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

```asm
<strtoarray>:
  endbr64
  push   %r15
  push   %r14
  mov    %rdx,%r14
  push   %r13
  push   %r12
  xor    %r12d,%r12d
  push   %rbp
  mov    %rsi,%rbp
  push   %rbx
  mov    %rdi,%rbx
  sub    $0x28,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  lea    0x10(%rsp),%r13
  call   <strlen@plt>
  lea    0x1(%rax),%edi
  call   <malloc@plt>
  mov    %rbx,%rsi
  mov    %rax,%r15
  mov    %rax,%rdi
  mov    %rax,0x8(%rsp)
  call   <strcpy@plt>
  mov    %r15,0x10(%rsp)
  jmp    L41
  nopw   0x0(%rax,%rax,1)
L39:
  add    $0x1,%r12d
L41:
  mov    %rbp,%rsi
  mov    %r13,%rdi
  call   <strsep@plt>
  test   %rax,%rax
  jne    L39
  lea    0x0(,%r12,8),%edi
  call   <malloc@plt>
  mov    %rbx,%rsi
  mov    0x8(%rsp),%rbx
  mov    %rax,(%r14)
  mov    %rbx,%rdi
  call   <strcpy@plt>
  mov    %rbx,0x10(%rsp)
  xor    %ebx,%ebx
  jmp    L34
  nopl   (%rax)
L30:
  mov    %r15,%rdi
  call   <strlen@plt>
  lea    0x1(%rax),%edi
  call   <malloc@plt>
  mov    %r15,%rsi
  mov    %rax,%rdi
  mov    (%r14),%rax
  mov    %rdi,(%rax,%rbx,1)
  add    $0x8,%rbx
  call   <strcpy@plt>
L34:
  mov    %rbp,%rsi
  mov    %r13,%rdi
  call   <strsep@plt>
  mov    %rax,%r15
  test   %rax,%rax
  jne    L30
  mov    0x8(%rsp),%rdi
  call   <free@plt>
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L43
  add    $0x28,%rsp
  mov    %r12d,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L43:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int strtoarray(char *str, char *sep, char ***list) {
  int len = strlen(str);
  char *copystr = (char *)malloc((len + 1) * sizeof(char));
  strcpy(copystr, str);
  int sizelist = 0;
  char *cur, *temp;
  temp = copystr;
  while ((cur = strsep(&temp, sep))) {
    sizelist++;
  }
  (*list) = (char **)malloc(sizelist * sizeof(char *));
  int i = 0;
  int curlen;
  strcpy(copystr, str);
  temp = copystr;
  while ((cur = strsep(&temp, sep))) {
    curlen = strlen(cur);
    (*list)[i] = (char *)malloc((curlen + 1) * sizeof(char));
    strcpy((*list)[i], cur);
    i++;
  }
  free(copystr);
  return sizelist;
}
```
user: 请将以下的汇编代码转换成C语言代码:

```asm
<CPC_Finish>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    $0x0,%eax
  call   <Render_Finish@plt>
  mov    $0x0,%eax
  call   <Cassette_Finish@plt>
  mov    $0x0,%eax
  call   <AudioEvent_Finish@plt>
  mov    $0x0,%eax
  call   <Cartridge_Remove@plt>
  mov    $0x0,%eax
  call   <ASIC_Finish@plt>
  mov    $0x0,%eax
  call   <ExpansionRom_Finish@plt>
  mov    $0x0,%eax
  call   <FreeEmulatorMemory@plt>
  mov    $0x0,%eax
  call   <DiskImage_Finish@plt>
  mov    $0x0,%eax
  call   <Tape_Remove@plt>
  nop
  pop    %rbp
  ret
```

assistant: ```c
void CPC_Finish(void) {
  Render_Finish();
  Cassette_Finish();
  AudioEvent_Finish();
  Cartridge_Remove();
  ASIC_Finish();
  ExpansionRom_Finish();
  FreeEmulatorMemory();
  DiskImage_Finish();
  Tape_Remove();
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<CPC_Finish>:
  endbr64
  sub    $0x8,%rsp
  mov    $0x0,%eax
  call   <Render_Finish@plt>
  mov    $0x0,%eax
  call   <Cassette_Finish@plt>
  mov    $0x0,%eax
  call   <AudioEvent_Finish@plt>
  mov    $0x0,%eax
  call   <Cartridge_Remove@plt>
  mov    $0x0,%eax
  call   <ASIC_Finish@plt>
  mov    $0x0,%eax
  call   <ExpansionRom_Finish@plt>
  mov    $0x0,%eax
  call   <FreeEmulatorMemory@plt>
  mov    $0x0,%eax
  call   <DiskImage_Finish@plt>
  mov    $0x0,%eax
  call   <Tape_Remove@plt>
  add    $0x8,%rsp
  ret
```

assistant: ```c
void CPC_Finish(void) {
  Render_Finish();
  Cassette_Finish();
  AudioEvent_Finish();
  Cartridge_Remove();
  ASIC_Finish();
  ExpansionRom_Finish();
  FreeEmulatorMemory();
  DiskImage_Finish();
  Tape_Remove();
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<CPC_Finish>:
  endbr64
  sub    $0x8,%rsp
  xor    %eax,%eax
  call   <Render_Finish@plt>
  xor    %eax,%eax
  call   <Cassette_Finish@plt>
  xor    %eax,%eax
  call   <AudioEvent_Finish@plt>
  xor    %eax,%eax
  call   <Cartridge_Remove@plt>
  xor    %eax,%eax
  call   <ASIC_Finish@plt>
  xor    %eax,%eax
  call   <ExpansionRom_Finish@plt>
  xor    %eax,%eax
  call   <FreeEmulatorMemory@plt>
  xor    %eax,%eax
  call   <DiskImage_Finish@plt>
  xor    %eax,%eax
  add    $0x8,%rsp
  jmp    1120 <Tape_Remove@plt>
```

assistant: ```c
void CPC_Finish(void) {
  Render_Finish();
  Cassette_Finish();
  AudioEvent_Finish();
  Cartridge_Remove();
  ASIC_Finish();
  ExpansionRom_Finish();
  FreeEmulatorMemory();
  DiskImage_Finish();
  Tape_Remove();
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<CPC_Finish>:
  endbr64
  sub    $0x8,%rsp
  xor    %eax,%eax
  call   <Render_Finish@plt>
  xor    %eax,%eax
  call   <Cassette_Finish@plt>
  xor    %eax,%eax
  call   <AudioEvent_Finish@plt>
  xor    %eax,%eax
  call   <Cartridge_Remove@plt>
  xor    %eax,%eax
  call   <ASIC_Finish@plt>
  xor    %eax,%eax
  call   <ExpansionRom_Finish@plt>
  xor    %eax,%eax
  call   <FreeEmulatorMemory@plt>
  xor    %eax,%eax
  call   <DiskImage_Finish@plt>
  xor    %eax,%eax
  add    $0x8,%rsp
  jmp    1120 <Tape_Remove@plt>
```

assistant: ```c
void CPC_Finish(void) {
  Render_Finish();
  Cassette_Finish();
  AudioEvent_Finish();
  Cartridge_Remove();
  ASIC_Finish();
  ExpansionRom_Finish();
  FreeEmulatorMemory();
  DiskImage_Finish();
  Tape_Remove();
}
```
user: What would the C source look like for the assembly code provided here?

```asm
<__libc_fsync>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x10,%rsp
  mov    %edi,-0x4(%rbp)
  mov    -0x4(%rbp),%eax
  mov    %eax,%edi
  call   <__syscall_fsync@plt>
  leave
  ret
```

assistant: ```c
int __libc_fsync(int fd) {
  if (1)
    return __syscall_fsync(fd);
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<__libc_fsync>:
  endbr64
  sub    $0x8,%rsp
  call   <__syscall_fsync@plt>
  add    $0x8,%rsp
  ret
```

assistant: ```c
int __libc_fsync(int fd) {
  if (1)
    return __syscall_fsync(fd);
}
```
user: What would the C source look like for the assembly code provided here?

```asm
<__libc_fsync>:
  endbr64
  jmp    1050 <__syscall_fsync@plt>
```

assistant: ```c
int __libc_fsync(int fd) {
  if (1)
    return __syscall_fsync(fd);
}
```
user: 这段汇编代码用C语言表示是什么样的?

```asm
<__libc_fsync>:
  endbr64
  jmp    1050 <__syscall_fsync@plt>
```

assistant: ```c
int __libc_fsync(int fd) {
  if (1)
    return __syscall_fsync(fd);
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<stress_munmap_clean_path>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x18(%rbp)
  mov    -0x18(%rbp),%rax
  mov    %rax,-0x8(%rbp)
  jmp    L31
L24:
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  mov    %eax,%edi
  call   <isspace@plt>
  test   %rax,%rax
  je     L7
  mov    -0x8(%rbp),%rax
  movb   $0x0,(%rax)
  jmp    L3
L7:
  addq   $0x1,-0x8(%rbp)
L31:
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  test   %al,%al
  jne    L24
  nop
L3:
  nop
  leave
  ret
```

assistant: ```c
void stress_munmap_clean_path(char *path) {
  char *ptr = path;
  while (*ptr) {
    if (isspace((int)*ptr)) {
      *ptr = '\0';
      break;
    }
    ptr++;
  }
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<stress_munmap_clean_path>:
  endbr64
  push   %rbx
  mov    %rdi,%rbx
  movzbl (%rdi),%edi
  test   %dil,%dil
  je     L6
L23:
  movsbl %dil,%edi
  call   <isspace@plt>
  test   %rax,%rax
  jne    L10
  add    $0x1,%rbx
  movzbl (%rbx),%edi
  test   %dil,%dil
  jne    L23
  jmp    L6
L10:
  movb   $0x0,(%rbx)
L6:
  pop    %rbx
  ret
```

assistant: ```c
void stress_munmap_clean_path(char *path) {
  char *ptr = path;
  while (*ptr) {
    if (isspace((int)*ptr)) {
      *ptr = '\0';
      break;
    }
    ptr++;
  }
}
```
user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<stress_munmap_clean_path>:
  endbr64
  push   %rbx
  mov    %rdi,%rbx
  movsbl (%rdi),%edi
  test   %dil,%dil
  jne    L4
  jmp    L12
  nopw   0x0(%rax,%rax,1)
L1:
  movsbl 0x1(%rbx),%edi
  add    $0x1,%rbx
  test   %dil,%dil
  je     L12
L4:
  call   <isspace@plt>
  test   %rax,%rax
  je     L1
  movb   $0x0,(%rbx)
L12:
  pop    %rbx
  ret
```

assistant: ```c
void stress_munmap_clean_path(char *path) {
  char *ptr = path;
  while (*ptr) {
    if (isspace((int)*ptr)) {
      *ptr = '\0';
      break;
    }
    ptr++;
  }
}
```
user: 请从给定的汇编指令推导出C源代码:

```asm
<stress_munmap_clean_path>:
  endbr64
  push   %rbx
  mov    %rdi,%rbx
  movsbl (%rdi),%edi
  test   %dil,%dil
  jne    L14
  jmp    L18
  nopw   0x0(%rax,%rax,1)
L17:
  movsbl 0x1(%rbx),%edi
  add    $0x1,%rbx
  test   %dil,%dil
  je     L18
L14:
  call   <isspace@plt>
  test   %rax,%rax
  je     L17
  movb   $0x0,(%rbx)
L18:
  pop    %rbx
  ret
```

assistant: ```c
void stress_munmap_clean_path(char *path) {
  char *ptr = path;
  while (*ptr) {
    if (isspace((int)*ptr)) {
      *ptr = '\0';
      break;
    }
    ptr++;
  }
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<ce_unlisten>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x10,%rsp
  mov    %edi,-0x4(%rbp)
  mov    %esi,-0x8(%rbp)
  mov    $0x0,%eax
  call   <ce_poller_initialized@plt>
  test   %eax,%eax
  jne    L37
  lea    D3(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  mov    $0xffffffff,%eax
  jmp    L42
L37:
  mov    -0x8(%rbp),%edx
  mov    -0x4(%rbp),%eax
  mov    %edx,%esi
  mov    %eax,%edi
  call   <ce_poller_lookup@plt>
  test   %rax,%rax
  je     L25
  mov    -0x4(%rbp),%eax
  mov    %eax,%esi
  lea    D19(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0xffffffff,%eax
  jmp    L42
L25:
  mov    -0x8(%rbp),%edx
  mov    -0x4(%rbp),%eax
  mov    %edx,%esi
  mov    %eax,%edi
  call   <ce_poller_remove@plt>
  test   %rax,%rax
  je     L58
  mov    $0xffffffff,%eax
  jmp    L42
L58:
  mov    $0x0,%eax
L42:
  leave
  ret
```

tool_calls: name: parse_data
arguments: label: D3
type_guessed: string
name: parse_data
arguments: label: D19
type_guessed: string

tool: D3: INFO: Poller is not initialized

tool: D19: INFO: Event is not listened on fd %d


assistant: ```c
int ce_unlisten(int fd, int event) {
  if (!ce_poller_initialized()) {
    printf("INFO: Poller is not initialized\n");
    return -1;
  }
  if (ce_poller_lookup(fd, event) != 0) {
    printf("INFO: Event is not listened on fd %d\n", fd);
    return -1;
  }
  if (ce_poller_remove(fd, event) != 0) {
    return -1;
  }
  return 0;
}
```
user: 这段汇编代码用C语言表示是什么样的?

```asm
<ce_unlisten>:
  endbr64
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    %edi,%ebx
  mov    %esi,%ebp
  mov    $0x0,%eax
  call   <ce_poller_initialized@plt>
  test   %eax,%eax
  je     L8
  mov    %ebp,%esi
  mov    %ebx,%edi
  call   <ce_poller_lookup@plt>
  test   %rax,%rax
  jne    L2
  mov    %ebp,%esi
  mov    %ebx,%edi
  call   <ce_poller_remove@plt>
  neg    %rax
  sbb    %eax,%eax
L21:
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  ret
L8:
  lea    D6(%rip),%rdi
  call   <puts@plt>
  mov    $0xffffffff,%eax
  jmp    L21
L2:
  mov    %ebx,%esi
  lea    D12(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0xffffffff,%eax
  jmp    L21
```

tool_calls: name: unpack_data
arguments: label: D6
data_type: string
name: unpack_data
arguments: label: D12
data_type: string

tool: D6: INFO: Poller is not initialized

tool: D12: INFO: Event is not listened on fd %d


assistant: ```c
int ce_unlisten(int fd, int event) {
  if (!ce_poller_initialized()) {
    printf("INFO: Poller is not initialized\n");
    return -1;
  }
  if (ce_poller_lookup(fd, event) != 0) {
    printf("INFO: Event is not listened on fd %d\n", fd);
    return -1;
  }
  if (ce_poller_remove(fd, event) != 0) {
    return -1;
  }
  return 0;
}
```
user: Translate the below assembly code into C programming language:

```asm
<ce_unlisten>:
  endbr64
  push   %r12
  xor    %eax,%eax
  mov    %esi,%r12d
  push   %rbp
  mov    %edi,%ebp
  sub    $0x8,%rsp
  call   <ce_poller_initialized@plt>
  test   %eax,%eax
  je     L22
  mov    %r12d,%esi
  mov    %ebp,%edi
  call   <ce_poller_lookup@plt>
  test   %rax,%rax
  jne    L13
  mov    %r12d,%esi
  mov    %ebp,%edi
  call   <ce_poller_remove@plt>
  neg    %rax
  sbb    %eax,%eax
L26:
  add    $0x8,%rsp
  pop    %rbp
  pop    %r12
  ret
  nopl   0x0(%rax)
L22:
  lea    D19(%rip),%rdi
  call   <puts@plt>
  mov    $0xffffffff,%eax
  jmp    L26
  nopl   0x0(%rax,%rax,1)
L13:
  mov    %ebp,%esi
  lea    D16(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  mov    $0xffffffff,%eax
  jmp    L26
```

tool_calls: name: read_data
arguments: tag: D19
type: string
name: read_data
arguments: tag: D16
type: string

tool: D19: INFO: Poller is not initialized

tool: D16: INFO: Event is not listened on fd %d


assistant: ```c
int ce_unlisten(int fd, int event) {
  if (!ce_poller_initialized()) {
    printf("INFO: Poller is not initialized\n");
    return -1;
  }
  if (ce_poller_lookup(fd, event) != 0) {
    printf("INFO: Event is not listened on fd %d\n", fd);
    return -1;
  }
  if (ce_poller_remove(fd, event) != 0) {
    return -1;
  }
  return 0;
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<ce_unlisten>:
  endbr64
  push   %r12
  xor    %eax,%eax
  mov    %esi,%r12d
  push   %rbp
  mov    %edi,%ebp
  sub    $0x8,%rsp
  call   <ce_poller_initialized@plt>
  test   %eax,%eax
  je     L18
  mov    %r12d,%esi
  mov    %ebp,%edi
  call   <ce_poller_lookup@plt>
  test   %rax,%rax
  jne    L25
  mov    %r12d,%esi
  mov    %ebp,%edi
  call   <ce_poller_remove@plt>
  neg    %rax
  sbb    %eax,%eax
L23:
  add    $0x8,%rsp
  pop    %rbp
  pop    %r12
  ret
  nopl   0x0(%rax)
L18:
  lea    D14(%rip),%rdi
  call   <puts@plt>
  mov    $0xffffffff,%eax
  jmp    L23
  nopl   0x0(%rax,%rax,1)
L25:
  mov    %ebp,%esi
  lea    D11(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  mov    $0xffffffff,%eax
  jmp    L23
```

tool_calls: name: unpack_data
arguments: label: D14
datatype: string
name: unpack_data
arguments: label: D11
datatype: string

tool: D14: INFO: Poller is not initialized

tool: D11: INFO: Event is not listened on fd %d


assistant: ```c
int ce_unlisten(int fd, int event) {
  if (!ce_poller_initialized()) {
    printf("INFO: Poller is not initialized\n");
    return -1;
  }
  if (ce_poller_lookup(fd, event) != 0) {
    printf("INFO: Event is not listened on fd %d\n", fd);
    return -1;
  }
  if (ce_poller_remove(fd, event) != 0) {
    return -1;
  }
  return 0;
}
```
user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<cat>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x18(%rbp)
  mov    %rsi,-0x20(%rbp)
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  mov    %eax,-0x10(%rbp)
  mov    -0x20(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  mov    -0x10(%rbp),%edx
  add    %edx,%eax
  add    $0x2,%eax
  mov    %eax,-0xc(%rbp)
  mov    -0xc(%rbp),%eax
  mov    %eax,%edi
  call   <malloc@plt>
  mov    %rax,-0x8(%rbp)
  mov    -0x18(%rbp),%rdx
  mov    -0x8(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcpy@plt>
  mov    -0x10(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x8(%rbp),%rax
  add    %rdx,%rax
  movb   $0x40,(%rax)
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x1(%rax),%rdx
  mov    -0x8(%rbp),%rax
  add    %rax,%rdx
  mov    -0x20(%rbp),%rax
  mov    %rax,%rsi
  mov    %rdx,%rdi
  call   <strcpy@plt>
  mov    -0xc(%rbp),%eax
  cltq
  lea    -0x1(%rax),%rdx
  mov    -0x8(%rbp),%rax
  add    %rdx,%rax
  movb   $0x0,(%rax)
  mov    -0x8(%rbp),%rax
  leave
  ret
```

assistant: ```c
char *cat(const char *id, const char *addr) {
  int len_id = strlen(id);
  int sz = len_id + strlen(addr) + 2;
  char *res = (char *)malloc(sz);
  strcpy(res, id);
  res[len_id] = '@';
  strcpy(res + len_id + 1, addr);
  res[sz - 1] = 0;
  return res;
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<cat>:
  endbr64
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%r14
  mov    %rsi,%r13
  call   <strlen@plt>
  mov    %eax,%ebp
  mov    %r13,%rdi
  call   <strlen@plt>
  lea    0x2(%rbp,%rax,1),%r12d
  mov    %r12d,%edi
  call   <malloc@plt>
  mov    %rax,%rbx
  mov    %r14,%rsi
  mov    %rax,%rdi
  call   <strcpy@plt>
  movslq %ebp,%rbp
  movb   $0x40,(%rbx,%rbp,1)
  lea    0x1(%rbx,%rbp,1),%rdi
  mov    %r13,%rsi
  call   <strcpy@plt>
  movslq %r12d,%r12
  movb   $0x0,-0x1(%rbx,%r12,1)
  mov    %rbx,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
```

assistant: ```c
char *cat(const char *id, const char *addr) {
  int len_id = strlen(id);
  int sz = len_id + strlen(addr) + 2;
  char *res = (char *)malloc(sz);
  strcpy(res, id);
  res[len_id] = '@';
  strcpy(res + len_id + 1, addr);
  res[sz - 1] = 0;
  return res;
}
```
user: 这段汇编代码用C语言表示是什么样的:

```asm
<cat>:
  endbr64
  push   %r14
  mov    %rdi,%r14
  push   %r13
  mov    %rsi,%r13
  push   %r12
  push   %rbp
  push   %rbx
  call   <strlen@plt>
  mov    %r13,%rdi
  movslq %eax,%rbx
  call   <strlen@plt>
  lea    0x2(%rbx,%rax,1),%ebp
  mov    %ebp,%edi
  movslq %ebp,%rbp
  call   <malloc@plt>
  mov    %r14,%rsi
  mov    %rax,%r12
  mov    %rax,%rdi
  call   <strcpy@plt>
  movb   $0x40,(%r12,%rbx,1)
  lea    0x1(%r12,%rbx,1),%rdi
  mov    %r13,%rsi
  call   <strcpy@plt>
  movb   $0x0,-0x1(%r12,%rbp,1)
  mov    %r12,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
```

assistant: ```c
char *cat(const char *id, const char *addr) {
  int len_id = strlen(id);
  int sz = len_id + strlen(addr) + 2;
  char *res = (char *)malloc(sz);
  strcpy(res, id);
  res[len_id] = '@';
  strcpy(res + len_id + 1, addr);
  res[sz - 1] = 0;
  return res;
}
```
user: What is the c source code of the assembly code below?

```asm
<cat>:
  endbr64
  push   %r14
  mov    %rdi,%r14
  push   %r13
  mov    %rsi,%r13
  push   %r12
  push   %rbp
  push   %rbx
  call   <strlen@plt>
  mov    %r13,%rdi
  movslq %eax,%rbx
  call   <strlen@plt>
  lea    0x2(%rbx,%rax,1),%ebp
  mov    %ebp,%edi
  movslq %ebp,%rbp
  call   <malloc@plt>
  mov    %r14,%rsi
  mov    %rax,%r12
  mov    %rax,%rdi
  call   <strcpy@plt>
  movb   $0x40,(%r12,%rbx,1)
  lea    0x1(%r12,%rbx,1),%rdi
  mov    %r13,%rsi
  call   <strcpy@plt>
  movb   $0x0,-0x1(%r12,%rbp,1)
  mov    %r12,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
```

assistant: ```c
char *cat(const char *id, const char *addr) {
  int len_id = strlen(id);
  int sz = len_id + strlen(addr) + 2;
  char *res = (char *)malloc(sz);
  strcpy(res, id);
  res[len_id] = '@';
  strcpy(res + len_id + 1, addr);
  res[sz - 1] = 0;
  return res;
}
```
user: 请从给定的汇编指令推导出C源代码：

```asm
<extract_string>:
  endbr64
  cmpb   $0x23,(%rdi)
  je     L72
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x18,%rsp
  mov    %rdi,%r14
  mov    %rsi,%r15
  mov    %edx,%r13d
  mov    $0x0,%ebx
  mov    $0xffffffff,%r12d
  movl   $0x0,0xc(%rsp)
  jmp    L87
L117:
  cmpb   $0x22,(%r14,%rbx,1)
  je     L182
L57:
  add    $0x1,%rbx
L87:
  mov    %ebx,0x8(%rsp)
  mov    %ebx,%ebp
  mov    %r14,%rdi
  call   <strlen@plt>
  cmp    %r13d,%eax
  cmovg  %r13d,%eax
  cmp    %ebx,%eax
  jle    L138
  cmp    $0xffffffff,%r12d
  je     L117
  test   %r12d,%r12d
  js     L57
  cmpl   $0x1,0xc(%rsp)
  je     L36
  movzbl (%r14,%rbx,1),%eax
  cmp    $0x5c,%al
  je     L88
  cmp    $0x22,%al
  je     L156
  sub    %r12d,%ebp
  movslq %ebp,%rbp
  mov    %al,(%r15,%rbp,1)
  jmp    L57
L182:
  mov    0x8(%rsp),%r12d
  add    $0x1,%r12d
  jmp    L57
L36:
  movzbl (%r14,%rbx,1),%eax
  cmp    $0x22,%al
  je     L31
  cmp    $0x5c,%al
  je     L31
L168:
  sub    %r12d,%ebp
  movslq %ebp,%rbp
  mov    %al,(%r15,%rbp,1)
  movl   $0x0,0xc(%rsp)
  jmp    L57
L31:
  add    $0x1,%r12d
  jmp    L168
L88:
  sub    %r12d,%ebp
  movslq %ebp,%rbp
  movb   $0x5c,(%r15,%rbp,1)
  movl   $0x1,0xc(%rsp)
  jmp    L57
L156:
  sub    %r12d,%ebp
  movslq %ebp,%rax
  movb   $0x0,(%r15,%rax,1)
  jmp    L153
L138:
  test   %r12d,%r12d
  js     L80
L153:
  mov    %r15,%rdi
  call   <strlen@plt>
L112:
  add    $0x18,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L72:
  mov    $0xffffffff,%eax
  ret
L80:
  mov    $0xffffffff,%eax
  jmp    L112
```

assistant: ```c
int extract_string(const char *src, char *dest, int len) {
  int pos = 0;
  int esc = 0;
  int off = -1;
  if (*src == '#')
    return -1;
  for (pos = 0; (pos < strlen(src)) && (pos < len); pos++) {
    if ((off == -1) && (src[pos] == '"')) {
      off = pos + 1;
    } else if (off >= 0) {
      if (esc == 1) {
        switch (src[pos]) {
        case '"':
        case '\\':
          off++;
          break;
        }
        dest[pos - off] = src[pos];
        esc = 0;
      } else if (src[pos] == '\\') {
        dest[pos - off] = src[pos];
        esc = 1;
      } else if (src[pos] != '"') {
        dest[pos - off] = src[pos];
      } else {
        dest[pos - off] = '\0';
        break;
      }
    }
  }
  return (off > -1) ? strlen(dest) : -1;
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<extract_string>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x18,%rsp
  cmpb   $0x23,(%rdi)
  mov    %rsi,0x8(%rsp)
  je     L82
  movl   $0x0,0x4(%rsp)
  mov    %rdi,%r13
  mov    %edx,%ebp
  xor    %r15d,%r15d
  mov    $0x1,%r12d
  mov    $0xffffffff,%r14d
  jmp    L58
  xchg   %ax,%ax
L134:
  cmpl   $0x1,0x4(%rsp)
  je     L41
  sub    %r14d,%ebx
  movslq %ebx,%rbx
  add    0x8(%rsp),%rbx
  cmp    $0x5c,%al
  je     L114
  cmp    $0x22,%al
  je     L111
  mov    %al,(%rbx)
L7:
  add    $0x1,%r15
  add    $0x1,%r12d
L58:
  mov    %r13,%rdi
  mov    %r15d,%ebx
  call   <strlen@plt>
  cmp    %ebp,%eax
  cmovg  %ebp,%eax
  cmp    %r15d,%eax
  jle    L96
  movzbl 0x0(%r13,%r15,1),%eax
  cmp    $0xffffffff,%r14d
  jne    L134
  cmp    $0x22,%al
  cmove  %r12d,%r14d
  jmp    L7
  nopl   0x0(%rax)
L41:
  cmp    $0x22,%al
  je     L52
  cmp    $0x5c,%al
  je     L52
L55:
  mov    0x8(%rsp),%rdx
  sub    %r14d,%ebx
  movl   $0x0,0x4(%rsp)
  movslq %ebx,%rbx
  mov    %al,(%rdx,%rbx,1)
  jmp    L7
  nopl   0x0(%rax,%rax,1)
L114:
  movb   $0x5c,(%rbx)
  movl   $0x1,0x4(%rsp)
  jmp    L7
  nopl   (%rax)
L52:
  add    $0x1,%r14d
  jmp    L55
  cs nopw 0x0(%rax,%rax,1)
L96:
  cmp    $0xffffffff,%r14d
  je     L82
L143:
  mov    0x8(%rsp),%rdi
  add    $0x18,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    1050 <strlen@plt>
L111:
  movb   $0x0,(%rbx)
  jmp    L143
L82:
  add    $0x18,%rsp
  mov    $0xffffffff,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
```

assistant: ```c
int extract_string(const char *src, char *dest, int len) {
  int pos = 0;
  int esc = 0;
  int off = -1;
  if (*src == '#')
    return -1;
  for (pos = 0; (pos < strlen(src)) && (pos < len); pos++) {
    if ((off == -1) && (src[pos] == '"')) {
      off = pos + 1;
    } else if (off >= 0) {
      if (esc == 1) {
        switch (src[pos]) {
        case '"':
        case '\\':
          off++;
          break;
        }
        dest[pos - off] = src[pos];
        esc = 0;
      } else if (src[pos] == '\\') {
        dest[pos - off] = src[pos];
        esc = 1;
      } else if (src[pos] != '"') {
        dest[pos - off] = src[pos];
      } else {
        dest[pos - off] = '\0';
        break;
      }
    }
  }
  return (off > -1) ? strlen(dest) : -1;
}
```