ylfeng/ReF-Decompile-dataset huggingface dataset:
user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<search_for_value>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    %rdi,%r12
  mov    %rsi,%r13
  mov    (%rdi),%rbp
  test   %rbp,%rbp
  je     L34
L29:
  mov    %r13,%rsi
  mov    %rbp,%rdi
  call   <contains@plt>
  mov    %eax,%ebx
  test   %eax,%eax
  jns    L32
  add    $0x8,%r12
  mov    (%r12),%rbp
  test   %rbp,%rbp
  jne    L29
  jmp    L34
L32:
  mov    $0x64,%edi
  call   <malloc@plt>
  mov    %rax,%rbp
  mov    $0x64,%edx
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  movslq %ebx,%rbx
  mov    (%r12),%rax
  lea    0x1(%rax,%rbx,1),%rsi
  mov    %rbp,%rdi
  call   <strcpy@plt>
L34:
  mov    %rbp,%rax
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
```

assistant: ```c
char *search_for_value(char *envp[], char *key) {
  int i = 0;
  while (envp[i] != NULL) {
    int index = contains(envp[i], key);
    if (index >= 0) {
      char *result = (char *)malloc(sizeof(char) * 100);
      memset(result, '\0', 100);
      strcpy(result, envp[i] + (index + 1));
      return result;
    }
    i++;
  }
  return NULL;
}
```
user: 请将以下的汇编代码转换成C语言代码：

```asm
<search_for_value>:
  endbr64
  push   %r12
  push   %rbp
  mov    %rdi,%rbp
  push   %rbx
  mov    (%rdi),%rdi
  test   %rdi,%rdi
  je     L0
  mov    %rsi,%r12
  jmp    L32
  nopl   0x0(%rax,%rax,1)
L7:
  mov    0x8(%rbp),%rdi
  add    $0x8,%rbp
  test   %rdi,%rdi
  je     L0
L32:
  mov    %r12,%rsi
  call   <contains@plt>
  movslq %eax,%rbx
  test   %ebx,%ebx
  js     L7
  mov    $0x64,%edi
  call   <malloc@plt>
  mov    $0x64,%edx
  xor    %esi,%esi
  mov    %rax,%rdi
  mov    %rax,%r12
  call   <memset@plt>
  mov    0x0(%rbp),%rax
  mov    %r12,%rdi
  lea    0x1(%rax,%rbx,1),%rsi
  call   <strcpy@plt>
  mov    %r12,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
  nopl   0x0(%rax)
L0:
  xor    %r12d,%r12d
  pop    %rbx
  pop    %rbp
  mov    %r12,%rax
  pop    %r12
  ret
```

assistant: ```c
char *search_for_value(char *envp[], char *key) {
  int i = 0;
  while (envp[i] != NULL) {
    int index = contains(envp[i], key);
    if (index >= 0) {
      char *result = (char *)malloc(sizeof(char) * 100);
      memset(result, '\0', 100);
      strcpy(result, envp[i] + (index + 1));
      return result;
    }
    i++;
  }
  return NULL;
}
```
user: Translate the below assembly code into C programming language:

```asm
<search_for_value>:
  endbr64
  push   %r12
  push   %rbp
  mov    %rdi,%rbp
  push   %rbx
  mov    (%rdi),%rdi
  test   %rdi,%rdi
  je     L24
  mov    %rsi,%r12
  jmp    L38
  nopl   0x0(%rax,%rax,1)
L23:
  mov    0x8(%rbp),%rdi
  add    $0x8,%rbp
  test   %rdi,%rdi
  je     L24
L38:
  mov    %r12,%rsi
  call   <contains@plt>
  movslq %eax,%rbx
  test   %ebx,%ebx
  js     L23
  mov    $0x64,%edi
  call   <malloc@plt>
  mov    $0x64,%edx
  xor    %esi,%esi
  mov    %rax,%rdi
  mov    %rax,%r12
  call   <memset@plt>
  mov    0x0(%rbp),%rax
  mov    %r12,%rdi
  lea    0x1(%rax,%rbx,1),%rsi
  call   <strcpy@plt>
  mov    %r12,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
  nopl   0x0(%rax)
L24:
  xor    %r12d,%r12d
  pop    %rbx
  pop    %rbp
  mov    %r12,%rax
  pop    %r12
  ret
```

assistant: ```c
char *search_for_value(char *envp[], char *key) {
  int i = 0;
  while (envp[i] != NULL) {
    int index = contains(envp[i], key);
    if (index >= 0) {
      char *result = (char *)malloc(sizeof(char) * 100);
      memset(result, '\0', 100);
      strcpy(result, envp[i] + (index + 1));
      return result;
    }
    i++;
  }
  return NULL;
}
```
user: 请将以下的汇编代码转换成C语言代码:

```asm
<expsize>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x18(%rbp)
  movq   $0x4,-0x8(%rbp)
  jmp    L10
L19:
  addq   $0x1,-0x8(%rbp)
L10:
  mov    -0x8(%rbp),%rax
  mov    $0x1,%edx
  mov    %eax,%ecx
  shl    %cl,%edx
  mov    %edx,%eax
  cltq
  cmp    %rax,-0x18(%rbp)
  ja     L19
  mov    -0x8(%rbp),%rax
  pop    %rbp
  ret
```

assistant: ```c
size_t expsize(size_t size) {
  size_t exp;
  exp = 4;
  while ((size_t)(1 << exp) < size)
    ++exp;
  return (exp);
}
```
user: 这段汇编代码用C语言表示是什么样的？

```asm
<expsize>:
  endbr64
  cmp    $0x10,%rdi
  jbe    L22
  mov    $0x4,%ecx
  mov    $0x1,%edx
L10:
  add    $0x1,%rcx
  mov    %edx,%eax
  shl    %cl,%eax
  cltq
  cmp    %rdi,%rax
  jb     L10
L11:
  mov    %rcx,%rax
  ret
L22:
  mov    $0x4,%ecx
  jmp    L11
```

assistant: ```c
size_t expsize(size_t size) {
  size_t exp;
  exp = 4;
  while ((size_t)(1 << exp) < size)
    ++exp;
  return (exp);
}
```
user: 这段汇编代码用C语言表示是什么样的？

```asm
<expsize>:
  endbr64
  mov    $0x4,%ecx
  cmp    $0x10,%rdi
  jbe    L9
  mov    $0x1,%edx
  nopl   0x0(%rax)
L2:
  add    $0x1,%rcx
  mov    %edx,%eax
  shl    %cl,%eax
  cltq
  cmp    %rdi,%rax
  jb     L2
L9:
  mov    %rcx,%rax
  ret
```

assistant: ```c
size_t expsize(size_t size) {
  size_t exp;
  exp = 4;
  while ((size_t)(1 << exp) < size)
    ++exp;
  return (exp);
}
```
user: 请从给定的汇编指令推导出C源代码：

```asm
<expsize>:
  endbr64
  mov    $0x4,%ecx
  cmp    $0x10,%rdi
  jbe    L5
  mov    $0x1,%edx
  nopl   0x0(%rax)
L2:
  add    $0x1,%rcx
  mov    %edx,%eax
  shl    %cl,%eax
  cltq
  cmp    %rdi,%rax
  jb     L2
L5:
  mov    %rcx,%rax
  ret
```

assistant: ```c
size_t expsize(size_t size) {
  size_t exp;
  exp = 4;
  while ((size_t)(1 << exp) < size)
    ++exp;
  return (exp);
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<soma>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x18(%rbp)
  mov    %esi,-0x1c(%rbp)
  pxor   %xmm0,%xmm0
  movss  %xmm0,-0x8(%rbp)
  movl   $0x0,-0x4(%rbp)
  jmp    L11
L15:
  mov    -0x4(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  movss  -0x8(%rbp),%xmm1
  addss  %xmm1,%xmm0
  movss  %xmm0,-0x8(%rbp)
  addl   $0x1,-0x4(%rbp)
L11:
  mov    -0x4(%rbp),%eax
  cmp    -0x1c(%rbp),%eax
  jl     L15
  movss  -0x8(%rbp),%xmm0
  cvttss2si %xmm0,%eax
  pop    %rbp
  ret
```

assistant: ```c
soma(float *pn, int n) {
  float soma;
  int i;
  soma = 0.;
  for (i = 0; i < n; i++) {
    soma += pn[i];
  }
  return soma;
}
```
user: 请将以下的汇编代码转换成C语言代码:

```asm
<soma>:
  endbr64
  test   %esi,%esi
  jle    L23
  mov    %rdi,%rax
  lea    -0x1(%rsi),%edx
  lea    0x4(%rdi,%rdx,4),%rdx
  pxor   %xmm0,%xmm0
L12:
  addss  (%rax),%xmm0
  add    $0x4,%rax
  cmp    %rdx,%rax
  jne    L12
L15:
  cvttss2si %xmm0,%eax
  ret
L23:
  pxor   %xmm0,%xmm0
  jmp    L15
```

assistant: ```c
soma(float *pn, int n) {
  float soma;
  int i;
  soma = 0.;
  for (i = 0; i < n; i++) {
    soma += pn[i];
  }
  return soma;
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<soma>:
  endbr64
  test   %esi,%esi
  jle    L12
  lea    -0x1(%rsi),%eax
  pxor   %xmm0,%xmm0
  lea    0x4(%rdi,%rax,4),%rax
  nopl   0x0(%rax)
L7:
  addss  (%rdi),%xmm0
  add    $0x4,%rdi
  cmp    %rax,%rdi
  jne    L7
  cvttss2si %xmm0,%eax
  ret
  nopw   0x0(%rax,%rax,1)
L12:
  xor    %eax,%eax
  ret
```

assistant: ```c
soma(float *pn, int n) {
  float soma;
  int i;
  soma = 0.;
  for (i = 0; i < n; i++) {
    soma += pn[i];
  }
  return soma;
}
```
user: Translate the below assembly code into C programming language:

```asm
<soma>:
  endbr64
  test   %esi,%esi
  jle    L60
  lea    -0x1(%rsi),%eax
  cmp    $0x2,%eax
  jbe    L8
  mov    %esi,%edx
  mov    %rdi,%rax
  pxor   %xmm1,%xmm1
  shr    $0x2,%edx
  sub    $0x1,%edx
  shl    $0x4,%rdx
  lea    0x10(%rdi,%rdx,1),%rdx
L5:
  movups (%rax),%xmm0
  add    $0x10,%rax
  addss  %xmm0,%xmm1
  movaps %xmm0,%xmm2
  shufps $0x55,%xmm0,%xmm2
  addss  %xmm2,%xmm1
  movaps %xmm0,%xmm2
  unpckhps %xmm0,%xmm2
  shufps $0xff,%xmm0,%xmm0
  addss  %xmm2,%xmm1
  addss  %xmm0,%xmm1
  cmp    %rdx,%rax
  jne    L5
  mov    %esi,%eax
  and    $0xfffffffc,%eax
  test   $0x3,%sil
  je     L13
L31:
  movslq %eax,%rdx
  addss  (%rdi,%rdx,4),%xmm1
  lea    0x0(,%rdx,4),%rcx
  lea    0x1(%rax),%edx
  cmp    %edx,%esi
  jle    L13
  add    $0x2,%eax
  addss  0x4(%rdi,%rcx,1),%xmm1
  cmp    %eax,%esi
  jle    L13
  addss  0x8(%rdi,%rcx,1),%xmm1
L13:
  cvttss2si %xmm1,%eax
  ret
  nopw   0x0(%rax,%rax,1)
L60:
  xor    %eax,%eax
  ret
L8:
  xor    %eax,%eax
  pxor   %xmm1,%xmm1
  jmp    L31
```

assistant: ```c
soma(float *pn, int n) {
  float soma;
  int i;
  soma = 0.;
  for (i = 0; i < n; i++) {
    soma += pn[i];
  }
  return soma;
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<memchr>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %rbx
  mov    %rdi,-0x10(%rbp)
  mov    %esi,-0x14(%rbp)
  mov    -0x10(%rbp),%rax
  lea    -0x1(%rax),%rbx
L16:
  add    $0x1,%rbx
  movzbl (%rbx),%eax
  mov    -0x14(%rbp),%edx
  cmp    %dl,%al
  jne    L19
  mov    %rbx,%rax
  jmp    L29
L19:
  movzbl (%rbx),%eax
  test   %al,%al
  jne    L16
  mov    $0x0,%eax
L29:
  mov    -0x8(%rbp),%rbx
  leave
  ret
```

assistant: ```c
void *memchr(const void *s, int c) {
  register unsigned char *p;
  p = (unsigned char *)s - 1;
  do {
    if (*++p == (unsigned char)c)
      return (void *)p;
  } while (*p);
  return 0;
}
```
user: Translate the below assembly code into C programming language:

```asm
<memchr>:
  endbr64
  lea    -0x1(%rdi),%rax
L10:
  add    $0x1,%rax
  movzbl (%rax),%edx
  cmp    %sil,%dl
  je     L4
  test   %dl,%dl
  jne    L10
  mov    $0x0,%eax
L4:
  ret
```

assistant: ```c
void *memchr(const void *s, int c) {
  register unsigned char *p;
  p = (unsigned char *)s - 1;
  do {
    if (*++p == (unsigned char)c)
      return (void *)p;
  } while (*p);
  return 0;
}
```
user: What is the c source code of the assembly code below:

```asm
<memchr>:
  endbr64
  lea    -0x1(%rdi),%rax
  jmp    L19
  nopw   0x0(%rax,%rax,1)
L17:
  test   %dl,%dl
  je     L20
L19:
  movzbl 0x1(%rax),%edx
  add    $0x1,%rax
  cmp    %sil,%dl
  jne    L17
  ret
  nopw   0x0(%rax,%rax,1)
L20:
  xor    %eax,%eax
  ret
```

assistant: ```c
void *memchr(const void *s, int c) {
  register unsigned char *p;
  p = (unsigned char *)s - 1;
  do {
    if (*++p == (unsigned char)c)
      return (void *)p;
  } while (*p);
  return 0;
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<memchr>:
  endbr64
  lea    -0x1(%rdi),%rax
  jmp    L18
  nopw   0x0(%rax,%rax,1)
L16:
  test   %dl,%dl
  je     L15
L18:
  movzbl 0x1(%rax),%edx
  add    $0x1,%rax
  cmp    %sil,%dl
  jne    L16
  ret
  nopw   0x0(%rax,%rax,1)
L15:
  xor    %eax,%eax
  ret
```

assistant: ```c
void *memchr(const void *s, int c) {
  register unsigned char *p;
  p = (unsigned char *)s - 1;
  do {
    if (*++p == (unsigned char)c)
      return (void *)p;
  } while (*p);
  return 0;
}
```
user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<strstr>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r12
  push   %rbx
  mov    %rdi,-0x18(%rbp)
  mov    %rsi,-0x20(%rbp)
  mov    -0x18(%rbp),%rbx
  mov    -0x20(%rbp),%r12
L18:
  movzbl (%r12),%eax
  test   %al,%al
  jne    L49
  mov    -0x18(%rbp),%rax
  jmp    L61
L49:
  movzbl (%r12),%edx
  movzbl (%rbx),%eax
  cmp    %al,%dl
  jne    L65
  add    $0x1,%r12
  add    $0x1,%rbx
  jmp    L18
L65:
  mov    -0x20(%rbp),%r12
  movzbl (%rbx),%eax
  test   %al,%al
  jne    L1
  mov    $0x0,%eax
  jmp    L61
L1:
  addq   $0x1,-0x18(%rbp)
  mov    -0x18(%rbp),%rbx
  jmp    L18
L61:
  pop    %rbx
  pop    %r12
  pop    %rbp
  ret
```

assistant: ```c
char *strstr(const char *s1, const char *s2) {
  register const char *s = s1;
  register const char *p = s2;
  do {
    if (!*p) {
      return (char *)s1;
      ;
    }
    if (*p == *s) {
      ++p;
      ++s;
    } else {
      p = s2;
      if (!*s) {
        return NULL;
      }
      s = ++s1;
    }
  } while (1);
}
```
user: 这段汇编代码用C语言表示是什么样的:

```asm
<strstr>:
  endbr64
  mov    %rdi,%rax
  movzbl (%rsi),%r9d
  test   %r9b,%r9b
  je     L55
  mov    %rsi,%rdi
  mov    %rax,%r8
  mov    %r9d,%ecx
  jmp    L26
L20:
  lea    0x1(%rdi),%rdx
  add    $0x1,%r8
  movzbl 0x1(%rdi),%ecx
  test   %cl,%cl
  je     L55
  mov    %rdx,%rdi
L26:
  movzbl (%r8),%edx
  cmp    %cl,%dl
  je     L20
  test   %dl,%dl
  je     L13
  add    $0x1,%rax
  mov    %rsi,%rdi
  mov    %rax,%r8
  mov    %r9d,%ecx
  jmp    L26
L13:
  mov    $0x0,%eax
L55:
  ret
```

assistant: ```c
char *strstr(const char *s1, const char *s2) {
  register const char *s = s1;
  register const char *p = s2;
  do {
    if (!*p) {
      return (char *)s1;
      ;
    }
    if (*p == *s) {
      ++p;
      ++s;
    } else {
      p = s2;
      if (!*s) {
        return NULL;
      }
      s = ++s1;
    }
  } while (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
<strstr>:
  endbr64
  movzbl (%rsi),%r9d
  test   %r9b,%r9b
  je     L4
  mov    %rsi,%rcx
  mov    %rdi,%r8
  mov    %r9d,%edx
L27:
  movzbl (%rdi),%eax
  cmp    %dl,%al
  je     L9
L66:
  test   %al,%al
  je     L36
  movzbl 0x1(%r8),%eax
  lea    0x1(%r8),%rdi
  mov    %r9d,%edx
  mov    %rsi,%rcx
  mov    %rdi,%r8
  cmp    %dl,%al
  jne    L66
L9:
  movzbl 0x1(%rcx),%edx
  lea    0x1(%rcx),%rax
  add    $0x1,%rdi
  test   %dl,%dl
  je     L49
  mov    %rax,%rcx
  jmp    L27
  nopl   0x0(%rax)
L36:
  xor    %r8d,%r8d
L49:
  mov    %r8,%rax
  ret
L4:
  mov    %rdi,%r8
  jmp    L49
```

assistant: ```c
char *strstr(const char *s1, const char *s2) {
  register const char *s = s1;
  register const char *p = s2;
  do {
    if (!*p) {
      return (char *)s1;
      ;
    }
    if (*p == *s) {
      ++p;
      ++s;
    } else {
      p = s2;
      if (!*s) {
        return NULL;
      }
      s = ++s1;
    }
  } while (1);
}
```
user: 请将这段汇编代码片段转换成等效的C代码:

```asm
<strstr>:
  endbr64
  movzbl (%rsi),%r9d
  test   %r9b,%r9b
  je     L6
  mov    %rsi,%rcx
  mov    %rdi,%r8
  mov    %r9d,%edx
L19:
  movzbl (%rdi),%eax
  cmp    %dl,%al
  je     L44
L13:
  test   %al,%al
  je     L17
  movzbl 0x1(%r8),%eax
  lea    0x1(%r8),%rdi
  mov    %r9d,%edx
  mov    %rsi,%rcx
  mov    %rdi,%r8
  cmp    %dl,%al
  jne    L13
L44:
  movzbl 0x1(%rcx),%edx
  lea    0x1(%rcx),%rax
  add    $0x1,%rdi
  test   %dl,%dl
  je     L45
  mov    %rax,%rcx
  jmp    L19
  nopl   0x0(%rax)
L17:
  xor    %r8d,%r8d
L45:
  mov    %r8,%rax
  ret
L6:
  mov    %rdi,%r8
  jmp    L45
```

assistant: ```c
char *strstr(const char *s1, const char *s2) {
  register const char *s = s1;
  register const char *p = s2;
  do {
    if (!*p) {
      return (char *)s1;
      ;
    }
    if (*p == *s) {
      ++p;
      ++s;
    } else {
      p = s2;
      if (!*s) {
        return NULL;
      }
      s = ++s1;
    }
  } while (1);
}
```
user: What is the c source code of the assembly code below?

```asm
<y162y>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r13
  push   %r12
  push   %rbx
  mov    %rdi,-0x20(%rbp)
  mov    %rsi,-0x28(%rbp)
  mov    %rdx,-0x30(%rbp)
  mov    %ecx,-0x34(%rbp)
  mov    -0x30(%rbp),%rax
  add    %eax,%eax
  sub    $0x1,%eax
  mov    %eax,%ebx
  mov    -0x30(%rbp),%rax
  sub    $0x1,%eax
  mov    %eax,%r12d
  jmp    L11
L1:
  mov    %ebx,%eax
  lea    -0x1(%rax),%ebx
  movslq %eax,%rdx
  mov    -0x20(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%r13d
  mov    %ebx,%eax
  lea    -0x1(%rax),%ebx
  movslq %eax,%rdx
  mov    -0x20(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  shl    $0x8,%eax
  lea    0x0(%r13,%rax,1),%edx
  mov    -0x34(%rbp),%eax
  sub    $0x8,%eax
  mov    %eax,%ecx
  sar    %cl,%edx
  mov    %edx,%ecx
  mov    %r12d,%eax
  lea    -0x1(%rax),%r12d
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    %ecx,%edx
  mov    %dl,(%rax)
L11:
  test   %ebx,%ebx
  jg     L1
  nop
  nop
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %rbp
  ret
```

assistant: ```c
void y162y(unsigned char *src, unsigned char *dest, unsigned long long int NumPixels, int bits) {
  register int i = (NumPixels << 1) - 1;
  register int j = NumPixels - 1;
  register int y;
  while (i > 0) {
    y = src[i--];
    dest[j--] = (y + (src[i--] << 8)) >> (bits - 8);
  }
}
```
user: 请将以下的汇编代码转换成C语言代码:

```asm
<y162y>:
  endbr64
  lea    (%rdx,%rdx,1),%r9d
  lea    -0x1(%r9),%eax
  sub    $0x1,%edx
  test   %eax,%eax
  jle    L11
  cltq
  add    %rax,%rdi
  movslq %edx,%rax
  lea    (%rsi,%rax,1),%rdx
  lea    -0x1(%rsi,%rax,1),%r8
  sub    $0x2,%r9d
  shr    %r9d
  mov    %r9d,%r9d
  sub    %r9,%r8
  sub    $0x8,%ecx
L5:
  movzbl -0x1(%rdi),%eax
  shl    $0x8,%eax
  movzbl (%rdi),%esi
  add    %esi,%eax
  sar    %cl,%eax
  mov    %al,(%rdx)
  sub    $0x2,%rdi
  sub    $0x1,%rdx
  cmp    %r8,%rdx
  jne    L5
L11:
  ret
```

assistant: ```c
void y162y(unsigned char *src, unsigned char *dest, unsigned long long int NumPixels, int bits) {
  register int i = (NumPixels << 1) - 1;
  register int j = NumPixels - 1;
  register int y;
  while (i > 0) {
    y = src[i--];
    dest[j--] = (y + (src[i--] << 8)) >> (bits - 8);
  }
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<y162y>:
  endbr64
  lea    (%rdx,%rdx,1),%r9d
  mov    %rsi,%r8
  sub    $0x1,%edx
  lea    -0x1(%r9),%eax
  test   %eax,%eax
  jle    L12
  cltq
  sub    $0x2,%r9d
  sub    $0x8,%ecx
  lea    (%rdi,%rax,1),%rsi
  movslq %edx,%rax
  shr    %r9d
  lea    (%r8,%rax,1),%rdx
  lea    -0x1(%r8,%rax,1),%r8
  sub    %r9,%r8
  nopl   (%rax)
L0:
  movzbl -0x1(%rsi),%eax
  movzbl (%rsi),%edi
  sub    $0x1,%rdx
  sub    $0x2,%rsi
  shl    $0x8,%eax
  add    %edi,%eax
  sar    %cl,%eax
  mov    %al,0x1(%rdx)
  cmp    %rdx,%r8
  jne    L0
L12:
  ret
```

assistant: ```c
void y162y(unsigned char *src, unsigned char *dest, unsigned long long int NumPixels, int bits) {
  register int i = (NumPixels << 1) - 1;
  register int j = NumPixels - 1;
  register int y;
  while (i > 0) {
    y = src[i--];
    dest[j--] = (y + (src[i--] << 8)) >> (bits - 8);
  }
}
```
user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<y162y>:
  endbr64
  lea    (%rdx,%rdx,1),%r9d
  mov    %rsi,%r8
  sub    $0x1,%edx
  lea    -0x1(%r9),%eax
  test   %eax,%eax
  jle    L11
  cltq
  sub    $0x2,%r9d
  sub    $0x8,%ecx
  lea    (%rdi,%rax,1),%rsi
  movslq %edx,%rax
  shr    %r9d
  lea    (%r8,%rax,1),%rdx
  lea    -0x1(%r8,%rax,1),%r8
  sub    %r9,%r8
  nopl   (%rax)
L5:
  movzbl -0x1(%rsi),%eax
  movzbl (%rsi),%edi
  sub    $0x1,%rdx
  sub    $0x2,%rsi
  shl    $0x8,%eax
  add    %edi,%eax
  sar    %cl,%eax
  mov    %al,0x1(%rdx)
  cmp    %rdx,%r8
  jne    L5
L11:
  ret
```

assistant: ```c
void y162y(unsigned char *src, unsigned char *dest, unsigned long long int NumPixels, int bits) {
  register int i = (NumPixels << 1) - 1;
  register int j = NumPixels - 1;
  register int y;
  while (i > 0) {
    y = src[i--];
    dest[j--] = (y + (src[i--] << 8)) >> (bits - 8);
  }
}
```
user: 请将这段汇编代码片段转换成等效的C代码:

```asm
<swap_direct>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x18(%rbp)
  mov    %rsi,-0x20(%rbp)
  mov    -0x18(%rbp),%rax
  mov    (%rax),%eax
  mov    %eax,-0x4(%rbp)
  mov    -0x20(%rbp),%rax
  mov    (%rax),%edx
  mov    -0x18(%rbp),%rax
  mov    %edx,(%rax)
  mov    -0x20(%rbp),%rax
  mov    -0x4(%rbp),%edx
  mov    %edx,(%rax)
  nop
  pop    %rbp
  ret
```

assistant: ```c
void swap_direct(uint32_t *x, uint32_t *y) {
  uint32_t tmp;
  tmp = *x;
  *x = *y;
  *y = tmp;
}
```
user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<swap_direct>:
  endbr64
  mov    (%rdi),%eax
  mov    (%rsi),%edx
  mov    %edx,(%rdi)
  mov    %eax,(%rsi)
  ret
```

assistant: ```c
void swap_direct(uint32_t *x, uint32_t *y) {
  uint32_t tmp;
  tmp = *x;
  *x = *y;
  *y = tmp;
}
```
user: 这段汇编代码用C语言表示是什么样的?

```asm
<swap_direct>:
  endbr64
  mov    (%rdi),%eax
  mov    (%rsi),%edx
  mov    %edx,(%rdi)
  mov    %eax,(%rsi)
  ret
```

assistant: ```c
void swap_direct(uint32_t *x, uint32_t *y) {
  uint32_t tmp;
  tmp = *x;
  *x = *y;
  *y = tmp;
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<kmain>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    $0x0,%eax
  call   <gdt_init@plt>
  mov    $0x0,%eax
  call   <hang@plt>
  nop
  pop    %rbp
  ret
```

assistant: ```c
kmain() {
  gdt_init();
  hang();
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<kmain>:
  endbr64
  sub    $0x8,%rsp
  mov    $0x0,%eax
  call   <gdt_init@plt>
  mov    $0x0,%eax
  call   <hang@plt>
  add    $0x8,%rsp
  ret
```

assistant: ```c
kmain() {
  gdt_init();
  hang();
}
```
user: 请从给定的汇编指令推导出C源代码：

```asm
<kmain>:
  endbr64
  sub    $0x8,%rsp
  xor    %eax,%eax
  call   <gdt_init@plt>
  xor    %eax,%eax
  add    $0x8,%rsp
  jmp    1060 <hang@plt>
```

assistant: ```c
kmain() {
  gdt_init();
  hang();
}
```
user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<kmain>:
  endbr64
  sub    $0x8,%rsp
  xor    %eax,%eax
  call   <gdt_init@plt>
  xor    %eax,%eax
  add    $0x8,%rsp
  jmp    1060 <hang@plt>
```

assistant: ```c
kmain() {
  gdt_init();
  hang();
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<spn_typetag_name>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x10,%rsp
  mov    %edi,-0x4(%rbp)
  mov    -0x4(%rbp),%eax
  cmp    $0x4,%eax
  setbe  %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  mov    -0x4(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  lea    D0(%rip),%rax
  mov    (%rdx,%rax,1),%rax
  leave
  ret
```

assistant: ```c
const char *spn_typetag_name(int ttag) {
  static const char *const typenames[] = {
      "nil", "bool", "number", "pointer", "object",
  };
  assert(ttag < (sizeof(typenames) / sizeof(typenames[0])));
  return typenames[ttag];
}
```
user: 请从给定的汇编指令推导出C源代码:

```asm
<spn_typetag_name>:
  endbr64
  push   %rbx
  mov    %edi,%ebx
  cmp    $0x4,%edi
  setbe  %dil
  movzbl %dil,%edi
  call   <assert@plt>
  movslq %ebx,%rbx
  lea    D6(%rip),%rax
  mov    (%rax,%rbx,8),%rax
  pop    %rbx
  ret
```

assistant: ```c
const char *spn_typetag_name(int ttag) {
  static const char *const typenames[] = {
      "nil", "bool", "number", "pointer", "object",
  };
  assert(ttag < (sizeof(typenames) / sizeof(typenames[0])));
  return typenames[ttag];
}
```
user: What is the c source code of the assembly code below:

```asm
<spn_typetag_name>:
  endbr64
  push   %rbx
  movslq %edi,%rbx
  xor    %edi,%edi
  cmp    $0x4,%ebx
  setbe  %dil
  call   <assert@plt>
  lea    D5(%rip),%rax
  mov    (%rax,%rbx,8),%rax
  pop    %rbx
  ret
```

assistant: ```c
const char *spn_typetag_name(int ttag) {
  static const char *const typenames[] = {
      "nil", "bool", "number", "pointer", "object",
  };
  assert(ttag < (sizeof(typenames) / sizeof(typenames[0])));
  return typenames[ttag];
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<spn_typetag_name>:
  endbr64
  push   %rbx
  movslq %edi,%rbx
  xor    %edi,%edi
  cmp    $0x4,%ebx
  setbe  %dil
  call   <assert@plt>
  lea    D6(%rip),%rax
  mov    (%rax,%rbx,8),%rax
  pop    %rbx
  ret
```

assistant: ```c
const char *spn_typetag_name(int ttag) {
  static const char *const typenames[] = {
      "nil", "bool", "number", "pointer", "object",
  };
  assert(ttag < (sizeof(typenames) / sizeof(typenames[0])));
  return typenames[ttag];
}
```
user: Translate the below assembly code into C programming language:

```asm
<ltr_int_transpose_in_place>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x10,%rsp
  mov    %rdi,-0x8(%rbp)
  mov    -0x8(%rbp),%rax
  add    $0x18,%rax
  mov    %rax,%rdx
  mov    -0x8(%rbp),%rax
  add    $0x8,%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <swp@plt>
  mov    -0x8(%rbp),%rax
  add    $0x30,%rax
  mov    %rax,%rdx
  mov    -0x8(%rbp),%rax
  add    $0x10,%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <swp@plt>
  mov    -0x8(%rbp),%rax
  add    $0x30,%rax
  lea    0x8(%rax),%rdx
  mov    -0x8(%rbp),%rax
  add    $0x18,%rax
  add    $0x10,%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <swp@plt>
  nop
  leave
  ret
```

assistant: ```c
void ltr_int_transpose_in_place(double matrix[3][3]) {
  swp(&matrix[0][1], &matrix[1][0]);
  swp(&matrix[0][2], &matrix[2][0]);
  swp(&matrix[1][2], &matrix[2][1]);
}
```
user: 请将以下的汇编代码转换成C语言代码:

```asm
<ltr_int_transpose_in_place>:
  endbr64
  push   %rbx
  mov    %rdi,%rbx
  lea    0x18(%rdi),%rsi
  lea    0x8(%rdi),%rdi
  call   <swp@plt>
  lea    0x30(%rbx),%rsi
  lea    0x10(%rbx),%rdi
  call   <swp@plt>
  lea    0x38(%rbx),%rsi
  lea    0x28(%rbx),%rdi
  call   <swp@plt>
  pop    %rbx
  ret
```

assistant: ```c
void ltr_int_transpose_in_place(double matrix[3][3]) {
  swp(&matrix[0][1], &matrix[1][0]);
  swp(&matrix[0][2], &matrix[2][0]);
  swp(&matrix[1][2], &matrix[2][1]);
}
```