ylfeng/ReF-Decompile-dataset huggingface dataset:
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<main>:
  endbr64
  push   %r13
  push   %r12
  lea    D16(%rip),%r12
  push   %rbp
  lea    D18(%rip),%rbp
  push   %rbx
  mov    $0x3e9,%ebx
  sub    $0x3f8,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x3e8(%rsp)
  xor    %eax,%eax
  mov    %rsp,%r13
  nopw   0x0(%rax,%rax,1)
L60:
  mov    %r13,%rsi
  mov    %r12,%rdi
  call   <scanf@plt>
  cmpb   $0x53,(%rsp)
  je     L86
L50:
  mov    %r13,%rax
  lea    0x3e8(%rsp),%rsi
  nopl   0x0(%rax)
L61:
  movzbl (%rax),%edx
  lea    -0x61(%rdx),%ecx
  cmp    $0x19,%cl
  ja     L18
  sub    $0x20,%edx
  mov    %dl,(%rax)
L18:
  add    $0x1,%rax
  cmp    %rsi,%rax
  jne    L61
  mov    %r13,%rsi
  mov    %rbp,%rdi
  call   <printf@plt>
  sub    $0x1,%ebx
  jne    L60
L56:
  mov    0x3e8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L79
  add    $0x3f8,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L86:
  cmpb   $0x54,0x1(%rsp)
  jne    L50
  cmpb   $0x4f,0x2(%rsp)
  jne    L50
  cmpb   $0x50,0x3(%rsp)
  jne    L50
  jmp    L56
L79:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: extract_symbolic_data
arguments: data_tag: D16
type_guessed: string
name: extract_symbolic_data
arguments: data_tag: D18
type_guessed: string

tool: D16: %s

tool: D18: %s


assistant: ```c
int main() {
  char masiv[1000];
  int i;
  for (i = 0; i <= 1000; i++) {
    scanf("%s", masiv);
    if (masiv[0] == 'S' && masiv[1] == 'T' && masiv[2] == 'O' && masiv[3] == 'P') {
      break;
    } else {
      int someword;
      for (someword = 0; someword < 1000; someword++) {
        if (masiv[someword] >= 'a' && masiv[someword] <= 'z') {
          masiv[someword] -= 32;
        }
      }
      printf("%s\n", masiv);
    }
  }
  return 0;
}
```
user: 请从给定的汇编指令推导出C源代码:

```asm
<lsame_>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x18(%rbp)
  mov    %rsi,-0x20(%rbp)
  mov    -0x18(%rbp),%rax
  movzbl (%rax),%edx
  mov    -0x20(%rbp),%rax
  movzbl (%rax),%eax
  cmp    %al,%dl
  sete   %al
  movzbl %al,%eax
  mov    %eax,-0x8(%rbp)
  cmpl   $0x0,-0x8(%rbp)
  je     L300
  mov    -0x8(%rbp),%eax
  jmp    L181
L300:
  movl   $0x5a,-0x4(%rbp)
  mov    -0x18(%rbp),%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  mov    %eax,-0x10(%rbp)
  mov    -0x20(%rbp),%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  mov    %eax,-0xc(%rbp)
  cmpl   $0x5a,-0x4(%rbp)
  je     L140
  cmpl   $0x7a,-0x4(%rbp)
  jne    L304
L140:
  cmpl   $0x60,-0x10(%rbp)
  jle    L267
  cmpl   $0x7a,-0x10(%rbp)
  jg     L267
  subl   $0x20,-0x10(%rbp)
L267:
  cmpl   $0x60,-0xc(%rbp)
  jle    L205
  cmpl   $0x7a,-0xc(%rbp)
  jg     L205
  subl   $0x20,-0xc(%rbp)
  jmp    L205
L304:
  cmpl   $0xe9,-0x4(%rbp)
  je     L185
  cmpl   $0xa9,-0x4(%rbp)
  jne    L65
L185:
  cmpl   $0x80,-0x10(%rbp)
  jle    L310
  cmpl   $0x89,-0x10(%rbp)
  jle    L155
L310:
  cmpl   $0x90,-0x10(%rbp)
  jle    L318
  cmpl   $0x99,-0x10(%rbp)
  jle    L155
L318:
  cmpl   $0xa1,-0x10(%rbp)
  jle    L305
  cmpl   $0xa9,-0x10(%rbp)
  jg     L305
L155:
  addl   $0x40,-0x10(%rbp)
L305:
  cmpl   $0x80,-0xc(%rbp)
  jle    L2
  cmpl   $0x89,-0xc(%rbp)
  jle    L60
L2:
  cmpl   $0x90,-0xc(%rbp)
  jle    L127
  cmpl   $0x99,-0xc(%rbp)
  jle    L60
L127:
  cmpl   $0xa1,-0xc(%rbp)
  jle    L18
  cmpl   $0xa9,-0xc(%rbp)
  jg     L18
L60:
  addl   $0x40,-0xc(%rbp)
  jmp    L18
L65:
  cmpl   $0xda,-0x4(%rbp)
  je     L5
  cmpl   $0xfa,-0x4(%rbp)
  jne    L103
L5:
  cmpl   $0xe0,-0x10(%rbp)
  jle    L231
  cmpl   $0xfa,-0x10(%rbp)
  jg     L231
  subl   $0x20,-0x10(%rbp)
L231:
  cmpl   $0xe0,-0xc(%rbp)
  jle    L103
  cmpl   $0xfa,-0xc(%rbp)
  jg     L103
  subl   $0x20,-0xc(%rbp)
  jmp    L103
L205:
  nop
  jmp    L103
L18:
  nop
L103:
  mov    -0x10(%rbp),%eax
  cmp    -0xc(%rbp),%eax
  sete   %al
  movzbl %al,%eax
  mov    %eax,-0x8(%rbp)
  mov    -0x8(%rbp),%eax
L181:
  pop    %rbp
  ret
```

assistant: ```c
int lsame_(char *ca, char *cb) {
  int ret_val;
  int inta, intb, zcode;
  ret_val = *(unsigned char *)ca == *(unsigned char *)cb;
  if (ret_val) {
    return ret_val;
  }
  zcode = 'Z';
  inta = *(unsigned char *)ca;
  intb = *(unsigned char *)cb;
  if (zcode == 90 || zcode == 122) {
    if (inta >= 97 && inta <= 122)
      inta += -32;
    if (intb >= 97 && intb <= 122)
      intb += -32;
  } else if (zcode == 233 || zcode == 169) {
    if (inta >= 129 && inta <= 137 || inta >= 145 && inta <= 153 || inta >= 162 && inta <= 169)
      inta += 64;
    if (intb >= 129 && intb <= 137 || intb >= 145 && intb <= 153 || intb >= 162 && intb <= 169)
      intb += 64;
  } else if (zcode == 218 || zcode == 250) {
    if (inta >= 225 && inta <= 250)
      inta += -32;
    if (intb >= 225 && intb <= 250)
      intb += -32;
  }
  ret_val = inta == intb;
  return ret_val;
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<lsame_>:
  endbr64
  movzbl (%rdi),%eax
  movzbl (%rsi),%edx
  mov    $0x1,%ecx
  cmp    %dl,%al
  je     L2
  movzbl %al,%eax
  movzbl %dl,%ecx
  lea    -0x61(%rax),%edi
  lea    -0x20(%rax),%esi
  cmp    $0x1a,%edi
  cmovb  %esi,%eax
  mov    %ecx,%edx
  sub    $0x61,%edx
  lea    -0x20(%rcx),%esi
  cmp    $0x1a,%edx
  cmovb  %esi,%ecx
  cmp    %ecx,%eax
  sete   %cl
  movzbl %cl,%ecx
L2:
  mov    %ecx,%eax
  ret
```

assistant: ```c
int lsame_(char *ca, char *cb) {
  int ret_val;
  int inta, intb, zcode;
  ret_val = *(unsigned char *)ca == *(unsigned char *)cb;
  if (ret_val) {
    return ret_val;
  }
  zcode = 'Z';
  inta = *(unsigned char *)ca;
  intb = *(unsigned char *)cb;
  if (zcode == 90 || zcode == 122) {
    if (inta >= 97 && inta <= 122)
      inta += -32;
    if (intb >= 97 && intb <= 122)
      intb += -32;
  } else if (zcode == 233 || zcode == 169) {
    if (inta >= 129 && inta <= 137 || inta >= 145 && inta <= 153 || inta >= 162 && inta <= 169)
      inta += 64;
    if (intb >= 129 && intb <= 137 || intb >= 145 && intb <= 153 || intb >= 162 && intb <= 169)
      intb += 64;
  } else if (zcode == 218 || zcode == 250) {
    if (inta >= 225 && inta <= 250)
      inta += -32;
    if (intb >= 225 && intb <= 250)
      intb += -32;
  }
  ret_val = inta == intb;
  return ret_val;
}
```
user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<lsame_>:
  endbr64
  movzbl (%rdi),%eax
  movzbl (%rsi),%edx
  mov    $0x1,%r8d
  cmp    %dl,%al
  je     L2
  lea    -0x61(%rax),%esi
  lea    -0x20(%rax),%ecx
  cmp    $0x1a,%esi
  lea    -0x61(%rdx),%esi
  cmovb  %ecx,%eax
  cmp    $0x1a,%esi
  lea    -0x20(%rdx),%ecx
  cmovb  %ecx,%edx
  xor    %r8d,%r8d
  cmp    %edx,%eax
  sete   %r8b
L2:
  mov    %r8d,%eax
  ret
```

assistant: ```c
int lsame_(char *ca, char *cb) {
  int ret_val;
  int inta, intb, zcode;
  ret_val = *(unsigned char *)ca == *(unsigned char *)cb;
  if (ret_val) {
    return ret_val;
  }
  zcode = 'Z';
  inta = *(unsigned char *)ca;
  intb = *(unsigned char *)cb;
  if (zcode == 90 || zcode == 122) {
    if (inta >= 97 && inta <= 122)
      inta += -32;
    if (intb >= 97 && intb <= 122)
      intb += -32;
  } else if (zcode == 233 || zcode == 169) {
    if (inta >= 129 && inta <= 137 || inta >= 145 && inta <= 153 || inta >= 162 && inta <= 169)
      inta += 64;
    if (intb >= 129 && intb <= 137 || intb >= 145 && intb <= 153 || intb >= 162 && intb <= 169)
      intb += 64;
  } else if (zcode == 218 || zcode == 250) {
    if (inta >= 225 && inta <= 250)
      inta += -32;
    if (intb >= 225 && intb <= 250)
      intb += -32;
  }
  ret_val = inta == intb;
  return ret_val;
}
```
user: 请从给定的汇编指令推导出C源代码：

```asm
<lsame_>:
  endbr64
  movzbl (%rdi),%eax
  movzbl (%rsi),%edx
  mov    $0x1,%r8d
  cmp    %dl,%al
  je     L9
  lea    -0x61(%rax),%esi
  lea    -0x20(%rax),%ecx
  cmp    $0x1a,%esi
  lea    -0x61(%rdx),%esi
  cmovb  %ecx,%eax
  cmp    $0x1a,%esi
  lea    -0x20(%rdx),%ecx
  cmovb  %ecx,%edx
  xor    %r8d,%r8d
  cmp    %edx,%eax
  sete   %r8b
L9:
  mov    %r8d,%eax
  ret
```

assistant: ```c
int lsame_(char *ca, char *cb) {
  int ret_val;
  int inta, intb, zcode;
  ret_val = *(unsigned char *)ca == *(unsigned char *)cb;
  if (ret_val) {
    return ret_val;
  }
  zcode = 'Z';
  inta = *(unsigned char *)ca;
  intb = *(unsigned char *)cb;
  if (zcode == 90 || zcode == 122) {
    if (inta >= 97 && inta <= 122)
      inta += -32;
    if (intb >= 97 && intb <= 122)
      intb += -32;
  } else if (zcode == 233 || zcode == 169) {
    if (inta >= 129 && inta <= 137 || inta >= 145 && inta <= 153 || inta >= 162 && inta <= 169)
      inta += 64;
    if (intb >= 129 && intb <= 137 || intb >= 145 && intb <= 153 || intb >= 162 && intb <= 169)
      intb += 64;
  } else if (zcode == 218 || zcode == 250) {
    if (inta >= 225 && inta <= 250)
      inta += -32;
    if (intb >= 225 && intb <= 250)
      intb += -32;
  }
  ret_val = inta == intb;
  return ret_val;
}
```
user: 这段汇编代码用C语言表示是什么样的?

```asm
<strlwr>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x10,%rsp
  mov    %rdi,-0x8(%rbp)
  jmp    L8
L5:
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  mov    %eax,%edi
  call   <tolower@plt>
  mov    %eax,%edx
  mov    -0x8(%rbp),%rax
  mov    %dl,(%rax)
  addq   $0x1,-0x8(%rbp)
L8:
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  test   %al,%al
  jne    L5
  mov    -0x8(%rbp),%rax
  leave
  ret
```

assistant: ```c
char *strlwr(char *s) {
  while (*s) {
    *s = (char)tolower(*s);
    ++s;
  }
  return s;
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<strlwr>:
  endbr64
  push   %rbx
  mov    %rdi,%rbx
  movzbl (%rdi),%edi
  test   %dil,%dil
  je     L1
L9:
  movsbl %dil,%edi
  call   <tolower@plt>
  mov    %al,(%rbx)
  add    $0x1,%rbx
  movzbl (%rbx),%edi
  test   %dil,%dil
  jne    L9
L1:
  mov    %rbx,%rax
  pop    %rbx
  ret
```

assistant: ```c
char *strlwr(char *s) {
  while (*s) {
    *s = (char)tolower(*s);
    ++s;
  }
  return s;
}
```
user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<strlwr>:
  endbr64
  push   %r12
  mov    %rdi,%r12
  movsbl (%rdi),%edi
  test   %dil,%dil
  je     L9
  nopl   0x0(%rax)
L1:
  call   <tolower@plt>
  add    $0x1,%r12
  mov    %al,-0x1(%r12)
  movsbl (%r12),%edi
  test   %dil,%dil
  jne    L1
L9:
  mov    %r12,%rax
  pop    %r12
  ret
```

assistant: ```c
char *strlwr(char *s) {
  while (*s) {
    *s = (char)tolower(*s);
    ++s;
  }
  return s;
}
```
user: 下面的汇编指令对应的C源代码是什么：

```asm
<strlwr>:
  endbr64
  push   %r12
  mov    %rdi,%r12
  movsbl (%rdi),%edi
  test   %dil,%dil
  je     L12
  nopl   0x0(%rax)
L5:
  call   <tolower@plt>
  add    $0x1,%r12
  mov    %al,-0x1(%r12)
  movsbl (%r12),%edi
  test   %dil,%dil
  jne    L5
L12:
  mov    %r12,%rax
  pop    %r12
  ret
```

assistant: ```c
char *strlwr(char *s) {
  while (*s) {
    *s = (char)tolower(*s);
    ++s;
  }
  return s;
}
```
user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<nCr>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %rdi,-0x28(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    -0x18(%rbp),%eax
  mov    %eax,%edi
  call   <mpz_init@plt>
  mov    -0x14(%rbp),%eax
  mov    %eax,%edi
  call   <mpz_init@plt>
  mov    -0x10(%rbp),%eax
  mov    %eax,%edi
  call   <mpz_init@plt>
  mov    -0xc(%rbp),%eax
  mov    %eax,%edi
  call   <mpz_init@plt>
  mov    -0x28(%rbp),%rax
  cmp    -0x30(%rbp),%rax
  jbe    L1
  mov    -0x28(%rbp),%rdx
  mov    -0x14(%rbp),%eax
  mov    %rdx,%rsi
  mov    %eax,%edi
  call   <mpz_fac_ui@plt>
  mov    -0x30(%rbp),%rdx
  mov    -0x10(%rbp),%eax
  mov    %rdx,%rsi
  mov    %eax,%edi
  call   <mpz_fac_ui@plt>
  mov    -0x28(%rbp),%rax
  sub    -0x30(%rbp),%rax
  mov    %rax,%rdx
  mov    -0xc(%rbp),%eax
  mov    %rdx,%rsi
  mov    %eax,%edi
  call   <mpz_fac_ui@plt>
  mov    -0xc(%rbp),%edx
  mov    -0x10(%rbp),%ecx
  mov    -0x10(%rbp),%eax
  mov    %ecx,%esi
  mov    %eax,%edi
  call   <mpz_mul@plt>
  mov    -0x10(%rbp),%edx
  mov    -0x14(%rbp),%ecx
  mov    -0x18(%rbp),%eax
  mov    %ecx,%esi
  mov    %eax,%edi
  call   <mpz_divexact@plt>
  jmp    L14
L1:
  mov    -0x18(%rbp),%eax
  mov    $0x0,%esi
  mov    %eax,%edi
  call   <mpz_set_ui@plt>
L14:
  mov    -0x18(%rbp),%eax
  mov    %eax,%edi
  call   <mpz_get_ui@plt>
  mov    %rax,-0x8(%rbp)
  mov    -0x18(%rbp),%eax
  mov    %eax,%edi
  call   <mpz_clear@plt>
  mov    -0x14(%rbp),%eax
  mov    %eax,%edi
  call   <mpz_clear@plt>
  mov    -0x10(%rbp),%eax
  mov    %eax,%edi
  call   <mpz_clear@plt>
  mov    -0xc(%rbp),%eax
  mov    %eax,%edi
  call   <mpz_clear@plt>
  mov    -0x8(%rbp),%rax
  leave
  ret
```

assistant: ```c
unsigned long int nCr(unsigned long int n, unsigned long int r) {
  mpz_t a, b, c, answer;
  unsigned long int ret;
  mpz_init(answer);
  mpz_init(a);
  mpz_init(b);
  mpz_init(c);
  if (n > r) {
    mpz_fac_ui(a, n);
    mpz_fac_ui(b, r);
    mpz_fac_ui(c, n - r);
    mpz_mul(b, b, c);
    mpz_divexact(answer, a, b);
  } else {
    mpz_set_ui(answer, 0);
  }
  ret = mpz_get_ui(answer);
  mpz_clear(answer);
  mpz_clear(a);
  mpz_clear(b);
  mpz_clear(c);
  return ret;
}
```
user: 请从给定的汇编指令推导出C源代码:

```asm
<nCr>:
  endbr64
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%rbp
  mov    %rsi,%r14
  mov    $0x0,%ebx
  mov    %ebx,%edi
  call   <mpz_init@plt>
  mov    $0x0,%r13d
  mov    %r13d,%edi
  call   <mpz_init@plt>
  mov    %ebx,%edi
  call   <mpz_init@plt>
  mov    $0x0,%r12d
  mov    %r12d,%edi
  call   <mpz_init@plt>
  cmp    %r14,%rbp
  jbe    L9
  mov    %rbp,%rsi
  mov    %r13d,%edi
  call   <mpz_fac_ui@plt>
  mov    %r14,%rsi
  mov    %ebx,%edi
  call   <mpz_fac_ui@plt>
  mov    %rbp,%rsi
  sub    %r14,%rsi
  mov    %r12d,%edi
  call   <mpz_fac_ui@plt>
  mov    %r12d,%edx
  mov    %ebx,%esi
  mov    %ebx,%edi
  call   <mpz_mul@plt>
  mov    %ebx,%edx
  mov    %r13d,%esi
  mov    %ebx,%edi
  call   <mpz_divexact@plt>
L16:
  mov    $0x0,%ebx
  mov    %ebx,%edi
  call   <mpz_get_ui@plt>
  mov    %rax,%rbp
  mov    %ebx,%edi
  call   <mpz_clear@plt>
  mov    $0x0,%r13d
  mov    %r13d,%edi
  call   <mpz_clear@plt>
  mov    %ebx,%edi
  call   <mpz_clear@plt>
  mov    $0x0,%r12d
  mov    %r12d,%edi
  call   <mpz_clear@plt>
  mov    %rbp,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
L9:
  mov    $0x0,%esi
  mov    $0x0,%ebx
  mov    %ebx,%edi
  call   <mpz_set_ui@plt>
  jmp    L16
```

assistant: ```c
unsigned long int nCr(unsigned long int n, unsigned long int r) {
  mpz_t a, b, c, answer;
  unsigned long int ret;
  mpz_init(answer);
  mpz_init(a);
  mpz_init(b);
  mpz_init(c);
  if (n > r) {
    mpz_fac_ui(a, n);
    mpz_fac_ui(b, r);
    mpz_fac_ui(c, n - r);
    mpz_mul(b, b, c);
    mpz_divexact(answer, a, b);
  } else {
    mpz_set_ui(answer, 0);
  }
  ret = mpz_get_ui(answer);
  mpz_clear(answer);
  mpz_clear(a);
  mpz_clear(b);
  mpz_clear(c);
  return ret;
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<nCr>:
  endbr64
  push   %r13
  xor    %r13d,%r13d
  push   %r12
  mov    %rsi,%r12
  push   %rbp
  xor    %ebp,%ebp
  push   %rbx
  mov    %rdi,%rbx
  mov    %ebp,%edi
  sub    $0x18,%rsp
  call   <mpz_init@plt>
  mov    %r13d,%edi
  call   <mpz_init@plt>
  mov    %ebp,%edi
  call   <mpz_init@plt>
  xor    %edi,%edi
  call   <mpz_init@plt>
  cmp    %r12,%rbx
  jbe    L10
  mov    %rbx,%rsi
  mov    %r13d,%edi
  sub    %r12,%rbx
  call   <mpz_fac_ui@plt>
  mov    %r12,%rsi
  mov    %ebp,%edi
  call   <mpz_fac_ui@plt>
  xor    %edi,%edi
  mov    %rbx,%rsi
  mov    %edi,0xc(%rsp)
  call   <mpz_fac_ui@plt>
  mov    0xc(%rsp),%edx
  mov    %ebp,%esi
  mov    %ebp,%edi
  call   <mpz_mul@plt>
  mov    %ebp,%edx
  mov    %r13d,%esi
  mov    %ebp,%edi
  call   <mpz_divexact@plt>
L4:
  xor    %ebp,%ebp
  mov    %ebp,%edi
  call   <mpz_get_ui@plt>
  mov    %ebp,%edi
  mov    %rax,%r12
  call   <mpz_clear@plt>
  xor    %edi,%edi
  call   <mpz_clear@plt>
  mov    %ebp,%edi
  call   <mpz_clear@plt>
  xor    %edi,%edi
  call   <mpz_clear@plt>
  add    $0x18,%rsp
  mov    %r12,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L10:
  xor    %esi,%esi
  xor    %edi,%edi
  call   <mpz_set_ui@plt>
  jmp    L4
```

assistant: ```c
unsigned long int nCr(unsigned long int n, unsigned long int r) {
  mpz_t a, b, c, answer;
  unsigned long int ret;
  mpz_init(answer);
  mpz_init(a);
  mpz_init(b);
  mpz_init(c);
  if (n > r) {
    mpz_fac_ui(a, n);
    mpz_fac_ui(b, r);
    mpz_fac_ui(c, n - r);
    mpz_mul(b, b, c);
    mpz_divexact(answer, a, b);
  } else {
    mpz_set_ui(answer, 0);
  }
  ret = mpz_get_ui(answer);
  mpz_clear(answer);
  mpz_clear(a);
  mpz_clear(b);
  mpz_clear(c);
  return ret;
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<nCr>:
  endbr64
  push   %r13
  xor    %r13d,%r13d
  push   %r12
  mov    %rsi,%r12
  push   %rbp
  xor    %ebp,%ebp
  push   %rbx
  mov    %rdi,%rbx
  mov    %ebp,%edi
  sub    $0x18,%rsp
  call   <mpz_init@plt>
  mov    %r13d,%edi
  call   <mpz_init@plt>
  mov    %ebp,%edi
  call   <mpz_init@plt>
  xor    %edi,%edi
  call   <mpz_init@plt>
  cmp    %r12,%rbx
  jbe    L14
  mov    %rbx,%rsi
  mov    %r13d,%edi
  sub    %r12,%rbx
  call   <mpz_fac_ui@plt>
  mov    %r12,%rsi
  mov    %ebp,%edi
  call   <mpz_fac_ui@plt>
  xor    %edi,%edi
  mov    %rbx,%rsi
  mov    %edi,0xc(%rsp)
  call   <mpz_fac_ui@plt>
  mov    0xc(%rsp),%edx
  mov    %ebp,%esi
  mov    %ebp,%edi
  call   <mpz_mul@plt>
  mov    %ebp,%edx
  mov    %r13d,%esi
  mov    %ebp,%edi
  call   <mpz_divexact@plt>
L16:
  xor    %ebp,%ebp
  mov    %ebp,%edi
  call   <mpz_get_ui@plt>
  mov    %ebp,%edi
  mov    %rax,%r12
  call   <mpz_clear@plt>
  xor    %edi,%edi
  call   <mpz_clear@plt>
  mov    %ebp,%edi
  call   <mpz_clear@plt>
  xor    %edi,%edi
  call   <mpz_clear@plt>
  add    $0x18,%rsp
  mov    %r12,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L14:
  xor    %esi,%esi
  xor    %edi,%edi
  call   <mpz_set_ui@plt>
  jmp    L16
```

assistant: ```c
unsigned long int nCr(unsigned long int n, unsigned long int r) {
  mpz_t a, b, c, answer;
  unsigned long int ret;
  mpz_init(answer);
  mpz_init(a);
  mpz_init(b);
  mpz_init(c);
  if (n > r) {
    mpz_fac_ui(a, n);
    mpz_fac_ui(b, r);
    mpz_fac_ui(c, n - r);
    mpz_mul(b, b, c);
    mpz_divexact(answer, a, b);
  } else {
    mpz_set_ui(answer, 0);
  }
  ret = mpz_get_ui(answer);
  mpz_clear(answer);
  mpz_clear(a);
  mpz_clear(b);
  mpz_clear(c);
  return ret;
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<top_char_test>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x18(%rbp)
  movl   $0x0,-0x4(%rbp)
  jmp    L11
L24:
  mov    $0xff,%edi
  call   <ip_usbph_font_char@plt>
  mov    %eax,%edx
  mov    -0x4(%rbp),%ecx
  mov    -0x18(%rbp),%rax
  mov    %ecx,%esi
  mov    %rax,%rdi
  call   <ip_usbph_top_char@plt>
  addl   $0x1,-0x4(%rbp)
L11:
  cmpl   $0x7,-0x4(%rbp)
  jle    L24
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <ip_usbph_flush@plt>
  mov    $0x1,%edi
  call   <sleep@plt>
  movl   $0x0,-0x4(%rbp)
  jmp    L4
L23:
  mov    -0x4(%rbp),%eax
  add    $0x41,%eax
  mov    %eax,%edi
  call   <ip_usbph_font_char@plt>
  mov    %eax,%edx
  mov    -0x4(%rbp),%ecx
  mov    -0x18(%rbp),%rax
  mov    %ecx,%esi
  mov    %rax,%rdi
  call   <ip_usbph_top_char@plt>
  addl   $0x1,-0x4(%rbp)
L4:
  cmpl   $0x7,-0x4(%rbp)
  jle    L23
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <ip_usbph_flush@plt>
  nop
  leave
  ret
```

assistant: ```c
void top_char_test(struct ip_usbph *ph) {
  int i;
  for (i = 0; i < 8; i++) {
    ip_usbph_top_char(ph, i, ip_usbph_font_char(255));
  }
  ip_usbph_flush(ph);
  sleep(1);
  for (i = 0; i < 8; i++) {
    ip_usbph_top_char(ph, i, ip_usbph_font_char(i + 'A'));
  }
  ip_usbph_flush(ph);
}
```
user: What is the c source code of the assembly code below?

```asm
<top_char_test>:
  endbr64
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    %rdi,%rbp
  mov    $0x0,%ebx
L15:
  mov    $0xff,%edi
  call   <ip_usbph_font_char@plt>
  mov    %eax,%edx
  mov    %ebx,%esi
  mov    %rbp,%rdi
  call   <ip_usbph_top_char@plt>
  add    $0x1,%ebx
  cmp    $0x8,%ebx
  jne    L15
  mov    %rbp,%rdi
  call   <ip_usbph_flush@plt>
  mov    $0x1,%edi
  call   <sleep@plt>
  mov    $0x0,%ebx
L18:
  lea    0x41(%rbx),%edi
  call   <ip_usbph_font_char@plt>
  mov    %eax,%edx
  mov    %ebx,%esi
  mov    %rbp,%rdi
  call   <ip_usbph_top_char@plt>
  add    $0x1,%ebx
  cmp    $0x8,%ebx
  jne    L18
  mov    %rbp,%rdi
  call   <ip_usbph_flush@plt>
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  ret
```

assistant: ```c
void top_char_test(struct ip_usbph *ph) {
  int i;
  for (i = 0; i < 8; i++) {
    ip_usbph_top_char(ph, i, ip_usbph_font_char(255));
  }
  ip_usbph_flush(ph);
  sleep(1);
  for (i = 0; i < 8; i++) {
    ip_usbph_top_char(ph, i, ip_usbph_font_char(i + 'A'));
  }
  ip_usbph_flush(ph);
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<top_char_test>:
  endbr64
  push   %rbp
  mov    %rdi,%rbp
  push   %rbx
  xor    %ebx,%ebx
  sub    $0x8,%rsp
  nop
L4:
  mov    $0xff,%edi
  call   <ip_usbph_font_char@plt>
  mov    %ebx,%esi
  mov    %rbp,%rdi
  add    $0x1,%ebx
  mov    %eax,%edx
  call   <ip_usbph_top_char@plt>
  cmp    $0x8,%ebx
  jne    L4
  mov    %rbp,%rdi
  xor    %ebx,%ebx
  call   <ip_usbph_flush@plt>
  mov    $0x1,%edi
  call   <sleep@plt>
  nopw   0x0(%rax,%rax,1)
L18:
  lea    0x41(%rbx),%edi
  call   <ip_usbph_font_char@plt>
  mov    %ebx,%esi
  mov    %rbp,%rdi
  add    $0x1,%ebx
  mov    %eax,%edx
  call   <ip_usbph_top_char@plt>
  cmp    $0x8,%ebx
  jne    L18
  add    $0x8,%rsp
  mov    %rbp,%rdi
  pop    %rbx
  pop    %rbp
  jmp    1080 <ip_usbph_flush@plt>
```

assistant: ```c
void top_char_test(struct ip_usbph *ph) {
  int i;
  for (i = 0; i < 8; i++) {
    ip_usbph_top_char(ph, i, ip_usbph_font_char(255));
  }
  ip_usbph_flush(ph);
  sleep(1);
  for (i = 0; i < 8; i++) {
    ip_usbph_top_char(ph, i, ip_usbph_font_char(i + 'A'));
  }
  ip_usbph_flush(ph);
}
```
user: Translate the below assembly code into C programming language:

```asm
<top_char_test>:
  endbr64
  push   %rbp
  mov    %rdi,%rbp
  push   %rbx
  xor    %ebx,%ebx
  sub    $0x8,%rsp
  nop
L12:
  mov    $0xff,%edi
  call   <ip_usbph_font_char@plt>
  mov    %ebx,%esi
  mov    %rbp,%rdi
  add    $0x1,%ebx
  mov    %eax,%edx
  call   <ip_usbph_top_char@plt>
  cmp    $0x8,%ebx
  jne    L12
  mov    %rbp,%rdi
  xor    %ebx,%ebx
  call   <ip_usbph_flush@plt>
  mov    $0x1,%edi
  call   <sleep@plt>
  nopw   0x0(%rax,%rax,1)
L16:
  lea    0x41(%rbx),%edi
  call   <ip_usbph_font_char@plt>
  mov    %ebx,%esi
  mov    %rbp,%rdi
  add    $0x1,%ebx
  mov    %eax,%edx
  call   <ip_usbph_top_char@plt>
  cmp    $0x8,%ebx
  jne    L16
  add    $0x8,%rsp
  mov    %rbp,%rdi
  pop    %rbx
  pop    %rbp
  jmp    1080 <ip_usbph_flush@plt>
```

assistant: ```c
void top_char_test(struct ip_usbph *ph) {
  int i;
  for (i = 0; i < 8; i++) {
    ip_usbph_top_char(ph, i, ip_usbph_font_char(255));
  }
  ip_usbph_flush(ph);
  sleep(1);
  for (i = 0; i < 8; i++) {
    ip_usbph_top_char(ph, i, ip_usbph_font_char(i + 'A'));
  }
  ip_usbph_flush(ph);
}
```
user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<strrev>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x18(%rbp)
  cmpq   $0x0,-0x18(%rbp)
  je     L27
  mov    -0x18(%rbp),%rax
  movzbl (%rax),%eax
  test   %al,%al
  je     L27
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  cltq
  lea    -0x1(%rax),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x8(%rbp)
  jmp    L30
L1:
  mov    -0x18(%rbp),%rax
  movzbl (%rax),%eax
  mov    %al,-0x9(%rbp)
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%edx
  mov    -0x18(%rbp),%rax
  mov    %dl,(%rax)
  mov    -0x8(%rbp),%rax
  movzbl -0x9(%rbp),%edx
  mov    %dl,(%rax)
  addq   $0x1,-0x18(%rbp)
  subq   $0x1,-0x8(%rbp)
L30:
  mov    -0x8(%rbp),%rax
  cmp    -0x18(%rbp),%rax
  ja     L1
  jmp    L4
L27:
  nop
L4:
  leave
  ret
```

assistant: ```c
void strrev(char *str) {
  char temp, *end_ptr;
  if (str == NULL || !(*str))
    return;
  end_ptr = str + strlen(str) - 1;
  while (end_ptr > str) {
    temp = *str;
    *str = *end_ptr;
    *end_ptr = temp;
    str++;
    end_ptr--;
  }
}
```