user: 请从给定的汇编指令推导出C源代码：

```asm
<Quicksort>:
  endbr64
  push   %r15
  movslq %edx,%rax
  mov    %rdi,%r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %esi,%ebx
  sub    $0x88,%rsp
  mov    %esi,0x4(%rsp)
  mov    %eax,0x78(%rsp)
  mov    %rax,0x70(%rsp)
L635:
  mov    0x78(%rsp),%ecx
  mov    %ebx,%edx
  movslq %ebx,%r11
  lea    0x1(%rbx),%r14d
  lea    (%r15,%r11,4),%r8
  mov    %ebx,%edi
  mov    %r14d,%r9d
  add    %ecx,%edx
  mov    %edx,%eax
  shr    $0x1f,%eax
  add    %edx,%eax
  mov    %ecx,%edx
  sar    %eax
  cltq
  mov    (%r15,%rax,4),%esi
  mov    0x70(%rsp),%rax
L323:
  mov    (%r8),%ebx
  lea    (%r15,%rax,4),%r10
  mov    %edi,%ebp
  mov    (%r10),%ecx
  cmp    %esi,%ebx
  jl     L757
  cmp    %ecx,%esi
  jge    L228
  lea    -0x4(%r15,%rax,4),%rax
  nopl   0x0(%rax)
L590:
  mov    %rax,%r10
  mov    (%rax),%ecx
  sub    $0x4,%rax
  sub    $0x1,%edx
  cmp    %esi,%ecx
  jg     L590
L228:
  cmp    %edx,%edi
  jle    L781
L468:
  mov    %ebp,0x40(%rsp)
  mov    %edx,0x2c(%rsp)
  cmp    %edx,0x4(%rsp)
  jl     L108
L90:
  mov    0x40(%rsp),%ebx
  cmp    %ebx,0x78(%rsp)
  jle    L100
  mov    %ebx,0x4(%rsp)
  jmp    L635
L781:
  sub    $0x1,%edx
  mov    %ecx,(%r8)
  mov    %r9d,%ebp
  mov    %ebx,(%r10)
  cmp    %edx,%r9d
  jg     L468
  movslq %edx,%rax
L757:
  add    $0x4,%r8
  add    $0x1,%r9d
  add    $0x1,%edi
  jmp    L323
L108:
  movslq %edx,%rax
  mov    0x4(%rsp),%edi
  mov    %rax,0x68(%rsp)
L555:
  mov    0x2c(%rsp),%ebx
  mov    %edi,%edx
  lea    (%r15,%r11,4),%r8
  mov    %r14d,%r9d
  add    %ebx,%edx
  mov    %edx,%eax
  shr    $0x1f,%eax
  add    %edx,%eax
  mov    %ebx,%edx
  sar    %eax
  cltq
  mov    (%r15,%rax,4),%esi
  mov    0x68(%rsp),%rax
  nopl   0x0(%rax,%rax,1)
L204:
  mov    (%r8),%ebx
  lea    (%r15,%rax,4),%r10
  mov    %edi,%ebp
  mov    (%r10),%ecx
  cmp    %ebx,%esi
  jg     L743
  cmp    %ecx,%esi
  jge    L238
  lea    -0x4(%r15,%rax,4),%rax
  nopl   0x0(%rax)
L65:
  mov    %rax,%r10
  mov    (%rax),%ecx
  sub    $0x4,%rax
  sub    $0x1,%edx
  cmp    %ecx,%esi
  jl     L65
L238:
  cmp    %edx,%edi
  jle    L44
L153:
  mov    %ebp,0x44(%rsp)
  mov    %edx,0x30(%rsp)
  cmp    %edx,0x4(%rsp)
  jl     L25
L596:
  mov    0x44(%rsp),%ebx
  cmp    %ebx,0x2c(%rsp)
  jle    L90
  movslq %ebx,%r11
  mov    %r11d,0x4(%rsp)
  lea    0x1(%r11),%r14d
  mov    %r11d,%edi
  jmp    L555
L44:
  sub    $0x1,%edx
  mov    %ecx,(%r8)
  mov    %r9d,%ebp
  mov    %ebx,(%r10)
  cmp    %edx,%r9d
  jg     L153
  movslq %edx,%rax
L743:
  add    $0x4,%r8
  add    $0x1,%r9d
  add    $0x1,%edi
  jmp    L204
L25:
  movslq %edx,%rax
  mov    0x4(%rsp),%edi
  mov    %rax,0x60(%rsp)
L102:
  mov    0x30(%rsp),%ebx
  mov    %edi,%edx
  lea    (%r15,%r11,4),%r8
  mov    %r14d,%r9d
  add    %ebx,%edx
  mov    %edx,%eax
  shr    $0x1f,%eax
  add    %edx,%eax
  mov    %ebx,%edx
  sar    %eax
  cltq
  mov    (%r15,%rax,4),%esi
  mov    0x60(%rsp),%rax
  nopl   0x0(%rax)
L790:
  mov    (%r8),%ebx
  lea    (%r15,%rax,4),%r10
  mov    %edi,%ebp
  mov    (%r10),%ecx
  cmp    %ebx,%esi
  jg     L240
  cmp    %ecx,%esi
  jge    L484
  lea    -0x4(%r15,%rax,4),%rax
  nopl   0x0(%rax)
L142:
  mov    %rax,%r10
  mov    (%rax),%ecx
  sub    $0x4,%rax
  sub    $0x1,%edx
  cmp    %ecx,%esi
  jl     L142
L484:
  cmp    %edx,%edi
  jle    L526
L779:
  mov    %ebp,0x48(%rsp)
  mov    %edx,0x34(%rsp)
  cmp    %edx,0x4(%rsp)
  jl     L630
L511:
  mov    0x48(%rsp),%ebx
  cmp    %ebx,0x30(%rsp)
  jle    L596
  movslq %ebx,%r11
  mov    %r11d,0x4(%rsp)
  lea    0x1(%r11),%r14d
  mov    %r11d,%edi
  jmp    L102
L526:
  sub    $0x1,%edx
  mov    %ecx,(%r8)
  mov    %r9d,%ebp
  mov    %ebx,(%r10)
  cmp    %edx,%r9d
  jg     L779
  movslq %edx,%rax
L240:
  add    $0x4,%r8
  add    $0x1,%r9d
  add    $0x1,%edi
  jmp    L790
L630:
  movslq %edx,%rax
  mov    0x4(%rsp),%edi
  mov    %rax,0x58(%rsp)
L406:
  mov    0x34(%rsp),%ebx
  mov    %edi,%edx
  lea    (%r15,%r11,4),%r8
  mov    %r14d,%r9d
  add    %ebx,%edx
  mov    %edx,%eax
  shr    $0x1f,%eax
  add    %edx,%eax
  mov    %ebx,%edx
  sar    %eax
  cltq
  mov    (%r15,%rax,4),%esi
  mov    0x58(%rsp),%rax
  nopl   0x0(%rax)
L707:
  mov    (%r8),%ebx
  lea    (%r15,%rax,4),%r10
  mov    %edi,%ebp
  mov    (%r10),%ecx
  cmp    %ebx,%esi
  jg     L403
  cmp    %ecx,%esi
  jge    L465
  lea    -0x4(%r15,%rax,4),%rax
  nopl   0x0(%rax)
L773:
  mov    %rax,%r10
  mov    (%rax),%ecx
  sub    $0x4,%rax
  sub    $0x1,%edx
  cmp    %ecx,%esi
  jl     L773
L465:
  cmp    %edx,%edi
  jle    L358
L633:
  mov    %ebp,0x4c(%rsp)
  mov    %edx,0x1c(%rsp)
  cmp    %edx,0x4(%rsp)
  jl     L186
L443:
  mov    0x4c(%rsp),%ebx
  cmp    %ebx,0x34(%rsp)
  jle    L511
  movslq %ebx,%r11
  mov    %r11d,0x4(%rsp)
  lea    0x1(%r11),%r14d
  mov    %r11d,%edi
  jmp    L406
L358:
  sub    $0x1,%edx
  mov    %ecx,(%r8)
  mov    %r9d,%ebp
  mov    %ebx,(%r10)
  cmp    %edx,%r9d
  jg     L633
  movslq %edx,%rax
L403:
  add    $0x4,%r8
  add    $0x1,%r9d
  add    $0x1,%edi
  jmp    L707
L186:
  movslq %edx,%rax
  mov    0x4(%rsp),%edi
  mov    %r14d,%r13d
  mov    %rax,0x50(%rsp)
L769:
  mov    0x1c(%rsp),%r14d
  mov    %edi,%edx
  lea    (%r15,%r11,4),%r8
  mov    %r13d,%r9d
  add    %r14d,%edx
  mov    %edx,%eax
  shr    $0x1f,%eax
  add    %edx,%eax
  sar    %eax
  cltq
  mov    (%r15,%rax,4),%esi
  mov    0x50(%rsp),%rax
  nopl   0x0(%rax)
L78:
  mov    (%r8),%r10d
  lea    (%r15,%rax,4),%rcx
  mov    %edi,%ebx
  mov    (%rcx),%edx
  cmp    %r10d,%esi
  jg     L408
  cmp    %edx,%esi
  jge    L326
  lea    -0x4(%r15,%rax,4),%rax
  nopl   0x0(%rax)
L826:
  mov    %rax,%rcx
  mov    (%rax),%edx
  sub    $0x4,%rax
  sub    $0x1,%r14d
  cmp    %edx,%esi
  jl     L826
L326:
  cmp    %r14d,%edi
  jle    L295
L644:
  mov    %ebx,0x28(%rsp)
  cmp    %r14d,0x4(%rsp)
  jl     L16
L149:
  mov    0x28(%rsp),%ebx
  cmp    %ebx,0x1c(%rsp)
  jle    L443
  movslq %ebx,%r11
  mov    %r11d,0x4(%rsp)
  lea    0x1(%r11),%r13d
  mov    %r11d,%edi
  jmp    L769
  nopl   0x0(%rax,%rax,1)
L295:
  sub    $0x1,%r14d
  mov    %edx,(%r8)
  mov    %r9d,%ebx
  mov    %r10d,(%rcx)
  cmp    %r14d,%r9d
  jg     L644
  movslq %r14d,%rax
L408:
  add    $0x4,%r8
  add    $0x1,%r9d
  add    $0x1,%edi
  jmp    L78
L16:
  movslq %r14d,%rax
  mov    %r14d,0x18(%rsp)
  mov    0x4(%rsp),%edi
  mov    %r13d,%r12d
  mov    %rax,0x38(%rsp)
L801:
  mov    0x18(%rsp),%r14d
  mov    %edi,%edx
  lea    (%r15,%r11,4),%r8
  mov    %r12d,%r9d
  add    %r14d,%edx
  mov    %edx,%eax
  shr    $0x1f,%eax
  add    %edx,%eax
  sar    %eax
  cltq
  mov    (%r15,%rax,4),%esi
  mov    0x38(%rsp),%rax
  xchg   %ax,%ax
L62:
  mov    (%r8),%r10d
  lea    (%r15,%rax,4),%rcx
  mov    %edi,%ebx
  mov    (%rcx),%edx
  cmp    %r10d,%esi
  jg     L271
  cmp    %edx,%esi
  jge    L474
  lea    -0x4(%r15,%rax,4),%rax
  nopl   0x0(%rax)
L533:
  mov    %rax,%rcx
  mov    (%rax),%edx
  sub    $0x4,%rax
  sub    $0x1,%r14d
  cmp    %edx,%esi
  jl     L533
L474:
  cmp    %edi,%r14d
  jge    L449
L455:
  mov    %ebx,0x14(%rsp)
  cmp    %r14d,0x4(%rsp)
  jl     L85
L243:
  mov    0x14(%rsp),%ebx
  cmp    %ebx,0x18(%rsp)
  jle    L149
  movslq %ebx,%r11
  mov    %r11d,0x4(%rsp)
  lea    0x1(%r11),%r12d
  mov    %r11d,%edi
  jmp    L801
  nopl   0x0(%rax,%rax,1)
L449:
  sub    $0x1,%r14d
  mov    %edx,(%r8)
  mov    %r9d,%ebx
  mov    %r10d,(%rcx)
  cmp    %r14d,%r9d
  jg     L455
  movslq %r14d,%rax
L271:
  add    $0x4,%r8
  add    $0x1,%r9d
  add    $0x1,%edi
  jmp    L62
L85:
  movslq %r14d,%rax
  mov    %r14d,0x10(%rsp)
  mov    0x4(%rsp),%edi
  mov    %rax,0x20(%rsp)
L106:
  mov    0x10(%rsp),%ebp
  mov    %edi,%edx
  lea    (%r15,%r11,4),%r8
  mov    %r12d,%r9d
  add    %ebp,%edx
  mov    %edx,%eax
  shr    $0x1f,%eax
  add    %edx,%eax
  sar    %eax
  cltq
  mov    (%r15,%rax,4),%esi
  mov    0x20(%rsp),%rax
  nopl   0x0(%rax)
L281:
  mov    (%r8),%r10d
  lea    (%r15,%rax,4),%rcx
  mov    %edi,%r14d
  mov    (%rcx),%edx
  cmp    %r10d,%esi
  jg     L197
  cmp    %edx,%esi
  jge    L618
  lea    -0x4(%r15,%rax,4),%rax
  nopw   0x0(%rax,%rax,1)
L820:
  mov    %rax,%rcx
  mov    (%rax),%edx
  sub    $0x4,%rax
  sub    $0x1,%ebp
  cmp    %edx,%esi
  jl     L820
L618:
  cmp    %ebp,%edi
  jle    L799
L615:
  cmp    %ebp,0x4(%rsp)
  jl     L37
L139:
  cmp    %r14d,0x10(%rsp)
  jle    L243
  movslq %r14d,%r11
  mov    %r11d,0x4(%rsp)
  lea    0x1(%r11),%r12d
  mov    %r11d,%edi
  jmp    L106
  xchg   %ax,%ax
L799:
  sub    $0x1,%ebp
  mov    %edx,(%r8)
  mov    %r9d,%r14d
  mov    %r10d,(%rcx)
  cmp    %ebp,%r9d
  jg     L615
  movslq %ebp,%rax
L197:
  add    $0x4,%r8
  add    $0x1,%r9d
  add    $0x1,%edi
  jmp    L281
L37:
  movslq %ebp,%rax
  mov    %r14d,0x7c(%rsp)
  mov    0x4(%rsp),%r14d
  mov    %r12d,%r10d
  mov    %rax,0x8(%rsp)
L726:
  lea    (%r14,%rbp,1),%edx
  lea    (%r15,%r11,4),%r8
  mov    %r14d,%edi
  mov    %r10d,%r9d
  mov    %edx,%eax
  mov    %ebp,%ebx
  shr    $0x1f,%eax
  add    %edx,%eax
  sar    %eax
  cltq
  mov    (%r15,%rax,4),%esi
  mov    0x8(%rsp),%rax
  nopw   0x0(%rax,%rax,1)
L706:
  mov    (%r8),%r12d
  lea    (%r15,%rax,4),%rcx
  mov    %edi,%r13d
  mov    (%rcx),%edx
  cmp    %r12d,%esi
  jg     L212
  cmp    %edx,%esi
  jge    L599
  lea    -0x4(%r15,%rax,4),%rax
  nopw   0x0(%rax,%rax,1)
L22:
  mov    %rax,%rcx
  mov    (%rax),%edx
  sub    $0x4,%rax
  sub    $0x1,%ebx
  cmp    %edx,%esi
  jl     L22
L599:
  cmp    %ebx,%edi
  jle    L703
L439:
  cmp    %ebx,%r14d
  jl     L515
  cmp    %r13d,%ebp
  jle    L242
L213:
  movslq %r13d,%r11
  mov    %r11,%r14
  lea    0x1(%r11),%r10d
  jmp    L726
  xchg   %ax,%ax
L703:
  sub    $0x1,%ebx
  mov    %edx,(%r8)
  mov    %r9d,%r13d
  mov    %r12d,(%rcx)
  cmp    %ebx,%r9d
  jg     L439
  movslq %ebx,%rax
L212:
  add    $0x4,%r8
  add    $0x1,%r9d
  add    $0x1,%edi
  jmp    L706
L515:
  movslq %ebx,%rax
  mov    %ebp,0x4(%rsp)
  mov    %rax,%rbp
L430:
  lea    (%r14,%rbx,1),%edx
  lea    (%r15,%r11,4),%r9
  mov    %r14d,%r8d
  mov    %edx,%eax
  shr    $0x1f,%eax
  add    %edx,%eax
  mov    %ebx,%edx
  sar    %eax
  cltq
  mov    (%r15,%rax,4),%edi
  mov    %rbp,%rax
  nopw   0x0(%rax,%rax,1)
L50:
  mov    (%r9),%r11d
  lea    (%r15,%rax,4),%rsi
  mov    %r8d,%r12d
  mov    (%rsi),%ecx
  cmp    %r11d,%edi
  jg     L584
  cmp    %ecx,%edi
  jge    L131
  lea    -0x4(%r15,%rax,4),%rax
  nopw   0x0(%rax,%rax,1)
L371:
  mov    %rax,%rsi
  mov    (%rax),%ecx
  sub    $0x4,%rax
  sub    $0x1,%edx
  cmp    %ecx,%edi
  jl     L371
L131:
  cmp    %r8d,%edx
  jge    L713
L60:
  cmp    %edx,%r14d
  jl     L13
L784:
  cmp    %r12d,%ebx
  jle    L776
  movslq %r12d,%r11
  mov    %r11,%r14
  lea    0x1(%r11),%r10d
  jmp    L430
  nopl   0x0(%rax,%rax,1)
L713:
  sub    $0x1,%edx
  mov    %ecx,(%r9)
  mov    %r10d,%r12d
  mov    %r11d,(%rsi)
  cmp    %edx,%r10d
  jg     L60
  movslq %edx,%rax
L584:
  add    $0x4,%r9
  add    $0x1,%r10d
  add    $0x1,%r8d
  jmp    L50
L776:
  mov    0x4(%rsp),%ebp
  cmp    %r13d,%ebp
  jg     L213
L242:
  mov    0x7c(%rsp),%r14d
  jmp    L139
L13:
  mov    %r14d,%esi
  mov    %r15,%rdi
  xor    %eax,%eax
  call   <Quicksort>
  jmp    L784
L100:
  add    $0x88,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
```

assistant: ```c
Quicksort(a, l, r) int a[], l, r;
{
  int i, j, x, w;
  i = l;
  j = r;
  x = a[(l + r) / 2];
  do {
    while (a[i] < x)
      i = i + 1;
    while (x < a[j])
      j = j - 1;
    if (i <= j) {
      w = a[i];
      a[i] = a[j];
      a[j] = w;
      i = i + 1;
      j = j - 1;
    }
  } while (i <= j);
  if (l < j)
    Quicksort(a, l, j);
  if (i < r)
    Quicksort(a, i, r);
}
```