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

```asm
<fn5>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x10,%rsp
  mov    $0x0,%eax
  call   <rand@plt>
  mov    %eax,%edx
  movslq %edx,%rax
  imul   $0x66666667,%rax,%rax
  shr    $0x20,%rax
  sar    $0x3,%eax
  mov    %edx,%esi
  sar    $0x1f,%esi
  sub    %esi,%eax
  mov    %eax,%ecx
  mov    %ecx,%eax
  shl    $0x2,%eax
  add    %ecx,%eax
  shl    $0x2,%eax
  mov    %edx,%ecx
  sub    %eax,%ecx
  lea    0x14(%rcx),%eax
  mov    %eax,%edi
  call   <malloc@plt>
  mov    %rax,-0x8(%rbp)
  mov    $0x0,%eax
  call   <rand@plt>
  mov    %eax,%edx
  movslq %edx,%rax
  imul   $0x66666667,%rax,%rax
  shr    $0x20,%rax
  sar    $0x3,%eax
  mov    %edx,%esi
  sar    $0x1f,%esi
  sub    %esi,%eax
  mov    %eax,%ecx
  mov    %ecx,%eax
  shl    $0x2,%eax
  add    %ecx,%eax
  shl    $0x2,%eax
  sub    %eax,%edx
  mov    %edx,%ecx
  lea    0x1e(%rcx),%edx
  mov    -0x8(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <realloc@plt>
  mov    %rax,-0x8(%rbp)
  mov    -0x8(%rbp),%rax
  lea    D2(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcpy@plt>
  mov    -0x8(%rbp),%rax
  leave
  ret
```

tool_calls: name: disassemble_data
arguments: data_label: D2
data_type: string

tool: D2: fn5

assistant: ```c
char *fn5() {
  char *result;
  result = malloc(20 + rand() % 20);
  result = realloc(result, 30 + rand() % 20);
  strcpy((char *)result, "fn5");
  return result;
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<fn5>:
  endbr64
  push   %rbx
  mov    $0x0,%eax
  call   <rand@plt>
  movslq %eax,%rdx
  imul   $0x66666667,%rdx,%rdx
  sar    $0x23,%rdx
  mov    %eax,%ecx
  sar    $0x1f,%ecx
  sub    %ecx,%edx
  lea    (%rdx,%rdx,4),%edx
  shl    $0x2,%edx
  sub    %edx,%eax
  lea    0x14(%rax),%edi
  call   <malloc@plt>
  mov    %rax,%rbx
  mov    $0x0,%eax
  call   <rand@plt>
  movslq %eax,%rdx
  imul   $0x66666667,%rdx,%rdx
  sar    $0x23,%rdx
  mov    %eax,%ecx
  sar    $0x1f,%ecx
  sub    %ecx,%edx
  lea    (%rdx,%rdx,4),%edx
  shl    $0x2,%edx
  sub    %edx,%eax
  lea    0x1e(%rax),%esi
  mov    %rbx,%rdi
  call   <realloc@plt>
  mov    %rax,%rbx
  lea    D3(%rip),%rsi
  mov    %rax,%rdi
  call   <strcpy@plt>
  mov    %rbx,%rax
  pop    %rbx
  ret
```

tool_calls: name: unpack_data
arguments: label: D3
data_type: string

tool: D3: fn5

assistant: ```c
char *fn5() {
  char *result;
  result = malloc(20 + rand() % 20);
  result = realloc(result, 30 + rand() % 20);
  strcpy((char *)result, "fn5");
  return result;
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<fn5>:
  endbr64
  push   %r12
  xor    %eax,%eax
  call   <rand@plt>
  movslq %eax,%rdx
  mov    %eax,%ecx
  imul   $0x66666667,%rdx,%rdx
  sar    $0x1f,%ecx
  sar    $0x23,%rdx
  sub    %ecx,%edx
  lea    (%rdx,%rdx,4),%edx
  shl    $0x2,%edx
  sub    %edx,%eax
  lea    0x14(%rax),%edi
  call   <malloc@plt>
  mov    %rax,%r12
  xor    %eax,%eax
  call   <rand@plt>
  mov    %r12,%rdi
  movslq %eax,%rdx
  mov    %eax,%ecx
  imul   $0x66666667,%rdx,%rdx
  sar    $0x1f,%ecx
  sar    $0x23,%rdx
  sub    %ecx,%edx
  lea    (%rdx,%rdx,4),%edx
  shl    $0x2,%edx
  sub    %edx,%eax
  lea    0x1e(%rax),%esi
  call   <realloc@plt>
  lea    D1(%rip),%rsi
  mov    %rax,%r12
  mov    %rax,%rdi
  call   <strcpy@plt>
  mov    %r12,%rax
  pop    %r12
  ret
```

tool_calls: name: unpack_data
arguments: data_tag: D1
data_type: string

tool: D1: fn5

assistant: ```c
char *fn5() {
  char *result;
  result = malloc(20 + rand() % 20);
  result = realloc(result, 30 + rand() % 20);
  strcpy((char *)result, "fn5");
  return result;
}
```
user: 请从给定的汇编指令推导出C源代码:

```asm
<fn5>:
  endbr64
  push   %r12
  xor    %eax,%eax
  call   <rand@plt>
  movslq %eax,%rdx
  mov    %eax,%ecx
  imul   $0x66666667,%rdx,%rdx
  sar    $0x1f,%ecx
  sar    $0x23,%rdx
  sub    %ecx,%edx
  lea    (%rdx,%rdx,4),%edx
  shl    $0x2,%edx
  sub    %edx,%eax
  lea    0x14(%rax),%edi
  call   <malloc@plt>
  mov    %rax,%r12
  xor    %eax,%eax
  call   <rand@plt>
  mov    %r12,%rdi
  movslq %eax,%rdx
  mov    %eax,%ecx
  imul   $0x66666667,%rdx,%rdx
  sar    $0x1f,%ecx
  sar    $0x23,%rdx
  sub    %ecx,%edx
  lea    (%rdx,%rdx,4),%edx
  shl    $0x2,%edx
  sub    %edx,%eax
  lea    0x1e(%rax),%esi
  call   <realloc@plt>
  lea    D8(%rip),%rsi
  mov    %rax,%r12
  mov    %rax,%rdi
  call   <strcpy@plt>
  mov    %r12,%rax
  pop    %r12
  ret
```

tool_calls: name: unpack_data
arguments: tag: D8
data_type: string

tool: D8: fn5

assistant: ```c
char *fn5() {
  char *result;
  result = malloc(20 + rand() % 20);
  result = realloc(result, 30 + rand() % 20);
  strcpy((char *)result, "fn5");
  return result;
}
```
user: 请将以下的汇编代码转换成C语言代码:

```asm
<xstrdup>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x18(%rbp)
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <strdup@plt>
  mov    %rax,-0x8(%rbp)
  cmpq   $0x0,-0x8(%rbp)
  jne    L4
  lea    D7(%rip),%rax
  mov    %rax,%rsi
  mov    $0x1,%edi
  call   <err@plt>
L4:
  mov    -0x8(%rbp),%rax
  leave
  ret
```

tool_calls: name: parse_data
arguments: data_tag: D7
type_infered: string

tool: D7: strdup() failed

assistant: ```c
char *xstrdup(const char *s) {
  char *ret = strdup(s);
  if (ret == NULL)
    err(1, "strdup() failed");
  return ret;
}
```
user: What is the c source code of the assembly code below:

```asm
<xstrdup>:
  endbr64
  push   %rbx
  call   <strdup@plt>
  mov    %rax,%rbx
  test   %rax,%rax
  je     L8
L19:
  mov    %rbx,%rax
  pop    %rbx
  ret
L8:
  lea    D2(%rip),%rsi
  mov    $0x1,%edi
  call   <err@plt>
  jmp    L19
```

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

tool: D2: strdup() failed

assistant: ```c
char *xstrdup(const char *s) {
  char *ret = strdup(s);
  if (ret == NULL)
    err(1, "strdup() failed");
  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
<xstrdup>:
  endbr64
  push   %r12
  call   <strdup@plt>
  mov    %rax,%r12
  test   %rax,%rax
  je     L8
L5:
  mov    %r12,%rax
  pop    %r12
  ret
L8:
  lea    D1(%rip),%rsi
  mov    $0x1,%edi
  call   <err@plt>
  jmp    L5
```

tool_calls: name: unpack_data
arguments: data_label: D1
datatype: string

tool: D1: strdup() failed

assistant: ```c
char *xstrdup(const char *s) {
  char *ret = strdup(s);
  if (ret == NULL)
    err(1, "strdup() failed");
  return ret;
}
```
user: 请从给定的汇编指令推导出C源代码:

```asm
<xstrdup>:
  endbr64
  push   %r12
  call   <strdup@plt>
  mov    %rax,%r12
  test   %rax,%rax
  je     L2
L7:
  mov    %r12,%rax
  pop    %r12
  ret
L2:
  lea    D2(%rip),%rsi
  mov    $0x1,%edi
  call   <err@plt>
  jmp    L7
```

tool_calls: name: parse_data
arguments: label: D2
type_infered: string

tool: D2: strdup() failed

assistant: ```c
char *xstrdup(const char *s) {
  char *ret = strdup(s);
  if (ret == NULL)
    err(1, "strdup() failed");
  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
<_alt_strcasestr>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %rbx
  sub    $0x38,%rsp
  mov    %rdi,-0x38(%rbp)
  mov    %rsi,-0x40(%rbp)
  movq   $0x0,-0x20(%rbp)
  movq   $0x0,-0x18(%rbp)
  mov    -0x38(%rbp),%rax
  mov    %rax,-0x28(%rbp)
  jmp    L79
L6:
  cmpq   $0x0,-0x18(%rbp)
  je     L23
  mov    -0x28(%rbp),%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  mov    %eax,%edi
  call   <toupper@plt>
  mov    %rax,%rbx
  mov    -0x18(%rbp),%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  mov    %eax,%edi
  call   <toupper@plt>
  cmp    %rax,%rbx
  jne    L75
  addq   $0x1,-0x18(%rbp)
  mov    -0x18(%rbp),%rax
  movzbl (%rax),%eax
  test   %al,%al
  jne    L42
  mov    -0x20(%rbp),%rax
  jmp    L38
L75:
  movq   $0x0,-0x18(%rbp)
  jmp    L42
L23:
  mov    -0x28(%rbp),%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  mov    %eax,%edi
  call   <toupper@plt>
  mov    %rax,%rbx
  mov    -0x40(%rbp),%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  mov    %eax,%edi
  call   <toupper@plt>
  cmp    %rax,%rbx
  jne    L42
  mov    -0x40(%rbp),%rax
  add    $0x1,%rax
  mov    %rax,-0x18(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,-0x20(%rbp)
L42:
  addq   $0x1,-0x28(%rbp)
L79:
  mov    -0x28(%rbp),%rax
  movzbl (%rax),%eax
  test   %al,%al
  jne    L6
  mov    $0x0,%eax
L38:
  mov    -0x8(%rbp),%rbx
  leave
  ret
```

assistant: ```c
const char *_alt_strcasestr(const char *haystack, const char *needle) {
  const char *p;
  const char *startn = 0;
  const char *np = 0;
  for (p = haystack; *p; p++) {
    if (np) {
      if (toupper((unsigned char)*p) == toupper((unsigned char)*np)) {
        if (!*++np)
          return startn;
      } else
        np = 0;
    } else if (toupper((unsigned char)*p) == toupper((unsigned char)*needle)) {
      np = needle + 1;
      startn = p;
    }
  }
  return 0;
}
```
user: What is the c source code of the assembly code below?

```asm
<_alt_strcasestr>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    %rdi,%rbx
  movzbl (%rdi),%edi
  test   %dil,%dil
  je     L89
  mov    %rsi,%r13
  mov    $0x0,%ebp
  mov    $0x0,%r12d
  lea    0x1(%rsi),%r14
  jmp    L15
L84:
  lea    0x1(%rbp),%rax
  cmpb   $0x0,0x1(%rbp)
  je     L25
  mov    %rax,%rbp
  jmp    L80
L78:
  movzbl %dil,%edi
  call   <toupper@plt>
  mov    %rax,%r15
  movzbl 0x0(%r13),%edi
  call   <toupper@plt>
  cmp    %rax,%r15
  cmove  %r14,%rbp
  cmove  %rbx,%r12
L80:
  add    $0x1,%rbx
  movzbl (%rbx),%edi
  test   %dil,%dil
  je     L0
L15:
  test   %rbp,%rbp
  je     L78
  movzbl %dil,%edi
  call   <toupper@plt>
  mov    %rax,%r15
  movzbl 0x0(%rbp),%edi
  call   <toupper@plt>
  cmp    %rax,%r15
  je     L84
  mov    $0x0,%ebp
  jmp    L80
L0:
  mov    $0x0,%r12d
L25:
  mov    %r12,%rax
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L89:
  mov    $0x0,%r12d
  jmp    L25
```

assistant: ```c
const char *_alt_strcasestr(const char *haystack, const char *needle) {
  const char *p;
  const char *startn = 0;
  const char *np = 0;
  for (p = haystack; *p; p++) {
    if (np) {
      if (toupper((unsigned char)*p) == toupper((unsigned char)*np)) {
        if (!*++np)
          return startn;
      } else
        np = 0;
    } else if (toupper((unsigned char)*p) == toupper((unsigned char)*needle)) {
      np = needle + 1;
      startn = p;
    }
  }
  return 0;
}
```
user: Translate the below assembly code into C programming language:

```asm
<_alt_strcasestr>:
  endbr64
  push   %r15
  mov    %rdi,%r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  movzbl (%rdi),%edi
  test   %dil,%dil
  je     L99
  xor    %ebx,%ebx
  mov    %rsi,%rbp
  lea    0x1(%rsi),%r13
  xor    %r12d,%r12d
  test   %rbx,%rbx
  je     L32
  nopw   0x0(%rax,%rax,1)
L109:
  call   <toupper@plt>
  movzbl (%rbx),%edi
  mov    %rax,%r14
  call   <toupper@plt>
  cmp    %rax,%r14
  je     L75
  movzbl 0x1(%r15),%edi
  lea    0x1(%r15),%r12
  test   %dil,%dil
  je     L99
L16:
  call   <toupper@plt>
  movzbl 0x0(%rbp),%edi
  mov    %rax,%rbx
  call   <toupper@plt>
  cmp    %rax,%rbx
  je     L27
  movzbl 0x1(%r12),%edi
  add    $0x1,%r12
  test   %dil,%dil
  jne    L16
L99:
  xor    %r12d,%r12d
L106:
  add    $0x8,%rsp
  mov    %r12,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   (%rax)
L75:
  cmpb   $0x0,0x1(%rbx)
  lea    0x1(%rbx),%rdx
  je     L106
  mov    %r15,%rax
  mov    %rdx,%rbx
L50:
  movzbl 0x1(%rax),%edi
  lea    0x1(%rax),%r15
  test   %dil,%dil
  je     L99
  test   %rbx,%rbx
  jne    L109
L32:
  mov    %r15,%r12
  jmp    L16
  nopl   0x0(%rax,%rax,1)
L27:
  mov    %r13,%rbx
  mov    %r12,%rax
  jmp    L50
```

assistant: ```c
const char *_alt_strcasestr(const char *haystack, const char *needle) {
  const char *p;
  const char *startn = 0;
  const char *np = 0;
  for (p = haystack; *p; p++) {
    if (np) {
      if (toupper((unsigned char)*p) == toupper((unsigned char)*np)) {
        if (!*++np)
          return startn;
      } else
        np = 0;
    } else if (toupper((unsigned char)*p) == toupper((unsigned char)*needle)) {
      np = needle + 1;
      startn = p;
    }
  }
  return 0;
}
```
user: 请从给定的汇编指令推导出C源代码:

```asm
<_alt_strcasestr>:
  endbr64
  push   %r15
  mov    %rdi,%r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  movzbl (%rdi),%edi
  test   %dil,%dil
  je     L62
  xor    %ebx,%ebx
  mov    %rsi,%rbp
  lea    0x1(%rsi),%r13
  xor    %r12d,%r12d
  test   %rbx,%rbx
  je     L87
  nopw   0x0(%rax,%rax,1)
L81:
  call   <toupper@plt>
  movzbl (%rbx),%edi
  mov    %rax,%r14
  call   <toupper@plt>
  cmp    %rax,%r14
  je     L45
  movzbl 0x1(%r15),%edi
  lea    0x1(%r15),%r12
  test   %dil,%dil
  je     L62
L79:
  call   <toupper@plt>
  movzbl 0x0(%rbp),%edi
  mov    %rax,%rbx
  call   <toupper@plt>
  cmp    %rax,%rbx
  je     L27
  movzbl 0x1(%r12),%edi
  add    $0x1,%r12
  test   %dil,%dil
  jne    L79
L62:
  xor    %r12d,%r12d
L29:
  add    $0x8,%rsp
  mov    %r12,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   (%rax)
L45:
  cmpb   $0x0,0x1(%rbx)
  lea    0x1(%rbx),%rdx
  je     L29
  mov    %r15,%rax
  mov    %rdx,%rbx
L67:
  movzbl 0x1(%rax),%edi
  lea    0x1(%rax),%r15
  test   %dil,%dil
  je     L62
  test   %rbx,%rbx
  jne    L81
L87:
  mov    %r15,%r12
  jmp    L79
  nopl   0x0(%rax,%rax,1)
L27:
  mov    %r13,%rbx
  mov    %r12,%rax
  jmp    L67
```

assistant: ```c
const char *_alt_strcasestr(const char *haystack, const char *needle) {
  const char *p;
  const char *startn = 0;
  const char *np = 0;
  for (p = haystack; *p; p++) {
    if (np) {
      if (toupper((unsigned char)*p) == toupper((unsigned char)*np)) {
        if (!*++np)
          return startn;
      } else
        np = 0;
    } else if (toupper((unsigned char)*p) == toupper((unsigned char)*needle)) {
      np = needle + 1;
      startn = p;
    }
  }
  return 0;
}
```
user: 请从给定的汇编指令推导出C源代码:

```asm
<Postgresql>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x10,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movb   $0x1,-0x9(%rbp)
  mov    $0x0,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L0
  call   <__stack_chk_fail@plt>
L0:
  leave
  ret
```

assistant: ```c
int Postgresql() {
  char x;
  return ((((&x) != ((void *)0)) ? (*(&x) = ((char)1)) : (void)((void *)0)), (unsigned long)((void *)0));
}
```
user: Translate the below assembly code into C programming language:

```asm
<Postgresql>:
  endbr64
  mov    $0x0,%eax
  ret
```

assistant: ```c
int Postgresql() {
  char x;
  return ((((&x) != ((void *)0)) ? (*(&x) = ((char)1)) : (void)((void *)0)), (unsigned long)((void *)0));
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<Postgresql>:
  endbr64
  xor    %eax,%eax
  ret
```

assistant: ```c
int Postgresql() {
  char x;
  return ((((&x) != ((void *)0)) ? (*(&x) = ((char)1)) : (void)((void *)0)), (unsigned long)((void *)0));
}
```
user: 请将以下的汇编代码转换成C语言代码：

```asm
<Postgresql>:
  endbr64
  xor    %eax,%eax
  ret
```

assistant: ```c
int Postgresql() {
  char x;
  return ((((&x) != ((void *)0)) ? (*(&x) = ((char)1)) : (void)((void *)0)), (unsigned long)((void *)0));
}
```
user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<utoa>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %edi,-0x14(%rbp)
  mov    %rsi,-0x20(%rbp)
  movl   $0x0,-0xc(%rbp)
  movl   $0x0,-0x8(%rbp)
  mov    -0x14(%rbp),%eax
  mov    %eax,-0x10(%rbp)
L7:
  addl   $0x1,-0xc(%rbp)
  mov    -0x10(%rbp),%eax
  movslq %eax,%rdx
  imul   $0x66666667,%rdx,%rdx
  shr    $0x20,%rdx
  sar    $0x2,%edx
  sar    $0x1f,%eax
  mov    %eax,%ecx
  mov    %edx,%eax
  sub    %ecx,%eax
  mov    %eax,-0x10(%rbp)
  cmpl   $0x0,-0x10(%rbp)
  jne    L7
  mov    -0x8(%rbp),%edx
  mov    -0xc(%rbp),%eax
  add    %edx,%eax
  movslq %eax,%rdx
  mov    -0x20(%rbp),%rax
  add    %rdx,%rax
  movb   $0x0,(%rax)
L10:
  mov    -0x14(%rbp),%ecx
  mov    %ecx,%edx
  mov    $0xcccccccd,%eax
  imul   %rdx,%rax
  shr    $0x20,%rax
  mov    %eax,%edx
  shr    $0x3,%edx
  mov    %edx,%eax
  shl    $0x2,%eax
  add    %edx,%eax
  add    %eax,%eax
  sub    %eax,%ecx
  mov    %ecx,%edx
  mov    %edx,-0x4(%rbp)
  mov    -0x4(%rbp),%eax
  lea    0x30(%rax),%ecx
  mov    -0x8(%rbp),%edx
  mov    -0xc(%rbp),%eax
  add    %edx,%eax
  cltq
  lea    -0x1(%rax),%rdx
  mov    -0x20(%rbp),%rax
  add    %rdx,%rax
  mov    %ecx,%edx
  mov    %dl,(%rax)
  mov    -0x4(%rbp),%eax
  sub    %eax,-0x14(%rbp)
  subl   $0x1,-0xc(%rbp)
  mov    -0x14(%rbp),%eax
  mov    %eax,%edx
  mov    $0xcccccccd,%eax
  imul   %rdx,%rax
  shr    $0x20,%rax
  shr    $0x3,%eax
  mov    %eax,-0x14(%rbp)
  cmpl   $0x0,-0x14(%rbp)
  jne    L10
  mov    -0x20(%rbp),%rax
  pop    %rbp
  ret
```

assistant: ```c
char *utoa(unsigned number, char *buffer) {
  int lentest, len = 0, i, start = 0;
  lentest = number;
  do {
    len++;
    lentest /= 10;
  } while (lentest);
  buffer[start + len] = 0;
  do {
    i = number % 10;
    buffer[start + len - 1] = '0' + i;
    number -= i;
    len -= 1;
    number /= 10;
  } while (number);
  return buffer;
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<utoa>:
  endbr64
  mov    %edi,%edx
  mov    %edi,%ecx
  mov    $0x0,%edi
L14:
  add    $0x1,%edi
  movslq %ecx,%rax
  imul   $0x66666667,%rax,%rax
  sar    $0x22,%rax
  sar    $0x1f,%ecx
  sub    %ecx,%eax
  mov    %eax,%ecx
  jne    L14
  movslq %edi,%rdi
  movb   $0x0,(%rsi,%rdi,1)
  lea    -0x1(%rsi,%rdi,1),%rdi
  mov    $0xcccccccd,%r8d
L11:
  mov    %edx,%eax
  imul   %r8,%rax
  shr    $0x23,%rax
  lea    (%rax,%rax,4),%ecx
  add    %ecx,%ecx
  mov    %edx,%eax
  sub    %ecx,%eax
  lea    0x30(%rax),%ecx
  mov    %cl,(%rdi)
  sub    %eax,%edx
  mov    %edx,%ecx
  mov    %edx,%edx
  imul   %r8,%rdx
  shr    $0x23,%rdx
  sub    $0x1,%rdi
  cmp    $0x9,%ecx
  ja     L11
  mov    %rsi,%rax
  ret
```

assistant: ```c
char *utoa(unsigned number, char *buffer) {
  int lentest, len = 0, i, start = 0;
  lentest = number;
  do {
    len++;
    lentest /= 10;
  } while (lentest);
  buffer[start + len] = 0;
  do {
    i = number % 10;
    buffer[start + len - 1] = '0' + i;
    number -= i;
    len -= 1;
    number /= 10;
  } while (number);
  return buffer;
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<utoa>:
  endbr64
  mov    %edi,%edx
  mov    %edi,%ecx
  mov    %rsi,%r8
  xor    %edi,%edi
  nopl   (%rax)
L0:
  movslq %ecx,%rax
  mov    %ecx,%esi
  add    $0x1,%edi
  imul   $0x66666667,%rax,%rax
  sar    $0x1f,%esi
  sar    $0x22,%rax
  sub    %esi,%eax
  mov    %eax,%ecx
  jne    L0
  movslq %edi,%rdi
  movb   $0x0,(%r8,%rdi,1)
  lea    -0x1(%r8,%rdi,1),%rsi
  mov    $0xcccccccd,%edi
  xchg   %ax,%ax
L4:
  mov    %edx,%eax
  sub    $0x1,%rsi
  imul   %rdi,%rax
  shr    $0x23,%rax
  lea    (%rax,%rax,4),%ecx
  mov    %edx,%eax
  add    %ecx,%ecx
  sub    %ecx,%eax
  lea    0x30(%rax),%ecx
  sub    %eax,%edx
  mov    %cl,0x1(%rsi)
  mov    %edx,%ecx
  imul   %rdi,%rdx
  shr    $0x23,%rdx
  cmp    $0x9,%ecx
  ja     L4
  mov    %r8,%rax
  ret
```

assistant: ```c
char *utoa(unsigned number, char *buffer) {
  int lentest, len = 0, i, start = 0;
  lentest = number;
  do {
    len++;
    lentest /= 10;
  } while (lentest);
  buffer[start + len] = 0;
  do {
    i = number % 10;
    buffer[start + len - 1] = '0' + i;
    number -= i;
    len -= 1;
    number /= 10;
  } while (number);
  return buffer;
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<utoa>:
  endbr64
  mov    %edi,%edx
  mov    %edi,%ecx
  mov    %rsi,%r8
  xor    %edi,%edi
  nopl   (%rax)
L18:
  movslq %ecx,%rax
  mov    %ecx,%esi
  add    $0x1,%edi
  imul   $0x66666667,%rax,%rax
  sar    $0x1f,%esi
  sar    $0x22,%rax
  sub    %esi,%eax
  mov    %eax,%ecx
  jne    L18
  movslq %edi,%rdi
  movb   $0x0,(%r8,%rdi,1)
  lea    -0x1(%r8,%rdi,1),%rsi
  mov    $0xcccccccd,%edi
  xchg   %ax,%ax
L7:
  mov    %edx,%eax
  sub    $0x1,%rsi
  imul   %rdi,%rax
  shr    $0x23,%rax
  lea    (%rax,%rax,4),%ecx
  mov    %edx,%eax
  add    %ecx,%ecx
  sub    %ecx,%eax
  lea    0x30(%rax),%ecx
  sub    %eax,%edx
  mov    %cl,0x1(%rsi)
  mov    %edx,%ecx
  imul   %rdi,%rdx
  shr    $0x23,%rdx
  cmp    $0x9,%ecx
  ja     L7
  mov    %r8,%rax
  ret
```

assistant: ```c
char *utoa(unsigned number, char *buffer) {
  int lentest, len = 0, i, start = 0;
  lentest = number;
  do {
    len++;
    lentest /= 10;
  } while (lentest);
  buffer[start + len] = 0;
  do {
    i = number % 10;
    buffer[start + len - 1] = '0' + i;
    number -= i;
    len -= 1;
    number /= 10;
  } while (number);
  return buffer;
}
```
user: 请从给定的汇编指令推导出C源代码：

```asm
<f_read16>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %rdi,-0x18(%rbp)
  mov    %rsi,-0x20(%rbp)
  mov    %rdx,-0x28(%rbp)
  movq   $0x0,-0x8(%rbp)
  cmpq   $0x0,-0x20(%rbp)
  je     L3
  mov    -0x28(%rbp),%rdx
  mov    -0x20(%rbp),%rcx
  mov    -0x18(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <f_read@plt>
  mov    %rax,-0x8(%rbp)
  mov    -0x20(%rbp),%rax
  mov    %rax,%rdi
  call   <swap16@plt>
L3:
  mov    -0x8(%rbp),%rax
  leave
  ret
```

assistant: ```c
size_t f_read16(FILE *f, void *buf, size_t size) {
  size_t ret = 0;
  if (buf) {
    ret = f_read(f, buf, size);
    swap16((int16_t *)buf);
  }
  return ret;
}
```
user: 请将以下的汇编代码转换成C语言代码：

```asm
<f_read16>:
  endbr64
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    $0x0,%ebp
  test   %rsi,%rsi
  je     L8
  mov    %rsi,%rbx
  call   <f_read@plt>
  mov    %rax,%rbp
  mov    %rbx,%rdi
  call   <swap16@plt>
L8:
  mov    %rbp,%rax
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  ret
```

assistant: ```c
size_t f_read16(FILE *f, void *buf, size_t size) {
  size_t ret = 0;
  if (buf) {
    ret = f_read(f, buf, size);
    swap16((int16_t *)buf);
  }
  return ret;
}
```
user: 这段汇编代码用C语言表示是什么样的？

```asm
<f_read16>:
  endbr64
  push   %r12
  xor    %r12d,%r12d
  push   %rbp
  sub    $0x8,%rsp
  test   %rsi,%rsi
  je     L7
  mov    %rsi,%rbp
  call   <f_read@plt>
  mov    %rbp,%rdi
  mov    %rax,%r12
  call   <swap16@plt>
L7:
  add    $0x8,%rsp
  mov    %r12,%rax
  pop    %rbp
  pop    %r12
  ret
```

assistant: ```c
size_t f_read16(FILE *f, void *buf, size_t size) {
  size_t ret = 0;
  if (buf) {
    ret = f_read(f, buf, size);
    swap16((int16_t *)buf);
  }
  return ret;
}
```
user: 这段汇编代码用C语言表示是什么样的：

```asm
<f_read16>:
  endbr64
  push   %r12
  xor    %r12d,%r12d
  push   %rbp
  sub    $0x8,%rsp
  test   %rsi,%rsi
  je     L8
  mov    %rsi,%rbp
  call   <f_read@plt>
  mov    %rbp,%rdi
  mov    %rax,%r12
  call   <swap16@plt>
L8:
  add    $0x8,%rsp
  mov    %r12,%rax
  pop    %rbp
  pop    %r12
  ret
```

assistant: ```c
size_t f_read16(FILE *f, void *buf, size_t size) {
  size_t ret = 0;
  if (buf) {
    ret = f_read(f, buf, size);
    swap16((int16_t *)buf);
  }
  return ret;
}
```