user: 下面的汇编指令对应的C源代码是什么：

```asm
<beta_RSA_padding_add_PKCS1_OAEP_mgf1>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r13
  push   %r12
  push   %rbx
  sub    $0x88,%rsp
  mov    %rdi,-0x68(%rbp)
  mov    %esi,-0x6c(%rbp)
  mov    %rdx,-0x78(%rbp)
  mov    %ecx,-0x70(%rbp)
  mov    %r8,-0x80(%rbp)
  mov    %r9d,-0x84(%rbp)
  mov    0x10(%rbp),%rax
  mov    %rax,-0x90(%rbp)
  mov    0x18(%rbp),%rax
  mov    %rax,-0x98(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x28(%rbp)
  xor    %eax,%eax
  mov    %rsp,%rax
  mov    %rax,%rbx
  mov    -0x6c(%rbp),%eax
  sub    $0x1,%eax
  mov    %eax,-0x58(%rbp)
  mov    D6(%rip),%rax
  mov    (%rax),%eax
  movslq %eax,%rdx
  sub    $0x1,%rdx
  mov    %rdx,-0x50(%rbp)
  movslq %eax,%rdx
  mov    %rdx,%r12
  mov    $0x0,%r13d
  movslq %eax,%rdx
  mov    %rdx,%r10
  mov    $0x0,%r11d
  cltq
  mov    $0x10,%edx
  sub    $0x1,%rdx
  add    %rdx,%rax
  mov    $0x10,%edi
  mov    $0x0,%edx
  div    %rdi
  imul   $0x10,%rax,%rax
  mov    %rax,%rcx
  and    $0xfffffffffffff000,%rcx
  mov    %rsp,%rdx
  sub    %rcx,%rdx
L156:
  cmp    %rdx,%rsp
  je     L220
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L156
L220:
  mov    %rax,%rdx
  and    $0xfff,%edx
  sub    %rdx,%rsp
  mov    %rax,%rdx
  and    $0xfff,%edx
  test   %rdx,%rdx
  je     L212
  and    $0xfff,%eax
  sub    $0x8,%rax
  add    %rsp,%rax
  orq    $0x0,(%rax)
L212:
  mov    %rsp,%rax
  add    $0x0,%rax
  mov    %rax,-0x48(%rbp)
  cmpq   $0x0,-0x90(%rbp)
  jne    L69
  mov    $0x0,%eax
  call   <EVP_sha1@plt>
  mov    %rax,-0x90(%rbp)
L69:
  cmpq   $0x0,-0x98(%rbp)
  jne    L84
  mov    -0x90(%rbp),%rax
  mov    %rax,-0x98(%rbp)
L84:
  mov    -0x90(%rbp),%rax
  mov    %rax,%rdi
  call   <EVP_MD_size@plt>
  mov    %eax,-0x54(%rbp)
  mov    -0x54(%rbp),%eax
  lea    (%rax,%rax,1),%edx
  mov    -0x58(%rbp),%eax
  sub    %edx,%eax
  cmp    %eax,-0x70(%rbp)
  jl     L41
  mov    $0x0,%eax
  jmp    L107
L41:
  mov    -0x54(%rbp),%eax
  add    %eax,%eax
  cmp    %eax,-0x58(%rbp)
  jg     L99
  mov    $0x0,%eax
  jmp    L107
L99:
  mov    -0x68(%rbp),%rax
  movb   $0x0,(%rax)
  mov    -0x68(%rbp),%rax
  add    $0x1,%rax
  mov    %rax,-0x40(%rbp)
  mov    -0x54(%rbp),%eax
  cltq
  lea    0x1(%rax),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x38(%rbp)
  mov    -0x90(%rbp),%rcx
  mov    -0x38(%rbp),%rdx
  mov    -0x84(%rbp),%esi
  mov    -0x80(%rbp),%rax
  mov    $0x0,%r9d
  mov    %rcx,%r8
  mov    $0x0,%ecx
  mov    %rax,%rdi
  call   <EVP_Digest@plt>
  test   %eax,%eax
  jne    L72
  mov    $0x0,%eax
  jmp    L107
L72:
  mov    -0x58(%rbp),%eax
  sub    -0x70(%rbp),%eax
  mov    -0x54(%rbp),%edx
  add    %edx,%edx
  sub    %edx,%eax
  lea    -0x1(%rax),%edx
  mov    -0x54(%rbp),%eax
  movslq %eax,%rcx
  mov    -0x38(%rbp),%rax
  add    %rcx,%rax
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  mov    -0x58(%rbp),%eax
  sub    -0x70(%rbp),%eax
  sub    -0x54(%rbp),%eax
  cltq
  lea    -0x1(%rax),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movb   $0x1,(%rax)
  mov    -0x70(%rbp),%edx
  mov    -0x58(%rbp),%eax
  cltq
  mov    -0x70(%rbp),%ecx
  movslq %ecx,%rsi
  sub    %rsi,%rax
  mov    %rax,%rcx
  mov    -0x54(%rbp),%eax
  cltq
  sub    %rax,%rcx
  mov    -0x38(%rbp),%rax
  add    %rax,%rcx
  mov    -0x78(%rbp),%rax
  mov    %rax,%rsi
  mov    %rcx,%rdi
  call   <memcpy@plt>
  mov    -0x54(%rbp),%edx
  mov    -0x40(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <RAND_bytes@plt>
  test   %rax,%rax
  jg     L71
  mov    $0x0,%eax
  jmp    L107
L71:
  mov    -0x58(%rbp),%eax
  sub    -0x54(%rbp),%eax
  mov    %eax,%edi
  call   <OPENSSL_malloc@plt>
  mov    %rax,-0x30(%rbp)
  cmpq   $0x0,-0x30(%rbp)
  jne    L186
  mov    $0x0,%eax
  jmp    L107
L186:
  mov    -0x58(%rbp),%eax
  sub    -0x54(%rbp),%eax
  mov    %eax,%esi
  mov    -0x98(%rbp),%rdi
  mov    -0x54(%rbp),%ecx
  mov    -0x40(%rbp),%rdx
  mov    -0x30(%rbp),%rax
  mov    %rdi,%r8
  mov    %rax,%rdi
  call   <beta_PKCS1_MGF1@plt>
  test   %rax,%rax
  jns    L90
  mov    $0x0,%eax
  jmp    L107
L90:
  movl   $0x0,-0x5c(%rbp)
  jmp    L94
L56:
  mov    -0x5c(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%ecx
  mov    -0x5c(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%edx
  mov    -0x5c(%rbp),%eax
  movslq %eax,%rsi
  mov    -0x38(%rbp),%rax
  add    %rsi,%rax
  xor    %ecx,%edx
  mov    %dl,(%rax)
  addl   $0x1,-0x5c(%rbp)
L94:
  mov    -0x58(%rbp),%eax
  sub    -0x54(%rbp),%eax
  cmp    %eax,-0x5c(%rbp)
  jl     L56
  mov    -0x58(%rbp),%eax
  sub    -0x54(%rbp),%eax
  mov    %eax,%ecx
  mov    -0x98(%rbp),%rdi
  mov    -0x38(%rbp),%rdx
  mov    -0x54(%rbp),%esi
  mov    -0x48(%rbp),%rax
  mov    %rdi,%r8
  mov    %rax,%rdi
  call   <beta_PKCS1_MGF1@plt>
  test   %rax,%rax
  jns    L180
  mov    $0x0,%eax
  jmp    L107
L180:
  movl   $0x0,-0x5c(%rbp)
  jmp    L230
L85:
  mov    -0x5c(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%ecx
  mov    -0x48(%rbp),%rdx
  mov    -0x5c(%rbp),%eax
  cltq
  movzbl (%rdx,%rax,1),%edx
  mov    -0x5c(%rbp),%eax
  movslq %eax,%rsi
  mov    -0x40(%rbp),%rax
  add    %rsi,%rax
  xor    %ecx,%edx
  mov    %dl,(%rax)
  addl   $0x1,-0x5c(%rbp)
L230:
  mov    -0x5c(%rbp),%eax
  cmp    -0x54(%rbp),%eax
  jl     L85
  mov    -0x30(%rbp),%rax
  mov    %rax,%rdi
  call   <OPENSSL_free@plt>
  mov    $0x1,%eax
L107:
  mov    %rbx,%rsp
  mov    -0x28(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L138
  call   <__stack_chk_fail@plt>
L138:
  lea    -0x18(%rbp),%rsp
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %rbp
  ret
```

assistant: ```c
int beta_RSA_padding_add_PKCS1_OAEP_mgf1(unsigned char *to, int tlen, const unsigned char *from, int flen, const unsigned char *param, int plen, const EVP_MD *md, const EVP_MD *mgf1md) {
  int i, emlen = tlen - 1;
  unsigned char *db, *seed;
  unsigned char *dbmask, seedmask[EVP_MAX_MD_SIZE];
  int mdlen;
  if (md == NULL)
    md = EVP_sha1();
  if (mgf1md == NULL)
    mgf1md = md;
  mdlen = EVP_MD_size(md);
  if (flen > emlen - 2 * mdlen - 1) {
    return 0;
  }
  if (emlen < 2 * mdlen + 1) {
    return 0;
  }
  to[0] = 0;
  seed = to + 1;
  db = to + mdlen + 1;
  if (!EVP_Digest((void *)param, plen, db, NULL, md, NULL))
    return 0;
  memset(db + mdlen, 0, emlen - flen - 2 * mdlen - 1);
  db[emlen - flen - mdlen - 1] = 0x01;
  memcpy(db + emlen - flen - mdlen, from, (unsigned int)flen);
  if (RAND_bytes(seed, mdlen) <= 0)
    return 0;
  dbmask = OPENSSL_malloc(emlen - mdlen);
  if (dbmask == NULL) {
    return 0;
  }
  if (beta_PKCS1_MGF1(dbmask, emlen - mdlen, seed, mdlen, mgf1md) < 0)
    return 0;
  for (i = 0; i < emlen - mdlen; i++)
    db[i] ^= dbmask[i];
  if (beta_PKCS1_MGF1(seedmask, mdlen, db, emlen - mdlen, mgf1md) < 0)
    return 0;
  for (i = 0; i < mdlen; i++)
    seed[i] ^= seedmask[i];
  OPENSSL_free(dbmask);
  return 1;
}
```