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

```asm
<mp_copy>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %edi,-0x14(%rbp)
  mov    %esi,-0x18(%rbp)
  mov    %rdx,-0x20(%rbp)
  mov    %rcx,-0x28(%rbp)
  movl   $0x0,-0x4(%rbp)
  jmp    L4
L9:
  mov    -0x4(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x20(%rbp),%rax
  add    %rdx,%rax
  mov    -0x4(%rbp),%edx
  movslq %edx,%rdx
  lea    0x0(,%rdx,4),%rcx
  mov    -0x28(%rbp),%rdx
  add    %rcx,%rdx
  mov    (%rax),%eax
  mov    %eax,(%rdx)
  addl   $0x1,-0x4(%rbp)
L4:
  mov    -0x14(%rbp),%eax
  add    $0x1,%eax
  cmp    %eax,-0x4(%rbp)
  jle    L9
  nop
  nop
  pop    %rbp
  ret
```

assistant: ```c
void mp_copy(int n, int radix, int in[], int out[]) {
  int j;
  for (j = 0; j <= n + 1; j++) {
    out[j] = in[j];
  }
}
```
user: 这段汇编代码用C语言表示是什么样的：

```asm
<mp_copy>:
  endbr64
  cmp    $0xffffffff,%edi
  jl     L15
  lea    0x1(%rdi),%edi
  mov    $0x0,%eax
L8:
  mov    (%rdx,%rax,4),%esi
  mov    %esi,(%rcx,%rax,4)
  mov    %rax,%rsi
  add    $0x1,%rax
  cmp    %rdi,%rsi
  jne    L8
L15:
  ret
```

assistant: ```c
void mp_copy(int n, int radix, int in[], int out[]) {
  int j;
  for (j = 0; j <= n + 1; j++) {
    out[j] = in[j];
  }
}
```
user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<mp_copy>:
  endbr64
  cmp    $0xffffffff,%edi
  jl     L8
  add    $0x1,%edi
  xor    %eax,%eax
  xchg   %ax,%ax
L7:
  mov    (%rdx,%rax,4),%esi
  mov    %esi,(%rcx,%rax,4)
  mov    %rax,%rsi
  add    $0x1,%rax
  cmp    %rsi,%rdi
  jne    L7
L8:
  ret
```

assistant: ```c
void mp_copy(int n, int radix, int in[], int out[]) {
  int j;
  for (j = 0; j <= n + 1; j++) {
    out[j] = in[j];
  }
}
```
user: 这段汇编代码用C语言表示是什么样的？

```asm
<mp_copy>:
  endbr64
  mov    %edi,%eax
  mov    %edi,%r8d
  add    $0x1,%eax
  js     L68
  lea    0x4(%rdx),%rdi
  mov    %rcx,%rsi
  sub    %rdi,%rsi
  cmp    $0x8,%rsi
  jbe    L64
  cmp    $0x2,%eax
  jbe    L64
  lea    0x2(%r8),%edi
  xor    %eax,%eax
  mov    %edi,%esi
  shr    $0x2,%esi
  shl    $0x4,%rsi
  cs nopw 0x0(%rax,%rax,1)
L61:
  movdqu (%rdx,%rax,1),%xmm0
  movups %xmm0,(%rcx,%rax,1)
  add    $0x10,%rax
  cmp    %rsi,%rax
  jne    L61
  mov    %edi,%r9d
  and    $0xfffffffc,%r9d
  and    $0x3,%edi
  je     L68
  movslq %r9d,%rsi
  mov    (%rdx,%rsi,4),%edi
  lea    0x0(,%rsi,4),%rax
  mov    %edi,(%rcx,%rsi,4)
  cmp    %r9d,%r8d
  jl     L68
  mov    0x4(%rdx,%rax,1),%esi
  mov    %esi,0x4(%rcx,%rax,1)
  jle    L68
  mov    0x8(%rdx,%rax,1),%edx
  mov    %edx,0x8(%rcx,%rax,1)
  ret
  nopw   0x0(%rax,%rax,1)
L64:
  mov    %eax,%esi
  xor    %eax,%eax
  nopl   0x0(%rax)
L19:
  mov    (%rdx,%rax,4),%edi
  mov    %edi,(%rcx,%rax,4)
  mov    %rax,%rdi
  add    $0x1,%rax
  cmp    %rsi,%rdi
  jne    L19
L68:
  ret
```

assistant: ```c
void mp_copy(int n, int radix, int in[], int out[]) {
  int j;
  for (j = 0; j <= n + 1; j++) {
    out[j] = in[j];
  }
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<makeMatriz>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x18(%rbp)
  movl   $0x0,-0x8(%rbp)
  jmp    L36
L27:
  movl   $0x0,-0x4(%rbp)
  jmp    L26
L38:
  mov    $0x0,%eax
  call   <randNormalize@plt>
  mov    %eax,%edx
  mov    -0x8(%rbp),%eax
  movslq %eax,%rcx
  mov    %rcx,%rax
  shl    $0x2,%rax
  add    %rcx,%rax
  shl    $0x4,%rax
  mov    %rax,%rcx
  mov    -0x18(%rbp),%rax
  add    %rax,%rcx
  mov    %edx,%eax
  shl    $0x2,%eax
  add    %edx,%eax
  shl    $0x2,%eax
  mov    %eax,%edx
  mov    -0x4(%rbp),%eax
  cltq
  mov    %edx,(%rcx,%rax,4)
  addl   $0x1,-0x4(%rbp)
L26:
  cmpl   $0x13,-0x4(%rbp)
  jle    L38
  addl   $0x1,-0x8(%rbp)
L36:
  cmpl   $0x4,-0x8(%rbp)
  jle    L27
  nop
  nop
  leave
  ret
```

assistant: ```c
void makeMatriz(int matriz[5][20]) {
  int i, j;
  for (i = 0; i < 5; i++) {
    for (j = 0; j < 20; j++) {
      matriz[i][j] = (int)(randNormalize() * (20));
    }
  }
}
```
user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<makeMatriz>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  lea    0x50(%rdi),%rbp
  lea    0x1e0(%rdi),%r12
L10:
  lea    -0x50(%rbp),%rbx
L16:
  mov    $0x0,%eax
  call   <randNormalize@plt>
  lea    (%rax,%rax,4),%eax
  shl    $0x2,%eax
  mov    %eax,(%rbx)
  add    $0x4,%rbx
  cmp    %rbp,%rbx
  jne    L16
  add    $0x50,%rbp
  cmp    %r12,%rbp
  jne    L10
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
```

assistant: ```c
void makeMatriz(int matriz[5][20]) {
  int i, j;
  for (i = 0; i < 5; i++) {
    for (j = 0; j < 20; j++) {
      matriz[i][j] = (int)(randNormalize() * (20));
    }
  }
}
```
user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<makeMatriz>:
  endbr64
  push   %r12
  lea    0x1e0(%rdi),%r12
  push   %rbp
  lea    0x50(%rdi),%rbp
  push   %rbx
L5:
  lea    -0x50(%rbp),%rbx
  nopw   0x0(%rax,%rax,1)
L17:
  xor    %eax,%eax
  add    $0x4,%rbx
  call   <randNormalize@plt>
  lea    (%rax,%rax,4),%eax
  shl    $0x2,%eax
  mov    %eax,-0x4(%rbx)
  cmp    %rbp,%rbx
  jne    L17
  lea    0x50(%rbx),%rbp
  cmp    %r12,%rbp
  jne    L5
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
```

assistant: ```c
void makeMatriz(int matriz[5][20]) {
  int i, j;
  for (i = 0; i < 5; i++) {
    for (j = 0; j < 20; j++) {
      matriz[i][j] = (int)(randNormalize() * (20));
    }
  }
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<makeMatriz>:
  endbr64
  push   %r12
  lea    0x1e0(%rdi),%r12
  push   %rbp
  lea    0x50(%rdi),%rbp
  push   %rbx
L0:
  lea    -0x50(%rbp),%rbx
  nopw   0x0(%rax,%rax,1)
L3:
  xor    %eax,%eax
  add    $0x4,%rbx
  call   <randNormalize@plt>
  lea    (%rax,%rax,4),%eax
  shl    $0x2,%eax
  mov    %eax,-0x4(%rbx)
  cmp    %rbp,%rbx
  jne    L3
  lea    0x50(%rbx),%rbp
  cmp    %r12,%rbp
  jne    L0
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
```

assistant: ```c
void makeMatriz(int matriz[5][20]) {
  int i, j;
  for (i = 0; i < 5; i++) {
    for (j = 0; j < 20; j++) {
      matriz[i][j] = (int)(randNormalize() * (20));
    }
  }
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<rdtsc>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  rdtsc
  mov    %rax,-0x8(%rbp)
  mov    -0x8(%rbp),%rax
  pop    %rbp
  ret
```

assistant: ```c
uint64_t rdtsc(void) {
  uint64_t res;
  asm volatile("rdtsc" : "=A"(res));
  return res;
}
```
user: Translate the below assembly code into C programming language:

```asm
<rdtsc>:
  endbr64
  rdtsc
  ret
```

assistant: ```c
uint64_t rdtsc(void) {
  uint64_t res;
  asm volatile("rdtsc" : "=A"(res));
  return res;
}
```
user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<rdtsc>:
  endbr64
  rdtsc
  ret
```

assistant: ```c
uint64_t rdtsc(void) {
  uint64_t res;
  asm volatile("rdtsc" : "=A"(res));
  return res;
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<rdtsc>:
  endbr64
  rdtsc
  ret
```

assistant: ```c
uint64_t rdtsc(void) {
  uint64_t res;
  asm volatile("rdtsc" : "=A"(res));
  return res;
}
```
user: 请将这段汇编代码片段转换成等效的C代码:

```asm
<_AutoSrand>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r12
  push   %rbx
  sub    $0x20,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x18(%rbp)
  xor    %eax,%eax
  lea    -0x30(%rbp),%rax
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <gettimeofday@plt>
  mov    $0x0,%eax
  call   <_Rand@plt>
  mov    %eax,%edx
  mov    -0x28(%rbp),%rax
  xor    %eax,%edx
  mov    %edx,%ebx
  mov    -0x30(%rbp),%rax
  mov    %eax,%r12d
  mov    $0x0,%eax
  call   <getpid@plt>
  add    %r12d,%eax
  xor    %ebx,%eax
  mov    %eax,%edi
  call   <_Srand@plt>
  nop
  mov    -0x18(%rbp),%rax
  sub    %fs:0x28,%rax
  je     L5
  call   <__stack_chk_fail@plt>
L5:
  add    $0x20,%rsp
  pop    %rbx
  pop    %r12
  pop    %rbp
  ret
```

assistant: ```c
void _AutoSrand() {
  struct timeval tv;
  gettimeofday(&tv, NULL);
  _Srand(_Rand() ^ (unsigned int)(tv.tv_sec) ^ ((unsigned int)(tv.tv_usec) + (unsigned int)(getpid())));
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<_AutoSrand>:
  endbr64
  push   %rbp
  push   %rbx
  sub    $0x28,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  mov    %rsp,%rdi
  mov    $0x0,%esi
  call   <gettimeofday@plt>
  mov    $0x0,%eax
  call   <_Rand@plt>
  xor    0x8(%rsp),%eax
  mov    %eax,%ebp
  mov    (%rsp),%rbx
  mov    $0x0,%eax
  call   <getpid@plt>
  lea    (%rbx,%rax,1),%edi
  xor    %ebp,%edi
  call   <_Srand@plt>
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L4
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  ret
L4:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
void _AutoSrand() {
  struct timeval tv;
  gettimeofday(&tv, NULL);
  _Srand(_Rand() ^ (unsigned int)(tv.tv_sec) ^ ((unsigned int)(tv.tv_usec) + (unsigned int)(getpid())));
}
```
user: 请从给定的汇编指令推导出C源代码:

```asm
<_AutoSrand>:
  endbr64
  push   %rbp
  xor    %esi,%esi
  push   %rbx
  sub    $0x28,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  mov    %rsp,%rdi
  call   <gettimeofday@plt>
  xor    %eax,%eax
  call   <_Rand@plt>
  xor    0x8(%rsp),%eax
  mov    (%rsp),%rbx
  mov    %eax,%ebp
  xor    %eax,%eax
  call   <getpid@plt>
  lea    (%rbx,%rax,1),%edi
  xor    %ebp,%edi
  call   <_Srand@plt>
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L3
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  ret
L3:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
void _AutoSrand() {
  struct timeval tv;
  gettimeofday(&tv, NULL);
  _Srand(_Rand() ^ (unsigned int)(tv.tv_sec) ^ ((unsigned int)(tv.tv_usec) + (unsigned int)(getpid())));
}
```
user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<_AutoSrand>:
  endbr64
  push   %rbp
  xor    %esi,%esi
  push   %rbx
  sub    $0x28,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  mov    %rsp,%rdi
  call   <gettimeofday@plt>
  xor    %eax,%eax
  call   <_Rand@plt>
  xor    0x8(%rsp),%eax
  mov    (%rsp),%rbx
  mov    %eax,%ebp
  xor    %eax,%eax
  call   <getpid@plt>
  lea    (%rbx,%rax,1),%edi
  xor    %ebp,%edi
  call   <_Srand@plt>
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L5
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  ret
L5:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
void _AutoSrand() {
  struct timeval tv;
  gettimeofday(&tv, NULL);
  _Srand(_Rand() ^ (unsigned int)(tv.tv_sec) ^ ((unsigned int)(tv.tv_usec) + (unsigned int)(getpid())));
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<xyz_sock_read_to>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %edi,-0x24(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    %edx,-0x28(%rbp)
  mov    %ecx,-0x34(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  lea    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <FD_ZERO@plt>
  lea    -0x18(%rbp),%rdx
  mov    -0x24(%rbp),%eax
  mov    %rdx,%rsi
  mov    %eax,%edi
  call   <FD_SET@plt>
  mov    -0x34(%rbp),%eax
  movslq %eax,%rdx
  imul   $0x431bde83,%rdx,%rdx
  shr    $0x20,%rdx
  sar    $0x12,%edx
  sar    $0x1f,%eax
  mov    %eax,%ecx
  mov    %edx,%eax
  sub    %ecx,%eax
  mov    %eax,-0x10(%rbp)
  mov    -0x34(%rbp),%edx
  movslq %edx,%rax
  imul   $0x431bde83,%rax,%rax
  shr    $0x20,%rax
  sar    $0x12,%eax
  mov    %edx,%ecx
  sar    $0x1f,%ecx
  sub    %ecx,%eax
  imul   $0xf4240,%eax,%ecx
  mov    %edx,%eax
  sub    %ecx,%eax
  mov    %eax,-0xc(%rbp)
  cmpl   $0x3ff,-0x24(%rbp)
  jle    L30
  mov    -0x28(%rbp),%edx
  mov    -0x30(%rbp),%rcx
  mov    -0x24(%rbp),%eax
  mov    %rcx,%rsi
  mov    %eax,%edi
  call   <read@plt>
  jmp    L67
L30:
  mov    -0x24(%rbp),%eax
  lea    0x1(%rax),%edi
  lea    -0x10(%rbp),%rdx
  lea    -0x18(%rbp),%rax
  mov    %rdx,%r8
  mov    $0x0,%ecx
  mov    $0x0,%edx
  mov    %rax,%rsi
  call   <select@plt>
  mov    %eax,-0x14(%rbp)
  cmpl   $0x0,-0x14(%rbp)
  jne    L4
  mov    $0x0,%eax
  jmp    L67
L4:
  cmpl   $0x1,-0x14(%rbp)
  jne    L76
  mov    -0x28(%rbp),%edx
  mov    -0x30(%rbp),%rcx
  mov    -0x24(%rbp),%eax
  mov    %rcx,%rsi
  mov    %eax,%edi
  call   <read@plt>
  jmp    L67
L76:
  cmpl   $0xffffffff,-0x14(%rbp)
  jne    L78
  mov    D18(%rip),%rax
  mov    (%rax),%rdx
  mov    D2(%rip),%rax
  mov    (%rax),%rax
  cmp    %rax,%rdx
  jne    L59
  mov    $0x0,%eax
  jmp    L67
L59:
  mov    $0xffffffff,%eax
  jmp    L67
L78:
  mov    $0x0,%eax
L67:
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L2
  call   <__stack_chk_fail@plt>
L2:
  leave
  ret
```

assistant: ```c
int xyz_sock_read_to(int sockfd, char *data, int len, int usec) {
  fd_set rdset;
  FD_ZERO(&rdset);
  FD_SET(sockfd, &rdset);
  struct timeval tv;
  tv.tv_sec = usec / 1000000;
  tv.tv_usec = usec % 1000000;
  if (sockfd >= 1024) {
    return read(sockfd, data, len);
  }
  int n = select(sockfd + 1, &rdset, NULL, NULL, &tv);
  if (n == 0) {
    return 0;
  }
  if (n == 1) {
    return read(sockfd, data, len);
  }
  if (n == -1) {
    if (errno == EINTR) {
      return 0;
    } else {
      return -1;
    }
  }
  return 0;
}
```
user: 这段汇编代码用C语言表示是什么样的?

```asm
<xyz_sock_read_to>:
  endbr64
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x20,%rsp
  mov    %edi,%ebp
  mov    %rsi,%r12
  mov    %edx,%r13d
  mov    %ecx,%ebx
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  lea    0xc(%rsp),%r14
  mov    %r14,%rdi
  call   <FD_ZERO@plt>
  mov    %r14,%rsi
  mov    %ebp,%edi
  call   <FD_SET@plt>
  movslq %ebx,%rax
  imul   $0x431bde83,%rax,%rax
  sar    $0x32,%rax
  mov    %ebx,%edx
  sar    $0x1f,%edx
  sub    %edx,%eax
  mov    %eax,0x10(%rsp)
  imul   $0xf4240,%eax,%eax
  sub    %eax,%ebx
  mov    %ebx,0x14(%rsp)
  cmp    $0x3ff,%ebp
  jg     L7
  lea    0xc(%rsp),%rsi
  lea    0x1(%rbp),%edi
  lea    0x10(%rsp),%r8
  mov    $0x0,%ecx
  mov    $0x0,%edx
  call   <select@plt>
  test   %eax,%eax
  je     L57
  cmp    $0x1,%eax
  je     L68
  cmp    $0xffffffff,%eax
  je     L6
  mov    $0x0,%eax
  jmp    L57
L7:
  mov    %r13d,%edx
  mov    %r12,%rsi
  mov    %ebp,%edi
  call   <read@plt>
L57:
  mov    0x18(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L24
  add    $0x20,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
L68:
  mov    %r13d,%edx
  mov    %r12,%rsi
  mov    %ebp,%edi
  call   <read@plt>
  jmp    L57
L6:
  mov    D19(%rip),%rdx
  mov    D3(%rip),%rax
  mov    (%rax),%rax
  cmp    %rax,(%rdx)
  setne  %al
  movzbl %al,%eax
  neg    %eax
  jmp    L57
L24:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int xyz_sock_read_to(int sockfd, char *data, int len, int usec) {
  fd_set rdset;
  FD_ZERO(&rdset);
  FD_SET(sockfd, &rdset);
  struct timeval tv;
  tv.tv_sec = usec / 1000000;
  tv.tv_usec = usec % 1000000;
  if (sockfd >= 1024) {
    return read(sockfd, data, len);
  }
  int n = select(sockfd + 1, &rdset, NULL, NULL, &tv);
  if (n == 0) {
    return 0;
  }
  if (n == 1) {
    return read(sockfd, data, len);
  }
  if (n == -1) {
    if (errno == EINTR) {
      return 0;
    } else {
      return -1;
    }
  }
  return 0;
}
```
user: Translate the below assembly code into C programming language:

```asm
<xyz_sock_read_to>:
  endbr64
  push   %r14
  push   %r13
  mov    %edx,%r13d
  push   %r12
  mov    %rsi,%r12
  push   %rbp
  mov    %edi,%ebp
  push   %rbx
  mov    %ecx,%ebx
  sub    $0x20,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  lea    0xc(%rsp),%r14
  mov    %r14,%rdi
  call   <FD_ZERO@plt>
  mov    %r14,%rsi
  mov    %ebp,%edi
  call   <FD_SET@plt>
  movslq %ebx,%rax
  mov    %ebx,%edx
  imul   $0x431bde83,%rax,%rax
  sar    $0x1f,%edx
  sar    $0x32,%rax
  sub    %edx,%eax
  mov    %eax,0x10(%rsp)
  imul   $0xf4240,%eax,%eax
  sub    %eax,%ebx
  mov    %ebx,0x14(%rsp)
  cmp    $0x3ff,%ebp
  jg     L24
  xor    %ecx,%ecx
  xor    %edx,%edx
  lea    0x1(%rbp),%edi
  mov    %r14,%rsi
  lea    0x10(%rsp),%r8
  call   <select@plt>
  test   %eax,%eax
  je     L45
  cmp    $0x1,%eax
  je     L24
  cmp    $0xffffffff,%eax
  je     L60
  xor    %eax,%eax
L45:
  mov    0x18(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L57
  add    $0x20,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
  nop
L24:
  mov    %r13d,%edx
  mov    %r12,%rsi
  mov    %ebp,%edi
  call   <read@plt>
  jmp    L45
  nop
L60:
  mov    D9(%rip),%rdx
  mov    D16(%rip),%rax
  mov    (%rax),%rax
  cmp    %rax,(%rdx)
  setne  %al
  movzbl %al,%eax
  neg    %eax
  jmp    L45
L57:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int xyz_sock_read_to(int sockfd, char *data, int len, int usec) {
  fd_set rdset;
  FD_ZERO(&rdset);
  FD_SET(sockfd, &rdset);
  struct timeval tv;
  tv.tv_sec = usec / 1000000;
  tv.tv_usec = usec % 1000000;
  if (sockfd >= 1024) {
    return read(sockfd, data, len);
  }
  int n = select(sockfd + 1, &rdset, NULL, NULL, &tv);
  if (n == 0) {
    return 0;
  }
  if (n == 1) {
    return read(sockfd, data, len);
  }
  if (n == -1) {
    if (errno == EINTR) {
      return 0;
    } else {
      return -1;
    }
  }
  return 0;
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<xyz_sock_read_to>:
  endbr64
  push   %r14
  push   %r13
  mov    %edx,%r13d
  push   %r12
  mov    %rsi,%r12
  push   %rbp
  mov    %edi,%ebp
  push   %rbx
  mov    %ecx,%ebx
  sub    $0x20,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  lea    0xc(%rsp),%r14
  mov    %r14,%rdi
  call   <FD_ZERO@plt>
  mov    %r14,%rsi
  mov    %ebp,%edi
  call   <FD_SET@plt>
  movslq %ebx,%rax
  mov    %ebx,%edx
  imul   $0x431bde83,%rax,%rax
  sar    $0x1f,%edx
  sar    $0x32,%rax
  sub    %edx,%eax
  imul   $0xf4240,%eax,%edx
  movd   %eax,%xmm0
  sub    %edx,%ebx
  movd   %ebx,%xmm1
  punpckldq %xmm1,%xmm0
  movq   %xmm0,0x10(%rsp)
  cmp    $0x3ff,%ebp
  jg     L19
  xor    %ecx,%ecx
  xor    %edx,%edx
  lea    0x1(%rbp),%edi
  mov    %r14,%rsi
  lea    0x10(%rsp),%r8
  call   <select@plt>
  test   %eax,%eax
  je     L23
  cmp    $0x1,%eax
  je     L19
  cmp    $0xffffffff,%eax
  je     L6
  xor    %eax,%eax
L23:
  mov    0x18(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L63
  add    $0x20,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
  nopl   0x0(%rax)
L19:
  mov    %r13d,%edx
  mov    %r12,%rsi
  mov    %ebp,%edi
  call   <read@plt>
  jmp    L23
  nop
L6:
  mov    D6(%rip),%rdx
  mov    D19(%rip),%rax
  mov    (%rax),%rax
  cmp    %rax,(%rdx)
  setne  %al
  movzbl %al,%eax
  neg    %eax
  jmp    L23
L63:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int xyz_sock_read_to(int sockfd, char *data, int len, int usec) {
  fd_set rdset;
  FD_ZERO(&rdset);
  FD_SET(sockfd, &rdset);
  struct timeval tv;
  tv.tv_sec = usec / 1000000;
  tv.tv_usec = usec % 1000000;
  if (sockfd >= 1024) {
    return read(sockfd, data, len);
  }
  int n = select(sockfd + 1, &rdset, NULL, NULL, &tv);
  if (n == 0) {
    return 0;
  }
  if (n == 1) {
    return read(sockfd, data, len);
  }
  if (n == -1) {
    if (errno == EINTR) {
      return 0;
    } else {
      return -1;
    }
  }
  return 0;
}
```
user: 下面的汇编指令对应的C源代码是什么：

```asm
<quote_for_csv>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %rdi,-0x28(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,-0x8(%rbp)
  movl   $0x0,-0x14(%rbp)
  mov    -0x30(%rbp),%rax
  mov    %rax,-0x10(%rbp)
  jmp    L86
L4:
  mov    -0x10(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x2c,%al
  je     L77
  mov    -0x10(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x22,%al
  jne    L67
L77:
  movl   $0x1,-0x14(%rbp)
  jmp    L80
L67:
  addq   $0x1,-0x10(%rbp)
L86:
  mov    -0x10(%rbp),%rax
  movzbl (%rax),%eax
  test   %al,%al
  jne    L4
L80:
  cmpl   $0x0,-0x14(%rbp)
  je     L13
  mov    -0x8(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    %rdx,-0x8(%rbp)
  movb   $0x22,(%rax)
  mov    -0x30(%rbp),%rax
  mov    %rax,-0x10(%rbp)
  jmp    L49
L2:
  mov    -0x10(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x22,%al
  jne    L72
  mov    -0x8(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    %rdx,-0x8(%rbp)
  mov    -0x10(%rbp),%rdx
  movzbl (%rdx),%edx
  mov    %dl,(%rax)
L72:
  mov    -0x8(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    %rdx,-0x8(%rbp)
  mov    -0x10(%rbp),%rdx
  movzbl (%rdx),%edx
  mov    %dl,(%rax)
  addq   $0x1,-0x10(%rbp)
L49:
  mov    -0x10(%rbp),%rax
  movzbl (%rax),%eax
  test   %al,%al
  jne    L2
  mov    -0x8(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    %rdx,-0x8(%rbp)
  movb   $0x22,(%rax)
  mov    -0x8(%rbp),%rax
  movb   $0x0,(%rax)
  jmp    L88
L13:
  mov    -0x30(%rbp),%rdx
  mov    -0x28(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcpy@plt>
L88:
  nop
  leave
  ret
```

assistant: ```c
void quote_for_csv(char *out, const char *in) {
  const char *p;
  char *q = out;
  int need_quote = 0;
  for (p = in; *p != '\0'; p++) {
    if (*p == ',' || *p == '"') {
      need_quote = 1;
      break;
    }
  }
  if (need_quote) {
    *q++ = '"';
    for (p = in; *p != '\0'; p++) {
      if (*p == '"') {
        *q++ = *p;
      }
      *q++ = *p;
    }
    *q++ = '"';
    *q = '\0';
  } else {
    strcpy(out, in);
  }
}
```
user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<quote_for_csv>:
  endbr64
  movzbl (%rsi),%eax
  test   %al,%al
  je     L20
  mov    %rsi,%rdx
L17:
  cmp    $0x2c,%al
  je     L3
  cmp    $0x22,%al
  je     L3
  add    $0x1,%rdx
  movzbl (%rdx),%eax
  test   %al,%al
  jne    L17
L20:
  sub    $0x8,%rsp
  call   <strcpy@plt>
  add    $0x8,%rsp
  ret
L19:
  lea    0x1(%rax),%rcx
  movzbl (%rsi),%edx
  mov    %dl,(%rax)
  add    $0x1,%rsi
  movzbl (%rsi),%edx
  test   %dl,%dl
  je     L1
L31:
  mov    %rcx,%rax
  cmp    $0x22,%dl
  jne    L19
  lea    0x1(%rcx),%rax
  movb   $0x22,(%rcx)
  jmp    L19
L3:
  lea    0x1(%rdi),%rcx
  movb   $0x22,(%rdi)
  movzbl (%rsi),%edx
  test   %dl,%dl
  jne    L31
L1:
  movb   $0x22,(%rcx)
  movb   $0x0,0x1(%rcx)
  ret
```

assistant: ```c
void quote_for_csv(char *out, const char *in) {
  const char *p;
  char *q = out;
  int need_quote = 0;
  for (p = in; *p != '\0'; p++) {
    if (*p == ',' || *p == '"') {
      need_quote = 1;
      break;
    }
  }
  if (need_quote) {
    *q++ = '"';
    for (p = in; *p != '\0'; p++) {
      if (*p == '"') {
        *q++ = *p;
      }
      *q++ = *p;
    }
    *q++ = '"';
    *q = '\0';
  } else {
    strcpy(out, in);
  }
}
```
user: 请将以下的汇编代码转换成C语言代码：

```asm
<quote_for_csv>:
  endbr64
  movzbl (%rsi),%eax
  test   %al,%al
  je     L63
  mov    %rsi,%rdx
  xchg   %ax,%ax
L2:
  cmp    $0x2c,%al
  je     L34
  cmp    $0x22,%al
  je     L34
  movzbl 0x1(%rdx),%eax
  add    $0x1,%rdx
  test   %al,%al
  jne    L2
L63:
  jmp    1050 <strcpy@plt>
  nopl   0x0(%rax)
L34:
  movb   $0x22,(%rdi)
  movzbl (%rsi),%edx
  lea    0x1(%rdi),%rcx
  test   %dl,%dl
  je     L8
  xchg   %ax,%ax
L22:
  mov    %rcx,%rax
  cmp    $0x22,%dl
  jne    L23
  movb   $0x22,(%rcx)
  add    $0x1,%rax
L23:
  movzbl (%rsi),%edx
  add    $0x1,%rsi
  lea    0x1(%rax),%rcx
  mov    %dl,(%rax)
  movzbl (%rsi),%edx
  test   %dl,%dl
  jne    L22
L8:
  mov    $0x22,%eax
  mov    %ax,(%rcx)
  ret
```

assistant: ```c
void quote_for_csv(char *out, const char *in) {
  const char *p;
  char *q = out;
  int need_quote = 0;
  for (p = in; *p != '\0'; p++) {
    if (*p == ',' || *p == '"') {
      need_quote = 1;
      break;
    }
  }
  if (need_quote) {
    *q++ = '"';
    for (p = in; *p != '\0'; p++) {
      if (*p == '"') {
        *q++ = *p;
      }
      *q++ = *p;
    }
    *q++ = '"';
    *q = '\0';
  } else {
    strcpy(out, in);
  }
}
```