user: 这段汇编代码用C语言表示是什么样的?

```asm
<jerasure_invert_bitmatrix>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %edx,-0x38(%rsp)
  test   %edx,%edx
  jle    L266
  mov    -0x38(%rsp),%ebp
  mov    %rdi,%r13
  mov    %rsi,%r14
  xor    %r9d,%r9d
  xor    %esi,%esi
  lea    -0x1(%rbp),%eax
  mov    %rbp,%rdi
  mov    %eax,-0xc(%rsp)
  mov    %rax,-0x28(%rsp)
  nopl   0x0(%rax,%rax,1)
L4:
  movslq %esi,%rax
  lea    (%r14,%rax,4),%rcx
  xor    %eax,%eax
  nopl   0x0(%rax)
L145:
  xor    %edx,%edx
  cmp    %eax,%r9d
  sete   %dl
  mov    %edx,(%rcx,%rax,4)
  add    $0x1,%rax
  cmp    %rbp,%rax
  jne    L145
  lea    0x1(%r9),%eax
  add    %edi,%esi
  cmp    %eax,%edi
  je     L85
  mov    %eax,%r9d
  jmp    L4
L85:
  movslq -0x38(%rsp),%r11
  mov    -0x28(%rsp),%rbx
  xor    %r12d,%r12d
  mov    %eax,-0x10(%rsp)
  mov    %r13,-0x40(%rsp)
  lea    0x4(,%r11,4),%rax
  movl   $0x0,-0x34(%rsp)
  lea    0x0(,%r11,4),%r10
  mov    %rax,-0x20(%rsp)
  lea    0x4(%r13),%rax
  movq   $0x0,-0x30(%rsp)
  lea    (%rax,%rbx,4),%r15
  mov    %r13,%rbx
  mov    %rax,-0x8(%rsp)
  xor    %eax,%eax
  mov    %rbp,-0x18(%rsp)
  mov    %rax,%rbp
  nopl   0x0(%rax)
L278:
  mov    -0x40(%rsp),%rax
  lea    0x1(%r12),%r8d
  mov    (%rax),%esi
  test   %esi,%esi
  je     L52
L227:
  cmp    -0x28(%rsp),%r12
  je     L206
  mov    %r11,%rcx
  add    %r10,%r15
  add    %r10,%rbp
  mov    -0x38(%rsp),%esi
  add    %r11,-0x30(%rsp)
  neg    %rcx
  mov    %rbp,%rdi
  add    %esi,-0x34(%rsp)
  mov    %r15,%rsi
  jmp    L104
L25:
  lea    0x1(%r8),%eax
  sub    %r11,%rcx
  add    %r10,%rsi
  add    %r10,%rdi
  cmp    %r9d,%r8d
  je     L201
  mov    %eax,%r8d
L104:
  mov    (%rbx,%rdi,1),%edx
  test   %edx,%edx
  je     L25
  mov    %rdi,-0x48(%rsp)
  lea    0x0(%r13,%rdi,1),%rax
  lea    (%r14,%rdi,1),%rdx
  nopw   0x0(%rax,%rax,1)
L1:
  mov    (%rax,%rcx,4),%edi
  xor    %edi,(%rax)
  add    $0x4,%rax
  mov    (%rdx,%rcx,4),%edi
  xor    %edi,(%rdx)
  add    $0x4,%rdx
  cmp    %rsi,%rax
  jne    L1
  mov    -0x48(%rsp),%rdi
  jmp    L25
  xchg   %ax,%ax
L201:
  mov    -0x20(%rsp),%rsi
  add    $0x1,%r12
  add    %rsi,-0x40(%rsp)
  add    $0x4,%rbx
  cmp    -0x18(%rsp),%r12
  jne    L278
L206:
  movslq %r9d,%rax
  mov    -0x38(%rsp),%r15d
  mov    -0x8(%rsp),%rsi
  lea    0x0(,%r11,4),%r8
  lea    0x0(%r13,%rax,4),%r10
  mov    -0xc(%rsp),%eax
  mov    %r15d,%ebx
  imul   %r9d,%ebx
  lea    (%rsi,%rax,4),%r12
  test   %r9d,%r9d
  jle    L209
L234:
  movslq %ebx,%rcx
  mov    %r12,%rsi
  xor    %edi,%edi
  xor    %ebp,%ebp
  jmp    L244
  nopl   0x0(%rax,%rax,1)
L90:
  add    $0x1,%ebp
  sub    %r11,%rcx
  add    %r8,%rsi
  add    %r8,%rdi
  cmp    %r9d,%ebp
  je     L182
L244:
  mov    (%r10,%rdi,1),%eax
  test   %eax,%eax
  je     L90
  mov    %rdi,-0x48(%rsp)
  lea    0x0(%r13,%rdi,1),%rax
  lea    (%r14,%rdi,1),%rdx
  nopl   0x0(%rax,%rax,1)
L215:
  mov    (%rax,%rcx,4),%edi
  xor    %edi,(%rax)
  add    $0x4,%rax
  mov    (%rdx,%rcx,4),%edi
  xor    %edi,(%rdx)
  add    $0x4,%rdx
  cmp    %rax,%rsi
  jne    L215
  mov    -0x48(%rsp),%rdi
  jmp    L90
  xchg   %ax,%ax
L52:
  cmp    %r8d,-0x10(%rsp)
  jle    L87
  mov    -0x34(%rsp),%eax
  add    -0x38(%rsp),%eax
  cltq
  add    %r12,%rax
  lea    0x0(%r13,%rax,4),%rdx
  mov    %r8d,%eax
  jmp    L112
  nopw   0x0(%rax,%rax,1)
L229:
  lea    0x1(%rax),%ecx
  add    %r10,%rdx
  cmp    %r9d,%eax
  je     L257
  mov    %ecx,%eax
L112:
  mov    (%rdx),%ecx
  test   %ecx,%ecx
  je     L229
L170:
  mov    -0x10(%rsp),%esi
  cmp    %eax,%esi
  je     L257
  imul   %esi,%eax
  lea    0x0(%r13,%rbp,1),%rdx
  lea    (%r14,%rbp,1),%rcx
  cltq
  sub    -0x30(%rsp),%rax
  cs nopw 0x0(%rax,%rax,1)
L16:
  mov    (%rdx),%esi
  mov    (%rdx,%rax,4),%edi
  mov    %edi,(%rdx)
  mov    %esi,(%rdx,%rax,4)
  mov    (%rcx),%esi
  add    $0x4,%rdx
  mov    (%rcx,%rax,4),%edi
  mov    %edi,(%rcx)
  mov    %esi,(%rcx,%rax,4)
  add    $0x4,%rcx
  cmp    %r15,%rdx
  jne    L16
  jmp    L227
L257:
  pop    %rbx
  mov    $0xffffffff,%eax
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  cs nopw 0x0(%rax,%rax,1)
L182:
  lea    -0x1(%rbp),%r9d
L235:
  sub    $0x4,%r10
  sub    %r15d,%ebx
  test   %r9d,%r9d
  jg     L234
L209:
  sub    $0x1,%r9d
  jns    L235
L266:
  pop    %rbx
  xor    %eax,%eax
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L87:
  mov    %r8d,%eax
  jmp    L170
```

assistant: ```c
int jerasure_invert_bitmatrix(int *mat, int *inv, int rows) {
  int cols, i, j, k;
  int tmp;
  cols = rows;
  k = 0;
  for (i = 0; i < rows; i++) {
    for (j = 0; j < cols; j++) {
      inv[k] = (i == j) ? 1 : 0;
      k++;
    }
  }
  for (i = 0; i < cols; i++) {
    if ((mat[i * cols + i]) == 0) {
      for (j = i + 1; j < rows && (mat[j * cols + i]) == 0; j++)
        ;
      if (j == rows)
        return -1;
      for (k = 0; k < cols; k++) {
        tmp = mat[i * cols + k];
        mat[i * cols + k] = mat[j * cols + k];
        mat[j * cols + k] = tmp;
        tmp = inv[i * cols + k];
        inv[i * cols + k] = inv[j * cols + k];
        inv[j * cols + k] = tmp;
      }
    }
    for (j = i + 1; j != rows; j++) {
      if (mat[j * cols + i] != 0) {
        for (k = 0; k < cols; k++) {
          mat[j * cols + k] ^= mat[i * cols + k];
          inv[j * cols + k] ^= inv[i * cols + k];
        }
      }
    }
  }
  for (i = rows - 1; i >= 0; i--) {
    for (j = 0; j < i; j++) {
      if (mat[j * cols + i]) {
        for (k = 0; k < cols; k++) {
          mat[j * cols + k] ^= mat[i * cols + k];
          inv[j * cols + k] ^= inv[i * cols + k];
        }
      }
    }
  }
  return 0;
}
```