ylfeng/ReF-Decompile-dataset huggingface dataset:
user: Converte this assembly snippet into its equivalent C code:

```asm
<island_perimeter>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x28,%rsp
  test   %esi,%esi
  jle    L53
  movslq %edx,%rax
  mov    %rdi,%r13
  mov    %esi,%r12d
  mov    %edx,%r15d
  movl   $0x0,0x4(%rsp)
  mov    %rdi,%r14
  mov    %rax,%r11
  movl   $0x0,0x8(%rsp)
  nopl   0x0(%rax)
L57:
  mov    0x4(%rsp),%ecx
  xor    %ebx,%ebx
  mov    %ecx,%eax
  mov    %ecx,(%rsp)
  add    $0x1,%ecx
  sub    $0x1,%eax
  mov    %ecx,0x4(%rsp)
  mov    %eax,0x1c(%rsp)
  test   %r15d,%r15d
  jle    L73
  mov    %r15d,%eax
  mov    %r14,%r15
  mov    %r12d,%r14d
  mov    %eax,%r12d
  jmp    L42
L37:
  add    $0x1,%rbx
  cmp    %rbx,%r11
  je     L4
L42:
  mov    (%r15),%rax
  lea    0x1(%rbx),%r9d
  mov    (%rax,%rbx,4),%eax
  test   %eax,%eax
  je     L37
  mov    (%rsp),%esi
  lea    -0x1(%rbx),%edx
  mov    %r12d,%r8d
  mov    %r14d,%ecx
  mov    %r13,%rdi
  mov    %r11,0x10(%rsp)
  mov    %r9d,0x18(%rsp)
  mov    %ebx,0xc(%rsp)
  add    $0x1,%rbx
  call   <is_a_perimeter@plt>
  mov    0xc(%rsp),%edx
  mov    0x1c(%rsp),%esi
  mov    %r12d,%r8d
  mov    %r14d,%ecx
  mov    %r13,%rdi
  mov    %rax,%rbp
  call   <is_a_perimeter@plt>
  mov    0x18(%rsp),%edx
  mov    (%rsp),%esi
  mov    %r12d,%r8d
  mov    %r14d,%ecx
  mov    %r13,%rdi
  add    %eax,%ebp
  add    0x8(%rsp),%ebp
  call   <is_a_perimeter@plt>
  mov    0xc(%rsp),%edx
  mov    0x4(%rsp),%esi
  mov    %r12d,%r8d
  mov    %r14d,%ecx
  mov    %r13,%rdi
  add    %eax,%ebp
  call   <is_a_perimeter@plt>
  mov    0x10(%rsp),%r11
  add    %ebp,%eax
  mov    %eax,0x8(%rsp)
  cmp    %rbx,%r11
  jne    L42
L4:
  mov    %r12d,%eax
  mov    %r14d,%r12d
  mov    %r15,%r14
  mov    %eax,%r15d
L73:
  add    $0x8,%r14
  cmp    0x4(%rsp),%r12d
  jne    L57
L67:
  mov    0x8(%rsp),%eax
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L53:
  movl   $0x0,0x8(%rsp)
  jmp    L67
```

assistant: ```c
int island_perimeter(int **grid, int height, int width) {
  int perimeter = 0;
  for (int y = 0; y < height; y++) {
    for (int x = 0; x < width; x++) {
      if (grid[y][x]) {
        perimeter += is_a_perimeter(grid, y, x - 1, height, width);
        perimeter += is_a_perimeter(grid, y - 1, x, height, width);
        perimeter += is_a_perimeter(grid, y, x + 1, height, width);
        perimeter += is_a_perimeter(grid, y + 1, x, height, width);
      }
    }
  }
  return perimeter;
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<checkIfNeeded>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x8(%rbp)
  mov    %esi,-0xc(%rbp)
  mov    %edx,-0x10(%rbp)
  mov    -0xc(%rbp),%eax
  cmp    -0x10(%rbp),%eax
  jne    L29
  mov    $0x0,%eax
  jmp    L37
L29:
  mov    -0xc(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x8(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rdx
  mov    -0x10(%rbp),%eax
  cltq
  shl    $0x2,%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  cmp    $0x1,%eax
  jne    L7
  mov    $0x0,%eax
  jmp    L37
L7:
  mov    -0xc(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x8(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rdx
  mov    -0x10(%rbp),%eax
  cltq
  shl    $0x2,%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  cmp    $0x2,%eax
  jne    L44
  mov    $0x0,%eax
  jmp    L37
L44:
  mov    $0x1,%eax
L37:
  pop    %rbp
  ret
```

assistant: ```c
int checkIfNeeded(uint8_t **forceMark, int bA, int bB) {
  if (bA == bB)
    return 0;
  if (forceMark[bA][bB] == 1)
    return 0;
  if (forceMark[bA][bB] == 2)
    return 0;
  return 1;
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<checkIfNeeded>:
  endbr64
  mov    $0x0,%eax
  cmp    %edx,%esi
  je     L9
  movslq %esi,%rsi
  movslq %edx,%rdx
  mov    (%rdi,%rsi,8),%rax
  mov    (%rax,%rdx,4),%eax
  sub    $0x1,%eax
  cmp    $0x1,%eax
  seta   %al
  movzbl %al,%eax
L9:
  ret
```

assistant: ```c
int checkIfNeeded(uint8_t **forceMark, int bA, int bB) {
  if (bA == bB)
    return 0;
  if (forceMark[bA][bB] == 1)
    return 0;
  if (forceMark[bA][bB] == 2)
    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
<checkIfNeeded>:
  endbr64
  xor    %eax,%eax
  cmp    %edx,%esi
  je     L9
  movslq %esi,%rsi
  movslq %edx,%rdx
  mov    (%rdi,%rsi,8),%rax
  mov    (%rax,%rdx,4),%eax
  sub    $0x1,%eax
  cmp    $0x1,%eax
  seta   %al
  movzbl %al,%eax
L9:
  ret
```

assistant: ```c
int checkIfNeeded(uint8_t **forceMark, int bA, int bB) {
  if (bA == bB)
    return 0;
  if (forceMark[bA][bB] == 1)
    return 0;
  if (forceMark[bA][bB] == 2)
    return 0;
  return 1;
}
```
user: 请将这段汇编代码片段转换成等效的C代码:

```asm
<checkIfNeeded>:
  endbr64
  xor    %eax,%eax
  cmp    %edx,%esi
  je     L3
  movslq %esi,%rsi
  movslq %edx,%rdx
  mov    (%rdi,%rsi,8),%rax
  mov    (%rax,%rdx,4),%eax
  sub    $0x1,%eax
  cmp    $0x1,%eax
  seta   %al
  movzbl %al,%eax
L3:
  ret
```

assistant: ```c
int checkIfNeeded(uint8_t **forceMark, int bA, int bB) {
  if (bA == bB)
    return 0;
  if (forceMark[bA][bB] == 1)
    return 0;
  if (forceMark[bA][bB] == 2)
    return 0;
  return 1;
}
```
user: 请从给定的汇编指令推导出C源代码:

```asm
<eunlink>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x18(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  lea    -0xc(%rbp),%rdx
  mov    -0x18(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <lstat@plt>
  cmp    $0xffffffff,%eax
  jne    L6
  mov    $0xffffffff,%eax
  jmp    L33
L6:
  mov    -0xc(%rbp),%eax
  mov    %eax,%edi
  call   <S_ISDIR@plt>
  test   %rax,%rax
  je     L44
  mov    D2(%rip),%rax
  mov    (%rax),%edx
  mov    D3(%rip),%rax
  mov    %edx,(%rax)
  mov    $0xffffffff,%eax
  jmp    L33
L44:
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <unlink@plt>
L33:
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L17
  call   <__stack_chk_fail@plt>
L17:
  leave
  ret
```

assistant: ```c
int eunlink(const char *file) {
  struct stat st;
  if (lstat(file, &st) == -1)
    return (-1);
  if (S_ISDIR(st.st_mode)) {
    errno = EISDIR;
    return (-1);
  }
  return (unlink(file));
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<eunlink>:
  endbr64
  push   %rbx
  sub    $0x10,%rsp
  mov    %rdi,%rbx
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  lea    0x4(%rsp),%rsi
  call   <lstat@plt>
  cmp    $0xffffffff,%eax
  je     L39
  mov    0x4(%rsp),%edi
  call   <S_ISDIR@plt>
  test   %rax,%rax
  jne    L6
  mov    %rbx,%rdi
  call   <unlink@plt>
L39:
  mov    0x8(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L16
  add    $0x10,%rsp
  pop    %rbx
  ret
L6:
  mov    D2(%rip),%rax
  mov    (%rax),%edx
  mov    D4(%rip),%rax
  mov    %edx,(%rax)
  mov    $0xffffffff,%eax
  jmp    L39
L16:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int eunlink(const char *file) {
  struct stat st;
  if (lstat(file, &st) == -1)
    return (-1);
  if (S_ISDIR(st.st_mode)) {
    errno = EISDIR;
    return (-1);
  }
  return (unlink(file));
}
```
user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<eunlink>:
  endbr64
  push   %rbp
  mov    %rdi,%rbp
  sub    $0x10,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  lea    0x4(%rsp),%rsi
  call   <lstat@plt>
  cmp    $0xffffffff,%eax
  je     L35
  mov    0x4(%rsp),%edi
  call   <S_ISDIR@plt>
  test   %rax,%rax
  jne    L31
  mov    %rbp,%rdi
  call   <unlink@plt>
L35:
  mov    0x8(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L15
  add    $0x10,%rsp
  pop    %rbp
  ret
  nopw   0x0(%rax,%rax,1)
L31:
  mov    D9(%rip),%rax
  mov    (%rax),%edx
  mov    D3(%rip),%rax
  mov    %edx,(%rax)
  mov    $0xffffffff,%eax
  jmp    L35
L15:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int eunlink(const char *file) {
  struct stat st;
  if (lstat(file, &st) == -1)
    return (-1);
  if (S_ISDIR(st.st_mode)) {
    errno = EISDIR;
    return (-1);
  }
  return (unlink(file));
}
```
user: What would the C source look like for the assembly code provided here:

```asm
<eunlink>:
  endbr64
  push   %rbp
  mov    %rdi,%rbp
  sub    $0x10,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  lea    0x4(%rsp),%rsi
  call   <lstat@plt>
  cmp    $0xffffffff,%eax
  je     L33
  mov    0x4(%rsp),%edi
  call   <S_ISDIR@plt>
  test   %rax,%rax
  jne    L17
  mov    %rbp,%rdi
  call   <unlink@plt>
L33:
  mov    0x8(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L0
  add    $0x10,%rsp
  pop    %rbp
  ret
  nopw   0x0(%rax,%rax,1)
L17:
  mov    D19(%rip),%rax
  mov    (%rax),%edx
  mov    D2(%rip),%rax
  mov    %edx,(%rax)
  mov    $0xffffffff,%eax
  jmp    L33
L0:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int eunlink(const char *file) {
  struct stat st;
  if (lstat(file, &st) == -1)
    return (-1);
  if (S_ISDIR(st.st_mode)) {
    errno = EISDIR;
    return (-1);
  }
  return (unlink(file));
}
```
user: What would the C source look like for the assembly code provided here:

```asm
<bn_mul_low_recursive>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x18,%rsp
  mov    %rdi,%rbp
  mov    %rsi,%r13
  mov    %rdx,%r14
  mov    %ecx,%r15d
  mov    %r8,%r12
  mov    %ecx,%ebx
  shr    $0x1f,%ebx
  add    %ecx,%ebx
  sar    %ebx
  mov    %ebx,%ecx
  call   <bn_mul_recursive@plt>
  cmp    $0x3f,%r15d
  jle    L16
  movslq %r15d,%r15
  lea    (%r12,%r15,8),%r15
  movslq %ebx,%rax
  shl    $0x3,%rax
  mov    %rax,0x8(%rsp)
  lea    (%r14,%rax,1),%rdx
  mov    %r15,%r8
  mov    %ebx,%ecx
  mov    %r13,%rsi
  mov    %r12,%rdi
  call   <bn_mul_low_recursive>
  add    0x8(%rsp),%rbp
  mov    %ebx,%ecx
  mov    %r12,%rdx
  mov    %rbp,%rsi
  mov    %rbp,%rdi
  call   <bn_add_words@plt>
  mov    0x8(%rsp),%rax
  lea    0x0(%r13,%rax,1),%rsi
  mov    %r15,%r8
  mov    %ebx,%ecx
  mov    %r14,%rdx
  mov    %r12,%rdi
  call   <bn_mul_low_recursive>
  mov    %ebx,%ecx
  mov    %r12,%rdx
  mov    %rbp,%rsi
  mov    %rbp,%rdi
  call   <bn_add_words@plt>
L14:
  add    $0x18,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L16:
  movslq %ebx,%rax
  lea    0x0(,%rax,8),%r15
  lea    (%r14,%r15,1),%rdx
  mov    %ebx,%ecx
  mov    %r13,%rsi
  mov    %r12,%rdi
  call   <bn_mul_low_normal@plt>
  mov    %r15,%rax
  lea    (%r12,%r15,1),%r15
  mov    %rax,0x8(%rsp)
  lea    0x0(%r13,%rax,1),%rsi
  mov    %ebx,%ecx
  mov    %r14,%rdx
  mov    %r15,%rdi
  call   <bn_mul_low_normal@plt>
  add    0x8(%rsp),%rbp
  mov    %ebx,%ecx
  mov    %r12,%rdx
  mov    %rbp,%rsi
  mov    %rbp,%rdi
  call   <bn_add_words@plt>
  mov    %ebx,%ecx
  mov    %r15,%rdx
  mov    %rbp,%rsi
  mov    %rbp,%rdi
  call   <bn_add_words@plt>
  jmp    L14
```

assistant: ```c
void bn_mul_low_recursive(unsigned long long *r, unsigned long long *a, unsigned long long *b, int n2, unsigned long long *t) {
  int n = n2 / 2;
  bn_mul_recursive(r, a, b, n, &(t[0]));
  if (n >= (32)) {
    bn_mul_low_recursive(&(t[0]), &(a[0]), &(b[n]), n, &(t[n2]));
    bn_add_words(&(r[n]), &(r[n]), &(t[0]), n);
    bn_mul_low_recursive(&(t[0]), &(a[n]), &(b[0]), n, &(t[n2]));
    bn_add_words(&(r[n]), &(r[n]), &(t[0]), n);
  } else {
    bn_mul_low_normal(&(t[0]), &(a[0]), &(b[n]), n);
    bn_mul_low_normal(&(t[n]), &(a[n]), &(b[0]), n);
    bn_add_words(&(r[n]), &(r[n]), &(t[0]), n);
    bn_add_words(&(r[n]), &(r[n]), &(t[n]), n);
  }
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<bn_mul_low_recursive>:
  endbr64
  push   %r15
  mov    %rdx,%r15
  push   %r14
  mov    %r8,%r14
  push   %r13
  movslq %ecx,%r13
  push   %r12
  mov    %r13d,%r12d
  push   %rbp
  shr    $0x1f,%r12d
  mov    %rdi,%rbp
  push   %rbx
  add    %r13d,%r12d
  sar    %r12d
  mov    %r12d,%ecx
  movslq %r12d,%rbx
  sub    $0x18,%rsp
  shl    $0x3,%rbx
  mov    %rsi,0x8(%rsp)
  add    %rbx,%rbp
  call   <bn_mul_recursive@plt>
  mov    0x8(%rsp),%rsi
  lea    (%r15,%rbx,1),%rdx
  lea    (%rsi,%rbx,1),%r9
  mov    %r9,0x8(%rsp)
  cmp    $0x3f,%r13d
  jle    L12
  lea    (%r14,%r13,8),%rbx
  mov    %r12d,%ecx
  mov    %r14,%rdi
  mov    %rbx,%r8
  call   <bn_mul_low_recursive>
  mov    %r12d,%ecx
  mov    %r14,%rdx
  mov    %rbp,%rsi
  mov    %rbp,%rdi
  call   <bn_add_words@plt>
  mov    0x8(%rsp),%rsi
  mov    %r12d,%ecx
  mov    %r15,%rdx
  mov    %rbx,%r8
  mov    %r14,%rdi
  call   <bn_mul_low_recursive>
  mov    %r12d,%ecx
  mov    %r14,%rdx
L3:
  add    $0x18,%rsp
  mov    %rbp,%rsi
  mov    %rbp,%rdi
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    1090 <bn_add_words@plt>
  nopw   0x0(%rax,%rax,1)
L12:
  mov    %r12d,%ecx
  mov    %r14,%rdi
  lea    (%r14,%rbx,1),%r13
  call   <bn_mul_low_normal@plt>
  mov    0x8(%rsp),%rsi
  mov    %r12d,%ecx
  mov    %r15,%rdx
  mov    %r13,%rdi
  call   <bn_mul_low_normal@plt>
  mov    %r12d,%ecx
  mov    %r14,%rdx
  mov    %rbp,%rsi
  mov    %rbp,%rdi
  call   <bn_add_words@plt>
  mov    %r12d,%ecx
  mov    %r13,%rdx
  jmp    L3
```

assistant: ```c
void bn_mul_low_recursive(unsigned long long *r, unsigned long long *a, unsigned long long *b, int n2, unsigned long long *t) {
  int n = n2 / 2;
  bn_mul_recursive(r, a, b, n, &(t[0]));
  if (n >= (32)) {
    bn_mul_low_recursive(&(t[0]), &(a[0]), &(b[n]), n, &(t[n2]));
    bn_add_words(&(r[n]), &(r[n]), &(t[0]), n);
    bn_mul_low_recursive(&(t[0]), &(a[n]), &(b[0]), n, &(t[n2]));
    bn_add_words(&(r[n]), &(r[n]), &(t[0]), n);
  } else {
    bn_mul_low_normal(&(t[0]), &(a[0]), &(b[n]), n);
    bn_mul_low_normal(&(t[n]), &(a[n]), &(b[0]), n);
    bn_add_words(&(r[n]), &(r[n]), &(t[0]), n);
    bn_add_words(&(r[n]), &(r[n]), &(t[n]), n);
  }
}
```
user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<bn_mul_low_recursive>:
  endbr64
  push   %r15
  mov    %rdx,%r15
  push   %r14
  mov    %r8,%r14
  push   %r13
  movslq %ecx,%r13
  push   %r12
  mov    %r13d,%r12d
  push   %rbp
  shr    $0x1f,%r12d
  mov    %rdi,%rbp
  push   %rbx
  add    %r13d,%r12d
  sar    %r12d
  mov    %r12d,%ecx
  movslq %r12d,%rbx
  sub    $0x18,%rsp
  shl    $0x3,%rbx
  mov    %rsi,0x8(%rsp)
  add    %rbx,%rbp
  call   <bn_mul_recursive@plt>
  mov    0x8(%rsp),%rsi
  lea    (%r15,%rbx,1),%rdx
  lea    (%rsi,%rbx,1),%r9
  mov    %r9,0x8(%rsp)
  cmp    $0x3f,%r13d
  jle    L7
  lea    (%r14,%r13,8),%rbx
  mov    %r12d,%ecx
  mov    %r14,%rdi
  mov    %rbx,%r8
  call   <bn_mul_low_recursive>
  mov    %r12d,%ecx
  mov    %r14,%rdx
  mov    %rbp,%rsi
  mov    %rbp,%rdi
  call   <bn_add_words@plt>
  mov    0x8(%rsp),%rsi
  mov    %r12d,%ecx
  mov    %r15,%rdx
  mov    %rbx,%r8
  mov    %r14,%rdi
  call   <bn_mul_low_recursive>
  mov    %r12d,%ecx
  mov    %r14,%rdx
L1:
  add    $0x18,%rsp
  mov    %rbp,%rsi
  mov    %rbp,%rdi
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    1090 <bn_add_words@plt>
  nopw   0x0(%rax,%rax,1)
L7:
  mov    %r12d,%ecx
  mov    %r14,%rdi
  lea    (%r14,%rbx,1),%r13
  call   <bn_mul_low_normal@plt>
  mov    0x8(%rsp),%rsi
  mov    %r12d,%ecx
  mov    %r15,%rdx
  mov    %r13,%rdi
  call   <bn_mul_low_normal@plt>
  mov    %r12d,%ecx
  mov    %r14,%rdx
  mov    %rbp,%rsi
  mov    %rbp,%rdi
  call   <bn_add_words@plt>
  mov    %r12d,%ecx
  mov    %r13,%rdx
  jmp    L1
```

assistant: ```c
void bn_mul_low_recursive(unsigned long long *r, unsigned long long *a, unsigned long long *b, int n2, unsigned long long *t) {
  int n = n2 / 2;
  bn_mul_recursive(r, a, b, n, &(t[0]));
  if (n >= (32)) {
    bn_mul_low_recursive(&(t[0]), &(a[0]), &(b[n]), n, &(t[n2]));
    bn_add_words(&(r[n]), &(r[n]), &(t[0]), n);
    bn_mul_low_recursive(&(t[0]), &(a[n]), &(b[0]), n, &(t[n2]));
    bn_add_words(&(r[n]), &(r[n]), &(t[0]), n);
  } else {
    bn_mul_low_normal(&(t[0]), &(a[0]), &(b[n]), n);
    bn_mul_low_normal(&(t[n]), &(a[n]), &(b[0]), n);
    bn_add_words(&(r[n]), &(r[n]), &(t[0]), n);
    bn_add_words(&(r[n]), &(r[n]), &(t[n]), n);
  }
}
```
user: What is the c source code of the assembly code below:

```asm
<tunSetIpMaskDst>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %rdi,-0x18(%rbp)
  mov    %esi,-0x1c(%rbp)
  mov    %edx,-0x20(%rbp)
  mov    %ecx,-0x24(%rbp)
  mov    -0x1c(%rbp),%edx
  mov    -0x18(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <tunSetIp@plt>
  mov    %eax,-0x4(%rbp)
  cmpl   $0x0,-0x4(%rbp)
  jns    L51
  mov    -0x4(%rbp),%eax
  jmp    L40
L51:
  mov    -0x20(%rbp),%edx
  mov    -0x18(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <tunSetMask@plt>
  mov    %eax,-0x4(%rbp)
  cmpl   $0x0,-0x4(%rbp)
  jns    L19
  mov    -0x4(%rbp),%eax
  jmp    L40
L19:
  mov    -0x24(%rbp),%edx
  mov    -0x18(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <tunSetDst@plt>
  mov    %eax,-0x4(%rbp)
  cmpl   $0x0,-0x4(%rbp)
  jns    L4
  mov    -0x4(%rbp),%eax
  jmp    L40
L4:
  mov    $0x0,%eax
L40:
  leave
  ret
```

assistant: ```c
int tunSetIpMaskDst(const char *dev, uint32_t ip, uint32_t mask, uint32_t dst) {
  int err;
  if ((err = tunSetIp(dev, ip)) < 0) {
    return err;
  }
  if ((err = tunSetMask(dev, mask)) < 0) {
    return err;
  }
  if ((err = tunSetDst(dev, dst)) < 0) {
    return err;
  }
  return 0;
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<tunSetIpMaskDst>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%rbx
  mov    %edx,%r12d
  mov    %ecx,%ebp
  call   <tunSetIp@plt>
  test   %eax,%eax
  js     L10
  mov    %r12d,%esi
  mov    %rbx,%rdi
  call   <tunSetMask@plt>
  test   %eax,%eax
  js     L10
  mov    %ebp,%esi
  mov    %rbx,%rdi
  call   <tunSetDst@plt>
  test   %eax,%eax
  mov    $0x0,%edx
  cmovg  %edx,%eax
L10:
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
```

assistant: ```c
int tunSetIpMaskDst(const char *dev, uint32_t ip, uint32_t mask, uint32_t dst) {
  int err;
  if ((err = tunSetIp(dev, ip)) < 0) {
    return err;
  }
  if ((err = tunSetMask(dev, mask)) < 0) {
    return err;
  }
  if ((err = tunSetDst(dev, dst)) < 0) {
    return err;
  }
  return 0;
}
```
user: What is the c source code of the assembly code below:

```asm
<tunSetIpMaskDst>:
  endbr64
  push   %r13
  mov    %edx,%r13d
  push   %r12
  mov    %ecx,%r12d
  push   %rbp
  mov    %rdi,%rbp
  call   <tunSetIp@plt>
  test   %eax,%eax
  js     L19
  mov    %r13d,%esi
  mov    %rbp,%rdi
  call   <tunSetMask@plt>
  test   %eax,%eax
  js     L19
  mov    %r12d,%esi
  mov    %rbp,%rdi
  call   <tunSetDst@plt>
  xor    %edx,%edx
  test   %eax,%eax
  cmovg  %edx,%eax
L19:
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
```

assistant: ```c
int tunSetIpMaskDst(const char *dev, uint32_t ip, uint32_t mask, uint32_t dst) {
  int err;
  if ((err = tunSetIp(dev, ip)) < 0) {
    return err;
  }
  if ((err = tunSetMask(dev, mask)) < 0) {
    return err;
  }
  if ((err = tunSetDst(dev, dst)) < 0) {
    return err;
  }
  return 0;
}
```
user: Translate the below assembly code into C programming language:

```asm
<tunSetIpMaskDst>:
  endbr64
  push   %r13
  mov    %edx,%r13d
  push   %r12
  mov    %ecx,%r12d
  push   %rbp
  mov    %rdi,%rbp
  call   <tunSetIp@plt>
  test   %eax,%eax
  js     L14
  mov    %r13d,%esi
  mov    %rbp,%rdi
  call   <tunSetMask@plt>
  test   %eax,%eax
  js     L14
  mov    %r12d,%esi
  mov    %rbp,%rdi
  call   <tunSetDst@plt>
  xor    %edx,%edx
  test   %eax,%eax
  cmovg  %edx,%eax
L14:
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
```

assistant: ```c
int tunSetIpMaskDst(const char *dev, uint32_t ip, uint32_t mask, uint32_t dst) {
  int err;
  if ((err = tunSetIp(dev, ip)) < 0) {
    return err;
  }
  if ((err = tunSetMask(dev, mask)) < 0) {
    return err;
  }
  if ((err = tunSetDst(dev, dst)) < 0) {
    return err;
  }
  return 0;
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<v4l2_set_output_by_name>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %edi,-0x34(%rbp)
  mov    %rsi,-0x40(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movl   $0x0,-0x20(%rbp)
  movl   $0xffffffff,-0x24(%rbp)
  jmp    L26
L38:
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdx
  mov    -0x40(%rbp),%rax
  mov    %rax,%rsi
  mov    %rdx,%rdi
  call   <strcasecmp@plt>
  test   %rax,%rax
  jne    L45
  mov    -0x20(%rbp),%eax
  mov    %eax,-0x24(%rbp)
  jmp    L6
L45:
  mov    -0x20(%rbp),%eax
  add    $0x1,%eax
  mov    %eax,-0x20(%rbp)
L26:
  mov    D4(%rip),%rax
  mov    (%rax),%ecx
  lea    -0x20(%rbp),%rdx
  mov    -0x34(%rbp),%eax
  mov    %ecx,%esi
  mov    %eax,%edi
  call   <ioctl@plt>
  test   %rax,%rax
  je     L38
L6:
  mov    -0x24(%rbp),%edx
  mov    -0x34(%rbp),%eax
  mov    %edx,%esi
  mov    %eax,%edi
  call   <v4l2_set_output_by_index@plt>
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L10
  call   <__stack_chk_fail@plt>
L10:
  leave
  ret
```

assistant: ```c
int __attribute__((unused)) v4l2_set_output_by_name(int videofd, const char *const name) {
  struct v4l2_output output;
  int output_idx;
  output.index = 0;
  output_idx = -1;
  while (ioctl(videofd, VIDIOC_ENUMOUTPUT, &output) == 0) {
    if (strcasecmp((char *)output.name, name) == 0) {
      output_idx = output.index;
      break;
    }
    ++output.index;
  }
  return v4l2_set_output_by_index(videofd, output_idx);
}
```
user: What would the C source look like for the assembly code provided here?

```asm
<v4l2_set_output_by_name>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x20,%rsp
  mov    %edi,%ebx
  mov    %rsi,%rbp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  mov    %rsp,%r12
  jmp    L29
L1:
  mov    (%rsp),%eax
  add    $0x1,%eax
L29:
  mov    %eax,(%rsp)
  mov    %r12,%rdx
  mov    D1(%rip),%rax
  mov    (%rax),%esi
  mov    %ebx,%edi
  call   <ioctl@plt>
  test   %rax,%rax
  jne    L25
  mov    %rbp,%rsi
  mov    0x8(%rsp),%rdi
  call   <strcasecmp@plt>
  test   %rax,%rax
  jne    L1
  mov    (%rsp),%esi
  jmp    L18
L25:
  mov    $0xffffffff,%esi
L18:
  mov    %ebx,%edi
  call   <v4l2_set_output_by_index@plt>
  mov    0x18(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L30
  add    $0x20,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
L30:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int __attribute__((unused)) v4l2_set_output_by_name(int videofd, const char *const name) {
  struct v4l2_output output;
  int output_idx;
  output.index = 0;
  output_idx = -1;
  while (ioctl(videofd, VIDIOC_ENUMOUTPUT, &output) == 0) {
    if (strcasecmp((char *)output.name, name) == 0) {
      output_idx = output.index;
      break;
    }
    ++output.index;
  }
  return v4l2_set_output_by_index(videofd, output_idx);
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<v4l2_set_output_by_name>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  mov    %edi,%ebp
  push   %rbx
  mov    %rsi,%rbx
  sub    $0x28,%rsp
  mov    D4(%rip),%r12
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  mov    %rsp,%r13
  jmp    L34
  nop
L0:
  mov    0x8(%rsp),%rdi
  mov    %rbx,%rsi
  call   <strcasecmp@plt>
  test   %rax,%rax
  je     L9
  mov    (%rsp),%eax
  add    $0x1,%eax
L34:
  mov    (%r12),%esi
  mov    %r13,%rdx
  mov    %ebp,%edi
  mov    %eax,(%rsp)
  call   <ioctl@plt>
  test   %rax,%rax
  je     L0
  mov    $0xffffffff,%esi
L19:
  mov    %ebp,%edi
  call   <v4l2_set_output_by_index@plt>
  mov    0x18(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L25
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopl   (%rax)
L9:
  mov    (%rsp),%esi
  jmp    L19
L25:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int __attribute__((unused)) v4l2_set_output_by_name(int videofd, const char *const name) {
  struct v4l2_output output;
  int output_idx;
  output.index = 0;
  output_idx = -1;
  while (ioctl(videofd, VIDIOC_ENUMOUTPUT, &output) == 0) {
    if (strcasecmp((char *)output.name, name) == 0) {
      output_idx = output.index;
      break;
    }
    ++output.index;
  }
  return v4l2_set_output_by_index(videofd, output_idx);
}
```