user: Translate the below assembly code into C programming language:

```asm
<op_STRING_DOT>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  mov    %rsi,%r12
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  call   <OP1_TYPECAST@plt>
  mov    %r12,%rdi
  mov    %rax,%rbp
  call   <OP2_TYPECAST@plt>
  cmpb   $0x0,0x0(%rbp)
  mov    %rax,%r12
  je     L190
  mov    $0x1,%eax
  nopw   0x0(%rax,%rax,1)
L159:
  movzbl 0x0(%rbp,%rax,1),%edx
  mov    %rax,%rbx
  mov    %eax,%r13d
  lea    0x1(%rbx),%rax
  test   %dl,%dl
  jne    L159
  cmpb   $0x0,(%r12)
  je     L399
L217:
  lea    0x1(%r12),%r15
  mov    %r15,%rax
  cs nopw 0x0(%rax,%rax,1)
L215:
  movzbl (%rax),%edx
  mov    %eax,%r14d
  add    $0x1,%rax
  sub    %r12d,%r14d
  test   %dl,%dl
  jne    L215
  lea    0x0(%r13,%r14,1),%ebx
  lea    0x1(%rbx),%edi
  movslq %ebx,%rbx
  call   <alloc@plt>
  mov    %rax,%r8
  test   %r13d,%r13d
  je     L146
L407:
  lea    0x1(%rbp),%rdx
  mov    %r8,%rax
  sub    %rdx,%rax
  cmp    $0xe,%rax
  jbe    L221
  cmp    $0x7,%r13d
  jle    L221
  test   %r13d,%r13d
  mov    $0x1,%eax
  cmovg  %r13d,%eax
  mov    %eax,%edx
  cmp    $0xf,%r13d
  jle    L124
  shr    $0x4,%eax
  mov    %r8,%rcx
  sub    $0x1,%eax
  sub    %rbp,%rcx
  shl    $0x4,%rax
  lea    0x10(%rbp,%rax,1),%rsi
  mov    %rbp,%rax
  nopl   0x0(%rax,%rax,1)
L242:
  movdqu (%rax),%xmm1
  movups %xmm1,(%rcx,%rax,1)
  add    $0x10,%rax
  cmp    %rsi,%rax
  jne    L242
  mov    %edx,%esi
  and    $0xfffffff0,%esi
  mov    %esi,%ecx
  cmp    %esi,%edx
  je     L360
L394:
  mov    %edx,%eax
  sub    %esi,%eax
  lea    -0x1(%rax),%edx
  cmp    $0x6,%edx
  jbe    L400
  mov    0x0(%rbp,%rsi,1),%rdx
  mov    %rdx,(%r8,%rsi,1)
  mov    %eax,%edx
  and    $0xfffffff8,%edx
  add    %edx,%ecx
  cmp    %edx,%eax
  je     L360
L400:
  movslq %ecx,%rax
  movzbl 0x0(%rbp,%rax,1),%edx
  mov    %dl,(%r8,%rax,1)
  lea    0x1(%rcx),%eax
  cmp    %eax,%r13d
  jle    L360
  cltq
  movzbl 0x0(%rbp,%rax,1),%edx
  mov    %dl,(%r8,%rax,1)
  lea    0x2(%rcx),%eax
  cmp    %eax,%r13d
  jle    L360
  cltq
  movzbl 0x0(%rbp,%rax,1),%edx
  mov    %dl,(%r8,%rax,1)
  lea    0x3(%rcx),%eax
  cmp    %eax,%r13d
  jle    L360
  cltq
  movzbl 0x0(%rbp,%rax,1),%edx
  mov    %dl,(%r8,%rax,1)
  lea    0x4(%rcx),%eax
  cmp    %eax,%r13d
  jle    L360
  cltq
  movzbl 0x0(%rbp,%rax,1),%edx
  mov    %dl,(%r8,%rax,1)
  lea    0x5(%rcx),%eax
  cmp    %eax,%r13d
  jle    L360
  cltq
  add    $0x6,%ecx
  movzbl 0x0(%rbp,%rax,1),%edx
  mov    %dl,(%r8,%rax,1)
  cmp    %ecx,%r13d
  jle    L360
  movslq %ecx,%rcx
  movzbl 0x0(%rbp,%rcx,1),%eax
  mov    %al,(%r8,%rcx,1)
L360:
  lea    0x1(%r12),%r15
  test   %r14d,%r14d
  je     L54
L146:
  movslq %r13d,%rsi
  add    %r8,%rsi
  mov    %rsi,%rax
  sub    %r15,%rax
  cmp    $0xe,%rax
  jbe    L13
  cmp    $0x7,%r14d
  jle    L13
  test   %r14d,%r14d
  mov    $0x1,%edx
  cmovg  %r14d,%edx
  cmp    $0xf,%r14d
  jle    L28
  mov    %edx,%eax
  mov    %rsi,%rcx
  shr    $0x4,%eax
  sub    %r12,%rcx
  sub    $0x1,%eax
  shl    $0x4,%rax
  lea    0x10(%r12,%rax,1),%rdi
  mov    %r12,%rax
  nopl   (%rax)
L272:
  movdqu (%rax),%xmm0
  movups %xmm0,(%rcx,%rax,1)
  add    $0x10,%rax
  cmp    %rax,%rdi
  jne    L272
  mov    %edx,%ecx
  and    $0xfffffff0,%ecx
  mov    %ecx,%eax
  cmp    %ecx,%edx
  je     L54
L240:
  sub    %ecx,%edx
  lea    -0x1(%rdx),%edi
  cmp    $0x6,%edi
  jbe    L320
  mov    (%r12,%rcx,1),%rdi
  mov    %rdi,(%rsi,%rcx,1)
  mov    %edx,%ecx
  and    $0xfffffff8,%ecx
  add    %ecx,%eax
  cmp    %ecx,%edx
  je     L54
L320:
  movslq %eax,%rdx
  movzbl (%r12,%rdx,1),%ecx
  lea    0x0(%r13,%rax,1),%edx
  movslq %edx,%rdx
  mov    %cl,(%r8,%rdx,1)
  lea    0x1(%rax),%edx
  cmp    %r14d,%edx
  jge    L54
  movslq %edx,%rcx
  add    %r13d,%edx
  movzbl (%r12,%rcx,1),%ecx
  movslq %edx,%rdx
  mov    %cl,(%r8,%rdx,1)
  lea    0x2(%rax),%edx
  cmp    %r14d,%edx
  jge    L54
  movslq %edx,%rcx
  add    %r13d,%edx
  movzbl (%r12,%rcx,1),%ecx
  movslq %edx,%rdx
  mov    %cl,(%r8,%rdx,1)
  lea    0x3(%rax),%edx
  cmp    %edx,%r14d
  jle    L54
  movslq %edx,%rcx
  add    %r13d,%edx
  movzbl (%r12,%rcx,1),%ecx
  movslq %edx,%rdx
  mov    %cl,(%r8,%rdx,1)
  lea    0x4(%rax),%edx
  cmp    %r14d,%edx
  jge    L54
  movslq %edx,%rcx
  add    %r13d,%edx
  movzbl (%r12,%rcx,1),%ecx
  movslq %edx,%rdx
  mov    %cl,(%r8,%rdx,1)
  lea    0x5(%rax),%edx
  cmp    %edx,%r14d
  jle    L54
  movslq %edx,%rcx
  add    %r13d,%edx
  add    $0x6,%eax
  movzbl (%r12,%rcx,1),%ecx
  movslq %edx,%rdx
  mov    %cl,(%r8,%rdx,1)
  cmp    %eax,%r14d
  jle    L54
  movslq %eax,%rdx
  add    %r13d,%eax
  movzbl (%r12,%rdx,1),%edx
  cltq
  mov    %dl,(%r8,%rax,1)
L54:
  add    %r8,%rbx
L303:
  movb   $0x0,(%rbx)
  add    $0x8,%rsp
  mov    %r8,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   0x0(%rax)
L13:
  xor    %eax,%eax
  nopw   0x0(%rax,%rax,1)
L154:
  movzbl (%r12,%rax,1),%edx
  mov    %dl,(%rsi,%rax,1)
  add    $0x1,%rax
  cmp    %eax,%r14d
  jg     L154
  jmp    L54
  nopl   0x0(%rax,%rax,1)
L221:
  xor    %eax,%eax
  nopw   0x0(%rax,%rax,1)
L115:
  movzbl (%rax,%rbp,1),%edx
  mov    %dl,(%r8,%rax,1)
  add    $0x1,%rax
  cmp    %eax,%r13d
  jg     L115
  jmp    L360
  xchg   %ax,%ax
L190:
  xor    %r13d,%r13d
  cmpb   $0x0,(%rax)
  jne    L217
  mov    $0x1,%edi
  call   <alloc@plt>
  mov    %rax,%r8
  mov    %rax,%rbx
  jmp    L303
  xchg   %ax,%ax
L399:
  lea    0x1(%r13),%edi
  xor    %r14d,%r14d
  call   <alloc@plt>
  mov    %rax,%r8
  jmp    L407
L124:
  xor    %esi,%esi
  xor    %ecx,%ecx
  jmp    L394
L28:
  xor    %ecx,%ecx
  xor    %eax,%eax
  jmp    L240
```

assistant: ```c
void *op_STRING_DOT(void *inpString1, void *inpString2) {
  char *s1 = (char *)OP1_TYPECAST(inpString1);
  char *s2 = (char *)OP2_TYPECAST(inpString2);
  int len1 = 0, len2 = 0;
  for (len1 = 0; s1[len1]; len1++)
    ;
  for (len2 = 0; s2[len2]; len2++)
    ;
  char *s3 = (char *)alloc(sizeof(char) * (len1 + len2 + 1));
  int i;
  for (i = 0; i < len1; i++) {
    s3[i] = s1[i];
  }
  for (i = 0; i < len2; i++) {
    s3[len1 + i] = s2[i];
  }
  s3[len1 + len2] = '\0';
  return (void *)s3;
}
```