ylfeng/ReF-Decompile-dataset huggingface dataset:
user: 请将以下的汇编代码转换成C语言代码:

```asm
<set_socket_timeout>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %edi,-0x24(%rbp)
  mov    %esi,-0x28(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  cmpl   $0x0,-0x28(%rbp)
  js     L4
  mov    -0x28(%rbp),%eax
  mov    $0x0,%edx
  test   %eax,%eax
  cmovs  %edx,%eax
  mov    %eax,-0x20(%rbp)
  movq   $0x0,-0x18(%rbp)
  mov    D8(%rip),%rax
  mov    (%rax),%edx
  mov    D5(%rip),%rax
  mov    (%rax),%esi
  lea    -0x20(%rbp),%rcx
  mov    -0x24(%rbp),%eax
  mov    $0x10,%r8d
  mov    %eax,%edi
  call   <setsockopt@plt>
  jmp    L10
L4:
  nop
L10:
  mov    -0x8(%rbp),%rax
  sub    %fs:0x28,%rax
  je     L16
  call   <__stack_chk_fail@plt>
L16:
  leave
  ret
```

assistant: ```c
void set_socket_timeout(int socketfd, int timeout) {
  if (timeout < 0)
    return;
  struct timeval tv;
  tv.tv_sec = timeout > 0 ? timeout : 0;
  tv.tv_usec = 0;
  setsockopt(socketfd, SOL_SOCKET, SO_RCVTIMEO, (char *)&tv, sizeof(struct timeval));
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<set_socket_timeout>:
  endbr64
  sub    $0x28,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  test   %esi,%esi
  js     L7
  cmovs  %eax,%esi
  mov    %esi,(%rsp)
  movq   $0x0,0x8(%rsp)
  mov    %rsp,%rcx
  mov    $0x10,%r8d
  mov    D14(%rip),%rax
  mov    (%rax),%edx
  mov    D12(%rip),%rax
  mov    (%rax),%esi
  call   <setsockopt@plt>
L7:
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L6
  add    $0x28,%rsp
  ret
L6:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
void set_socket_timeout(int socketfd, int timeout) {
  if (timeout < 0)
    return;
  struct timeval tv;
  tv.tv_sec = timeout > 0 ? timeout : 0;
  tv.tv_usec = 0;
  setsockopt(socketfd, SOL_SOCKET, SO_RCVTIMEO, (char *)&tv, sizeof(struct timeval));
}
```
user: 请从给定的汇编指令推导出C源代码:

```asm
<set_socket_timeout>:
  endbr64
  sub    $0x28,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  test   %esi,%esi
  js     L2
  mov    D10(%rip),%rax
  mov    %esi,(%rsp)
  mov    %rsp,%rcx
  mov    $0x10,%r8d
  movq   $0x0,0x8(%rsp)
  mov    (%rax),%edx
  mov    D16(%rip),%rax
  mov    (%rax),%esi
  call   <setsockopt@plt>
L2:
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L1
  add    $0x28,%rsp
  ret
L1:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
void set_socket_timeout(int socketfd, int timeout) {
  if (timeout < 0)
    return;
  struct timeval tv;
  tv.tv_sec = timeout > 0 ? timeout : 0;
  tv.tv_usec = 0;
  setsockopt(socketfd, SOL_SOCKET, SO_RCVTIMEO, (char *)&tv, sizeof(struct timeval));
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<set_socket_timeout>:
  endbr64
  sub    $0x28,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  test   %esi,%esi
  js     L18
  mov    D13(%rip),%rax
  mov    %esi,(%rsp)
  mov    %rsp,%rcx
  mov    $0x10,%r8d
  movq   $0x0,0x8(%rsp)
  mov    (%rax),%edx
  mov    D9(%rip),%rax
  mov    (%rax),%esi
  call   <setsockopt@plt>
L18:
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L4
  add    $0x28,%rsp
  ret
L4:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
void set_socket_timeout(int socketfd, int timeout) {
  if (timeout < 0)
    return;
  struct timeval tv;
  tv.tv_sec = timeout > 0 ? timeout : 0;
  tv.tv_usec = 0;
  setsockopt(socketfd, SOL_SOCKET, SO_RCVTIMEO, (char *)&tv, sizeof(struct timeval));
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<calloc>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x18(%rbp)
  mov    %rsi,-0x20(%rbp)
  mov    -0x18(%rbp),%rax
  imul   -0x20(%rbp),%rax
  mov    %rax,%rdi
  call   <malloc@plt>
  mov    %rax,-0x8(%rbp)
  cmpq   $0x0,-0x8(%rbp)
  je     L6
  mov    -0x18(%rbp),%rax
  imul   -0x20(%rbp),%rax
  mov    %rax,%rdx
  mov    -0x8(%rbp),%rax
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <memset@plt>
L6:
  mov    -0x8(%rbp),%rax
  leave
  ret
```

assistant: ```c
void *calloc(size_t size, size_t nelem) {
  void *rv = malloc(size * nelem);
  if (rv)
    memset(rv, 0, size * nelem);
  return rv;
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<calloc>:
  endbr64
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  imul   %rsi,%rdi
  mov    %rdi,%rbp
  call   <malloc@plt>
  mov    %rax,%rbx
  test   %rax,%rax
  je     L5
  mov    %rbp,%rdx
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <memset@plt>
L5:
  mov    %rbx,%rax
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  ret
```

assistant: ```c
void *calloc(size_t size, size_t nelem) {
  void *rv = malloc(size * nelem);
  if (rv)
    memset(rv, 0, size * nelem);
  return rv;
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<calloc>:
  endbr64
  push   %r13
  imul   %rsi,%rdi
  push   %r12
  mov    %rdi,%r13
  sub    $0x8,%rsp
  call   <malloc@plt>
  mov    %rax,%r12
  test   %rax,%rax
  je     L2
  mov    %r13,%rdx
  xor    %esi,%esi
  mov    %rax,%rdi
  call   <memset@plt>
L2:
  add    $0x8,%rsp
  mov    %r12,%rax
  pop    %r12
  pop    %r13
  ret
```

assistant: ```c
void *calloc(size_t size, size_t nelem) {
  void *rv = malloc(size * nelem);
  if (rv)
    memset(rv, 0, size * nelem);
  return rv;
}
```
user: 请从给定的汇编指令推导出C源代码：

```asm
<calloc>:
  endbr64
  push   %r13
  imul   %rsi,%rdi
  push   %r12
  mov    %rdi,%r13
  sub    $0x8,%rsp
  call   <malloc@plt>
  mov    %rax,%r12
  test   %rax,%rax
  je     L4
  mov    %r13,%rdx
  xor    %esi,%esi
  mov    %rax,%rdi
  call   <memset@plt>
L4:
  add    $0x8,%rsp
  mov    %r12,%rax
  pop    %r12
  pop    %r13
  ret
```

assistant: ```c
void *calloc(size_t size, size_t nelem) {
  void *rv = malloc(size * nelem);
  if (rv)
    memset(rv, 0, size * nelem);
  return rv;
}
```
user: 请从给定的汇编指令推导出C源代码：

```asm
<pocetDni>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %edi,-0x14(%rbp)
  mov    %esi,-0x18(%rbp)
  mov    %edx,-0x1c(%rbp)
  mov    %ecx,-0x20(%rbp)
  movl   $0x0,-0x8(%rbp)
  movl   $0x0,-0x4(%rbp)
  cmpl   $0x1,-0x20(%rbp)
  jne    L52
  movl   $0x1,-0x8(%rbp)
  jmp    L18
L29:
  mov    -0x1c(%rbp),%edx
  mov    -0x8(%rbp),%eax
  mov    %edx,%esi
  mov    %eax,%edi
  call   <pocetDniVMesici@plt>
  mov    %eax,%edx
  mov    -0x4(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0x4(%rbp)
  addl   $0x1,-0x8(%rbp)
L18:
  mov    -0x8(%rbp),%eax
  cmp    -0x18(%rbp),%eax
  jl     L29
  mov    -0x14(%rbp),%eax
  sub    $0x1,%eax
  add    %eax,-0x4(%rbp)
  jmp    L15
L52:
  mov    -0x1c(%rbp),%edx
  mov    -0x18(%rbp),%eax
  mov    %edx,%esi
  mov    %eax,%edi
  call   <pocetDniVMesici@plt>
  mov    -0x14(%rbp),%edx
  movslq %edx,%rdx
  sub    %rdx,%rax
  mov    %eax,%edx
  mov    -0x4(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0x4(%rbp)
  mov    -0x18(%rbp),%eax
  add    $0x1,%eax
  mov    %eax,-0x8(%rbp)
  jmp    L19
L49:
  mov    -0x1c(%rbp),%edx
  mov    -0x8(%rbp),%eax
  mov    %edx,%esi
  mov    %eax,%edi
  call   <pocetDniVMesici@plt>
  mov    %eax,%edx
  mov    -0x4(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0x4(%rbp)
  addl   $0x1,-0x8(%rbp)
L19:
  cmpl   $0xc,-0x8(%rbp)
  jle    L49
L15:
  mov    -0x4(%rbp),%eax
  leave
  ret
```

assistant: ```c
int pocetDni(int d, int m, int p, int od) {
  int i = 0;
  int dny = 0;
  if (od == 1) {
    for (i = 1; i < m; i++) {
      dny += pocetDniVMesici(i, p);
    }
    dny += d - 1;
  } else {
    dny += pocetDniVMesici(m, p) - d;
    for (i = m + 1; i <= 12; i++) {
      dny += pocetDniVMesici(i, p);
    }
  }
  return dny;
}
```
user: Translate the below assembly code into C programming language:

```asm
<pocetDni>:
  endbr64
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %edi,%r13d
  mov    %esi,%ebx
  mov    %edx,%r12d
  cmp    $0x1,%ecx
  jne    L61
  mov    %ecx,%ebp
  cmp    $0x1,%esi
  jle    L44
  mov    $0x0,%r14d
L54:
  mov    %r12d,%esi
  mov    %ebp,%edi
  call   <pocetDniVMesici@plt>
  add    %eax,%r14d
  add    $0x1,%ebp
  cmp    %ebp,%ebx
  jne    L54
L42:
  lea    -0x1(%r14,%r13,1),%ebp
L3:
  mov    %ebp,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
L44:
  mov    $0x0,%r14d
  jmp    L42
L61:
  mov    %edx,%esi
  mov    %ebx,%edi
  call   <pocetDniVMesici@plt>
  mov    %eax,%ebp
  sub    %r13d,%ebp
  add    $0x1,%ebx
  cmp    $0xc,%ebx
  jg     L3
L30:
  mov    %r12d,%esi
  mov    %ebx,%edi
  call   <pocetDniVMesici@plt>
  add    %eax,%ebp
  add    $0x1,%ebx
  cmp    $0xd,%ebx
  jne    L30
  jmp    L3
```

assistant: ```c
int pocetDni(int d, int m, int p, int od) {
  int i = 0;
  int dny = 0;
  if (od == 1) {
    for (i = 1; i < m; i++) {
      dny += pocetDniVMesici(i, p);
    }
    dny += d - 1;
  } else {
    dny += pocetDniVMesici(m, p) - d;
    for (i = m + 1; i <= 12; i++) {
      dny += pocetDniVMesici(i, p);
    }
  }
  return dny;
}
```
user: What is the c source code of the assembly code below:

```asm
<pocetDni>:
  endbr64
  push   %r14
  mov    %edi,%r14d
  push   %r13
  push   %r12
  mov    %edx,%r12d
  push   %rbp
  push   %rbx
  mov    %esi,%ebx
  cmp    $0x1,%ecx
  jne    L14
  cmp    $0x1,%esi
  jle    L17
  mov    %ecx,%ebp
  xor    %r13d,%r13d
  nopl   0x0(%rax,%rax,1)
L22:
  mov    %ebp,%edi
  mov    %r12d,%esi
  add    $0x1,%ebp
  call   <pocetDniVMesici@plt>
  add    %eax,%r13d
  cmp    %ebp,%ebx
  jne    L22
L4:
  lea    -0x1(%r13,%r14,1),%r13d
L26:
  pop    %rbx
  mov    %r13d,%eax
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
  nopl   (%rax)
L14:
  mov    %ebx,%edi
  mov    %edx,%esi
  add    $0x1,%ebx
  call   <pocetDniVMesici@plt>
  mov    %eax,%r13d
  sub    %r14d,%r13d
  cmp    $0xc,%ebx
  jg     L26
  nopw   0x0(%rax,%rax,1)
L38:
  mov    %ebx,%edi
  mov    %r12d,%esi
  add    $0x1,%ebx
  call   <pocetDniVMesici@plt>
  add    %eax,%r13d
  cmp    $0xd,%ebx
  jne    L38
  pop    %rbx
  mov    %r13d,%eax
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
  nopl   0x0(%rax)
L17:
  xor    %r13d,%r13d
  jmp    L4
```

assistant: ```c
int pocetDni(int d, int m, int p, int od) {
  int i = 0;
  int dny = 0;
  if (od == 1) {
    for (i = 1; i < m; i++) {
      dny += pocetDniVMesici(i, p);
    }
    dny += d - 1;
  } else {
    dny += pocetDniVMesici(m, p) - d;
    for (i = m + 1; i <= 12; i++) {
      dny += pocetDniVMesici(i, p);
    }
  }
  return dny;
}
```
user: Translate the below assembly code into C programming language:

```asm
<pocetDni>:
  endbr64
  push   %r14
  mov    %edi,%r14d
  push   %r13
  push   %r12
  mov    %edx,%r12d
  push   %rbp
  push   %rbx
  mov    %esi,%ebx
  cmp    $0x1,%ecx
  jne    L2
  cmp    $0x1,%esi
  jle    L35
  mov    %ecx,%ebp
  xor    %r13d,%r13d
  nopl   0x0(%rax,%rax,1)
L52:
  mov    %ebp,%edi
  mov    %r12d,%esi
  add    $0x1,%ebp
  call   <pocetDniVMesici@plt>
  add    %eax,%r13d
  cmp    %ebp,%ebx
  jne    L52
L50:
  lea    -0x1(%r13,%r14,1),%r13d
L30:
  pop    %rbx
  mov    %r13d,%eax
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
  nopl   (%rax)
L2:
  mov    %ebx,%edi
  mov    %edx,%esi
  add    $0x1,%ebx
  call   <pocetDniVMesici@plt>
  mov    %eax,%r13d
  sub    %r14d,%r13d
  cmp    $0xc,%ebx
  jg     L30
  nopw   0x0(%rax,%rax,1)
L1:
  mov    %ebx,%edi
  mov    %r12d,%esi
  add    $0x1,%ebx
  call   <pocetDniVMesici@plt>
  add    %eax,%r13d
  cmp    $0xd,%ebx
  jne    L1
  pop    %rbx
  mov    %r13d,%eax
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
  nopl   0x0(%rax)
L35:
  xor    %r13d,%r13d
  jmp    L50
```

assistant: ```c
int pocetDni(int d, int m, int p, int od) {
  int i = 0;
  int dny = 0;
  if (od == 1) {
    for (i = 1; i < m; i++) {
      dny += pocetDniVMesici(i, p);
    }
    dny += d - 1;
  } else {
    dny += pocetDniVMesici(m, p) - d;
    for (i = m + 1; i <= 12; i++) {
      dny += pocetDniVMesici(i, p);
    }
  }
  return dny;
}
```
user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<replace_ltgt>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x18(%rbp)
  movl   $0x0,-0xc(%rbp)
  cmpq   $0x0,-0x18(%rbp)
  jne    L50
  mov    $0x0,%eax
  jmp    L31
L50:
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  shl    $0x2,%eax
  add    $0x1,%eax
  mov    %eax,%edi
  call   <malloc@plt>
  mov    %rax,-0x8(%rbp)
  movl   $0x0,-0x10(%rbp)
  jmp    L6
L78:
  mov    -0x10(%rbp),%edx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  cmp    $0x3c,%al
  jne    L47
  mov    -0xc(%rbp),%edx
  mov    -0x8(%rbp),%rax
  add    %rdx,%rax
  movb   $0x26,(%rax)
  mov    -0xc(%rbp),%eax
  add    $0x1,%eax
  mov    %eax,%edx
  mov    -0x8(%rbp),%rax
  add    %rdx,%rax
  movb   $0x6c,(%rax)
  mov    -0xc(%rbp),%eax
  add    $0x2,%eax
  mov    %eax,%edx
  mov    -0x8(%rbp),%rax
  add    %rdx,%rax
  movb   $0x74,(%rax)
  mov    -0xc(%rbp),%eax
  add    $0x3,%eax
  mov    %eax,%edx
  mov    -0x8(%rbp),%rax
  add    %rdx,%rax
  movb   $0x3b,(%rax)
  addl   $0x3,-0xc(%rbp)
  jmp    L68
L47:
  mov    -0x10(%rbp),%edx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  cmp    $0x3e,%al
  jne    L64
  mov    -0xc(%rbp),%edx
  mov    -0x8(%rbp),%rax
  add    %rdx,%rax
  movb   $0x26,(%rax)
  mov    -0xc(%rbp),%eax
  add    $0x1,%eax
  mov    %eax,%edx
  mov    -0x8(%rbp),%rax
  add    %rdx,%rax
  movb   $0x67,(%rax)
  mov    -0xc(%rbp),%eax
  add    $0x2,%eax
  mov    %eax,%edx
  mov    -0x8(%rbp),%rax
  add    %rdx,%rax
  movb   $0x74,(%rax)
  mov    -0xc(%rbp),%eax
  add    $0x3,%eax
  mov    %eax,%edx
  mov    -0x8(%rbp),%rax
  add    %rdx,%rax
  movb   $0x3b,(%rax)
  addl   $0x3,-0xc(%rbp)
  jmp    L68
L64:
  mov    -0x10(%rbp),%edx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    -0xc(%rbp),%ecx
  mov    -0x8(%rbp),%rdx
  add    %rcx,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
L68:
  addl   $0x1,-0xc(%rbp)
  addl   $0x1,-0x10(%rbp)
L6:
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  cmp    %eax,-0x10(%rbp)
  jb     L78
  mov    -0xc(%rbp),%edx
  mov    -0x8(%rbp),%rax
  add    %rdx,%rax
  movb   $0x0,(%rax)
  mov    -0x8(%rbp),%rax
L31:
  leave
  ret
```

assistant: ```c
char *replace_ltgt(char *str) {
  unsigned int i, j = 0;
  char *newstring;
  if (str == NULL)
    return NULL;
  newstring = (char *)malloc(sizeof(char) * (strlen(str) * 4 + 1));
  for (i = 0; i < strlen(str); i++) {
    if (str[i] == '<') {
      newstring[j] = '&';
      newstring[j + 1] = 'l';
      newstring[j + 2] = 't';
      newstring[j + 3] = ';';
      j += 3;
    } else if (str[i] == '>') {
      newstring[j] = '&';
      newstring[j + 1] = 'g';
      newstring[j + 2] = 't';
      newstring[j + 3] = ';';
      j += 3;
    } else
      newstring[j] = str[i];
    j++;
  }
  newstring[j] = '\0';
  return newstring;
}
```
user: 请将以下的汇编代码转换成C语言代码:

```asm
<replace_ltgt>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    %rdi,%r13
  test   %rdi,%rdi
  je     L29
  call   <strlen@plt>
  lea    0x1(,%rax,4),%edi
  call   <malloc@plt>
  mov    %rax,%r12
  mov    $0x0,%ebx
  mov    $0x0,%ebp
  jmp    L9
L17:
  mov    %ebx,%eax
  movb   $0x26,(%r12,%rax,1)
  lea    0x1(%rbx),%eax
  movb   $0x6c,(%r12,%rax,1)
  lea    0x2(%rbx),%eax
  movb   $0x74,(%r12,%rax,1)
  add    $0x3,%ebx
  mov    %ebx,%eax
  movb   $0x3b,(%r12,%rax,1)
L68:
  add    $0x1,%ebx
  add    $0x1,%ebp
L9:
  mov    %r13,%rdi
  call   <strlen@plt>
  cmp    %ebp,%eax
  jbe    L71
  mov    %ebp,%eax
  movzbl 0x0(%r13,%rax,1),%eax
  cmp    $0x3c,%al
  je     L17
  cmp    $0x3e,%al
  je     L6
  mov    %ebx,%edx
  mov    %al,(%r12,%rdx,1)
  jmp    L68
L6:
  mov    %ebx,%eax
  movb   $0x26,(%r12,%rax,1)
  lea    0x1(%rbx),%eax
  movb   $0x67,(%r12,%rax,1)
  lea    0x2(%rbx),%eax
  movb   $0x74,(%r12,%rax,1)
  add    $0x3,%ebx
  mov    %ebx,%eax
  movb   $0x3b,(%r12,%rax,1)
  jmp    L68
L71:
  mov    %ebx,%ebx
  movb   $0x0,(%r12,%rbx,1)
L72:
  mov    %r12,%rax
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L29:
  mov    %rdi,%r12
  jmp    L72
```

assistant: ```c
char *replace_ltgt(char *str) {
  unsigned int i, j = 0;
  char *newstring;
  if (str == NULL)
    return NULL;
  newstring = (char *)malloc(sizeof(char) * (strlen(str) * 4 + 1));
  for (i = 0; i < strlen(str); i++) {
    if (str[i] == '<') {
      newstring[j] = '&';
      newstring[j + 1] = 'l';
      newstring[j + 2] = 't';
      newstring[j + 3] = ';';
      j += 3;
    } else if (str[i] == '>') {
      newstring[j] = '&';
      newstring[j + 1] = 'g';
      newstring[j + 2] = 't';
      newstring[j + 3] = ';';
      j += 3;
    } else
      newstring[j] = str[i];
    j++;
  }
  newstring[j] = '\0';
  return newstring;
}
```
user: 下面的汇编指令对应的C源代码是什么：

```asm
<replace_ltgt>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  test   %rdi,%rdi
  je     L65
  mov    %rdi,%r13
  xor    %ebx,%ebx
  xor    %ebp,%ebp
  call   <strlen@plt>
  lea    0x1(,%rax,4),%edi
  call   <malloc@plt>
  mov    %rax,%r12
  jmp    L53
  nopl   0x0(%rax)
L25:
  cmp    $0x3e,%sil
  je     L12
  mov    %sil,(%rax)
L57:
  mov    %edx,%ebx
  add    $0x1,%ebp
L53:
  mov    %r13,%rdi
  call   <strlen@plt>
  mov    %eax,%r8d
  mov    %ebx,%eax
  add    %r12,%rax
  cmp    %ebp,%r8d
  jbe    L31
  mov    %ebp,%edx
  lea    0x1(%rbx),%ecx
  movzbl 0x0(%r13,%rdx,1),%esi
  mov    %rcx,%rdx
  add    %r12,%rcx
  cmp    $0x3c,%sil
  jne    L25
  movb   $0x26,(%rax)
  movb   $0x6c,(%rcx)
L22:
  lea    0x2(%rbx),%eax
  movb   $0x74,(%r12,%rax,1)
  lea    0x3(%rbx),%eax
  movb   $0x3b,(%r12,%rax,1)
  lea    0x1(%rax),%edx
  jmp    L57
  nopl   (%rax)
L12:
  movb   $0x26,(%rax)
  movb   $0x67,(%rcx)
  jmp    L22
  nopl   0x0(%rax,%rax,1)
L31:
  movb   $0x0,(%rax)
  add    $0x8,%rsp
  mov    %r12,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopl   0x0(%rax)
L65:
  add    $0x8,%rsp
  xor    %r12d,%r12d
  pop    %rbx
  mov    %r12,%rax
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
```

assistant: ```c
char *replace_ltgt(char *str) {
  unsigned int i, j = 0;
  char *newstring;
  if (str == NULL)
    return NULL;
  newstring = (char *)malloc(sizeof(char) * (strlen(str) * 4 + 1));
  for (i = 0; i < strlen(str); i++) {
    if (str[i] == '<') {
      newstring[j] = '&';
      newstring[j + 1] = 'l';
      newstring[j + 2] = 't';
      newstring[j + 3] = ';';
      j += 3;
    } else if (str[i] == '>') {
      newstring[j] = '&';
      newstring[j + 1] = 'g';
      newstring[j + 2] = 't';
      newstring[j + 3] = ';';
      j += 3;
    } else
      newstring[j] = str[i];
    j++;
  }
  newstring[j] = '\0';
  return newstring;
}
```
user: What would the C source look like for the assembly code provided here:

```asm
<replace_ltgt>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  test   %rdi,%rdi
  je     L61
  mov    %rdi,%r13
  xor    %ebx,%ebx
  xor    %ebp,%ebp
  call   <strlen@plt>
  lea    0x1(,%rax,4),%edi
  call   <malloc@plt>
  mov    %rax,%r12
  jmp    L56
  nopl   0x0(%rax)
L12:
  cmp    $0x3e,%sil
  je     L59
  mov    %sil,(%rax)
L64:
  mov    %edx,%ebx
  add    $0x1,%ebp
L56:
  mov    %r13,%rdi
  call   <strlen@plt>
  mov    %eax,%r8d
  mov    %ebx,%eax
  add    %r12,%rax
  cmp    %ebp,%r8d
  jbe    L57
  mov    %ebp,%edx
  lea    0x1(%rbx),%ecx
  movzbl 0x0(%r13,%rdx,1),%esi
  mov    %rcx,%rdx
  add    %r12,%rcx
  cmp    $0x3c,%sil
  jne    L12
  movb   $0x26,(%rax)
  movb   $0x6c,(%rcx)
L32:
  lea    0x2(%rbx),%eax
  movb   $0x74,(%r12,%rax,1)
  lea    0x3(%rbx),%eax
  movb   $0x3b,(%r12,%rax,1)
  lea    0x1(%rax),%edx
  jmp    L64
  nopl   (%rax)
L59:
  movb   $0x26,(%rax)
  movb   $0x67,(%rcx)
  jmp    L32
  nopl   0x0(%rax,%rax,1)
L57:
  movb   $0x0,(%rax)
  add    $0x8,%rsp
  mov    %r12,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopl   0x0(%rax)
L61:
  add    $0x8,%rsp
  xor    %r12d,%r12d
  pop    %rbx
  mov    %r12,%rax
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
```

assistant: ```c
char *replace_ltgt(char *str) {
  unsigned int i, j = 0;
  char *newstring;
  if (str == NULL)
    return NULL;
  newstring = (char *)malloc(sizeof(char) * (strlen(str) * 4 + 1));
  for (i = 0; i < strlen(str); i++) {
    if (str[i] == '<') {
      newstring[j] = '&';
      newstring[j + 1] = 'l';
      newstring[j + 2] = 't';
      newstring[j + 3] = ';';
      j += 3;
    } else if (str[i] == '>') {
      newstring[j] = '&';
      newstring[j + 1] = 'g';
      newstring[j + 2] = 't';
      newstring[j + 3] = ';';
      j += 3;
    } else
      newstring[j] = str[i];
    j++;
  }
  newstring[j] = '\0';
  return newstring;
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<RmTrailingSpaces>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x18(%rbp)
  cmpq   $0x0,-0x18(%rbp)
  je     L14
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  sub    $0x1,%eax
  mov    %eax,-0x4(%rbp)
  jmp    L23
L17:
  subl   $0x1,-0x4(%rbp)
L23:
  cmpl   $0x0,-0x4(%rbp)
  js     L35
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  mov    %eax,%edi
  call   <isspace@plt>
  test   %rax,%rax
  jne    L17
L35:
  addl   $0x1,-0x4(%rbp)
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movb   $0x0,(%rax)
L14:
  mov    -0x18(%rbp),%rax
  leave
  ret
```

assistant: ```c
char *RmTrailingSpaces(char *str) {
  if (str) {
    int i;
    for (i = strlen(str) - 1; i >= 0 && isspace(str[i]); --i)
      ;
    str[++i] = '\0';
  }
  return str;
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<RmTrailingSpaces>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%r12
  test   %rdi,%rdi
  je     L37
  call   <strlen@plt>
  sub    $0x1,%eax
  mov    %eax,%ebx
  js     L16
  movslq %eax,%rbp
  add    %r12,%rbp
L6:
  movsbl 0x0(%rbp),%edi
  call   <isspace@plt>
  test   %rax,%rax
  je     L16
  sub    $0x1,%ebx
  sub    $0x1,%rbp
  cmp    $0xffffffff,%ebx
  jne    L6
L16:
  add    $0x1,%ebx
  movslq %ebx,%rbx
  movb   $0x0,(%r12,%rbx,1)
L37:
  mov    %r12,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
```

assistant: ```c
char *RmTrailingSpaces(char *str) {
  if (str) {
    int i;
    for (i = strlen(str) - 1; i >= 0 && isspace(str[i]); --i)
      ;
    str[++i] = '\0';
  }
  return str;
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<RmTrailingSpaces>:
  endbr64
  push   %r13
  push   %r12
  mov    %rdi,%r12
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  test   %rdi,%rdi
  je     L33
  call   <strlen@plt>
  mov    %eax,%ebp
  sub    $0x1,%ebp
  js     L42
  movslq %ebp,%rbx
  add    %r12,%rbx
  jmp    L51
  nopw   0x0(%rax,%rax,1)
L10:
  sub    $0x1,%ebp
  sub    $0x1,%rbx
  cmp    $0xffffffff,%ebp
  je     L49
L51:
  movsbl (%rbx),%edi
  mov    %rbx,%r13
  call   <isspace@plt>
  test   %rax,%rax
  jne    L10
  add    $0x1,%ebp
  movslq %ebp,%rbp
  lea    (%r12,%rbp,1),%r13
L49:
  movb   $0x0,0x0(%r13)
L33:
  add    $0x8,%rsp
  mov    %r12,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L42:
  cltq
  lea    (%r12,%rax,1),%r13
  jmp    L49
```

assistant: ```c
char *RmTrailingSpaces(char *str) {
  if (str) {
    int i;
    for (i = strlen(str) - 1; i >= 0 && isspace(str[i]); --i)
      ;
    str[++i] = '\0';
  }
  return str;
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<RmTrailingSpaces>:
  endbr64
  push   %r13
  push   %r12
  mov    %rdi,%r12
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  test   %rdi,%rdi
  je     L7
  call   <strlen@plt>
  mov    %eax,%ebp
  sub    $0x1,%ebp
  js     L50
  movslq %ebp,%rbx
  add    %r12,%rbx
  jmp    L43
  nopw   0x0(%rax,%rax,1)
L31:
  sub    $0x1,%ebp
  sub    $0x1,%rbx
  cmp    $0xffffffff,%ebp
  je     L44
L43:
  movsbl (%rbx),%edi
  mov    %rbx,%r13
  call   <isspace@plt>
  test   %rax,%rax
  jne    L31
  add    $0x1,%ebp
  movslq %ebp,%rbp
  lea    (%r12,%rbp,1),%r13
L44:
  movb   $0x0,0x0(%r13)
L7:
  add    $0x8,%rsp
  mov    %r12,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L50:
  cltq
  lea    (%r12,%rax,1),%r13
  jmp    L44
```

assistant: ```c
char *RmTrailingSpaces(char *str) {
  if (str) {
    int i;
    for (i = strlen(str) - 1; i >= 0 && isspace(str[i]); --i)
      ;
    str[++i] = '\0';
  }
  return str;
}
```