ylfeng/ReF-Decompile-dataset huggingface dataset:
user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<binToDec>:
  endbr64
  test   %esi,%esi
  jle    L0
  push   %r12
  push   %rbp
  push   %rbx
  mov    %esi,%r12d
  lea    0x9(%rdi),%rbp
  mov    $0x0,%ebx
L14:
  mov    %ebx,%edi
  call   <ex2@plt>
  movsbl 0x0(%rbp),%edx
  sub    $0x30,%edx
  movsbl %al,%eax
  imul   %eax,%edx
  add    %edx,D22(%rip)
  add    $0x1,%ebx
  sub    $0x1,%rbp
  cmp    %ebx,%r12d
  jne    L14
  mov    D22(%rip),%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
L0:
  mov    D22(%rip),%eax
  ret
```

assistant: ```c
int binToDec(char *bin, int no) {
  static int dec = 0;
  int i;
  for (i = 0; i < no; ++i) {
    dec = dec + (ex2(i) * (bin[9 - i] - '0'));
  }
  return dec;
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<binToDec>:
  endbr64
  test   %esi,%esi
  jle    L10
  push   %r12
  lea    0x9(%rdi),%r12
  push   %rbp
  mov    %esi,%ebp
  push   %rbx
  xor    %ebx,%ebx
  nopl   0x0(%rax)
L8:
  mov    %ebx,%edi
  add    $0x1,%ebx
  sub    $0x1,%r12
  call   <ex2@plt>
  movsbl %al,%edx
  movsbl 0x1(%r12),%eax
  sub    $0x30,%eax
  imul   %edx,%eax
  add    D23(%rip),%eax
  mov    %eax,D18(%rip)
  cmp    %ebx,%ebp
  jne    L8
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
  nopw   0x0(%rax,%rax,1)
L10:
  mov    D18(%rip),%eax
  ret
```

assistant: ```c
int binToDec(char *bin, int no) {
  static int dec = 0;
  int i;
  for (i = 0; i < no; ++i) {
    dec = dec + (ex2(i) * (bin[9 - i] - '0'));
  }
  return dec;
}
```
user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<binToDec>:
  endbr64
  test   %esi,%esi
  jle    L0
  push   %r12
  lea    0x9(%rdi),%r12
  push   %rbp
  mov    %esi,%ebp
  push   %rbx
  xor    %ebx,%ebx
  nopl   0x0(%rax)
L2:
  mov    %ebx,%edi
  add    $0x1,%ebx
  sub    $0x1,%r12
  call   <ex2@plt>
  movsbl %al,%edx
  movsbl 0x1(%r12),%eax
  sub    $0x30,%eax
  imul   %edx,%eax
  add    D12(%rip),%eax
  mov    %eax,D5(%rip)
  cmp    %ebx,%ebp
  jne    L2
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
  nopw   0x0(%rax,%rax,1)
L0:
  mov    D5(%rip),%eax
  ret
```

assistant: ```c
int binToDec(char *bin, int no) {
  static int dec = 0;
  int i;
  for (i = 0; i < no; ++i) {
    dec = dec + (ex2(i) * (bin[9 - i] - '0'));
  }
  return dec;
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<free_dm>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x18(%rbp)
  mov    %esi,-0x1c(%rbp)
  cmpl   $0x0,-0x1c(%rbp)
  jne    L1
  movl   $0x1,-0x1c(%rbp)
L1:
  movl   $0x1,-0x4(%rbp)
  jmp    L15
L16:
  mov    -0x4(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  add    $0x8,%rax
  mov    %rax,%rdi
  call   <free@plt>
  addl   $0x1,-0x4(%rbp)
L15:
  mov    -0x4(%rbp),%eax
  cmp    -0x1c(%rbp),%eax
  jle    L16
  mov    -0x18(%rbp),%rax
  add    $0x8,%rax
  mov    %rax,%rdi
  call   <free@plt>
  nop
  leave
  ret
```

assistant: ```c
void free_dm(double **m, int rows) {
  int i;
  if (!rows)
    rows = 1;
  for (i = 1; i <= rows; i++)
    free((char *)(m[i] + 1));
  free((char *)(m + 1));
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<free_dm>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%rbp
  test   %esi,%esi
  je     L22
  mov    %esi,%r12d
  jle    L18
  mov    $0x1,%ebx
L32:
  mov    0x0(%rbp,%rbx,8),%rax
  lea    0x8(%rax),%rdi
  call   <free@plt>
  add    $0x1,%rbx
  cmp    %ebx,%r12d
  jge    L32
  jmp    L18
L22:
  mov    0x8(%rdi),%rax
  lea    0x8(%rax),%rdi
  call   <free@plt>
L18:
  lea    0x8(%rbp),%rdi
  call   <free@plt>
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
```

assistant: ```c
void free_dm(double **m, int rows) {
  int i;
  if (!rows)
    rows = 1;
  for (i = 1; i <= rows; i++)
    free((char *)(m[i] + 1));
  free((char *)(m + 1));
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<free_dm>:
  endbr64
  push   %r13
  lea    0x8(%rdi),%r13
  push   %r12
  push   %rbp
  mov    %rdi,%rbp
  push   %rbx
  sub    $0x8,%rsp
  test   %esi,%esi
  jne    L9
  mov    0x8(%rdi),%rdi
  add    $0x8,%rdi
  call   <free@plt>
L16:
  add    $0x8,%rsp
  mov    %r13,%rdi
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  jmp    1050 <free@plt>
  nopl   0x0(%rax,%rax,1)
L9:
  mov    %esi,%r12d
  mov    $0x1,%ebx
  jle    L16
  nopw   0x0(%rax,%rax,1)
L37:
  mov    0x0(%rbp,%rbx,8),%rax
  add    $0x1,%rbx
  lea    0x8(%rax),%rdi
  call   <free@plt>
  cmp    %ebx,%r12d
  jge    L37
  jmp    L16
```

assistant: ```c
void free_dm(double **m, int rows) {
  int i;
  if (!rows)
    rows = 1;
  for (i = 1; i <= rows; i++)
    free((char *)(m[i] + 1));
  free((char *)(m + 1));
}
```
user: 这段汇编代码用C语言表示是什么样的：

```asm
<free_dm>:
  endbr64
  push   %r13
  lea    0x8(%rdi),%r13
  push   %r12
  push   %rbp
  mov    %rdi,%rbp
  push   %rbx
  sub    $0x8,%rsp
  test   %esi,%esi
  jne    L5
  mov    0x8(%rdi),%rdi
  add    $0x8,%rdi
  call   <free@plt>
L22:
  add    $0x8,%rsp
  mov    %r13,%rdi
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  jmp    1050 <free@plt>
  nopl   0x0(%rax,%rax,1)
L5:
  mov    %esi,%r12d
  mov    $0x1,%ebx
  jle    L22
  nopw   0x0(%rax,%rax,1)
L19:
  mov    0x0(%rbp,%rbx,8),%rax
  add    $0x1,%rbx
  lea    0x8(%rax),%rdi
  call   <free@plt>
  cmp    %ebx,%r12d
  jge    L19
  jmp    L22
```

assistant: ```c
void free_dm(double **m, int rows) {
  int i;
  if (!rows)
    rows = 1;
  for (i = 1; i <= rows; i++)
    free((char *)(m[i] + 1));
  free((char *)(m + 1));
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<fib_recur>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %rbx
  sub    $0x18,%rsp
  mov    %edi,-0x14(%rbp)
  cmpl   $0x0,-0x14(%rbp)
  jne    L32
  mov    $0x0,%eax
  jmp    L28
L32:
  cmpl   $0x1,-0x14(%rbp)
  jne    L11
  mov    $0x1,%eax
  jmp    L28
L11:
  mov    -0x14(%rbp),%eax
  sub    $0x1,%eax
  mov    %eax,%edi
  call   <fib_recur>
  mov    %rax,%rbx
  mov    -0x14(%rbp),%eax
  sub    $0x2,%eax
  mov    %eax,%edi
  call   <fib_recur>
  add    %rbx,%rax
L28:
  mov    -0x8(%rbp),%rbx
  leave
  ret
```

assistant: ```c
unsigned long long fib_recur(int n) {
  if (n == 0) {
    return 0;
  } else if (n == 1) {
    return 1;
  } else {
    return fib_recur(n - 1) + fib_recur(n - 2);
  }
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<fib_recur>:
  endbr64
  mov    $0x0,%eax
  test   %edi,%edi
  je     L15
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    %edi,%ebx
  mov    $0x1,%eax
  cmp    $0x1,%edi
  jne    L27
L4:
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  ret
L27:
  lea    -0x1(%rdi),%edi
  call   <fib_recur>
  mov    %rax,%rbp
  lea    -0x2(%rbx),%edi
  call   <fib_recur>
  add    %rbp,%rax
  jmp    L4
L15:
  ret
```

assistant: ```c
unsigned long long fib_recur(int n) {
  if (n == 0) {
    return 0;
  } else if (n == 1) {
    return 1;
  } else {
    return fib_recur(n - 1) + fib_recur(n - 2);
  }
}
```
user: 请将以下的汇编代码转换成C语言代码：

```asm
<process_request>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %rdi,-0x28(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    %rdx,-0x38(%rbp)
  mov    %ecx,-0x3c(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  mov    -0x30(%rbp),%rax
  mov    (%rax),%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x10(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,-0x18(%rbp)
  mov    -0x30(%rbp),%rax
  movl   $0x0,(%rax)
  jmp    L89
L24:
  mov    -0x18(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    %rdx,-0x18(%rbp)
  movzbl (%rax),%eax
  cmp    $0x24,%al
  jne    L89
  mov    -0x18(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x1,%al
  jne    L9
  mov    $0x22b,%edi
  call   <htons@plt>
  mov    %ax,-0x1a(%rbp)
  lea    -0x1a(%rbp),%rcx
  mov    -0x28(%rbp),%rax
  mov    $0x2,%edx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <memcpy@plt>
  mov    $0x293c,%edi
  call   <htons@plt>
  mov    %ax,-0x1a(%rbp)
  mov    -0x28(%rbp),%rax
  lea    0x2(%rax),%rcx
  lea    -0x1a(%rbp),%rax
  mov    $0x2,%edx
  mov    %rax,%rsi
  mov    %rcx,%rdi
  call   <memcpy@plt>
  mov    -0x30(%rbp),%rax
  movl   $0x8,(%rax)
  jmp    L89
L9:
  mov    -0x18(%rbp),%rax
  movzbl (%rax),%eax
  test   %al,%al
  jne    L76
  mov    -0x38(%rbp),%rax
  movb   $0x2,(%rax)
  mov    -0x18(%rbp),%rax
  lea    -0x1(%rax),%rcx
  mov    -0x3c(%rbp),%eax
  mov    $0x1,%edx
  mov    %rcx,%rsi
  mov    %eax,%edi
  call   <write@plt>
  addq   $0x1,-0x18(%rbp)
  jmp    L89
L76:
  mov    -0x18(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x2,%al
  jne    L101
  mov    -0x18(%rbp),%rax
  lea    0x3(%rax),%rcx
  mov    -0x3c(%rbp),%eax
  mov    $0x1,%edx
  mov    %rcx,%rsi
  mov    %eax,%edi
  call   <write@plt>
  addq   $0x4,-0x18(%rbp)
  jmp    L89
L101:
  mov    -0x18(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x3,%al
  jne    L89
  mov    -0x18(%rbp),%rax
  add    $0x2,%rax
  movb   $0x20,(%rax)
  mov    -0x18(%rbp),%rax
  lea    0x2(%rax),%rcx
  mov    -0x3c(%rbp),%eax
  mov    $0x3,%edx
  mov    %rcx,%rsi
  mov    %eax,%edi
  call   <write@plt>
  addq   $0x5,-0x18(%rbp)
L89:
  mov    -0x18(%rbp),%rax
  cmp    -0x10(%rbp),%rax
  jne    L24
  nop
  mov    -0x8(%rbp),%rax
  sub    %fs:0x28,%rax
  je     L99
  call   <__stack_chk_fail@plt>
L99:
  leave
  ret
```

assistant: ```c
void process_request(unsigned char *pkg, int *plen, void *sig, int fd) {
  unsigned char *pkg_end = pkg + *plen, *p = pkg;
  *plen = 0;
  while (p != pkg_end) {
    if (*(p++) == '$') {
      if (*p == 1) {
        short tmp = htons(555);
        memcpy(pkg, &tmp, sizeof tmp);
        tmp = htons(((555 + 10000) + 1));
        memcpy(pkg + 2, &tmp, sizeof tmp);
        *plen = 2 * (2 * sizeof tmp);
      } else if (*p == 0) {
        *(char *)sig = 2;
        write(fd, p - 1, 1);
        p++;
      } else if (*p == 2) {
        write(fd, p + 3, 1);
        p += 4;
      } else if (*p == 3) {
        *(p + 2) = ' ';
        write(fd, p + 2, 3);
        p += 5;
      }
    }
  }
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<process_request>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x28,%rsp
  mov    %rdx,0x8(%rsp)
  mov    %ecx,0x4(%rsp)
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  movslq (%rsi),%r12
  add    %rdi,%r12
  movl   $0x0,(%rsi)
  cmp    %r12,%rdi
  je     L139
  mov    %rdi,%r13
  mov    %rsi,%r14
  mov    %rdi,%rbx
  lea    0x16(%rsp),%r15
  jmp    L89
L41:
  movzbl 0x1(%rbx),%eax
  cmp    $0x1,%al
  je     L111
  test   %al,%al
  je     L95
  cmp    $0x2,%al
  je     L78
  cmp    $0x3,%al
  je     L16
  mov    %rbp,%rbx
L38:
  cmp    %r12,%rbx
  je     L139
L89:
  lea    0x1(%rbx),%rbp
  cmpb   $0x24,(%rbx)
  je     L41
  mov    %rbp,%rbx
  jmp    L38
L111:
  mov    $0x22b,%edi
  call   <htons@plt>
  mov    %ax,0x16(%rsp)
  mov    $0x2,%edx
  mov    %r15,%rsi
  mov    %r13,%rdi
  call   <memcpy@plt>
  mov    $0x293c,%edi
  call   <htons@plt>
  mov    %ax,0x16(%rsp)
  lea    0x2(%r13),%rdi
  mov    $0x2,%edx
  mov    %r15,%rsi
  call   <memcpy@plt>
  movl   $0x8,(%r14)
  mov    %rbp,%rbx
  jmp    L38
L95:
  mov    0x8(%rsp),%rax
  movb   $0x2,(%rax)
  mov    $0x1,%edx
  mov    %rbx,%rsi
  mov    0x4(%rsp),%edi
  call   <write@plt>
  add    $0x2,%rbx
  jmp    L38
L78:
  lea    0x4(%rbx),%rsi
  mov    $0x1,%edx
  mov    0x4(%rsp),%edi
  call   <write@plt>
  add    $0x5,%rbx
  jmp    L38
L16:
  movb   $0x20,0x3(%rbx)
  lea    0x3(%rbx),%rsi
  mov    $0x3,%edx
  mov    0x4(%rsp),%edi
  call   <write@plt>
  add    $0x6,%rbx
  jmp    L38
L139:
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L24
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L24:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
void process_request(unsigned char *pkg, int *plen, void *sig, int fd) {
  unsigned char *pkg_end = pkg + *plen, *p = pkg;
  *plen = 0;
  while (p != pkg_end) {
    if (*(p++) == '$') {
      if (*p == 1) {
        short tmp = htons(555);
        memcpy(pkg, &tmp, sizeof tmp);
        tmp = htons(((555 + 10000) + 1));
        memcpy(pkg + 2, &tmp, sizeof tmp);
        *plen = 2 * (2 * sizeof tmp);
      } else if (*p == 0) {
        *(char *)sig = 2;
        write(fd, p - 1, 1);
        p++;
      } else if (*p == 2) {
        write(fd, p + 3, 1);
        p += 4;
      } else if (*p == 3) {
        *(p + 2) = ' ';
        write(fd, p + 2, 3);
        p += 5;
      }
    }
  }
}
```
user: 这段汇编代码用C语言表示是什么样的？

```asm
<process_request>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x28,%rsp
  movslq (%rsi),%r8
  mov    %rdx,(%rsp)
  lea    (%rdi,%r8,1),%r14
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  movl   $0x0,(%rsi)
  cmp    %r14,%rdi
  je     L46
  mov    %rdi,%rbp
  mov    %rsi,%r12
  mov    %ecx,%r13d
  mov    %rdi,%rbx
  lea    0x16(%rsp),%r15
  jmp    L69
  nopl   0x0(%rax,%rax,1)
L127:
  mov    %rcx,%rbx
L96:
  cmp    %r14,%rbx
  je     L46
L69:
  cmpb   $0x24,(%rbx)
  lea    0x1(%rbx),%rcx
  jne    L127
  movzbl 0x1(%rbx),%eax
  cmp    $0x1,%al
  je     L54
  test   %al,%al
  je     L45
  cmp    $0x2,%al
  je     L102
  cmp    $0x3,%al
  jne    L127
  movb   $0x20,0x3(%rbx)
  lea    0x3(%rbx),%rsi
  mov    $0x3,%edx
  mov    %r13d,%edi
  add    $0x6,%rbx
  call   <write@plt>
  cmp    %r14,%rbx
  jne    L69
  nopl   0x0(%rax,%rax,1)
L46:
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L108
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   0x0(%rax,%rax,1)
L45:
  mov    (%rsp),%rax
  mov    %rbx,%rsi
  mov    $0x1,%edx
  mov    %r13d,%edi
  add    $0x2,%rbx
  movb   $0x2,(%rax)
  call   <write@plt>
  jmp    L96
  nopl   0x0(%rax,%rax,1)
L54:
  mov    $0x22b,%edi
  mov    %rcx,0x8(%rsp)
  call   <htons@plt>
  mov    $0x2,%edx
  mov    %r15,%rsi
  mov    %rbp,%rdi
  mov    %ax,0x16(%rsp)
  call   <memcpy@plt>
  mov    $0x293c,%edi
  call   <htons@plt>
  lea    0x2(%rbp),%rdi
  mov    $0x2,%edx
  mov    %r15,%rsi
  mov    %ax,0x16(%rsp)
  call   <memcpy@plt>
  movl   $0x8,(%r12)
  mov    0x8(%rsp),%rbx
  jmp    L96
  cs nopw 0x0(%rax,%rax,1)
L102:
  lea    0x4(%rbx),%rsi
  mov    $0x1,%edx
  mov    %r13d,%edi
  add    $0x5,%rbx
  call   <write@plt>
  jmp    L96
L108:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
void process_request(unsigned char *pkg, int *plen, void *sig, int fd) {
  unsigned char *pkg_end = pkg + *plen, *p = pkg;
  *plen = 0;
  while (p != pkg_end) {
    if (*(p++) == '$') {
      if (*p == 1) {
        short tmp = htons(555);
        memcpy(pkg, &tmp, sizeof tmp);
        tmp = htons(((555 + 10000) + 1));
        memcpy(pkg + 2, &tmp, sizeof tmp);
        *plen = 2 * (2 * sizeof tmp);
      } else if (*p == 0) {
        *(char *)sig = 2;
        write(fd, p - 1, 1);
        p++;
      } else if (*p == 2) {
        write(fd, p + 3, 1);
        p += 4;
      } else if (*p == 3) {
        *(p + 2) = ' ';
        write(fd, p + 2, 3);
        p += 5;
      }
    }
  }
}
```
user: Translate the below assembly code into C programming language:

```asm
<process_request>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x28,%rsp
  movslq (%rsi),%r8
  mov    %rdx,(%rsp)
  lea    (%rdi,%r8,1),%r14
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  movl   $0x0,(%rsi)
  cmp    %r14,%rdi
  je     L58
  mov    %rdi,%rbp
  mov    %rsi,%r12
  mov    %ecx,%r13d
  mov    %rdi,%rbx
  lea    0x16(%rsp),%r15
  jmp    L63
  nopl   0x0(%rax,%rax,1)
L129:
  mov    %rcx,%rbx
L54:
  cmp    %r14,%rbx
  je     L58
L63:
  cmpb   $0x24,(%rbx)
  lea    0x1(%rbx),%rcx
  jne    L129
  movzbl 0x1(%rbx),%eax
  cmp    $0x1,%al
  je     L105
  test   %al,%al
  je     L51
  cmp    $0x2,%al
  je     L15
  cmp    $0x3,%al
  jne    L129
  movb   $0x20,0x3(%rbx)
  lea    0x3(%rbx),%rsi
  mov    $0x3,%edx
  mov    %r13d,%edi
  add    $0x6,%rbx
  call   <write@plt>
  cmp    %r14,%rbx
  jne    L63
  nopl   0x0(%rax,%rax,1)
L58:
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L1
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   0x0(%rax,%rax,1)
L51:
  mov    (%rsp),%rax
  mov    %rbx,%rsi
  mov    $0x1,%edx
  mov    %r13d,%edi
  add    $0x2,%rbx
  movb   $0x2,(%rax)
  call   <write@plt>
  jmp    L54
  nopl   0x0(%rax,%rax,1)
L105:
  mov    $0x22b,%edi
  mov    %rcx,0x8(%rsp)
  call   <htons@plt>
  mov    $0x2,%edx
  mov    %r15,%rsi
  mov    %rbp,%rdi
  mov    %ax,0x16(%rsp)
  call   <memcpy@plt>
  mov    $0x293c,%edi
  call   <htons@plt>
  lea    0x2(%rbp),%rdi
  mov    $0x2,%edx
  mov    %r15,%rsi
  mov    %ax,0x16(%rsp)
  call   <memcpy@plt>
  movl   $0x8,(%r12)
  mov    0x8(%rsp),%rbx
  jmp    L54
  cs nopw 0x0(%rax,%rax,1)
L15:
  lea    0x4(%rbx),%rsi
  mov    $0x1,%edx
  mov    %r13d,%edi
  add    $0x5,%rbx
  call   <write@plt>
  jmp    L54
L1:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
void process_request(unsigned char *pkg, int *plen, void *sig, int fd) {
  unsigned char *pkg_end = pkg + *plen, *p = pkg;
  *plen = 0;
  while (p != pkg_end) {
    if (*(p++) == '$') {
      if (*p == 1) {
        short tmp = htons(555);
        memcpy(pkg, &tmp, sizeof tmp);
        tmp = htons(((555 + 10000) + 1));
        memcpy(pkg + 2, &tmp, sizeof tmp);
        *plen = 2 * (2 * sizeof tmp);
      } else if (*p == 0) {
        *(char *)sig = 2;
        write(fd, p - 1, 1);
        p++;
      } else if (*p == 2) {
        write(fd, p + 3, 1);
        p += 4;
      } else if (*p == 3) {
        *(p + 2) = ' ';
        write(fd, p + 2, 3);
        p += 5;
      }
    }
  }
}
```
user: 这段汇编代码用C语言表示是什么样的？

```asm
<setbits>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %rbx
  sub    $0x28,%rsp
  mov    %edi,-0x24(%rbp)
  mov    %esi,-0x28(%rbp)
  mov    %edx,-0x2c(%rbp)
  mov    %ecx,-0x30(%rbp)
  movl   $0x0,-0x20(%rbp)
  movl   $0x0,-0x1c(%rbp)
  movl   $0x0,-0x18(%rbp)
  movl   $0x0,-0x14(%rbp)
  mov    -0x28(%rbp),%eax
  add    $0x1,%eax
  sub    -0x2c(%rbp),%eax
  mov    -0x24(%rbp),%edx
  mov    %eax,%ecx
  shr    %cl,%edx
  mov    -0x2c(%rbp),%eax
  mov    %eax,%ecx
  shr    %cl,%edx
  mov    -0x2c(%rbp),%eax
  mov    %eax,%ecx
  shl    %cl,%edx
  mov    %edx,%eax
  mov    %eax,-0x20(%rbp)
  mov    -0x30(%rbp),%eax
  mov    -0x2c(%rbp),%edx
  mov    $0x0,%esi
  mov    %eax,%edi
  call   <getbits@plt>
  mov    %eax,-0x1c(%rbp)
  mov    -0x20(%rbp),%eax
  or     -0x1c(%rbp),%eax
  mov    %eax,-0x18(%rbp)
  mov    -0x28(%rbp),%eax
  add    $0x1,%eax
  sub    -0x2c(%rbp),%eax
  mov    -0x18(%rbp),%edx
  mov    %edx,%ebx
  mov    %eax,%ecx
  shl    %cl,%ebx
  mov    -0x28(%rbp),%eax
  add    $0x1,%eax
  sub    -0x2c(%rbp),%eax
  mov    %eax,%edx
  mov    -0x24(%rbp),%eax
  mov    $0x0,%esi
  mov    %eax,%edi
  call   <getbits@plt>
  or     %ebx,%eax
  mov    %eax,-0x14(%rbp)
  mov    -0x14(%rbp),%eax
  mov    -0x8(%rbp),%rbx
  leave
  ret
```

assistant: ```c
unsigned setbits(unsigned x, int p, int n, int y) {
  unsigned x_prim = 0;
  unsigned y_prim = 0;
  unsigned x_sec = 0;
  unsigned x_final = 0;
  x_prim = ((x >> (p + 1 - n)) >> n) << n;
  y_prim = getbits(y, 0, n);
  x_sec = (x_prim | y_prim);
  x_final = ((x_sec << (p + 1 - n)) | getbits(x, 0, (p + 1 - n)));
  return x_final;
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<setbits>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  mov    %edi,%r12d
  mov    %ecx,%edi
  lea    0x1(%rsi),%ebp
  sub    %edx,%ebp
  mov    %r12d,%ebx
  mov    %ebp,%ecx
  shr    %cl,%ebx
  mov    %edx,%ecx
  shr    %cl,%ebx
  shl    %cl,%ebx
  mov    $0x0,%esi
  call   <getbits@plt>
  or     %eax,%ebx
  mov    %ebp,%ecx
  shl    %cl,%ebx
  mov    %ebp,%edx
  mov    $0x0,%esi
  mov    %r12d,%edi
  call   <getbits@plt>
  or     %ebx,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
```

assistant: ```c
unsigned setbits(unsigned x, int p, int n, int y) {
  unsigned x_prim = 0;
  unsigned y_prim = 0;
  unsigned x_sec = 0;
  unsigned x_final = 0;
  x_prim = ((x >> (p + 1 - n)) >> n) << n;
  y_prim = getbits(y, 0, n);
  x_sec = (x_prim | y_prim);
  x_final = ((x_sec << (p + 1 - n)) | getbits(x, 0, (p + 1 - n)));
  return x_final;
}
```
user: What is the c source code of the assembly code below:

```asm
<setbits>:
  endbr64
  push   %r12
  lea    0x1(%rsi),%r12d
  xor    %esi,%esi
  push   %rbp
  sub    %edx,%r12d
  mov    %edi,%ebp
  mov    %ecx,%edi
  push   %rbx
  mov    %r12d,%ecx
  mov    %ebp,%ebx
  shr    %cl,%ebx
  mov    %edx,%ecx
  shr    %cl,%ebx
  shl    %cl,%ebx
  call   <getbits@plt>
  mov    %r12d,%ecx
  mov    %r12d,%edx
  mov    %ebp,%edi
  or     %eax,%ebx
  xor    %esi,%esi
  shl    %cl,%ebx
  call   <getbits@plt>
  or     %ebx,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
```

assistant: ```c
unsigned setbits(unsigned x, int p, int n, int y) {
  unsigned x_prim = 0;
  unsigned y_prim = 0;
  unsigned x_sec = 0;
  unsigned x_final = 0;
  x_prim = ((x >> (p + 1 - n)) >> n) << n;
  y_prim = getbits(y, 0, n);
  x_sec = (x_prim | y_prim);
  x_final = ((x_sec << (p + 1 - n)) | getbits(x, 0, (p + 1 - n)));
  return x_final;
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<setbits>:
  endbr64
  push   %r12
  lea    0x1(%rsi),%r12d
  xor    %esi,%esi
  push   %rbp
  sub    %edx,%r12d
  mov    %edi,%ebp
  mov    %ecx,%edi
  push   %rbx
  mov    %r12d,%ecx
  mov    %ebp,%ebx
  shr    %cl,%ebx
  mov    %edx,%ecx
  shr    %cl,%ebx
  shl    %cl,%ebx
  call   <getbits@plt>
  mov    %r12d,%ecx
  mov    %r12d,%edx
  mov    %ebp,%edi
  or     %eax,%ebx
  xor    %esi,%esi
  shl    %cl,%ebx
  call   <getbits@plt>
  or     %ebx,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
```

assistant: ```c
unsigned setbits(unsigned x, int p, int n, int y) {
  unsigned x_prim = 0;
  unsigned y_prim = 0;
  unsigned x_sec = 0;
  unsigned x_final = 0;
  x_prim = ((x >> (p + 1 - n)) >> n) << n;
  y_prim = getbits(y, 0, n);
  x_sec = (x_prim | y_prim);
  x_final = ((x_sec << (p + 1 - n)) | getbits(x, 0, (p + 1 - n)));
  return x_final;
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<__fill_table>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %rdi,-0x18(%rbp)
  mov    %esi,-0x1c(%rbp)
  mov    %rdx,-0x28(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  mov    %eax,-0x4(%rbp)
  movl   $0x0,-0x8(%rbp)
  jmp    L0
L6:
  mov    -0x8(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rax,%rdx
  mov    -0x4(%rbp),%eax
  mov    %eax,(%rdx)
  addl   $0x1,-0x8(%rbp)
L0:
  mov    -0x8(%rbp),%eax
  cmp    -0x1c(%rbp),%eax
  jl     L6
  movl   $0x0,-0x8(%rbp)
  jmp    L2
L31:
  mov    -0x4(%rbp),%eax
  sub    -0x8(%rbp),%eax
  mov    %eax,%edx
  mov    -0x8(%rbp),%eax
  movslq %eax,%rcx
  mov    -0x28(%rbp),%rax
  add    %rcx,%rax
  movzbl (%rax),%eax
  movsbq %al,%rax
  lea    0x0(,%rax,4),%rcx
  mov    -0x18(%rbp),%rax
  add    %rcx,%rax
  sub    $0x1,%edx
  mov    %edx,(%rax)
  addl   $0x1,-0x8(%rbp)
L2:
  mov    -0x4(%rbp),%eax
  sub    $0x1,%eax
  cmp    %eax,-0x8(%rbp)
  jl     L31
  nop
  nop
  leave
  ret
```

assistant: ```c
void __fill_table(int *shift_table, int size, char *pattern) {
  int i;
  int len = strlen(pattern);
  for (i = 0; i < size; ++i) {
    shift_table[i] = len;
  }
  for (i = 0; i < len - 1; ++i) {
    shift_table[pattern[i]] = len - i - 1;
  }
}
```