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
<backup_dir>:
  endbr64
  mov    (%rsi),%ecx
  xor    %r8d,%r8d
  test   %ecx,%ecx
  jle    L9
  mov    %ecx,%eax
  sub    $0x1,%eax
  je     L4
  cltq
  jmp    L109
  nopl   0x0(%rax,%rax,1)
L105:
  sub    $0x1,%rax
  je     L68
L109:
  cmpb   $0x2f,-0x1(%rdi,%rax,1)
  mov    %eax,%edx
  jne    L105
  lea    (%rdi,%rax,1),%r8
  cmpb   $0x2e,(%r8)
  je     L62
L14:
  sub    $0x1,%edx
L46:
  mov    %edx,(%rsi)
  mov    $0x1,%r8d
L9:
  mov    %r8d,%eax
  ret
  nopl   0x0(%rax,%rax,1)
L68:
  mov    %rdi,%r8
  xor    %edx,%edx
  cmpb   $0x2e,(%r8)
  jne    L14
L62:
  lea    -0x2(%rcx),%r8d
  cmp    %edx,%r8d
  jne    L14
  xor    %r8d,%r8d
  cmpb   $0x2e,0x1(%rdi,%rax,1)
  lea    -0x3(%rcx),%edx
  jne    L46
  jmp    L9
L4:
  mov    $0xffffffff,%edx
  jmp    L46
```

assistant: ```c
int backup_dir(const char *z, int *pJ) {
  int j = *pJ;
  int i;
  if (j <= 0)
    return 0;
  for (i = j - 1; i > 0 && z[i - 1] != '/'; i--) {
  }
  if (z[i] == '.' && i == j - 2 && z[i + 1] == '.')
    return 0;
  *pJ = i - 1;
  return 1;
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<backup_dir>:
  endbr64
  mov    (%rsi),%ecx
  xor    %r8d,%r8d
  test   %ecx,%ecx
  jle    L27
  mov    %ecx,%eax
  sub    $0x1,%eax
  je     L43
  cltq
  jmp    L64
  nopl   0x0(%rax,%rax,1)
L45:
  sub    $0x1,%rax
  je     L69
L64:
  cmpb   $0x2f,-0x1(%rdi,%rax,1)
  mov    %eax,%edx
  jne    L45
  lea    (%rdi,%rax,1),%r8
  cmpb   $0x2e,(%r8)
  je     L5
L86:
  sub    $0x1,%edx
L17:
  mov    %edx,(%rsi)
  mov    $0x1,%r8d
L27:
  mov    %r8d,%eax
  ret
  nopl   0x0(%rax,%rax,1)
L69:
  mov    %rdi,%r8
  xor    %edx,%edx
  cmpb   $0x2e,(%r8)
  jne    L86
L5:
  lea    -0x2(%rcx),%r8d
  cmp    %edx,%r8d
  jne    L86
  xor    %r8d,%r8d
  cmpb   $0x2e,0x1(%rdi,%rax,1)
  lea    -0x3(%rcx),%edx
  jne    L17
  jmp    L27
L43:
  mov    $0xffffffff,%edx
  jmp    L17
```

assistant: ```c
int backup_dir(const char *z, int *pJ) {
  int j = *pJ;
  int i;
  if (j <= 0)
    return 0;
  for (i = j - 1; i > 0 && z[i - 1] != '/'; i--) {
  }
  if (z[i] == '.' && i == j - 2 && z[i + 1] == '.')
    return 0;
  *pJ = i - 1;
  return 1;
}
```
user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<count_leading_whitespace>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x18(%rbp)
  movl   $0x0,-0xc(%rbp)
  movl   $0x0,-0x8(%rbp)
  cmpq   $0x0,-0x18(%rbp)
  je     L18
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  mov    %eax,-0x4(%rbp)
  jmp    L19
L25:
  addl   $0x1,-0x8(%rbp)
L19:
  mov    -0xc(%rbp),%eax
  cmp    -0x4(%rbp),%eax
  jge    L18
  mov    -0xc(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    %edx,-0xc(%rbp)
  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    L25
L18:
  mov    -0x8(%rbp),%eax
  leave
  ret
```

assistant: ```c
int count_leading_whitespace(const char *str) {
  int len, idx = 0, num = 0;
  if (str != NULL) {
    len = strlen(str);
    while ((idx < len) && isspace(str[idx++])) {
      num++;
    }
  }
  return num;
}
```
user: What is the c source code of the assembly code below:

```asm
<count_leading_whitespace>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    $0x0,%r12d
  test   %rdi,%rdi
  je     L31
  mov    %rdi,%rbp
  call   <strlen@plt>
  mov    %eax,%r13d
  test   %eax,%eax
  jle    L0
  mov    $0x0,%ebx
L34:
  mov    %ebx,%r12d
  add    $0x1,%ebx
  movsbl 0x0(%rbp),%edi
  call   <isspace@plt>
  test   %rax,%rax
  je     L31
  add    $0x1,%rbp
  cmp    %ebx,%r13d
  jne    L34
  mov    %ebx,%r12d
L31:
  mov    %r12d,%eax
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L0:
  mov    $0x0,%r12d
  jmp    L31
```

assistant: ```c
int count_leading_whitespace(const char *str) {
  int len, idx = 0, num = 0;
  if (str != NULL) {
    len = strlen(str);
    while ((idx < len) && isspace(str[idx++])) {
      num++;
    }
  }
  return num;
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<count_leading_whitespace>:
  endbr64
  push   %r13
  push   %r12
  xor    %r12d,%r12d
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  test   %rdi,%rdi
  je     L6
  mov    %rdi,%rbp
  xor    %ebx,%ebx
  call   <strlen@plt>
  mov    %eax,%r13d
  jmp    L0
  nopl   (%rax)
L30:
  movsbl 0x0(%rbp,%rbx,1),%edi
  add    $0x1,%rbx
  call   <isspace@plt>
  test   %rax,%rax
  je     L6
L0:
  mov    %ebx,%r12d
  cmp    %ebx,%r13d
  jg     L30
L6:
  add    $0x8,%rsp
  mov    %r12d,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
```

assistant: ```c
int count_leading_whitespace(const char *str) {
  int len, idx = 0, num = 0;
  if (str != NULL) {
    len = strlen(str);
    while ((idx < len) && isspace(str[idx++])) {
      num++;
    }
  }
  return num;
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<count_leading_whitespace>:
  endbr64
  push   %r13
  push   %r12
  xor    %r12d,%r12d
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  test   %rdi,%rdi
  je     L14
  mov    %rdi,%rbp
  xor    %ebx,%ebx
  call   <strlen@plt>
  mov    %eax,%r13d
  jmp    L29
  nopl   (%rax)
L32:
  movsbl 0x0(%rbp,%rbx,1),%edi
  add    $0x1,%rbx
  call   <isspace@plt>
  test   %rax,%rax
  je     L14
L29:
  mov    %ebx,%r12d
  cmp    %ebx,%r13d
  jg     L32
L14:
  add    $0x8,%rsp
  mov    %r12d,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
```

assistant: ```c
int count_leading_whitespace(const char *str) {
  int len, idx = 0, num = 0;
  if (str != NULL) {
    len = strlen(str);
    while ((idx < len) && isspace(str[idx++])) {
      num++;
    }
  }
  return num;
}
```
user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<show_version>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  lea    D1(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  mov    $0x0,%edi
  call   <exit@plt>
  nop
  pop    %rbp
  ret
```

tool_calls: name: retrieve_data
arguments: data_label: D1
data_type: string

tool: D1: polld version unknown
Copyright (C) 2004-2006 Michal Cihar <michal@cihar.com>
This is free software.  You may redistribute copies of it under the terms of
the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.
There is NO WARRANTY, to the extent permitted by law.


assistant: ```c
void show_version(void) {
  printf("polld version "
         "unknown"
         "\n"
         "Copyright (C) 2004-2006 Michal Cihar <michal@cihar.com>\n"
         "This is free software.  You may redistribute copies of it under the terms of\n"
         "the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.\n"
         "There is NO WARRANTY, to the extent permitted by law.\n");
  exit(0);
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<show_version>:
  endbr64
  sub    $0x8,%rsp
  lea    D2(%rip),%rdi
  call   <printf@plt>
  mov    $0x0,%edi
  call   <exit@plt>
  add    $0x8,%rsp
  ret
```

tool_calls: name: read_data
arguments: data_label: D2
type_infered: string

tool: D2: polld version unknown
Copyright (C) 2004-2006 Michal Cihar <michal@cihar.com>
This is free software.  You may redistribute copies of it under the terms of
the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.
There is NO WARRANTY, to the extent permitted by law.


assistant: ```c
void show_version(void) {
  printf("polld version "
         "unknown"
         "\n"
         "Copyright (C) 2004-2006 Michal Cihar <michal@cihar.com>\n"
         "This is free software.  You may redistribute copies of it under the terms of\n"
         "the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.\n"
         "There is NO WARRANTY, to the extent permitted by law.\n");
  exit(0);
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<show_version>:
  endbr64
  sub    $0x8,%rsp
  lea    D2(%rip),%rdi
  call   <printf@plt>
  xor    %edi,%edi
  add    $0x8,%rsp
  jmp    1070 <exit@plt>
```

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

tool: D2: polld version unknown
Copyright (C) 2004-2006 Michal Cihar <michal@cihar.com>
This is free software.  You may redistribute copies of it under the terms of
the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.
There is NO WARRANTY, to the extent permitted by law.


assistant: ```c
void show_version(void) {
  printf("polld version "
         "unknown"
         "\n"
         "Copyright (C) 2004-2006 Michal Cihar <michal@cihar.com>\n"
         "This is free software.  You may redistribute copies of it under the terms of\n"
         "the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.\n"
         "There is NO WARRANTY, to the extent permitted by law.\n");
  exit(0);
}
```
user: 这段汇编代码用C语言表示是什么样的:

```asm
<show_version>:
  endbr64
  sub    $0x8,%rsp
  lea    D7(%rip),%rdi
  call   <printf@plt>
  xor    %edi,%edi
  add    $0x8,%rsp
  jmp    1070 <exit@plt>
```

tool_calls: name: unpack_data
arguments: data_tag: D7
type: string

tool: D7: polld version unknown
Copyright (C) 2004-2006 Michal Cihar <michal@cihar.com>
This is free software.  You may redistribute copies of it under the terms of
the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.
There is NO WARRANTY, to the extent permitted by law.


assistant: ```c
void show_version(void) {
  printf("polld version "
         "unknown"
         "\n"
         "Copyright (C) 2004-2006 Michal Cihar <michal@cihar.com>\n"
         "This is free software.  You may redistribute copies of it under the terms of\n"
         "the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.\n"
         "There is NO WARRANTY, to the extent permitted by law.\n");
  exit(0);
}
```
user: 请从给定的汇编指令推导出C源代码:

```asm
<blunt>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x18(%rbp)
  mov    -0x18(%rbp),%rax
  mov    (%rax),%eax
  mov    %eax,-0x4(%rbp)
  cmpl   $0x0,-0x4(%rbp)
  je     L2
  mov    -0x18(%rbp),%rax
  mov    (%rax),%eax
  lea    -0x1(%rax),%edx
  mov    -0x18(%rbp),%rax
  mov    %edx,(%rax)
L2:
  mov    -0x4(%rbp),%eax
  pop    %rbp
  ret
```

assistant: ```c
int blunt(int *s) {
  int temp = *s;
  if (temp)
    --*s;
  return temp;
}
```
user: What would the C source look like for the assembly code provided here?

```asm
<blunt>:
  endbr64
  mov    (%rdi),%eax
  test   %eax,%eax
  je     L1
  lea    -0x1(%rax),%edx
  mov    %edx,(%rdi)
L1:
  ret
```

assistant: ```c
int blunt(int *s) {
  int temp = *s;
  if (temp)
    --*s;
  return temp;
}
```
user: What would the C source look like for the assembly code provided here:

```asm
<blunt>:
  endbr64
  mov    (%rdi),%eax
  test   %eax,%eax
  je     L4
  lea    -0x1(%rax),%edx
  mov    %edx,(%rdi)
L4:
  ret
```

assistant: ```c
int blunt(int *s) {
  int temp = *s;
  if (temp)
    --*s;
  return temp;
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<blunt>:
  endbr64
  mov    (%rdi),%eax
  test   %eax,%eax
  je     L8
  lea    -0x1(%rax),%edx
  mov    %edx,(%rdi)
L8:
  ret
```

assistant: ```c
int blunt(int *s) {
  int temp = *s;
  if (temp)
    --*s;
  return temp;
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<crc32_body>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %edi,-0x24(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    %rdx,-0x38(%rbp)
  mov    %rcx,-0x40(%rbp)
  mov    -0x30(%rbp),%rax
  and    $0x3,%eax
  test   %rax,%rax
  je     L61
  cmpq   $0x0,-0x38(%rbp)
  je     L61
L50:
  mov    -0x30(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    %rdx,-0x30(%rbp)
  movzbl (%rax),%eax
  movzbl %al,%eax
  xor    -0x24(%rbp),%eax
  movzbl %al,%edx
  mov    -0x40(%rbp),%rax
  movslq %edx,%rdx
  mov    (%rax,%rdx,4),%edx
  mov    -0x24(%rbp),%eax
  sar    $0x8,%eax
  xor    %edx,%eax
  mov    %eax,-0x24(%rbp)
  subq   $0x1,-0x38(%rbp)
  cmpq   $0x0,-0x38(%rbp)
  je     L61
  mov    -0x30(%rbp),%rax
  and    $0x3,%eax
  test   %rax,%rax
  jne    L50
L61:
  mov    -0x38(%rbp),%rax
  and    $0x3,%eax
  mov    %rax,-0x8(%rbp)
  shrq   $0x2,-0x38(%rbp)
  mov    -0x30(%rbp),%rax
  mov    %rax,-0x18(%rbp)
  subq   $0x4,-0x18(%rbp)
  jmp    L43
L40:
  addq   $0x4,-0x18(%rbp)
  mov    -0x18(%rbp),%rax
  mov    (%rax),%eax
  xor    %eax,-0x24(%rbp)
  mov    -0x40(%rbp),%rax
  lea    0xc00(%rax),%rdx
  mov    -0x24(%rbp),%eax
  movzbl %al,%eax
  cltq
  mov    (%rdx,%rax,4),%ecx
  mov    -0x40(%rbp),%rax
  lea    0x800(%rax),%rdx
  mov    -0x24(%rbp),%eax
  sar    $0x8,%eax
  movzbl %al,%eax
  cltq
  mov    (%rdx,%rax,4),%eax
  xor    %eax,%ecx
  mov    -0x40(%rbp),%rax
  lea    0x400(%rax),%rdx
  mov    -0x24(%rbp),%eax
  sar    $0x10,%eax
  movzbl %al,%eax
  cltq
  mov    (%rdx,%rax,4),%eax
  xor    %eax,%ecx
  mov    -0x24(%rbp),%eax
  shr    $0x18,%eax
  mov    %eax,%edx
  mov    -0x40(%rbp),%rax
  movslq %edx,%rdx
  mov    (%rax,%rdx,4),%eax
  xor    %ecx,%eax
  mov    %eax,-0x24(%rbp)
  subq   $0x1,-0x38(%rbp)
L43:
  cmpq   $0x0,-0x38(%rbp)
  jne    L40
  mov    -0x8(%rbp),%rax
  mov    %rax,-0x38(%rbp)
  cmpq   $0x0,-0x38(%rbp)
  je     L70
  mov    -0x18(%rbp),%rax
  mov    %rax,-0x10(%rbp)
L52:
  addq   $0x4,-0x10(%rbp)
  mov    -0x10(%rbp),%rax
  mov    (%rax),%eax
  xor    -0x24(%rbp),%eax
  movzbl %al,%edx
  mov    -0x40(%rbp),%rax
  movslq %edx,%rdx
  mov    (%rax,%rdx,4),%edx
  mov    -0x24(%rbp),%eax
  sar    $0x8,%eax
  xor    %edx,%eax
  mov    %eax,-0x24(%rbp)
  subq   $0x1,-0x38(%rbp)
  cmpq   $0x0,-0x38(%rbp)
  jne    L52
L70:
  mov    -0x24(%rbp),%eax
  pop    %rbp
  ret
```

assistant: ```c
uint32_t crc32_body(uint32_t crc, unsigned char const *buf, size_t len, const uint32_t (*tab)[256]) {
  const uint32_t *b;
  size_t rem_len;
  if ((long)buf & 3 && len) {
    do {
      crc = tab[0][(crc ^ (*buf++)) & 255] ^ (crc >> 8);
    } while ((--len) && ((long)buf) & 3);
  }
  rem_len = len & 3;
  len = len >> 2;
  b = (const uint32_t *)buf;
  for (--b; len; --len) {
    crc ^= *++b;
    crc = tab[3][(crc)&255] ^ tab[2][(crc >> 8) & 255] ^ tab[1][(crc >> 16) & 255] ^ tab[0][(crc >> 24) & 255];
  }
  len = rem_len;
  if (len) {
    uint8_t *p = (uint8_t *)(b + 1) - 1;
    do {
      crc = tab[0][(crc ^ (*++p)) & 255] ^ (crc >> 8);
    } while (--len);
  }
  return crc;
}
```
user: 请将这段汇编代码片段转换成等效的C代码:

```asm
<crc32_body>:
  endbr64
  mov    %edi,%eax
  test   $0x3,%sil
  je     L94
  test   %rdx,%rdx
  jne    L93
L94:
  mov    %rdx,%r11
  and    $0x3,%r11d
  lea    -0x4(%rsi),%r8
  shr    $0x2,%rdx
  je     L34
  lea    0x0(,%rdx,4),%r9
  lea    -0x4(%rsi,%r9,1),%r10
  mov    %r8,%rsi
L31:
  add    $0x4,%rsi
  xor    (%rsi),%eax
  movzbl %ah,%edx
  movslq %edx,%rdx
  mov    %eax,%edi
  sar    $0x10,%edi
  movzbl %dil,%edi
  mov    0x800(%rcx,%rdx,4),%edx
  xor    0x400(%rcx,%rdi,4),%edx
  movzbl %al,%edi
  xor    0xc00(%rcx,%rdi,4),%edx
  shr    $0x18,%eax
  cltq
  xor    (%rcx,%rax,4),%edx
  mov    %edx,%eax
  cmp    %r10,%rsi
  jne    L31
  add    %r9,%r8
L34:
  mov    %eax,%edx
  test   %r11,%r11
  je     L37
  lea    (%r8,%r11,4),%rsi
L82:
  add    $0x4,%r8
  mov    %edx,%eax
  xor    (%r8),%eax
  movzbl %al,%eax
  sar    $0x8,%edx
  xor    (%rcx,%rax,4),%edx
  cmp    %rsi,%r8
  jne    L82
L37:
  mov    %edx,%eax
  ret
L93:
  add    $0x1,%rsi
  mov    %eax,%edi
  xor    -0x1(%rsi),%dil
  movzbl %dil,%edi
  sar    $0x8,%eax
  xor    (%rcx,%rdi,4),%eax
  sub    $0x1,%rdx
  je     L11
  test   $0x3,%sil
  jne    L93
  jmp    L94
L11:
  mov    %eax,%edx
  jmp    L37
```

assistant: ```c
uint32_t crc32_body(uint32_t crc, unsigned char const *buf, size_t len, const uint32_t (*tab)[256]) {
  const uint32_t *b;
  size_t rem_len;
  if ((long)buf & 3 && len) {
    do {
      crc = tab[0][(crc ^ (*buf++)) & 255] ^ (crc >> 8);
    } while ((--len) && ((long)buf) & 3);
  }
  rem_len = len & 3;
  len = len >> 2;
  b = (const uint32_t *)buf;
  for (--b; len; --len) {
    crc ^= *++b;
    crc = tab[3][(crc)&255] ^ tab[2][(crc >> 8) & 255] ^ tab[1][(crc >> 16) & 255] ^ tab[0][(crc >> 24) & 255];
  }
  len = rem_len;
  if (len) {
    uint8_t *p = (uint8_t *)(b + 1) - 1;
    do {
      crc = tab[0][(crc ^ (*++p)) & 255] ^ (crc >> 8);
    } while (--len);
  }
  return crc;
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<crc32_body>:
  endbr64
  mov    %edi,%eax
  test   $0x3,%sil
  je     L89
  test   %rdx,%rdx
  jne    L60
L97:
  ret
  nopw   0x0(%rax,%rax,1)
L67:
  test   $0x3,%sil
  je     L89
L60:
  movzbl (%rsi),%edi
  add    $0x1,%rsi
  xor    %eax,%edi
  sar    $0x8,%eax
  movzbl %dil,%edi
  xor    (%rcx,%rdi,4),%eax
  sub    $0x1,%rdx
  jne    L67
  jmp    L97
  nopl   0x0(%rax)
L89:
  mov    %rdx,%r9
  lea    -0x4(%rsi),%rdi
  and    $0x3,%r9d
  shr    $0x2,%rdx
  je     L16
  lea    -0x4(%rsi,%rdx,4),%r8
  cs nopw 0x0(%rax,%rax,1)
L58:
  xor    0x4(%rdi),%eax
  add    $0x4,%rdi
  mov    %eax,%esi
  movzbl %ah,%edx
  sar    $0x10,%esi
  movslq %edx,%rdx
  movzbl %sil,%esi
  mov    0x800(%rcx,%rdx,4),%edx
  xor    0x400(%rcx,%rsi,4),%edx
  movzbl %al,%esi
  shr    $0x18,%eax
  xor    0xc00(%rcx,%rsi,4),%edx
  xor    (%rcx,%rax,4),%edx
  mov    %edx,%eax
  cmp    %r8,%rdi
  jne    L58
L75:
  test   %r9,%r9
  je     L97
  lea    (%r8,%r9,4),%rsi
L79:
  mov    0x4(%r8),%edx
  add    $0x4,%r8
  xor    %eax,%edx
  sar    $0x8,%eax
  movzbl %dl,%edx
  xor    (%rcx,%rdx,4),%eax
  cmp    %rsi,%r8
  jne    L79
  ret
L16:
  mov    %rdi,%r8
  jmp    L75
```

assistant: ```c
uint32_t crc32_body(uint32_t crc, unsigned char const *buf, size_t len, const uint32_t (*tab)[256]) {
  const uint32_t *b;
  size_t rem_len;
  if ((long)buf & 3 && len) {
    do {
      crc = tab[0][(crc ^ (*buf++)) & 255] ^ (crc >> 8);
    } while ((--len) && ((long)buf) & 3);
  }
  rem_len = len & 3;
  len = len >> 2;
  b = (const uint32_t *)buf;
  for (--b; len; --len) {
    crc ^= *++b;
    crc = tab[3][(crc)&255] ^ tab[2][(crc >> 8) & 255] ^ tab[1][(crc >> 16) & 255] ^ tab[0][(crc >> 24) & 255];
  }
  len = rem_len;
  if (len) {
    uint8_t *p = (uint8_t *)(b + 1) - 1;
    do {
      crc = tab[0][(crc ^ (*++p)) & 255] ^ (crc >> 8);
    } while (--len);
  }
  return crc;
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<crc32_body>:
  endbr64
  mov    %edi,%eax
  test   $0x3,%sil
  je     L51
  test   %rdx,%rdx
  jne    L53
L33:
  ret
  nopw   0x0(%rax,%rax,1)
L25:
  test   $0x3,%sil
  je     L51
L53:
  movzbl (%rsi),%edi
  add    $0x1,%rsi
  xor    %eax,%edi
  sar    $0x8,%eax
  movzbl %dil,%edi
  xor    (%rcx,%rdi,4),%eax
  sub    $0x1,%rdx
  jne    L25
  jmp    L33
  nopl   0x0(%rax)
L51:
  mov    %rdx,%r9
  lea    -0x4(%rsi),%rdi
  and    $0x3,%r9d
  shr    $0x2,%rdx
  je     L41
  lea    -0x4(%rsi,%rdx,4),%r8
  nopw   0x0(%rax,%rax,1)
L100:
  xor    0x4(%rdi),%eax
  add    $0x4,%rdi
  mov    %eax,%esi
  movzbl %ah,%edx
  sar    $0x10,%esi
  movslq %edx,%rdx
  movzbl %sil,%esi
  mov    0x800(%rcx,%rdx,4),%edx
  xor    0x400(%rcx,%rsi,4),%edx
  movzbl %al,%esi
  shr    $0x18,%eax
  xor    0xc00(%rcx,%rsi,4),%edx
  xor    (%rcx,%rax,4),%edx
  mov    %edx,%eax
  cmp    %r8,%rdi
  jne    L100
L11:
  test   %r9,%r9
  je     L33
  mov    0x4(%r8),%edx
  xor    %eax,%edx
  sar    $0x8,%eax
  movzbl %dl,%edx
  xor    (%rcx,%rdx,4),%eax
  sub    $0x1,%r9
  je     L33
  mov    0x8(%r8),%edx
  xor    %eax,%edx
  sar    $0x8,%eax
  movzbl %dl,%edx
  xor    (%rcx,%rdx,4),%eax
  cmp    $0x1,%r9
  je     L33
  mov    0xc(%r8),%edx
  xor    %eax,%edx
  sar    $0x8,%eax
  movzbl %dl,%edx
  xor    (%rcx,%rdx,4),%eax
  ret
L41:
  mov    %rdi,%r8
  jmp    L11
```

assistant: ```c
uint32_t crc32_body(uint32_t crc, unsigned char const *buf, size_t len, const uint32_t (*tab)[256]) {
  const uint32_t *b;
  size_t rem_len;
  if ((long)buf & 3 && len) {
    do {
      crc = tab[0][(crc ^ (*buf++)) & 255] ^ (crc >> 8);
    } while ((--len) && ((long)buf) & 3);
  }
  rem_len = len & 3;
  len = len >> 2;
  b = (const uint32_t *)buf;
  for (--b; len; --len) {
    crc ^= *++b;
    crc = tab[3][(crc)&255] ^ tab[2][(crc >> 8) & 255] ^ tab[1][(crc >> 16) & 255] ^ tab[0][(crc >> 24) & 255];
  }
  len = rem_len;
  if (len) {
    uint8_t *p = (uint8_t *)(b + 1) - 1;
    do {
      crc = tab[0][(crc ^ (*++p)) & 255] ^ (crc >> 8);
    } while (--len);
  }
  return crc;
}
```
user: What would the C source look like for the assembly code provided here?

```asm
<dlistfd_remove>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x10,%rsp
  mov    %rdi,-0x8(%rbp)
  mov    %rsi,-0x10(%rbp)
  mov    -0x8(%rbp),%rax
  mov    %rax,%rdi
  call   <dlist_remove@plt>
  mov    -0x10(%rbp),%rax
  mov    %rax,%rdi
  call   <dlistfd_reset@plt>
  nop
  leave
  ret
```

assistant: ```c
void dlistfd_remove(struct dlist_entry *item, struct dlistfd_head *head) {
  dlist_remove(item);
  dlistfd_reset(head);
}
```
user: Translate the below assembly code into C programming language:

```asm
<dlistfd_remove>:
  endbr64
  push   %rbx
  mov    %rsi,%rbx
  call   <dlist_remove@plt>
  mov    %rbx,%rdi
  call   <dlistfd_reset@plt>
  pop    %rbx
  ret
```

assistant: ```c
void dlistfd_remove(struct dlist_entry *item, struct dlistfd_head *head) {
  dlist_remove(item);
  dlistfd_reset(head);
}
```
user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<dlistfd_remove>:
  endbr64
  push   %rbp
  mov    %rsi,%rbp
  call   <dlist_remove@plt>
  mov    %rbp,%rdi
  pop    %rbp
  jmp    1060 <dlistfd_reset@plt>
```

assistant: ```c
void dlistfd_remove(struct dlist_entry *item, struct dlistfd_head *head) {
  dlist_remove(item);
  dlistfd_reset(head);
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<dlistfd_remove>:
  endbr64
  push   %rbp
  mov    %rsi,%rbp
  call   <dlist_remove@plt>
  mov    %rbp,%rdi
  pop    %rbp
  jmp    1060 <dlistfd_reset@plt>
```

assistant: ```c
void dlistfd_remove(struct dlist_entry *item, struct dlistfd_head *head) {
  dlist_remove(item);
  dlistfd_reset(head);
}
```
user: 下面的汇编指令对应的C源代码是什么：

```asm
<mx_strvec_length_cache>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x10,%rsp
  mov    %rdi,-0x8(%rbp)
  mov    %esi,-0xc(%rbp)
  cmpl   $0xffffffff,-0xc(%rbp)
  sete   %al
  movzbl %al,%eax
  mov    $0x1,%esi
  mov    %eax,%edi
  call   <__builtin_expect@plt>
  test   %rax,%rax
  je     L28
  mov    D9(%rip),%rax
  cmp    %rax,-0x8(%rbp)
  sete   %al
  movzbl %al,%eax
  mov    $0x1,%esi
  mov    %eax,%edi
  call   <__builtin_expect@plt>
  test   %rax,%rax
  je     L11
  mov    D19(%rip),%rax
  jmp    L44
L11:
  mov    $0xffffffffffffffff,%rax
  jmp    L44
L28:
  mov    D9(%rip),%rax
  cmp    %rax,-0x8(%rbp)
  sete   %al
  movzbl %al,%eax
  mov    $0x1,%esi
  mov    %eax,%edi
  call   <__builtin_expect@plt>
  test   %rax,%rax
  je     L16
  mov    -0xc(%rbp),%eax
  cltq
  mov    %rax,D16(%rip)
  jmp    L24
L16:
  mov    -0x8(%rbp),%rax
  mov    %rax,D16(%rip)
  mov    -0xc(%rbp),%eax
  cltq
  mov    %rax,D16(%rip)
L24:
  mov    D16(%rip),%rax
L44:
  leave
  ret
```

assistant: ```c
size_t mx_strvec_length_cache(char **strvec, int32_t len) {
  static char **sv = NULL;
  static size_t l = 0;
  if (__builtin_expect((len == -1), 1)) {
    if (__builtin_expect((sv == strvec), 1)) {
      return l;
    }
    return -1;
  }
  if (__builtin_expect((sv == strvec), 1)) {
    l = len;
  } else {
    sv = strvec;
    l = len;
  }
  return l;
}
```
user: 这段汇编代码用C语言表示是什么样的:

```asm
<mx_strvec_length_cache>:
  endbr64
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    %rdi,%rbp
  mov    %esi,%ebx
  cmp    $0xffffffff,%esi
  sete   %dil
  movzbl %dil,%edi
  mov    $0x1,%esi
  call   <__builtin_expect@plt>
  test   %rax,%rax
  je     L35
  cmp    %rbp,D30(%rip)
  sete   %dil
  movzbl %dil,%edi
  mov    $0x1,%esi
  call   <__builtin_expect@plt>
  test   %rax,%rax
  mov    $0xffffffffffffffff,%rax
  cmovne D7(%rip),%rax
L0:
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  ret
L35:
  cmp    %rbp,D17(%rip)
  sete   %dil
  movzbl %dil,%edi
  mov    $0x1,%esi
  call   <__builtin_expect@plt>
  test   %rax,%rax
  je     L39
  movslq %ebx,%rax
L14:
  mov    %rax,D17(%rip)
  jmp    L0
L39:
  mov    %rbp,D17(%rip)
  movslq %ebx,%rax
  jmp    L14
```

assistant: ```c
size_t mx_strvec_length_cache(char **strvec, int32_t len) {
  static char **sv = NULL;
  static size_t l = 0;
  if (__builtin_expect((len == -1), 1)) {
    if (__builtin_expect((sv == strvec), 1)) {
      return l;
    }
    return -1;
  }
  if (__builtin_expect((sv == strvec), 1)) {
    l = len;
  } else {
    sv = strvec;
    l = len;
  }
  return l;
}
```