user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<merge>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r14
  push   %r13
  push   %r12
  push   %rbx
  sub    $0x10,%rsp
  mov    %rdi,%r9
  mov    %esi,%eax
  mov    %edx,%r10d
  mov    %fs:0x28,%rdx
  mov    %rdx,-0x28(%rbp)
  xor    %edx,%edx
  mov    %r10d,%r12d
  sub    %esi,%r12d
  lea    0x1(%r12),%r13d
  sub    %r10d,%ecx
  mov    %ecx,%r8d
  movslq %r13d,%rdx
  lea    0xf(,%rdx,4),%rdx
  mov    %rdx,%rsi
  and    $0xfffffffffffffff0,%rsi
  and    $0xfffffffffffff000,%rdx
  mov    %rsp,%rcx
  sub    %rdx,%rcx
L101:
  cmp    %rcx,%rsp
  je     L209
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L101
L209:
  mov    %rsi,%rdx
  and    $0xfff,%edx
  sub    %rdx,%rsp
  test   %rdx,%rdx
  je     L213
  orq    $0x0,-0x8(%rsp,%rdx,1)
L213:
  mov    %rsp,%r11
  movslq %r8d,%rdx
  lea    0xf(,%rdx,4),%rdx
  mov    %rdx,%rsi
  and    $0xfffffffffffffff0,%rsi
  and    $0xfffffffffffff000,%rdx
  mov    %rsp,%rcx
  sub    %rdx,%rcx
L96:
  cmp    %rcx,%rsp
  je     L191
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L96
L191:
  mov    %rsi,%rdx
  and    $0xfff,%edx
  sub    %rdx,%rsp
  test   %rdx,%rdx
  je     L50
  orq    $0x0,-0x8(%rsp,%rdx,1)
L50:
  mov    %rsp,%rdi
  test   %r13d,%r13d
  jle    L171
  mov    %r12d,%edx
  lea    0x4(,%rdx,4),%rsi
  cltq
  lea    (%r9,%rax,4),%rcx
  mov    $0x0,%eax
L105:
  mov    (%rcx,%rax,1),%edx
  mov    %edx,(%r11,%rax,1)
  add    $0x4,%rax
  cmp    %rsi,%rax
  jne    L105
L171:
  test   %r8d,%r8d
  jle    L122
  lea    0x1(%r8),%esi
  movslq %r10d,%r10
  lea    (%r9,%r10,4),%rcx
  mov    $0x1,%eax
L219:
  mov    (%rcx,%rax,4),%edx
  mov    %edx,-0x4(%rdi,%rax,4)
  add    $0x1,%rax
  cmp    %rsi,%rax
  jne    L219
  test   %r13d,%r13d
  jle    L65
  mov    %r9,%rsi
  mov    $0x1,%ecx
  mov    $0x0,%eax
  mov    $0x0,%edx
  jmp    L21
L0:
  add    $0x1,%eax
  mov    %ecx,%ebx
  mov    %r10d,(%rsi)
L63:
  add    $0x1,%ecx
  add    $0x4,%rsi
  cmp    %r13d,%edx
  jge    L220
  cmp    %r8d,%eax
  jge    L220
L21:
  movslq %edx,%r10
  mov    (%r11,%r10,4),%r14d
  movslq %eax,%r10
  mov    (%rdi,%r10,4),%r10d
  cmp    %r10d,%r14d
  jg     L0
  add    $0x1,%edx
  mov    %ecx,%ebx
  mov    %r14d,(%rsi)
  jmp    L63
L220:
  cmp    %r13d,%edx
  jge    L206
L99:
  mov    %edx,%r13d
  mov    %r12d,%r10d
  sub    %edx,%r10d
  movslq %edx,%rdx
  lea    (%r11,%rdx,4),%r11
  movslq %ebx,%rdx
  lea    (%r9,%rdx,4),%rsi
  mov    $0x0,%edx
L58:
  mov    (%r11,%rdx,4),%ecx
  mov    %ecx,(%rsi,%rdx,4)
  mov    %rdx,%rcx
  add    $0x1,%rdx
  cmp    %r10,%rcx
  jne    L58
  lea    0x1(%r12,%rbx,1),%ebx
  sub    %r13d,%ebx
L206:
  cmp    %r8d,%eax
  jge    L138
  cltq
  movslq %ebx,%rbx
  sub    %rax,%rbx
  lea    (%r9,%rbx,4),%rcx
L174:
  mov    (%rdi,%rax,4),%edx
  mov    %edx,(%rcx,%rax,4)
  add    $0x1,%rax
  cmp    %eax,%r8d
  jg     L174
L138:
  mov    -0x28(%rbp),%rax
  sub    %fs:0x28,%rax
  jne    L215
  lea    -0x20(%rbp),%rsp
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %rbp
  ret
L65:
  mov    $0x0,%eax
  mov    $0x0,%ebx
  jmp    L206
L122:
  mov    $0x0,%ebx
  mov    $0x0,%eax
  mov    $0x0,%edx
  test   %r13d,%r13d
  jg     L99
  jmp    L138
L215:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
void merge(int a[], int l, int m, int r) {
  int l1 = m - l + 1;
  int l2 = r - m;
  int i = 0, j = 0, k = 0;
  int a1[l1], a2[l2];
  for (i = 0; i < l1; i++)
    a1[i] = a[l + i];
  for (i = 0; i < l2; i++)
    a2[i] = a[m + 1 + i];
  i = 0;
  j = 0;
  k = 0;
  while ((i < l1) && (j < l2)) {
    if (a1[i] <= a2[j])
      a[k++] = a1[i++];
    else
      a[k++] = a2[j++];
  }
  while (i < l1)
    a[k++] = a1[i++];
  while (j < l2)
    a[k++] = a2[j++];
}
```