user: 下面的汇编指令对应的C源代码是什么:

```asm
<lob_bnd_lin_3>:
  endbr64
  push   %r15
  push   %r14
  mov    %r9d,%r14d
  push   %r13
  push   %r12
  push   %rbp
  mov    %edx,%ebp
  push   %rbx
  mov    %ecx,%ebx
  sub    $0xb8,%rsp
  mov    0x108(%rsp),%eax
  mov    %rsi,0x30(%rsp)
  mov    0x100(%rsp),%r10d
  mov    %rdi,0x48(%rsp)
  lea    (%rax,%rax,1),%edx
  mov    %ebp,%eax
  mov    %r8,0x98(%rsp)
  mov    0xf0(%rsp),%edi
  imul   %r9d,%r10d
  lea    0x0(,%rax,8),%r11
  add    %r11,%rsi
  imul   %ecx,%edi
  lea    0x0(%rbp,%rbp,1),%eax
  mov    %r11,0x8(%rsp)
  lea    (%rsi,%rax,8),%rax
  mov    %rsi,0x18(%rsp)
  mov    %rax,0x80(%rsp)
  mov    %rax,%rsi
  mov    %ecx,%eax
  lea    (%rsi,%rax,8),%rax
  mov    %r10d,0x58(%rsp)
  mov    %rax,0x88(%rsp)
  mov    %r9d,%eax
  lea    (%r8,%rax,8),%rsi
  lea    (%r9,%r9,1),%eax
  mov    %edi,0x5c(%rsp)
  lea    (%rsi,%rax,8),%r9
  mov    0xf0(%rsp),%eax
  mov    %rsi,0x90(%rsp)
  mov    0xf0(%rsp),%esi
  mov    %r9,0x20(%rsp)
  imul   %r14d,%eax
  add    %eax,%eax
  add    %rsi,%rax
  mov    0xf8(%rsp),%rsi
  lea    (%r9,%rax,8),%rax
  mov    %rax,0x28(%rsp)
  mov    0x100(%rsp),%eax
  lea    (%rsi,%rax,8),%rsi
  mov    0x100(%rsp),%eax
  mov    %rsi,0x60(%rsp)
  add    %eax,%eax
  lea    (%rsi,%rax,8),%r8
  mov    %edx,%eax
  mov    0x108(%rsp),%esi
  imul   0x100(%rsp),%eax
  mov    %r8,0x68(%rsp)
  add    %rsi,%rax
  lea    (%r8,%rax,8),%rax
  mov    %rax,0x70(%rsp)
  lea    (%rdi,%rdi,1),%eax
  shl    $0x3,%rax
  mov    %rax,0x10(%rsp)
  mov    0x118(%rsp),%r8d
  add    0x120(%rsp),%rax
  mov    %rax,0x50(%rsp)
  test   %r8d,%r8d
  je     L29
  add    %ecx,%ecx
  imul   %edi,%edx
  mov    %ebx,0x4(%rsp)
  mov    %ecx,%eax
  imul   %r14d,%ecx
  mov    %ebp,0xa8(%rsp)
  shl    $0x3,%rax
  mov    %r14d,0xac(%rsp)
  mov    %rax,0x38(%rsp)
  mov    %ecx,%eax
  shl    $0x3,%rax
  mov    %rax,0x40(%rsp)
  mov    %edx,%eax
  shl    $0x3,%rax
  mov    %rax,0x78(%rsp)
  lea    -0x1(%r10),%eax
  add    $0x1,%rax
  imul   %r11,%rax
  mov    %rax,0xa0(%rsp)
  nopl   (%rax)
L9:
  mov    0x58(%rsp),%eax
  mov    0x48(%rsp),%r15
  xor    %r12d,%r12d
  mov    0x110(%rsp),%r13
  test   %eax,%eax
  je     L40
  mov    %r12d,%r14d
  mov    %r15,%rbp
  mov    %r13,%rbx
  mov    0x88(%rsp),%r15
  mov    0x80(%rsp),%r13
  mov    0xa8(%rsp),%r12d
  nopl   0x0(%rax)
L6:
  push   %rbx
  mov    0xc(%rsp),%eax
  mov    %r13,%rcx
  mov    %rbp,%rdi
  mov    %r12d,%r9d
  mov    %r15,%r8
  add    $0x1,%r14d
  push   %rax
  mov    0x28(%rsp),%rdx
  mov    0x40(%rsp),%rsi
  call   <lob_bnd_fst@plt>
  add    0x48(%rsp),%rbp
  add    0x18(%rsp),%rbx
  pop    %rcx
  pop    %rsi
  cmp    %r14d,0x58(%rsp)
  jne    L6
  mov    0xa0(%rsp),%rax
  add    %rax,0x110(%rsp)
L40:
  mov    0x100(%rsp),%edx
  test   %edx,%edx
  je     L38
  mov    0x50(%rsp),%r15
  mov    0x48(%rsp),%r13
  xor    %r12d,%r12d
  mov    0x90(%rsp),%r14
  mov    %r13,%rbx
  mov    %r15,%rbp
  mov    0x98(%rsp),%r13
  mov    %r12d,%r15d
  mov    0xac(%rsp),%r12d
  nopl   (%rax)
L32:
  push   0x120(%rsp)
  mov    %rbp,%rdi
  mov    %r12d,%r9d
  mov    %r14,%rdx
  mov    0xc(%rsp),%eax
  mov    %r13,%rsi
  add    $0x1,%r15d
  push   %rax
  push   %rbx
  mov    0x108(%rsp),%eax
  push   %rax
  mov    0x48(%rsp),%r8
  mov    0x40(%rsp),%rcx
  call   <lob_bnd_ext@plt>
  add    0x60(%rsp),%rbx
  add    0x30(%rsp),%rbp
  add    $0x20,%rsp
  cmp    %r15d,0x100(%rsp)
  jne    L32
L38:
  push   0x120(%rsp)
  mov    0x64(%rsp),%eax
  push   %rax
  push   0x60(%rsp)
  mov    0x120(%rsp),%eax
  push   %rax
  mov    0x68(%rsp),%rbx
  mov    0x120(%rsp),%r9d
  mov    0x90(%rsp),%r8
  mov    0x88(%rsp),%rcx
  mov    0x80(%rsp),%rdx
  mov    %rbx,%rdi
  mov    0x118(%rsp),%rsi
  call   <lob_bnd_ext@plt>
  mov    0x98(%rsp),%rdi
  mov    %rbx,%rax
  add    %rdi,%rax
  mov    %rax,0x68(%rsp)
  add    $0x20,%rsp
  subl   $0x1,0x118(%rsp)
  jne    L9
L29:
  add    $0xb8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
```

assistant: ```c
void lob_bnd_lin_3(double *restrict b, const double *lob_bnd_data_r, unsigned nr, unsigned mr, const double *lob_bnd_data_s, unsigned ns, unsigned ms, const double *lob_bnd_data_t, unsigned nt, unsigned mt, const double *restrict u, unsigned int un, double *restrict work) {
  unsigned nst = ns * nt, mrst = mr * ms * mt, mrs = mr * ms, mr_ns = mr * ns;
  const double *zr = lob_bnd_data_r, *Qr = zr + nr, *hr = Qr + 2 * nr, *lb_r = hr + mr;
  const double *zs = lob_bnd_data_s, *Qs = zs + ns, *hs = Qs + 2 * ns, *lbnp_s = hs + ms + 2 * ns * ms;
  const double *zt = lob_bnd_data_t, *Qt = zt + nt, *ht = Qt + 2 * nt, *lbnp_t = ht + mt + 2 * nt * mt;
  double *a = work, *bs = a + 2 * mr * ms;
  for (; un; --un, b += 2 * mrst) {
    double *br_, *bs_;
    unsigned i;
    for (i = 0, br_ = b; i < nst; ++i, br_ += 2 * mr, u += nr)
      lob_bnd_fst(br_, zr, Qr, hr, lb_r, nr, mr, u);
    for (i = 0, br_ = b, bs_ = bs; i < nt; ++i, br_ += 2 * mr_ns, bs_ += 2 * mrs)
      lob_bnd_ext(bs_, zs, Qs, hs, lbnp_s, ns, ms, br_, mr, a);
    lob_bnd_ext(b, zt, Qt, ht, lbnp_t, nt, mt, bs, mrs, a);
  }
}
```