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

```asm
<wcscat>:
  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   <wcslen@plt>
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x8(%rbp),%rax
  add    %rax,%rdx
  mov    -0x10(%rbp),%rax
  mov    %rax,%rsi
  mov    %rdx,%rdi
  call   <wcscpy@plt>
  mov    -0x8(%rbp),%rax
  leave
  ret
```

assistant: ```c
wchar_t *wcscat(wchar_t *restrict dest, const wchar_t *restrict src) {
  wcscpy(dest + wcslen(dest), src);
  return dest;
}
```
user: Translate the below assembly code into C programming language:

```asm
<wcscat>:
  endbr64
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    %rdi,%rbx
  mov    %rsi,%rbp
  call   <wcslen@plt>
  cltq
  lea    (%rbx,%rax,4),%rdi
  mov    %rbp,%rsi
  call   <wcscpy@plt>
  mov    %rbx,%rax
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  ret
```

assistant: ```c
wchar_t *wcscat(wchar_t *restrict dest, const wchar_t *restrict src) {
  wcscpy(dest + wcslen(dest), src);
  return dest;
}
```
user: What is the c source code of the assembly code below:

```asm
<wcscat>:
  endbr64
  push   %r12
  mov    %rdi,%r12
  push   %rbp
  mov    %rsi,%rbp
  sub    $0x8,%rsp
  call   <wcslen@plt>
  mov    %rbp,%rsi
  cltq
  lea    (%r12,%rax,4),%rdi
  call   <wcscpy@plt>
  add    $0x8,%rsp
  mov    %r12,%rax
  pop    %rbp
  pop    %r12
  ret
```

assistant: ```c
wchar_t *wcscat(wchar_t *restrict dest, const wchar_t *restrict src) {
  wcscpy(dest + wcslen(dest), src);
  return dest;
}
```
user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<wcscat>:
  endbr64
  push   %r12
  mov    %rdi,%r12
  push   %rbp
  mov    %rsi,%rbp
  sub    $0x8,%rsp
  call   <wcslen@plt>
  mov    %rbp,%rsi
  cltq
  lea    (%r12,%rax,4),%rdi
  call   <wcscpy@plt>
  add    $0x8,%rsp
  mov    %r12,%rax
  pop    %rbp
  pop    %r12
  ret
```

assistant: ```c
wchar_t *wcscat(wchar_t *restrict dest, const wchar_t *restrict src) {
  wcscpy(dest + wcslen(dest), src);
  return dest;
}
```
user: 请将以下的汇编代码转换成C语言代码:

```asm
<Absff_Atof>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x18(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  lea    -0xc(%rbp),%rdx
  mov    -0x18(%rbp),%rax
  lea    D7(%rip),%rcx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <sscanf@plt>
  test   %eax,%eax
  jle    L0
  movss  -0xc(%rbp),%xmm0
  jmp    L22
L0:
  pxor   %xmm0,%xmm0
L22:
  mov    -0x8(%rbp),%rax
  sub    %fs:0x28,%rax
  je     L1
  call   <__stack_chk_fail@plt>
L1:
  leave
  ret
```

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

tool: D7: %f

assistant: ```c
float Absff_Atof(s)
char *s;
{
  float f;
  if (sscanf(s, "%f", &f) > 0)
    return f;
  else
    return 0.0;
}
```
user: 这段汇编代码用C语言表示是什么样的：

```asm
<Absff_Atof>:
  endbr64
  sub    $0x18,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  lea    0x4(%rsp),%rdx
  lea    D0(%rip),%rsi
  call   <sscanf@plt>
  pxor   %xmm0,%xmm0
  test   %eax,%eax
  jle    L9
  movss  0x4(%rsp),%xmm0
L9:
  mov    0x8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L10
  add    $0x18,%rsp
  ret
L10:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: parse_data
arguments: label: D0
type_infered: string

tool: D0: %f

assistant: ```c
float Absff_Atof(s)
char *s;
{
  float f;
  if (sscanf(s, "%f", &f) > 0)
    return f;
  else
    return 0.0;
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<Absff_Atof>:
  endbr64
  sub    $0x18,%rsp
  lea    D8(%rip),%rsi
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  lea    0x4(%rsp),%rdx
  call   <sscanf@plt>
  pxor   %xmm0,%xmm0
  test   %eax,%eax
  jle    L9
  movss  0x4(%rsp),%xmm0
L9:
  mov    0x8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L17
  add    $0x18,%rsp
  ret
L17:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: extract_symbolic_data
arguments: data_label: D8
datatype: string

tool: D8: %f

assistant: ```c
float Absff_Atof(s)
char *s;
{
  float f;
  if (sscanf(s, "%f", &f) > 0)
    return f;
  else
    return 0.0;
}
```
user: What would the C source look like for the assembly code provided here:

```asm
<Absff_Atof>:
  endbr64
  sub    $0x18,%rsp
  lea    D1(%rip),%rsi
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  lea    0x4(%rsp),%rdx
  call   <sscanf@plt>
  pxor   %xmm0,%xmm0
  test   %eax,%eax
  jle    L17
  movss  0x4(%rsp),%xmm0
L17:
  mov    0x8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L18
  add    $0x18,%rsp
  ret
L18:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: extract_symbolic_data
arguments: data_tag: D1
datatype: string

tool: D1: %f

assistant: ```c
float Absff_Atof(s)
char *s;
{
  float f;
  if (sscanf(s, "%f", &f) > 0)
    return f;
  else
    return 0.0;
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<fat_fclose>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x8(%rbp)
  mov    %rsi,-0x10(%rbp)
  mov    $0x0,%eax
  pop    %rbp
  ret
```

assistant: ```c
int fat_fclose(struct fs *fs, struct vfs_file *fp) {
  (void)fs;
  (void)fp;
  return 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
<fat_fclose>:
  endbr64
  mov    $0x0,%eax
  ret
```

assistant: ```c
int fat_fclose(struct fs *fs, struct vfs_file *fp) {
  (void)fs;
  (void)fp;
  return 0;
}
```
user: 下面的汇编指令对应的C源代码是什么：

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

assistant: ```c
int fat_fclose(struct fs *fs, struct vfs_file *fp) {
  (void)fs;
  (void)fp;
  return 0;
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<teardown_ipfw_rules>:
  endbr64
  sub    $0x8,%rsp
  lea    D14(%rip),%rdi
  call   <printf@plt>
  lea    D48(%rip),%rdi
  call   <system@plt>
  test   %rax,%rax
  jne    L12
L7:
  lea    D17(%rip),%rdi
  call   <printf@plt>
  add    $0x8,%rsp
  ret
L12:
  lea    D48(%rip),%rsi
  lea    D18(%rip),%rdi
  call   <warn@plt>
  jmp    L7
```

tool_calls: name: extract_symbolic_data
arguments: data_tag: D14
type_guessed: string
name: extract_symbolic_data
arguments: data_tag: D48
type_guessed: string
name: extract_symbolic_data
arguments: data_tag: D17
type_guessed: string
name: extract_symbolic_data
arguments: data_tag: D18
type_guessed: string

tool: D14: Restoring ipfw to previous configuration...

tool: D48: pfctl -d

tool: D17: OK


tool: D18: ipfw warning: %s

assistant: ```c
void teardown_ipfw_rules() {
  static char *cmd = "pfctl -d";
  printf("Restoring ipfw to previous configuration...");
  if (system(cmd))
    warn("ipfw warning: %s", cmd);
  printf("OK\n");
}
```
user: 请将以下的汇编代码转换成C语言代码：

```asm
<teardown_ipfw_rules>:
  endbr64
  push   %rbp
  lea    D36(%rip),%rdi
  lea    D42(%rip),%rbp
  call   <printf@plt>
  mov    %rbp,%rdi
  call   <system@plt>
  test   %rax,%rax
  jne    L5
  lea    D20(%rip),%rdi
  pop    %rbp
  jmp    1090 <printf@plt>
  nopw   0x0(%rax,%rax,1)
L5:
  mov    %rbp,%rsi
  lea    D2(%rip),%rdi
  call   <warn@plt>
  lea    D20(%rip),%rdi
  pop    %rbp
  jmp    1090 <printf@plt>
```

tool_calls: name: read_data
arguments: tag: D36
data_type: string
name: read_data
arguments: tag: D42
data_type: string
name: read_data
arguments: tag: D20
data_type: string
name: read_data
arguments: tag: D2
data_type: string

tool: D36: Restoring ipfw to previous configuration...

tool: D42: pfctl -d

tool: D20: OK


tool: D2: ipfw warning: %s

assistant: ```c
void teardown_ipfw_rules() {
  static char *cmd = "pfctl -d";
  printf("Restoring ipfw to previous configuration...");
  if (system(cmd))
    warn("ipfw warning: %s", cmd);
  printf("OK\n");
}
```
user: 这段汇编代码用C语言表示是什么样的？

```asm
<teardown_ipfw_rules>:
  endbr64
  push   %rbp
  lea    D28(%rip),%rdi
  lea    D8(%rip),%rbp
  call   <printf@plt>
  mov    %rbp,%rdi
  call   <system@plt>
  test   %rax,%rax
  jne    L4
  lea    D3(%rip),%rdi
  pop    %rbp
  jmp    1090 <printf@plt>
  nopw   0x0(%rax,%rax,1)
L4:
  mov    %rbp,%rsi
  lea    D9(%rip),%rdi
  call   <warn@plt>
  lea    D3(%rip),%rdi
  pop    %rbp
  jmp    1090 <printf@plt>
```

tool_calls: name: read_data
arguments: label: D28
type_guessed: string
name: read_data
arguments: label: D8
type_guessed: string
name: read_data
arguments: label: D3
type_guessed: string
name: read_data
arguments: label: D9
type_guessed: string

tool: D28: Restoring ipfw to previous configuration...

tool: D8: pfctl -d

tool: D3: OK


tool: D9: ipfw warning: %s

assistant: ```c
void teardown_ipfw_rules() {
  static char *cmd = "pfctl -d";
  printf("Restoring ipfw to previous configuration...");
  if (system(cmd))
    warn("ipfw warning: %s", cmd);
  printf("OK\n");
}
```
user: Translate the below assembly code into C programming language:

```asm
<find_firmware_key>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %rdi,-0x38(%rbp)
  mov    %rsi,-0x40(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movl   $0x31643433,-0x17(%rbp)
  movb   $0x0,-0x13(%rbp)
  lea    -0x17(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  mov    %rax,-0x28(%rbp)
  movabs $0x62456f62436e6254,%rax
  mov    %rax,-0x12(%rbp)
  movw   $0x6e,-0xa(%rbp)
  lea    -0x12(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  mov    %rax,-0x20(%rbp)
  movq   $0x0,-0x30(%rbp)
  jmp    L18
L66:
  mov    -0x40(%rbp),%rax
  cmp    -0x28(%rbp),%rax
  jb     L12
  mov    -0x38(%rbp),%rdx
  mov    -0x30(%rbp),%rax
  lea    (%rdx,%rax,1),%rcx
  mov    -0x28(%rbp),%rdx
  lea    -0x17(%rbp),%rax
  mov    %rax,%rsi
  mov    %rcx,%rdi
  call   <strncmp@plt>
  test   %eax,%eax
  jne    L12
  mov    -0x38(%rbp),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  jmp    L79
L12:
  mov    -0x40(%rbp),%rax
  cmp    -0x20(%rbp),%rax
  jb     L19
  mov    -0x38(%rbp),%rdx
  mov    -0x30(%rbp),%rax
  lea    (%rdx,%rax,1),%rcx
  mov    -0x20(%rbp),%rdx
  lea    -0x12(%rbp),%rax
  mov    %rax,%rsi
  mov    %rcx,%rdi
  call   <strncmp@plt>
  test   %eax,%eax
  jne    L19
  mov    -0x38(%rbp),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  jmp    L79
L19:
  addq   $0x1,-0x30(%rbp)
L18:
  mov    -0x30(%rbp),%rax
  cmp    -0x40(%rbp),%rax
  jb     L66
  mov    $0x0,%eax
L79:
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L51
  call   <__stack_chk_fail@plt>
L51:
  leave
  ret
```

assistant: ```c
const char *find_firmware_key(const unsigned char *buffer, size_t len) {
  char szkey1[] = "34d1";
  size_t cchkey1 = strlen(szkey1);
  char szkey2[] = "TbnCboEbn";
  size_t cchkey2 = strlen(szkey2);
  uint32_t i;
  for (i = 0; i < (uint32_t)len; i++) {
    if (len >= cchkey1) {
      if (!strncmp((char *)&buffer[i], szkey1, cchkey1))
        return (const char *)&buffer[i];
    }
    if (len >= cchkey2) {
      if (!strncmp((char *)&buffer[i], szkey2, cchkey2))
        return (const char *)&buffer[i];
    }
  }
  return NULL;
}
```
user: What is the c source code of the assembly code below:

```asm
<find_firmware_key>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x38,%rsp
  mov    %rdi,%r14
  mov    %rsi,%rbp
  mov    %fs:0x28,%rax
  mov    %rax,0x28(%rsp)
  xor    %eax,%eax
  movl   $0x31643433,0x19(%rsp)
  movb   $0x0,0x1d(%rsp)
  lea    0x19(%rsp),%rdi
  call   <strlen@plt>
  mov    %rax,%r12
  movabs $0x62456f62436e6254,%rax
  mov    %rax,0x1e(%rsp)
  movw   $0x6e,0x26(%rsp)
  lea    0x1e(%rsp),%rdi
  call   <strlen@plt>
  test   %rbp,%rbp
  je     L82
  mov    %rax,%r13
  mov    %r14,%rbx
  add    %rbp,%r14
  lea    0x19(%rsp),%r15
  lea    0x1e(%rsp),%rax
  mov    %rax,0x8(%rsp)
  jmp    L74
L35:
  add    $0x1,%rbx
  cmp    %r14,%rbx
  je     L8
L74:
  cmp    %rbp,%r12
  ja     L30
  mov    %rbx,(%rsp)
  mov    %r12,%rdx
  mov    %r15,%rsi
  mov    %rbx,%rdi
  call   <strncmp@plt>
  test   %eax,%eax
  je     L50
L30:
  cmp    %rbp,%r13
  ja     L35
  mov    %rbx,(%rsp)
  mov    %r13,%rdx
  mov    0x8(%rsp),%rsi
  mov    %rbx,%rdi
  call   <strncmp@plt>
  test   %eax,%eax
  jne    L35
  jmp    L50
L8:
  movq   $0x0,(%rsp)
L50:
  mov    0x28(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L45
  mov    (%rsp),%rax
  add    $0x38,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L82:
  movq   $0x0,(%rsp)
  jmp    L50
L45:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
const char *find_firmware_key(const unsigned char *buffer, size_t len) {
  char szkey1[] = "34d1";
  size_t cchkey1 = strlen(szkey1);
  char szkey2[] = "TbnCboEbn";
  size_t cchkey2 = strlen(szkey2);
  uint32_t i;
  for (i = 0; i < (uint32_t)len; i++) {
    if (len >= cchkey1) {
      if (!strncmp((char *)&buffer[i], szkey1, cchkey1))
        return (const char *)&buffer[i];
    }
    if (len >= cchkey2) {
      if (!strncmp((char *)&buffer[i], szkey2, cchkey2))
        return (const char *)&buffer[i];
    }
  }
  return NULL;
}
```
user: What is the c source code of the assembly code below:

```asm
<find_firmware_key>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x28,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  movl   $0x31643433,0x9(%rsp)
  movabs $0x62456f62436e6254,%rax
  mov    %rax,0xe(%rsp)
  mov    $0x6e,%eax
  movb   $0x0,0xd(%rsp)
  mov    %ax,0x16(%rsp)
  test   %rsi,%rsi
  je     L14
  mov    %rsi,%rbp
  lea    (%rdi,%rsi,1),%r13
  lea    0x9(%rsp),%r14
  mov    %rdi,%rbx
  lea    0xe(%rsp),%r15
  nopl   0x0(%rax)
L40:
  cmp    $0x3,%rbp
  jbe    L44
  mov    $0x4,%edx
  mov    %r14,%rsi
  mov    %rbx,%rdi
  mov    %rbx,%r12
  call   <strncmp@plt>
  test   %eax,%eax
  je     L32
L44:
  cmp    $0x8,%rbp
  jbe    L30
  mov    $0x9,%edx
  mov    %r15,%rsi
  mov    %rbx,%rdi
  mov    %rbx,%r12
  call   <strncmp@plt>
  test   %eax,%eax
  je     L32
L30:
  add    $0x1,%rbx
  cmp    %r13,%rbx
  jne    L40
L14:
  xor    %r12d,%r12d
L32:
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L15
  add    $0x28,%rsp
  mov    %r12,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L15:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
const char *find_firmware_key(const unsigned char *buffer, size_t len) {
  char szkey1[] = "34d1";
  size_t cchkey1 = strlen(szkey1);
  char szkey2[] = "TbnCboEbn";
  size_t cchkey2 = strlen(szkey2);
  uint32_t i;
  for (i = 0; i < (uint32_t)len; i++) {
    if (len >= cchkey1) {
      if (!strncmp((char *)&buffer[i], szkey1, cchkey1))
        return (const char *)&buffer[i];
    }
    if (len >= cchkey2) {
      if (!strncmp((char *)&buffer[i], szkey2, cchkey2))
        return (const char *)&buffer[i];
    }
  }
  return NULL;
}
```
user: 这段汇编代码用C语言表示是什么样的：

```asm
<find_firmware_key>:
  endbr64
  push   %r13
  push   %r12
  xor    %r12d,%r12d
  push   %rbp
  push   %rbx
  sub    $0x28,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  movl   $0x31643433,0x9(%rsp)
  movabs $0x62456f62436e6254,%rax
  mov    %rax,0xe(%rsp)
  mov    $0x6e,%eax
  movb   $0x0,0xd(%rsp)
  mov    %ax,0x16(%rsp)
  test   %rsi,%rsi
  je     L18
  cmp    $0x3,%rsi
  jbe    L18
  mov    %rdi,%r12
  lea    (%rdi,%rsi,1),%rbx
  lea    0x9(%rsp),%rbp
  cmp    $0x8,%rsi
  jbe    L110
  lea    0xe(%rsp),%r13
  jmp    L63
  nopl   0x0(%rax,%rax,1)
L93:
  mov    $0x9,%edx
  mov    %r13,%rsi
  mov    %r12,%rdi
  call   <strncmp@plt>
  test   %eax,%eax
  je     L18
  add    $0x1,%r12
  cmp    %rbx,%r12
  je     L2
L63:
  mov    $0x4,%edx
  mov    %rbp,%rsi
  mov    %r12,%rdi
  call   <strncmp@plt>
  test   %eax,%eax
  jne    L93
  nopl   0x0(%rax)
L18:
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L103
  add    $0x28,%rsp
  mov    %r12,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  cs nopw 0x0(%rax,%rax,1)
L92:
  add    $0x1,%r12
  cmp    %rbx,%r12
  je     L2
L110:
  mov    $0x4,%edx
  mov    %rbp,%rsi
  mov    %r12,%rdi
  call   <strncmp@plt>
  test   %eax,%eax
  jne    L92
  jmp    L18
  nop
L2:
  xor    %r12d,%r12d
  jmp    L18
L103:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
const char *find_firmware_key(const unsigned char *buffer, size_t len) {
  char szkey1[] = "34d1";
  size_t cchkey1 = strlen(szkey1);
  char szkey2[] = "TbnCboEbn";
  size_t cchkey2 = strlen(szkey2);
  uint32_t i;
  for (i = 0; i < (uint32_t)len; i++) {
    if (len >= cchkey1) {
      if (!strncmp((char *)&buffer[i], szkey1, cchkey1))
        return (const char *)&buffer[i];
    }
    if (len >= cchkey2) {
      if (!strncmp((char *)&buffer[i], szkey2, cchkey2))
        return (const char *)&buffer[i];
    }
  }
  return NULL;
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<show_bstr>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x18(%rbp)
  movl   $0x0,-0x4(%rbp)
  jmp    L37
L11:
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  mov    %eax,%edi
  call   <putchar@plt>
  addl   $0x1,-0x4(%rbp)
  mov    -0x4(%rbp),%eax
  and    $0x3,%eax
  test   %eax,%eax
  jne    L37
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  test   %al,%al
  je     L37
  mov    $0x20,%edi
  call   <putchar@plt>
L37:
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  test   %al,%al
  jne    L11
  nop
  nop
  leave
  ret
```

assistant: ```c
void show_bstr(const char *str) {
  int i = 0;
  while (str[i]) {
    putchar(str[i]);
    if (++i % 4 == 0 && str[i]) {
      putchar(' ');
    }
  }
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<show_bstr>:
  endbr64
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    %rdi,%rbp
  movzbl (%rdi),%edi
  test   %dil,%dil
  je     L44
  movsbl %dil,%edi
  call   <putchar@plt>
  mov    $0x2,%ebx
  jmp    L6
L45:
  mov    $0x20,%edi
  call   <putchar@plt>
L47:
  add    $0x1,%rbx
L6:
  movzbl -0x1(%rbp,%rbx,1),%edi
  test   %dil,%dil
  je     L44
  movsbl %dil,%edi
  call   <putchar@plt>
  test   $0x3,%bl
  jne    L47
  cmpb   $0x0,0x0(%rbp,%rbx,1)
  jne    L45
L44:
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  ret
```

assistant: ```c
void show_bstr(const char *str) {
  int i = 0;
  while (str[i]) {
    putchar(str[i]);
    if (++i % 4 == 0 && str[i]) {
      putchar(' ');
    }
  }
}
```
user: 请将以下的汇编代码转换成C语言代码:

```asm
<show_bstr>:
  endbr64
  push   %rbp
  mov    %rdi,%rbp
  push   %rbx
  sub    $0x8,%rsp
  movsbl (%rdi),%edi
  test   %dil,%dil
  je     L18
  call   <putchar@plt>
  mov    $0x2,%ebx
  nop
L49:
  movsbl -0x1(%rbp,%rbx,1),%edi
  test   %dil,%dil
  je     L18
  call   <putchar@plt>
  test   $0x3,%bl
  jne    L38
  cmpb   $0x0,0x0(%rbp,%rbx,1)
  jne    L44
L18:
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  ret
  nopw   0x0(%rax,%rax,1)
L44:
  mov    $0x20,%edi
  call   <putchar@plt>
L38:
  add    $0x1,%rbx
  jmp    L49
```

assistant: ```c
void show_bstr(const char *str) {
  int i = 0;
  while (str[i]) {
    putchar(str[i]);
    if (++i % 4 == 0 && str[i]) {
      putchar(' ');
    }
  }
}
```
user: 请将以下的汇编代码转换成C语言代码:

```asm
<show_bstr>:
  endbr64
  push   %rbp
  mov    %rdi,%rbp
  push   %rbx
  sub    $0x8,%rsp
  movsbl (%rdi),%edi
  test   %dil,%dil
  je     L14
  call   <putchar@plt>
  mov    $0x2,%ebx
  nop
L40:
  movsbl -0x1(%rbp,%rbx,1),%edi
  test   %dil,%dil
  je     L14
  call   <putchar@plt>
  test   $0x3,%bl
  jne    L34
  cmpb   $0x0,0x0(%rbp,%rbx,1)
  jne    L36
L14:
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  ret
  nopw   0x0(%rax,%rax,1)
L36:
  mov    $0x20,%edi
  call   <putchar@plt>
L34:
  add    $0x1,%rbx
  jmp    L40
```

assistant: ```c
void show_bstr(const char *str) {
  int i = 0;
  while (str[i]) {
    putchar(str[i]);
    if (++i % 4 == 0 && str[i]) {
      putchar(' ');
    }
  }
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<memccpy>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x28(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    %edx,-0x34(%rbp)
  mov    %rcx,-0x40(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,-0x18(%rbp)
  mov    -0x30(%rbp),%rax
  mov    %rax,-0x10(%rbp)
  movq   $0x0,-0x8(%rbp)
  jmp    L20
L33:
  mov    -0x10(%rbp),%rdx
  lea    0x1(%rdx),%rax
  mov    %rax,-0x10(%rbp)
  mov    -0x18(%rbp),%rax
  lea    0x1(%rax),%rcx
  mov    %rcx,-0x18(%rbp)
  movzbl (%rdx),%edx
  mov    %dl,(%rax)
  mov    -0x10(%rbp),%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  lea    -0x1(%rax),%edx
  mov    -0x34(%rbp),%eax
  movzbl %al,%eax
  cmp    %eax,%edx
  jne    L24
  mov    -0x18(%rbp),%rax
  jmp    L15
L24:
  addq   $0x1,-0x8(%rbp)
L20:
  mov    -0x8(%rbp),%rax
  cmp    -0x40(%rbp),%rax
  jb     L33
  mov    $0x0,%eax
L15:
  pop    %rbp
  ret
```

assistant: ```c
void *memccpy(void *restrict s1, const void *restrict s2, int c, size_t n) {
  unsigned char *restrict dstptr = (unsigned char *restrict)s1;
  const unsigned char *restrict srcptr = (const unsigned char *restrict)s2;
  for (size_t i = 0; i < n; i++) {
    *dstptr++ = *srcptr++;
    if (*srcptr - 1 == (unsigned char)c) {
      return (void *)dstptr;
    }
  }
  return NULL;
}
```
user: 这段汇编代码用C语言表示是什么样的：

```asm
<memccpy>:
  endbr64
  mov    %rdi,%rax
  test   %rcx,%rcx
  je     L4
  add    %rdi,%rcx
  movzbl %dl,%edx
L24:
  add    $0x1,%rsi
  add    $0x1,%rax
  movzbl -0x1(%rsi),%edi
  mov    %dil,-0x1(%rax)
  movzbl (%rsi),%edi
  sub    $0x1,%edi
  cmp    %edx,%edi
  je     L26
  cmp    %rax,%rcx
  jne    L24
  mov    $0x0,%eax
  ret
L4:
  mov    $0x0,%eax
L26:
  ret
```

assistant: ```c
void *memccpy(void *restrict s1, const void *restrict s2, int c, size_t n) {
  unsigned char *restrict dstptr = (unsigned char *restrict)s1;
  const unsigned char *restrict srcptr = (const unsigned char *restrict)s2;
  for (size_t i = 0; i < n; i++) {
    *dstptr++ = *srcptr++;
    if (*srcptr - 1 == (unsigned char)c) {
      return (void *)dstptr;
    }
  }
  return NULL;
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<memccpy>:
  endbr64
  mov    %rdi,%rax
  test   %rcx,%rcx
  je     L24
  movzbl (%rsi),%r8d
  movzbl %dl,%edx
  add    %rdi,%rcx
  jmp    L35
  nopl   0x0(%rax,%rax,1)
L36:
  cmp    %rax,%rcx
  je     L24
L35:
  movzbl 0x1(%rsi),%edi
  mov    %r8b,(%rax)
  add    $0x1,%rsi
  add    $0x1,%rax
  mov    %edi,%r8d
  sub    $0x1,%edi
  cmp    %edi,%edx
  jne    L36
  ret
  nop
L24:
  xor    %eax,%eax
  ret
```

assistant: ```c
void *memccpy(void *restrict s1, const void *restrict s2, int c, size_t n) {
  unsigned char *restrict dstptr = (unsigned char *restrict)s1;
  const unsigned char *restrict srcptr = (const unsigned char *restrict)s2;
  for (size_t i = 0; i < n; i++) {
    *dstptr++ = *srcptr++;
    if (*srcptr - 1 == (unsigned char)c) {
      return (void *)dstptr;
    }
  }
  return NULL;
}
```
user: 请将以下的汇编代码转换成C语言代码：

```asm
<memccpy>:
  endbr64
  mov    %rdi,%rax
  test   %rcx,%rcx
  je     L35
  movzbl (%rsi),%r8d
  movzbl %dl,%edx
  add    %rdi,%rcx
  jmp    L5
  nopl   0x0(%rax,%rax,1)
L6:
  cmp    %rcx,%rax
  je     L35
L5:
  movzbl 0x1(%rsi),%edi
  mov    %r8b,(%rax)
  add    $0x1,%rsi
  add    $0x1,%rax
  mov    %edi,%r8d
  sub    $0x1,%edi
  cmp    %edi,%edx
  jne    L6
  ret
  nop
L35:
  xor    %eax,%eax
  ret
```

assistant: ```c
void *memccpy(void *restrict s1, const void *restrict s2, int c, size_t n) {
  unsigned char *restrict dstptr = (unsigned char *restrict)s1;
  const unsigned char *restrict srcptr = (const unsigned char *restrict)s2;
  for (size_t i = 0; i < n; i++) {
    *dstptr++ = *srcptr++;
    if (*srcptr - 1 == (unsigned char)c) {
      return (void *)dstptr;
    }
  }
  return NULL;
}
```