ylfeng/ReF-Decompile-dataset huggingface dataset:
user: Translate the below assembly code into C programming language:

```asm
<itoa>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %edi,-0x24(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    %edx,-0x28(%rbp)
  mov    %ecx,-0x34(%rbp)
  mov    %r8d,-0x38(%rbp)
  movl   $0x0,-0x10(%rbp)
  movl   $0x0,-0xc(%rbp)
  cmpl   $0x0,-0x24(%rbp)
  jne    L17
  mov    -0x30(%rbp),%rax
  movb   $0x30,(%rax)
  mov    -0x30(%rbp),%rax
  add    $0x1,%rax
  movb   $0x0,(%rax)
  mov    $0x1,%eax
  jmp    L26
L17:
  cmpl   $0x0,-0x38(%rbp)
  je     L71
  cmpl   $0xa,-0x28(%rbp)
  jne    L71
  cmpl   $0x0,-0x24(%rbp)
  jns    L71
  negl   -0x24(%rbp)
  movl   $0x1,-0xc(%rbp)
  addl   $0x1,-0x10(%rbp)
L71:
  mov    -0x24(%rbp),%eax
  mov    %eax,-0x14(%rbp)
  jmp    L33
L80:
  mov    -0x14(%rbp),%eax
  mov    $0x0,%edx
  divl   -0x28(%rbp)
  mov    %eax,-0x14(%rbp)
  addl   $0x1,-0x10(%rbp)
L33:
  cmpl   $0x0,-0x14(%rbp)
  jne    L80
  mov    -0x10(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x8(%rbp)
  mov    -0x8(%rbp),%rax
  lea    -0x1(%rax),%rdx
  mov    %rdx,-0x8(%rbp)
  movb   $0x0,(%rax)
  mov    -0x24(%rbp),%eax
  mov    %eax,-0x14(%rbp)
  jmp    L125
L121:
  mov    -0x14(%rbp),%eax
  mov    $0x0,%edx
  divl   -0x28(%rbp)
  mov    %edx,%eax
  mov    %al,-0x15(%rbp)
  mov    -0x14(%rbp),%eax
  mov    $0x0,%edx
  divl   -0x28(%rbp)
  mov    %eax,-0x14(%rbp)
  cmpb   $0x9,-0x15(%rbp)
  jle    L43
  cmpl   $0x0,-0x34(%rbp)
  je     L113
  mov    $0x37,%edx
  jmp    L108
L113:
  mov    $0x57,%edx
  jmp    L108
L43:
  mov    $0x30,%edx
L108:
  movzbl -0x15(%rbp),%eax
  add    %edx,%eax
  mov    %al,-0x15(%rbp)
  mov    -0x8(%rbp),%rax
  lea    -0x1(%rax),%rdx
  mov    %rdx,-0x8(%rbp)
  movzbl -0x15(%rbp),%edx
  mov    %dl,(%rax)
L125:
  cmpl   $0x0,-0x14(%rbp)
  jne    L121
  cmpl   $0x0,-0xc(%rbp)
  je     L81
  mov    -0x8(%rbp),%rax
  movb   $0x2d,(%rax)
L81:
  mov    -0x10(%rbp),%eax
L26:
  pop    %rbp
  ret
```

assistant: ```c
int itoa(int value, char *s, unsigned int radix, bool uppercase, bool is_signed) {
  unsigned int n;
  char *p;
  char digit;
  int digits = 0;
  int negative = 0;
  if (value == 0) {
    s[0] = '0';
    s[1] = 0;
    return 1;
  }
  if (is_signed && radix == 10 && value < 0) {
    value = -value;
    negative = 1;
    digits += 1;
  }
  n = value;
  while (n) {
    n /= radix;
    digits += 1;
  }
  p = s + digits;
  *p-- = 0;
  n = value;
  while (n) {
    digit = (n % radix);
    n /= radix;
    digit += (digit <= 9) ? '0' : (uppercase ? 'A' : 'a') - 10;
    *p-- = digit;
  }
  if (negative) {
    *p = '-';
  }
  return digits;
}
```
user: 这段汇编代码用C语言表示是什么样的：

```asm
<itoa>:
  endbr64
  mov    %edi,%eax
  mov    %rsi,%r9
  mov    %edx,%esi
  mov    %ecx,%r10d
  test   %edi,%edi
  je     L55
  test   %r8d,%r8d
  setne  %cl
  cmp    $0xa,%edx
  sete   %dl
  test   %dl,%cl
  je     L83
  test   %edi,%edi
  js     L96
L83:
  mov    $0x0,%r11d
L100:
  mov    %eax,%ecx
  mov    %r11d,%r8d
L65:
  mov    %eax,%edi
  mov    $0x0,%edx
  div    %esi
  add    $0x1,%r8d
  cmp    %edi,%esi
  jbe    L65
  movslq %r8d,%rax
  add    %rax,%r9
  lea    -0x1(%r9),%rdi
  movb   $0x0,(%r9)
  jmp    L74
L55:
  movb   $0x30,(%r9)
  movb   $0x0,0x1(%r9)
  mov    $0x1,%r8d
L43:
  mov    %r8d,%eax
  ret
L96:
  neg    %eax
  mov    $0x1,%r11d
  jmp    L100
L91:
  sub    $0x1,%rdi
  add    %edx,%eax
  mov    %al,0x1(%rdi)
  cmp    %r9d,%esi
  ja     L33
L74:
  mov    %ecx,%r9d
  mov    %ecx,%eax
  mov    $0x0,%edx
  div    %esi
  mov    %eax,%ecx
  mov    $0x30,%eax
  cmp    $0x9,%dl
  jle    L91
  cmp    $0x1,%r10d
  sbb    %eax,%eax
  and    $0x20,%eax
  add    $0x37,%eax
  jmp    L91
L33:
  test   %r11d,%r11d
  je     L43
  movb   $0x2d,(%rdi)
  jmp    L43
```

assistant: ```c
int itoa(int value, char *s, unsigned int radix, bool uppercase, bool is_signed) {
  unsigned int n;
  char *p;
  char digit;
  int digits = 0;
  int negative = 0;
  if (value == 0) {
    s[0] = '0';
    s[1] = 0;
    return 1;
  }
  if (is_signed && radix == 10 && value < 0) {
    value = -value;
    negative = 1;
    digits += 1;
  }
  n = value;
  while (n) {
    n /= radix;
    digits += 1;
  }
  p = s + digits;
  *p-- = 0;
  n = value;
  while (n) {
    digit = (n % radix);
    n /= radix;
    digit += (digit <= 9) ? '0' : (uppercase ? 'A' : 'a') - 10;
    *p-- = digit;
  }
  if (negative) {
    *p = '-';
  }
  return digits;
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<itoa>:
  endbr64
  mov    %rsi,%r10
  test   %edi,%edi
  je     L76
  mov    %edx,%esi
  test   %r8d,%r8d
  push   %rbx
  mov    %ecx,%r11d
  setne  %dl
  cmp    $0xa,%esi
  sete   %al
  test   %al,%dl
  je     L34
  test   %edi,%edi
  js     L78
L34:
  xor    %ebx,%ebx
L38:
  mov    %ebx,%r9d
  mov    %edi,%eax
L63:
  mov    %eax,%ecx
  xor    %edx,%edx
  add    $0x1,%r9d
  div    %esi
  cmp    %ecx,%esi
  jbe    L63
  movslq %r9d,%rax
  add    %rax,%r10
  movb   $0x0,(%r10)
  lea    -0x1(%r10),%r8
  nopl   0x0(%rax)
L36:
  mov    %edi,%eax
  xor    %edx,%edx
  mov    %edi,%r10d
  mov    $0x30,%ecx
  div    %esi
  mov    %eax,%edi
  cmp    $0x9,%dl
  jle    L22
  cmp    $0x1,%r11d
  sbb    %ecx,%ecx
  and    $0x20,%ecx
  add    $0x37,%ecx
L22:
  sub    $0x1,%r8
  add    %edx,%ecx
  mov    %cl,0x1(%r8)
  cmp    %r10d,%esi
  jbe    L36
  test   %ebx,%ebx
  je     L68
  movb   $0x2d,(%r8)
L68:
  mov    %r9d,%eax
  pop    %rbx
  ret
  nopl   (%rax)
L76:
  mov    $0x30,%eax
  mov    %ax,(%rsi)
  mov    $0x1,%eax
  ret
  xchg   %ax,%ax
L78:
  neg    %edi
  mov    $0x1,%ebx
  jmp    L38
```

assistant: ```c
int itoa(int value, char *s, unsigned int radix, bool uppercase, bool is_signed) {
  unsigned int n;
  char *p;
  char digit;
  int digits = 0;
  int negative = 0;
  if (value == 0) {
    s[0] = '0';
    s[1] = 0;
    return 1;
  }
  if (is_signed && radix == 10 && value < 0) {
    value = -value;
    negative = 1;
    digits += 1;
  }
  n = value;
  while (n) {
    n /= radix;
    digits += 1;
  }
  p = s + digits;
  *p-- = 0;
  n = value;
  while (n) {
    digit = (n % radix);
    n /= radix;
    digit += (digit <= 9) ? '0' : (uppercase ? 'A' : 'a') - 10;
    *p-- = digit;
  }
  if (negative) {
    *p = '-';
  }
  return digits;
}
```
user: What is the c source code of the assembly code below:

```asm
<itoa>:
  endbr64
  mov    %rsi,%r10
  mov    %edi,%eax
  mov    %edx,%esi
  mov    %ecx,%r11d
  test   %edi,%edi
  je     L41
  test   %r8d,%r8d
  setne  %cl
  cmp    $0xa,%edx
  sete   %dl
  test   %dl,%cl
  je     L18
  test   %edi,%edi
  js     L94
L18:
  xor    %r9d,%r9d
L1:
  mov    %eax,%ecx
  mov    %r9d,%r8d
  cs nopw 0x0(%rax,%rax,1)
L48:
  mov    %eax,%edi
  xor    %edx,%edx
  add    $0x1,%r8d
  div    %esi
  cmp    %edi,%esi
  jbe    L48
  movslq %r8d,%rax
  add    %rax,%r10
  movb   $0x0,(%r10)
  lea    -0x1(%r10),%rdi
  test   %r11d,%r11d
  jne    L2
  mov    %ecx,%eax
  xor    %edx,%edx
  sub    $0x1,%rdi
  div    %esi
  cmp    $0x9,%dl
  jle    L107
L126:
  add    $0x57,%edx
  mov    %dl,0x1(%rdi)
  cmp    %ecx,%esi
  ja     L62
L138:
  mov    %eax,%ecx
  xor    %edx,%edx
  sub    $0x1,%rdi
  mov    %ecx,%eax
  div    %esi
  cmp    $0x9,%dl
  jg     L126
L107:
  add    $0x30,%edx
  mov    %dl,0x1(%rdi)
  cmp    %ecx,%esi
  jbe    L138
L62:
  test   %r9d,%r9d
  je     L69
  movb   $0x2d,(%rdi)
L69:
  mov    %r8d,%eax
  ret
  nopl   0x0(%rax)
L145:
  add    $0x30,%edx
  mov    %dl,0x1(%rdi)
  cmp    %ecx,%esi
  ja     L62
  mov    %eax,%ecx
L2:
  mov    %ecx,%eax
  xor    %edx,%edx
  sub    $0x1,%rdi
  div    %esi
  cmp    $0x9,%dl
  jle    L145
  add    $0x37,%edx
  mov    %dl,0x1(%rdi)
  cmp    %ecx,%esi
  ja     L62
  mov    %eax,%ecx
  jmp    L2
  nopl   0x0(%rax)
L41:
  mov    $0x30,%eax
  mov    $0x1,%r8d
  mov    %ax,(%r10)
  mov    %r8d,%eax
  ret
  nopl   0x0(%rax,%rax,1)
L94:
  neg    %eax
  mov    $0x1,%r9d
  jmp    L1
```

assistant: ```c
int itoa(int value, char *s, unsigned int radix, bool uppercase, bool is_signed) {
  unsigned int n;
  char *p;
  char digit;
  int digits = 0;
  int negative = 0;
  if (value == 0) {
    s[0] = '0';
    s[1] = 0;
    return 1;
  }
  if (is_signed && radix == 10 && value < 0) {
    value = -value;
    negative = 1;
    digits += 1;
  }
  n = value;
  while (n) {
    n /= radix;
    digits += 1;
  }
  p = s + digits;
  *p-- = 0;
  n = value;
  while (n) {
    digit = (n % radix);
    n /= radix;
    digit += (digit <= 9) ? '0' : (uppercase ? 'A' : 'a') - 10;
    *p-- = digit;
  }
  if (negative) {
    *p = '-';
  }
  return digits;
}
```
user: 请将这段汇编代码片段转换成等效的C代码:

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %edi,-0x34(%rbp)
  mov    %rsi,-0x40(%rbp)
  movl   $0x400,-0x24(%rbp)
  mov    -0x24(%rbp),%eax
  cltq
  shl    $0x2,%rax
  mov    %rax,-0x20(%rbp)
  mov    -0x20(%rbp),%rax
  mov    %rax,%rdi
  call   <malloc@plt>
  mov    %rax,-0x18(%rbp)
  mov    -0x20(%rbp),%rax
  mov    %rax,%rdi
  call   <malloc@plt>
  mov    %rax,-0x10(%rbp)
  mov    -0x20(%rbp),%rax
  mov    %rax,%rdi
  call   <malloc@plt>
  mov    %rax,-0x8(%rbp)
  mov    -0x24(%rbp),%edx
  mov    -0x18(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <initialData@plt>
  mov    -0x24(%rbp),%edx
  mov    -0x10(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <initialData@plt>
  mov    -0x24(%rbp),%ecx
  mov    -0x8(%rbp),%rdx
  mov    -0x10(%rbp),%rsi
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <sumArraysOnHost@plt>
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  mov    -0x10(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  mov    -0x8(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  mov    $0x0,%eax
  leave
  ret
```

assistant: ```c
int main(int argc, char **argv) {
  int nElem = 1024;
  size_t nBytes = nElem * sizeof(float);
  float *h_A, *h_B, *h_C;
  h_A = (float *)malloc(nBytes);
  h_B = (float *)malloc(nBytes);
  h_C = (float *)malloc(nBytes);
  initialData(h_A, nElem);
  initialData(h_B, nElem);
  sumArraysOnHost(h_A, h_B, h_C, nElem);
  free(h_A);
  free(h_B);
  free(h_C);
  return (0);
}
```
user: 请从给定的汇编指令推导出C源代码：

```asm
<main>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  mov    $0x1000,%edi
  call   <malloc@plt>
  mov    %rax,%rbp
  mov    $0x1000,%edi
  call   <malloc@plt>
  mov    %rax,%rbx
  mov    $0x1000,%edi
  call   <malloc@plt>
  mov    %rax,%r12
  mov    $0x400,%esi
  mov    %rbp,%rdi
  call   <initialData@plt>
  mov    $0x400,%esi
  mov    %rbx,%rdi
  call   <initialData@plt>
  mov    $0x400,%ecx
  mov    %r12,%rdx
  mov    %rbx,%rsi
  mov    %rbp,%rdi
  call   <sumArraysOnHost@plt>
  mov    %rbp,%rdi
  call   <free@plt>
  mov    %rbx,%rdi
  call   <free@plt>
  mov    %r12,%rdi
  call   <free@plt>
  mov    $0x0,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
```

assistant: ```c
int main(int argc, char **argv) {
  int nElem = 1024;
  size_t nBytes = nElem * sizeof(float);
  float *h_A, *h_B, *h_C;
  h_A = (float *)malloc(nBytes);
  h_B = (float *)malloc(nBytes);
  h_C = (float *)malloc(nBytes);
  initialData(h_A, nElem);
  initialData(h_B, nElem);
  sumArraysOnHost(h_A, h_B, h_C, nElem);
  free(h_A);
  free(h_B);
  free(h_C);
  return (0);
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<main>:
  endbr64
  push   %r13
  mov    $0x1000,%edi
  push   %r12
  push   %rbp
  call   <malloc@plt>
  mov    $0x1000,%edi
  mov    %rax,%r12
  call   <malloc@plt>
  mov    $0x1000,%edi
  mov    %rax,%rbp
  call   <malloc@plt>
  mov    %r12,%rdi
  mov    $0x400,%esi
  mov    %rax,%r13
  call   <initialData@plt>
  mov    %rbp,%rdi
  mov    $0x400,%esi
  call   <initialData@plt>
  mov    %r13,%rdx
  mov    %rbp,%rsi
  mov    $0x400,%ecx
  mov    %r12,%rdi
  call   <sumArraysOnHost@plt>
  mov    %r12,%rdi
  call   <free@plt>
  mov    %rbp,%rdi
  call   <free@plt>
  mov    %r13,%rdi
  call   <free@plt>
  pop    %rbp
  xor    %eax,%eax
  pop    %r12
  pop    %r13
  ret
```

assistant: ```c
int main(int argc, char **argv) {
  int nElem = 1024;
  size_t nBytes = nElem * sizeof(float);
  float *h_A, *h_B, *h_C;
  h_A = (float *)malloc(nBytes);
  h_B = (float *)malloc(nBytes);
  h_C = (float *)malloc(nBytes);
  initialData(h_A, nElem);
  initialData(h_B, nElem);
  sumArraysOnHost(h_A, h_B, h_C, nElem);
  free(h_A);
  free(h_B);
  free(h_C);
  return (0);
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<main>:
  endbr64
  push   %r13
  mov    $0x1000,%edi
  push   %r12
  push   %rbp
  call   <malloc@plt>
  mov    $0x1000,%edi
  mov    %rax,%r12
  call   <malloc@plt>
  mov    $0x1000,%edi
  mov    %rax,%rbp
  call   <malloc@plt>
  mov    %r12,%rdi
  mov    $0x400,%esi
  mov    %rax,%r13
  call   <initialData@plt>
  mov    %rbp,%rdi
  mov    $0x400,%esi
  call   <initialData@plt>
  mov    %r13,%rdx
  mov    %rbp,%rsi
  mov    $0x400,%ecx
  mov    %r12,%rdi
  call   <sumArraysOnHost@plt>
  mov    %r12,%rdi
  call   <free@plt>
  mov    %rbp,%rdi
  call   <free@plt>
  mov    %r13,%rdi
  call   <free@plt>
  pop    %rbp
  xor    %eax,%eax
  pop    %r12
  pop    %r13
  ret
```

assistant: ```c
int main(int argc, char **argv) {
  int nElem = 1024;
  size_t nBytes = nElem * sizeof(float);
  float *h_A, *h_B, *h_C;
  h_A = (float *)malloc(nBytes);
  h_B = (float *)malloc(nBytes);
  h_C = (float *)malloc(nBytes);
  initialData(h_A, nElem);
  initialData(h_B, nElem);
  sumArraysOnHost(h_A, h_B, h_C, nElem);
  free(h_A);
  free(h_B);
  free(h_C);
  return (0);
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<hash>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x18(%rbp)
  movb   $0x0,-0x1(%rbp)
  jmp    L10
L25:
  movzbl -0x1(%rbp),%edx
  mov    %edx,%eax
  shl    $0x5,%eax
  sub    %edx,%eax
  mov    %eax,%ecx
  mov    -0x18(%rbp),%rax
  movzbl (%rax),%eax
  add    %ecx,%eax
  add    %al,-0x1(%rbp)
  addq   $0x1,-0x18(%rbp)
L10:
  mov    -0x18(%rbp),%rax
  movzbl (%rax),%eax
  test   %al,%al
  je     L29
  mov    -0x18(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x20,%al
  jne    L25
L29:
  movzbl -0x1(%rbp),%eax
  pop    %rbp
  ret
```

assistant: ```c
unsigned char hash(char *src) {
  unsigned char h;
  for (h = 0; *src && *src != ' '; src++) {
    h += 31 * h + *src;
  }
  return h;
}
```
user: 请从给定的汇编指令推导出C源代码:

```asm
<hash>:
  endbr64
  movzbl (%rdi),%edx
  test   $0xdf,%dl
  je     L9
  mov    $0x0,%eax
L3:
  shl    $0x5,%eax
  add    %edx,%eax
  add    $0x1,%rdi
  movzbl (%rdi),%edx
  test   $0xdf,%dl
  jne    L3
  ret
L9:
  mov    $0x0,%eax
  ret
```

assistant: ```c
unsigned char hash(char *src) {
  unsigned char h;
  for (h = 0; *src && *src != ' '; src++) {
    h += 31 * h + *src;
  }
  return h;
}
```
user: 请从给定的汇编指令推导出C源代码：

```asm
<hash>:
  endbr64
  movzbl (%rdi),%edx
  xor    %eax,%eax
  test   $0xdf,%dl
  je     L2
  xchg   %ax,%ax
L9:
  shl    $0x5,%eax
  add    $0x1,%rdi
  add    %edx,%eax
  movzbl (%rdi),%edx
  test   $0xdf,%dl
  jne    L9
  ret
  nopw   0x0(%rax,%rax,1)
L2:
  ret
```

assistant: ```c
unsigned char hash(char *src) {
  unsigned char h;
  for (h = 0; *src && *src != ' '; src++) {
    h += 31 * h + *src;
  }
  return h;
}
```
user: Translate the below assembly code into C programming language:

```asm
<hash>:
  endbr64
  movzbl (%rdi),%edx
  xor    %eax,%eax
  test   $0xdf,%dl
  je     L3
  xchg   %ax,%ax
L15:
  shl    $0x5,%eax
  add    $0x1,%rdi
  add    %edx,%eax
  movzbl (%rdi),%edx
  test   $0xdf,%dl
  jne    L15
  ret
  nopw   0x0(%rax,%rax,1)
L3:
  ret
```

assistant: ```c
unsigned char hash(char *src) {
  unsigned char h;
  for (h = 0; *src && *src != ' '; src++) {
    h += 31 * h + *src;
  }
  return h;
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<quick_sort4var>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %rdi,-0x28(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    %rdx,-0x38(%rbp)
  mov    -0x30(%rbp),%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  mov    %rax,-0x10(%rbp)
  mov    -0x30(%rbp),%rax
  mov    %rax,-0x20(%rbp)
  mov    -0x38(%rbp),%rax
  mov    %rax,-0x18(%rbp)
L7:
  subq   $0x1,-0x18(%rbp)
  mov    -0x18(%rbp),%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  cmp    %rax,-0x10(%rbp)
  jb     L7
L36:
  addq   $0x1,-0x20(%rbp)
  mov    -0x20(%rbp),%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  cmp    %rax,-0x10(%rbp)
  ja     L36
  mov    -0x20(%rbp),%rax
  cmp    -0x18(%rbp),%rax
  jae    L19
  mov    -0x20(%rbp),%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  mov    %rax,-0x8(%rbp)
  mov    -0x18(%rbp),%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    -0x20(%rbp),%rdx
  lea    0x0(,%rdx,8),%rcx
  mov    -0x28(%rbp),%rdx
  add    %rcx,%rdx
  mov    (%rax),%rax
  mov    %rax,(%rdx)
  mov    -0x18(%rbp),%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x28(%rbp),%rax
  add    %rax,%rdx
  mov    -0x8(%rbp),%rax
  mov    %rax,(%rdx)
  jmp    L7
L19:
  nop
  mov    -0x18(%rbp),%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    -0x30(%rbp),%rdx
  lea    0x0(,%rdx,8),%rcx
  mov    -0x28(%rbp),%rdx
  add    %rcx,%rdx
  mov    (%rax),%rax
  mov    %rax,(%rdx)
  mov    -0x18(%rbp),%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x28(%rbp),%rax
  add    %rax,%rdx
  mov    -0x10(%rbp),%rax
  mov    %rax,(%rdx)
  mov    -0x18(%rbp),%rdx
  mov    -0x30(%rbp),%rcx
  mov    -0x28(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <quick_sort4var_aux@plt>
  mov    -0x18(%rbp),%rax
  lea    0x1(%rax),%rcx
  mov    -0x38(%rbp),%rdx
  mov    -0x28(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <quick_sort4var_aux@plt>
  nop
  leave
  ret
```

assistant: ```c
void quick_sort4var(int32_t *a, int32_t low, int32_t high) {
  int32_t i, j, p, aux;
  p = a[low];
  i = low;
  j = high;
  for (;;) {
    do {
      j--;
    } while (a[j] > p);
    do {
      i++;
    } while (a[i] < p);
    if (i >= j)
      break;
    aux = a[i];
    a[i] = a[j];
    a[j] = aux;
  }
  a[low] = a[j];
  a[j] = p;
  quick_sort4var_aux(a, low, j);
  quick_sort4var_aux(a, j + 1, high);
}
```
user: What is the c source code of the assembly code below:

```asm
<quick_sort4var>:
  endbr64
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%rbp
  mov    %rsi,%r13
  mov    %rdx,%r12
  lea    (%rdi,%rsi,8),%r14
  mov    (%r14),%rsi
  lea    -0x8(%rdi,%rdx,8),%r8
  mov    %rdx,%rbx
  mov    %r13,%rdx
  jmp    L48
L1:
  sub    $0x8,%r8
  mov    %r9,%rbx
L48:
  lea    -0x1(%rbx),%r9
  mov    %r8,%r11
  mov    (%r8),%r10
  cmp    %rsi,%r10
  ja     L1
  lea    0x8(%rbp,%rdx,8),%rax
L22:
  add    $0x1,%rdx
  mov    %rax,%rdi
  add    $0x8,%rax
  mov    -0x8(%rax),%rcx
  cmp    %rsi,%rcx
  jb     L22
  cmp    %rdx,%r9
  jbe    L40
  mov    %r10,(%rdi)
  mov    %rcx,(%r11)
  jmp    L1
L40:
  mov    %r10,(%r14)
  mov    %rsi,(%r11)
  mov    %r9,%rdx
  mov    %r13,%rsi
  mov    %rbp,%rdi
  call   <quick_sort4var_aux@plt>
  mov    %r12,%rdx
  mov    %rbx,%rsi
  mov    %rbp,%rdi
  call   <quick_sort4var_aux@plt>
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
```

assistant: ```c
void quick_sort4var(int32_t *a, int32_t low, int32_t high) {
  int32_t i, j, p, aux;
  p = a[low];
  i = low;
  j = high;
  for (;;) {
    do {
      j--;
    } while (a[j] > p);
    do {
      i++;
    } while (a[i] < p);
    if (i >= j)
      break;
    aux = a[i];
    a[i] = a[j];
    a[j] = aux;
  }
  a[low] = a[j];
  a[j] = p;
  quick_sort4var_aux(a, low, j);
  quick_sort4var_aux(a, j + 1, high);
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<quick_sort4var>:
  endbr64
  push   %r14
  mov    %rsi,%r14
  lea    -0x8(%rdi,%rdx,8),%r9
  push   %r13
  mov    %rdi,%r13
  push   %r12
  mov    %rdx,%r12
  push   %rbp
  mov    %rdx,%rbp
  push   %rbx
  lea    (%rdi,%rsi,8),%rbx
  mov    %r14,%rdi
  mov    (%rbx),%rsi
  nopw   0x0(%rax,%rax,1)
L14:
  mov    (%r9),%r11
  lea    -0x1(%rbp),%r10
  cmp    %rsi,%r11
  ja     L25
  lea    0x1(%rdi),%rdx
  lea    0x0(%r13,%rdx,8),%rax
  jmp    L42
  nopw   0x0(%rax,%rax,1)
L41:
  add    $0x1,%rdx
L42:
  mov    %rax,%r8
  mov    (%rax),%rcx
  add    $0x8,%rax
  mov    %rdx,%rdi
  cmp    %rsi,%rcx
  jb     L41
  cmp    %rdx,%r10
  jbe    L24
  mov    %r11,(%r8)
  mov    %rcx,(%r9)
L25:
  sub    $0x8,%r9
  mov    %r10,%rbp
  jmp    L14
  nopw   0x0(%rax,%rax,1)
L24:
  mov    %r11,(%rbx)
  mov    %r13,%rdi
  mov    %r10,%rdx
  mov    %rsi,(%r9)
  mov    %r14,%rsi
  call   <quick_sort4var_aux@plt>
  pop    %rbx
  mov    %r12,%rdx
  mov    %rbp,%rsi
  mov    %r13,%rdi
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  jmp    1050 <quick_sort4var_aux@plt>
```

assistant: ```c
void quick_sort4var(int32_t *a, int32_t low, int32_t high) {
  int32_t i, j, p, aux;
  p = a[low];
  i = low;
  j = high;
  for (;;) {
    do {
      j--;
    } while (a[j] > p);
    do {
      i++;
    } while (a[i] < p);
    if (i >= j)
      break;
    aux = a[i];
    a[i] = a[j];
    a[j] = aux;
  }
  a[low] = a[j];
  a[j] = p;
  quick_sort4var_aux(a, low, j);
  quick_sort4var_aux(a, j + 1, high);
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<quick_sort4var>:
  endbr64
  push   %r14
  mov    %rsi,%r14
  lea    -0x8(%rdi,%rdx,8),%r9
  push   %r13
  mov    %rdi,%r13
  push   %r12
  mov    %rdx,%r12
  push   %rbp
  mov    %rdx,%rbp
  push   %rbx
  lea    (%rdi,%rsi,8),%rbx
  mov    %r14,%rdi
  mov    (%rbx),%rsi
  nopw   0x0(%rax,%rax,1)
L35:
  mov    (%r9),%r11
  lea    -0x1(%rbp),%r10
  cmp    %rsi,%r11
  ja     L6
  lea    0x1(%rdi),%rdx
  lea    0x0(%r13,%rdx,8),%rax
  jmp    L25
  nopw   0x0(%rax,%rax,1)
L44:
  add    $0x1,%rdx
L25:
  mov    %rax,%r8
  mov    (%rax),%rcx
  add    $0x8,%rax
  mov    %rdx,%rdi
  cmp    %rsi,%rcx
  jb     L44
  cmp    %rdx,%r10
  jbe    L40
  mov    %r11,(%r8)
  mov    %rcx,(%r9)
L6:
  sub    $0x8,%r9
  mov    %r10,%rbp
  jmp    L35
  nopw   0x0(%rax,%rax,1)
L40:
  mov    %r11,(%rbx)
  mov    %r13,%rdi
  mov    %r10,%rdx
  mov    %rsi,(%r9)
  mov    %r14,%rsi
  call   <quick_sort4var_aux@plt>
  pop    %rbx
  mov    %r12,%rdx
  mov    %rbp,%rsi
  mov    %r13,%rdi
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  jmp    1050 <quick_sort4var_aux@plt>
```

assistant: ```c
void quick_sort4var(int32_t *a, int32_t low, int32_t high) {
  int32_t i, j, p, aux;
  p = a[low];
  i = low;
  j = high;
  for (;;) {
    do {
      j--;
    } while (a[j] > p);
    do {
      i++;
    } while (a[i] < p);
    if (i >= j)
      break;
    aux = a[i];
    a[i] = a[j];
    a[j] = aux;
  }
  a[low] = a[j];
  a[j] = p;
  quick_sort4var_aux(a, low, j);
  quick_sort4var_aux(a, j + 1, high);
}
```
user: 请从给定的汇编指令推导出C源代码:

```asm
<b64urldecsize>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x18(%rbp)
  mov    -0x18(%rbp),%rax
  add    $0x3,%rax
  shr    $0x2,%rax
  mov    %rax,%rdx
  mov    %rdx,%rax
  add    %rax,%rax
  add    %rdx,%rax
  mov    %rax,-0x8(%rbp)
  mov    -0x18(%rbp),%rax
  and    $0x3,%eax
  cmp    $0x3,%rax
  je     L97
  cmp    $0x3,%rax
  ja     L81
  cmp    $0x2,%rax
  je     L29
  cmp    $0x2,%rax
  ja     L81
  test   %rax,%rax
  je     L90
  cmp    $0x1,%rax
  jne    L81
  mov    $0x0,%eax
  jmp    L57
L29:
  subq   $0x2,-0x8(%rbp)
  jmp    L34
L97:
  subq   $0x1,-0x8(%rbp)
  jmp    L34
L81:
  mov    $0x0,%eax
  jmp    L57
L90:
  nop
L34:
  mov    -0x8(%rbp),%rax
L57:
  pop    %rbp
  ret
```

assistant: ```c
size_t b64urldecsize(size_t n) {
  size_t r;
  r = ((n + 3) / 4) * 3;
  switch (n % 4) {
  case 0:
    break;
  case 1:
    return (0);
  case 2:
    r -= 2;
    break;
  case 3:
    r -= 1;
    break;
  default:
    return (0);
  }
  return (r);
}
```