ylfeng/ReF-Decompile-dataset huggingface dataset:
user: 这段汇编代码用C语言表示是什么样的:

```asm
<load_file>:
  endbr64
  push   %r13
  push   %r12
  xor    %r12d,%r12d
  push   %rbp
  push   %rbx
  mov    %rsi,%rbx
  sub    $0x8,%rsp
  mov    D17(%rip),%rax
  mov    (%rax),%esi
  call   <open@plt>
  test   %eax,%eax
  js     L59
  mov    %eax,%ebp
  mov    D8(%rip),%rax
  xor    %esi,%esi
  mov    %ebp,%edi
  mov    (%rax),%edx
  call   <lseek@plt>
  mov    %eax,%r13d
  test   %eax,%eax
  js     L45
  mov    D14(%rip),%rax
  xor    %esi,%esi
  mov    %ebp,%edi
  mov    (%rax),%edx
  call   <lseek@plt>
  test   %eax,%eax
  je     L46
L45:
  mov    %ebp,%edi
  xor    %r12d,%r12d
  call   <close@plt>
L59:
  add    $0x8,%rsp
  mov    %r12,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nop
L46:
  lea    0x4(%r13),%edi
  call   <malloc@plt>
  mov    %rax,%r12
  test   %rax,%rax
  je     L45
  mov    %r13d,%edx
  mov    %rax,%rsi
  mov    %ebp,%edi
  call   <read@plt>
  cmp    %r13d,%eax
  jne    L55
  cltq
  mov    %rax,(%rbx)
  jmp    L59
  nopw   0x0(%rax,%rax,1)
L55:
  mov    %r12,%rdi
  call   <free@plt>
  jmp    L45
```

assistant: ```c
void *load_file(const char *fn, size_t *_sz) {
  int fd;
  off_t sz;
  void *data = NULL;
  fd = open(fn, O_RDONLY);
  if (fd < 0)
    goto fail;
  sz = lseek(fd, 0, SEEK_END);
  if (sz < 0)
    goto fail;
  if (lseek(fd, 0, SEEK_SET))
    goto fail;
  if ((data = malloc(sz + 4)) == NULL)
    goto fail;
  if (read(fd, data, sz) != sz)
    goto fail;
  *_sz = sz;
  return data;
fail:
  if (data)
    free(data);
  if (fd >= 0)
    close(fd);
  return NULL;
}
```
user: 请将以下的汇编代码转换成C语言代码：

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x10,%rsp
  movl   $0x0,-0x8(%rbp)
  movl   $0x0,-0x4(%rbp)
  jmp    L7
L11:
  mov    -0x4(%rbp),%edx
  movslq %edx,%rax
  imul   $0x55555556,%rax,%rax
  shr    $0x20,%rax
  mov    %edx,%ecx
  sar    $0x1f,%ecx
  sub    %ecx,%eax
  mov    %eax,%ecx
  add    %ecx,%ecx
  add    %eax,%ecx
  mov    %edx,%eax
  sub    %ecx,%eax
  test   %eax,%eax
  je     L24
  mov    -0x4(%rbp),%edx
  movslq %edx,%rax
  imul   $0x66666667,%rax,%rax
  shr    $0x20,%rax
  sar    %eax
  mov    %edx,%ecx
  sar    $0x1f,%ecx
  sub    %ecx,%eax
  mov    %eax,%ecx
  shl    $0x2,%ecx
  add    %eax,%ecx
  mov    %edx,%eax
  sub    %ecx,%eax
  test   %eax,%eax
  jne    L39
L24:
  mov    -0x4(%rbp),%eax
  add    %eax,-0x8(%rbp)
L39:
  addl   $0x1,-0x4(%rbp)
L7:
  cmpl   $0x3e7,-0x4(%rbp)
  jle    L11
  mov    -0x8(%rbp),%eax
  mov    %eax,%esi
  lea    D6(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  mov    $0x0,%eax
  leave
  ret
```

tool_calls: name: read_data
arguments: label: D6
type_infered: string

tool: D6: Sum: %d


assistant: ```c
int main(void) {
  int sum = 0;
  for (int n = 0; n < 1000; n += 1) {
    if (n % 3 == 0 || n % 5 == 0) {
      sum += n;
    }
  }
  printf("Sum: %d\n", sum);
  return 0;
}
```
user: 下面的汇编指令对应的C源代码是什么：

```asm
<main>:
  endbr64
  sub    $0x8,%rsp
  mov    $0x0,%edx
  mov    $0x0,%esi
  jmp    L3
L16:
  add    %edx,%esi
L39:
  add    $0x1,%edx
  cmp    $0x3e8,%edx
  je     L20
L3:
  movslq %edx,%rax
  imul   $0x55555556,%rax,%rax
  shr    $0x20,%rax
  mov    %edx,%ecx
  sar    $0x1f,%ecx
  sub    %ecx,%eax
  lea    (%rax,%rax,2),%eax
  cmp    %eax,%edx
  je     L16
  movslq %edx,%rax
  imul   $0x66666667,%rax,%rax
  sar    $0x21,%rax
  mov    %edx,%ecx
  sar    $0x1f,%ecx
  sub    %ecx,%eax
  lea    (%rax,%rax,4),%eax
  cmp    %eax,%edx
  jne    L39
  jmp    L16
L20:
  lea    D8(%rip),%rdi
  call   <printf@plt>
  mov    $0x0,%eax
  add    $0x8,%rsp
  ret
```

tool_calls: name: parse_data
arguments: tag: D8
type: string

tool: D8: Sum: %d


assistant: ```c
int main(void) {
  int sum = 0;
  for (int n = 0; n < 1000; n += 1) {
    if (n % 3 == 0 || n % 5 == 0) {
      sum += n;
    }
  }
  printf("Sum: %d\n", sum);
  return 0;
}
```
user: Translate the below assembly code into C programming language:

```asm
<main>:
  endbr64
  sub    $0x8,%rsp
  xor    %eax,%eax
  xor    %esi,%esi
  nopl   0x0(%rax)
L27:
  imul   $0xaaaaaaab,%eax,%edx
  cmp    $0x55555555,%edx
  jbe    L15
  imul   $0xcccccccd,%eax,%edx
  cmp    $0x33333333,%edx
  ja     L0
L15:
  add    %eax,%esi
L0:
  add    $0x1,%eax
  cmp    $0x3e8,%eax
  jne    L27
  lea    D7(%rip),%rdi
  call   <printf@plt>
  xor    %eax,%eax
  add    $0x8,%rsp
  ret
```

tool_calls: name: unpack_data
arguments: data_tag: D7
type_infered: string

tool: D7: Sum: %d


assistant: ```c
int main(void) {
  int sum = 0;
  for (int n = 0; n < 1000; n += 1) {
    if (n % 3 == 0 || n % 5 == 0) {
      sum += n;
    }
  }
  printf("Sum: %d\n", sum);
  return 0;
}
```
user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<main>:
  endbr64
  sub    $0x8,%rsp
  pxor   %xmm12,%xmm12
  movdqa D31(%rip),%xmm7
  xor    %eax,%eax
  movdqa %xmm12,%xmm14
  movdqa %xmm12,%xmm13
  movdqa D30(%rip),%xmm8
  movdqa D20(%rip),%xmm11
  pcmpgtd %xmm7,%xmm13
  movdqa %xmm12,%xmm9
  pcmpgtd %xmm8,%xmm14
  nopw   0x0(%rax,%rax,1)
L7:
  movdqa %xmm11,%xmm3
  movdqa %xmm9,%xmm5
  movdqa %xmm14,%xmm2
  add    $0x1,%eax
  movdqa %xmm3,%xmm0
  movdqa %xmm9,%xmm4
  movdqa %xmm14,%xmm15
  paddd  D25(%rip),%xmm11
  punpckldq %xmm3,%xmm0
  pcmpgtd %xmm0,%xmm5
  pmuludq %xmm0,%xmm2
  movdqa %xmm0,%xmm6
  pmuludq %xmm8,%xmm6
  movdqa %xmm5,%xmm1
  pmuludq %xmm7,%xmm5
  pmuludq %xmm8,%xmm1
  paddq  %xmm2,%xmm1
  movdqa %xmm3,%xmm2
  punpckhdq %xmm3,%xmm2
  psllq  $0x20,%xmm1
  pcmpgtd %xmm2,%xmm4
  paddq  %xmm1,%xmm6
  movdqa %xmm2,%xmm10
  pmuludq %xmm2,%xmm15
  pmuludq %xmm8,%xmm10
  movdqa %xmm4,%xmm1
  pmuludq %xmm7,%xmm4
  pmuludq %xmm8,%xmm1
  paddq  %xmm15,%xmm1
  psllq  $0x20,%xmm1
  paddq  %xmm10,%xmm1
  shufps $0xdd,%xmm1,%xmm6
  psrad  $0x1,%xmm6
  movdqa %xmm6,%xmm1
  pslld  $0x2,%xmm1
  paddd  %xmm6,%xmm1
  movdqa %xmm13,%xmm6
  pmuludq %xmm0,%xmm6
  pmuludq %xmm7,%xmm0
  pcmpeqd %xmm3,%xmm1
  pcmpeqd %xmm9,%xmm1
  paddq  %xmm6,%xmm5
  psllq  $0x20,%xmm5
  paddq  %xmm5,%xmm0
  movdqa %xmm13,%xmm5
  pmuludq %xmm2,%xmm5
  pmuludq %xmm7,%xmm2
  paddq  %xmm5,%xmm4
  psllq  $0x20,%xmm4
  paddq  %xmm4,%xmm2
  shufps $0xdd,%xmm2,%xmm0
  movdqa %xmm0,%xmm2
  pslld  $0x1,%xmm2
  paddd  %xmm2,%xmm0
  pcmpeqd %xmm3,%xmm0
  pcmpeqd %xmm9,%xmm0
  pand   %xmm0,%xmm1
  pandn  %xmm3,%xmm1
  paddd  %xmm1,%xmm12
  cmp    $0xfa,%eax
  jne    L7
  movdqa %xmm12,%xmm0
  lea    D15(%rip),%rdi
  psrldq $0x8,%xmm0
  paddd  %xmm0,%xmm12
  movdqa %xmm12,%xmm0
  psrldq $0x4,%xmm0
  paddd  %xmm0,%xmm12
  movd   %xmm12,%esi
  call   <printf@plt>
  xor    %eax,%eax
  add    $0x8,%rsp
  ret
```

tool_calls: name: disassemble_data
arguments: data_label: D31
data_type: byte[16]
name: disassemble_data
arguments: data_label: D30
data_type: byte[16]
name: disassemble_data
arguments: data_label: D20
data_type: byte[16]
name: disassemble_data
arguments: data_label: D25
data_type: byte[16]
name: disassemble_data
arguments: data_label: D15
data_type: string

tool: {"D31": [0x56,0x55,0x55,0x55,0x56,0x55,0x55,0x55,0x56,0x55,0x55,0x55,0x56,0x55,0x55,0x55]}

tool: {"D30": [0x67,0x66,0x66,0x66,0x67,0x66,0x66,0x66,0x67,0x66,0x66,0x66,0x67,0x66,0x66,0x66]}

tool: {"D20": [0x00,0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x02,0x00,0x00,0x00,0x03,0x00,0x00,0x00]}

tool: {"D25": [0x04,0x00,0x00,0x00,0x04,0x00,0x00,0x00,0x04,0x00,0x00,0x00,0x04,0x00,0x00,0x00]}

tool: D15: Sum: %d


assistant: ```c
int main(void) {
  int sum = 0;
  for (int n = 0; n < 1000; n += 1) {
    if (n % 3 == 0 || n % 5 == 0) {
      sum += n;
    }
  }
  printf("Sum: %d\n", sum);
  return 0;
}
```
user: What is the c source code of the assembly code below?

```asm
<bitmap_ord_to_pos>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x18(%rbp)
  mov    %esi,-0x1c(%rbp)
  mov    %edx,-0x20(%rbp)
  movl   $0x0,-0x8(%rbp)
  cmpl   $0x0,-0x1c(%rbp)
  js     L49
  mov    -0x1c(%rbp),%eax
  cmp    -0x20(%rbp),%eax
  jge    L49
  mov    -0x20(%rbp),%edx
  mov    -0x18(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <find_first_bit@plt>
  mov    %eax,-0x4(%rbp)
  jmp    L42
L38:
  subl   $0x1,-0x1c(%rbp)
  mov    -0x4(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    -0x20(%rbp),%ecx
  mov    -0x18(%rbp),%rax
  mov    %ecx,%esi
  mov    %rax,%rdi
  call   <find_next_bit@plt>
  mov    %eax,-0x4(%rbp)
L42:
  mov    -0x4(%rbp),%eax
  cmp    -0x20(%rbp),%eax
  jge    L62
  cmpl   $0x0,-0x1c(%rbp)
  jg     L38
L62:
  mov    -0x4(%rbp),%eax
  cmp    -0x20(%rbp),%eax
  jge    L49
  cmpl   $0x0,-0x1c(%rbp)
  jne    L49
  mov    -0x4(%rbp),%eax
  mov    %eax,-0x8(%rbp)
L49:
  mov    -0x8(%rbp),%eax
  leave
  ret
```

assistant: ```c
int bitmap_ord_to_pos(const unsigned long *buf, int ord, int bits) {
  int pos = 0;
  if (ord >= 0 && ord < bits) {
    int i;
    for (i = find_first_bit(buf, bits); i < bits && ord > 0; i = find_next_bit(buf, bits, i + 1))
      ord--;
    if (i < bits && ord == 0)
      pos = i;
  }
  return pos;
}
```
user: What would the C source look like for the assembly code provided here:

```asm
<bitmap_ord_to_pos>:
  endbr64
  test   %esi,%esi
  js     L58
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%r12
  mov    %esi,%ebx
  mov    %edx,%ebp
  mov    $0x0,%eax
  cmp    %edx,%esi
  jl     L59
L10:
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
L59:
  mov    %edx,%esi
  call   <find_first_bit@plt>
  cmp    %eax,%ebp
  setg   %dl
  test   %ebx,%ebx
  jle    L51
  test   %dl,%dl
  je     L51
L56:
  sub    $0x1,%ebx
  lea    0x1(%rax),%edx
  mov    %ebp,%esi
  mov    %r12,%rdi
  call   <find_next_bit@plt>
  cmp    %eax,%ebp
  setg   %dl
  test   %ebx,%ebx
  jle    L51
  test   %dl,%dl
  jne    L56
L51:
  test   %ebx,%ebx
  jne    L69
  test   %dl,%dl
  jne    L10
L69:
  mov    $0x0,%eax
  jmp    L10
L58:
  mov    $0x0,%eax
  ret
```

assistant: ```c
int bitmap_ord_to_pos(const unsigned long *buf, int ord, int bits) {
  int pos = 0;
  if (ord >= 0 && ord < bits) {
    int i;
    for (i = find_first_bit(buf, bits); i < bits && ord > 0; i = find_next_bit(buf, bits, i + 1))
      ord--;
    if (i < bits && ord == 0)
      pos = i;
  }
  return pos;
}
```
user: 这段汇编代码用C语言表示是什么样的：

```asm
<bitmap_ord_to_pos>:
  endbr64
  test   %esi,%esi
  js     L33
  push   %r12
  mov    %edx,%r12d
  push   %rbp
  push   %rbx
  mov    %esi,%ebx
  cmp    %edx,%esi
  jl     L18
L3:
  pop    %rbx
  xor    %eax,%eax
  pop    %rbp
  pop    %r12
  ret
  nopl   0x0(%rax)
L18:
  mov    %edx,%esi
  mov    %rdi,%rbp
  call   <find_first_bit@plt>
  cmp    %eax,%r12d
  setg   %dl
  test   %ebx,%ebx
  jg     L51
  jmp    L53
  cs nopw 0x0(%rax,%rax,1)
L79:
  lea    0x1(%rax),%edx
  mov    %r12d,%esi
  mov    %rbp,%rdi
  sub    $0x1,%ebx
  call   <find_next_bit@plt>
  cmp    %eax,%r12d
  setg   %dl
  test   %ebx,%ebx
  jle    L53
L51:
  test   %dl,%dl
  jne    L79
L53:
  test   %ebx,%ebx
  jne    L3
  test   %dl,%dl
  je     L3
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
  nopl   0x0(%rax)
L33:
  xor    %eax,%eax
  ret
```

assistant: ```c
int bitmap_ord_to_pos(const unsigned long *buf, int ord, int bits) {
  int pos = 0;
  if (ord >= 0 && ord < bits) {
    int i;
    for (i = find_first_bit(buf, bits); i < bits && ord > 0; i = find_next_bit(buf, bits, i + 1))
      ord--;
    if (i < bits && ord == 0)
      pos = i;
  }
  return pos;
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<bitmap_ord_to_pos>:
  endbr64
  test   %esi,%esi
  js     L40
  push   %r12
  mov    %edx,%r12d
  push   %rbp
  push   %rbx
  mov    %esi,%ebx
  cmp    %edx,%esi
  jl     L76
L78:
  pop    %rbx
  xor    %eax,%eax
  pop    %rbp
  pop    %r12
  ret
  nopl   0x0(%rax)
L76:
  mov    %edx,%esi
  mov    %rdi,%rbp
  call   <find_first_bit@plt>
  cmp    %eax,%r12d
  setg   %dl
  test   %ebx,%ebx
  jg     L70
  jmp    L6
  cs nopw 0x0(%rax,%rax,1)
L2:
  lea    0x1(%rax),%edx
  mov    %r12d,%esi
  mov    %rbp,%rdi
  sub    $0x1,%ebx
  call   <find_next_bit@plt>
  cmp    %eax,%r12d
  setg   %dl
  test   %ebx,%ebx
  jle    L6
L70:
  test   %dl,%dl
  jne    L2
L6:
  test   %ebx,%ebx
  jne    L78
  test   %dl,%dl
  je     L78
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
  nopl   0x0(%rax)
L40:
  xor    %eax,%eax
  ret
```

assistant: ```c
int bitmap_ord_to_pos(const unsigned long *buf, int ord, int bits) {
  int pos = 0;
  if (ord >= 0 && ord < bits) {
    int i;
    for (i = find_first_bit(buf, bits); i < bits && ord > 0; i = find_next_bit(buf, bits, i + 1))
      ord--;
    if (i < bits && ord == 0)
      pos = i;
  }
  return pos;
}
```
user: 这段汇编代码用C语言表示是什么样的:

```asm
<find_serial>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movl   $0xffffffff,-0x24(%rbp)
  movabs $0x7974742f7665642f,%rax
  mov    %rax,-0x15(%rbp)
  movl   $0x5f425355,-0xd(%rbp)
  movb   $0x0,-0x9(%rbp)
  movl   $0x0,-0x20(%rbp)
  jmp    L6
L68:
  mov    -0x20(%rbp),%eax
  add    $0x30,%eax
  mov    %al,-0xa(%rbp)
  mov    D28(%rip),%rax
  mov    (%rax),%edx
  mov    D18(%rip),%rax
  mov    (%rax),%eax
  or     %eax,%edx
  lea    -0x15(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <open@plt>
  mov    %eax,-0x24(%rbp)
  cmpl   $0x0,-0x24(%rbp)
  jne    L21
  mov    -0x24(%rbp),%eax
  jmp    L4
L21:
  addl   $0x1,-0x20(%rbp)
L6:
  cmpl   $0x9,-0x20(%rbp)
  jbe    L68
  movb   $0x53,-0xd(%rbp)
  movb   $0x0,-0xb(%rbp)
  movl   $0x0,-0x1c(%rbp)
  jmp    L35
L25:
  mov    -0x1c(%rbp),%eax
  add    $0x30,%eax
  mov    %al,-0xc(%rbp)
  mov    D28(%rip),%rax
  mov    (%rax),%edx
  mov    D18(%rip),%rax
  mov    (%rax),%eax
  or     %eax,%edx
  lea    -0x15(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <open@plt>
  mov    %eax,-0x24(%rbp)
  cmpl   $0x0,-0x24(%rbp)
  je     L58
  addl   $0x1,-0x1c(%rbp)
L35:
  cmpl   $0x9,-0x1c(%rbp)
  jbe    L25
  jmp    L81
L58:
  nop
L81:
  mov    -0x24(%rbp),%eax
L4:
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L40
  call   <__stack_chk_fail@plt>
L40:
  leave
  ret
```

assistant: ```c
int find_serial() {
  int fd = -1;
  char port[] = "/dev/ttyUSB_";
  for (unsigned i = 0; i < 10; i++) {
    port[11] = i + 0x30;
    fd = open(port, O_RDWR | O_NOCTTY);
    if (!fd) {
      return fd;
    }
  }
  port[8] = 'S';
  port[10] = 0;
  for (unsigned i = 0; i < 10; i++) {
    port[9] = i + 0x30;
    fd = open(port, O_RDWR | O_NOCTTY);
    if (!fd) {
      break;
    }
  }
  return fd;
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<find_serial>:
  endbr64
  push   %rbp
  push   %rbx
  sub    $0x28,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  movabs $0x7974742f7665642f,%rax
  mov    %rax,0xb(%rsp)
  movl   $0x5f425355,0x13(%rsp)
  movb   $0x0,0x17(%rsp)
  mov    $0x30,%ebx
  mov    D5(%rip),%rbp
L15:
  mov    %bl,0x16(%rsp)
  mov    0x0(%rbp),%esi
  mov    D27(%rip),%rax
  or     (%rax),%esi
  lea    0xb(%rsp),%rdi
  call   <open@plt>
  test   %eax,%eax
  je     L19
  add    $0x1,%ebx
  cmp    $0x3a,%bl
  jne    L15
  movb   $0x53,0x13(%rsp)
  movb   $0x0,0x15(%rsp)
  mov    $0x30,%ebx
  mov    D5(%rip),%rbp
L13:
  mov    %bl,0x14(%rsp)
  mov    0x0(%rbp),%esi
  mov    D27(%rip),%rax
  or     (%rax),%esi
  lea    0xb(%rsp),%rdi
  call   <open@plt>
  test   %eax,%eax
  je     L19
  add    $0x1,%ebx
  cmp    $0x3a,%bl
  jne    L13
L19:
  mov    0x18(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L18
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  ret
L18:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int find_serial() {
  int fd = -1;
  char port[] = "/dev/ttyUSB_";
  for (unsigned i = 0; i < 10; i++) {
    port[11] = i + 0x30;
    fd = open(port, O_RDWR | O_NOCTTY);
    if (!fd) {
      return fd;
    }
  }
  port[8] = 'S';
  port[10] = 0;
  for (unsigned i = 0; i < 10; i++) {
    port[9] = i + 0x30;
    fd = open(port, O_RDWR | O_NOCTTY);
    if (!fd) {
      break;
    }
  }
  return fd;
}
```
user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<find_serial>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    $0x30,%ebx
  sub    $0x28,%rsp
  mov    D16(%rip),%r12
  mov    D6(%rip),%rbp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  movabs $0x7974742f7665642f,%rax
  movl   $0x5f425355,0x13(%rsp)
  lea    0xb(%rsp),%r13
  movb   $0x0,0x17(%rsp)
  mov    %rax,0xb(%rsp)
L58:
  mov    (%r12),%esi
  mov    %r13,%rdi
  or     0x0(%rbp),%esi
  mov    %bl,0x16(%rsp)
  call   <open@plt>
  test   %eax,%eax
  je     L17
  add    $0x1,%ebx
  cmp    $0x3a,%bl
  jne    L58
  movb   $0x53,0x13(%rsp)
  mov    $0x30,%ebx
  movb   $0x0,0x15(%rsp)
  xchg   %ax,%ax
L40:
  mov    (%r12),%esi
  mov    %r13,%rdi
  or     0x0(%rbp),%esi
  mov    %bl,0x14(%rsp)
  call   <open@plt>
  test   %eax,%eax
  je     L17
  add    $0x1,%ebx
  cmp    $0x3a,%bl
  jne    L40
L33:
  mov    0x18(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L25
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopw   0x0(%rax,%rax,1)
L17:
  xor    %eax,%eax
  jmp    L33
L25:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int find_serial() {
  int fd = -1;
  char port[] = "/dev/ttyUSB_";
  for (unsigned i = 0; i < 10; i++) {
    port[11] = i + 0x30;
    fd = open(port, O_RDWR | O_NOCTTY);
    if (!fd) {
      return fd;
    }
  }
  port[8] = 'S';
  port[10] = 0;
  for (unsigned i = 0; i < 10; i++) {
    port[9] = i + 0x30;
    fd = open(port, O_RDWR | O_NOCTTY);
    if (!fd) {
      break;
    }
  }
  return fd;
}
```
user: 这段汇编代码用C语言表示是什么样的:

```asm
<find_serial>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    $0x30,%ebx
  sub    $0x28,%rsp
  mov    D15(%rip),%r12
  mov    D10(%rip),%rbp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  movabs $0x7974742f7665642f,%rax
  movl   $0x5f425355,0x13(%rsp)
  lea    0xb(%rsp),%r13
  movb   $0x0,0x17(%rsp)
  mov    %rax,0xb(%rsp)
L50:
  mov    (%r12),%esi
  mov    %r13,%rdi
  or     0x0(%rbp),%esi
  mov    %bl,0x16(%rsp)
  call   <open@plt>
  test   %eax,%eax
  je     L22
  add    $0x1,%ebx
  cmp    $0x3a,%bl
  jne    L50
  movb   $0x53,0x13(%rsp)
  mov    $0x30,%ebx
  movb   $0x0,0x15(%rsp)
  xchg   %ax,%ax
L4:
  mov    (%r12),%esi
  mov    %r13,%rdi
  or     0x0(%rbp),%esi
  mov    %bl,0x14(%rsp)
  call   <open@plt>
  test   %eax,%eax
  je     L22
  add    $0x1,%ebx
  cmp    $0x3a,%bl
  jne    L4
L42:
  mov    0x18(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L2
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopw   0x0(%rax,%rax,1)
L22:
  xor    %eax,%eax
  jmp    L42
L2:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int find_serial() {
  int fd = -1;
  char port[] = "/dev/ttyUSB_";
  for (unsigned i = 0; i < 10; i++) {
    port[11] = i + 0x30;
    fd = open(port, O_RDWR | O_NOCTTY);
    if (!fd) {
      return fd;
    }
  }
  port[8] = 'S';
  port[10] = 0;
  for (unsigned i = 0; i < 10; i++) {
    port[9] = i + 0x30;
    fd = open(port, O_RDWR | O_NOCTTY);
    if (!fd) {
      break;
    }
  }
  return fd;
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<libc_ldtos>:
  endbr64
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x10,%rsp
  mov    $0x20,%edi
  call   <malloc@plt>
  mov    %rax,%r12
  fldt   0x40(%rsp)
  fldz
  fcomip %st(1),%st
  fstp   %st(0)
  ja     L63
  movb   $0x0,(%rax)
  mov    $0x0,%ebp
L5:
  fnstcw 0xe(%rsp)
  movzwl 0xe(%rsp),%eax
  or     $0xc,%ah
  mov    %ax,0xc(%rsp)
  fldt   0x40(%rsp)
  fldcw  0xc(%rsp)
  fistpll (%rsp)
  fldcw  0xe(%rsp)
  mov    (%rsp),%r13
  test   %r13,%r13
  jne    L28
  lea    0x1(%rbp),%rbx
  movb   $0x30,(%r12,%rbp,1)
  jmp    L35
L63:
  movb   $0x2d,(%rax)
  fldt   0x40(%rsp)
  fchs
  fstpt  0x40(%rsp)
  mov    $0x1,%ebp
  jmp    L5
L28:
  jle    L40
  mov    %r13,%rcx
  mov    %rbp,%rbx
  movabs $0x6666666666666667,%rsi
L98:
  mov    %rcx,%rax
  imul   %rsi
  sar    $0x2,%rdx
  mov    %rcx,%rax
  sar    $0x3f,%rax
  sub    %rax,%rdx
  mov    %rdx,%rdi
  lea    (%rdx,%rdx,4),%rax
  add    %rax,%rax
  mov    %rcx,%rdx
  sub    %rax,%rdx
  mov    %rcx,%rax
  mov    %rdi,%rcx
  mov    %rbx,%r14
  add    $0x1,%rbx
  add    $0x30,%edx
  mov    %dl,-0x1(%r12,%rbx,1)
  cmp    $0x9,%rax
  jg     L98
  cmp    %r14,%rbp
  jge    L35
L55:
  movsbl (%r12,%r14,1),%esi
  movsbl (%r12,%rbp,1),%edi
  call   <swap@plt>
  add    $0x1,%rbp
  sub    $0x1,%r14
  cmp    %r14,%rbp
  jl     L55
  fnstcw 0xe(%rsp)
  movzwl 0xe(%rsp),%eax
  or     $0xc,%ah
  mov    %ax,0xc(%rsp)
L35:
  mov    %r13,(%rsp)
  fildll (%rsp)
  fldt   0x40(%rsp)
  fsubp  %st,%st(1)
  lea    (%r12,%rbx,1),%rdi
  movb   $0x2e,(%rdi)
  mov    %rdi,%rsi
  mov    $0x12,%r9d
  sub    %rbx,%r9
  mov    $0x7,%eax
  cmp    %rax,%r9
  cmovl  %rax,%r9
  add    %r9,%rdi
  flds   0xd8f(%rip)        # 2000 <_fini+0xd18>
  movabs $0x6666666666666667,%r8
  jmp    L12
L70:
  fxch   %st(1)
L12:
  fmul   %st,%st(1)
  fxch   %st(1)
  fld    %st(0)
  fldcw  0xc(%rsp)
  fistpll (%rsp)
  fldcw  0xe(%rsp)
  mov    (%rsp),%rcx
  mov    %rcx,%rax
  imul   %r8
  sar    $0x2,%rdx
  mov    %rcx,%rax
  sar    $0x3f,%rax
  sub    %rax,%rdx
  lea    (%rdx,%rdx,4),%rax
  add    %rax,%rax
  sub    %rax,%rcx
  add    $0x30,%ecx
  mov    %cl,0x1(%rsi)
  add    $0x1,%rsi
  cmp    %rsi,%rdi
  jne    L70
  fstp   %st(0)
  fstp   %st(0)
  add    %r12,%rbx
  movb   $0x0,(%rbx,%r9,1)
  mov    %r12,%rax
  add    $0x10,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
L40:
  mov    %rbp,%rbx
  jmp    L35
```

assistant: ```c
char *libc_ldtos(long double n) {
  char *buff = malloc(32);
  *buff = +0;
  char *a2 = buff;
  long long i = 0, j = 0, k = 0;
  long long x = 0, y = 0, t = 0, z = 0, u = 0;
  if (n < 0) {
    a2[j++] = '-';
    n = -n;
  }
  y = x = n;
  if (x == 0) {
    a2[j++] = '0';
  }
  k = j;
  while (x > 0) {
    t = x % 10;
    x /= 10;
    a2[k++] = t + '0';
  }
  i = k--;
  while (k > j) {
    swap(a2[j], a2[k]);
    j++;
    k--;
  }
  j = i;
  n = n - y;
  a2[j++] = '.';
  u = (19 - j);
  if (u < 7) {
    u = 7;
  }
  z = 0;
  while (z < (u)) {
    n = n * 10;
    t = (long long)n % 10;
    a2[j++] = t + '0';
    z++;
  }
  a2[j - 1] = '\0';
  return a2;
}
```