user: 请将以下的汇编代码转换成C语言代码:

```asm
<b64Decode>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x168,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x158(%rsp)
  xor    %eax,%eax
  movl   $0x0,0xc(%rsp)
  movq   $0x0,0xb0(%rsp)
  movq   $0x0,0xb8(%rsp)
  movq   $0x0,0xc0(%rsp)
  movq   $0x0,0xc8(%rsp)
  movq   $0x0,0xd0(%rsp)
  movq   $0x0,0xd8(%rsp)
  movq   $0x0,0xe0(%rsp)
  movq   $0x0,0xe8(%rsp)
  movq   $0x0,0xf0(%rsp)
  movq   $0x0,0xf8(%rsp)
  movq   $0x0,0x100(%rsp)
  movq   $0x0,0x108(%rsp)
  movq   $0x0,0x110(%rsp)
  movq   $0x0,0x118(%rsp)
  movq   $0x0,0x120(%rsp)
  movq   $0x0,0x128(%rsp)
  movq   $0x0,0x130(%rsp)
  movq   $0x0,0x138(%rsp)
  movq   $0x0,0x140(%rsp)
  movq   $0x0,0x148(%rsp)
  movb   $0x0,0x150(%rsp)
  lea    D7(%rip),%rdi
  call   <puts@plt>
  lea    0x10(%rsp),%rdi
  mov    $0xa0,%esi
  call   <getCode@plt>
  mov    $0x1,%ebp
  lea    0xb0(%rsp),%r14
  lea    0xf(%rsp),%r13
  cmpb   $0x0,0x10(%rsp)
  jne    L71
  jmp    L64
L104:
  add    $0x1,%rbp
L71:
  mov    %ebp,%r12d
  lea    -0x1(%rbp),%ebx
  movsbl 0x0(%r13,%rbp,1),%r15d
  mov    %r15d,%edi
  call   <isupper@plt>
  test   %rax,%rax
  je     L105
  sub    $0x41,%r15d
L27:
  mov    %ebx,%eax
  sar    $0x1f,%eax
  shr    $0x1e,%eax
  add    %eax,%ebx
  and    $0x3,%ebx
  sub    %ebx,%eax
  lea    0x9(%rax,%rax,2),%ecx
  add    %ecx,%ecx
  shl    %cl,%r15d
  or     %r15d,0xc(%rsp)
  mov    %ebp,%ebx
  cmpb   $0x0,0x10(%rsp,%rbp,1)
  je     L45
  test   $0x3,%r12b
  jne    L104
  test   %ebp,%ebp
  je     L104
  lea    0xc(%rsp),%rsi
  mov    $0x3,%edx
  mov    %r14,%rdi
  call   <copy@plt>
  add    $0x3,%r14
  movl   $0x0,0xc(%rsp)
  jmp    L104
L105:
  mov    %r15d,%edi
  call   <islower@plt>
  test   %rax,%rax
  je     L31
  sub    $0x47,%r15d
  jmp    L27
L31:
  mov    %r15d,%edi
  call   <isdigit@plt>
  test   %rax,%rax
  je     L133
  add    $0x4,%r15d
  jmp    L27
L133:
  cmp    $0x3d,%r15d
  je     L45
  add    $0x13,%r15d
  mov    $0x3f,%eax
  cmp    %eax,%r15d
  cmovg  %eax,%r15d
  jmp    L27
L45:
  test   $0x3,%bl
  jne    L110
L64:
  lea    0xb0(%rsp),%rsi
  lea    D16(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    0x158(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L62
  add    $0x168,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L110:
  mov    %ebx,%eax
  sar    $0x1f,%eax
  shr    $0x1e,%eax
  add    %eax,%ebx
  and    $0x3,%ebx
  sub    %eax,%ebx
  mov    $0x4,%ecx
  sub    %ebx,%ecx
  shl    $0x3,%ecx
  sarl   %cl,0xc(%rsp)
  lea    -0x1(%rbx),%edx
  lea    0xc(%rsp),%rsi
  mov    %r14,%rdi
  call   <copy@plt>
  jmp    L64
L62:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: parse_data
arguments: tag: D7
datatype: string
name: parse_data
arguments: tag: D16
datatype: string

tool: D7: So give me some data

tool: D16: %s

assistant: ```c
void b64Decode(void) {
  int ch;
  int i, tmp = 0, flag = 1;
  char BaseCode[0xa0];
  char SourceCode[0xa0 + 1] = {0};
  char *pToSource = SourceCode;
  printf("So give me some data\n");
  getCode(BaseCode, 0xa0);
  for (i = 0; BaseCode[i]; i++) {
    if ((!(i % 4)) && i) {
      copy(pToSource, (char *)&tmp, 3);
      pToSource += 3;
      tmp = 0;
    }
    ch = BaseCode[i];
    if (isupper(ch)) {
      ch -= 'A';
    } else if (islower(ch)) {
      ch -= 'a' - 26;
    } else if (isdigit(ch)) {
      ch -= '0' - 52;
    } else if (ch - 61) {
      ch -= '+' - 62;
      if (ch > 63) {
        ch = 63;
      }
    } else {
      break;
    }
    tmp = tmp | (ch << (6 * (3 - i % 4)));
  }
  if (i % 4) {
    tmp = tmp >> ((4 - i % 4) * 8);
    copy(pToSource, (char *)&tmp, (i % 4) - 1);
  }
  printf("%s", SourceCode);
}
```