ylfeng/ReF-Decompile-dataset huggingface dataset:
user: 请将以下的汇编代码转换成C语言代码：

```asm
<switchValue>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x18(%rbp)
  mov    %esi,-0x1c(%rbp)
  mov    %edx,-0x20(%rbp)
  mov    -0x18(%rbp),%rax
  mov    (%rax),%eax
  cmp    %eax,-0x1c(%rbp)
  jg     L7
  mov    -0x18(%rbp),%rax
  mov    (%rax),%eax
  cmp    %eax,-0x20(%rbp)
  jle    L1
L7:
  mov    $0xffffffff,%eax
  jmp    L9
L1:
  mov    -0x1c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  mov    %eax,-0x4(%rbp)
  mov    -0x20(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    -0x1c(%rbp),%edx
  movslq %edx,%rdx
  lea    0x0(,%rdx,4),%rcx
  mov    -0x18(%rbp),%rdx
  add    %rcx,%rdx
  mov    (%rax),%eax
  mov    %eax,(%rdx)
  mov    -0x20(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rax,%rdx
  mov    -0x4(%rbp),%eax
  mov    %eax,(%rdx)
  mov    -0x20(%rbp),%eax
L9:
  pop    %rbp
  ret
```

assistant: ```c
int switchValue(int tab[], int idx1, int idx2) {
  int tmp;
  if (idx1 > tab[0] || idx2 > tab[0]) {
    return -1;
  }
  tmp = tab[idx1];
  tab[idx1] = tab[idx2];
  tab[idx2] = tmp;
  return idx2;
}
```
user: 请从给定的汇编指令推导出C源代码：

```asm
<switchValue>:
  endbr64
  cmp    %edx,%esi
  mov    %edx,%eax
  cmovge %esi,%eax
  cmp    %eax,(%rdi)
  jl     L6
  movslq %esi,%rsi
  lea    (%rdi,%rsi,4),%rcx
  mov    (%rcx),%esi
  movslq %edx,%rax
  lea    (%rdi,%rax,4),%rax
  mov    (%rax),%edi
  mov    %edi,(%rcx)
  mov    %esi,(%rax)
  mov    %edx,%eax
  ret
L6:
  mov    $0xffffffff,%eax
  ret
```

assistant: ```c
int switchValue(int tab[], int idx1, int idx2) {
  int tmp;
  if (idx1 > tab[0] || idx2 > tab[0]) {
    return -1;
  }
  tmp = tab[idx1];
  tab[idx1] = tab[idx2];
  tab[idx2] = tmp;
  return idx2;
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<switchValue>:
  endbr64
  cmp    %edx,%esi
  mov    %edx,%eax
  cmovge %esi,%eax
  cmp    %eax,(%rdi)
  jl     L0
  movslq %esi,%rsi
  movslq %edx,%rax
  lea    (%rdi,%rsi,4),%rcx
  lea    (%rdi,%rax,4),%rax
  mov    (%rax),%edi
  mov    (%rcx),%esi
  mov    %edi,(%rcx)
  mov    %esi,(%rax)
  mov    %edx,%eax
  ret
  nopl   0x0(%rax,%rax,1)
L0:
  mov    $0xffffffff,%eax
  ret
```

assistant: ```c
int switchValue(int tab[], int idx1, int idx2) {
  int tmp;
  if (idx1 > tab[0] || idx2 > tab[0]) {
    return -1;
  }
  tmp = tab[idx1];
  tab[idx1] = tab[idx2];
  tab[idx2] = tmp;
  return idx2;
}
```
user: What would the C source look like for the assembly code provided here:

```asm
<switchValue>:
  endbr64
  cmp    %edx,%esi
  mov    %edx,%eax
  cmovge %esi,%eax
  cmp    %eax,(%rdi)
  jl     L1
  movslq %esi,%rsi
  movslq %edx,%rax
  lea    (%rdi,%rsi,4),%rcx
  lea    (%rdi,%rax,4),%rax
  mov    (%rax),%edi
  mov    (%rcx),%esi
  mov    %edi,(%rcx)
  mov    %esi,(%rax)
  mov    %edx,%eax
  ret
  nopl   0x0(%rax,%rax,1)
L1:
  mov    $0xffffffff,%eax
  ret
```

assistant: ```c
int switchValue(int tab[], int idx1, int idx2) {
  int tmp;
  if (idx1 > tab[0] || idx2 > tab[0]) {
    return -1;
  }
  tmp = tab[idx1];
  tab[idx1] = tab[idx2];
  tab[idx2] = tmp;
  return idx2;
}
```
user: 这段汇编代码用C语言表示是什么样的：

```asm
<csv_boolean_parameter>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %rdi,-0x18(%rbp)
  mov    %esi,-0x1c(%rbp)
  mov    %rdx,-0x28(%rbp)
  mov    %rcx,-0x30(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  call   <csv_skip_whitespace@plt>
  mov    %rax,-0x28(%rbp)
  mov    -0x1c(%rbp),%edx
  mov    -0x28(%rbp),%rcx
  mov    -0x18(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <strncmp@plt>
  test   %rax,%rax
  je     L7
  mov    $0x0,%eax
  jmp    L0
L7:
  mov    -0x1c(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,%rdi
  call   <csv_skip_whitespace@plt>
  mov    %rax,-0x28(%rbp)
  mov    -0x28(%rbp),%rax
  movzbl (%rax),%eax
  test   %al,%al
  jne    L16
  mov    -0x30(%rbp),%rax
  movl   $0x1,(%rax)
  mov    $0x1,%eax
  jmp    L0
L16:
  mov    -0x28(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x3d,%al
  je     L15
  mov    $0x0,%eax
  jmp    L0
L15:
  mov    -0x28(%rbp),%rax
  add    $0x1,%rax
  mov    %rax,%rdi
  call   <csv_skip_whitespace@plt>
  mov    %rax,-0x28(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  call   <csv_boolean@plt>
  mov    %eax,-0x4(%rbp)
  cmpl   $0x0,-0x4(%rbp)
  js     L49
  mov    -0x30(%rbp),%rax
  mov    -0x4(%rbp),%edx
  mov    %edx,(%rax)
  mov    $0x1,%eax
  jmp    L0
L49:
  mov    $0x0,%eax
L0:
  leave
  ret
```

assistant: ```c
int csv_boolean_parameter(const char *zTag, int nTag, const char *z, int *pValue) {
  int b;
  z = csv_skip_whitespace(z);
  if (strncmp(zTag, z, nTag) != 0)
    return 0;
  z = csv_skip_whitespace(z + nTag);
  if (z[0] == 0) {
    *pValue = 1;
    return 1;
  }
  if (z[0] != '=')
    return 0;
  z = csv_skip_whitespace(z + 1);
  b = csv_boolean(z);
  if (b >= 0) {
    *pValue = b;
    return 1;
  }
  return 0;
}
```
user: 这段汇编代码用C语言表示是什么样的：

```asm
<csv_boolean_parameter>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    %rdi,%rbp
  mov    %esi,%r12d
  mov    %rdx,%rdi
  mov    %rcx,%r13
  call   <csv_skip_whitespace@plt>
  mov    %rax,%rbx
  mov    %r12d,%edx
  mov    %rax,%rsi
  mov    %rbp,%rdi
  call   <strncmp@plt>
  mov    %rax,%rdx
  mov    $0x0,%eax
  test   %rdx,%rdx
  je     L30
L24:
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L30:
  movslq %r12d,%r12
  lea    (%rbx,%r12,1),%rdi
  call   <csv_skip_whitespace@plt>
  mov    %rax,%rdi
  movzbl (%rax),%edx
  test   %dl,%dl
  je     L0
  mov    $0x0,%eax
  cmp    $0x3d,%dl
  jne    L24
  add    $0x1,%rdi
  call   <csv_skip_whitespace@plt>
  mov    %rax,%rdi
  call   <csv_boolean@plt>
  mov    %eax,%edx
  mov    $0x0,%eax
  test   %edx,%edx
  js     L24
  mov    %edx,0x0(%r13)
  mov    $0x1,%eax
  jmp    L24
L0:
  movl   $0x1,0x0(%r13)
  mov    $0x1,%eax
  jmp    L24
```

assistant: ```c
int csv_boolean_parameter(const char *zTag, int nTag, const char *z, int *pValue) {
  int b;
  z = csv_skip_whitespace(z);
  if (strncmp(zTag, z, nTag) != 0)
    return 0;
  z = csv_skip_whitespace(z + nTag);
  if (z[0] == 0) {
    *pValue = 1;
    return 1;
  }
  if (z[0] != '=')
    return 0;
  z = csv_skip_whitespace(z + 1);
  b = csv_boolean(z);
  if (b >= 0) {
    *pValue = b;
    return 1;
  }
  return 0;
}
```
user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<csv_boolean_parameter>:
  endbr64
  push   %r13
  mov    %rcx,%r13
  push   %r12
  mov    %rdi,%r12
  mov    %rdx,%rdi
  push   %rbp
  movslq %esi,%rbp
  push   %rbx
  sub    $0x8,%rsp
  call   <csv_skip_whitespace@plt>
  mov    %ebp,%edx
  mov    %r12,%rdi
  mov    %rax,%rsi
  mov    %rax,%rbx
  call   <strncmp@plt>
  test   %rax,%rax
  je     L14
L25:
  xor    %eax,%eax
L26:
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopl   0x0(%rax)
L14:
  lea    (%rbx,%rbp,1),%rdi
  call   <csv_skip_whitespace@plt>
  movzbl (%rax),%edx
  test   %dl,%dl
  je     L28
  cmp    $0x3d,%dl
  jne    L25
  lea    0x1(%rax),%rdi
  call   <csv_skip_whitespace@plt>
  mov    %rax,%rdi
  call   <csv_boolean@plt>
  test   %eax,%eax
  js     L25
  mov    %eax,0x0(%r13)
  mov    $0x1,%eax
  jmp    L26
  nopl   (%rax)
L28:
  movl   $0x1,0x0(%r13)
  add    $0x8,%rsp
  mov    $0x1,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
```

assistant: ```c
int csv_boolean_parameter(const char *zTag, int nTag, const char *z, int *pValue) {
  int b;
  z = csv_skip_whitespace(z);
  if (strncmp(zTag, z, nTag) != 0)
    return 0;
  z = csv_skip_whitespace(z + nTag);
  if (z[0] == 0) {
    *pValue = 1;
    return 1;
  }
  if (z[0] != '=')
    return 0;
  z = csv_skip_whitespace(z + 1);
  b = csv_boolean(z);
  if (b >= 0) {
    *pValue = b;
    return 1;
  }
  return 0;
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<csv_boolean_parameter>:
  endbr64
  push   %r13
  mov    %rcx,%r13
  push   %r12
  mov    %rdi,%r12
  mov    %rdx,%rdi
  push   %rbp
  movslq %esi,%rbp
  push   %rbx
  sub    $0x8,%rsp
  call   <csv_skip_whitespace@plt>
  mov    %ebp,%edx
  mov    %r12,%rdi
  mov    %rax,%rsi
  mov    %rax,%rbx
  call   <strncmp@plt>
  test   %rax,%rax
  je     L0
L10:
  xor    %eax,%eax
L13:
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopl   0x0(%rax)
L0:
  lea    (%rbx,%rbp,1),%rdi
  call   <csv_skip_whitespace@plt>
  movzbl (%rax),%edx
  test   %dl,%dl
  je     L6
  cmp    $0x3d,%dl
  jne    L10
  lea    0x1(%rax),%rdi
  call   <csv_skip_whitespace@plt>
  mov    %rax,%rdi
  call   <csv_boolean@plt>
  test   %eax,%eax
  js     L10
  mov    %eax,0x0(%r13)
  mov    $0x1,%eax
  jmp    L13
  nopl   (%rax)
L6:
  movl   $0x1,0x0(%r13)
  add    $0x8,%rsp
  mov    $0x1,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
```

assistant: ```c
int csv_boolean_parameter(const char *zTag, int nTag, const char *z, int *pValue) {
  int b;
  z = csv_skip_whitespace(z);
  if (strncmp(zTag, z, nTag) != 0)
    return 0;
  z = csv_skip_whitespace(z + nTag);
  if (z[0] == 0) {
    *pValue = 1;
    return 1;
  }
  if (z[0] != '=')
    return 0;
  z = csv_skip_whitespace(z + 1);
  b = csv_boolean(z);
  if (b >= 0) {
    *pValue = b;
    return 1;
  }
  return 0;
}
```
user: Translate the below assembly code into C programming language:

```asm
<chk_sum>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x18(%rbp)
  movl   $0x2,-0x8(%rbp)
  mov    -0x18(%rbp),%rax
  add    $0x1,%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  mov    %eax,-0x4(%rbp)
  jmp    L17
L16:
  mov    -0x8(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  xor    %eax,-0x4(%rbp)
  addl   $0x1,-0x8(%rbp)
L17:
  mov    -0x8(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  cmp    $0x2a,%al
  jne    L16
  mov    -0x4(%rbp),%eax
  cltd
  shr    $0x10,%edx
  add    %edx,%eax
  movzwl %ax,%eax
  sub    %edx,%eax
  mov    %eax,-0x4(%rbp)
  mov    -0x4(%rbp),%eax
  pop    %rbp
  ret
```

assistant: ```c
int chk_sum(char sen[]) {
  int i, xor;
  for (i = 2, xor = sen[1]; sen[i] != '*'; i++) {
    xor ^= sen[i];
  }
  xor %= 65536;
  return xor;
}
```
user: What is the c source code of the assembly code below:

```asm
<chk_sum>:
  endbr64
  movsbl 0x1(%rdi),%edx
  movzbl 0x2(%rdi),%eax
  cmp    $0x2a,%al
  je     L0
  add    $0x3,%rdi
L1:
  movsbl %al,%eax
  xor    %eax,%edx
  add    $0x1,%rdi
  movzbl -0x1(%rdi),%eax
  cmp    $0x2a,%al
  jne    L1
L0:
  mov    %edx,%ecx
  sar    $0x1f,%ecx
  shr    $0x10,%ecx
  lea    (%rdx,%rcx,1),%eax
  movzwl %ax,%eax
  sub    %ecx,%eax
  ret
```

assistant: ```c
int chk_sum(char sen[]) {
  int i, xor;
  for (i = 2, xor = sen[1]; sen[i] != '*'; i++) {
    xor ^= sen[i];
  }
  xor %= 65536;
  return xor;
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<chk_sum>:
  endbr64
  movsbl 0x2(%rdi),%eax
  movsbl 0x1(%rdi),%edx
  cmp    $0x2a,%al
  je     L3
  add    $0x3,%rdi
  nopl   0x0(%rax)
L18:
  add    $0x1,%rdi
  xor    %eax,%edx
  movsbl -0x1(%rdi),%eax
  cmp    $0x2a,%al
  jne    L18
L3:
  mov    %edx,%ecx
  sar    $0x1f,%ecx
  shr    $0x10,%ecx
  lea    (%rdx,%rcx,1),%eax
  movzwl %ax,%eax
  sub    %ecx,%eax
  ret
```

assistant: ```c
int chk_sum(char sen[]) {
  int i, xor;
  for (i = 2, xor = sen[1]; sen[i] != '*'; i++) {
    xor ^= sen[i];
  }
  xor %= 65536;
  return xor;
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<chk_sum>:
  endbr64
  movsbl 0x2(%rdi),%eax
  movsbl 0x1(%rdi),%edx
  cmp    $0x2a,%al
  je     L9
  add    $0x3,%rdi
  nopl   0x0(%rax)
L18:
  add    $0x1,%rdi
  xor    %eax,%edx
  movsbl -0x1(%rdi),%eax
  cmp    $0x2a,%al
  jne    L18
L9:
  mov    %edx,%ecx
  sar    $0x1f,%ecx
  shr    $0x10,%ecx
  lea    (%rdx,%rcx,1),%eax
  movzwl %ax,%eax
  sub    %ecx,%eax
  ret
```

assistant: ```c
int chk_sum(char sen[]) {
  int i, xor;
  for (i = 2, xor = sen[1]; sen[i] != '*'; i++) {
    xor ^= sen[i];
  }
  xor %= 65536;
  return xor;
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<negotiate>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %edi,-0x14(%rbp)
  mov    %rsi,-0x20(%rbp)
  mov    %edx,-0x18(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  mov    -0x20(%rbp),%rax
  add    $0x1,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  cmp    $0xfe,%eax
  jg     L70
  cmp    $0xfb,%eax
  jge    L126
  jmp    L161
L70:
  cmp    $0xff,%eax
  jne    L161
  mov    $0x0,%eax
  jmp    L18
L126:
  movb   $0xff,-0x9(%rbp)
  mov    D16(%rip),%rax
  mov    (%rax),%edx
  lea    -0x9(%rbp),%rsi
  mov    -0x14(%rbp),%eax
  mov    %edx,%ecx
  mov    $0x1,%edx
  mov    %eax,%edi
  call   <send@plt>
  mov    -0x20(%rbp),%rax
  add    $0x1,%rax
  movzbl (%rax),%eax
  cmp    $0xfc,%al
  jne    L27
  movb   $0xfe,-0x9(%rbp)
  jmp    L76
L27:
  mov    -0x20(%rbp),%rax
  add    $0x1,%rax
  movzbl (%rax),%eax
  cmp    $0xfe,%al
  jne    L85
  movb   $0xfc,-0x9(%rbp)
  jmp    L76
L85:
  mov    -0x20(%rbp),%rax
  add    $0x1,%rax
  movzbl (%rax),%eax
  cmp    $0x3,%al
  jne    L38
  mov    -0x20(%rbp),%rax
  add    $0x1,%rax
  movzbl (%rax),%eax
  cmp    $0xfd,%al
  jne    L103
  mov    $0xfffffffb,%eax
  jmp    L35
L103:
  mov    $0xfffffffd,%eax
L35:
  mov    %al,-0x9(%rbp)
  jmp    L76
L38:
  mov    -0x20(%rbp),%rax
  add    $0x1,%rax
  movzbl (%rax),%eax
  cmp    $0xfd,%al
  jne    L75
  mov    $0xfffffffc,%eax
  jmp    L84
L75:
  mov    $0xfffffffe,%eax
L84:
  mov    %al,-0x9(%rbp)
L76:
  mov    D16(%rip),%rax
  mov    (%rax),%edx
  lea    -0x9(%rbp),%rsi
  mov    -0x14(%rbp),%eax
  mov    %edx,%ecx
  mov    $0x1,%edx
  mov    %eax,%edi
  call   <send@plt>
  mov    D16(%rip),%rax
  mov    (%rax),%edx
  mov    -0x20(%rbp),%rax
  lea    0x2(%rax),%rsi
  mov    -0x14(%rbp),%eax
  mov    %edx,%ecx
  mov    $0x1,%edx
  mov    %eax,%edi
  call   <send@plt>
  jmp    L87
L161:
  nop
L87:
  mov    $0x0,%eax
L18:
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L157
  call   <__stack_chk_fail@plt>
L157:
  leave
  ret
```

assistant: ```c
int negotiate(int sock, unsigned char *buf, int len) {
  unsigned char c;
  switch (buf[1]) {
  case 255:
    return 0;
  case 251:
  case 252:
  case 253:
  case 254:
    c = 255;
    send(sock, &c, 1, MSG_NOSIGNAL);
    if (252 == buf[1])
      c = 254;
    else if (254 == buf[1])
      c = 252;
    else if (3 == buf[1])
      c = (buf[1] == 253 ? 251 : 253);
    else
      c = (buf[1] == 253 ? 252 : 254);
    send(sock, &c, 1, MSG_NOSIGNAL);
    send(sock, &(buf[2]), 1, MSG_NOSIGNAL);
    break;
  default:
    break;
  }
  return 0;
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<negotiate>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x10,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  movzbl 0x1(%rsi),%eax
  add    $0x5,%eax
  cmp    $0x3,%al
  jbe    L58
L38:
  mov    0x8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L30
  mov    $0x0,%eax
  add    $0x10,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
L58:
  mov    %edi,%ebp
  mov    %rsi,%rbx
  movb   $0xff,0x7(%rsp)
  lea    0x7(%rsp),%rsi
  mov    D0(%rip),%rax
  mov    (%rax),%ecx
  mov    $0x1,%edx
  call   <send@plt>
  movzbl 0x1(%rbx),%edx
  mov    $0xfffffffe,%eax
  cmp    $0xfc,%dl
  je     L50
  mov    $0xfffffffc,%eax
  cmp    $0xfe,%dl
  je     L50
  mov    $0xfffffffd,%eax
  cmp    $0x3,%dl
  je     L50
  cmp    $0xfd,%dl
  setne  %al
  lea    -0x4(%rax,%rax,1),%eax
L50:
  mov    %al,0x7(%rsp)
  mov    D0(%rip),%r12
  lea    0x7(%rsp),%rsi
  mov    (%r12),%ecx
  mov    $0x1,%edx
  mov    %ebp,%edi
  call   <send@plt>
  lea    0x2(%rbx),%rsi
  mov    (%r12),%ecx
  mov    $0x1,%edx
  mov    %ebp,%edi
  call   <send@plt>
  jmp    L38
L30:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int negotiate(int sock, unsigned char *buf, int len) {
  unsigned char c;
  switch (buf[1]) {
  case 255:
    return 0;
  case 251:
  case 252:
  case 253:
  case 254:
    c = 255;
    send(sock, &c, 1, MSG_NOSIGNAL);
    if (252 == buf[1])
      c = 254;
    else if (254 == buf[1])
      c = 252;
    else if (3 == buf[1])
      c = (buf[1] == 253 ? 251 : 253);
    else
      c = (buf[1] == 253 ? 252 : 254);
    send(sock, &c, 1, MSG_NOSIGNAL);
    send(sock, &(buf[2]), 1, MSG_NOSIGNAL);
    break;
  default:
    break;
  }
  return 0;
}
```
user: Translate the below assembly code into C programming language:

```asm
<negotiate>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x18,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  movzbl 0x1(%rsi),%eax
  add    $0x5,%eax
  cmp    $0x3,%al
  jbe    L15
L27:
  mov    0x8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L16
  add    $0x18,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopw   0x0(%rax,%rax,1)
L15:
  lea    0x7(%rsp),%r13
  mov    %rsi,%rbx
  mov    $0x1,%edx
  mov    %edi,%ebp
  mov    D3(%rip),%r12
  mov    %r13,%rsi
  movb   $0xff,0x7(%rsp)
  mov    (%r12),%ecx
  call   <send@plt>
  movzbl 0x1(%rbx),%edx
  mov    $0xfffffffe,%eax
  cmp    $0xfc,%dl
  je     L49
  mov    $0xfffffffc,%eax
  cmp    $0xfe,%dl
  je     L49
  mov    $0xfffffffd,%eax
  cmp    $0x3,%dl
  je     L49
  cmp    $0xfd,%dl
  setne  %al
  lea    -0x4(%rax,%rax,1),%eax
L49:
  mov    (%r12),%ecx
  mov    %r13,%rsi
  mov    %ebp,%edi
  mov    $0x1,%edx
  mov    %al,0x7(%rsp)
  call   <send@plt>
  mov    (%r12),%ecx
  lea    0x2(%rbx),%rsi
  mov    %ebp,%edi
  mov    $0x1,%edx
  call   <send@plt>
  jmp    L27
L16:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int negotiate(int sock, unsigned char *buf, int len) {
  unsigned char c;
  switch (buf[1]) {
  case 255:
    return 0;
  case 251:
  case 252:
  case 253:
  case 254:
    c = 255;
    send(sock, &c, 1, MSG_NOSIGNAL);
    if (252 == buf[1])
      c = 254;
    else if (254 == buf[1])
      c = 252;
    else if (3 == buf[1])
      c = (buf[1] == 253 ? 251 : 253);
    else
      c = (buf[1] == 253 ? 252 : 254);
    send(sock, &c, 1, MSG_NOSIGNAL);
    send(sock, &(buf[2]), 1, MSG_NOSIGNAL);
    break;
  default:
    break;
  }
  return 0;
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<negotiate>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x18,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  movzbl 0x1(%rsi),%eax
  add    $0x5,%eax
  cmp    $0x3,%al
  jbe    L44
L52:
  mov    0x8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L59
  add    $0x18,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopw   0x0(%rax,%rax,1)
L44:
  lea    0x7(%rsp),%r13
  mov    %rsi,%rbx
  mov    $0x1,%edx
  mov    %edi,%ebp
  mov    D4(%rip),%r12
  mov    %r13,%rsi
  movb   $0xff,0x7(%rsp)
  mov    (%r12),%ecx
  call   <send@plt>
  movzbl 0x1(%rbx),%edx
  mov    $0xfffffffe,%eax
  cmp    $0xfc,%dl
  je     L37
  mov    $0xfffffffc,%eax
  cmp    $0xfe,%dl
  je     L37
  mov    $0xfffffffd,%eax
  cmp    $0x3,%dl
  je     L37
  cmp    $0xfd,%dl
  setne  %al
  lea    -0x4(%rax,%rax,1),%eax
L37:
  mov    (%r12),%ecx
  mov    %r13,%rsi
  mov    %ebp,%edi
  mov    $0x1,%edx
  mov    %al,0x7(%rsp)
  call   <send@plt>
  mov    (%r12),%ecx
  lea    0x2(%rbx),%rsi
  mov    %ebp,%edi
  mov    $0x1,%edx
  call   <send@plt>
  jmp    L52
L59:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int negotiate(int sock, unsigned char *buf, int len) {
  unsigned char c;
  switch (buf[1]) {
  case 255:
    return 0;
  case 251:
  case 252:
  case 253:
  case 254:
    c = 255;
    send(sock, &c, 1, MSG_NOSIGNAL);
    if (252 == buf[1])
      c = 254;
    else if (254 == buf[1])
      c = 252;
    else if (3 == buf[1])
      c = (buf[1] == 253 ? 251 : 253);
    else
      c = (buf[1] == 253 ? 252 : 254);
    send(sock, &c, 1, MSG_NOSIGNAL);
    send(sock, &(buf[2]), 1, MSG_NOSIGNAL);
    break;
  default:
    break;
  }
  return 0;
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<select4>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x8(%rbp)
  mov    %esi,-0xc(%rbp)
  cmpl   $0x3,-0xc(%rbp)
  je     L80
  cmpl   $0x3,-0xc(%rbp)
  ja     L24
  cmpl   $0x2,-0xc(%rbp)
  je     L99
  cmpl   $0x2,-0xc(%rbp)
  ja     L24
  cmpl   $0x0,-0xc(%rbp)
  je     L94
  cmpl   $0x1,-0xc(%rbp)
  je     L37
  jmp    L24
L94:
  mov    -0x8(%rbp),%rax
  movss  (%rax),%xmm0
  jmp    L53
L37:
  mov    -0x8(%rbp),%rax
  add    $0x4,%rax
  movss  (%rax),%xmm0
  jmp    L53
L99:
  mov    -0x8(%rbp),%rax
  add    $0x8,%rax
  movss  (%rax),%xmm0
  jmp    L53
L80:
  mov    -0x8(%rbp),%rax
  add    $0xc,%rax
  movss  (%rax),%xmm0
  jmp    L53
L24:
  movss  D4(%rip),%xmm0
L53:
  pop    %rbp
  ret
```

tool_calls: name: disassemble_data
arguments: label: D4
datatype: byte[4]

tool: {"D4": [0x00,0x00,0x80,0xbf]}

assistant: ```c
float select4(const float *src, unsigned int control) {
  switch (control) {
  case 0:
    return src[0];
  case 1:
    return src[1];
  case 2:
    return src[2];
  case 3:
    return src[3];
  }
  return -1;
}
```
user: 这段汇编代码用C语言表示是什么样的?

```asm
<select4>:
  endbr64
  cmp    $0x2,%esi
  je     L15
  ja     L24
  test   %esi,%esi
  je     L33
  movss  0x4(%rdi),%xmm0
  ret
L24:
  cmp    $0x3,%esi
  jne    L36
  movss  0xc(%rdi),%xmm0
  ret
L36:
  movss  D1(%rip),%xmm0
  ret
L33:
  movss  (%rdi),%xmm0
  ret
L15:
  movss  0x8(%rdi),%xmm0
  ret
```

tool_calls: name: disassemble_data
arguments: tag: D1
data_type: byte[4]

tool: {"D1": [0x00,0x00,0x80,0xbf]}

assistant: ```c
float select4(const float *src, unsigned int control) {
  switch (control) {
  case 0:
    return src[0];
  case 1:
    return src[1];
  case 2:
    return src[2];
  case 3:
    return src[3];
  }
  return -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
<select4>:
  endbr64
  cmp    $0x2,%esi
  je     L4
  ja     L0
  test   %esi,%esi
  je     L35
  movss  0x4(%rdi),%xmm0
  ret
  nopl   (%rax)
L0:
  cmp    $0x3,%esi
  jne    L1
  movss  0xc(%rdi),%xmm0
  ret
  nopl   0x0(%rax,%rax,1)
L1:
  movss  D2(%rip),%xmm0
  ret
  nopl   0x0(%rax)
L35:
  movss  (%rdi),%xmm0
  ret
  nopl   (%rax)
L4:
  movss  0x8(%rdi),%xmm0
  ret
```

tool_calls: name: extract_symbolic_data
arguments: data_label: D2
data_type: byte[4]

tool: {"D2": [0x00,0x00,0x80,0xbf]}

assistant: ```c
float select4(const float *src, unsigned int control) {
  switch (control) {
  case 0:
    return src[0];
  case 1:
    return src[1];
  case 2:
    return src[2];
  case 3:
    return src[3];
  }
  return -1;
}
```
user: 请从给定的汇编指令推导出C源代码：

```asm
<select4>:
  endbr64
  cmp    $0x2,%esi
  je     L8
  ja     L26
  test   %esi,%esi
  je     L28
  movss  0x4(%rdi),%xmm0
  ret
  nopl   (%rax)
L26:
  cmp    $0x3,%esi
  jne    L35
  movss  0xc(%rdi),%xmm0
  ret
  nopl   0x0(%rax,%rax,1)
L35:
  movss  D9(%rip),%xmm0
  ret
  nopl   0x0(%rax)
L28:
  movss  (%rdi),%xmm0
  ret
  nopl   (%rax)
L8:
  movss  0x8(%rdi),%xmm0
  ret
```

tool_calls: name: unpack_data
arguments: tag: D9
type: byte[4]

tool: {"D9": [0x00,0x00,0x80,0xbf]}

assistant: ```c
float select4(const float *src, unsigned int control) {
  switch (control) {
  case 0:
    return src[0];
  case 1:
    return src[1];
  case 2:
    return src[2];
  case 3:
    return src[3];
  }
  return -1;
}
```
user: 这段汇编代码用C语言表示是什么样的?

```asm
<testTortureExecute>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    $0x9,%edi
  call   <utest@plt>
  mov    $0x0,%edi
  call   <utest@plt>
  mov    $0x9,%edi
  call   <stest@plt>
  mov    $0x0,%edi
  call   <stest@plt>
  nop
  pop    %rbp
  ret
```

assistant: ```c
void testTortureExecute(void) {
  utest(9);
  utest(0);
  stest(9);
  stest(0);
  return;
}
```
user: What is the c source code of the assembly code below?

```asm
<testTortureExecute>:
  endbr64
  sub    $0x8,%rsp
  mov    $0x9,%edi
  call   <utest@plt>
  mov    $0x0,%edi
  call   <utest@plt>
  mov    $0x9,%edi
  call   <stest@plt>
  mov    $0x0,%edi
  call   <stest@plt>
  add    $0x8,%rsp
  ret
```

assistant: ```c
void testTortureExecute(void) {
  utest(9);
  utest(0);
  stest(9);
  stest(0);
  return;
}
```