user: 请从给定的汇编指令推导出C源代码:

```asm
<computeBWT>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x50,%rsp
  mov    %rdi,-0x28(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    %rdx,-0x38(%rbp)
  mov    %rcx,-0x40(%rbp)
  mov    %r8d,-0x44(%rbp)
  mov    %r9d,-0x48(%rbp)
  movl   $0xffffffff,-0x18(%rbp)
  mov    -0x38(%rbp),%rax
  cmp    -0x40(%rbp),%rax
  jne    L105
  mov    -0x48(%rbp),%ecx
  mov    -0x44(%rbp),%edx
  mov    -0x38(%rbp),%rsi
  mov    -0x28(%rbp),%rax
  mov    0x10(%rbp),%r8d
  mov    %rax,%rdi
  call   <getCounts@plt>
L105:
  mov    -0x48(%rbp),%edx
  mov    -0x40(%rbp),%rsi
  mov    -0x38(%rbp),%rax
  mov    $0x0,%ecx
  mov    %rax,%rdi
  call   <getBuckets@plt>
  mov    -0x44(%rbp),%eax
  sub    $0x1,%eax
  mov    %eax,-0x10(%rbp)
  cmpl   $0x4,0x10(%rbp)
  jne    L375
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  jmp    L436
L375:
  mov    -0x10(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
L436:
  mov    %eax,-0x14(%rbp)
  mov    -0x14(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x8(%rbp)
  cmpl   $0x0,-0x10(%rbp)
  jle    L374
  cmpl   $0x4,0x10(%rbp)
  jne    L237
  mov    -0x10(%rbp),%eax
  cltq
  shl    $0x2,%rax
  lea    -0x4(%rax),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  jmp    L202
L237:
  mov    -0x10(%rbp),%eax
  cltq
  lea    -0x1(%rax),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
L202:
  cmp    -0x14(%rbp),%eax
  jge    L374
  mov    -0x10(%rbp),%eax
  not    %eax
  mov    %eax,%edx
  jmp    L341
L374:
  mov    -0x10(%rbp),%edx
L341:
  mov    -0x8(%rbp),%rax
  lea    0x4(%rax),%rcx
  mov    %rcx,-0x8(%rbp)
  mov    %edx,(%rax)
  movl   $0x0,-0x1c(%rbp)
  jmp    L274
L231:
  mov    -0x1c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  mov    %eax,-0x10(%rbp)
  cmpl   $0x0,-0x10(%rbp)
  jle    L254
  subl   $0x1,-0x10(%rbp)
  cmpl   $0x4,0x10(%rbp)
  jne    L32
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%edx
  jmp    L370
L32:
  mov    -0x10(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%edx
L370:
  cmpl   $0x4,0x10(%rbp)
  jne    L7
  mov    -0x10(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rcx
  mov    -0x28(%rbp),%rax
  add    %rcx,%rax
  mov    (%rax),%eax
  jmp    L371
L7:
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x1(%rax),%rcx
  mov    -0x28(%rbp),%rax
  add    %rcx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
L371:
  cmp    %eax,%edx
  setge  %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  cmpl   $0x4,0x10(%rbp)
  jne    L190
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  jmp    L21
L190:
  mov    -0x10(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
L21:
  mov    %eax,-0xc(%rbp)
  mov    -0x1c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    -0xc(%rbp),%edx
  not    %edx
  mov    %edx,(%rax)
  mov    -0xc(%rbp),%eax
  cmp    -0x14(%rbp),%eax
  je     L429
  mov    -0x8(%rbp),%rax
  sub    -0x30(%rbp),%rax
  sar    $0x2,%rax
  mov    %rax,%rdx
  mov    -0x14(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rcx
  mov    -0x40(%rbp),%rax
  add    %rcx,%rax
  mov    %edx,(%rax)
  mov    -0xc(%rbp),%eax
  mov    %eax,-0x14(%rbp)
  mov    -0x14(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x8(%rbp)
L429:
  mov    -0x1c(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x8(%rbp),%rax
  sub    -0x30(%rbp),%rax
  sar    $0x2,%rax
  cmp    %rax,%rdx
  setl   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  cmpl   $0x0,-0x10(%rbp)
  jle    L214
  cmpl   $0x4,0x10(%rbp)
  jne    L120
  mov    -0x10(%rbp),%eax
  cltq
  shl    $0x2,%rax
  lea    -0x4(%rax),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  jmp    L5
L120:
  mov    -0x10(%rbp),%eax
  cltq
  lea    -0x1(%rax),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
L5:
  cmp    -0x14(%rbp),%eax
  jge    L214
  mov    -0x10(%rbp),%eax
  not    %eax
  mov    %eax,%edx
  jmp    L40
L214:
  mov    -0x10(%rbp),%edx
L40:
  mov    -0x8(%rbp),%rax
  lea    0x4(%rax),%rcx
  mov    %rcx,-0x8(%rbp)
  mov    %edx,(%rax)
  jmp    L315
L254:
  cmpl   $0x0,-0x10(%rbp)
  je     L315
  mov    -0x1c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    -0x10(%rbp),%edx
  not    %edx
  mov    %edx,(%rax)
L315:
  addl   $0x1,-0x1c(%rbp)
L274:
  mov    -0x1c(%rbp),%eax
  cmp    -0x44(%rbp),%eax
  jl     L231
  mov    -0x38(%rbp),%rax
  cmp    -0x40(%rbp),%rax
  jne    L261
  mov    -0x48(%rbp),%ecx
  mov    -0x44(%rbp),%edx
  mov    -0x38(%rbp),%rsi
  mov    -0x28(%rbp),%rax
  mov    0x10(%rbp),%r8d
  mov    %rax,%rdi
  call   <getCounts@plt>
L261:
  mov    -0x48(%rbp),%edx
  mov    -0x40(%rbp),%rsi
  mov    -0x38(%rbp),%rax
  mov    $0x1,%ecx
  mov    %rax,%rdi
  call   <getBuckets@plt>
  mov    -0x44(%rbp),%eax
  sub    $0x1,%eax
  mov    %eax,-0x1c(%rbp)
  movl   $0x0,-0x14(%rbp)
  mov    -0x40(%rbp),%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x8(%rbp)
  jmp    L260
L149:
  mov    -0x1c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  mov    %eax,-0x10(%rbp)
  cmpl   $0x0,-0x10(%rbp)
  jle    L346
  subl   $0x1,-0x10(%rbp)
  cmpl   $0x4,0x10(%rbp)
  jne    L136
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%edx
  jmp    L277
L136:
  mov    -0x10(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%edx
L277:
  cmpl   $0x4,0x10(%rbp)
  jne    L443
  mov    -0x10(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rcx
  mov    -0x28(%rbp),%rax
  add    %rcx,%rax
  mov    (%rax),%eax
  jmp    L56
L443:
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x1(%rax),%rcx
  mov    -0x28(%rbp),%rax
  add    %rcx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
L56:
  cmp    %eax,%edx
  setle  %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  cmpl   $0x4,0x10(%rbp)
  jne    L426
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  jmp    L104
L426:
  mov    -0x10(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
L104:
  mov    %eax,-0xc(%rbp)
  mov    -0x1c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rax,%rdx
  mov    -0xc(%rbp),%eax
  mov    %eax,(%rdx)
  mov    -0xc(%rbp),%eax
  cmp    -0x14(%rbp),%eax
  je     L459
  mov    -0x8(%rbp),%rax
  sub    -0x30(%rbp),%rax
  sar    $0x2,%rax
  mov    %rax,%rdx
  mov    -0x14(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rcx
  mov    -0x40(%rbp),%rax
  add    %rcx,%rax
  mov    %edx,(%rax)
  mov    -0xc(%rbp),%eax
  mov    %eax,-0x14(%rbp)
  mov    -0x14(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x8(%rbp)
L459:
  mov    -0x8(%rbp),%rax
  sub    -0x30(%rbp),%rax
  sar    $0x2,%rax
  mov    %rax,%rdx
  mov    -0x1c(%rbp),%eax
  cltq
  cmp    %rax,%rdx
  setle  %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  cmpl   $0x0,-0x10(%rbp)
  jle    L333
  cmpl   $0x4,0x10(%rbp)
  jne    L301
  mov    -0x10(%rbp),%eax
  cltq
  shl    $0x2,%rax
  lea    -0x4(%rax),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  jmp    L395
L301:
  mov    -0x10(%rbp),%eax
  cltq
  lea    -0x1(%rax),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
L395:
  cmp    -0x14(%rbp),%eax
  jle    L333
  cmpl   $0x4,0x10(%rbp)
  jne    L288
  mov    -0x10(%rbp),%eax
  cltq
  shl    $0x2,%rax
  lea    -0x4(%rax),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  not    %eax
  jmp    L424
L288:
  mov    -0x10(%rbp),%eax
  cltq
  lea    -0x1(%rax),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  not    %eax
  jmp    L424
L333:
  mov    -0x10(%rbp),%eax
L424:
  subq   $0x4,-0x8(%rbp)
  mov    -0x8(%rbp),%rdx
  mov    %eax,(%rdx)
  jmp    L68
L346:
  cmpl   $0x0,-0x10(%rbp)
  je     L1
  mov    -0x1c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    -0x10(%rbp),%edx
  not    %edx
  mov    %edx,(%rax)
  jmp    L68
L1:
  mov    -0x1c(%rbp),%eax
  mov    %eax,-0x18(%rbp)
L68:
  subl   $0x1,-0x1c(%rbp)
L260:
  cmpl   $0x0,-0x1c(%rbp)
  jns    L149
  mov    -0x18(%rbp),%eax
  leave
  ret
```

assistant: ```c
int computeBWT(const void *T, int *SA, int *C, int *B, int n, int k, int cs) {
  int *b, i, j, pidx = -1;
  int c0, c1;
  if (C == B) {
    getCounts(T, C, n, k, cs);
  }
  getBuckets(C, B, k, 0);
  j = n - 1;
  b = SA + B[c1 = (cs == sizeof(int) ? ((int *)T)[(j)] : ((unsigned char *)T)[(j)])];
  *b++ = ((0 < j) && ((cs == sizeof(int) ? ((int *)T)[(j - 1)] : ((unsigned char *)T)[(j - 1)]) < c1)) ? ~j : j;
  for (i = 0; i < n; ++i) {
    if (0 < (j = SA[i])) {
      --j;
      assert((cs == sizeof(int) ? ((int *)T)[(j)] : ((unsigned char *)T)[(j)]) >= (cs == sizeof(int) ? ((int *)T)[(j + 1)] : ((unsigned char *)T)[(j + 1)]));
      SA[i] = ~((int)(c0 = (cs == sizeof(int) ? ((int *)T)[(j)] : ((unsigned char *)T)[(j)])));
      if (c0 != c1) {
        B[c1] = b - SA;
        b = SA + B[c1 = c0];
      }
      assert(i < (b - SA));
      *b++ = ((0 < j) && ((cs == sizeof(int) ? ((int *)T)[(j - 1)] : ((unsigned char *)T)[(j - 1)]) < c1)) ? ~j : j;
    } else if (j != 0) {
      SA[i] = ~j;
    }
  }
  if (C == B) {
    getCounts(T, C, n, k, cs);
  }
  getBuckets(C, B, k, 1);
  for (i = n - 1, b = SA + B[c1 = 0]; 0 <= i; --i) {
    if (0 < (j = SA[i])) {
      --j;
      assert((cs == sizeof(int) ? ((int *)T)[(j)] : ((unsigned char *)T)[(j)]) <= (cs == sizeof(int) ? ((int *)T)[(j + 1)] : ((unsigned char *)T)[(j + 1)]));
      SA[i] = (c0 = (cs == sizeof(int) ? ((int *)T)[(j)] : ((unsigned char *)T)[(j)]));
      if (c0 != c1) {
        B[c1] = b - SA;
        b = SA + B[c1 = c0];
      }
      assert((b - SA) <= i);
      *--b = ((0 < j) && ((cs == sizeof(int) ? ((int *)T)[(j - 1)] : ((unsigned char *)T)[(j - 1)]) > c1)) ? ~((int)(cs == sizeof(int) ? ((int *)T)[(j - 1)] : ((unsigned char *)T)[(j - 1)])) : j;
    } else if (j != 0) {
      SA[i] = ~j;
    } else {
      pidx = i;
    }
  }
  return pidx;
}
```