx
  jbe    L31
  mov    %edi,%ecx
  movdqa D20(%rip),%xmm5
  xor    %edx,%edx
  pxor   %xmm2,%xmm2
  shr    $0x4,%ecx
  movdqa D17(%rip),%xmm4
  movdqa D3(%rip),%xmm3
  shl    $0x4,%rcx
  nopl   0x0(%rax,%rax,1)
L29:
  movdqu 0x0(%rbp,%rdx,1),%xmm0
  movdqu 0x0(%rbp,%rdx,1),%xmm1
  paddb  %xmm5,%xmm0
  psubusb %xmm4,%xmm0
  pcmpeqb %xmm2,%xmm0
  pand   %xmm0,%xmm1
  pandn  %xmm3,%xmm0
  por    %xmm1,%xmm0
  movups %xmm0,0x0(%r13,%rdx,1)
  add    $0x10,%rdx
  cmp    %rcx,%rdx
  jne    L29
  mov    %edi,%edx
  and    $0xfffffff0,%edx
  mov    %edx,%r8d
  add    %r8,%rbp
  cmp    %edi,%edx
  je     L73
  movzbl 0x0(%rbp),%edi
  mov    $0x2e,%ecx
  lea    -0x20(%rdi),%r9d
  cmp    $0x5f,%r9b
  cmovae %ecx,%edi
  mov    %dil,0x0(%r13,%r8,1)
  lea    0x1(%rdx),%edi
  cmp    %esi,%edi
  jge    L73
  movzbl 0x1(%rbp),%r8d
  movslq %edi,%rdi
  lea    -0x20(%r8),%r9d
  cmp    $0x5f,%r9b
  cmovae %ecx,%r8d
  mov    %r8b,0x0(%r13,%rdi,1)
  lea    0x2(%rdx),%edi
  cmp    %edi,%esi
  jle    L73
  movzbl 0x2(%rbp),%r8d
  movslq %edi,%rdi
  lea    -0x20(%r8),%r9d
  cmp    $0x5f,%r9b
  cmovae %ecx,%r8d
  mov    %r8b,0x0(%r13,%rdi,1)
  lea    0x3(%rdx),%edi
  cmp    %edi,%esi
  jle    L73
  movzbl 0x3(%rbp),%r8d
  movslq %edi,%rdi
  lea    -0x20(%r8),%r9d
  cmp    $0x5f,%r9b
  cmovae %ecx,%r8d
  mov    %r8b,0x0(%r13,%rdi,1)
  lea    0x4(%rdx),%edi
  cmp    %edi,%esi
  jle    L73
  movzbl 0x4(%rbp),%r8d
  movslq %edi,%rdi
  lea    -0x20(%r8),%r9d
  cmp    $0x5f,%r9b
  cmovae %ecx,%r8d
  mov    %r8b,0x0(%r13,%rdi,1)
  lea    0x5(%rdx),%edi
  cmp    %edi,%esi
  jle    L73
  movzbl 0x5(%rbp),%r8d
  movslq %edi,%rdi
  lea    -0x20(%r8),%r9d
  cmp    $0x5f,%r9b
  cmovae %ecx,%r8d
  mov    %r8b,0x0(%r13,%rdi,1)
  lea    0x6(%rdx),%edi
  cmp    %edi,%esi
  jle    L73
  movzbl 0x6(%rbp),%r8d
  movslq %edi,%rdi
  lea    -0x20(%r8),%r9d
  cmp    $0x5f,%r9b
  cmovae %ecx,%r8d
  mov    %r8b,0x0(%r13,%rdi,1)
  lea    0x7(%rdx),%edi
  cmp    %edi,%esi
  jle    L73
  movzbl 0x7(%rbp),%r8d
  movslq %edi,%rdi
  lea    -0x20(%r8),%r9d
  cmp    $0x5f,%r9b
  cmovae %ecx,%r8d
  lea    0x8(%rdx),%ecx
  mov    %r8b,0x0(%r13,%rdi,1)
  cmp    %ecx,%esi
  jle    L73
  movzbl 0x8(%rbp),%r8d
  movslq %ecx,%rdi
  mov    $0x2e,%ecx
  lea    -0x20(%r8),%r9d
  cmp    $0x5f,%r9b
  cmovae %ecx,%r8d
  mov    %r8b,0x0(%r13,%rdi,1)
  lea    0x9(%rdx),%edi
  cmp    %edi,%esi
  jle    L73
  movzbl 0x9(%rbp),%r8d
  movslq %edi,%rdi
  lea    -0x20(%r8),%r9d
  cmp    $0x5f,%r9b
  cmovae %ecx,%r8d
  mov    %r8b,0x0(%r13,%rdi,1)
  lea    0xa(%rdx),%edi
  cmp    %edi,%esi
  jle    L73
  movzbl 0xa(%rbp),%r8d
  movslq %edi,%rdi
  lea    -0x20(%r8),%r9d
  cmp    $0x5f,%r9b
  cmovae %ecx,%r8d
  mov    %r8b,0x0(%r13,%rdi,1)
  lea    0xb(%rdx),%edi
  cmp    %edi,%esi
  jle    L73
  movzbl 0xb(%rbp),%r8d
  movslq %edi,%rdi
  lea    -0x20(%r8),%r9d
  cmp    $0x5f,%r9b
  cmovae %ecx,%r8d
  mov    %r8b,0x0(%r13,%rdi,1)
  lea    0xc(%rdx),%edi
  cmp    %edi,%esi
  jle    L73
  movzbl 0xc(%rbp),%r8d
  movslq %edi,%rdi
  lea    -0x20(%r8),%r9d
  cmp    $0x5f,%r9b
  cmovae %ecx,%r8d
  mov    %r8b,0x0(%r13,%rdi,1)
  lea    0xd(%rdx),%edi
  cmp    %edi,%esi
  jle    L73
  movzbl 0xd(%rbp),%r8d
  movslq %edi,%rdi
  lea    -0x20(%r8),%r9d
  cmp    $0x5f,%r9b
  cmovae %ecx,%r8d
  add    $0xe,%edx
  mov    %r8b,0x0(%r13,%rdi,1)
  cmp    %edx,%esi
  jle    L73
  movzbl 0xe(%rbp),%esi
  movslq %edx,%rdx
  lea    -0x20(%rsi),%edi
  cmp    $0x5f,%dil
  cmovae %ecx,%esi
  mov    %sil,0x0(%r13,%rdx,1)
  nopl   0x0(%rax)
L73:
  movb   $0x0,0x0(%r13,%rax,1)
  xor    %eax,%eax
L24:
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopl   0x0(%rax,%rax,1)
L210:
  mov    $0xffffffff,%eax
  cmp    %r12,%rcx
  jae    L24
  xor    %eax,%eax
  jmp    L73
  xchg   %ax,%ax
L31:
  xor    %edx,%edx
  nopw   0x0(%rax,%rax,1)
L250:
  movzbl 0x0(%rbp,%rdx,1),%ecx
  lea    -0x20(%rcx),%esi
  cmp    $0x5e,%sil
  jbe    L219
L299:
  movb   $0x2e,0x0(%r13,%rdx,1)
  add    $0x1,%rdx
  cmp    %rax,%rdx
  je     L73
  movzbl 0x0(%rbp,%rdx,1),%ecx
  lea    -0x20(%rcx),%esi
  cmp    $0x5e,%sil
  ja     L299
L219:
  mov    %cl,0x0(%r13,%rdx,1)
  add    $0x1,%rdx
  cmp    %rax,%rdx
  jne    L250
  jmp    L73
L251:
  movslq %ebx,%rax
  cmp    %rax,%r12
  ja     L73
L282:
  or     $0xffffffff,%eax
  jmp    L24
```

tool_calls: name: parse_data
arguments: data_label: D20
datatype: byte[16]
name: parse_data
arguments: data_label: D17
datatype: byte[16]
name: parse_data
arguments: data_label: D3
datatype: byte[16]

tool: {"D20": [0xe0,0xe0,0xe0,0xe0,0xe0,0xe0,0xe0,0xe0,0xe0,0xe0,0xe0,0xe0,0xe0,0xe0,0xe0,0xe0]}

tool: {"D17": [0x5e,0x5e,0x5e,0x5e,0x5e,0x5e,0x5e,0x5e,0x5e,0x5e,0x5e,0x5e,0x5e,0x5e,0x5e,0x5e]}

tool: {"D3": [0x2e,0x2e,0x2e,0x2e,0x2e,0x2e,0x2e,0x2e,0x2e,0x2e,0x2e,0x2e,0x2e,0x2e,0x2e,0x2e]}

assistant: ```c
int copy_ascii(char *dst, size_t dst_sz, const void *src, size_t src_sz) {
  const uint8_t *str = src;
  int i, len = src_sz;
  assert(dst != NULL);
  assert(src != NULL);
  while (len > 0 && str[len - 1] == ' ')
    len--;
  if (len >= dst_sz)
    return -1;
  for (i = 0; i < len; i++, str++) {
    if (*str >= 0x20 && *str <= 0x7E)
      dst[i] = (char)*str;
    else
      dst[i] = '.';
  }
  dst[len] = '\0';
  return 0;
}
```