ylfeng/ReF-Decompile-dataset huggingface dataset:
user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<main>:
  endbr64
  sub    $0x18,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  lea    0x4(%rsp),%rdi
  call   <pthread_mutexattr_init@plt>
  test   %eax,%eax
  jne    L25
L24:
  mov    0x8(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L12
  add    $0x18,%rsp
  ret
L25:
  lea    0x4(%rsp),%rdi
  mov    $0x78,%esi
  call   <pthread_mutexattr_setprioceiling@plt>
  jmp    L24
L12:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int main(void) {
  int ret;
  pthread_mutexattr_t mutex_attr;
  ret = pthread_mutexattr_init(&mutex_attr);
  if (ret)
    ret = pthread_mutexattr_setprioceiling(&mutex_attr, 120);
  return ret;
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<main>:
  endbr64
  push   %rbp
  sub    $0x10,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  lea    0x4(%rsp),%rbp
  mov    %rbp,%rdi
  call   <pthread_mutexattr_init@plt>
  test   %eax,%eax
  jne    L24
L21:
  mov    0x8(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L23
  add    $0x10,%rsp
  pop    %rbp
  ret
L24:
  mov    $0x78,%esi
  mov    %rbp,%rdi
  call   <pthread_mutexattr_setprioceiling@plt>
  jmp    L21
L23:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int main(void) {
  int ret;
  pthread_mutexattr_t mutex_attr;
  ret = pthread_mutexattr_init(&mutex_attr);
  if (ret)
    ret = pthread_mutexattr_setprioceiling(&mutex_attr, 120);
  return ret;
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<main>:
  endbr64
  push   %rbp
  sub    $0x10,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  lea    0x4(%rsp),%rbp
  mov    %rbp,%rdi
  call   <pthread_mutexattr_init@plt>
  test   %eax,%eax
  jne    L5
L13:
  mov    0x8(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L27
  add    $0x10,%rsp
  pop    %rbp
  ret
L5:
  mov    $0x78,%esi
  mov    %rbp,%rdi
  call   <pthread_mutexattr_setprioceiling@plt>
  jmp    L13
L27:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int main(void) {
  int ret;
  pthread_mutexattr_t mutex_attr;
  ret = pthread_mutexattr_init(&mutex_attr);
  if (ret)
    ret = pthread_mutexattr_setprioceiling(&mutex_attr, 120);
  return ret;
}
```
user: Translate the below assembly code into C programming language:

```asm
<open_or_die>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x18(%rbp)
  mov    %esi,-0x1c(%rbp)
  mov    -0x1c(%rbp),%edx
  mov    -0x18(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <open@plt>
  mov    %eax,-0x4(%rbp)
  cmpl   $0x0,-0x4(%rbp)
  jns    L8
  mov    -0x18(%rbp),%rax
  mov    %rax,%rsi
  lea    D8(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  mov    $0x1,%edi
  call   <exit@plt>
L8:
  mov    -0x4(%rbp),%eax
  leave
  ret
```

tool_calls: name: retrieve_data
arguments: tag: D8
type_guessed: string

tool: D8: Failed to open '%s'; check prerequisites are available


assistant: ```c
int open_or_die(const char *filename, int flags) {
  int fd = open(filename, flags);
  if (fd < 0) {
    printf("Failed to open '%s'; "
           "check prerequisites are available\n",
           filename);
    exit(1);
  }
  return 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
<open_or_die>:
  endbr64
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    %rdi,%rbp
  call   <open@plt>
  mov    %eax,%ebx
  test   %eax,%eax
  js     L6
L0:
  mov    %ebx,%eax
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  ret
L6:
  mov    %rbp,%rsi
  lea    D7(%rip),%rdi
  call   <printf@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L0
```

tool_calls: name: extract_symbolic_data
arguments: label: D7
type_guessed: string

tool: D7: Failed to open '%s'; check prerequisites are available


assistant: ```c
int open_or_die(const char *filename, int flags) {
  int fd = open(filename, flags);
  if (fd < 0) {
    printf("Failed to open '%s'; "
           "check prerequisites are available\n",
           filename);
    exit(1);
  }
  return fd;
}
```
user: Translate the below assembly code into C programming language:

```asm
<open_or_die>:
  endbr64
  push   %r12
  push   %rbp
  mov    %rdi,%rbp
  sub    $0x8,%rsp
  call   <open@plt>
  mov    %eax,%r12d
  test   %eax,%eax
  js     L8
  add    $0x8,%rsp
  mov    %r12d,%eax
  pop    %rbp
  pop    %r12
  ret
  nopl   (%rax)
L8:
  mov    %rbp,%rsi
  lea    D1(%rip),%rdi
  call   <printf@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  add    $0x8,%rsp
  mov    %r12d,%eax
  pop    %rbp
  pop    %r12
  ret
```

tool_calls: name: parse_data
arguments: data_label: D1
type: string

tool: D1: Failed to open '%s'; check prerequisites are available


assistant: ```c
int open_or_die(const char *filename, int flags) {
  int fd = open(filename, flags);
  if (fd < 0) {
    printf("Failed to open '%s'; "
           "check prerequisites are available\n",
           filename);
    exit(1);
  }
  return fd;
}
```
user: 请将以下的汇编代码转换成C语言代码:

```asm
<open_or_die>:
  endbr64
  push   %r12
  push   %rbp
  mov    %rdi,%rbp
  sub    $0x8,%rsp
  call   <open@plt>
  mov    %eax,%r12d
  test   %eax,%eax
  js     L9
  add    $0x8,%rsp
  mov    %r12d,%eax
  pop    %rbp
  pop    %r12
  ret
  nopl   (%rax)
L9:
  mov    %rbp,%rsi
  lea    D2(%rip),%rdi
  call   <printf@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  add    $0x8,%rsp
  mov    %r12d,%eax
  pop    %rbp
  pop    %r12
  ret
```

tool_calls: name: read_data
arguments: tag: D2
type_guessed: string

tool: D2: Failed to open '%s'; check prerequisites are available


assistant: ```c
int open_or_die(const char *filename, int flags) {
  int fd = open(filename, flags);
  if (fd < 0) {
    printf("Failed to open '%s'; "
           "check prerequisites are available\n",
           filename);
    exit(1);
  }
  return fd;
}
```
user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<main>:
  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    -0x30(%rbp),%rax
  mov    0x8(%rax),%rax
  mov    %rax,-0x18(%rbp)
  mov    -0x30(%rbp),%rax
  mov    0x10(%rax),%rax
  mov    %rax,-0x20(%rbp)
  movq   $0x0,-0x10(%rbp)
  mov    -0x18(%rbp),%rdx
  mov    -0x18(%rbp),%rax
  mov    %rax,%rsi
  lea    D4(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  jmp    L38
L36:
  mov    -0x30(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rax
  lea    -0x20(%rbp),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <get_next_sp@plt>
  mov    %rax,-0x10(%rbp)
  mov    -0x10(%rbp),%rdx
  mov    -0x18(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <find_substr_with_gap@plt>
  mov    %rax,-0x18(%rbp)
  mov    -0x10(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  mov    %rax,%rdx
  mov    -0x18(%rbp),%rax
  sub    %rdx,%rax
  mov    %rax,%rsi
  lea    D26(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  cmpq   $0x0,-0x10(%rbp)
  je     L24
  mov    -0x10(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
L24:
  cmpq   $0x0,-0x18(%rbp)
  jne    L38
  lea    D6(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  mov    $0x0,%eax
  jmp    L3
L38:
  mov    -0x20(%rbp),%rax
  movzbl (%rax),%eax
  test   %al,%al
  jne    L36
  lea    D28(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  mov    $0x1,%eax
L3:
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L13
  call   <__stack_chk_fail@plt>
L13:
  leave
  ret
```

tool_calls: name: disassemble_data
arguments: tag: D4
datatype: string
name: disassemble_data
arguments: tag: D26
datatype: string
name: disassemble_data
arguments: tag: D6
datatype: string
name: disassemble_data
arguments: tag: D28
datatype: string

tool: D4: INIT: s=%p:	     |%15s|



tool: D26: found at: s=%p


tool: D6: Not Found

tool: D28: Found

assistant: ```c
int main(int argc, char *argv[]) {
  char *s = argv[1];
  char *p = argv[2];
  char *sp = NULL;
  printf("INIT: s=%p:\t     |%15s|\n\n", s, s);
  while (*p != '\0') {
    sp = get_next_sp(argv[2], &p);
    s = find_substr_with_gap(s, sp);
    printf("found at: s=%p\n", s - strlen(sp));
    if (sp)
      free(sp);
    if (s == NULL) {
      printf("Not Found\n");
      return 0;
    }
  }
  printf("Found\n");
  return 1;
}
```
user: What would the C source look like for the assembly code provided here:

```asm
<main>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x18,%rsp
  mov    %rsi,%r12
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  mov    0x8(%rsi),%rbp
  mov    0x10(%rsi),%rax
  mov    %rax,(%rsp)
  mov    %rbp,%rdx
  mov    %rbp,%rsi
  lea    D32(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    D0(%rip),%r13
  jmp    L20
L59:
  test   %rbp,%rbp
  je     L29
L20:
  mov    (%rsp),%rax
  cmpb   $0x0,(%rax)
  je     L27
  mov    %rsp,%rsi
  mov    0x10(%r12),%rdi
  call   <get_next_sp@plt>
  mov    %rax,%rbx
  mov    %rax,%rsi
  mov    %rbp,%rdi
  call   <find_substr_with_gap@plt>
  mov    %rax,%rbp
  mov    %rbx,%rdi
  call   <strlen@plt>
  mov    %rbp,%rsi
  sub    %rax,%rsi
  mov    %r13,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  test   %rbx,%rbx
  je     L59
  mov    %rbx,%rdi
  call   <free@plt>
  jmp    L59
L29:
  lea    D17(%rip),%rdi
  call   <puts@plt>
  mov    $0x0,%eax
  jmp    L34
L27:
  lea    D15(%rip),%rdi
  call   <puts@plt>
  mov    $0x1,%eax
L34:
  mov    0x8(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L62
  add    $0x18,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L62:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: parse_data
arguments: data_label: D32
type_infered: string
name: parse_data
arguments: data_label: D0
type_infered: string
name: parse_data
arguments: data_label: D17
type_infered: string
name: parse_data
arguments: data_label: D15
type_infered: string

tool: D32: INIT: s=%p:	     |%15s|



tool: D0: found at: s=%p


tool: D17: Not Found

tool: D15: Found

assistant: ```c
int main(int argc, char *argv[]) {
  char *s = argv[1];
  char *p = argv[2];
  char *sp = NULL;
  printf("INIT: s=%p:\t     |%15s|\n\n", s, s);
  while (*p != '\0') {
    sp = get_next_sp(argv[2], &p);
    s = find_substr_with_gap(s, sp);
    printf("found at: s=%p\n", s - strlen(sp));
    if (sp)
      free(sp);
    if (s == NULL) {
      printf("Not Found\n");
      return 0;
    }
  }
  printf("Found\n");
  return 1;
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<main>:
  endbr64
  push   %r13
  lea    D13(%rip),%rdi
  lea    D6(%rip),%r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rsi,%rbx
  sub    $0x18,%rsp
  mov    0x8(%rsi),%r12
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  mov    0x10(%rsi),%rax
  mov    %r12,%rdx
  mov    %r12,%rsi
  mov    %rax,(%rsp)
  xor    %eax,%eax
  call   <printf@plt>
  jmp    L55
  nopw   0x0(%rax,%rax,1)
L4:
  mov    0x10(%rbx),%rdi
  mov    %rsp,%rsi
  call   <get_next_sp@plt>
  mov    %r12,%rdi
  mov    %rax,%rsi
  mov    %rax,%rbp
  call   <find_substr_with_gap@plt>
  mov    %rbp,%rdi
  mov    %rax,%r12
  call   <strlen@plt>
  mov    %r12,%rsi
  mov    %r13,%rdi
  sub    %rax,%rsi
  xor    %eax,%eax
  call   <printf@plt>
  test   %rbp,%rbp
  je     L44
  mov    %rbp,%rdi
  call   <free@plt>
L44:
  test   %r12,%r12
  je     L41
L55:
  mov    (%rsp),%rax
  cmpb   $0x0,(%rax)
  jne    L4
  lea    D19(%rip),%rdi
  call   <puts@plt>
  mov    $0x1,%eax
L56:
  mov    0x8(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L34
  add    $0x18,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L41:
  lea    D8(%rip),%rdi
  call   <puts@plt>
  xor    %eax,%eax
  jmp    L56
L34:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: unpack_data
arguments: data_tag: D13
type_guessed: string
name: unpack_data
arguments: data_tag: D6
type_guessed: string
name: unpack_data
arguments: data_tag: D19
type_guessed: string
name: unpack_data
arguments: data_tag: D8
type_guessed: string

tool: D13: INIT: s=%p:	     |%15s|



tool: D6: found at: s=%p


tool: D19: Found

tool: D8: Not Found

assistant: ```c
int main(int argc, char *argv[]) {
  char *s = argv[1];
  char *p = argv[2];
  char *sp = NULL;
  printf("INIT: s=%p:\t     |%15s|\n\n", s, s);
  while (*p != '\0') {
    sp = get_next_sp(argv[2], &p);
    s = find_substr_with_gap(s, sp);
    printf("found at: s=%p\n", s - strlen(sp));
    if (sp)
      free(sp);
    if (s == NULL) {
      printf("Not Found\n");
      return 0;
    }
  }
  printf("Found\n");
  return 1;
}
```
user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<main>:
  endbr64
  push   %r13
  lea    D34(%rip),%rdi
  lea    D19(%rip),%r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rsi,%rbx
  sub    $0x18,%rsp
  mov    0x8(%rsi),%r12
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  mov    0x10(%rsi),%rax
  mov    %r12,%rdx
  mov    %r12,%rsi
  mov    %rax,(%rsp)
  xor    %eax,%eax
  call   <printf@plt>
  jmp    L55
  nopw   0x0(%rax,%rax,1)
L27:
  mov    0x10(%rbx),%rdi
  mov    %rsp,%rsi
  call   <get_next_sp@plt>
  mov    %r12,%rdi
  mov    %rax,%rsi
  mov    %rax,%rbp
  call   <find_substr_with_gap@plt>
  mov    %rbp,%rdi
  mov    %rax,%r12
  call   <strlen@plt>
  mov    %r12,%rsi
  mov    %r13,%rdi
  sub    %rax,%rsi
  xor    %eax,%eax
  call   <printf@plt>
  test   %rbp,%rbp
  je     L35
  mov    %rbp,%rdi
  call   <free@plt>
L35:
  test   %r12,%r12
  je     L37
L55:
  mov    (%rsp),%rax
  cmpb   $0x0,(%rax)
  jne    L27
  lea    D18(%rip),%rdi
  call   <puts@plt>
  mov    $0x1,%eax
L18:
  mov    0x8(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L19
  add    $0x18,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L37:
  lea    D37(%rip),%rdi
  call   <puts@plt>
  xor    %eax,%eax
  jmp    L18
L19:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: extract_symbolic_data
arguments: data_tag: D34
datatype: string
name: extract_symbolic_data
arguments: data_tag: D19
datatype: string
name: extract_symbolic_data
arguments: data_tag: D18
datatype: string
name: extract_symbolic_data
arguments: data_tag: D37
datatype: string

tool: D34: INIT: s=%p:	     |%15s|



tool: D19: found at: s=%p


tool: D18: Found

tool: D37: Not Found

assistant: ```c
int main(int argc, char *argv[]) {
  char *s = argv[1];
  char *p = argv[2];
  char *sp = NULL;
  printf("INIT: s=%p:\t     |%15s|\n\n", s, s);
  while (*p != '\0') {
    sp = get_next_sp(argv[2], &p);
    s = find_substr_with_gap(s, sp);
    printf("found at: s=%p\n", s - strlen(sp));
    if (sp)
      free(sp);
    if (s == NULL) {
      printf("Not Found\n");
      return 0;
    }
  }
  printf("Found\n");
  return 1;
}
```
user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<hashCstrhash>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x18(%rbp)
  mov    -0x18(%rbp),%rax
  mov    %rax,-0x8(%rbp)
  mov    -0x8(%rbp),%rax
  mov    %rax,%rdi
  call   <djb2@plt>
  leave
  ret
```

assistant: ```c
unsigned int hashCstrhash(const void *const x) {
  const char *const s = x;
  return (unsigned int)djb2((const unsigned char *)s);
}
```
user: Translate the below assembly code into C programming language:

```asm
<hashCstrhash>:
  endbr64
  sub    $0x8,%rsp
  call   <djb2@plt>
  add    $0x8,%rsp
  ret
```

assistant: ```c
unsigned int hashCstrhash(const void *const x) {
  const char *const s = x;
  return (unsigned int)djb2((const unsigned char *)s);
}
```
user: 请从给定的汇编指令推导出C源代码：

```asm
<hashCstrhash>:
  endbr64
  sub    $0x8,%rsp
  call   <djb2@plt>
  add    $0x8,%rsp
  ret
```

assistant: ```c
unsigned int hashCstrhash(const void *const x) {
  const char *const s = x;
  return (unsigned int)djb2((const unsigned char *)s);
}
```
user: 请从给定的汇编指令推导出C源代码:

```asm
<hashCstrhash>:
  endbr64
  sub    $0x8,%rsp
  call   <djb2@plt>
  add    $0x8,%rsp
  ret
```

assistant: ```c
unsigned int hashCstrhash(const void *const x) {
  const char *const s = x;
  return (unsigned int)djb2((const unsigned char *)s);
}
```
user: 这段汇编代码用C语言表示是什么样的？

```asm
<ll_strncopy>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %rdi,-0x18(%rbp)
  mov    %rsi,-0x20(%rbp)
  mov    %rdx,-0x28(%rbp)
  mov    -0x20(%rbp),%rax
  mov    %rax,%rdi
  call   <ll_strlen@plt>
  mov    %rax,-0x10(%rbp)
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <ll_strlen@plt>
  mov    %rax,-0x8(%rbp)
  mov    -0x28(%rbp),%rax
  cmp    -0x8(%rbp),%rax
  jl     L18
  mov    -0x18(%rbp),%rax
  jmp    L13
L18:
  mov    -0x8(%rbp),%rax
  sub    -0x28(%rbp),%rax
  mov    %rax,%rdx
  mov    -0x28(%rbp),%rcx
  mov    -0x18(%rbp),%rax
  add    %rax,%rcx
  mov    -0x20(%rbp),%rax
  mov    %rax,%rsi
  mov    %rcx,%rdi
  call   <strncpy@plt>
L13:
  leave
  ret
```

assistant: ```c
int8_t *ll_strncopy(int8_t *dst, int8_t *src, int64_t i) {
  int64_t src_size = ll_strlen(src);
  int64_t dst_size = ll_strlen(dst);
  if (i >= dst_size)
    return dst;
  else
    return (int8_t *)strncpy((char *)dst + i, (char *)src, dst_size - i);
}
```
user: What is the c source code of the assembly code below?

```asm
<ll_strncopy>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%rbx
  mov    %rsi,%r12
  mov    %rdx,%rbp
  mov    %rsi,%rdi
  call   <ll_strlen@plt>
  mov    %rbx,%rdi
  call   <ll_strlen@plt>
  cmp    %rbp,%rax
  jg     L4
L16:
  mov    %rbx,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
L4:
  sub    %rbp,%rax
  mov    %rax,%rdx
  lea    (%rbx,%rbp,1),%rdi
  mov    %r12,%rsi
  call   <strncpy@plt>
  mov    %rax,%rbx
  jmp    L16
```

assistant: ```c
int8_t *ll_strncopy(int8_t *dst, int8_t *src, int64_t i) {
  int64_t src_size = ll_strlen(src);
  int64_t dst_size = ll_strlen(dst);
  if (i >= dst_size)
    return dst;
  else
    return (int8_t *)strncpy((char *)dst + i, (char *)src, dst_size - i);
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<ll_strncopy>:
  endbr64
  push   %r12
  mov    %rdi,%r12
  mov    %rsi,%rdi
  push   %rbp
  mov    %rsi,%rbp
  push   %rbx
  mov    %rdx,%rbx
  call   <ll_strlen@plt>
  mov    %r12,%rdi
  call   <ll_strlen@plt>
  cmp    %rbx,%rax
  jg     L0
  mov    %r12,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
  xchg   %ax,%ax
L0:
  sub    %rbx,%rax
  lea    (%r12,%rbx,1),%rdi
  mov    %rbp,%rsi
  pop    %rbx
  mov    %rax,%rdx
  pop    %rbp
  pop    %r12
  jmp    1060 <strncpy@plt>
```

assistant: ```c
int8_t *ll_strncopy(int8_t *dst, int8_t *src, int64_t i) {
  int64_t src_size = ll_strlen(src);
  int64_t dst_size = ll_strlen(dst);
  if (i >= dst_size)
    return dst;
  else
    return (int8_t *)strncpy((char *)dst + i, (char *)src, dst_size - i);
}
```
user: 这段汇编代码用C语言表示是什么样的？

```asm
<ll_strncopy>:
  endbr64
  push   %r12
  mov    %rdi,%r12
  mov    %rsi,%rdi
  push   %rbp
  mov    %rsi,%rbp
  push   %rbx
  mov    %rdx,%rbx
  call   <ll_strlen@plt>
  mov    %r12,%rdi
  call   <ll_strlen@plt>
  cmp    %rbx,%rax
  jg     L1
  mov    %r12,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
  xchg   %ax,%ax
L1:
  sub    %rbx,%rax
  lea    (%r12,%rbx,1),%rdi
  mov    %rbp,%rsi
  pop    %rbx
  mov    %rax,%rdx
  pop    %rbp
  pop    %r12
  jmp    1060 <strncpy@plt>
```

assistant: ```c
int8_t *ll_strncopy(int8_t *dst, int8_t *src, int64_t i) {
  int64_t src_size = ll_strlen(src);
  int64_t dst_size = ll_strlen(dst);
  if (i >= dst_size)
    return dst;
  else
    return (int8_t *)strncpy((char *)dst + i, (char *)src, dst_size - i);
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<dmat_init_1x2>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x18(%rbp)
  mov    %rsi,-0x20(%rbp)
  movsd  %xmm0,-0x28(%rbp)
  mov    %edx,-0x2c(%rbp)
  movl   $0x0,-0x8(%rbp)
  jmp    L18
L33:
  movl   $0x0,-0x4(%rbp)
  jmp    L5
L16:
  mov    -0x8(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rdx
  mov    -0x4(%rbp),%eax
  cltq
  shl    $0x3,%rax
  add    %rdx,%rax
  pxor   %xmm0,%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x8(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x20(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rdx
  mov    -0x4(%rbp),%eax
  cltq
  shl    $0x3,%rax
  add    %rdx,%rax
  pxor   %xmm0,%xmm0
  movsd  %xmm0,(%rax)
  addl   $0x1,-0x4(%rbp)
L5:
  mov    -0x4(%rbp),%eax
  cmp    -0x2c(%rbp),%eax
  jl     L16
  mov    -0x8(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rdx
  mov    -0x8(%rbp),%eax
  cltq
  shl    $0x3,%rax
  add    %rdx,%rax
  movsd  -0x28(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  addl   $0x1,-0x8(%rbp)
L18:
  mov    -0x8(%rbp),%eax
  cmp    -0x2c(%rbp),%eax
  jl     L33
  nop
  nop
  pop    %rbp
  ret
```

assistant: ```c
void dmat_init_1x2(double **a11, double **a12, double alpha, int n) {
  int i;
  int j;
  for (i = 0; i < n; ++i) {
    for (j = 0; j < n; ++j) {
      a11[i][j] = 0.;
      a12[i][j] = 0.;
    }
    a11[i][i] = alpha;
  }
}
```
user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<dmat_init_1x2>:
  endbr64
  test   %edx,%edx
  jle    L27
  mov    %edx,%edx
  lea    0x0(,%rdx,8),%rcx
  mov    $0x0,%r8d
L0:
  mov    $0x0,%eax
  mov    %rdi,%r9
L23:
  mov    (%rdi),%rdx
  movq   $0x0,(%rdx,%rax,1)
  mov    (%rsi),%rdx
  movq   $0x0,(%rdx,%rax,1)
  add    $0x8,%rax
  cmp    %rcx,%rax
  jne    L23
  mov    (%r9),%rax
  movsd  %xmm0,(%rax,%r8,1)
  add    $0x8,%rdi
  add    $0x8,%r8
  add    $0x8,%rsi
  cmp    %rcx,%r8
  jne    L0
L27:
  ret
```

assistant: ```c
void dmat_init_1x2(double **a11, double **a12, double alpha, int n) {
  int i;
  int j;
  for (i = 0; i < n; ++i) {
    for (j = 0; j < n; ++j) {
      a11[i][j] = 0.;
      a12[i][j] = 0.;
    }
    a11[i][i] = alpha;
  }
}
```
user: 请从给定的汇编指令推导出C源代码：

```asm
<dmat_init_1x2>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x18,%rsp
  movsd  %xmm0,(%rsp)
  test   %edx,%edx
  jle    L46
  movslq %edx,%rax
  mov    %rdi,%r13
  mov    %rsi,%r14
  xor    %ebx,%ebx
  mov    %rax,0x8(%rsp)
  lea    0x0(,%rax,8),%r15
  nopl   0x0(%rax,%rax,1)
L39:
  mov    (%r14,%rbx,1),%r12
  mov    0x0(%r13,%rbx,1),%rbp
  lea    (%r12,%r15,1),%rax
  cmp    %rax,%rbp
  jae    L22
  lea    0x0(%rbp,%r15,1),%rax
  cmp    %rax,%r12
  jb     L12
L22:
  mov    %r15,%rdx
  xor    %esi,%esi
  mov    %rbp,%rdi
  call   <memset@plt>
  mov    %r15,%rdx
  xor    %esi,%esi
  mov    %r12,%rdi
  call   <memset@plt>
L57:
  movsd  (%rsp),%xmm1
  movsd  %xmm1,0x0(%rbp,%rbx,1)
  add    $0x8,%rbx
  cmp    %r15,%rbx
  jne    L39
L46:
  add    $0x18,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   0x0(%rax)
L12:
  xor    %eax,%eax
  nopw   0x0(%rax,%rax,1)
L40:
  movq   $0x0,0x0(%rbp,%rax,8)
  movq   $0x0,(%r12,%rax,8)
  add    $0x1,%rax
  cmp    0x8(%rsp),%rax
  jne    L40
  jmp    L57
```

assistant: ```c
void dmat_init_1x2(double **a11, double **a12, double alpha, int n) {
  int i;
  int j;
  for (i = 0; i < n; ++i) {
    for (j = 0; j < n; ++j) {
      a11[i][j] = 0.;
      a12[i][j] = 0.;
    }
    a11[i][i] = alpha;
  }
}
```