ylfeng/ReF-Decompile-dataset huggingface dataset:
user: Demonstrate the C code that generates the assembly output below:

```asm
<main>:
  endbr64
  push   %rbp
  lea    D4(%rip),%rbp
  mov    $0x1,%esi
  mov    %rbp,%rdi
  call   <printf@plt>
  mov    %rbp,%rdi
  mov    $0x2,%esi
  call   <printf@plt>
  xor    %eax,%eax
  call   <some_function@plt>
  mov    $0x2,%esi
  lea    D6(%rip),%rdi
  call   <printf@plt>
  xor    %eax,%eax
  call   <test@plt>
  xor    %eax,%eax
  pop    %rbp
  ret
```

tool_calls: name: extract_symbolic_data
arguments: data_label: D4
type_guessed: string
name: extract_symbolic_data
arguments: data_label: D6
type_guessed: string

tool: D4: i => %d


tool: D6: SOME UGLY HACK


assistant: ```c
int main() {
  int i;
  i = 1;
  printf("i => %d\n", i);
  i = 2;
  printf("i => %d\n", i);
  some_function();
  printf("SOME UGLY HACK\n", i);
  test();
  return 0;
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<main>:
  endbr64
  push   %rbp
  lea    D7(%rip),%rbp
  mov    $0x1,%esi
  mov    %rbp,%rdi
  call   <printf@plt>
  mov    %rbp,%rdi
  mov    $0x2,%esi
  call   <printf@plt>
  xor    %eax,%eax
  call   <some_function@plt>
  mov    $0x2,%esi
  lea    D12(%rip),%rdi
  call   <printf@plt>
  xor    %eax,%eax
  call   <test@plt>
  xor    %eax,%eax
  pop    %rbp
  ret
```

tool_calls: name: disassemble_data
arguments: label: D7
type_guessed: string
name: disassemble_data
arguments: label: D12
type_guessed: string

tool: D7: i => %d


tool: D12: SOME UGLY HACK


assistant: ```c
int main() {
  int i;
  i = 1;
  printf("i => %d\n", i);
  i = 2;
  printf("i => %d\n", i);
  some_function();
  printf("SOME UGLY HACK\n", i);
  test();
  return 0;
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<skrand>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %rbx
  sub    $0x28,%rsp
  mov    %edi,-0x24(%rbp)
  mov    -0x24(%rbp),%eax
  mov    %eax,%edi
  mov    $0x0,%eax
  call   <random@plt>
  mov    %eax,%ebx
  mov    -0x24(%rbp),%eax
  mov    %eax,%edi
  mov    $0x0,%eax
  call   <random@plt>
  add    %ebx,%eax
  mov    %eax,-0x14(%rbp)
  mov    -0x24(%rbp),%eax
  cmp    -0x14(%rbp),%eax
  jg     L7
  mov    -0x24(%rbp),%eax
  add    %eax,%eax
  sub    $0x1,%eax
  sub    -0x14(%rbp),%eax
  mov    %eax,-0x14(%rbp)
L7:
  mov    -0x14(%rbp),%eax
  mov    -0x8(%rbp),%rbx
  leave
  ret
```

assistant: ```c
skrand(range) {
  int temp;
  temp = random(range) + random(range);
  if (temp > range - 1)
    temp = 2 * range - 1 - temp;
  return (temp);
}
```
user: 这段汇编代码用C语言表示是什么样的？

```asm
<skrand>:
  endbr64
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    %edi,%ebp
  mov    $0x0,%eax
  call   <random@plt>
  mov    %eax,%ebx
  mov    %ebp,%edi
  mov    $0x0,%eax
  call   <random@plt>
  add    %ebx,%eax
  cmp    %eax,%ebp
  jg     L6
  lea    -0x1(%rbp,%rbp,1),%edx
  sub    %eax,%edx
  mov    %edx,%eax
L6:
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  ret
```

assistant: ```c
skrand(range) {
  int temp;
  temp = random(range) + random(range);
  if (temp > range - 1)
    temp = 2 * range - 1 - temp;
  return (temp);
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<skrand>:
  endbr64
  push   %rbp
  xor    %eax,%eax
  mov    %edi,%ebp
  push   %rbx
  sub    $0x8,%rsp
  call   <random@plt>
  mov    %ebp,%edi
  mov    %eax,%ebx
  xor    %eax,%eax
  call   <random@plt>
  add    %ebx,%eax
  cmp    %eax,%ebp
  jg     L7
  lea    -0x1(%rbp,%rbp,1),%edx
  sub    %eax,%edx
  mov    %edx,%eax
L7:
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  ret
```

assistant: ```c
skrand(range) {
  int temp;
  temp = random(range) + random(range);
  if (temp > range - 1)
    temp = 2 * range - 1 - temp;
  return (temp);
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<skrand>:
  endbr64
  push   %rbp
  xor    %eax,%eax
  mov    %edi,%ebp
  push   %rbx
  sub    $0x8,%rsp
  call   <random@plt>
  mov    %ebp,%edi
  mov    %eax,%ebx
  xor    %eax,%eax
  call   <random@plt>
  add    %ebx,%eax
  cmp    %eax,%ebp
  jg     L6
  lea    -0x1(%rbp,%rbp,1),%edx
  sub    %eax,%edx
  mov    %edx,%eax
L6:
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  ret
```

assistant: ```c
skrand(range) {
  int temp;
  temp = random(range) + random(range);
  if (temp > range - 1)
    temp = 2 * range - 1 - temp;
  return (temp);
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<str_ltrim>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x18(%rbp)
  mov    -0x18(%rbp),%rax
  movzbl (%rax),%eax
  test   %al,%al
  jne    L38
  mov    $0x0,%eax
  jmp    L66
L38:
  movl   $0x0,-0x8(%rbp)
  jmp    L44
L0:
  addl   $0x1,-0x8(%rbp)
L44:
  mov    -0x8(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  cmp    $0x20,%al
  je     L0
  cmpl   $0x0,-0x8(%rbp)
  je     L1
  movl   $0x0,-0x4(%rbp)
  jmp    L60
L56:
  mov    -0x8(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    -0x4(%rbp),%edx
  movslq %edx,%rcx
  mov    -0x18(%rbp),%rdx
  add    %rcx,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
  addl   $0x1,-0x8(%rbp)
  addl   $0x1,-0x4(%rbp)
L60:
  mov    -0x8(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  test   %al,%al
  jne    L56
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movb   $0x0,(%rax)
L1:
  mov    -0x18(%rbp),%rax
L66:
  pop    %rbp
  ret
```

assistant: ```c
char *str_ltrim(char *src) {
  int i, j;
  if (src[0] == 0)
    return NULL;
  for (i = 0; src[i] == ' '; i++)
    ;
  if (i != 0) {
    for (j = 0; src[i]; i++, j++)
      src[j] = src[i];
    src[j] = 0;
  }
  return src;
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<str_ltrim>:
  endbr64
  mov    %rdi,%rax
  movzbl (%rdi),%edx
  test   %dl,%dl
  je     L37
  cmp    $0x20,%dl
  jne    L19
  mov    $0x1,%edx
L31:
  mov    %edx,%ecx
  add    $0x1,%rdx
  cmpb   $0x20,-0x1(%rax,%rdx,1)
  je     L31
  test   %ecx,%ecx
  je     L19
  movslq %ecx,%rcx
  add    %rax,%rcx
  movzbl (%rcx),%esi
  test   %sil,%sil
  je     L8
  mov    $0x1,%edx
L56:
  mov    %sil,-0x1(%rax,%rdx,1)
  mov    %edx,%edi
  add    $0x1,%rdx
  movzbl -0x1(%rcx,%rdx,1),%esi
  test   %sil,%sil
  jne    L56
L65:
  movslq %edi,%rdi
  movb   $0x0,(%rax,%rdi,1)
  ret
L8:
  mov    $0x0,%edi
  jmp    L65
L37:
  mov    $0x0,%eax
L19:
  ret
```

assistant: ```c
char *str_ltrim(char *src) {
  int i, j;
  if (src[0] == 0)
    return NULL;
  for (i = 0; src[i] == ' '; i++)
    ;
  if (i != 0) {
    for (j = 0; src[i]; i++, j++)
      src[j] = src[i];
    src[j] = 0;
  }
  return src;
}
```
user: 下面的汇编指令对应的C源代码是什么：

```asm
<str_ltrim>:
  endbr64
  movzbl (%rdi),%eax
  test   %al,%al
  je     L35
  cmp    $0x20,%al
  jne    L12
  mov    $0x1,%edx
  nopl   0x0(%rax)
L45:
  movslq %edx,%rax
  add    $0x1,%rdx
  movzbl -0x1(%rdi,%rdx,1),%ecx
  cmp    $0x20,%cl
  je     L45
  test   %cl,%cl
  je     L21
  mov    $0x1,%edx
  add    %rdi,%rax
  nopl   (%rax)
L31:
  mov    %cl,-0x1(%rdi,%rdx,1)
  movslq %edx,%rsi
  add    $0x1,%rdx
  movzbl -0x1(%rax,%rdx,1),%ecx
  test   %cl,%cl
  jne    L31
  add    %rdi,%rsi
L51:
  movb   $0x0,(%rsi)
  mov    %rdi,%rax
  ret
  cs nopw 0x0(%rax,%rax,1)
L35:
  xor    %eax,%eax
  ret
  nopl   0x0(%rax,%rax,1)
L12:
  mov    %rdi,%rax
  ret
  nopl   0x0(%rax)
L21:
  mov    %rdi,%rsi
  jmp    L51
```

assistant: ```c
char *str_ltrim(char *src) {
  int i, j;
  if (src[0] == 0)
    return NULL;
  for (i = 0; src[i] == ' '; i++)
    ;
  if (i != 0) {
    for (j = 0; src[i]; i++, j++)
      src[j] = src[i];
    src[j] = 0;
  }
  return src;
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<str_ltrim>:
  endbr64
  movzbl (%rdi),%eax
  test   %al,%al
  je     L40
  cmp    $0x20,%al
  jne    L27
  mov    $0x1,%edx
  nopl   0x0(%rax)
L52:
  movslq %edx,%rax
  add    $0x1,%rdx
  movzbl -0x1(%rdi,%rdx,1),%ecx
  cmp    $0x20,%cl
  je     L52
  test   %cl,%cl
  je     L18
  mov    $0x1,%edx
  add    %rdi,%rax
  nopl   (%rax)
L9:
  mov    %cl,-0x1(%rdi,%rdx,1)
  movslq %edx,%rsi
  add    $0x1,%rdx
  movzbl -0x1(%rax,%rdx,1),%ecx
  test   %cl,%cl
  jne    L9
  add    %rdi,%rsi
L50:
  movb   $0x0,(%rsi)
  mov    %rdi,%rax
  ret
  cs nopw 0x0(%rax,%rax,1)
L40:
  xor    %eax,%eax
  ret
  nopl   0x0(%rax,%rax,1)
L27:
  mov    %rdi,%rax
  ret
  nopl   0x0(%rax)
L18:
  mov    %rdi,%rsi
  jmp    L50
```

assistant: ```c
char *str_ltrim(char *src) {
  int i, j;
  if (src[0] == 0)
    return NULL;
  for (i = 0; src[i] == ' '; i++)
    ;
  if (i != 0) {
    for (j = 0; src[i]; i++, j++)
      src[j] = src[i];
    src[j] = 0;
  }
  return src;
}
```
user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<imax_vector>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x18(%rbp)
  mov    %esi,-0x1c(%rbp)
  mov    -0x18(%rbp),%rax
  mov    (%rax),%eax
  mov    %eax,-0x8(%rbp)
  movl   $0x1,-0x4(%rbp)
  jmp    L24
L19:
  mov    -0x4(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  cmp    %eax,-0x8(%rbp)
  jge    L7
  mov    -0x4(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  mov    %eax,-0x8(%rbp)
L7:
  addl   $0x1,-0x4(%rbp)
L24:
  mov    -0x4(%rbp),%eax
  cmp    -0x1c(%rbp),%eax
  jl     L19
  mov    -0x8(%rbp),%eax
  pop    %rbp
  ret
```

assistant: ```c
int imax_vector(const int *array, int n) {
  int max = array[0];
  for (int i = 1; i < n; i++) {
    if (array[i] > max)
      max = array[i];
  }
  return max;
}
```
user: What is the c source code of the assembly code below:

```asm
<imax_vector>:
  endbr64
  mov    (%rdi),%edx
  cmp    $0x1,%esi
  jle    L13
  lea    0x4(%rdi),%rax
  lea    -0x2(%rsi),%ecx
  lea    0x8(%rdi,%rcx,4),%rsi
L17:
  mov    (%rax),%ecx
  cmp    %ecx,%edx
  cmovl  %ecx,%edx
  add    $0x4,%rax
  cmp    %rsi,%rax
  jne    L17
L13:
  mov    %edx,%eax
  ret
```

assistant: ```c
int imax_vector(const int *array, int n) {
  int max = array[0];
  for (int i = 1; i < n; i++) {
    if (array[i] > max)
      max = array[i];
  }
  return max;
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<imax_vector>:
  endbr64
  mov    (%rdi),%r8d
  cmp    $0x1,%esi
  jle    L6
  lea    -0x2(%rsi),%edx
  lea    0x4(%rdi),%rax
  lea    0x8(%rdi,%rdx,4),%rcx
  nopl   0x0(%rax,%rax,1)
L17:
  mov    (%rax),%edx
  cmp    %edx,%r8d
  cmovl  %edx,%r8d
  add    $0x4,%rax
  cmp    %rcx,%rax
  jne    L17
L6:
  mov    %r8d,%eax
  ret
```

assistant: ```c
int imax_vector(const int *array, int n) {
  int max = array[0];
  for (int i = 1; i < n; i++) {
    if (array[i] > max)
      max = array[i];
  }
  return max;
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<imax_vector>:
  endbr64
  mov    (%rdi),%eax
  mov    %rdi,%rdx
  mov    %esi,%ecx
  cmp    $0x1,%esi
  jle    L31
  lea    -0x1(%rsi),%edi
  lea    -0x2(%rsi),%esi
  cmp    $0x2,%esi
  jbe    L7
  mov    %edi,%esi
  movd   %eax,%xmm3
  lea    0x4(%rdx),%rax
  shr    $0x2,%esi
  pshufd $0x0,%xmm3,%xmm0
  sub    $0x1,%esi
  shl    $0x4,%rsi
  lea    0x14(%rdx,%rsi,1),%rsi
  nopl   0x0(%rax)
L2:
  movdqu (%rax),%xmm1
  add    $0x10,%rax
  movdqa %xmm1,%xmm2
  pcmpgtd %xmm0,%xmm2
  pand   %xmm2,%xmm1
  pandn  %xmm0,%xmm2
  movdqa %xmm2,%xmm0
  por    %xmm1,%xmm0
  cmp    %rsi,%rax
  jne    L2
  movdqa %xmm0,%xmm2
  mov    %edi,%r8d
  psrldq $0x8,%xmm2
  and    $0xfffffffc,%r8d
  movdqa %xmm2,%xmm1
  lea    0x1(%r8),%esi
  pcmpgtd %xmm0,%xmm1
  pand   %xmm1,%xmm2
  pandn  %xmm0,%xmm1
  por    %xmm2,%xmm1
  movdqa %xmm1,%xmm2
  psrldq $0x4,%xmm2
  movdqa %xmm2,%xmm0
  pcmpgtd %xmm1,%xmm0
  pand   %xmm0,%xmm2
  pandn  %xmm1,%xmm0
  por    %xmm2,%xmm0
  movd   %xmm0,%eax
  cmp    %r8d,%edi
  je     L57
L28:
  movslq %esi,%rdi
  lea    0x0(,%rdi,4),%r8
  mov    (%rdx,%rdi,4),%edi
  cmp    %edi,%eax
  cmovl  %edi,%eax
  lea    0x1(%rsi),%edi
  cmp    %edi,%ecx
  jle    L31
  mov    0x4(%rdx,%r8,1),%edi
  cmp    %edi,%eax
  cmovl  %edi,%eax
  add    $0x2,%esi
  cmp    %esi,%ecx
  jle    L31
  mov    0x8(%rdx,%r8,1),%edx
  cmp    %edx,%eax
  cmovl  %edx,%eax
L31:
  ret
  nopl   0x0(%rax)
L57:
  ret
L7:
  mov    $0x1,%esi
  jmp    L28
```

assistant: ```c
int imax_vector(const int *array, int n) {
  int max = array[0];
  for (int i = 1; i < n; i++) {
    if (array[i] > max)
      max = array[i];
  }
  return max;
}
```
user: What is the c source code of the assembly code below?

```asm
<os_ioctl_generic>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %edi,-0x14(%rbp)
  mov    %esi,-0x18(%rbp)
  mov    %rdx,-0x20(%rbp)
  mov    -0x20(%rbp),%rdx
  mov    -0x18(%rbp),%ecx
  mov    -0x14(%rbp),%eax
  mov    %ecx,%esi
  mov    %eax,%edi
  call   <ioctl@plt>
  mov    %eax,-0x4(%rbp)
  cmpl   $0x0,-0x4(%rbp)
  jns    L18
  mov    D4(%rip),%rax
  mov    (%rax),%eax
  neg    %eax
  jmp    L14
L18:
  mov    -0x4(%rbp),%eax
L14:
  leave
  ret
```

assistant: ```c
int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg) {
  int err;
  err = ioctl(fd, cmd, arg);
  if (err < 0)
    return -errno;
  return err;
}
```
user: Translate the below assembly code into C programming language:

```asm
<os_ioctl_generic>:
  endbr64
  sub    $0x8,%rsp
  call   <ioctl@plt>
  test   %eax,%eax
  js     L6
L3:
  add    $0x8,%rsp
  ret
L6:
  mov    D6(%rip),%rax
  mov    (%rax),%eax
  neg    %eax
  jmp    L3
```

assistant: ```c
int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg) {
  int err;
  err = ioctl(fd, cmd, arg);
  if (err < 0)
    return -errno;
  return err;
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<os_ioctl_generic>:
  endbr64
  sub    $0x8,%rsp
  call   <ioctl@plt>
  test   %eax,%eax
  js     L4
  add    $0x8,%rsp
  ret
  cs nopw 0x0(%rax,%rax,1)
L4:
  mov    D4(%rip),%rax
  mov    (%rax),%eax
  add    $0x8,%rsp
  neg    %eax
  ret
```

assistant: ```c
int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg) {
  int err;
  err = ioctl(fd, cmd, arg);
  if (err < 0)
    return -errno;
  return err;
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<os_ioctl_generic>:
  endbr64
  sub    $0x8,%rsp
  call   <ioctl@plt>
  test   %eax,%eax
  js     L5
  add    $0x8,%rsp
  ret
  cs nopw 0x0(%rax,%rax,1)
L5:
  mov    D7(%rip),%rax
  mov    (%rax),%eax
  add    $0x8,%rsp
  neg    %eax
  ret
```

assistant: ```c
int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg) {
  int err;
  err = ioctl(fd, cmd, arg);
  if (err < 0)
    return -errno;
  return err;
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<normalize_timespec>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x8(%rbp)
  jmp    L33
L38:
  mov    -0x8(%rbp),%rax
  mov    (%rax),%rax
  lea    0x3b9aca00(%rax),%rdx
  mov    -0x8(%rbp),%rax
  mov    %rdx,(%rax)
  mov    -0x8(%rbp),%rax
  mov    0x8(%rax),%eax
  lea    -0x1(%rax),%edx
  mov    -0x8(%rbp),%rax
  mov    %edx,0x8(%rax)
L33:
  mov    -0x8(%rbp),%rax
  mov    (%rax),%rax
  test   %rax,%rax
  js     L38
  jmp    L15
L28:
  mov    -0x8(%rbp),%rax
  mov    (%rax),%rax
  lea    -0x3b9aca00(%rax),%rdx
  mov    -0x8(%rbp),%rax
  mov    %rdx,(%rax)
  mov    -0x8(%rbp),%rax
  mov    0x8(%rax),%eax
  lea    0x1(%rax),%edx
  mov    -0x8(%rbp),%rax
  mov    %edx,0x8(%rax)
L15:
  mov    -0x8(%rbp),%rax
  mov    (%rax),%rax
  cmp    $0x3b9ac9ff,%rax
  jg     L28
  nop
  nop
  pop    %rbp
  ret
```

assistant: ```c
void normalize_timespec(struct timespec *ts) {
  while (ts->tv_nsec < 0) {
    ts->tv_nsec += 1000L * 1000 * 1000;
    ts->tv_sec--;
  }
  while (ts->tv_nsec >= 1000L * 1000 * 1000) {
    ts->tv_nsec -= 1000L * 1000 * 1000;
    ts->tv_sec++;
  }
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<normalize_timespec>:
  endbr64
  mov    (%rdi),%rax
  test   %rax,%rax
  jns    L25
  mov    0x8(%rdi),%esi
  lea    -0x1(%rsi),%edx
L15:
  mov    %edx,%ecx
  sub    $0x1,%edx
  add    $0x3b9aca00,%rax
  js     L15
  mov    %rax,(%rdi)
  mov    %ecx,0x8(%rdi)
L25:
  mov    (%rdi),%rax
  cmp    $0x3b9ac9ff,%rax
  jle    L2
  mov    0x8(%rdi),%edx
L12:
  sub    $0x3b9aca00,%rax
  add    $0x1,%edx
  cmp    $0x3b9ac9ff,%rax
  jg     L12
  mov    %rax,(%rdi)
  mov    %edx,0x8(%rdi)
L2:
  ret
```

assistant: ```c
void normalize_timespec(struct timespec *ts) {
  while (ts->tv_nsec < 0) {
    ts->tv_nsec += 1000L * 1000 * 1000;
    ts->tv_sec--;
  }
  while (ts->tv_nsec >= 1000L * 1000 * 1000) {
    ts->tv_nsec -= 1000L * 1000 * 1000;
    ts->tv_sec++;
  }
}
```
user: 请将以下的汇编代码转换成C语言代码:

```asm
<normalize_timespec>:
  endbr64
  mov    (%rdi),%rax
  test   %rax,%rax
  jns    L3
  mov    0x8(%rdi),%esi
  lea    -0x1(%rsi),%edx
  nopw   0x0(%rax,%rax,1)
L41:
  mov    %edx,%ecx
  sub    $0x1,%edx
  add    $0x3b9aca00,%rax
  js     L41
  mov    %rax,(%rdi)
  mov    %ecx,0x8(%rdi)
L48:
  ret
  nopl   0x0(%rax)
L3:
  cmp    $0x3b9ac9ff,%rax
  jle    L48
  mov    0x8(%rdi),%esi
  lea    0x1(%rsi),%edx
  xchg   %ax,%ax
L8:
  sub    $0x3b9aca00,%rax
  mov    %edx,%ecx
  add    $0x1,%edx
  cmp    $0x3b9ac9ff,%rax
  jg     L8
  mov    %rax,(%rdi)
  mov    %ecx,0x8(%rdi)
  jmp    L48
```

assistant: ```c
void normalize_timespec(struct timespec *ts) {
  while (ts->tv_nsec < 0) {
    ts->tv_nsec += 1000L * 1000 * 1000;
    ts->tv_sec--;
  }
  while (ts->tv_nsec >= 1000L * 1000 * 1000) {
    ts->tv_nsec -= 1000L * 1000 * 1000;
    ts->tv_sec++;
  }
}
```
user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<process_online_users>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %edi,-0x24(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  mov    $0x0,%eax
  call   <setutxent@plt>
  jmp    L62
L31:
  mov    -0x18(%rbp),%rax
  mov    (%rax),%rdx
  mov    D1(%rip),%rax
  mov    (%rax),%rax
  cmp    %rax,%rdx
  je     L24
  jmp    L62
L24:
  lea    -0x1c(%rbp),%rdx
  mov    -0x18(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <parse_user@plt>
  mov    %rax,-0x10(%rbp)
  cmpq   $0x0,-0x10(%rbp)
  je     L64
  cmpl   $0x0,-0x24(%rbp)
  je     L70
  mov    -0x1c(%rbp),%edx
  mov    -0x10(%rbp),%rcx
  mov    -0x24(%rbp),%eax
  mov    %rcx,%rsi
  mov    %eax,%edi
  call   <flush@plt>
  jmp    L36
L70:
  mov    -0x10(%rbp),%rax
  mov    -0x30(%rbp),%rdx
  mov    %rax,%rdi
  call   *%rdx
L36:
  mov    -0x10(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
L62:
  mov    $0x0,%eax
  call   <getutxent@plt>
  mov    %rax,-0x18(%rbp)
  cmpq   $0x0,-0x18(%rbp)
  jne    L31
  mov    $0x0,%eax
  call   <endutxent@plt>
  jmp    L45
L64:
  nop
L45:
  mov    -0x8(%rbp),%rax
  sub    %fs:0x28,%rax
  je     L54
  call   <__stack_chk_fail@plt>
L54:
  leave
  ret
```

assistant: ```c
void process_online_users(int s, void *(f)(char *)) {
  setutxent();
  struct utmpx *uinfo;
  while ((uinfo = getutxent())) {
    if (uinfo->ut_type != USER_PROCESS)
      continue;
    int uline_len;
    char *uline = parse_user(uinfo, &uline_len);
    if (!uline) {
      return;
    }
    if (s) {
      flush(s, uline, uline_len);
    } else {
      f(uline);
    }
    free(uline);
  }
  endutxent();
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<process_online_users>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x18,%rsp
  mov    %edi,%ebp
  mov    %rsi,%r12
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  call   <setutxent@plt>
  lea    0x4(%rsp),%r13
  jmp    L69
L51:
  mov    0x4(%rsp),%edx
  mov    %rax,%rsi
  mov    %ebp,%edi
  call   <flush@plt>
L35:
  mov    %rbx,%rdi
  call   <free@plt>
L69:
  mov    $0x0,%eax
  call   <getutxent@plt>
  test   %rax,%rax
  je     L11
  mov    D6(%rip),%rdx
  mov    (%rdx),%rcx
  cmp    %rcx,(%rax)
  jne    L69
  mov    %r13,%rsi
  mov    %rax,%rdi
  call   <parse_user@plt>
  mov    %rax,%rbx
  test   %rax,%rax
  je     L2
  test   %ebp,%ebp
  jne    L51
  mov    %rax,%rdi
  call   *%r12
  jmp    L35
L11:
  call   <endutxent@plt>
L2:
  mov    0x8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L49
  add    $0x18,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L49:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
void process_online_users(int s, void *(f)(char *)) {
  setutxent();
  struct utmpx *uinfo;
  while ((uinfo = getutxent())) {
    if (uinfo->ut_type != USER_PROCESS)
      continue;
    int uline_len;
    char *uline = parse_user(uinfo, &uline_len);
    if (!uline) {
      return;
    }
    if (s) {
      flush(s, uline, uline_len);
    } else {
      f(uline);
    }
    free(uline);
  }
  endutxent();
}
```
user: What would the C source look like for the assembly code provided here:

```asm
<process_online_users>:
  endbr64
  push   %r13
  push   %r12
  mov    %rsi,%r12
  push   %rbp
  push   %rbx
  mov    %edi,%ebx
  sub    $0x18,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  lea    0x4(%rsp),%r13
  call   <setutxent@plt>
  nopl   (%rax)
L23:
  xor    %eax,%eax
  call   <getutxent@plt>
  test   %rax,%rax
  je     L69
L49:
  mov    D1(%rip),%rdx
  mov    (%rdx),%rcx
  cmp    %rcx,(%rax)
  jne    L23
  mov    %r13,%rsi
  mov    %rax,%rdi
  call   <parse_user@plt>
  mov    %rax,%rbp
  test   %rax,%rax
  je     L60
  test   %ebx,%ebx
  jne    L52
  mov    %rax,%rdi
  call   *%r12
L55:
  mov    %rbp,%rdi
  call   <free@plt>
  xor    %eax,%eax
  call   <getutxent@plt>
  test   %rax,%rax
  jne    L49
L69:
  mov    0x8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L66
  add    $0x18,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  jmp    10d0 <endutxent@plt>
  nopl   (%rax)
L52:
  mov    0x4(%rsp),%edx
  mov    %rax,%rsi
  mov    %ebx,%edi
  call   <flush@plt>
  jmp    L55
L60:
  mov    0x8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L66
  add    $0x18,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L66:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
void process_online_users(int s, void *(f)(char *)) {
  setutxent();
  struct utmpx *uinfo;
  while ((uinfo = getutxent())) {
    if (uinfo->ut_type != USER_PROCESS)
      continue;
    int uline_len;
    char *uline = parse_user(uinfo, &uline_len);
    if (!uline) {
      return;
    }
    if (s) {
      flush(s, uline, uline_len);
    } else {
      f(uline);
    }
    free(uline);
  }
  endutxent();
}
```