user: 下面的汇编指令对应的C源代码是什么：

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbx
  sub    $0x48,%rsp
  mov    %edi,-0x64(%rbp)
  mov    %rsi,-0x70(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x38(%rbp)
  xor    %eax,%eax
  mov    %rsp,%rax
  mov    %rax,%rbx
  cmpl   $0x1,-0x64(%rbp)
  jg     L31
  lea    D35(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  mov    $0xffffffff,%edi
  call   <exit@plt>
L31:
  mov    -0x70(%rbp),%rax
  mov    0x8(%rax),%rax
  mov    %rax,-0x58(%rbp)
  mov    -0x58(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  mov    %eax,-0x5c(%rbp)
  mov    -0x5c(%rbp),%eax
  movslq %eax,%rdx
  sub    $0x1,%rdx
  mov    %rdx,-0x50(%rbp)
  movslq %eax,%rdx
  mov    %rdx,%r14
  mov    $0x0,%r15d
  movslq %eax,%rdx
  mov    %rdx,%r12
  mov    $0x0,%r13d
  cltq
  mov    $0x10,%edx
  sub    $0x1,%rdx
  add    %rdx,%rax
  mov    $0x10,%ecx
  mov    $0x0,%edx
  div    %rcx
  imul   $0x10,%rax,%rax
  mov    %rax,%rcx
  and    $0xfffffffffffff000,%rcx
  mov    %rsp,%rdx
  sub    %rcx,%rdx
L47:
  cmp    %rdx,%rsp
  je     L67
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L47
L67:
  mov    %rax,%rdx
  and    $0xfff,%edx
  sub    %rdx,%rsp
  mov    %rax,%rdx
  and    $0xfff,%edx
  test   %rdx,%rdx
  je     L10
  and    $0xfff,%eax
  sub    $0x8,%rax
  add    %rsp,%rax
  orq    $0x0,(%rax)
L10:
  mov    %rsp,%rax
  add    $0x0,%rax
  mov    %rax,-0x48(%rbp)
  mov    -0x5c(%rbp),%edx
  mov    -0x48(%rbp),%rax
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  mov    -0x5c(%rbp),%eax
  mov    %eax,-0x60(%rbp)
  jmp    L39
L9:
  mov    -0x60(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x58(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  mov    %eax,%esi
  lea    D13(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x2,%edi
  call   <malloc@plt>
  mov    %rax,-0x40(%rbp)
  mov    -0x60(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x58(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%edx
  mov    -0x40(%rbp),%rax
  mov    %dl,(%rax)
  mov    -0x40(%rbp),%rax
  add    $0x1,%rax
  movb   $0x0,(%rax)
  mov    -0x40(%rbp),%rdx
  mov    -0x48(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcat@plt>
  subl   $0x1,-0x60(%rbp)
L39:
  cmpl   $0x0,-0x60(%rbp)
  jns    L9
  mov    -0x58(%rbp),%rax
  mov    %rax,%rsi
  lea    D7(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    -0x48(%rbp),%rax
  mov    %rax,%rsi
  lea    D5(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x0,%eax
  mov    %rbx,%rsp
  mov    -0x38(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L0
  call   <__stack_chk_fail@plt>
L0:
  lea    -0x28(%rbp),%rsp
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  pop    %rbp
  ret
```

tool_calls: name: disassemble_data
arguments: label: D35
type_guessed: string
name: disassemble_data
arguments: label: D13
type_guessed: string
name: disassemble_data
arguments: label: D7
type_guessed: string
name: disassemble_data
arguments: label: D5
type_guessed: string

tool: D35: ERROR: Run as ./a.out <stringToReverse>

tool: D13: Char = %c


tool: D7: Orig     : %s


tool: D5: Reverse  : %s


assistant: ```c
int main(int argc, char **argv) {
  if (argc < 2) {
    printf("ERROR: Run as ./a.out <stringToReverse>\n");
    exit(-1);
  }
  char *orig = argv[1];
  int size = strlen(orig);
  char reverse[size];
  memset(reverse, 0, size);
  int i = size;
  while (i >= 0) {
    printf("Char = %c\n", orig[i]);
    char *tmp = malloc(2);
    tmp[0] = orig[i];
    tmp[1] = '\0';
    strcat(reverse, tmp);
    i = i - 1;
  }
  printf("Orig     : %s\n", orig);
  printf("Reverse  : %s\n", reverse);
  return 0;
}
```