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

```asm
<stage_cu>:
  endbr64
  sub    $0x8,%rsp
  mov    $0x0,%esi
  mov    $0x50001004,%edi
  call   <Xil_Out32@plt>
  mov    $0x7d080502,%esi
  mov    $0x50001000,%edi
  call   <Xil_Out32@plt>
  mov    $0x4,%esi
  mov    $0x50001004,%edi
  call   <Xil_Out32@plt>
  mov    $0xbf810000,%esi
  mov    $0x50001000,%edi
  call   <Xil_Out32@plt>
  mov    $0x0,%esi
  mov    $0x50002004,%edi
  call   <Xil_Out32@plt>
  mov    $0x1f,%esi
  mov    $0x50002008,%edi
  call   <Xil_Out32@plt>
  mov    $0x28,%esi
  mov    $0x5000200c,%edi
  call   <Xil_Out32@plt>
  mov    $0x11,%esi
  mov    $0x50002010,%edi
  call   <Xil_Out32@plt>
  mov    $0x25,%esi
  mov    $0x50002014,%edi
  call   <Xil_Out32@plt>
  mov    $0x1,%esi
  mov    $0x50002000,%edi
  call   <Xil_Out32@plt>
  mov    $0x10,%esi
  mov    $0x50002004,%edi
  call   <Xil_Out32@plt>
  mov    $0x23,%esi
  mov    $0x50002008,%edi
  call   <Xil_Out32@plt>
  mov    $0x1b,%esi
  mov    $0x5000200c,%edi
  call   <Xil_Out32@plt>
  mov    $0xe,%esi
  mov    $0x50002010,%edi
  call   <Xil_Out32@plt>
  mov    $0x26,%esi
  mov    $0x50002014,%edi
  call   <Xil_Out32@plt>
  mov    $0x1,%esi
  mov    $0x50002000,%edi
  call   <Xil_Out32@plt>
  mov    $0x20,%esi
  mov    $0x50002004,%edi
  call   <Xil_Out32@plt>
  mov    $0x2e,%esi
  mov    $0x50002008,%edi
  call   <Xil_Out32@plt>
  mov    $0x30,%esi
  mov    $0x5000200c,%edi
  call   <Xil_Out32@plt>
  mov    $0x0,%esi
  mov    $0x50002010,%edi
  call   <Xil_Out32@plt>
  mov    $0x0,%esi
  mov    $0x50002014,%edi
  call   <Xil_Out32@plt>
  mov    $0x1,%esi
  mov    $0x50002000,%edi
  call   <Xil_Out32@plt>
  add    $0x8,%rsp
  ret
```

assistant: ```c
void stage_cu() {
  Xil_Out32(0x50001004, 0);
  Xil_Out32(0x50001000, 0x7D080502);
  Xil_Out32(0x50001004, 4);
  Xil_Out32(0x50001000, 0xBF810000);
  Xil_Out32(0x50002004, 0);
  Xil_Out32(0x50002008, 0x1F);
  Xil_Out32(0x5000200C, 0x28);
  Xil_Out32(0x50002010, 0x11);
  Xil_Out32(0x50002014, 0x25);
  Xil_Out32(0x50002000, 1);
  Xil_Out32(0x50002004, 16);
  Xil_Out32(0x50002008, 0x23);
  Xil_Out32(0x5000200C, 0x1B);
  Xil_Out32(0x50002010, 0xE);
  Xil_Out32(0x50002014, 0x26);
  Xil_Out32(0x50002000, 1);
  Xil_Out32(0x50002004, 32);
  Xil_Out32(0x50002008, 0x2E);
  Xil_Out32(0x5000200C, 0x30);
  Xil_Out32(0x50002010, 0x0);
  Xil_Out32(0x50002014, 0x0);
  Xil_Out32(0x50002000, 1);
}
```
user: What is the c source code of the assembly code below:

```asm
<stage_cu>:
  endbr64
  sub    $0x8,%rsp
  xor    %esi,%esi
  mov    $0x50001004,%edi
  call   <Xil_Out32@plt>
  mov    $0x7d080502,%esi
  mov    $0x50001000,%edi
  call   <Xil_Out32@plt>
  mov    $0x4,%esi
  mov    $0x50001004,%edi
  call   <Xil_Out32@plt>
  mov    $0xbf810000,%esi
  mov    $0x50001000,%edi
  call   <Xil_Out32@plt>
  xor    %esi,%esi
  mov    $0x50002004,%edi
  call   <Xil_Out32@plt>
  mov    $0x1f,%esi
  mov    $0x50002008,%edi
  call   <Xil_Out32@plt>
  mov    $0x28,%esi
  mov    $0x5000200c,%edi
  call   <Xil_Out32@plt>
  mov    $0x11,%esi
  mov    $0x50002010,%edi
  call   <Xil_Out32@plt>
  mov    $0x25,%esi
  mov    $0x50002014,%edi
  call   <Xil_Out32@plt>
  mov    $0x1,%esi
  mov    $0x50002000,%edi
  call   <Xil_Out32@plt>
  mov    $0x10,%esi
  mov    $0x50002004,%edi
  call   <Xil_Out32@plt>
  mov    $0x23,%esi
  mov    $0x50002008,%edi
  call   <Xil_Out32@plt>
  mov    $0x1b,%esi
  mov    $0x5000200c,%edi
  call   <Xil_Out32@plt>
  mov    $0xe,%esi
  mov    $0x50002010,%edi
  call   <Xil_Out32@plt>
  mov    $0x26,%esi
  mov    $0x50002014,%edi
  call   <Xil_Out32@plt>
  mov    $0x1,%esi
  mov    $0x50002000,%edi
  call   <Xil_Out32@plt>
  mov    $0x20,%esi
  mov    $0x50002004,%edi
  call   <Xil_Out32@plt>
  mov    $0x2e,%esi
  mov    $0x50002008,%edi
  call   <Xil_Out32@plt>
  mov    $0x30,%esi
  mov    $0x5000200c,%edi
  call   <Xil_Out32@plt>
  xor    %esi,%esi
  mov    $0x50002010,%edi
  call   <Xil_Out32@plt>
  xor    %esi,%esi
  mov    $0x50002014,%edi
  call   <Xil_Out32@plt>
  mov    $0x1,%esi
  mov    $0x50002000,%edi
  add    $0x8,%rsp
  jmp    1050 <Xil_Out32@plt>
```

assistant: ```c
void stage_cu() {
  Xil_Out32(0x50001004, 0);
  Xil_Out32(0x50001000, 0x7D080502);
  Xil_Out32(0x50001004, 4);
  Xil_Out32(0x50001000, 0xBF810000);
  Xil_Out32(0x50002004, 0);
  Xil_Out32(0x50002008, 0x1F);
  Xil_Out32(0x5000200C, 0x28);
  Xil_Out32(0x50002010, 0x11);
  Xil_Out32(0x50002014, 0x25);
  Xil_Out32(0x50002000, 1);
  Xil_Out32(0x50002004, 16);
  Xil_Out32(0x50002008, 0x23);
  Xil_Out32(0x5000200C, 0x1B);
  Xil_Out32(0x50002010, 0xE);
  Xil_Out32(0x50002014, 0x26);
  Xil_Out32(0x50002000, 1);
  Xil_Out32(0x50002004, 32);
  Xil_Out32(0x50002008, 0x2E);
  Xil_Out32(0x5000200C, 0x30);
  Xil_Out32(0x50002010, 0x0);
  Xil_Out32(0x50002014, 0x0);
  Xil_Out32(0x50002000, 1);
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<stage_cu>:
  endbr64
  sub    $0x8,%rsp
  xor    %esi,%esi
  mov    $0x50001004,%edi
  call   <Xil_Out32@plt>
  mov    $0x7d080502,%esi
  mov    $0x50001000,%edi
  call   <Xil_Out32@plt>
  mov    $0x4,%esi
  mov    $0x50001004,%edi
  call   <Xil_Out32@plt>
  mov    $0xbf810000,%esi
  mov    $0x50001000,%edi
  call   <Xil_Out32@plt>
  xor    %esi,%esi
  mov    $0x50002004,%edi
  call   <Xil_Out32@plt>
  mov    $0x1f,%esi
  mov    $0x50002008,%edi
  call   <Xil_Out32@plt>
  mov    $0x28,%esi
  mov    $0x5000200c,%edi
  call   <Xil_Out32@plt>
  mov    $0x11,%esi
  mov    $0x50002010,%edi
  call   <Xil_Out32@plt>
  mov    $0x25,%esi
  mov    $0x50002014,%edi
  call   <Xil_Out32@plt>
  mov    $0x1,%esi
  mov    $0x50002000,%edi
  call   <Xil_Out32@plt>
  mov    $0x10,%esi
  mov    $0x50002004,%edi
  call   <Xil_Out32@plt>
  mov    $0x23,%esi
  mov    $0x50002008,%edi
  call   <Xil_Out32@plt>
  mov    $0x1b,%esi
  mov    $0x5000200c,%edi
  call   <Xil_Out32@plt>
  mov    $0xe,%esi
  mov    $0x50002010,%edi
  call   <Xil_Out32@plt>
  mov    $0x26,%esi
  mov    $0x50002014,%edi
  call   <Xil_Out32@plt>
  mov    $0x1,%esi
  mov    $0x50002000,%edi
  call   <Xil_Out32@plt>
  mov    $0x20,%esi
  mov    $0x50002004,%edi
  call   <Xil_Out32@plt>
  mov    $0x2e,%esi
  mov    $0x50002008,%edi
  call   <Xil_Out32@plt>
  mov    $0x30,%esi
  mov    $0x5000200c,%edi
  call   <Xil_Out32@plt>
  xor    %esi,%esi
  mov    $0x50002010,%edi
  call   <Xil_Out32@plt>
  xor    %esi,%esi
  mov    $0x50002014,%edi
  call   <Xil_Out32@plt>
  mov    $0x1,%esi
  mov    $0x50002000,%edi
  add    $0x8,%rsp
  jmp    1050 <Xil_Out32@plt>
```

assistant: ```c
void stage_cu() {
  Xil_Out32(0x50001004, 0);
  Xil_Out32(0x50001000, 0x7D080502);
  Xil_Out32(0x50001004, 4);
  Xil_Out32(0x50001000, 0xBF810000);
  Xil_Out32(0x50002004, 0);
  Xil_Out32(0x50002008, 0x1F);
  Xil_Out32(0x5000200C, 0x28);
  Xil_Out32(0x50002010, 0x11);
  Xil_Out32(0x50002014, 0x25);
  Xil_Out32(0x50002000, 1);
  Xil_Out32(0x50002004, 16);
  Xil_Out32(0x50002008, 0x23);
  Xil_Out32(0x5000200C, 0x1B);
  Xil_Out32(0x50002010, 0xE);
  Xil_Out32(0x50002014, 0x26);
  Xil_Out32(0x50002000, 1);
  Xil_Out32(0x50002004, 32);
  Xil_Out32(0x50002008, 0x2E);
  Xil_Out32(0x5000200C, 0x30);
  Xil_Out32(0x50002010, 0x0);
  Xil_Out32(0x50002014, 0x0);
  Xil_Out32(0x50002000, 1);
}
```
user: 这段汇编代码用C语言表示是什么样的:

```asm
<crc>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x8(%rbp)
  mov    %rsi,-0x10(%rbp)
  mov    %rdx,-0x18(%rbp)
  mov    %rcx,-0x20(%rbp)
  mov    -0x20(%rbp),%rax
  mov    %rax,%rdi
  call   <bigint_load_zeros@plt>
  mov    -0x18(%rbp),%rax
  shl    $0x3,%eax
  mov    %eax,%ecx
  mov    -0x20(%rbp),%rdx
  mov    -0x10(%rbp),%rsi
  mov    -0x8(%rbp),%rax
  mov    %rdx,%r8
  mov    $0x0,%edx
  mov    %rax,%rdi
  call   <crc_bits@plt>
  nop
  leave
  ret
```

assistant: ```c
void crc(const struct crc_config *crc, const void *msg, size_t len, struct bigint *checksum) {
  bigint_load_zeros(checksum);
  crc_bits(crc, msg, 0, 8 * len, checksum);
}
```
user: What would the C source look like for the assembly code provided here?

```asm
<crc>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    %rdi,%r12
  mov    %rsi,%r13
  mov    %rdx,%rbx
  mov    %rcx,%rbp
  mov    %rcx,%rdi
  call   <bigint_load_zeros@plt>
  lea    0x0(,%rbx,8),%ecx
  mov    %rbp,%r8
  mov    $0x0,%edx
  mov    %r13,%rsi
  mov    %r12,%rdi
  call   <crc_bits@plt>
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
```

assistant: ```c
void crc(const struct crc_config *crc, const void *msg, size_t len, struct bigint *checksum) {
  bigint_load_zeros(checksum);
  crc_bits(crc, msg, 0, 8 * len, checksum);
}
```
user: 请从给定的汇编指令推导出C源代码：

```asm
<crc>:
  endbr64
  push   %r13
  mov    %rsi,%r13
  push   %r12
  mov    %rdi,%r12
  mov    %rcx,%rdi
  push   %rbp
  mov    %rcx,%rbp
  push   %rbx
  mov    %rdx,%rbx
  sub    $0x8,%rsp
  call   <bigint_load_zeros@plt>
  add    $0x8,%rsp
  mov    %rbp,%r8
  mov    %r13,%rsi
  lea    0x0(,%rbx,8),%ecx
  mov    %r12,%rdi
  pop    %rbx
  xor    %edx,%edx
  pop    %rbp
  pop    %r12
  pop    %r13
  jmp    1060 <crc_bits@plt>
```

assistant: ```c
void crc(const struct crc_config *crc, const void *msg, size_t len, struct bigint *checksum) {
  bigint_load_zeros(checksum);
  crc_bits(crc, msg, 0, 8 * len, checksum);
}
```
user: What would the C source look like for the assembly code provided here:

```asm
<crc>:
  endbr64
  push   %r13
  mov    %rsi,%r13
  push   %r12
  mov    %rdi,%r12
  mov    %rcx,%rdi
  push   %rbp
  mov    %rcx,%rbp
  push   %rbx
  mov    %rdx,%rbx
  sub    $0x8,%rsp
  call   <bigint_load_zeros@plt>
  add    $0x8,%rsp
  mov    %rbp,%r8
  mov    %r13,%rsi
  lea    0x0(,%rbx,8),%ecx
  mov    %r12,%rdi
  pop    %rbx
  xor    %edx,%edx
  pop    %rbp
  pop    %r12
  pop    %r13
  jmp    1060 <crc_bits@plt>
```

assistant: ```c
void crc(const struct crc_config *crc, const void *msg, size_t len, struct bigint *checksum) {
  bigint_load_zeros(checksum);
  crc_bits(crc, msg, 0, 8 * len, checksum);
}
```
user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<luhn>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%rbx
  call   <strlen@plt>
  mov    %eax,%edi
  call   <malloc@plt>
  mov    %rax,%r12
  movzbl (%rbx),%edi
  test   %dil,%dil
  je     L107
  mov    $0x0,%ebp
  jmp    L6
L24:
  movsbl (%rbx),%edi
  call   <isspace@plt>
  test   %rax,%rax
  jne    L45
  movzbl (%rbx),%edx
  movslq %ebp,%rax
  mov    %dl,(%r12,%rax,1)
  lea    0x1(%rbp),%ebp
L45:
  add    $0x1,%rbx
  movzbl (%rbx),%edi
  test   %dil,%dil
  je     L101
L6:
  movsbl %dil,%edi
  call   <isdigit@plt>
  test   %rax,%rax
  jne    L24
  movsbl (%rbx),%edi
  call   <isspace@plt>
  test   %rax,%rax
  jne    L24
  mov    %r12,%rdi
  call   <free@plt>
  mov    $0x0,%eax
  jmp    L74
L101:
  movslq %ebp,%rax
  movb   $0x0,(%r12,%rax,1)
  lea    -0x1(%rbp),%edx
  movslq %edx,%rdx
  mov    $0x0,%ebx
  cmp    $0x1,%ebp
  jg     L29
  jmp    L89
L110:
  add    %eax,%ebx
  sub    $0x1,%rdx
  test   %edx,%edx
  js     L27
L29:
  movsbl (%r12,%rdx,1),%eax
  sub    $0x30,%eax
  mov    %ebp,%ecx
  sub    %edx,%ecx
  test   $0x1,%cl
  jne    L110
  add    %eax,%eax
  lea    -0x9(%rax),%ecx
  cmp    $0x9,%eax
  cmovg  %ecx,%eax
  jmp    L110
L27:
  mov    %r12,%rdi
  call   <free@plt>
  movslq %ebx,%rax
  imul   $0x66666667,%rax,%rax
  sar    $0x22,%rax
  mov    %ebx,%edx
  sar    $0x1f,%edx
  sub    %edx,%eax
  lea    (%rax,%rax,4),%eax
  add    %eax,%eax
  cmp    %eax,%ebx
  sete   %al
  movzbl %al,%eax
L74:
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
L107:
  movb   $0x0,(%rax)
L89:
  mov    %r12,%rdi
  call   <free@plt>
  mov    $0x0,%eax
  jmp    L74
```

assistant: ```c
bool luhn(const char *input) {
  int length = 0;
  char *data = malloc(strlen(input));
  for (size_t i = 0; input[i] != '\0'; ++i) {
    if (!(isdigit(input[i]) || isspace(input[i]))) {
      free(data);
      return false;
    }
    if (!isspace(input[i]))
      data[length++] = input[i];
  }
  data[length] = '\0';
  if (length <= 1) {
    free(data);
    return false;
  }
  int sum = 0;
  for (int i = length - 1; i >= 0; --i) {
    int x = data[i] - '0';
    if ((length - i) % 2 == 0) {
      x *= 2;
      if (x > 9)
        x -= 9;
    }
    sum += x;
  }
  free(data);
  return sum % 10 == 0;
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<luhn>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%rbx
  call   <strlen@plt>
  mov    %eax,%edi
  call   <malloc@plt>
  movsbl (%rbx),%edi
  mov    %rax,%r12
  test   %dil,%dil
  je     L75
  xor    %ebp,%ebp
  nopl   0x0(%rax,%rax,1)
L49:
  call   <isdigit@plt>
  test   %rax,%rax
  jne    L12
  movsbl (%rbx),%edi
  call   <isspace@plt>
  test   %rax,%rax
  je     L19
L12:
  movsbl (%rbx),%edi
  call   <isspace@plt>
  test   %rax,%rax
  jne    L30
  movzbl (%rbx),%edx
  movslq %ebp,%rax
  add    $0x1,%ebp
  mov    %dl,(%r12,%rax,1)
L30:
  movsbl 0x1(%rbx),%edi
  add    $0x1,%rbx
  test   %dil,%dil
  jne    L49
  movslq %ebp,%rax
  lea    -0x1(%rbp),%edx
  xor    %ebx,%ebx
  movb   $0x0,(%r12,%rax,1)
  movslq %edx,%rdx
  cmp    $0x1,%ebp
  jle    L19
  nopw   0x0(%rax,%rax,1)
L6:
  movsbl (%r12,%rdx,1),%eax
  mov    %ebp,%ecx
  sub    %edx,%ecx
  sub    $0x30,%eax
  and    $0x1,%ecx
  jne    L68
  add    %eax,%eax
  lea    -0x9(%rax),%ecx
  cmp    $0x9,%eax
  cmovg  %ecx,%eax
L68:
  sub    $0x1,%rdx
  add    %eax,%ebx
  cmp    $0xffffffff,%edx
  jne    L6
  imul   $0xcccccccd,%ebx,%ebx
  mov    %r12,%rdi
  call   <free@plt>
  xor    %eax,%eax
  add    $0x19999998,%ebx
  ror    %ebx
  cmp    $0x19999998,%ebx
  pop    %rbx
  pop    %rbp
  setbe  %al
  pop    %r12
  ret
L75:
  movb   $0x0,(%rax)
L19:
  mov    %r12,%rdi
  call   <free@plt>
  pop    %rbx
  xor    %eax,%eax
  pop    %rbp
  pop    %r12
  ret
```

assistant: ```c
bool luhn(const char *input) {
  int length = 0;
  char *data = malloc(strlen(input));
  for (size_t i = 0; input[i] != '\0'; ++i) {
    if (!(isdigit(input[i]) || isspace(input[i]))) {
      free(data);
      return false;
    }
    if (!isspace(input[i]))
      data[length++] = input[i];
  }
  data[length] = '\0';
  if (length <= 1) {
    free(data);
    return false;
  }
  int sum = 0;
  for (int i = length - 1; i >= 0; --i) {
    int x = data[i] - '0';
    if ((length - i) % 2 == 0) {
      x *= 2;
      if (x > 9)
        x -= 9;
    }
    sum += x;
  }
  free(data);
  return sum % 10 == 0;
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<luhn>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%rbx
  call   <strlen@plt>
  mov    %eax,%edi
  call   <malloc@plt>
  movsbl (%rbx),%edi
  mov    %rax,%r12
  test   %dil,%dil
  je     L10
  xor    %ebp,%ebp
  nopl   0x0(%rax,%rax,1)
L94:
  call   <isdigit@plt>
  test   %rax,%rax
  jne    L14
  movsbl (%rbx),%edi
  call   <isspace@plt>
  test   %rax,%rax
  je     L100
L14:
  movsbl (%rbx),%edi
  call   <isspace@plt>
  test   %rax,%rax
  jne    L92
  movzbl (%rbx),%edx
  add    $0x1,%rbx
  lea    0x1(%rbp),%eax
  mov    %dl,(%r12,%rbp,1)
  movsbl (%rbx),%edi
  test   %dil,%dil
  je     L41
  movslq %eax,%rbp
  call   <isdigit@plt>
  test   %rax,%rax
  jne    L14
  movsbl (%rbx),%edi
  call   <isspace@plt>
  test   %rax,%rax
  jne    L14
L100:
  mov    %r12,%rdi
  call   <free@plt>
  pop    %rbx
  xor    %eax,%eax
  pop    %rbp
  pop    %r12
  ret
  nopw   0x0(%rax,%rax,1)
L92:
  movsbl 0x1(%rbx),%edi
  add    $0x1,%rbx
  test   %dil,%dil
  jne    L94
L104:
  movslq %ebp,%rax
  lea    -0x1(%rbp),%edx
  xor    %ebx,%ebx
  movb   $0x0,(%r12,%rax,1)
  movslq %edx,%rdx
  cmp    $0x1,%ebp
  jle    L100
  nopw   0x0(%rax,%rax,1)
L56:
  movsbl (%r12,%rdx,1),%eax
  mov    %ebp,%ecx
  sub    %edx,%ecx
  sub    $0x30,%eax
  and    $0x1,%ecx
  jne    L111
  add    %eax,%eax
  lea    -0x9(%rax),%ecx
  cmp    $0x9,%eax
  cmovg  %ecx,%eax
L111:
  sub    $0x1,%rdx
  add    %eax,%ebx
  cmp    $0xffffffff,%edx
  jne    L56
  imul   $0xcccccccd,%ebx,%ebx
  mov    %r12,%rdi
  call   <free@plt>
  xor    %eax,%eax
  add    $0x19999998,%ebx
  ror    %ebx
  cmp    $0x19999998,%ebx
  pop    %rbx
  pop    %rbp
  setbe  %al
  pop    %r12
  ret
  nopl   (%rax)
L41:
  mov    %eax,%ebp
  jmp    L104
L10:
  movb   $0x0,(%rax)
  jmp    L100
```

assistant: ```c
bool luhn(const char *input) {
  int length = 0;
  char *data = malloc(strlen(input));
  for (size_t i = 0; input[i] != '\0'; ++i) {
    if (!(isdigit(input[i]) || isspace(input[i]))) {
      free(data);
      return false;
    }
    if (!isspace(input[i]))
      data[length++] = input[i];
  }
  data[length] = '\0';
  if (length <= 1) {
    free(data);
    return false;
  }
  int sum = 0;
  for (int i = length - 1; i >= 0; --i) {
    int x = data[i] - '0';
    if ((length - i) % 2 == 0) {
      x *= 2;
      if (x > 9)
        x -= 9;
    }
    sum += x;
  }
  free(data);
  return sum % 10 == 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
<crypto_gcm_check_authsize>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %edi,-0x4(%rbp)
  cmpl   $0x10,-0x4(%rbp)
  seta   %al
  test   %al,%al
  jne    L25
  mov    -0x4(%rbp),%eax
  mov    $0x1f110,%edx
  mov    %eax,%ecx
  shr    %cl,%rdx
  mov    %rdx,%rax
  and    $0x1,%eax
  test   %rax,%rax
  setne  %al
  test   %al,%al
  jne    L20
L25:
  mov    D0(%rip),%rax
  mov    (%rax),%eax
  neg    %eax
  jmp    L19
L20:
  nop
  mov    $0x0,%eax
L19:
  pop    %rbp
  ret
```

assistant: ```c
int crypto_gcm_check_authsize(unsigned int authsize) {
  switch (authsize) {
  case 4:
  case 8:
  case 12:
  case 13:
  case 14:
  case 15:
  case 16:
    break;
  default:
    return -EINVAL;
  }
  return 0;
}
```
user: What would the C source look like for the assembly code provided here:

```asm
<crypto_gcm_check_authsize>:
  endbr64
  cmp    $0x10,%edi
  ja     L4
  mov    $0x0,%eax
  mov    $0x1f110,%edx
  bt     %rdi,%rdx
  jb     L19
L4:
  mov    D0(%rip),%rax
  mov    (%rax),%eax
  neg    %eax
L19:
  ret
```

assistant: ```c
int crypto_gcm_check_authsize(unsigned int authsize) {
  switch (authsize) {
  case 4:
  case 8:
  case 12:
  case 13:
  case 14:
  case 15:
  case 16:
    break;
  default:
    return -EINVAL;
  }
  return 0;
}
```
user: Translate the below assembly code into C programming language:

```asm
<crypto_gcm_check_authsize>:
  endbr64
  cmp    $0x10,%edi
  ja     L10
  mov    $0x1f110,%edx
  xor    %eax,%eax
  bt     %rdi,%rdx
  jae    L10
  ret
  nopw   0x0(%rax,%rax,1)
L10:
  mov    D6(%rip),%rax
  mov    (%rax),%eax
  neg    %eax
  ret
```

assistant: ```c
int crypto_gcm_check_authsize(unsigned int authsize) {
  switch (authsize) {
  case 4:
  case 8:
  case 12:
  case 13:
  case 14:
  case 15:
  case 16:
    break;
  default:
    return -EINVAL;
  }
  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
<crypto_gcm_check_authsize>:
  endbr64
  cmp    $0x10,%edi
  ja     L17
  mov    $0x1f110,%edx
  xor    %eax,%eax
  bt     %rdi,%rdx
  jae    L17
  ret
  nopw   0x0(%rax,%rax,1)
L17:
  mov    D5(%rip),%rax
  mov    (%rax),%eax
  neg    %eax
  ret
```

assistant: ```c
int crypto_gcm_check_authsize(unsigned int authsize) {
  switch (authsize) {
  case 4:
  case 8:
  case 12:
  case 13:
  case 14:
  case 15:
  case 16:
    break;
  default:
    return -EINVAL;
  }
  return 0;
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<sigint>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x10,%rsp
  mov    %edi,-0x4(%rbp)
  mov    $0x0,%eax
  call   <closedown@plt>
  mov    $0x1,%edi
  call   <_exit@plt>
  nop
  leave
  ret
```

assistant: ```c
void sigint(int sig) {
  sig = sig;
  closedown();
  _exit(1);
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<sigint>:
  endbr64
  sub    $0x8,%rsp
  mov    $0x0,%eax
  call   <closedown@plt>
  mov    $0x1,%edi
  call   <_exit@plt>
  add    $0x8,%rsp
  ret
```

assistant: ```c
void sigint(int sig) {
  sig = sig;
  closedown();
  _exit(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
<sigint>:
  endbr64
  sub    $0x8,%rsp
  xor    %eax,%eax
  call   <closedown@plt>
  mov    $0x1,%edi
  add    $0x8,%rsp
  jmp    1060 <_exit@plt>
```

assistant: ```c
void sigint(int sig) {
  sig = sig;
  closedown();
  _exit(1);
}
```
user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<sigint>:
  endbr64
  sub    $0x8,%rsp
  xor    %eax,%eax
  call   <closedown@plt>
  mov    $0x1,%edi
  add    $0x8,%rsp
  jmp    1060 <_exit@plt>
```

assistant: ```c
void sigint(int sig) {
  sig = sig;
  closedown();
  _exit(1);
}
```
user: 请将以下的汇编代码转换成C语言代码:

```asm
<cftfx41>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %edi,-0x4(%rbp)
  mov    %rsi,-0x10(%rbp)
  mov    %edx,-0x8(%rbp)
  mov    %rcx,-0x18(%rbp)
  cmpl   $0x80,-0x4(%rbp)
  jne    L15
  mov    -0x8(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x40(%rax),%rdx
  mov    -0x18(%rbp),%rax
  add    %rax,%rdx
  mov    -0x10(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <cftf161@plt>
  mov    -0x8(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x100(%rax),%rdx
  mov    -0x18(%rbp),%rax
  add    %rax,%rdx
  mov    -0x10(%rbp),%rax
  add    $0x100,%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <cftf162@plt>
  mov    -0x8(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x40(%rax),%rdx
  mov    -0x18(%rbp),%rax
  add    %rax,%rdx
  mov    -0x10(%rbp),%rax
  add    $0x200,%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <cftf161@plt>
  mov    -0x8(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x40(%rax),%rdx
  mov    -0x18(%rbp),%rax
  add    %rax,%rdx
  mov    -0x10(%rbp),%rax
  add    $0x300,%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <cftf161@plt>
  jmp    L3
L15:
  mov    -0x8(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x80(%rax),%rdx
  mov    -0x18(%rbp),%rax
  add    %rax,%rdx
  mov    -0x10(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <cftf081@plt>
  mov    -0x8(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x80(%rax),%rdx
  mov    -0x18(%rbp),%rax
  add    %rax,%rdx
  mov    -0x10(%rbp),%rax
  sub    $0xffffffffffffff80,%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <cftf082@plt>
  mov    -0x8(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x80(%rax),%rdx
  mov    -0x18(%rbp),%rax
  add    %rax,%rdx
  mov    -0x10(%rbp),%rax
  add    $0x100,%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <cftf081@plt>
  mov    -0x8(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x80(%rax),%rdx
  mov    -0x18(%rbp),%rax
  add    %rax,%rdx
  mov    -0x10(%rbp),%rax
  add    $0x180,%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <cftf081@plt>
L3:
  nop
  leave
  ret
```

assistant: ```c
void cftfx41(int n, double *a, int nw, double *w) {
  void cftf161(double *a, double *w);
  void cftf162(double *a, double *w);
  void cftf081(double *a, double *w);
  void cftf082(double *a, double *w);
  if (n == 128) {
    cftf161(a, &w[nw - 8]);
    cftf162(&a[32], &w[nw - 32]);
    cftf161(&a[64], &w[nw - 8]);
    cftf161(&a[96], &w[nw - 8]);
  } else {
    cftf081(a, &w[nw - 16]);
    cftf082(&a[16], &w[nw - 16]);
    cftf081(&a[32], &w[nw - 16]);
    cftf081(&a[48], &w[nw - 16]);
  }
}
```