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

```asm
<ft_strstr>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x18(%rbp)
  mov    %rsi,-0x20(%rbp)
  movq   $0x0,-0x10(%rbp)
  cmpq   $0x0,-0x20(%rbp)
  je     L36
  mov    -0x20(%rbp),%rax
  movzbl (%rax),%eax
  test   %al,%al
  jne    L72
L36:
  mov    -0x18(%rbp),%rax
  jmp    L9
L41:
  movq   $0x0,-0x8(%rbp)
  mov    -0x18(%rbp),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%edx
  mov    -0x20(%rbp),%rcx
  mov    -0x8(%rbp),%rax
  add    %rcx,%rax
  movzbl (%rax),%eax
  cmp    %al,%dl
  jne    L3
  jmp    L77
L11:
  mov    -0x10(%rbp),%rdx
  mov    -0x8(%rbp),%rax
  add    %rax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%edx
  mov    -0x20(%rbp),%rcx
  mov    -0x8(%rbp),%rax
  add    %rcx,%rax
  movzbl (%rax),%eax
  cmp    %al,%dl
  jne    L90
  addq   $0x1,-0x8(%rbp)
L77:
  mov    -0x20(%rbp),%rdx
  mov    -0x8(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  test   %al,%al
  jne    L11
  jmp    L26
L90:
  nop
L26:
  mov    -0x20(%rbp),%rdx
  mov    -0x8(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  test   %al,%al
  jne    L3
  mov    -0x18(%rbp),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  jmp    L9
L3:
  addq   $0x1,-0x10(%rbp)
L72:
  mov    -0x18(%rbp),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  test   %al,%al
  jne    L41
  mov    $0x0,%eax
L9:
  pop    %rbp
  ret
```

assistant: ```c
char *ft_strstr(const char *s1, const char *s2) {
  size_t i;
  size_t j;
  i = 0;
  if (!s2 || !s2[0])
    return ((char *)s1);
  while (s1[i]) {
    j = 0;
    if (s1[i] == s2[j]) {
      while (s2[j]) {
        if (s1[i + j] == s2[j])
          j++;
        else
          break;
      }
      if (!s2[j])
        return ((char *)&(s1[i]));
    }
    i++;
  }
  return (NULL);
}
```
user: 这段汇编代码用C语言表示是什么样的？

```asm
<ft_strstr>:
  endbr64
  mov    %rdi,%rax
  test   %rsi,%rsi
  je     L6
  movzbl (%rsi),%edi
  test   %dil,%dil
  je     L6
  movzbl (%rax),%edx
  test   %dl,%dl
  jne    L3
  mov    $0x0,%eax
L6:
  ret
L49:
  test   %cl,%cl
  je     L6
L72:
  add    $0x1,%rax
  movzbl (%rax),%edx
  test   %dl,%dl
  je     L14
L3:
  cmp    %dl,%dil
  jne    L72
  mov    %edi,%ecx
  mov    $0x0,%edx
L13:
  cmp    %cl,(%rax,%rdx,1)
  jne    L49
  add    $0x1,%rdx
  movzbl (%rsi,%rdx,1),%ecx
  test   %cl,%cl
  jne    L13
  ret
L14:
  mov    $0x0,%eax
  ret
```

assistant: ```c
char *ft_strstr(const char *s1, const char *s2) {
  size_t i;
  size_t j;
  i = 0;
  if (!s2 || !s2[0])
    return ((char *)s1);
  while (s1[i]) {
    j = 0;
    if (s1[i] == s2[j]) {
      while (s2[j]) {
        if (s1[i + j] == s2[j])
          j++;
        else
          break;
      }
      if (!s2[j])
        return ((char *)&(s1[i]));
    }
    i++;
  }
  return (NULL);
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<ft_strstr>:
  endbr64
  mov    %rdi,%rax
  test   %rsi,%rsi
  je     L50
  movzbl (%rsi),%edi
  test   %dil,%dil
  jne    L17
  jmp    L50
  cs nopw 0x0(%rax,%rax,1)
L35:
  add    $0x1,%rax
L17:
  movzbl (%rax),%edx
  test   %dl,%dl
  je     L32
  cmp    %dl,%dil
  jne    L35
  mov    %edi,%ecx
  xor    %edx,%edx
  nopl   0x0(%rax)
L1:
  cmp    %cl,(%rax,%rdx,1)
  jne    L35
  add    $0x1,%rdx
  movzbl (%rsi,%rdx,1),%ecx
  test   %cl,%cl
  jne    L1
  ret
  nopw   0x0(%rax,%rax,1)
L32:
  xor    %eax,%eax
L50:
  ret
```

assistant: ```c
char *ft_strstr(const char *s1, const char *s2) {
  size_t i;
  size_t j;
  i = 0;
  if (!s2 || !s2[0])
    return ((char *)s1);
  while (s1[i]) {
    j = 0;
    if (s1[i] == s2[j]) {
      while (s2[j]) {
        if (s1[i + j] == s2[j])
          j++;
        else
          break;
      }
      if (!s2[j])
        return ((char *)&(s1[i]));
    }
    i++;
  }
  return (NULL);
}
```
user: 请从给定的汇编指令推导出C源代码:

```asm
<ft_strstr>:
  endbr64
  mov    %rdi,%rax
  test   %rsi,%rsi
  je     L16
  movzbl (%rsi),%edi
  test   %dil,%dil
  jne    L19
  jmp    L16
  cs nopw 0x0(%rax,%rax,1)
L1:
  add    $0x1,%rax
L19:
  movzbl (%rax),%edx
  test   %dl,%dl
  je     L18
  cmp    %dl,%dil
  jne    L1
  mov    %edi,%ecx
  xor    %edx,%edx
  nopl   0x0(%rax)
L11:
  cmp    %cl,(%rax,%rdx,1)
  jne    L1
  add    $0x1,%rdx
  movzbl (%rsi,%rdx,1),%ecx
  test   %cl,%cl
  jne    L11
  ret
  nopw   0x0(%rax,%rax,1)
L18:
  xor    %eax,%eax
L16:
  ret
```

assistant: ```c
char *ft_strstr(const char *s1, const char *s2) {
  size_t i;
  size_t j;
  i = 0;
  if (!s2 || !s2[0])
    return ((char *)s1);
  while (s1[i]) {
    j = 0;
    if (s1[i] == s2[j]) {
      while (s2[j]) {
        if (s1[i + j] == s2[j])
          j++;
        else
          break;
      }
      if (!s2[j])
        return ((char *)&(s1[i]));
    }
    i++;
  }
  return (NULL);
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<trim_trailing_space>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x18(%rbp)
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  mov    %eax,-0x4(%rbp)
  mov    -0x4(%rbp),%eax
  sub    $0x1,%eax
  mov    %eax,-0x8(%rbp)
  jmp    L1
L35:
  mov    -0x8(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  cmp    $0x20,%al
  jne    L29
  mov    -0x8(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movb   $0x0,(%rax)
  subl   $0x1,-0x8(%rbp)
L1:
  cmpl   $0x0,-0x8(%rbp)
  jg     L35
  jmp    L9
L29:
  nop
L9:
  nop
  leave
  ret
```

assistant: ```c
void trim_trailing_space(char *s) {
  int i, n = strlen(s);
  for (i = n - 1; i > 0; i--) {
    if (s[i] == ' ') {
      s[i] = '\0';
    } else {
      break;
    }
  }
}
```
user: 请从给定的汇编指令推导出C源代码：

```asm
<trim_trailing_space>:
  endbr64
  push   %rbx
  mov    %rdi,%rbx
  call   <strlen@plt>
  lea    -0x1(%rax),%edx
  test   %edx,%edx
  jle    L22
  mov    %eax,%ecx
  movslq %edx,%rdx
  add    %rbx,%rdx
  cltq
  lea    -0x2(%rbx,%rax,1),%rax
  lea    -0x2(%rcx),%ecx
  sub    %rcx,%rax
L16:
  cmpb   $0x20,(%rdx)
  jne    L22
  movb   $0x0,(%rdx)
  sub    $0x1,%rdx
  cmp    %rax,%rdx
  jne    L16
L22:
  pop    %rbx
  ret
```

assistant: ```c
void trim_trailing_space(char *s) {
  int i, n = strlen(s);
  for (i = n - 1; i > 0; i--) {
    if (s[i] == ' ') {
      s[i] = '\0';
    } else {
      break;
    }
  }
}
```
user: Translate the below assembly code into C programming language:

```asm
<trim_trailing_space>:
  endbr64
  push   %rbx
  mov    %rdi,%rbx
  call   <strlen@plt>
  lea    -0x1(%rax),%edx
  test   %edx,%edx
  jle    L18
  mov    %eax,%ecx
  cltq
  movslq %edx,%rdx
  lea    -0x2(%rbx,%rax,1),%rax
  sub    $0x2,%ecx
  add    %rbx,%rdx
  sub    %rcx,%rax
  jmp    L33
  nopl   0x0(%rax,%rax,1)
L8:
  movb   $0x0,(%rdx)
  sub    $0x1,%rdx
  cmp    %rax,%rdx
  je     L18
L33:
  cmpb   $0x20,(%rdx)
  je     L8
L18:
  pop    %rbx
  ret
```

assistant: ```c
void trim_trailing_space(char *s) {
  int i, n = strlen(s);
  for (i = n - 1; i > 0; i--) {
    if (s[i] == ' ') {
      s[i] = '\0';
    } else {
      break;
    }
  }
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<trim_trailing_space>:
  endbr64
  push   %rbx
  mov    %rdi,%rbx
  call   <strlen@plt>
  lea    -0x1(%rax),%edx
  test   %edx,%edx
  jle    L23
  mov    %eax,%ecx
  cltq
  movslq %edx,%rdx
  lea    -0x2(%rbx,%rax,1),%rax
  sub    $0x2,%ecx
  add    %rbx,%rdx
  sub    %rcx,%rax
  jmp    L30
  nopl   0x0(%rax,%rax,1)
L35:
  movb   $0x0,(%rdx)
  sub    $0x1,%rdx
  cmp    %rax,%rdx
  je     L23
L30:
  cmpb   $0x20,(%rdx)
  je     L35
L23:
  pop    %rbx
  ret
```

assistant: ```c
void trim_trailing_space(char *s) {
  int i, n = strlen(s);
  for (i = n - 1; i > 0; i--) {
    if (s[i] == ' ') {
      s[i] = '\0';
    } else {
      break;
    }
  }
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<get_hash>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %rdi,-0x28(%rbp)
  mov    $0x811c9dc5,%eax
  mov    %rax,-0x18(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  mov    %rax,-0x8(%rbp)
  movq   $0x0,-0x10(%rbp)
  jmp    L13
L9:
  mov    -0x18(%rbp),%rax
  imul   $0x1000193,%rax,%rax
  mov    %rax,-0x18(%rbp)
  mov    -0x28(%rbp),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movsbq %al,%rax
  xor    %rax,-0x18(%rbp)
  addq   $0x1,-0x10(%rbp)
L13:
  mov    -0x10(%rbp),%rax
  cmp    -0x8(%rbp),%rax
  jb     L9
  mov    -0x18(%rbp),%rax
  leave
  ret
```

assistant: ```c
size_t get_hash(const char *key) {
  size_t hash;
  size_t len;
  size_t idx;
  hash = (2166136261);
  len = strlen(key);
  idx = 0;
  while (idx < len) {
    hash *= (16777619);
    hash ^= key[idx];
    idx++;
  }
  return hash;
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<get_hash>:
  endbr64
  push   %rbx
  mov    %rdi,%rbx
  call   <strlen@plt>
  mov    %rax,%rcx
  mov    $0x811c9dc5,%eax
  test   %rcx,%rcx
  je     L18
  mov    %rbx,%rdx
  lea    (%rbx,%rcx,1),%rdi
L1:
  imul   $0x1000193,%rax,%rax
  movsbq (%rdx),%rcx
  xor    %rcx,%rax
  add    $0x1,%rdx
  cmp    %rdi,%rdx
  jne    L1
L18:
  pop    %rbx
  ret
```

assistant: ```c
size_t get_hash(const char *key) {
  size_t hash;
  size_t len;
  size_t idx;
  hash = (2166136261);
  len = strlen(key);
  idx = 0;
  while (idx < len) {
    hash *= (16777619);
    hash ^= key[idx];
    idx++;
  }
  return hash;
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<get_hash>:
  endbr64
  push   %rbx
  mov    %rdi,%rbx
  call   <strlen@plt>
  mov    %rax,%rcx
  mov    $0x811c9dc5,%eax
  test   %rcx,%rcx
  je     L19
  mov    %rbx,%rdi
  add    %rbx,%rcx
L12:
  imul   $0x1000193,%rax,%rax
  movsbq (%rdi),%rdx
  add    $0x1,%rdi
  xor    %rdx,%rax
  cmp    %rcx,%rdi
  jne    L12
L19:
  pop    %rbx
  ret
```

assistant: ```c
size_t get_hash(const char *key) {
  size_t hash;
  size_t len;
  size_t idx;
  hash = (2166136261);
  len = strlen(key);
  idx = 0;
  while (idx < len) {
    hash *= (16777619);
    hash ^= key[idx];
    idx++;
  }
  return hash;
}
```
user: 请将以下的汇编代码转换成C语言代码：

```asm
<get_hash>:
  endbr64
  push   %rbx
  mov    %rdi,%rbx
  call   <strlen@plt>
  mov    %rax,%rcx
  mov    $0x811c9dc5,%eax
  test   %rcx,%rcx
  je     L9
  mov    %rbx,%rdi
  add    %rbx,%rcx
L6:
  imul   $0x1000193,%rax,%rax
  movsbq (%rdi),%rdx
  add    $0x1,%rdi
  xor    %rdx,%rax
  cmp    %rdi,%rcx
  jne    L6
L9:
  pop    %rbx
  ret
```

assistant: ```c
size_t get_hash(const char *key) {
  size_t hash;
  size_t len;
  size_t idx;
  hash = (2166136261);
  len = strlen(key);
  idx = 0;
  while (idx < len) {
    hash *= (16777619);
    hash ^= key[idx];
    idx++;
  }
  return hash;
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<is_number>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x18(%rbp)
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  mov    %eax,-0x4(%rbp)
  movl   $0x0,-0x8(%rbp)
  jmp    L22
L25:
  mov    -0x8(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  mov    %eax,%edi
  call   <isdigit@plt>
  test   %eax,%eax
  jne    L35
  mov    $0x0,%eax
  jmp    L1
L35:
  addl   $0x1,-0x8(%rbp)
L22:
  mov    -0x8(%rbp),%eax
  cmp    -0x4(%rbp),%eax
  jl     L25
  mov    $0x1,%eax
L1:
  leave
  ret
```

assistant: ```c
int is_number(char *str) {
  int l = strlen(str);
  int i;
  for (i = 0; i < l; i++)
    if (!isdigit(str[i]))
      return 0;
  return 1;
}
```
user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<is_number>:
  endbr64
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    %rdi,%rbp
  call   <strlen@plt>
  test   %eax,%eax
  jle    L23
  mov    %rbp,%rbx
  lea    -0x1(%rax),%eax
  lea    0x1(%rbp,%rax,1),%rbp
L35:
  movsbl (%rbx),%edi
  call   <isdigit@plt>
  test   %eax,%eax
  je     L15
  add    $0x1,%rbx
  cmp    %rbp,%rbx
  jne    L35
  mov    $0x1,%eax
L15:
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  ret
L23:
  mov    $0x1,%eax
  jmp    L15
```

assistant: ```c
int is_number(char *str) {
  int l = strlen(str);
  int i;
  for (i = 0; i < l; i++)
    if (!isdigit(str[i]))
      return 0;
  return 1;
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<is_number>:
  endbr64
  push   %rbp
  push   %rbx
  mov    %rdi,%rbx
  sub    $0x8,%rsp
  call   <strlen@plt>
  test   %eax,%eax
  jle    L22
  sub    $0x1,%eax
  lea    0x1(%rbx,%rax,1),%rbp
  jmp    L34
L10:
  add    $0x1,%rbx
  cmp    %rbp,%rbx
  je     L22
L34:
  movsbl (%rbx),%edi
  call   <isdigit@plt>
  test   %eax,%eax
  jne    L10
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  ret
  nopl   0x0(%rax)
L22:
  add    $0x8,%rsp
  mov    $0x1,%eax
  pop    %rbx
  pop    %rbp
  ret
```

assistant: ```c
int is_number(char *str) {
  int l = strlen(str);
  int i;
  for (i = 0; i < l; i++)
    if (!isdigit(str[i]))
      return 0;
  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
<is_number>:
  endbr64
  push   %rbp
  push   %rbx
  mov    %rdi,%rbx
  sub    $0x8,%rsp
  call   <strlen@plt>
  test   %eax,%eax
  jle    L9
  sub    $0x1,%eax
  lea    0x1(%rbx,%rax,1),%rbp
  jmp    L18
L24:
  add    $0x1,%rbx
  cmp    %rbp,%rbx
  je     L9
L18:
  movsbl (%rbx),%edi
  call   <isdigit@plt>
  test   %eax,%eax
  jne    L24
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  ret
  nopl   0x0(%rax)
L9:
  add    $0x8,%rsp
  mov    $0x1,%eax
  pop    %rbx
  pop    %rbp
  ret
```

assistant: ```c
int is_number(char *str) {
  int l = strlen(str);
  int i;
  for (i = 0; i < l; i++)
    if (!isdigit(str[i]))
      return 0;
  return 1;
}
```
user: 这段汇编代码用C语言表示是什么样的？

```asm
<bit_get_msb_pos>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %edi,-0x14(%rbp)
  movl   $0x0,-0x4(%rbp)
  mov    -0x14(%rbp),%eax
  mov    $0x0,%ax
  test   %eax,%eax
  je     L53
  addl   $0x10,-0x4(%rbp)
  sarl   $0x10,-0x14(%rbp)
L53:
  mov    -0x14(%rbp),%eax
  and    $0xff00,%eax
  test   %eax,%eax
  je     L26
  addl   $0x8,-0x4(%rbp)
  sarl   $0x8,-0x14(%rbp)
L26:
  mov    -0x14(%rbp),%eax
  and    $0xf0,%eax
  test   %eax,%eax
  je     L57
  addl   $0x4,-0x4(%rbp)
  sarl   $0x4,-0x14(%rbp)
L57:
  mov    -0x14(%rbp),%eax
  and    $0xc,%eax
  test   %eax,%eax
  je     L6
  addl   $0x2,-0x4(%rbp)
  sarl   $0x2,-0x14(%rbp)
L6:
  mov    -0x14(%rbp),%eax
  and    $0x2,%eax
  test   %eax,%eax
  je     L22
  addl   $0x1,-0x4(%rbp)
  sarl   -0x14(%rbp)
L22:
  cmpl   $0x0,-0x14(%rbp)
  jne    L74
  cmpl   $0x0,-0x4(%rbp)
  je     L9
L74:
  mov    -0x4(%rbp),%eax
  jmp    L8
L9:
  mov    $0xffffffff,%eax
L8:
  pop    %rbp
  ret
```

assistant: ```c
int bit_get_msb_pos(int n) {
  int pos_zb = 0;
  if (n & 0xFFFF0000) {
    pos_zb += 16;
    n >>= 16;
  }
  if (n & 0xFF00) {
    pos_zb += 8;
    n >>= 8;
  }
  if (n & 0xF0) {
    pos_zb += 4;
    n >>= 4;
  }
  if (n & 0xC) {
    pos_zb += 2;
    n >>= 2;
  }
  if (n & 0x2) {
    pos_zb += 1;
    n >>= 1;
  }
  if (n || pos_zb)
    return pos_zb;
  else
    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
<bit_get_msb_pos>:
  endbr64
  mov    $0x0,%eax
  test   $0xffff0000,%edi
  je     L8
  sar    $0x10,%edi
  mov    $0x10,%eax
L8:
  test   $0xff00,%edi
  je     L59
  add    $0x8,%eax
  sar    $0x8,%edi
L59:
  test   $0xf0,%dil
  je     L32
  add    $0x4,%eax
  sar    $0x4,%edi
L32:
  test   $0xc,%dil
  je     L12
  add    $0x2,%eax
  test   $0x8,%dil
  jne    L9
  ret
L12:
  test   $0x2,%dil
  je     L46
L9:
  add    $0x1,%eax
  ret
L46:
  or     %eax,%edi
  mov    $0xffffffff,%edx
  cmove  %edx,%eax
  ret
```

assistant: ```c
int bit_get_msb_pos(int n) {
  int pos_zb = 0;
  if (n & 0xFFFF0000) {
    pos_zb += 16;
    n >>= 16;
  }
  if (n & 0xFF00) {
    pos_zb += 8;
    n >>= 8;
  }
  if (n & 0xF0) {
    pos_zb += 4;
    n >>= 4;
  }
  if (n & 0xC) {
    pos_zb += 2;
    n >>= 2;
  }
  if (n & 0x2) {
    pos_zb += 1;
    n >>= 1;
  }
  if (n || pos_zb)
    return pos_zb;
  else
    return -1;
}
```
user: 请将以下的汇编代码转换成C语言代码：

```asm
<bit_get_msb_pos>:
  endbr64
  xor    %eax,%eax
  test   $0xffff0000,%edi
  je     L32
  sar    $0x10,%edi
  mov    $0x10,%eax
L32:
  test   $0xff00,%edi
  je     L20
  add    $0x8,%eax
  sar    $0x8,%edi
L20:
  test   $0xf0,%dil
  je     L0
  add    $0x4,%eax
  sar    $0x4,%edi
L0:
  test   $0xc,%dil
  je     L7
  add    $0x2,%eax
  and    $0x8,%edi
  je     L13
L41:
  add    $0x1,%eax
  ret
  nopw   0x0(%rax,%rax,1)
L13:
  ret
  nopl   0x0(%rax)
L7:
  test   $0x2,%dil
  jne    L41
  or     %eax,%edi
  mov    $0xffffffff,%edx
  cmove  %edx,%eax
  ret
```

assistant: ```c
int bit_get_msb_pos(int n) {
  int pos_zb = 0;
  if (n & 0xFFFF0000) {
    pos_zb += 16;
    n >>= 16;
  }
  if (n & 0xFF00) {
    pos_zb += 8;
    n >>= 8;
  }
  if (n & 0xF0) {
    pos_zb += 4;
    n >>= 4;
  }
  if (n & 0xC) {
    pos_zb += 2;
    n >>= 2;
  }
  if (n & 0x2) {
    pos_zb += 1;
    n >>= 1;
  }
  if (n || pos_zb)
    return pos_zb;
  else
    return -1;
}
```
user: 这段汇编代码用C语言表示是什么样的：

```asm
<bit_get_msb_pos>:
  endbr64
  test   $0xffff0000,%edi
  je     L27
  sar    $0x10,%edi
  mov    $0x18,%edx
  mov    $0x10,%eax
L11:
  test   $0xff00,%edi
  je     L50
  sar    $0x8,%edi
  mov    %edx,%eax
L50:
  test   $0xf0,%dil
  je     L40
  add    $0x4,%eax
  sar    $0x4,%edi
L40:
  test   $0xc,%dil
  je     L6
  add    $0x2,%eax
  and    $0x8,%edi
  je     L30
L2:
  add    $0x1,%eax
  ret
  nopl   0x0(%rax)
L27:
  mov    $0x8,%edx
  xor    %eax,%eax
  jmp    L11
  nopl   0x0(%rax)
L30:
  ret
  nopl   0x0(%rax)
L6:
  test   $0x2,%dil
  jne    L2
  or     %eax,%edi
  mov    $0xffffffff,%edx
  cmove  %edx,%eax
  ret
```

assistant: ```c
int bit_get_msb_pos(int n) {
  int pos_zb = 0;
  if (n & 0xFFFF0000) {
    pos_zb += 16;
    n >>= 16;
  }
  if (n & 0xFF00) {
    pos_zb += 8;
    n >>= 8;
  }
  if (n & 0xF0) {
    pos_zb += 4;
    n >>= 4;
  }
  if (n & 0xC) {
    pos_zb += 2;
    n >>= 2;
  }
  if (n & 0x2) {
    pos_zb += 1;
    n >>= 1;
  }
  if (n || pos_zb)
    return pos_zb;
  else
    return -1;
}
```
user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<vec2_add>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x8(%rbp)
  mov    %rsi,-0x10(%rbp)
  mov    -0x8(%rbp),%rax
  movss  (%rax),%xmm1
  mov    -0x10(%rbp),%rax
  movss  (%rax),%xmm0
  addss  %xmm1,%xmm0
  mov    -0x8(%rbp),%rax
  movss  %xmm0,(%rax)
  mov    -0x8(%rbp),%rax
  add    $0x4,%rax
  movss  (%rax),%xmm1
  mov    -0x10(%rbp),%rax
  add    $0x4,%rax
  movss  (%rax),%xmm0
  mov    -0x8(%rbp),%rax
  add    $0x4,%rax
  addss  %xmm1,%xmm0
  movss  %xmm0,(%rax)
  nop
  pop    %rbp
  ret
```

assistant: ```c
void vec2_add(float *dst, float *b) {
  dst[0] = dst[0] + b[0];
  dst[1] = dst[1] + b[1];
}
```
user: 这段汇编代码用C语言表示是什么样的？

```asm
<vec2_add>:
  endbr64
  movss  (%rdi),%xmm0
  addss  (%rsi),%xmm0
  movss  %xmm0,(%rdi)
  movss  0x4(%rdi),%xmm0
  addss  0x4(%rsi),%xmm0
  movss  %xmm0,0x4(%rdi)
  ret
```

assistant: ```c
void vec2_add(float *dst, float *b) {
  dst[0] = dst[0] + b[0];
  dst[1] = dst[1] + b[1];
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<vec2_add>:
  endbr64
  movss  (%rdi),%xmm0
  addss  (%rsi),%xmm0
  movss  %xmm0,(%rdi)
  movss  0x4(%rdi),%xmm0
  addss  0x4(%rsi),%xmm0
  movss  %xmm0,0x4(%rdi)
  ret
```

assistant: ```c
void vec2_add(float *dst, float *b) {
  dst[0] = dst[0] + b[0];
  dst[1] = dst[1] + b[1];
}
```
user: 请将以下的汇编代码转换成C语言代码：

```asm
<vec2_add>:
  endbr64
  movss  (%rdi),%xmm0
  addss  (%rsi),%xmm0
  movss  %xmm0,(%rdi)
  movss  0x4(%rdi),%xmm0
  addss  0x4(%rsi),%xmm0
  movss  %xmm0,0x4(%rdi)
  ret
```

assistant: ```c
void vec2_add(float *dst, float *b) {
  dst[0] = dst[0] + b[0];
  dst[1] = dst[1] + b[1];
}
```
user: 请将这段汇编代码片段转换成等效的C代码:

```asm
<put_sprite_cropped>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x28(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    %edx,-0x34(%rbp)
  mov    %ecx,-0x38(%rbp)
  mov    -0x30(%rbp),%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  mov    %eax,-0x18(%rbp)
  mov    -0x30(%rbp),%rax
  add    $0x1,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  mov    %eax,-0x14(%rbp)
  mov    -0x30(%rbp),%rax
  add    $0x2,%rax
  mov    %rax,-0x10(%rbp)
  mov    -0x38(%rbp),%edx
  mov    %edx,%eax
  shl    $0x2,%eax
  add    %edx,%eax
  shl    $0x7,%eax
  mov    %eax,%edx
  mov    -0x34(%rbp),%eax
  add    %edx,%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x8(%rbp)
  movl   $0x0,-0x1c(%rbp)
  jmp    L5
L30:
  movl   $0x0,-0x20(%rbp)
  jmp    L68
L42:
  mov    -0x10(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0xff,%al
  je     L27
  mov    -0x20(%rbp),%edx
  mov    -0x34(%rbp),%eax
  add    %edx,%eax
  cmp    $0x27f,%eax
  jg     L27
  mov    -0x1c(%rbp),%edx
  mov    -0x38(%rbp),%eax
  add    %edx,%eax
  cmp    $0x1df,%eax
  jg     L27
  mov    -0x10(%rbp),%rax
  movzbl (%rax),%edx
  mov    -0x8(%rbp),%rax
  mov    %dl,(%rax)
L27:
  addq   $0x1,-0x8(%rbp)
  addq   $0x1,-0x10(%rbp)
  addl   $0x1,-0x20(%rbp)
L68:
  mov    -0x20(%rbp),%eax
  cmp    -0x18(%rbp),%eax
  jl     L42
  mov    $0x280,%eax
  sub    -0x18(%rbp),%eax
  cltq
  add    %rax,-0x8(%rbp)
  addl   $0x1,-0x1c(%rbp)
L5:
  mov    -0x1c(%rbp),%eax
  cmp    -0x14(%rbp),%eax
  jl     L30
  nop
  pop    %rbp
  ret
```

assistant: ```c
void put_sprite_cropped(unsigned char *buffer, unsigned char *sprite, int x, int y) {
  int xsize, ysize;
  int xx, yy;
  unsigned char *sprite_pointer, *output_pointer;
  xsize = sprite[0];
  ysize = sprite[1];
  sprite_pointer = &sprite[2];
  output_pointer = &buffer[(y * 640) + x];
  for (yy = 0; yy < ysize; yy++) {
    for (xx = 0; xx < xsize; xx++) {
      if (*sprite_pointer != 0xff) {
        if ((xx + x < 640) && (yy + y < 480)) {
          *output_pointer = *sprite_pointer;
        }
      }
      output_pointer++;
      sprite_pointer++;
    }
    output_pointer += (640 - xsize);
  }
  return;
}
```
user: 这段汇编代码用C语言表示是什么样的:

```asm
<put_sprite_cropped>:
  endbr64
  mov    %rdi,%r10
  mov    %edx,%r8d
  movzbl (%rsi),%r11d
  movzbl 0x1(%rsi),%eax
  add    $0x2,%rsi
  lea    (%rcx,%rcx,4),%edx
  shl    $0x7,%edx
  add    %r8d,%edx
  movslq %edx,%rdx
  add    %rdx,%r10
  test   %al,%al
  je     L99
  push   %rbp
  push   %rbx
  movzbl %r11b,%edi
  mov    %ecx,%r9d
  movzbl %al,%eax
  lea    (%rax,%rcx,1),%ebx
  movzbl %r11b,%r11d
  mov    $0x280,%ebp
  sub    %edi,%ebp
  movslq %ebp,%rbp
  jmp    L69
L56:
  add    $0x1,%rax
  cmp    %eax,%edi
  jle    L18
L58:
  movzbl (%rsi,%rax,1),%edx
  cmp    $0xff,%dl
  je     L56
  lea    (%r8,%rax,1),%ecx
  cmp    $0x27f,%ecx
  jg     L56
  cmp    $0x1df,%r9d
  jg     L56
  mov    %dl,(%r10,%rax,1)
  jmp    L56
L18:
  add    %r11,%r10
  add    %r11,%rsi
L10:
  add    %rbp,%r10
  add    $0x1,%r9d
  cmp    %ebx,%r9d
  je     L77
L69:
  mov    $0x0,%eax
  test   %edi,%edi
  jg     L58
  jmp    L10
L77:
  pop    %rbx
  pop    %rbp
  ret
L99:
  ret
```

assistant: ```c
void put_sprite_cropped(unsigned char *buffer, unsigned char *sprite, int x, int y) {
  int xsize, ysize;
  int xx, yy;
  unsigned char *sprite_pointer, *output_pointer;
  xsize = sprite[0];
  ysize = sprite[1];
  sprite_pointer = &sprite[2];
  output_pointer = &buffer[(y * 640) + x];
  for (yy = 0; yy < ysize; yy++) {
    for (xx = 0; xx < xsize; xx++) {
      if (*sprite_pointer != 0xff) {
        if ((xx + x < 640) && (yy + y < 480)) {
          *output_pointer = *sprite_pointer;
        }
      }
      output_pointer++;
      sprite_pointer++;
    }
    output_pointer += (640 - xsize);
  }
  return;
}
```