user: 下面的汇编指令对应的C源代码是什么：

```asm
<router_solicitation>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  add    $0xffffffffffffff80,%rsp
  mov    %rdi,-0x68(%rbp)
  mov    %rsi,-0x70(%rbp)
  mov    %rdx,-0x78(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movl   $0x0,-0x5c(%rbp)
  movq   $0x0,-0x50(%rbp)
  movq   $0x0,-0x48(%rbp)
  movq   $0x0,-0x40(%rbp)
  movq   $0x0,-0x38(%rbp)
  movq   $0x0,-0x30(%rbp)
  movq   $0x0,-0x28(%rbp)
  movq   $0x0,-0x20(%rbp)
  movq   $0x0,-0x18(%rbp)
  movl   $0xff,-0x50(%rbp)
  movl   $0x2,-0x4c(%rbp)
  movl   $0x2,-0x14(%rbp)
  movl   $0x0,-0x58(%rbp)
  mov    -0x70(%rbp),%rax
  movb   $0x60,(%rax)
  mov    -0x70(%rbp),%rax
  add    $0x1,%rax
  movb   $0x0,(%rax)
  mov    -0x70(%rbp),%rax
  add    $0x2,%rax
  movb   $0x0,(%rax)
  mov    -0x70(%rbp),%rax
  add    $0x3,%rax
  movb   $0x0,(%rax)
  addl   $0x4,-0x5c(%rbp)
  addl   $0x2,-0x5c(%rbp)
  mov    -0x5c(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x70(%rbp),%rax
  add    %rdx,%rax
  movb   $0x3a,(%rax)
  addl   $0x1,-0x5c(%rbp)
  mov    -0x5c(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x70(%rbp),%rax
  add    %rdx,%rax
  movb   $0xff,(%rax)
  addl   $0x1,-0x5c(%rbp)
  movl   $0x0,-0x60(%rbp)
  jmp    L8
L35:
  mov    -0x60(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%edx
  mov    -0x5c(%rbp),%ecx
  mov    -0x60(%rbp),%eax
  add    %ecx,%eax
  movslq %eax,%rcx
  mov    -0x70(%rbp),%rax
  add    %rcx,%rax
  mov    %dl,(%rax)
  mov    -0x60(%rbp),%eax
  cltq
  mov    -0x50(%rbp,%rax,4),%edx
  mov    -0x5c(%rbp),%eax
  lea    0x10(%rax),%ecx
  mov    -0x60(%rbp),%eax
  add    %ecx,%eax
  movslq %eax,%rcx
  mov    -0x70(%rbp),%rax
  add    %rcx,%rax
  mov    %dl,(%rax)
  addl   $0x1,-0x60(%rbp)
L8:
  cmpl   $0xf,-0x60(%rbp)
  jle    L35
  addl   $0x20,-0x5c(%rbp)
  mov    -0x5c(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x70(%rbp),%rax
  add    %rdx,%rax
  movb   $0x85,(%rax)
  addl   $0x1,-0x5c(%rbp)
  mov    -0x5c(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x70(%rbp),%rax
  add    %rdx,%rax
  movb   $0x0,(%rax)
  addl   $0x1,-0x5c(%rbp)
  addl   $0x2,-0x5c(%rbp)
  mov    -0x5c(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x70(%rbp),%rax
  add    %rdx,%rax
  movb   $0x0,(%rax)
  mov    -0x5c(%rbp),%eax
  cltq
  lea    0x1(%rax),%rdx
  mov    -0x70(%rbp),%rax
  add    %rdx,%rax
  movb   $0x0,(%rax)
  mov    -0x5c(%rbp),%eax
  cltq
  lea    0x2(%rax),%rdx
  mov    -0x70(%rbp),%rax
  add    %rdx,%rax
  movb   $0x0,(%rax)
  mov    -0x5c(%rbp),%eax
  cltq
  lea    0x3(%rax),%rdx
  mov    -0x70(%rbp),%rax
  add    %rdx,%rax
  movb   $0x0,(%rax)
  addl   $0x4,-0x5c(%rbp)
  mov    -0x5c(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x70(%rbp),%rax
  add    %rdx,%rax
  movb   $0x1,(%rax)
  addl   $0x1,-0x5c(%rbp)
  mov    -0x5c(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x70(%rbp),%rax
  add    %rdx,%rax
  movb   $0x1,(%rax)
  addl   $0x1,-0x5c(%rbp)
  movl   $0x2,-0x60(%rbp)
  jmp    L1
L49:
  mov    -0x60(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x78(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%edx
  mov    -0x60(%rbp),%eax
  lea    -0x2(%rax),%ecx
  mov    -0x5c(%rbp),%eax
  add    %ecx,%eax
  movslq %eax,%rcx
  mov    -0x70(%rbp),%rax
  add    %rcx,%rax
  mov    %dl,(%rax)
  addl   $0x1,-0x60(%rbp)
L1:
  cmpl   $0x7,-0x60(%rbp)
  jle    L49
  addl   $0x6,-0x5c(%rbp)
  mov    -0x5c(%rbp),%eax
  sub    $0x28,%eax
  mov    %eax,-0x54(%rbp)
  mov    -0x54(%rbp),%eax
  sar    $0x8,%eax
  mov    %eax,%edx
  mov    -0x70(%rbp),%rax
  add    $0x4,%rax
  mov    %dl,(%rax)
  mov    -0x70(%rbp),%rax
  add    $0x5,%rax
  mov    -0x54(%rbp),%edx
  mov    %dl,(%rax)
  mov    -0x5c(%rbp),%edx
  mov    -0x70(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <checksum_icmpv6@plt>
  mov    %eax,-0x58(%rbp)
  mov    -0x58(%rbp),%eax
  sar    $0x8,%eax
  mov    %eax,%edx
  mov    -0x70(%rbp),%rax
  add    $0x2a,%rax
  mov    %dl,(%rax)
  mov    -0x70(%rbp),%rax
  add    $0x2b,%rax
  mov    -0x58(%rbp),%edx
  mov    %dl,(%rax)
  mov    -0x70(%rbp),%rax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L44
  call   <__stack_chk_fail@plt>
L44:
  leave
  ret
```

assistant: ```c
char *router_solicitation(uint8_t *src_address, char *buffer, uint8_t *mac_address) {
  int offset = 0;
  uint8_t dst_address[16] = {0xff, 0x02, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x02};
  uint16_t payload_length;
  uint16_t checksum = 0;
  int ix;
  buffer[0] = 0x60;
  buffer[1] = 0;
  buffer[2] = 0;
  buffer[3] = 0;
  offset += 4;
  offset += 2;
  buffer[offset] = 0x3a;
  offset += 1;
  buffer[offset] = 255;
  offset += 1;
  for (ix = 0; ix < 16; ix++) {
    buffer[offset + ix] = src_address[ix];
    buffer[offset + 16 + ix] = dst_address[ix];
  }
  offset += 32;
  buffer[offset] = 0x85;
  offset += 1;
  buffer[offset] = 0;
  offset += 1;
  offset += 2;
  buffer[offset] = 0;
  buffer[offset + 1] = 0;
  buffer[offset + 2] = 0;
  buffer[offset + 3] = 0;
  offset += 4;
  buffer[offset] = 1;
  offset += 1;
  buffer[offset] = 1;
  offset += 1;
  for (ix = 2; ix < 8; ix++) {
    buffer[offset + (ix - 2)] = mac_address[ix];
  }
  offset += 6;
  payload_length = (offset - 40);
  buffer[4] = (payload_length >> 8) & 255;
  buffer[5] = (payload_length >> 0) & 255;
  checksum = checksum_icmpv6(buffer, (offset));
  buffer[42] = (checksum >> 8) & 255;
  buffer[43] = (checksum >> 0) & 255;
  return buffer;
}
```