user: What would the C source look like for the assembly code provided here?

```asm
<_error_hint>:
  endbr64
  push   %r14
  push   %r13
  push   %r12
  mov    %rdx,%r12
  push   %rbp
  mov    %rsi,%rbp
  push   %rbx
  sub    $0x20,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  lea    0x8(%rsp),%rdi
  movl   $0x0,0x14(%rsp)
  call   <uname@plt>
  test   %rax,%rax
  je     L183
L14:
  lea    D49(%rip),%r13
L151:
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L33
  add    $0x20,%rsp
  mov    %r13,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
  nopl   0x0(%rax,%rax,1)
L183:
  mov    0x8(%rsp),%rdi
  mov    $0x4,%edx
  lea    D50(%rip),%rsi
  call   <strncmp@plt>
  test   %rax,%rax
  jne    L14
  mov    $0x4,%ebx
  lea    0x10(%rsp),%r14
L71:
  mov    0x8(%rsp),%rax
  movzbl (%rax,%rbx,1),%r13d
  test   %r13b,%r13b
  je     L153
  movsbl %r13b,%edi
  call   <isdigit@plt>
  test   %rax,%rax
  je     L175
  mov    %r13b,(%r14,%rbx,1)
  add    $0x1,%rbx
  cmp    $0x7,%rbx
  jne    L71
L153:
  lea    0x14(%rsp),%rdi
  lea    D16(%rip),%r13
  call   <atoi@plt>
  mov    $0x3,%edx
  mov    %r13,%rsi
  mov    %rbp,%rdi
  mov    %eax,%ebx
  call   <strncmp@plt>
  test   %rax,%rax
  jne    L169
  lea    -0x100(%r12),%rax
  test   $0xfffffffffffffeff,%rax
  je     L169
  lea    D2(%rip),%r14
  mov    $0x3,%edx
  mov    %rbp,%rdi
  mov    %r14,%rsi
  lea    D47(%rip),%r13
  call   <strncmp@plt>
  test   %rax,%rax
  jne    L92
L44:
  lea    D36(%rip),%r13
  jmp    L151
  nopl   0x0(%rax,%rax,1)
L169:
  mov    $0x3,%edx
  mov    %r13,%rsi
  mov    %rbp,%rdi
  call   <strncmp@plt>
  cmp    $0x17,%ebx
  jg     L23
  lea    D91(%rip),%r13
  test   %rax,%rax
  jne    L23
L41:
  lea    D2(%rip),%r14
  mov    $0x3,%edx
  mov    %rbp,%rdi
  mov    %r14,%rsi
  call   <strncmp@plt>
  test   %rax,%rax
  jne    L92
  sub    $0x100,%r12
  test   $0xfffffffffffffeff,%r12
  jne    L44
L92:
  mov    $0x3,%edx
  mov    %r14,%rsi
  mov    %rbp,%rdi
  call   <strncmp@plt>
  test   %rax,%rax
  jne    L151
  cmp    $0x13,%ebx
  lea    D80(%rip),%rax
  cmovle %rax,%r13
  jmp    L151
  nopl   (%rax)
L175:
  movb   $0x0,(%r14,%rbx,1)
  add    $0x1,%rbx
  cmp    $0x7,%rbx
  jne    L71
  jmp    L153
  nopl   0x0(%rax,%rax,1)
L23:
  lea    D49(%rip),%r13
  jmp    L41
L33:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: read_data
arguments: data_tag: D49
type: string
name: read_data
arguments: data_tag: D50
type: string
name: read_data
arguments: data_tag: D16
type: string
name: read_data
arguments: data_tag: D2
type: string
name: read_data
arguments: data_tag: D47
type: string
name: read_data
arguments: data_tag: D36
type: string
name: read_data
arguments: data_tag: D91
type: string
name: read_data
arguments: data_tag: D80
type: string

tool: 

tool: D50: 2.6.

tool: D16: xts

tool: D2: lrw

tool: D47: Key size in XTS mode must be 256 or 512 bits.


tool: D36: Key size in LRW mode must be 256 or 512 bits.


tool: D91: Block mode XTS is available since kernel 2.6.24.


tool: D80: Block mode LRW is available since kernel 2.6.20.


assistant: ```c
char *_error_hint(char *cipherName, char *cipherMode, size_t keyLength) {
  char *hint = "";
  char c, tmp[4] = {0};
  struct utsname uts;
  int i = 0, kernel_minor;
  if (uname(&uts) || strncmp(uts.release, "2.6.", 4))
    return hint;
  while (i < 3 && (c = uts.release[i + 4]))
    tmp[i++] = isdigit(c) ? c : '\0';
  kernel_minor = atoi(tmp);
  if (!strncmp(cipherMode, "xts", 3) && (keyLength != 256 && keyLength != 512))
    hint = ("Key size in XTS mode must be 256 or 512 bits.\n");
  else if (!strncmp(cipherMode, "xts", 3) && kernel_minor < 24)
    hint = ("Block mode XTS is available since kernel 2.6.24.\n");
  if (!strncmp(cipherMode, "lrw", 3) && (keyLength != 256 && keyLength != 512))
    hint = ("Key size in LRW mode must be 256 or 512 bits.\n");
  else if (!strncmp(cipherMode, "lrw", 3) && kernel_minor < 20)
    hint = ("Block mode LRW is available since kernel 2.6.20.\n");
  return hint;
}
```