user: 下面的汇编指令对应的C源代码是什么:

```asm
<main>:
  endbr64
  push   %r15
  lea    D40(%rip),%rdi
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  lea    D48(%rip),%rbp
  push   %rbx
  sub    $0xcc8,%rsp
  movdqa D58(%rip),%xmm0
  mov    %fs:0x28,%rax
  mov    %rax,0xcb8(%rsp)
  xor    %eax,%eax
  movb   $0x0,0x4dc(%rsp)
  movabs $0x5756555453525150,%rax
  lea    0x4c0(%rsp),%rbx
  movaps %xmm0,0x4c0(%rsp)
  mov    %rax,0x4d0(%rsp)
  movl   $0x2a5a5958,0x4d8(%rsp)
  call   <puts@plt>
  mov    %rbp,%rdi
  lea    0x8(%rsp),%rsi
  xor    %eax,%eax
  call   <scanf@plt>
  lea    0xc(%rsp),%rsi
  mov    %rbp,%rdi
  xor    %eax,%eax
  call   <scanf@plt>
  lea    0x4e0(%rsp),%rbp
  lea    D31(%rip),%rdi
  call   <puts@plt>
  mov    %rbp,%rsi
  lea    D25(%rip),%rdi
  xor    %eax,%eax
  call   <scanf@plt>
  lea    0x10(%rsp),%rax
L84:
  movl   $0x0,(%rax)
  add    $0xc,%rax
  movl   $0x0,-0x8(%rax)
  cmp    %rbx,%rax
  jne    L84
  movslq 0x8(%rsp),%rax
  movl   $0x1c,0x1c(%rsp)
  mov    %rax,%r9
  imul   $0xffffffff92492493,%rax,%rax
  mov    %r9d,%edx
  sar    $0x1f,%edx
  shr    $0x20,%rax
  add    %r9d,%eax
  sar    $0x4,%eax
  mov    %eax,%esi
  sub    %edx,%eax
  sub    %edx,%esi
  imul   0x20(%rsp),%eax
  mov    $0x1,%edx
  imul   $0x1c,%esi,%ecx
  mov    %r9d,%esi
  sub    %eax,%edx
  sub    %ecx,%esi
  mov    %edx,0x2c(%rsp)
  mov    %esi,0x28(%rsp)
  test   %esi,%esi
  je     L74
  lea    0x20(%rsp),%rcx
  mov    $0x1c,%eax
  mov    $0x2,%edi
  jmp    L85
  nopl   0x0(%rax,%rax,1)
L109:
  mov    -0x4(%rcx),%eax
  mov    0x8(%rcx),%esi
  movslq %r8d,%rdi
L85:
  cltd
  lea    0x1(%rdi),%r8d
  add    $0xc,%rcx
  idiv   %esi
  mov    -0xc(%rcx),%esi
  imul   (%rcx),%eax
  sub    %eax,%esi
  mov    %edx,0x8(%rcx)
  mov    %esi,0xc(%rcx)
  test   %edx,%edx
  jne    L109
L4:
  lea    (%rdi,%rdi,2),%rax
  mov    %r9d,%esi
  lea    D49(%rip),%rdi
  movslq 0x14(%rsp,%rax,4),%r13
  xor    %eax,%eax
  lea    0x8d0(%rsp),%r14
  mov    %r13d,%edx
  mov    %r13,%r12
  call   <printf@plt>
  mov    0x8(%rsp),%esi
  mov    %r13d,%ecx
  mov    %r13d,%edx
  imul   $0xffffffff92492493,%r13,%r13
  lea    D56(%rip),%rdi
  xor    %eax,%eax
  imul   %esi,%ecx
  shr    $0x20,%r13
  call   <printf@plt>
  add    %r12d,%r13d
  mov    %r12d,%eax
  mov    %rbp,%rdi
  sar    $0x1f,%eax
  sar    $0x4,%r13d
  sub    %eax,%r13d
  imul   $0x1c,%r13d,%eax
  mov    %r12d,%r13d
  xor    %r12d,%r12d
  movslq %r12d,%r15
  sub    %eax,%r13d
  call   <strlen@plt>
  cmp    %r12d,%eax
  jle    L79
  nopl   (%rax)
L76:
  movzbl 0x0(%rbp,%r12,1),%esi
  xor    %eax,%eax
  cmp    $0x41,%sil
  je     L106
  mov    $0x1,%edx
  mov    $0x42,%ecx
  mov    %edx,%eax
  add    $0x1,%rdx
  cmp    %cl,%sil
  je     L106
  nopl   0x0(%rax,%rax,1)
L10:
  movzbl (%rbx,%rdx,1),%ecx
  mov    %edx,%eax
  add    $0x1,%rdx
  cmp    %cl,%sil
  jne    L10
L106:
  sub    0xc(%rsp),%eax
  mov    %rbp,%rdi
  imul   %r13d,%eax
  add    $0xaf0,%eax
  movslq %eax,%rdx
  mov    %eax,%ecx
  imul   $0xffffffff92492493,%rdx,%rdx
  sar    $0x1f,%ecx
  shr    $0x20,%rdx
  add    %eax,%edx
  sar    $0x4,%edx
  sub    %ecx,%edx
  imul   $0x1c,%edx,%edx
  sub    %edx,%eax
  cltq
  movzbl 0x4c0(%rsp,%rax,1),%eax
  mov    %al,(%r14,%r12,1)
  add    $0x1,%r12
  movslq %r12d,%r15
  call   <strlen@plt>
  cmp    %r12d,%eax
  jg     L76
L79:
  mov    %r14,%rsi
  lea    D47(%rip),%rdi
  xor    %eax,%eax
  movb   $0x0,0x8d0(%rsp,%r15,1)
  call   <printf@plt>
  xor    %eax,%eax
  call   <getchar@plt>
  xor    %eax,%eax
  call   <getchar@plt>
  mov    0xcb8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L72
  add    $0xcc8,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L74:
  mov    $0x1,%edi
  jmp    L4
L72:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: retrieve_data
arguments: tag: D40
type: string
name: retrieve_data
arguments: tag: D48
type: string
name: retrieve_data
arguments: tag: D58
type: byte[16]
name: retrieve_data
arguments: tag: D31
type: string
name: retrieve_data
arguments: tag: D25
type: string
name: retrieve_data
arguments: tag: D49
type: string
name: retrieve_data
arguments: tag: D56
type: string
name: retrieve_data
arguments: tag: D47
type: string

tool: D40: Introduce los dos numeros del criptosistema afin: 

tool: D48: %d

tool: {"D58": [0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4a,0x4b,0x4c,0x4d,0x4e,0x6e,0x4f]}

tool: D31: Introduce el mensaje a decodificar: 

tool: D25: %s

tool: D49: El inverso de %d modulo 28 es %d


tool: D56: Comprobamos: %d * %d = %d


tool: D47: Mensaje decodificado: 
%s

assistant: ```c
int main(void) {
  int a, b;
  int a_inv;
  int D;
  char clave[] = "ABCDEFGHIJKLMNnOPQRSTUVWXYZ*";
  char mensaje[1000];
  char decodificado[1000];
  int codif;
  int matriz[100][3];
  int i = 2;
  int cociente;
  int j, k;
  printf("Introduce los dos numeros del criptosistema afin: \n");
  scanf("%d", &a);
  scanf("%d", &b);
  printf("Introduce el mensaje a decodificar: \n");
  scanf("%s", mensaje);
  for (j = 0; j < 100; j++) {
    for (k = 0; k < 3; k++) {
      matriz[j][k] = 0;
    }
  }
  matriz[0][1] = 1;
  matriz[1][2] = 1;
  matriz[0][0] = a;
  matriz[1][0] = 28;
  while (1) {
    cociente = (matriz[i - 2][0] / matriz[i - 1][0]);
    matriz[i][0] = (matriz[i - 2][0] % matriz[i - 1][0]);
    matriz[i][1] = (matriz[i - 2][1] - (cociente * matriz[i - 1][1]));
    matriz[i][2] = (matriz[i - 2][2] - (cociente * matriz[i - 1][2]));
    if (matriz[i][0] == 0)
      break;
    i++;
  }
  printf("El inverso de %d modulo 28 es %d\n", a, matriz[i - 1][1]);
  printf("Comprobamos: %d * %d = %d\n", a, matriz[i - 1][1], matriz[i - 1][1] * a);
  a_inv = (matriz[i - 1][1] % 28);
  for (i = 0; i < strlen(mensaje); i++) {
    codif = 0;
    j = 0;
    while (codif == 0) {
      if (mensaje[i] == clave[j]) {
        decodificado[i] = clave[((a_inv * (j - b)) + 2800) % 28];
        codif = 1;
      }
      j++;
    }
  }
  decodificado[i] = '\0';
  printf("Mensaje decodificado: \n%s", decodificado);
  getchar();
  getchar();
}
```