ylfeng/ReF-Decompile-dataset huggingface dataset:
user: Demonstrate the C code that generates the assembly output below:

```asm
<get_fragmented_memory_page>:
  endbr64
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    $0x25,%edi
  call   <malloc@plt>
  mov    %rax,%rbp
  mov    $0x1000,%edi
  call   <malloc@plt>
  mov    %rax,%rbx
  test   %rax,%rax
  je     L10
  test   %rbp,%rbp
  je     L10
L1:
  mov    %rbp,%rdi
  call   <free@plt>
  mov    %rbx,%rax
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  ret
L10:
  mov    D4(%rip),%rax
  mov    (%rax),%edi
  call   <exit@plt>
  jmp    L1
```

assistant: ```c
void *get_fragmented_memory_page() {
  const unsigned int large_size = 4096UL;
  const unsigned int small_size = 37UL;
  void *s_mem;
  void *l_mem;
  s_mem = malloc(small_size);
  l_mem = malloc(large_size);
  if (l_mem == NULL || s_mem == NULL)
    exit(EXIT_FAILURE);
  free(s_mem);
  return l_mem;
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<get_fragmented_memory_page>:
  endbr64
  push   %r12
  mov    $0x25,%edi
  push   %rbp
  sub    $0x8,%rsp
  call   <malloc@plt>
  mov    $0x1000,%edi
  mov    %rax,%rbp
  call   <malloc@plt>
  mov    %rax,%r12
  test   %rax,%rax
  je     L21
  test   %rbp,%rbp
  je     L21
L28:
  mov    %rbp,%rdi
  call   <free@plt>
  add    $0x8,%rsp
  mov    %r12,%rax
  pop    %rbp
  pop    %r12
  ret
  nopw   0x0(%rax,%rax,1)
L21:
  mov    D7(%rip),%rax
  mov    (%rax),%edi
  call   <exit@plt>
  jmp    L28
```

assistant: ```c
void *get_fragmented_memory_page() {
  const unsigned int large_size = 4096UL;
  const unsigned int small_size = 37UL;
  void *s_mem;
  void *l_mem;
  s_mem = malloc(small_size);
  l_mem = malloc(large_size);
  if (l_mem == NULL || s_mem == NULL)
    exit(EXIT_FAILURE);
  free(s_mem);
  return l_mem;
}
```
user: What would the C source look like for the assembly code provided here?

```asm
<get_fragmented_memory_page>:
  endbr64
  push   %r12
  mov    $0x25,%edi
  push   %rbp
  sub    $0x8,%rsp
  call   <malloc@plt>
  mov    $0x1000,%edi
  mov    %rax,%rbp
  call   <malloc@plt>
  mov    %rax,%r12
  test   %rax,%rax
  je     L19
  test   %rbp,%rbp
  je     L19
L16:
  mov    %rbp,%rdi
  call   <free@plt>
  add    $0x8,%rsp
  mov    %r12,%rax
  pop    %rbp
  pop    %r12
  ret
  nopw   0x0(%rax,%rax,1)
L19:
  mov    D8(%rip),%rax
  mov    (%rax),%edi
  call   <exit@plt>
  jmp    L16
```

assistant: ```c
void *get_fragmented_memory_page() {
  const unsigned int large_size = 4096UL;
  const unsigned int small_size = 37UL;
  void *s_mem;
  void *l_mem;
  s_mem = malloc(small_size);
  l_mem = malloc(large_size);
  if (l_mem == NULL || s_mem == NULL)
    exit(EXIT_FAILURE);
  free(s_mem);
  return l_mem;
}
```
user: Translate the below assembly code into C programming language:

```asm
<luaI_addquoted>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x10,%rsp
  mov    %rdi,-0x8(%rbp)
  mov    $0x22,%edi
  call   <luaI_addchar@plt>
  jmp    L44
L0:
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x22,%al
  je     L6
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x5c,%al
  je     L6
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0xa,%al
  jne    L32
L6:
  mov    $0x5c,%edi
  call   <luaI_addchar@plt>
L32:
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  mov    %eax,%edi
  call   <luaI_addchar@plt>
  addq   $0x1,-0x8(%rbp)
L44:
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  test   %al,%al
  jne    L0
  mov    $0x22,%edi
  call   <luaI_addchar@plt>
  nop
  leave
  ret
```

assistant: ```c
void luaI_addquoted(char *s) {
  luaI_addchar('"');
  for (; *s; s++) {
    if (*s == '"' || *s == '\\' || *s == '\n')
      luaI_addchar('\\');
    luaI_addchar(*s);
  }
  luaI_addchar('"');
}
```
user: What is the c source code of the assembly code below:

```asm
<luaI_addquoted>:
  endbr64
  push   %rbx
  mov    %rdi,%rbx
  mov    $0x22,%edi
  call   <luaI_addchar@plt>
  movzbl (%rbx),%eax
  test   %al,%al
  jne    L26
L40:
  mov    $0x22,%edi
  call   <luaI_addchar@plt>
  pop    %rbx
  ret
L6:
  mov    $0x5c,%edi
  call   <luaI_addchar@plt>
L44:
  movsbl (%rbx),%edi
  call   <luaI_addchar@plt>
  add    $0x1,%rbx
  movzbl (%rbx),%eax
  test   %al,%al
  je     L40
L26:
  cmp    $0x22,%al
  sete   %dl
  cmp    $0x5c,%al
  sete   %cl
  or     %cl,%dl
  jne    L6
  cmp    $0xa,%al
  jne    L44
  jmp    L6
```

assistant: ```c
void luaI_addquoted(char *s) {
  luaI_addchar('"');
  for (; *s; s++) {
    if (*s == '"' || *s == '\\' || *s == '\n')
      luaI_addchar('\\');
    luaI_addchar(*s);
  }
  luaI_addchar('"');
}
```
user: What would the C source look like for the assembly code provided here?

```asm
<luaI_addquoted>:
  endbr64
  push   %rbx
  mov    %rdi,%rbx
  mov    $0x22,%edi
  call   <luaI_addchar@plt>
  movzbl (%rbx),%eax
  test   %al,%al
  jne    L36
  jmp    L12
  nopl   0x0(%rax,%rax,1)
L53:
  cmp    $0xa,%al
  je     L51
L3:
  movsbl (%rbx),%edi
  add    $0x1,%rbx
  call   <luaI_addchar@plt>
  movzbl (%rbx),%eax
  test   %al,%al
  je     L12
L36:
  cmp    $0x22,%al
  sete   %dl
  cmp    $0x5c,%al
  sete   %cl
  or     %cl,%dl
  je     L53
L51:
  mov    $0x5c,%edi
  call   <luaI_addchar@plt>
  jmp    L3
  nopl   0x0(%rax)
L12:
  mov    $0x22,%edi
  pop    %rbx
  jmp    1050 <luaI_addchar@plt>
```

assistant: ```c
void luaI_addquoted(char *s) {
  luaI_addchar('"');
  for (; *s; s++) {
    if (*s == '"' || *s == '\\' || *s == '\n')
      luaI_addchar('\\');
    luaI_addchar(*s);
  }
  luaI_addchar('"');
}
```
user: 这段汇编代码用C语言表示是什么样的：

```asm
<luaI_addquoted>:
  endbr64
  push   %rbx
  mov    %rdi,%rbx
  mov    $0x22,%edi
  call   <luaI_addchar@plt>
  movsbl (%rbx),%edi
  test   %dil,%dil
  jne    L36
  jmp    L30
  nopl   0x0(%rax)
L11:
  cmp    $0xa,%dil
  je     L47
L20:
  call   <luaI_addchar@plt>
  movsbl 0x1(%rbx),%edi
  add    $0x1,%rbx
  test   %dil,%dil
  je     L30
L36:
  cmp    $0x22,%dil
  sete   %al
  cmp    $0x5c,%dil
  sete   %dl
  or     %dl,%al
  je     L11
L47:
  mov    $0x5c,%edi
  call   <luaI_addchar@plt>
  movsbl (%rbx),%edi
  jmp    L20
  nopl   0x0(%rax)
L30:
  mov    $0x22,%edi
  pop    %rbx
  jmp    1050 <luaI_addchar@plt>
```

assistant: ```c
void luaI_addquoted(char *s) {
  luaI_addchar('"');
  for (; *s; s++) {
    if (*s == '"' || *s == '\\' || *s == '\n')
      luaI_addchar('\\');
    luaI_addchar(*s);
  }
  luaI_addchar('"');
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<palindrom>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %rbx
  sub    $0x28,%rsp
  mov    %edi,-0x24(%rbp)
  mov    %rsi,-0x30(%rbp)
  movl   $0x0,-0x18(%rbp)
  jmp    L20
L48:
  mov    -0x24(%rbp),%eax
  cltd
  shr    $0x1c,%edx
  add    %edx,%eax
  and    $0xf,%eax
  sub    %edx,%eax
  mov    %eax,%edx
  mov    -0x18(%rbp),%eax
  movslq %eax,%rcx
  mov    -0x30(%rbp),%rax
  lea    (%rcx,%rax,1),%rbx
  mov    %edx,%edi
  call   <get_hex@plt>
  mov    %al,(%rbx)
  mov    -0x24(%rbp),%eax
  lea    0xf(%rax),%edx
  test   %eax,%eax
  cmovs  %edx,%eax
  sar    $0x4,%eax
  mov    %eax,-0x24(%rbp)
  addl   $0x1,-0x18(%rbp)
L20:
  cmpl   $0x0,-0x24(%rbp)
  jne    L48
  mov    -0x18(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movb   $0x0,(%rax)
  movl   $0x0,-0x18(%rbp)
  mov    -0x30(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  sub    $0x1,%eax
  mov    %eax,-0x14(%rbp)
  jmp    L4
L12:
  mov    -0x18(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%edx
  mov    -0x14(%rbp),%eax
  movslq %eax,%rcx
  mov    -0x30(%rbp),%rax
  add    %rcx,%rax
  movzbl (%rax),%eax
  cmp    %al,%dl
  je     L19
  mov    $0x0,%eax
  jmp    L57
L19:
  addl   $0x1,-0x18(%rbp)
  subl   $0x1,-0x14(%rbp)
L4:
  mov    -0x30(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  sub    $0x1,%eax
  cmp    %eax,-0x18(%rbp)
  jl     L12
  mov    $0x1,%eax
L57:
  mov    -0x8(%rbp),%rbx
  leave
  ret
```

assistant: ```c
int palindrom(int number, char hex[16]) {
  int count, count2;
  for (count = 0; number != 0; count++) {
    hex[count] = get_hex(number % 16);
    number /= 16;
  }
  hex[count] = '\0';
  for (count = 0, count2 = strlen(hex) - 1; count < (strlen(hex) - 1); count++, count2--) {
    if (hex[count] != hex[count2]) {
      return 0;
    }
  }
  return 1;
}
```
user: 请将这段汇编代码片段转换成等效的C代码:

```asm
<palindrom>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  mov    %edi,%ebx
  mov    %rsi,%r12
  test   %edi,%edi
  je     L5
  mov    $0x1,%ebp
L55:
  mov    %ebx,%eax
  sar    $0x1f,%eax
  shr    $0x1c,%eax
  lea    (%rbx,%rax,1),%edi
  and    $0xf,%edi
  sub    %eax,%edi
  call   <get_hex@plt>
  mov    %al,-0x1(%r12,%rbp,1)
  lea    0xf(%rbx),%eax
  test   %ebx,%ebx
  cmovns %ebx,%eax
  sar    $0x4,%eax
  mov    %eax,%ebx
  mov    %ebp,%edx
  add    $0x1,%rbp
  test   %eax,%eax
  jne    L55
L13:
  movslq %edx,%rdx
  movb   $0x0,(%r12,%rdx,1)
  mov    %r12,%rdi
  call   <strlen@plt>
  lea    -0x1(%rax),%ebp
  movslq %ebp,%rbp
  add    %r12,%rbp
  mov    $0x0,%ebx
L48:
  mov    %r12,%rdi
  call   <strlen@plt>
  sub    $0x1,%eax
  cmp    %ebx,%eax
  jle    L41
  movzbl (%r12,%rbx,1),%edx
  movzbl 0x0(%rbp),%eax
  add    $0x1,%rbx
  sub    $0x1,%rbp
  cmp    %al,%dl
  je     L48
  mov    $0x0,%eax
  jmp    L11
L5:
  mov    %edi,%edx
  jmp    L13
L41:
  mov    $0x1,%eax
L11:
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
```

assistant: ```c
int palindrom(int number, char hex[16]) {
  int count, count2;
  for (count = 0; number != 0; count++) {
    hex[count] = get_hex(number % 16);
    number /= 16;
  }
  hex[count] = '\0';
  for (count = 0, count2 = strlen(hex) - 1; count < (strlen(hex) - 1); count++, count2--) {
    if (hex[count] != hex[count2]) {
      return 0;
    }
  }
  return 1;
}
```
user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<palindrom>:
  endbr64
  push   %r12
  mov    %rsi,%r12
  push   %rbp
  push   %rbx
  test   %edi,%edi
  je     L22
  mov    %edi,%ebx
  mov    $0x1,%ebp
  nopw   0x0(%rax,%rax,1)
L49:
  mov    %ebx,%eax
  sar    $0x1f,%eax
  shr    $0x1c,%eax
  lea    (%rbx,%rax,1),%edi
  and    $0xf,%edi
  sub    %eax,%edi
  call   <get_hex@plt>
  test   %ebx,%ebx
  mov    %al,-0x1(%r12,%rbp,1)
  lea    0xf(%rbx),%eax
  cmovs  %eax,%ebx
  movslq %ebp,%rax
  add    $0x1,%rbp
  sar    $0x4,%ebx
  jne    L49
  add    %r12,%rax
L30:
  movb   $0x0,(%rax)
  mov    %r12,%rdi
  xor    %ebx,%ebx
  call   <strlen@plt>
  lea    -0x1(%rax),%ebp
  movslq %ebp,%rbp
  add    %r12,%rbp
  jmp    L7
  nopl   0x0(%rax)
L56:
  movzbl (%r12,%rbx,1),%edx
  movzbl 0x0(%rbp),%eax
  add    $0x1,%rbx
  sub    $0x1,%rbp
  cmp    %al,%dl
  jne    L59
L7:
  mov    %r12,%rdi
  call   <strlen@plt>
  sub    $0x1,%eax
  cmp    %ebx,%eax
  jg     L56
  pop    %rbx
  mov    $0x1,%eax
  pop    %rbp
  pop    %r12
  ret
  xchg   %ax,%ax
L59:
  pop    %rbx
  xor    %eax,%eax
  pop    %rbp
  pop    %r12
  ret
  nopw   0x0(%rax,%rax,1)
L22:
  mov    %rsi,%rax
  jmp    L30
```

assistant: ```c
int palindrom(int number, char hex[16]) {
  int count, count2;
  for (count = 0; number != 0; count++) {
    hex[count] = get_hex(number % 16);
    number /= 16;
  }
  hex[count] = '\0';
  for (count = 0, count2 = strlen(hex) - 1; count < (strlen(hex) - 1); count++, count2--) {
    if (hex[count] != hex[count2]) {
      return 0;
    }
  }
  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
<palindrom>:
  endbr64
  push   %r12
  mov    %rsi,%r12
  push   %rbp
  push   %rbx
  test   %edi,%edi
  je     L59
  mov    %edi,%ebx
  mov    $0x1,%ebp
  nopw   0x0(%rax,%rax,1)
L35:
  mov    %ebx,%eax
  sar    $0x1f,%eax
  shr    $0x1c,%eax
  lea    (%rbx,%rax,1),%edi
  and    $0xf,%edi
  sub    %eax,%edi
  call   <get_hex@plt>
  test   %ebx,%ebx
  mov    %al,-0x1(%r12,%rbp,1)
  lea    0xf(%rbx),%eax
  cmovs  %eax,%ebx
  movslq %ebp,%rax
  add    $0x1,%rbp
  sar    $0x4,%ebx
  jne    L35
  add    %r12,%rax
L43:
  movb   $0x0,(%rax)
  mov    %r12,%rdi
  xor    %ebx,%ebx
  call   <strlen@plt>
  lea    -0x1(%rax),%ebp
  movslq %ebp,%rbp
  add    %r12,%rbp
  jmp    L22
  nopl   0x0(%rax)
L49:
  movzbl (%r12,%rbx,1),%edx
  movzbl 0x0(%rbp),%eax
  add    $0x1,%rbx
  sub    $0x1,%rbp
  cmp    %al,%dl
  jne    L6
L22:
  mov    %r12,%rdi
  call   <strlen@plt>
  sub    $0x1,%eax
  cmp    %ebx,%eax
  jg     L49
  pop    %rbx
  mov    $0x1,%eax
  pop    %rbp
  pop    %r12
  ret
  xchg   %ax,%ax
L6:
  pop    %rbx
  xor    %eax,%eax
  pop    %rbp
  pop    %r12
  ret
  nopw   0x0(%rax,%rax,1)
L59:
  mov    %rsi,%rax
  jmp    L43
```

assistant: ```c
int palindrom(int number, char hex[16]) {
  int count, count2;
  for (count = 0; number != 0; count++) {
    hex[count] = get_hex(number % 16);
    number /= 16;
  }
  hex[count] = '\0';
  for (count = 0, count2 = strlen(hex) - 1; count < (strlen(hex) - 1); count++, count2--) {
    if (hex[count] != hex[count2]) {
      return 0;
    }
  }
  return 1;
}
```
user: What is the c source code of the assembly code below:

```asm
<__strcasestr>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %rdi,-0x28(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,-0x20(%rbp)
  mov    -0x30(%rbp),%rax
  mov    %rax,-0x18(%rbp)
  mov    -0x20(%rbp),%rax
  mov    %rax,%rdi
  call   <__insn_prefetch@plt>
  mov    -0x30(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  mov    %rax,-0x10(%rbp)
  cmpq   $0x2,-0x10(%rbp)
  ja     L41
  cmpq   $0x1,-0x10(%rbp)
  jne    L55
  mov    -0x30(%rbp),%rax
  movzbl (%rax),%eax
  movsbl %al,%edx
  mov    -0x28(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <strcasechr@plt>
  jmp    L2
L55:
  cmpq   $0x0,-0x10(%rbp)
  jne    L56
  mov    -0x28(%rbp),%rax
  jmp    L2
L56:
  mov    -0x30(%rbp),%rdx
  mov    -0x28(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcasestr2@plt>
  jmp    L2
L41:
  mov    -0x10(%rbp),%rdx
  mov    -0x20(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <__strnlen@plt>
  cmp    %rax,-0x10(%rbp)
  jbe    L137
  mov    $0x0,%eax
  jmp    L2
L137:
  cmpq   $0x27,-0x10(%rbp)
  ja     L9
  mov    -0x10(%rbp),%rdx
  mov    -0x30(%rbp),%rcx
  mov    -0x28(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <strcasestr_scan@plt>
  jmp    L2
L9:
  mov    -0x30(%rbp),%rdx
  mov    -0x28(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcasestr2@plt>
  mov    %rax,-0x20(%rbp)
  cmpq   $0x0,-0x20(%rbp)
  jne    L37
  mov    $0x0,%eax
  jmp    L2
L37:
  mov    -0x30(%rbp),%rax
  mov    %rax,-0x18(%rbp)
  mov    -0x28(%rbp),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  cmp    %rax,-0x20(%rbp)
  ja     L49
  mov    -0x28(%rbp),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  sub    -0x20(%rbp),%rax
  jmp    L43
L49:
  mov    $0x1,%eax
L43:
  mov    %rax,-0x8(%rbp)
  mov    -0x10(%rbp),%rcx
  mov    -0x18(%rbp),%rdx
  mov    -0x8(%rbp),%rsi
  mov    -0x20(%rbp),%rax
  mov    %rax,%rdi
  call   <two_way_long_needle@plt>
L2:
  leave
  ret
```

assistant: ```c
char *__strcasestr(const char *haystack_start, const char *needle_start) {
  const char *haystack = haystack_start;
  const char *needle = needle_start;
  __insn_prefetch(haystack);
  size_t needle_len = strlen(needle_start);
  size_t haystack_len;
  if (needle_len <= 2) {
    if (needle_len == 1)
      return strcasechr(haystack_start, *needle_start);
    if (needle_len == 0)
      return (char *)haystack_start;
    else
      return strcasestr2(haystack_start, needle_start);
  }
  if (__strnlen(haystack, needle_len) < needle_len)
    return NULL;
  if (needle_len < 40)
    return strcasestr_scan(haystack_start, needle_start, needle_len);
  else {
    haystack = strcasestr2(haystack_start, needle_start);
    if (haystack == NULL)
      return NULL;
    needle = needle_start;
    haystack_len = (haystack > haystack_start + needle_len ? 1 : needle_len + haystack_start - haystack);
    return two_way_long_needle((const unsigned char *)haystack, haystack_len, (const unsigned char *)needle, needle_len);
  }
}
```
user: What would the C source look like for the assembly code provided here?

```asm
<__strcasestr>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%r12
  mov    %rsi,%rbp
  call   <__insn_prefetch@plt>
  mov    %rbp,%rdi
  call   <strlen@plt>
  mov    %rax,%rbx
  cmp    $0x2,%rax
  ja     L72
  cmp    $0x1,%rax
  je     L104
  mov    %r12,%rax
  test   %rbx,%rbx
  jne    L31
L46:
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
L104:
  movsbl 0x0(%rbp),%esi
  mov    %r12,%rdi
  call   <strcasechr@plt>
  jmp    L46
L31:
  mov    %rbp,%rsi
  mov    %r12,%rdi
  call   <strcasestr2@plt>
  jmp    L46
L72:
  mov    %rax,%rsi
  mov    %r12,%rdi
  call   <__strnlen@plt>
  cmp    %rbx,%rax
  jb     L91
  cmp    $0x27,%rbx
  jbe    L77
  mov    %rbp,%rsi
  mov    %r12,%rdi
  call   <strcasestr2@plt>
  test   %rax,%rax
  je     L46
  lea    (%r12,%rbx,1),%rdx
  mov    %rdx,%rsi
  sub    %rax,%rsi
  cmp    %rax,%rdx
  mov    $0x1,%edx
  cmovb  %rdx,%rsi
  mov    %rbx,%rcx
  mov    %rbp,%rdx
  mov    %rax,%rdi
  call   <two_way_long_needle@plt>
  jmp    L46
L77:
  mov    %rbx,%rdx
  mov    %rbp,%rsi
  mov    %r12,%rdi
  call   <strcasestr_scan@plt>
  jmp    L46
L91:
  mov    $0x0,%eax
  jmp    L46
```

assistant: ```c
char *__strcasestr(const char *haystack_start, const char *needle_start) {
  const char *haystack = haystack_start;
  const char *needle = needle_start;
  __insn_prefetch(haystack);
  size_t needle_len = strlen(needle_start);
  size_t haystack_len;
  if (needle_len <= 2) {
    if (needle_len == 1)
      return strcasechr(haystack_start, *needle_start);
    if (needle_len == 0)
      return (char *)haystack_start;
    else
      return strcasestr2(haystack_start, needle_start);
  }
  if (__strnlen(haystack, needle_len) < needle_len)
    return NULL;
  if (needle_len < 40)
    return strcasestr_scan(haystack_start, needle_start, needle_len);
  else {
    haystack = strcasestr2(haystack_start, needle_start);
    if (haystack == NULL)
      return NULL;
    needle = needle_start;
    haystack_len = (haystack > haystack_start + needle_len ? 1 : needle_len + haystack_start - haystack);
    return two_way_long_needle((const unsigned char *)haystack, haystack_len, (const unsigned char *)needle, needle_len);
  }
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<__strcasestr>:
  endbr64
  push   %r13
  mov    %rsi,%r13
  push   %r12
  push   %rbp
  mov    %rdi,%rbp
  call   <__insn_prefetch@plt>
  mov    %r13,%rdi
  call   <strlen@plt>
  mov    %rax,%r12
  cmp    $0x2,%rax
  ja     L5
  cmp    $0x1,%rax
  je     L10
  mov    %rbp,%rax
  test   %r12,%r12
  jne    L0
L9:
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopl   (%rax)
L5:
  mov    %rax,%rsi
  mov    %rbp,%rdi
  call   <__strnlen@plt>
  cmp    %r12,%rax
  jb     L66
  cmp    $0x27,%r12
  jbe    L48
  mov    %rbp,%rdi
  mov    %r13,%rsi
  call   <strcasestr2@plt>
  mov    %rax,%rdi
  test   %rax,%rax
  je     L66
  add    %r12,%rbp
  mov    %r12,%rcx
  mov    %r13,%rdx
  mov    %rbp,%rsi
  sub    %rax,%rsi
  cmp    %rax,%rbp
  mov    $0x1,%eax
  pop    %rbp
  cmovb  %rax,%rsi
  pop    %r12
  pop    %r13
  jmp    1110 <two_way_long_needle@plt>
  xchg   %ax,%ax
L0:
  mov    %r13,%rsi
  mov    %rbp,%rdi
  pop    %rbp
  pop    %r12
  pop    %r13
  jmp    10e0 <strcasestr2@plt>
L48:
  mov    %r12,%rdx
  mov    %r13,%rsi
  mov    %rbp,%rdi
  pop    %rbp
  pop    %r12
  pop    %r13
  jmp    10c0 <strcasestr_scan@plt>
  nopl   0x0(%rax,%rax,1)
L66:
  xor    %eax,%eax
  jmp    L9
  nop
L10:
  movsbl 0x0(%r13),%esi
  mov    %rbp,%rdi
  pop    %rbp
  pop    %r12
  pop    %r13
  jmp    1100 <strcasechr@plt>
```

assistant: ```c
char *__strcasestr(const char *haystack_start, const char *needle_start) {
  const char *haystack = haystack_start;
  const char *needle = needle_start;
  __insn_prefetch(haystack);
  size_t needle_len = strlen(needle_start);
  size_t haystack_len;
  if (needle_len <= 2) {
    if (needle_len == 1)
      return strcasechr(haystack_start, *needle_start);
    if (needle_len == 0)
      return (char *)haystack_start;
    else
      return strcasestr2(haystack_start, needle_start);
  }
  if (__strnlen(haystack, needle_len) < needle_len)
    return NULL;
  if (needle_len < 40)
    return strcasestr_scan(haystack_start, needle_start, needle_len);
  else {
    haystack = strcasestr2(haystack_start, needle_start);
    if (haystack == NULL)
      return NULL;
    needle = needle_start;
    haystack_len = (haystack > haystack_start + needle_len ? 1 : needle_len + haystack_start - haystack);
    return two_way_long_needle((const unsigned char *)haystack, haystack_len, (const unsigned char *)needle, needle_len);
  }
}
```
user: 下面的汇编指令对应的C源代码是什么：

```asm
<__strcasestr>:
  endbr64
  push   %r13
  mov    %rsi,%r13
  push   %r12
  push   %rbp
  mov    %rdi,%rbp
  call   <__insn_prefetch@plt>
  mov    %r13,%rdi
  call   <strlen@plt>
  mov    %rax,%r12
  cmp    $0x2,%rax
  ja     L28
  cmp    $0x1,%rax
  je     L18
  mov    %rbp,%rax
  test   %r12,%r12
  jne    L67
L60:
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopl   (%rax)
L28:
  mov    %rax,%rsi
  mov    %rbp,%rdi
  call   <__strnlen@plt>
  cmp    %r12,%rax
  jb     L6
  cmp    $0x27,%r12
  jbe    L11
  mov    %rbp,%rdi
  mov    %r13,%rsi
  call   <strcasestr2@plt>
  mov    %rax,%rdi
  test   %rax,%rax
  je     L6
  add    %r12,%rbp
  mov    %r12,%rcx
  mov    %r13,%rdx
  mov    %rbp,%rsi
  sub    %rax,%rsi
  cmp    %rax,%rbp
  mov    $0x1,%eax
  pop    %rbp
  cmovb  %rax,%rsi
  pop    %r12
  pop    %r13
  jmp    1110 <two_way_long_needle@plt>
  xchg   %ax,%ax
L67:
  mov    %r13,%rsi
  mov    %rbp,%rdi
  pop    %rbp
  pop    %r12
  pop    %r13
  jmp    10e0 <strcasestr2@plt>
L11:
  mov    %r12,%rdx
  mov    %r13,%rsi
  mov    %rbp,%rdi
  pop    %rbp
  pop    %r12
  pop    %r13
  jmp    10c0 <strcasestr_scan@plt>
  nopl   0x0(%rax,%rax,1)
L6:
  xor    %eax,%eax
  jmp    L60
  nop
L18:
  movsbl 0x0(%r13),%esi
  mov    %rbp,%rdi
  pop    %rbp
  pop    %r12
  pop    %r13
  jmp    1100 <strcasechr@plt>
```

assistant: ```c
char *__strcasestr(const char *haystack_start, const char *needle_start) {
  const char *haystack = haystack_start;
  const char *needle = needle_start;
  __insn_prefetch(haystack);
  size_t needle_len = strlen(needle_start);
  size_t haystack_len;
  if (needle_len <= 2) {
    if (needle_len == 1)
      return strcasechr(haystack_start, *needle_start);
    if (needle_len == 0)
      return (char *)haystack_start;
    else
      return strcasestr2(haystack_start, needle_start);
  }
  if (__strnlen(haystack, needle_len) < needle_len)
    return NULL;
  if (needle_len < 40)
    return strcasestr_scan(haystack_start, needle_start, needle_len);
  else {
    haystack = strcasestr2(haystack_start, needle_start);
    if (haystack == NULL)
      return NULL;
    needle = needle_start;
    haystack_len = (haystack > haystack_start + needle_len ? 1 : needle_len + haystack_start - haystack);
    return two_way_long_needle((const unsigned char *)haystack, haystack_len, (const unsigned char *)needle, needle_len);
  }
}
```
user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<symbol_table_lookup_user>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %rdi,-0x38(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  mov    -0x38(%rbp),%rdx
  lea    -0x30(%rbp),%rax
  mov    %rdx,%rcx
  lea    D4(%rip),%rdx
  mov    $0x20,%esi
  mov    %rax,%rdi
  call   <snprintf@plt>
  lea    -0x30(%rbp),%rax
  mov    %rax,%rdi
  call   <symbol_table_lookup@plt>
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L3
  call   <__stack_chk_fail@plt>
L3:
  leave
  ret
```

tool_calls: name: read_data
arguments: label: D4
type: string

tool: D4: _%s

assistant: ```c
struct symbol *symbol_table_lookup_user(char *name) {
  char user_symbol[32];
  snprintf(user_symbol, 32, "_%s", name);
  return symbol_table_lookup(user_symbol);
}
```