user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<mergeSortRec>:
  endbr64
  cmp    %esi,%edx
  jg     L28
  ret
  nopl   0x0(%rax)
L28:
  lea    (%rdx,%rsi,1),%eax
  push   %r15
  push   %r14
  mov    %rdi,%r14
  push   %r13
  mov    %eax,%r13d
  push   %r12
  shr    $0x1f,%r13d
  mov    %edx,%r12d
  push   %rbp
  add    %eax,%r13d
  mov    %esi,%ebp
  push   %rbx
  sar    %r13d
  mov    %rcx,%rbx
  sub    $0x18,%rsp
  cmp    %r13d,%esi
  jl     L48
  lea    0x1(%r13),%r15d
  cmp    %r12d,%r15d
  jl     L58
L91:
  add    $0x18,%rsp
  mov    %rbx,%r8
  mov    %r12d,%ecx
  mov    %r13d,%edx
  pop    %rbx
  mov    %ebp,%esi
  mov    %r14,%rdi
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    1050 <mrg@plt>
  nopl   0x0(%rax,%rax,1)
L48:
  lea    (%rsi,%r13,1),%eax
  mov    %eax,%r15d
  shr    $0x1f,%r15d
  add    %eax,%r15d
  sar    %r15d
  cmp    %r15d,%esi
  jl     L102
L124:
  lea    0x1(%r15),%r9d
  cmp    %r9d,%r13d
  jg     L106
L14:
  mov    %r15d,%edx
  mov    %rbx,%r8
  mov    %r13d,%ecx
  mov    %ebp,%esi
  mov    %r14,%rdi
  lea    0x1(%r13),%r15d
  call   <mrg@plt>
  cmp    %r12d,%r15d
  jge    L91
L58:
  lea    (%r15,%r12,1),%eax
  mov    %eax,%r9d
  shr    $0x1f,%r9d
  add    %eax,%r9d
  sar    %r9d
  cmp    %r9d,%r15d
  jl     L107
L47:
  lea    0x1(%r9),%r10d
  cmp    %r10d,%r12d
  jg     L64
L101:
  mov    %rbx,%r8
  mov    %r12d,%ecx
  mov    %r9d,%edx
  mov    %r15d,%esi
  mov    %r14,%rdi
  call   <mrg@plt>
  jmp    L91
  nopl   0x0(%rax,%rax,1)
L102:
  lea    (%rsi,%r15,1),%eax
  mov    %eax,%r9d
  shr    $0x1f,%r9d
  add    %eax,%r9d
  sar    %r9d
  mov    %r9d,%edx
  mov    %r9d,0x4(%rsp)
  call   <mergeSortRec>
  mov    0x4(%rsp),%r9d
  mov    %rbx,%rcx
  mov    %r15d,%edx
  mov    %r14,%rdi
  lea    0x1(%r9),%esi
  call   <mergeSortRec>
  mov    0x4(%rsp),%edx
  mov    %rbx,%r8
  mov    %r15d,%ecx
  mov    %ebp,%esi
  mov    %r14,%rdi
  call   <mrg@plt>
  jmp    L124
  xchg   %ax,%ax
L64:
  lea    (%r12,%r10,1),%eax
  mov    %r10d,%esi
  mov    %rbx,%rcx
  mov    %r14,%rdi
  mov    %eax,%r11d
  mov    %r9d,0xc(%rsp)
  shr    $0x1f,%r11d
  mov    %r10d,0x8(%rsp)
  add    %eax,%r11d
  sar    %r11d
  mov    %r11d,%edx
  mov    %r11d,0x4(%rsp)
  call   <mergeSortRec>
  mov    0x4(%rsp),%r11d
  mov    %rbx,%rcx
  mov    %r12d,%edx
  mov    %r14,%rdi
  lea    0x1(%r11),%esi
  call   <mergeSortRec>
  mov    0x4(%rsp),%edx
  mov    0x8(%rsp),%esi
  mov    %rbx,%r8
  mov    %r12d,%ecx
  mov    %r14,%rdi
  call   <mrg@plt>
  mov    0xc(%rsp),%r9d
  jmp    L101
  nopl   0x0(%rax,%rax,1)
L107:
  lea    (%r15,%r9,1),%eax
  mov    %rbx,%rcx
  mov    %r15d,%esi
  mov    %r14,%rdi
  mov    %eax,%r10d
  mov    %r9d,0xc(%rsp)
  shr    $0x1f,%r10d
  add    %eax,%r10d
  sar    %r10d
  mov    %r10d,%edx
  mov    %r10d,0x4(%rsp)
  call   <mergeSortRec>
  mov    0x4(%rsp),%r10d
  mov    %rbx,%rcx
  mov    %r14,%rdi
  mov    0xc(%rsp),%r9d
  lea    0x1(%r10),%esi
  mov    %r10d,0x8(%rsp)
  mov    %r9d,%edx
  mov    %r9d,0x4(%rsp)
  call   <mergeSortRec>
  mov    0x4(%rsp),%ecx
  mov    0x8(%rsp),%edx
  mov    %rbx,%r8
  mov    %r15d,%esi
  mov    %r14,%rdi
  call   <mrg@plt>
  mov    0x4(%rsp),%r9d
  jmp    L47
  nopw   0x0(%rax,%rax,1)
L106:
  lea    0x0(%r13,%r9,1),%eax
  mov    %r9d,%esi
  mov    %rbx,%rcx
  mov    %r14,%rdi
  mov    %eax,%r10d
  mov    %r9d,0x8(%rsp)
  shr    $0x1f,%r10d
  add    %eax,%r10d
  sar    %r10d
  mov    %r10d,%edx
  mov    %r10d,0x4(%rsp)
  call   <mergeSortRec>
  mov    0x4(%rsp),%r10d
  mov    %rbx,%rcx
  mov    %r13d,%edx
  mov    %r14,%rdi
  lea    0x1(%r10),%esi
  call   <mergeSortRec>
  mov    0x4(%rsp),%edx
  mov    0x8(%rsp),%esi
  mov    %rbx,%r8
  mov    %r13d,%ecx
  mov    %r14,%rdi
  call   <mrg@plt>
  jmp    L14
```

assistant: ```c
void mergeSortRec(int *a, int l, int h, int *result) {
  if (h > l) {
    int m = (l + h) / 2;
    mergeSortRec(a, l, m, result);
    mergeSortRec(a, m + 1, h, result);
    mrg(a, l, m, h, result);
  }
}
```