user: 下面的汇编指令对应的C源代码是什么:

```asm
<QSsort>:
  endbr64
  push   %r15
  push   %r14
  mov    %rdi,%r14
  push   %r13
  push   %r12
  mov    %edx,%r12d
  push   %rbp
  mov    %esi,%ebp
  sub    $0x20,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  mov    %esi,(%rsp)
  mov    %rsp,%rsi
  mov    %edx,0x4(%rsp)
  lea    0x4(%rsp),%rdx
  call   <QSpartition@plt>
  mov    0x4(%rsp),%r13d
  cmp    %ebp,%r13d
  jg     L159
L7:
  mov    (%rsp),%ebp
  cmp    %r12d,%ebp
  jl     L121
L160:
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L127
  add    $0x20,%rsp
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   (%rax)
L159:
  lea    0xc(%rsp),%rdx
  lea    0x8(%rsp),%rsi
  mov    %r14,%rdi
  mov    %ebp,0x8(%rsp)
  mov    %r13d,0xc(%rsp)
  call   <QSpartition@plt>
  mov    0xc(%rsp),%r15d
  cmp    %r15d,%ebp
  jl     L48
L82:
  mov    0x8(%rsp),%ebp
  cmp    %ebp,%r13d
  jle    L7
  lea    0x14(%rsp),%rdx
  lea    0x10(%rsp),%rsi
  mov    %r14,%rdi
  mov    %ebp,0x10(%rsp)
  mov    %r13d,0x14(%rsp)
  call   <QSpartition@plt>
  mov    0x14(%rsp),%edx
  cmp    %edx,%ebp
  jl     L111
L194:
  mov    0x10(%rsp),%esi
  cmp    %esi,%r13d
  jle    L7
  mov    %r13d,%edx
  mov    %r14,%rdi
  call   <QSsort>
  jmp    L7
  xchg   %ax,%ax
L121:
  lea    0xc(%rsp),%rdx
  lea    0x8(%rsp),%rsi
  mov    %r14,%rdi
  mov    %ebp,0x8(%rsp)
  mov    %r12d,0xc(%rsp)
  call   <QSpartition@plt>
  mov    0xc(%rsp),%r13d
  cmp    %r13d,%ebp
  jl     L124
L141:
  mov    0x8(%rsp),%ebp
  cmp    %ebp,%r12d
  jle    L160
  lea    0x14(%rsp),%rdx
  lea    0x10(%rsp),%rsi
  mov    %r14,%rdi
  mov    %ebp,0x10(%rsp)
  mov    %r12d,0x14(%rsp)
  call   <QSpartition@plt>
  mov    0x14(%rsp),%edx
  cmp    %edx,%ebp
  jl     L93
L43:
  mov    0x10(%rsp),%esi
  cmp    %esi,%r12d
  jle    L160
  mov    %r12d,%edx
  mov    %r14,%rdi
  call   <QSsort>
  jmp    L160
  cs nopw 0x0(%rax,%rax,1)
L124:
  lea    0x14(%rsp),%rdx
  lea    0x10(%rsp),%rsi
  mov    %r14,%rdi
  mov    %ebp,0x10(%rsp)
  mov    %r13d,0x14(%rsp)
  call   <QSpartition@plt>
  mov    0x14(%rsp),%edx
  cmp    %edx,%ebp
  jl     L108
L207:
  mov    0x10(%rsp),%esi
  cmp    %esi,%r13d
  jle    L141
  mov    %r13d,%edx
  mov    %r14,%rdi
  call   <QSsort>
  jmp    L141
L48:
  lea    0x14(%rsp),%rdx
  lea    0x10(%rsp),%rsi
  mov    %r14,%rdi
  mov    %ebp,0x10(%rsp)
  mov    %r15d,0x14(%rsp)
  call   <QSpartition@plt>
  mov    0x14(%rsp),%edx
  cmp    %edx,%ebp
  jl     L200
L75:
  mov    0x10(%rsp),%esi
  cmp    %esi,%r15d
  jle    L82
  mov    %r15d,%edx
  mov    %r14,%rdi
  call   <QSsort>
  jmp    L82
L111:
  mov    %ebp,%esi
  mov    %r14,%rdi
  call   <QSsort>
  jmp    L194
  nop
L200:
  mov    %ebp,%esi
  mov    %r14,%rdi
  call   <QSsort>
  jmp    L75
  nopl   0x0(%rax)
L108:
  mov    %ebp,%esi
  mov    %r14,%rdi
  call   <QSsort>
  jmp    L207
  nop
L93:
  mov    %ebp,%esi
  mov    %r14,%rdi
  call   <QSsort>
  jmp    L43
L127:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
void QSsort(char *string, int left, int right) {
  int i, j;
  i = left;
  j = right;
  QSpartition(string, &i, &j);
  if (left < j)
    QSsort(string, left, j);
  if (i < right)
    QSsort(string, i, right);
}
```