ylfeng/ReF-Decompile-dataset huggingface dataset:
user: 请从给定的汇编指令推导出C源代码：

```asm
<debug_fmt>:
  endbr64
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    %rdi,%rbx
  mov    %rdi,%rsi
  mov    $0x0,%ebp
  mov    %ebp,%edi
  call   <va_start@plt>
  mov    %ebp,%ecx
  mov    %rbx,%rdx
  mov    $0x1ff,%esi
  lea    D11(%rip),%rbx
  mov    %rbx,%rdi
  call   <vsnprintf@plt>
  mov    %ebp,%edi
  call   <va_end@plt>
  movb   $0x0,D13(%rip)
  mov    %rbx,%rax
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  ret
```

assistant: ```c
char *debug_fmt(const char *format, ...) {
  va_list argp;
  static char str[512];
  int maxlen = sizeof(str) - 1;
  va_start(argp, format);
  vsnprintf(str, maxlen, format, argp);
  va_end(argp);
  str[maxlen] = '\0';
  return (str);
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<debug_fmt>:
  endbr64
  push   %r12
  mov    %rdi,%rsi
  mov    %rdi,%r12
  push   %rbp
  xor    %ebp,%ebp
  mov    %ebp,%edi
  sub    $0x8,%rsp
  call   <va_start@plt>
  mov    %r12,%rdx
  mov    %ebp,%ecx
  mov    $0x1ff,%esi
  lea    D6(%rip),%r12
  mov    %r12,%rdi
  call   <vsnprintf@plt>
  mov    %ebp,%edi
  call   <va_end@plt>
  movb   $0x0,D10(%rip)
  add    $0x8,%rsp
  mov    %r12,%rax
  pop    %rbp
  pop    %r12
  ret
```

assistant: ```c
char *debug_fmt(const char *format, ...) {
  va_list argp;
  static char str[512];
  int maxlen = sizeof(str) - 1;
  va_start(argp, format);
  vsnprintf(str, maxlen, format, argp);
  va_end(argp);
  str[maxlen] = '\0';
  return (str);
}
```
user: What would the C source look like for the assembly code provided here?

```asm
<debug_fmt>:
  endbr64
  push   %r12
  mov    %rdi,%rsi
  mov    %rdi,%r12
  push   %rbp
  xor    %ebp,%ebp
  mov    %ebp,%edi
  sub    $0x8,%rsp
  call   <va_start@plt>
  mov    %r12,%rdx
  mov    %ebp,%ecx
  mov    $0x1ff,%esi
  lea    D13(%rip),%r12
  mov    %r12,%rdi
  call   <vsnprintf@plt>
  mov    %ebp,%edi
  call   <va_end@plt>
  movb   $0x0,D16(%rip)
  add    $0x8,%rsp
  mov    %r12,%rax
  pop    %rbp
  pop    %r12
  ret
```

assistant: ```c
char *debug_fmt(const char *format, ...) {
  va_list argp;
  static char str[512];
  int maxlen = sizeof(str) - 1;
  va_start(argp, format);
  vsnprintf(str, maxlen, format, argp);
  va_end(argp);
  str[maxlen] = '\0';
  return (str);
}
```
user: 这段汇编代码用C语言表示是什么样的？

```asm
<scan_bus>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x460,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movl   $0x0,-0x454(%rbp)
  movl   $0x0,-0x450(%rbp)
  movl   $0x0,-0x44c(%rbp)
  movl   $0x0,-0x448(%rbp)
  lea    D25(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  mov    -0x454(%rbp),%eax
  mov    %eax,-0x45c(%rbp)
  jmp    L44
L78:
  mov    -0x450(%rbp),%eax
  mov    %eax,-0x458(%rbp)
  jmp    L73
L79:
  mov    -0x458(%rbp),%ecx
  mov    -0x45c(%rbp),%edx
  lea    -0x410(%rbp),%rax
  mov    %ecx,%r8d
  mov    %edx,%ecx
  lea    D46(%rip),%rdx
  mov    $0x400,%esi
  mov    %rax,%rdi
  call   <snprintf@plt>
  lea    -0x410(%rbp),%rax
  mov    %rax,%rdi
  call   <scsi_open@plt>
  test   %rax,%rax
  jne    L61
  lea    -0x43e(%rbp),%rdx
  lea    -0x430(%rbp),%rcx
  lea    -0x439(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <inquiry@plt>
  mov    %eax,-0x444(%rbp)
  cmpl   $0x0,-0x444(%rbp)
  js     L85
  andl   $0x1f,-0x444(%rbp)
  cmpl   $0x5,-0x444(%rbp)
  jne    L52
  lea    D32(%rip),%rax
  jmp    L76
L52:
  lea    D29(%rip),%rax
L76:
  lea    -0x43e(%rbp),%rdi
  lea    -0x430(%rbp),%rcx
  lea    -0x439(%rbp),%rdx
  lea    -0x410(%rbp),%rsi
  mov    %rax,%r9
  mov    %rdi,%r8
  lea    D6(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
L85:
  mov    $0x0,%eax
  call   <scsi_close@plt>
L61:
  addl   $0x1,-0x458(%rbp)
L73:
  mov    -0x458(%rbp),%eax
  cmp    -0x448(%rbp),%eax
  jle    L79
  addl   $0x1,-0x45c(%rbp)
L44:
  mov    -0x45c(%rbp),%eax
  cmp    -0x44c(%rbp),%eax
  jle    L78
  nop
  mov    -0x8(%rbp),%rax
  sub    %fs:0x28,%rax
  je     L5
  call   <__stack_chk_fail@plt>
L5:
  leave
  ret
```

tool_calls: name: unpack_data
arguments: data_tag: D25
type_infered: string
name: unpack_data
arguments: data_tag: D46
type_infered: string
name: unpack_data
arguments: data_tag: D32
type_infered: string
name: unpack_data
arguments: data_tag: D29
type_infered: string
name: unpack_data
arguments: data_tag: D6
type_infered: string

tool: D25: Device                   Manufacturer  Model              Revision
-----------------------  ------------- ------------------ --------

tool: D46: /dev/scsi/sc%dd%dl0

tool: D32: [CD-ROM]

tool: 

tool: D6: %-23s  %-13s %-18s %-8s %s


assistant: ```c
void scan_bus() {
  char vendor[9], model[17], rev[5];
  char d[1024];
  int bus, dev, type;
  int firstbus, lastbus;
  int firstdev, lastdev;
  firstbus = 0;
  firstdev = 0;
  lastbus = 0;
  lastdev = 0;
  printf("Device                   Manufacturer  Model              Revision\n"
         "-----------------------  ------------- ------------------ --------\n");
  for (bus = firstbus; bus <= lastbus; bus++) {
    for (dev = firstdev; dev <= lastdev; dev++) {
      snprintf(d, 1024, "/dev/scsi/sc%dd%dl0", bus, dev);
      if (scsi_open(d) == 0) {
        if ((type = inquiry(vendor, model, rev)) >= 0) {
          type = type & 0x1f;
          printf("%-23s  %-13s %-18s %-8s %s\n", d, vendor, model, rev, (type == 0x5 ? "[CD-ROM]" : ""));
        }
        scsi_close();
      }
    }
  }
}
```
user: What would the C source look like for the assembly code provided here:

```asm
<scan_bus>:
  endbr64
  push   %rbx
  sub    $0x440,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x438(%rsp)
  xor    %eax,%eax
  lea    D16(%rip),%rdi
  call   <puts@plt>
  lea    0x30(%rsp),%rbx
  mov    $0x0,%r8d
  mov    $0x0,%ecx
  lea    D49(%rip),%rdx
  mov    $0x400,%esi
  mov    %rbx,%rdi
  call   <snprintf@plt>
  mov    %rbx,%rdi
  call   <scsi_open@plt>
  test   %rax,%rax
  je     L6
L28:
  mov    0x438(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L18
  add    $0x440,%rsp
  pop    %rbx
  ret
L6:
  lea    0x2(%rsp),%rdx
  lea    0x10(%rsp),%rsi
  lea    0x7(%rsp),%rdi
  call   <inquiry@plt>
  test   %eax,%eax
  js     L27
  and    $0x1f,%eax
  cmp    $0x5,%eax
  lea    D12(%rip),%r9
  lea    D35(%rip),%rax
  cmovne %rax,%r9
  lea    0x10(%rsp),%rcx
  lea    0x7(%rsp),%rdx
  mov    %rbx,%rsi
  lea    0x2(%rsp),%r8
  lea    D39(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
L27:
  mov    $0x0,%eax
  call   <scsi_close@plt>
  jmp    L28
L18:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: read_data
arguments: label: D16
data_type: string
name: read_data
arguments: label: D49
data_type: string
name: read_data
arguments: label: D12
data_type: string
name: read_data
arguments: label: D35
data_type: string
name: read_data
arguments: label: D39
data_type: string

tool: D16: Device                   Manufacturer  Model              Revision
-----------------------  ------------- ------------------ --------

tool: D49: /dev/scsi/sc%dd%dl0

tool: D12: [CD-ROM]

tool: 

tool: D39: %-23s  %-13s %-18s %-8s %s


assistant: ```c
void scan_bus() {
  char vendor[9], model[17], rev[5];
  char d[1024];
  int bus, dev, type;
  int firstbus, lastbus;
  int firstdev, lastdev;
  firstbus = 0;
  firstdev = 0;
  lastbus = 0;
  lastdev = 0;
  printf("Device                   Manufacturer  Model              Revision\n"
         "-----------------------  ------------- ------------------ --------\n");
  for (bus = firstbus; bus <= lastbus; bus++) {
    for (dev = firstdev; dev <= lastdev; dev++) {
      snprintf(d, 1024, "/dev/scsi/sc%dd%dl0", bus, dev);
      if (scsi_open(d) == 0) {
        if ((type = inquiry(vendor, model, rev)) >= 0) {
          type = type & 0x1f;
          printf("%-23s  %-13s %-18s %-8s %s\n", d, vendor, model, rev, (type == 0x5 ? "[CD-ROM]" : ""));
        }
        scsi_close();
      }
    }
  }
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<scan_bus>:
  endbr64
  push   %r13
  lea    D7(%rip),%rdi
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x448,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x438(%rsp)
  xor    %eax,%eax
  lea    0x30(%rsp),%rbp
  call   <puts@plt>
  xor    %r8d,%r8d
  xor    %ecx,%ecx
  mov    %rbp,%rdi
  lea    D18(%rip),%rdx
  mov    $0x400,%esi
  call   <snprintf@plt>
  mov    %rbp,%rdi
  call   <scsi_open@plt>
  test   %rax,%rax
  jne    L21
  lea    0x2(%rsp),%rbx
  lea    0x10(%rsp),%r13
  lea    0x7(%rsp),%r12
  mov    %rbx,%rdx
  mov    %r13,%rsi
  mov    %r12,%rdi
  call   <inquiry@plt>
  test   %eax,%eax
  js     L28
  and    $0x1f,%eax
  lea    D36(%rip),%r9
  mov    %rbx,%r8
  mov    %r13,%rcx
  cmp    $0x5,%eax
  lea    D8(%rip),%rax
  mov    %r12,%rdx
  mov    %rbp,%rsi
  cmovne %rax,%r9
  lea    D16(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
L28:
  xor    %eax,%eax
  call   <scsi_close@plt>
L21:
  mov    0x438(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L20
  add    $0x448,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L20:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: parse_data
arguments: data_label: D7
datatype: string
name: parse_data
arguments: data_label: D18
datatype: string
name: parse_data
arguments: data_label: D36
datatype: string
name: parse_data
arguments: data_label: D8
datatype: string
name: parse_data
arguments: data_label: D16
datatype: string

tool: D7: Device                   Manufacturer  Model              Revision
-----------------------  ------------- ------------------ --------

tool: D18: /dev/scsi/sc%dd%dl0

tool: D36: [CD-ROM]

tool: 

tool: D16: %-23s  %-13s %-18s %-8s %s


assistant: ```c
void scan_bus() {
  char vendor[9], model[17], rev[5];
  char d[1024];
  int bus, dev, type;
  int firstbus, lastbus;
  int firstdev, lastdev;
  firstbus = 0;
  firstdev = 0;
  lastbus = 0;
  lastdev = 0;
  printf("Device                   Manufacturer  Model              Revision\n"
         "-----------------------  ------------- ------------------ --------\n");
  for (bus = firstbus; bus <= lastbus; bus++) {
    for (dev = firstdev; dev <= lastdev; dev++) {
      snprintf(d, 1024, "/dev/scsi/sc%dd%dl0", bus, dev);
      if (scsi_open(d) == 0) {
        if ((type = inquiry(vendor, model, rev)) >= 0) {
          type = type & 0x1f;
          printf("%-23s  %-13s %-18s %-8s %s\n", d, vendor, model, rev, (type == 0x5 ? "[CD-ROM]" : ""));
        }
        scsi_close();
      }
    }
  }
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<scan_bus>:
  endbr64
  push   %r13
  lea    D16(%rip),%rdi
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x448,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x438(%rsp)
  xor    %eax,%eax
  lea    0x30(%rsp),%rbp
  call   <puts@plt>
  xor    %r8d,%r8d
  xor    %ecx,%ecx
  mov    %rbp,%rdi
  lea    D31(%rip),%rdx
  mov    $0x400,%esi
  call   <snprintf@plt>
  mov    %rbp,%rdi
  call   <scsi_open@plt>
  test   %rax,%rax
  jne    L12
  lea    0x2(%rsp),%rbx
  lea    0x10(%rsp),%r13
  lea    0x7(%rsp),%r12
  mov    %rbx,%rdx
  mov    %r13,%rsi
  mov    %r12,%rdi
  call   <inquiry@plt>
  test   %eax,%eax
  js     L13
  and    $0x1f,%eax
  lea    D25(%rip),%r9
  mov    %rbx,%r8
  mov    %r13,%rcx
  cmp    $0x5,%eax
  lea    D15(%rip),%rax
  mov    %r12,%rdx
  mov    %rbp,%rsi
  cmovne %rax,%r9
  lea    D46(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
L13:
  xor    %eax,%eax
  call   <scsi_close@plt>
L12:
  mov    0x438(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L18
  add    $0x448,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L18:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: read_data
arguments: data_label: D16
data_type: string
name: read_data
arguments: data_label: D31
data_type: string
name: read_data
arguments: data_label: D25
data_type: string
name: read_data
arguments: data_label: D15
data_type: string
name: read_data
arguments: data_label: D46
data_type: string

tool: D16: Device                   Manufacturer  Model              Revision
-----------------------  ------------- ------------------ --------

tool: D31: /dev/scsi/sc%dd%dl0

tool: D25: [CD-ROM]

tool: 

tool: D46: %-23s  %-13s %-18s %-8s %s


assistant: ```c
void scan_bus() {
  char vendor[9], model[17], rev[5];
  char d[1024];
  int bus, dev, type;
  int firstbus, lastbus;
  int firstdev, lastdev;
  firstbus = 0;
  firstdev = 0;
  lastbus = 0;
  lastdev = 0;
  printf("Device                   Manufacturer  Model              Revision\n"
         "-----------------------  ------------- ------------------ --------\n");
  for (bus = firstbus; bus <= lastbus; bus++) {
    for (dev = firstdev; dev <= lastdev; dev++) {
      snprintf(d, 1024, "/dev/scsi/sc%dd%dl0", bus, dev);
      if (scsi_open(d) == 0) {
        if ((type = inquiry(vendor, model, rev)) >= 0) {
          type = type & 0x1f;
          printf("%-23s  %-13s %-18s %-8s %s\n", d, vendor, model, rev, (type == 0x5 ? "[CD-ROM]" : ""));
        }
        scsi_close();
      }
    }
  }
}
```
user: What is the c source code of the assembly code below:

```asm
<unboxUnsigned>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x10,%rsp
  mov    %rdi,-0x8(%rbp)
  mov    -0x8(%rbp),%rax
  mov    %rax,%rdi
  call   <hExtractTag@plt>
  test   %eax,%eax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  mov    -0x8(%rbp),%rax
  mov    0x4(%rax),%eax
  leave
  ret
```

assistant: ```c
uint32_t unboxUnsigned(uint32_t *hptr) {
  assert(hExtractTag(hptr) == 0x00000000);
  return ((*((hptr) + 1)));
}
```
user: What would the C source look like for the assembly code provided here:

```asm
<unboxUnsigned>:
  endbr64
  push   %rbx
  mov    %rdi,%rbx
  call   <hExtractTag@plt>
  test   %eax,%eax
  sete   %dil
  movzbl %dil,%edi
  call   <assert@plt>
  mov    0x4(%rbx),%eax
  pop    %rbx
  ret
```

assistant: ```c
uint32_t unboxUnsigned(uint32_t *hptr) {
  assert(hExtractTag(hptr) == 0x00000000);
  return ((*((hptr) + 1)));
}
```
user: Translate the below assembly code into C programming language:

```asm
<unboxUnsigned>:
  endbr64
  push   %rbx
  mov    %rdi,%rbx
  call   <hExtractTag@plt>
  xor    %edi,%edi
  test   %eax,%eax
  sete   %dil
  call   <assert@plt>
  mov    0x4(%rbx),%eax
  pop    %rbx
  ret
```

assistant: ```c
uint32_t unboxUnsigned(uint32_t *hptr) {
  assert(hExtractTag(hptr) == 0x00000000);
  return ((*((hptr) + 1)));
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<unboxUnsigned>:
  endbr64
  push   %rbx
  mov    %rdi,%rbx
  call   <hExtractTag@plt>
  xor    %edi,%edi
  test   %eax,%eax
  sete   %dil
  call   <assert@plt>
  mov    0x4(%rbx),%eax
  pop    %rbx
  ret
```

assistant: ```c
uint32_t unboxUnsigned(uint32_t *hptr) {
  assert(hExtractTag(hptr) == 0x00000000);
  return ((*((hptr) + 1)));
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<db_current_trial_balance_entity_report_sql>:
  endbr64
  lea    D8(%rip),%rax
  ret
```

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

tool: D8: SELECT `A/C No.`, Description, Balance FROM current_trial_balance  WHERE Entity = %s

assistant: ```c
const char *db_current_trial_balance_entity_report_sql(void) {
  static const char *query = "SELECT `A/C No.`, Description, Balance FROM current_trial_balance"
                             "  WHERE Entity = %s";
  return query;
}
```
user: 请从给定的汇编指令推导出C源代码：

```asm
<db_current_trial_balance_entity_report_sql>:
  endbr64
  lea    D3(%rip),%rax
  ret
```

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

tool: D3: SELECT `A/C No.`, Description, Balance FROM current_trial_balance  WHERE Entity = %s

assistant: ```c
const char *db_current_trial_balance_entity_report_sql(void) {
  static const char *query = "SELECT `A/C No.`, Description, Balance FROM current_trial_balance"
                             "  WHERE Entity = %s";
  return query;
}
```
user: 这段汇编代码用C语言表示是什么样的:

```asm
<db_current_trial_balance_entity_report_sql>:
  endbr64
  lea    D7(%rip),%rax
  ret
```

tool_calls: name: retrieve_data
arguments: data_label: D7
type: string

tool: D7: SELECT `A/C No.`, Description, Balance FROM current_trial_balance  WHERE Entity = %s

assistant: ```c
const char *db_current_trial_balance_entity_report_sql(void) {
  static const char *query = "SELECT `A/C No.`, Description, Balance FROM current_trial_balance"
                             "  WHERE Entity = %s";
  return query;
}
```
user: What is the c source code of the assembly code below:

```asm
<_fstat>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %edi,-0x4(%rbp)
  mov    %rsi,-0x10(%rbp)
  mov    D4(%rip),%rax
  mov    (%rax),%eax
  cmp    %eax,-0x4(%rbp)
  jne    L0
  mov    D5(%rip),%rax
  mov    (%rax),%edx
  mov    -0x10(%rbp),%rax
  mov    %edx,(%rax)
  mov    $0x0,%eax
  jmp    L4
L0:
  mov    D9(%rip),%rax
  mov    (%rax),%edx
  mov    D29(%rip),%rax
  mov    %edx,(%rax)
  mov    $0xffffffff,%eax
L4:
  pop    %rbp
  ret
```

assistant: ```c
int _fstat(int file, struct stat *st) {
  if (STDOUT_FILENO == file) {
    st->st_mode = S_IFCHR;
    return 0;
  } else {
    errno = EBADF;
    return -1;
  }
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<_fstat>:
  endbr64
  mov    D16(%rip),%rax
  cmp    %edi,(%rax)
  jne    L6
  mov    D5(%rip),%rax
  mov    (%rax),%eax
  mov    %eax,(%rsi)
  mov    $0x0,%eax
  ret
L6:
  mov    D31(%rip),%rax
  mov    (%rax),%edx
  mov    D19(%rip),%rax
  mov    %edx,(%rax)
  mov    $0xffffffff,%eax
  ret
```

assistant: ```c
int _fstat(int file, struct stat *st) {
  if (STDOUT_FILENO == file) {
    st->st_mode = S_IFCHR;
    return 0;
  } else {
    errno = EBADF;
    return -1;
  }
}
```
user: Translate the below assembly code into C programming language:

```asm
<_fstat>:
  endbr64
  mov    D29(%rip),%rax
  cmp    %edi,(%rax)
  jne    L9
  mov    D28(%rip),%rax
  mov    (%rax),%eax
  mov    %eax,(%rsi)
  xor    %eax,%eax
  ret
  nopl   (%rax)
L9:
  mov    D24(%rip),%rax
  mov    (%rax),%edx
  mov    D0(%rip),%rax
  mov    %edx,(%rax)
  mov    $0xffffffff,%eax
  ret
```

assistant: ```c
int _fstat(int file, struct stat *st) {
  if (STDOUT_FILENO == file) {
    st->st_mode = S_IFCHR;
    return 0;
  } else {
    errno = EBADF;
    return -1;
  }
}
```
user: 下面的汇编指令对应的C源代码是什么：

```asm
<_fstat>:
  endbr64
  mov    D14(%rip),%rax
  cmp    %edi,(%rax)
  jne    L0
  mov    D25(%rip),%rax
  mov    (%rax),%eax
  mov    %eax,(%rsi)
  xor    %eax,%eax
  ret
  nopl   (%rax)
L0:
  mov    D13(%rip),%rax
  mov    (%rax),%edx
  mov    D24(%rip),%rax
  mov    %edx,(%rax)
  mov    $0xffffffff,%eax
  ret
```

assistant: ```c
int _fstat(int file, struct stat *st) {
  if (STDOUT_FILENO == file) {
    st->st_mode = S_IFCHR;
    return 0;
  } else {
    errno = EBADF;
    return -1;
  }
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<with_2d_array_cb>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %rdi,-0x38(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movl   $0x0,-0x2c(%rbp)
  jmp    L17
L31:
  movl   $0x0,-0x28(%rbp)
  jmp    L12
L38:
  mov    -0x28(%rbp),%eax
  lea    (%rax,%rax,1),%edx
  mov    -0x2c(%rbp),%eax
  add    %edx,%eax
  mov    %eax,%ecx
  mov    -0x28(%rbp),%eax
  movslq %eax,%rsi
  mov    -0x2c(%rbp),%eax
  movslq %eax,%rdx
  mov    %rdx,%rax
  shl    $0x3,%rax
  sub    %rdx,%rax
  add    %rbp,%rax
  add    %rsi,%rax
  sub    $0x20,%rax
  mov    %cl,(%rax)
  addl   $0x1,-0x28(%rbp)
L12:
  cmpl   $0x6,-0x28(%rbp)
  jle    L38
  addl   $0x1,-0x2c(%rbp)
L17:
  cmpl   $0x2,-0x2c(%rbp)
  jle    L31
  lea    -0x20(%rbp),%rax
  mov    -0x38(%rbp),%rdx
  mov    %rax,%rdi
  call   *%rdx
  movl   $0x0,-0x24(%rbp)
  movl   $0x0,-0x2c(%rbp)
  jmp    L56
L74:
  movl   $0x0,-0x28(%rbp)
  jmp    L80
L48:
  mov    -0x28(%rbp),%eax
  movslq %eax,%rcx
  mov    -0x2c(%rbp),%eax
  movslq %eax,%rdx
  mov    %rdx,%rax
  shl    $0x3,%rax
  sub    %rdx,%rax
  add    %rbp,%rax
  add    %rcx,%rax
  sub    $0x20,%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  mov    -0x2c(%rbp),%ecx
  mov    -0x28(%rbp),%edx
  add    %ecx,%edx
  add    %edx,%edx
  sub    %edx,%eax
  add    %eax,-0x24(%rbp)
  addl   $0x1,-0x28(%rbp)
L80:
  cmpl   $0x6,-0x28(%rbp)
  jle    L48
  addl   $0x1,-0x2c(%rbp)
L56:
  cmpl   $0x2,-0x2c(%rbp)
  jle    L74
  mov    -0x24(%rbp),%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L77
  call   <__stack_chk_fail@plt>
L77:
  leave
  ret
```

assistant: ```c
int with_2d_array_cb(void (*cb)(char c[3][7])) {
  char c[3][7];
  int i, j, r;
  for (i = 0; i < 3; i++) {
    for (j = 0; j < 7; j++) {
      c[i][j] = (i + (2 * j));
    }
  }
  cb(c);
  r = 0;
  for (i = 0; i < 3; i++) {
    for (j = 0; j < 7; j++) {
      r += (c[i][j] - ((2 * i) + (2 * j)));
    }
  }
  return r;
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<with_2d_array_cb>:
  endbr64
  push   %rbx
  sub    $0x20,%rsp
  mov    %rdi,%r8
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  mov    %rsp,%rbx
  mov    %rbx,%rdi
  mov    $0xe,%ecx
  mov    $0x0,%esi
L43:
  mov    %esi,%eax
  mov    %rdi,%rdx
L15:
  mov    %al,(%rdx)
  add    $0x2,%eax
  add    $0x1,%rdx
  cmp    %cl,%al
  jne    L15
  add    $0x1,%esi
  add    $0x7,%rdi
  add    $0x1,%ecx
  cmp    $0x3,%esi
  jne    L43
  mov    %rsp,%rdi
  call   *%r8
  mov    $0xe,%edi
  mov    $0x0,%esi
  mov    $0x0,%r8d
L23:
  lea    (%r8,%r8,1),%eax
  mov    %rbx,%rcx
L18:
  movsbl (%rcx),%edx
  sub    %eax,%edx
  add    %edx,%esi
  add    $0x1,%rcx
  add    $0x2,%eax
  cmp    %edi,%eax
  jne    L18
  add    $0x1,%r8d
  add    $0x7,%rbx
  add    $0x2,%edi
  cmp    $0x3,%r8d
  jne    L23
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L22
  mov    %esi,%eax
  add    $0x20,%rsp
  pop    %rbx
  ret
L22:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int with_2d_array_cb(void (*cb)(char c[3][7])) {
  char c[3][7];
  int i, j, r;
  for (i = 0; i < 3; i++) {
    for (j = 0; j < 7; j++) {
      c[i][j] = (i + (2 * j));
    }
  }
  cb(c);
  r = 0;
  for (i = 0; i < 3; i++) {
    for (j = 0; j < 7; j++) {
      r += (c[i][j] - ((2 * i) + (2 * j)));
    }
  }
  return r;
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<with_2d_array_cb>:
  endbr64
  push   %rbx
  mov    %rdi,%r8
  mov    $0xe,%ecx
  xor    %esi,%esi
  sub    $0x20,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  mov    %rsp,%r9
  mov    %r9,%rbx
  mov    %r9,%rdi
L35:
  mov    %esi,%eax
  mov    %rdi,%rdx
  nopl   0x0(%rax)
L41:
  mov    %al,(%rdx)
  add    $0x2,%eax
  add    $0x1,%rdx
  cmp    %cl,%al
  jne    L41
  add    $0x1,%esi
  add    $0x7,%rdi
  lea    0x1(%rax),%ecx
  cmp    $0x3,%esi
  jne    L35
  mov    %r9,%rdi
  call   *%r8
  mov    $0xe,%esi
  xor    %r8d,%r8d
  xor    %edi,%edi
L46:
  lea    (%rdi,%rdi,1),%eax
  mov    %rbx,%rcx
  nopw   0x0(%rax,%rax,1)
L38:
  movsbl (%rcx),%edx
  add    $0x1,%rcx
  sub    %eax,%edx
  add    $0x2,%eax
  add    %edx,%r8d
  cmp    %esi,%eax
  jne    L38
  add    $0x1,%edi
  add    $0x7,%rbx
  lea    0x2(%rax),%esi
  cmp    $0x3,%edi
  jne    L46
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L24
  add    $0x20,%rsp
  mov    %r8d,%eax
  pop    %rbx
  ret
L24:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int with_2d_array_cb(void (*cb)(char c[3][7])) {
  char c[3][7];
  int i, j, r;
  for (i = 0; i < 3; i++) {
    for (j = 0; j < 7; j++) {
      c[i][j] = (i + (2 * j));
    }
  }
  cb(c);
  r = 0;
  for (i = 0; i < 3; i++) {
    for (j = 0; j < 7; j++) {
      r += (c[i][j] - ((2 * i) + (2 * j)));
    }
  }
  return r;
}
```